CN108738644A - A kind of grass trimmer - Google Patents

Abstract

A kind of grass trimmer, grass trimmer control wheel are equipped with the 5G mobile phones positioned by the Big Dipper, energy remote-control mower, equipped with face and fingerprint recognition to confirm the people to give an order for the first time or manned or automatic Pilot.Blade is multiple tooth hay knife, and the side of the contrate of the apical tooth (25) of the multiple tooth hay knife is the arc containing equiangular spiral；The upper die forming block (25a) and lower die forming blocks (25b) of steel plate punched stretching die used are multiple equidistant or isogonism briquettings；Siphon pipe is configured on blade, chassis is equipped with more short soft mop cloth strips ring week, forms air cushion between lawn；Bumper is equipped with flexible comb, is additionally provided with magnetic survey device and doppler detector, and the liquid of the vitamin containing growth is oozed in the siphon pipe configured on the mower blade, existing to mix broken careless supplementary feeding effect, and comforts and promote growth by chaffcutter wound.

Description

A kind of grass trimmer

Technical field

The present invention relates to a kind of for the hay mower that places cut the grass on a lawn beside garden, park and road etc., is adopting On the basis of the straight ripple powder metallurgy lawn machine gear-box of pressure logarithmic curve arc wave such as having, the lawn further developed is cut Careless machine and the general mower blade of gardens intelligent grass-removing and with protective device not only can manually but also can automatic grass trimmer.

Background technology

Hay mower is widely used in being cut not in the way of walk sometimes from walking sometimes by the hobby of people is selected Grass.Operation pedestrian pulls from control crank is walked, and by steel wire rope and driving lever, clutch block is made to be axially displaced to clutch.It is existing The clutch block of arrangement of clutch in the rear wheel drive The gear deceleration clutch of the traverse gear of technology is only to lean on clutch block side Circular cone carrys out clutch, needs larger axially combined power, and the damage phenomenon that internal pressure ring washer is broken is caused to occur frequently；Between circular conical surface Frictional heat is generated in engaging process, needs to add lubricating oil in gear-box；And there is friction to have opposite sliding between circular conical surface, consume work( Rate.It is hay mower gear-box either Plastic or metal class, by limitations such as technology and costs, clutch is walked certainly not Steady and insecure situation happens occasionally, and solves the problems, such as sporadic not clutch, is always the international long-standing of industry Problem.

Part is more more expensive used in conventional mowing knife system；Also heavier, rotary inertia is larger, and power hungry is more；And Knife is rigid connection, is very stiff and demanding, without security protection when encountering sundries such as water pipe.The side of common hilted broadsword only have sword and Anodontia, Ren Yi Blunt encounter cane and cut bad, often tear；Especially its end face circumferentially is anodontia, and end face is in circle The rotating speed at all positions is high, and cutting function is strong, therefore it is very big loss to ablation energy that the end face of common hilted broadsword is anodontia.

In order to overcome working condition caused by the clutch in the rear wheel drive retarder of the hay mower prior art Deficiency associate the present inventor and also to invent several different types of hay mower clutches and retarder Once in the external certain devices for being related to manufacture as senior engineer SENIOR ENGINEER such as Switzerland, special kneading is improved, then auxiliary Product can be made to attain a yet higher goal with invention, the present inventor has made a variety of designs and innovation with lifetime domestic and international working experience, just like The perfection that the mankind pursue invention is forever continuous, and just the practical plan of a variety of gradually improve and perfects combines a variety of diagrams below And it is explained in detail.

Invention content

In order to overcome part used in the conventional mowing-apparatus of the hay mower prior art more, rotary inertia is larger, Power hungry is more, and knife is rigid connection, does not have the shortcomings that security protection, the present invention to provide a kind of hay mower cutting machine The improvement of structure, be for hay mower should not independent tool apron knife, the referred to as hay mower hay knife without tool apron, one Part can be made, which to reduce , Zao Price, to be reduced；Two can be such that weight saving, consumption power reduces；Three can make it have the function of security protection. Only have sword and anodontia, Ren Yi Blunt for the side for making up common hilted broadsword again, encounters cane and cut bad, often tear； Especially its end face circumferentially is anodontia, and end face is high in the rotating speed of circumferential location, and cutting function is strong, therefore the end face of common hilted broadsword Anodontia is the shortcoming of the very big loss to ablation energy, and the present invention is improved for many years, such as material, heat treatment, mechanism, form, Especially provide a kind of hay mower multiple tooth mowing on the basis of the hay mower hay knife without tool apron as mentioned again Knife, the multiple tooth length that blade is considerably increased than hilted broadsword, has more folding swords and there are many impact cutting angle and slip cutting angles, is conducive to enhance Straw and straw efficiency are cut, the hunchbacked formula bottom of shear blade grinds structure, so that it is had self-grinding and wear-resisting persistence, and because of multiple tooth ratio Former hilted broadsword is sharper and saves power consumption.

The power of common hay mower is used from the vertical cutter shaft of the engine in the middle part of hay mower Belt and belt pulley carry out primary transmission, and rotating speed is changed into 1500 turns every point from every point 3000, then carries out secondary transmission and guide to position In the retarder containing clutch of the driving rear axle at hay mower rear portion, the gear ratio of two stage reducer is up to 5, and rotating speed is from every point 1500 are changed into 300 turns every point of driving rear axle, then carry out three-level transmission, by the coaxial driving gear and lawn of driving rear axle Internal gear gear ring in the trailing wheel of grass trimmer is meshed, and because trailing wheel will adjust different mowing heights, therefore the axis of trailing wheel is in adjusting height It is upper and with driving rear axle cannot coaxial but two axis it is parallel, make hay mower it is maximum from speed is walked substantially at one meter per second, To meet customer requirement.

It for energy-saving and emission-reduction, reduces and is harmful to HC hydrocarbon emissions, on the one hand hay mower is to improve engine On the other hand discharge is to use electric energy, low with lithium battery power, normally only several hectowatts, must go to charge each hour；And lawn Grass trimmer makees a few hours with starting the thousands of bricklayers of function；Nevertheless, the hay mower or order of electricity consumption significantly increase, because The target that people pursue environmental protection is firm, pursue the automation of operation and intelligence be it is endless, as a result, Yi Zhongyou The cutter blade for mowing machine and reducer gear of energy-saving circuit control and the processing of the carbon, nitrogen and boron of air-cooled inner shaft are just come into being.

The present invention solves the technical method that its technical problem is taken：

Grass trimmer front is equipped with bumper (109), and bumper is equipped with flexible comb, is additionally provided with magnetic survey device and Doppler Detector, with iron pipe in defense sector.On clad steel plate direct punching press for connection molding；Should not independent tool apron knife, be knife What seat and knife were integrated, it is additionally provided with the key of security protection thereon, is the multiple logarithm teeth of tool and the mower blade in noise reduction hole.

A kind of engine spindle mowing-apparatus, especially the hay mower hay knife without tool apron, on the steel plate of knife, In the riding position region of engine spindle and fastening bolt (17), it is equipped with pit (2), key (1), keyway (3), such as Fig. 1, Fig. 3, Shown in Fig. 4, Figure 10 and Figure 11；It is characterized in that：The internal diameter of the pit (2) is equal to or tolerance is outer slightly larger than engine spindle There is hole in the centre of diameter, the bottom of the pit (2), to be passed through fastening bolt (17)；The peace at the edge of the pit (2) The band of position of key is put, key (1) is equipped with, it is characterized in that：The key (1) is rectangle, and is from the steel plate of knife, using material Punching press is bent and molding, or is made with welding or be glued, and the two sides of its square-section, at least one side are pacified It fills and sticker is in the keyway of engine spindle；The root of the especially described key (1), that is, the steel plate of key (1) and knife and With the interconnecting piece of the band of position of the placement key at the edge of the pit (2), there is the crack arrest slot that punching press is bent, so as to correctly Select suitable shear strength so that can be mowed by key and when encountering water pipe the root overloading of key and protect.Institute The method for correctly selecting suitable shear strength stated concisely is described below：The root of the manufacture key (1) is available The crack arrest channel process of secondary wall.Secondary wall refers to the metal plate wall being connected on other thin-walleds, can be counted as the subitem of major wall. The seamed crack arrest slot of crack arrest slot of the root of key, no crack arrest slot, stretching, extension crack arrest slot, rectangle crack arrest slot, oblong crack arrest slot, preferably Select seamed crack arrest slot.It is recommended that with computer bender and PROE, available system gives tacit consent to equation, with Y factor or K factor；Or with predetermined The bending table of justice；Or the bending table with customization；Material property and compensation are considered by system.If the bending table of customization not referred to Determine to sheet metal component, following formula can be used to calculate length of run：

θ/90 L=(pi/2 xR+YxT) x

In formula, L is the length of run of key；R is the inner radius of key；Y factor can use 0.5 herein；T is steel plate thickness, is beaten It is convex that side is rolled over and many places are dashed forward, and the modulus of the mechanics of materials can be improved, and reduces steel plate thickness；θ is bending angle, can be selected between 80-100 It takes.Y factor and K factor are that part defined in the position of the neutral bending line for the relative thickness by sheet metal component material is normal Number.K factor is that the ratio the distance (δ) to inside radius bend and material thickness (T), formula are from neutral bending line K=δ/T.Y factor is the ratio between the length of neutral bending line and material thickness (T), and formula is Y=Kx (pi/2).It can be with Accessing text and the precision of the report of HTML sheet metal components and setting sheet metal component.Select the method for suitable shear strength second is that practice Method of verification, in the root of the key (1), that is, placement of the key (1) with the steel plate of knife and with the edge of the pit (2) The interconnecting piece of the band of position of key, no wheel are the crack arrest slots for having punching press to bend, or made with welding or splicing, in practice it has proved that If still its intensity is excessively high, material reducing is taken to cut out method, i.e., in the root of its key, digging material makes the root portion section of key attenuate, To select suitable shear strength.The keyway (3) is characterized in that the placement at the edge of the pit (2) is general The band of position of logical key (13) is equipped with keyway wide as the keyway of engine spindle, this be it is spare for certain occasions, Such as plus when woodruff key, such as when adding spare key.In the middle part of the steel plate of knife, to beat side folding and many places are dashed forward and convex are thinned with enhancing.

Only have sword and anodontia, Ren Yi Blunt again for the side for making up common hilted broadsword, encounter cane cut it is bad, often It tears；Especially its end face circumferentially is anodontia, and end face is high in the rotating speed of circumferential location, and cutting function is strong, therefore common single It is the shortcoming of very big loss to ablation energy that the end face of knife is anodontia, and the present invention is improved for many years, such as material, such as 65Mn, such as 40MnB, heat treatment such as carbo-nitriding, mechanism such as hilted broadsword, multitool, stationary knife, knife living, form such as flat cutter, jack knife, tulwar black, spray Black modeling, have seat without seat, as mentioned on the basis of the hay mower hay knife without tool apron, especially provide a kind of lawn The multiple tooth hay knife of grass trimmer.Referring to Figure 12, Figure 13, Figure 14, the multi-tooth hey knife for lawn mower is mainly more by side Tooth (24), apical tooth (25) are held multiple tooth (26), wind wing cutting edge (27), wind wing elliptical aperture (28), in wind wing honeycomb (29) and cutter hub Portion's through-hole (18), key (1), pit (2), keyway (3) are formed；It is characterized in that the side multiple tooth (24) are to be located at cutter hub steel Plate side, that is, original blade place, be to be with the middle through-hole (18) of cutter hub in the direction of advance that hay knife rotates Reference, on one side steel plate side be equipped with multiple teeth, at least one, or up to hundred, such as 16.If tooth is few, preferentially lean on Side is the outermost end by rotation round；And in the outermost end by rotation round, it is multiple tooth (26) to be equipped with the end, at least one, or Up to dozens of, such as 3；Again in multiple tooth (26) junction in the side multiple tooth (24) and the end, it is equipped with the top Tooth (25).It is that the side is multiple tooth (24) referring to Figure 20, the cross of the tooth of the end multiple tooth (26) and the apical tooth (25) The schematic diagram in section, the feature with common tooth.The common tooth is characterized in that the cross section of each tooth has There is certain angle with the steel plate of the stretched back of a bow of steel plate punched (19), hunchbacked both sides, referring to figure (19).The bottom of the back of a bow Portion, which polishes, grinds cutting edge (20), referring to Figure 20.In addition, the side is multiple tooth (24), it is the end multiple tooth (26) and described (in terms of vertical view and stereoscopic schematic diagram) common edge feature of the tooth of apical tooth (25) is that each tooth has side, there is point Angle；And there are cutting edge in two sides or at least one side；Wedge angle or fillet, the less sharp angle mutually passed through, but general shape is tooth Head it is small and root is coarse；The side of the tooth or straight bevel edge or curved, arc, or saw thread form or prominent arc The side of shape or concave arc shape, the especially described tooth is arc, preferably involute.The wind wing of knife is equipped with described Wind wing cutting edge (27), characterized in that the wind wing is equipped at least one or more notch, such as 4, each notch Edge is additionally provided with cutting edge (27), and grass is twined with profit cut-out, can be referring to figure (13).On the wind wing of knife or equipped with the wind wing elliptical aperture (28), the elliptical hole is at least one, or up to hundred, such as 6, there is the booster action of noise reduction with profit, can be referring to figure (15).On the wind wing of knife or equipped with the wind wing honeycomb (29), the wind wing honeycomb (29) is at least one, or up to tens It is a, such as 6, there is the booster action of noise reduction with profit, it can be referring to figure (16)；Especially the wind wing honeycomb (29) is protrusion, Circular cone or pyramid, especially hexagonal pyramid shape, and there is through-hole (30) at middle part, it can be referring to figure (17) and figure (18).

Multi-tooth hey knife for lawn mower, mainly by side multiple tooth (24), apical tooth (25), end multiple tooth (26), wind wing cutting edge (27), the middle through-hole (18) of wind wing elliptical aperture (28), wind wing honeycomb (29) and cutter hub, key (1), pit (2), keyway (3) institute Composition；It is characterized in that：The side multiple tooth (24), holds the head of multiple tooth (26) small and root is coarse at apical tooth (25)；The side Multiple tooth (24) be located at cutter hub steel plate side, be in the direction of advance that hay knife rotates, in the middle through-hole of the cutter hub (18) on the side of the cutter hub steel plate of both sides, multiple teeth for being equipped with；In the outermost end of cutter hub rotation round, it is equipped with the end Multiple tooth (26)；In multiple tooth (26) junction in the side multiple tooth (24) and the end, it is equipped with the apical tooth (25)；Described Side multiple tooth (24) holds the cross section of multiple tooth (26) and apical tooth (25) to have a common feature, it is described common feature is that, Each side multiple tooth (24), the back of a bow for holding the useful steel plate punched in cross section of multiple tooth (26) and apical tooth (25) stretched (19), the steel plate of the both sides of the back of a bow has certain angle, and the bottom of the back of a bow grinds cutting edge (20), is cut with profit Disconnected function；The wind wing of cutter hub is equipped with the wind wing cutting edge (27)；The wind wing of cutter hub is equipped with the wind wing honeycomb (29)； The middle part of cutter hub is equipped with the middle through-hole (18), key (1), pit (2) and keyway (3).The end multiple tooth (26) is located at The outermost end of cutter hub rotation round；And at least there are one the end is multiple tooth (26) for tool.In the side multiple tooth (24) and described End multiple tooth (26) junction be equipped with the apical tooth (25), there is cutting edge at least one side.The side multiple tooth (24), Multiple tooth (26) and apical tooth (25) are held, not only has the bottom of hunchbacked (19), the back of a bow to have cutting edge with common cross section (20) feature, and side multiple tooth (24), end multiple tooth (26) and the apical tooth (25) has common edge feature, side Edge is characterized in that each side multiple tooth (24) holds multiple tooth (26) and apical tooth (25) to have side, there is wedge angle；Its is at least one There is cutting edge in side；The side multiple tooth (24) holds multiple tooth (26) and the side of apical tooth (25) they are straight bevel edge or saw-shaped side, or It is prominent arc-shaped side or concave arc shape side.The wind wing of the cutter hub is equipped with the wind wing cutting edge (27), on the wind wing Edge equipped at least one notch, and notch is additionally provided with cutting edge.The wind wing of the cutter hub is equipped with the wind wing honeycomb (29), and at least there are one the wind wing honeycombs (29) for tool；The wind wing honeycomb (29) is the cone or six of protrusion Pyramid, and there is through-hole (30) at middle part.Knife is equipped with through-hole, so that knife is flattened on spindle end, makes through-hole alignment spindle end mesoporous, must also Big pressure pad circle is put, then puts fastening bolt.It is anti-silk rather than positive silk to pay attention to common bolt all.It is flat that two points of a knife must also be adjusted Weighing apparatus and progress prosthetic foot test.

Only has sword and anodontia again in order to make up the side of common hilted broadsword, especially its end face circumferentially is anodontia lacks It owes, the present invention has made many improvement for many years.Such as material tried all available from 65Mn to 40MnB or general steel plate carburizing；But When manufacturing multiple tooth, to set more give a discount and thickness thinning, be press-formed well with side；Most handy heat stamping and shaping, tooth form are more satisfactory.Heat Processing such as carbo-nitriding also can be used.Mechanism such as hilted broadsword, multitool, stationary knife, knife living, form such as flat cutter, jack knife, tulwar black, and spray is black Modeling, there is seat, no seat, various hay mower hay knives, can all be improved to hay mower of the present invention and use Multiple tooth hay knife.It is reference with the middle through-hole 18 of cutter hub in the direction of advance of hay knife rotation, the one steel plate side in one side It is equipped with multiple teeth, at least one, or up to hundred, such as 16.If tooth is few, preferentially keep to the side to lean on the outermost of rotation round End；And in the outermost end by rotation round, it is equipped with the end multiple tooth 26, at least one, or up to dozens of, such as 3；Again In multiple tooth 26 junction in the side multiple tooth 24 and the end, it is equipped with the apical tooth 25.With it is identical it is multiple up and down modules, It steel plate punched stretched hunchbacked 19, heats and suppresses, so that the both sides steel plate of the back of a bow is had certain angle, and have the arc of logarithm line Degree；The multiple tooth length that blade is considerably increased than hilted broadsword, has more folding swords and there are many impact cutting angle and slip cutting angles, flys in circles in knife When, cutting grass, straw and straw have stronger efficiency, the hunchbacked formula bottom of shear blade to grind structure, it is made to have wearability and save dynamic Power consumes.Because material to be cut is flexible, when single-blade, makes careless phenomenon more, and while more rolling over sword, to hug careless function stronger.Knife is equipped with wind Wing pushes away grass and incites wind action, and fraction has the booster action of noise reduction across wind wing elliptical aperture.Wind wing honeycomb is polygonal pyramid Shape, and there is through-hole at middle part；When hay knife flys in circles, wind wing pushes away grass and incites wind action, and fraction passes through the wind wing Honeycomb 29, collocation suitably just have noise elimination wedge honeycomb effect and preferable noise reduction booster action.Mower blade, grass trimmer, which contains, to be subtracted The gear shaft of fast device is tubulose and retarder from gear drive inner shaft containing noise elimination (100a), so as to cooling of eliminating the noise；Described Its side containing motor of retarder is new equipped with the tubulose for from gear shaft being sky, and inside is logical so as to the cooling of outer blowing air, tooth Wheel is herringbone bear；250 watts of 20000 turns of every point of rotating speed, the power of brushless motor, 5 millimeters 36 volts, output of shaft diameter；Motor The number of teeth 18 of driving gear (88), modulus 0.6, reference circle are 18x0.6=10.8；Remove planetary gear train, the motor driving tooth Wheel (88) engaged from gear (106) with the motor on the motor driven axis newly set, the motor from gear (106) be the number of teeth 38, Modulus 0.6, reference circle are 38x0.6=22.8, and motor driven ratio is 38/18；The motor out of gear with 14x5 bearing phases Match；It is equipped on the motor driven axis newly set from tooth sleeve (100) and female connector gear (102), the female connector gear (102) The number of teeth is 12 and modulus is 1.5, the female connector gear with as 2812 Double-gears (104) on output gear and the first jackshaft The number of teeth be 28, modulus be 1.5, reference circle be that 28 gears of 28x01.5=42 are meshed, the motor driven axis newly set Output gear and the first jackshaft transmission ratio are 28/12；The above transmission ratio is 38/18x28/12=4.9, is more than planet no-load voltage ratio 4.33, actually share；Remaining no-load voltage ratio is roughly the same；28 gears of 2812 Double-gear (104) containing the 28 coaxial numbers of teeth The both ends of 12 gears (104c) of (104a) and 12 numbers of teeth, 2812 Double-gear (104) are respectively provided with small bearing (103), described The outer diameter of small bearing (103) is 14mm, so as to the inner hole at the both ends with 2812 Double-gear (104), the small bearing (103) internal diameter be 5 so as to the first jackshaft activity assemble；Identical 2812 Double-gear of another structure (104) also 12 gears (104c) of 28 gears (104a) containing the 28 coaxial numbers of teeth and 12 numbers of teeth, on the second jackshaft, institute The both ends for stating 2812 Double-gears (104) are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to institute State the inner hole at the both ends of 2812 Double-gears (104), the internal diameter of the small bearing (103) be 5 so as to described second among Axis activity is assembled；The 12 of coaxial 28 gears (104a) in 28 numbers of teeth of 2812 Double-gears (104) on first jackshaft 12 gears (104c) of the number of teeth, 2812 Double-gear (104) identical with another structure on second jackshaft Also 28 gears (104a) containing the 28 coaxial numbers of teeth are meshed, 28 gears (104a) and described first on second jackshaft The second axis transmission ratio between 12 gears (104c) of 12 numbers of teeth of 2812 Double-gears (104) on jackshaft is 28/12 to be 2.33；12 gears (104c) of 28 gears (104a) and 12 numbers of teeth of 2812 Double-gear (104) containing the 28 coaxial numbers of teeth are The machine-shaping in injection mold with polyformaldehyde；The rear axle output par, c of the retarder is containing coaxial half rear axle of length and short Half rear axle is sequentially arranged with rear axle driving reducing gearbox oil sealing on half rear axle of the length, peace closes elastic clip (92), iron washer, safety Clutch cone (90) hangs shelves disk (101), closes to hang containing peace and press from both sides axis in link stopper (91a) rear axle driving gear (91), long axis, the length half Rear axle is equipped with radial cross-drilled hole and is connected with safety clutch cone (90) with will pass through lateral pin nail, and the peace is closed elastic clip (92) and wrapped Clip safety clutch cone (90) and the extensions shelves disk (101), the safety clutch bore (90) and the extension shelves disk (101) and The conjunction containing peace hangs link stopper (91a) rear axle driving gear (91) and is connected, and one end of half rear axle of the length is equipped with axial deep hole, so as to It is inserted into the long axis and presss from both sides axis, be inserted into the axial deep hole that one end of short half rear axle is equipped with and make half rear axle of the length and institute Short half rear axle activity is stated to be connected；It is sequentially arranged with rear axle driving retarder upper cover and oil sealing on short half rear axle, is also filled with successively Another set of peace closes elastic clip (92), iron washer, safety clutch cone (90), hangs shelves disk (101), also is provided on short half rear axle Radial cross-drilled hole is connected with will pass through lateral pin nail with another set of safety clutch cone (90), and the another set of peace closes elastic clip (92) the safety clutch cone (90) and the extension shelves disk (101) are sandwiched, the safety clutch cone on short half rear axle (90) also link stopper (91a) rear axle is hung with unique conjunction containing peace above-mentioned with the extension shelves disk (101) and drive gear (91) phase Connection；The number of teeth that extension link stopper (91a) rear axle driving gear (91) is closed containing peace is 33 teeth and modulus is 2.5；Among described second After 12 gears (104c) of 12 numbers of teeth of 28 gears (104a) on axis hang link stopper (91a) with the conjunction containing peace on the rear axle It is 2.75 that transfer rear axle transmission ratio between axis driving gear (91), which is 33/12,；Retarder resultant gear ratio is 4.3x33/12x28/ 12x28/26=4.3x6.9=30 again, sharing；It is characterized in that, the number of teeth 18 of the motor driving gear (88), modulus 0.6, Reference circle is the metal gear of 18x0.6=10.8, so as to general；Remove planetary gear train, the motor driving gear (88) with it is new If motor driven axis on motor from gear (106) engage, the motor from gear (106) be the number of teeth 38, modulus 0.6, point Degree circle is the metal gear of 38x0.6=22.8, and motor driven ratio is 38/18；The motor out of gear with 14x5 bearing phases Match；The motor is equipped with the sipes hole (106a) of the uniformly distributed quartering to allow four wide pawls from tooth sleeve (100) out of gear It is inserted into, the motor is equipped with the narrow slot hole (106c) of the uniformly distributed quartering to allow four wind from tooth sleeve (100) out of gear It fans pawl to be inserted into, four fan pawls are conducive to radiate；The other end from tooth sleeve (100) set there are four pusher dog so as to The female connector gear (102) being equipped on the motor driven axis newly set is mutually formulated, and the number of teeth of the female connector gear (102) is 12 and modulus be 1.5, the small bearing (103) is equipped in the female connector gear (102), it is interior to be inserted into the motor driven axis newly set； Described to be equipped with big bearing from the outside of tooth sleeve (100), the big bearing is located on reducing gearbox；The motor driven newly set Equipped with from tooth sleeve (100) and female connector gear (102) on axis, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, The other end of the other end of half rear axle of the length and short half rear axle be respectively provided with laterally double groovings and laterally double groovings so as to Rear wheel drive gear is filled, the rear wheel drive gear is 14 tooth modules 2.5, is used in combination the rear wheel drive cartridge driving gear on lawn The number of teeth of trailing wheel gear ring (107) in grass trimmer trailing wheel, the trailing wheel gear ring (107) is after 82 tooth modules 2.5 match big grass trimmer Wheel；The exits the impeller Ye Dao blade angle of the fan of each fan pawl from tooth sleeve (100) is more than 90 degree, before being To the fan of the impeller of blade；It has cold wind effect；The motor of retarder is equipped with circuit for controlling motor；Motor control part is former Reason：

Integrated chip control program, the decoding of built-in chip type rotor-position are purchased in this system Brush-Less DC motor control part Device monitors three motor position sensors, to provide the correct sequential on top, lower part power MOS drivings, there is six step of all-wave to drive Dynamic function, peripheral three-phase drive device are integrated metal-oxide-semiconductor, and upper power switch is PMOS tube, and lower part power switch is NMOS tube, It is current of electric sampling resistor that integrated chip, which has overcurrent protection function, R118 resistance, and current sampling signal is by R117, R119 points Chip current sampling end is sent to after pressure, when current sampling signal value is more than 0.1V, overcurrent protection function activation, motor stops turning Dynamic, overcurrent protection set-point is：

Icurrent=0.1* (R117+R119)/(R118*R119)

When overcurrent events occur, the output of driving chip Fault Output pins is low level, and motor is driven and is believed Number OutputEnable signals drag down, and motor shuts down, and avoid machine loading electric current excessive and electronic device damage occurs, when When Fault Output are low level, the B-E terminal voltages of triode Q24 are also reduced to zero, and cut-off state is switched to by conducting state, BLADE_FAULT signals are that high level stops all motor operations immediately after MCU receives BLADE_FAULT high level；It removes Outside this this, MCU is additionally provided with two level software overcurrent protection function, so as under different load conditions, flexible handling machine operation Action, avoids machine frequent shutdown,

Software overcurrent protection function can be described as follows：

Current of electric sampled signal BLADE_P8, after 7.8 times of operational amplifier operation amplifier, by amplified sampling Current analog signal BLADE_CRT signals are given on pins of the MCU with analog-digital conversion function, by built-in analog-to-digital conversion list After member processing, analog current signal is converted to 12 digital current signals, the overcurrent threshold signal phase that this signal is arranged with MCU Compare, when current signal value is more than overcurrent threshold value, executes run action when corresponding overcurrent.

Left and right movable motor overcurrent protection function having the same, current operator amplifying circuit：

Current amplification factor Counting Formula：

A=1+ (R7/R14) * Icurrent

It is promoted when occurring unusual condition such as machine collision, machine in motor operation course, when machine is overturn, these things occurs Coherent signal is fed back to MCU by the perceptron of part, and MCU is immediately performed brake function,

Specific action process is as follows：

When location bias occurs for the Hall sensor for detecting the above event, hall signal is switched to low electricity by high level Flat, MCU pin is detected to level change, and the BLADE_BRK signals sent out are switched to low level by high level, and process is below After negative circuit processing, generates BLADE_P4 high level signals and give motor drive ic U13, actuating motor brake function left and right Movable motor function having the same；

Driving chip also have make motor forward/reverse function, when machine operation in collide event when, machine execute after Function is moved back, specific action description is as follows：

When collision alarm is sent to MCU by Hall sensor, MCU will control the BLADE_DIR's in motor operation direction Signal is switched to high level by low level, after the processing of following negative circuit, generates low level BLADE_P7 signals to electricity Machine driving chip U13, motor switch inverted status by rotating forward, and machine executes fall back action, motor speed control principle：

Under different working conditions, motor operation speed also differs machine, it is therefore desirable to feed back the operation speed of motor It spends signal and drives core U13 to motor, this system design uses dedicated motor speed detection chip, to generate motor speed control Required feedback voltage, without expensive tachometer, U12, you can realize this function；

Concrete operating principle is as described below：

Be motor driven chip U13 as electronics rotor position decoding Hall sensor output signal occur it is positive or negative Saltus step can make U12 generate the pulse of an amplitude and duration, and parameter is determined by non-essential resistance R101, C48, in U12 Pin 5 at output pulse by U13 error amplifier integrate, to generate a DC level, the level and motor speed Directly proportional, this velocity feedback voltage establishes PWM datums at the pin 13 of U13, and is closed into feedback control loop, output driving The control signal of MOS, meanwhile, the PWM reference voltages at U13 pins 13, which are fed back to MCU, has the pin of analog-digital conversion function, So that MCU learns motor actual motion speed, and control voltage is adjusted according to the difference of actual motion velocity amplitude and setting value；

Interlock circuit is described as follows：

RMOT_DAC is that the target velocity of MCU outputs controls the voltage value, (amplification factor=1+ after operational amplifier amplifies R5/R12), send to the pin 11 of right movable motor driving chip, draw target velocity voltage and the difference of actual speed voltage passes through After the amplification of chip interior error amplifier, the reference voltage signal RMOT_P6 that above-mentioned PWM is adjusted is exported at pin 13；'s Gear and noise elimination inner shaft are increased because wearing big, temperature, rotating speed is high, noise is big, are difficult to ensure longtime running due to must be handled protection post-processing, The gear shaft of retarder is tubulose, retarder from gear drive inner shaft containing noise elimination (100a), so as to cooling of eliminating the noise；Retarder It is to use the air-cooled no planet rear axle driving retarder of electric gear inner shaft, containing new equipped with the tubulose for being sky by motor from gear shaft , described is logical, one end of one end three-way motor inside gear shaft energy high speed rotation, and the gas of the inner via hole of one end is logical The external energy of one end up to ten thousand for turning high-speed electric expreess locomotive, one end is rotatably provided with bearing and from tooth sleeve, described out of gear shaft Containing the noise elimination inner shaft, the inner via hole that the noise elimination inner shaft its other end is included from gear shaft leads to the outside of retarder, The noise elimination wedge of multiple hexagonal pyramid shapes is equipped in the noise elimination inner shaft from contained by gear shaft, the noise elimination inner shaft The noise elimination wedge for the multiple hexagonal pyramid shapes being equipped with close to the hollow pipe of the inner shaft of one end of motor is intensive, the noise elimination The noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of the inner shaft of one end of the separate motor of inner shaft is equipped with is sparse, institute The middle part for stating noise elimination inner shaft be equipped with isolation interconnecting piece so that one end of the close motor of the one end connection slave gear shaft and One end of separate the motor of its other end connection slave gear shaft, to refer to Lighthill parameter and Richards's noise The air-flow that the motor of turbulence noise comes, the port in one end close to motor is compressed, and reflation enters from gear shaft, reflation Close motor of the air-flow through the noise elimination inner shaft one end inner shaft multiple hexagonal pyramid shapes for being equipped with of hollow pipe it is close The noise elimination wedge of collection recompress and after slightly being run by noise elimination inner shaft again in one end by the separate motor of noise elimination inner shaft The sparse noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of axis is equipped with again second compression then spill into again it is described The inner via hole that the noise elimination inner shaft its other end is included from gear shaft leads to the outside of retarder, and reflation is recompressed with compression-expansion And carry out the process of noise elimination noise reduction；Also it is convenient for outer blowing air to cool down；Blade and reducer gear and the protection post-processing of noise elimination inner shaft Its gear and noise elimination inner shaft containing blade and retarder is mostly metal parts, using kelvin effect, after being carried out with high-frequency current Reason；Using single blade component, three kinds of functions can be realized：When the practical mowing of grass trimmer, blade will not skid；Maximum output torque It is 11.87NM；When the practical mowing of grass trimmer, the condition that blade will not skid is：Slipping torque of the blade on tool apron is greater than The maximum output torque 11.87NM of engine；Slipping torque of the blade on tool apron can be measured by this method：By blade Then fastening bolt is blocked engine flywheel with the torque locking of 45NM, then push blade with thrust meter, and records beating for blade Sliding power；Blade slipping torque=skidding power x tests the arm of force；It is measured by the above method：Blade slipping torque=185*0.205= 37.9NM；Blade slipping torque is about 3 times of engine output torque；It ensure that grass trimmer is cut in normal mowing or high load capacity When careless, blade will not lose the connection with tool apron, and blade will not skid；When the blade of grass trimmer knocks barrier, blade meeting It skids；When blade knocks the barriers such as stone, this is very big to the moment impact torque of blade, can be far longer than blade skidding power Square 37.9NM；Exactly because at this point, this structure design of single blade component, blade can skid on tool apron automatically, to subtract It is small to hit to impact force caused by engine, avoid engine damage；After grass trimmer is mowed for a long time, the function of blade assembly is not It can fail；It looks up from undersurface of bottom disc, direction of rotation when blade work is counterclockwise, to tighten the side of blade fastening bolt To be clockwise；Such design ensure that grass trimmer in the process of work, and the locking torque of blade fastening bolt has The trend to become larger；Locking torque without blade fastening bolt is smaller and smaller so that the case where blade loosens；Grass trimmer After actually mowing using 20 hours, measures and unscrew the torque of blade fastening bolt for 48NM；This numerical value, slightly larger than assembly knife The torque 45NM of piece fastening bolt；48NM this test data, real example grass trimmer in the process of work, blade fastening bolt Locking torque have the tendency that becoming larger；This effect, it is ensured that after grass trimmer is mowed for a long time, the function of blade assembly will not be lost Effect；There are two flanged structures on common its mounting plane of common tool apron.This structure does not have overload protection function；Work as knife When piece knocks the barriers such as stone, engine damage is easily led to；The single blade component can meet the needs of actually mowing and Has the function of overload protection；Subsequently, this blade assembly mechanism, it is contemplated that promoted the use of on the grass trimmer of other models； Using kelvin effect, metal works are embedded in rare earth, are post-processed with high-frequency current；Its gear containing blade and retarder And noise elimination inner shaft is mostly metal parts, and using kelvin effect, workpiece is embedded in rare earth, is post-processed with high-frequency current, Special efficacy is self-evident；Workpiece adds rhenium using titanizing aluminium, be placed on containing yttrium oxide, rare earth, indium, clay forming ceramic in, match Penetrated with same position width and laser scanning and manufacture；Blade puts the first edge on a knife or a pair of scissors with carbon fiber 3 D-printing, then with diamond tool, places into nanometer The mixing of grade printing carbon dust, urea, borax buries in soil heat treatment and with frequency-conversion electromagnetic field and laser scanning and with platinum rhodium catalysis, makes Its space lattice dot matrix disperse；Blade fills knife blade at point of a knife position and is first put into nanoscale printing carbon dust, urea, borax Mixing bury in soil carry out carbon, nitrogen and boron and with frequency-conversion electromagnetic field permeation heat treatment；It is characterized in that, the mower blade is more Tooth hay knife, the cross section of the apical tooth (25) of the multiple tooth hay knife are equipped with the stretched back of a bow of steel plate punched, and hunchbacked two The steel plate of side has certain angle, and the bottom of the back of a bow is polished to be formed and grinds cutting edge (20), and the side of the tooth is to contain isogonism The arc of helical, equiangular spiral be logatithmic spiral its with pressure angle equal characteristic everywhere；Steel plate punched stretching die used Upper die forming block (25a) and lower die forming blocks (25b) are multiple equidistant or isogonism briquettings, and steel plate used is first annealed to quench again； It is polygonal pyramid shape that the mower blade, which sets wind wing honeycomb (29), and it is oval that middle part, which is equipped with through-hole (30),；The mowing The blade of machine knife blade sets graphene plating indium；The blade of the mower blade is handled with laser quenching；The wind wing honeycomb it is more The crest line of pyramid and the angle of bottom surface are greater than 115 degree of infiltrations and climb angle θ；Siphon pipe is configured on the mower blade, so as to Reinforce cooling and lubricating and the comprehensive effect to grass.Siphon pipe is configured on the mower blade of hay mower, to add Strong cooling and lubricating and the comprehensive effect to grass；The vitamin containing growth is oozed in the siphon pipe configured on the mower blade Liquid, it is existing to mix broken careless supplementary feeding effect, and comfort and promoted to grow by chaffcutter wound；The mower blade high speed When rotation, being equipped in ring week between the mop cloth strips and lawn of more short softnesses for the chassis of the blade of grass trimmer forms air cushion, Make knife wound less than grass roots；Grass trimmer front is equipped with bumper (109).

The beneficial effects of the invention are as follows：The multiple tooth length that blade is considerably increased than straight knife, there are more folding swords and there are many Impact cutting angle and slip cutting angle；Material to be cut is flexible, and when single-blade makes careless phenomenon more, and rolls over sword more then to hug careless function stronger, favorably Structure is ground in the hunchbacked formula bottom of enhancing cutting straw and straw efficiency, shear blade, so that it is had wearability and saves power consumption, it is described The side of tooth be the arc containing equiangular spiral, equiangular spiral be logatithmic spiral its with pressure angle, equal characteristic is conducive to everywhere Cutting；The upper die forming block (25a) and lower die forming blocks (25b) of steel plate punched stretching die used are multiple equidistant or isogonism pressures Block is convenient for punching press；It is polygonal pyramid shape that the mower blade, which sets wind wing honeycomb (29), and it is ellipse that middle part, which is equipped with through-hole (30), Truly have noise reduction booster action；The blade of the mower blade sets graphene plating indium；The blade of the mower blade, which is used, to swash Photoquenching processing；The crest line of polygonal pyramid shape and the angle of bottom surface of the wind wing honeycomb are greater than 115 degree of infiltrations and climb angle θ；It is described Siphon pipe is configured on mower blade, to reinforce cooling and lubricating and the comprehensive effect to grass, improves product quality；It is described to cut The liquid of the vitamin containing growth is oozed in the siphon pipe configured on careless machine knife blade, it is existing to mix broken careless supplementary feeding effect, and comfort Promoted the effect of growth by chaffcutter wound；When the blade high speed rotation of the grass trimmer, the chassis and lawn of the blade of grass trimmer Between form air cushion, make knife wound less than grass roots；Grass trimmer front is equipped with bumper (109).

The power of common hay mower is used from the vertical cutter shaft of the engine in the middle part of hay mower Belt and belt pulley carry out primary transmission, and rotating speed is changed into 1500 turns every point from every point 3000, then carries out secondary transmission and guide to position In the retarder containing clutch of the driving rear axle at hay mower rear portion, the gear ratio of two stage reducer is up to 5, and rotating speed is from every point 1500 are changed into 300 turns every point of driving rear axle, then carry out three-level transmission, by the coaxial driving gear and lawn of driving rear axle Internal gear gear ring in the trailing wheel of grass trimmer is meshed, and because trailing wheel will adjust different mowing heights, therefore the axis of trailing wheel is in adjusting height It is upper and with driving rear axle cannot coaxial but two axis it is parallel, make hay mower it is maximum from walk speed substantially at one meter per second completely Sufficient customer requirement；But technical barrier is that electricity consumption is limited by power supply on hay mower, motor is according to there is brush Series-wound motor then has brush big to radio interference.Lithium battery group charging source is used on hay mower, motor is then It is to have certain improvement using brushless motor；But to pursue small size height output, the rotating speed of brushless motor is up to every point More than 20000 turns, be greatly more than ten times, this allows for electronic subtract relative to 1500 turns of every point of the initial speed of original retarder The difficulty of fast device greatly increases, and to reducing cost, reduces noise, presses low-temperature-rise, increase no-load voltage ratio and be proposed very high requirement.

It is the tubulose of sky that the garden equipment of retarder, gear shaft are driven with electronic harmonic gear flexbile gear driven rear axle, Inside is logical so that outer blowing air cools down；The harmonic gear flexbile gear driven rear axle drives retarder, using brushless motor 20,000 turns of every point of rotating speed, 250 watts of power, 5 millimeters 36 volts, output of shaft diameter；The number of teeth of motor driving gear (88) is 18；It is described The motor gear of the number of teeth 18 of motor driving gear (88) and three each numbers of teeth 18, the not only rotation of modulus 0.6 but also around edge Planetary gear (98) engagement of the public axis revolution of motor axis, the planetary gear be attached separately to respectively and with public axis etc. Away from planet carrier (97) three planet wheel spindles on；The motor gear of the number of teeth 18 is steel 40Cr；The planetary gear (98) three planetary gears are polyformaldehyde；It is engaged with planetary gear and the internal tooth of the centre wheel of the fixed planetary system of geometrical axis It is steel 40Cr to take turns (99), and modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is NGW types, and N is internal messing tooth Wheel, G is the composite gear among two gear Meshing Pairs, and W is external gear pump；The transmission ratio of the Planetary Gear Transmission is 1+ 60/18 is 4.3, meets transmission ratio recommendation 2.7 to 9, and transmission efficiency is percent 97-99；The public axis of the planet carrier (97) Line center projecting shaft is formed by fan groove equipped with symmetrical two sectors, so as to the planet carrier with motor coaxle Symmetrical two sectors that the public axis centre projecting shaft of output gear (96) is equipped be formed by it is fan-shaped it is convex come interworking insert Merge and be inserted into the inner ring of big bearing (105), the number of teeth of the planet carrier output gear (96) be 26, modulus be 1.5, Reference circle is 26x01.5=39；The tooth of the planet carrier output gear (96) and 2812 Double-gears (104) on the first jackshaft It is 1.5, reference circle is that 28 gears of 28x01.5=42 are meshed that number, which is 28, modulus, 28 gears on first jackshaft The number of teeth of (104a) and the planet carrier output gear (96) is in first between the 26 planet carrier output gear (96) It is 1.077 that countershaft transmission ratio, which is 28/26,；2812 Double-gear (104) is containing 28 gears (104a) of the 28 coaxial numbers of teeth and 12 The both ends of 12 gears (104c) of the number of teeth, 2812 Double-gear (104) are respectively provided with small bearing (103), the small bearing (103) Outer diameter be 14mm, so as to the inner hole at the both ends with 2812 Double-gear (104), the internal diameter of the small bearing (103) Be 5 so as to the first jackshaft activity assemble；Identical 2812 Double-gear (104) of another structure is also containing coaxial 28 gears (104a) of 28 numbers of teeth and 12 gears (104c) of 12 numbers of teeth, on the second jackshaft, 2812 Double-gear (104) both ends are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to 2812 Double-gear (104) inner hole at both ends, the internal diameter of the small bearing (103) are 5 to be assembled with the second jackshaft activity；Institute State 12 gears of 12 numbers of teeth of coaxial 28 gears (104a) in 28 numbers of teeth of 2812 Double-gears (104) on the first jackshaft (104c) described 2812 Double-gear (104) identical with another structure on second jackshaft is also containing coaxial 28 28 gears (104a) of the number of teeth are meshed, on 28 gears (104a) on second jackshaft and first jackshaft It is 2.33 that the second axis transmission ratio between 12 gears (104c) of 12 numbers of teeth of 2812 Double-gears (104), which is 28/12,；Described 2812 12 gears (104c) of 28 gears (104a) and 12 numbers of teeth of the Double-gear (104) containing the 28 coaxial numbers of teeth are being molded with polyformaldehyde Machine-shaping in mold；The rear axle output par, c of the retarder is containing coaxial half rear axle of length and short half rear axle, the length Rear axle driving reducing gearbox oil sealing is sequentially arranged on half rear axle, peace closes elastic clip (92), iron washer, safety clutch cone (90), hangs Shelves disk (101) closes to hang containing peace and presss from both sides axis in link stopper (91a) rear axle driving gear (91), long axis, and half rear axle of the length is equipped with radial Cross-drilled hole is connected with will pass through lateral pin nail with safety clutch cone (90), peace conjunction elastic clip (92) sandwich the safety from Cone (90) and the extension shelves disk (101) are closed, the safety clutch cone (90) and the extension shelves disk (101) hang shelves with described closed containing peace Block (91a) rear axle driving gear (91) is connected, and one end of half rear axle of the length is equipped with axial deep hole, to be inserted into the long axis Axis is pressed from both sides, is inserted into the axial deep hole that one end of short half rear axle is equipped with and makes half rear axle of the length and the short half rear axle activity It is connected；It is sequentially arranged with rear axle driving retarder upper cover and oil sealing on short half rear axle, is also filled with another set of peace conjunction bullet successively Property folder (92), iron washer, safety clutch cone (90), hang shelves disk (101), also be provided with radial cross-drilled hole to lead on short half rear axle It crosses lateral pin nail to be connected with another set of safety clutch cone (90), another set of peace conjunction elastic clip (92) sandwiches described Safety clutch bores (90) and the extension shelves disk (101), the safety clutch cone (90) on short half rear axle and the extension shelves Disk (101) also hangs link stopper (91a) rear axle driving gear (91) with unique conjunction containing peace above-mentioned and is connected；Described closed containing peace is hung The number of teeth of link stopper (91a) rear axle driving gear (91) is 33 teeth and modulus is 2.5；28 gears on second jackshaft 12 gears (104c) of 12 numbers of teeth of (104a) hang link stopper (91a) rear axle with the conjunction containing peace on the rear axle and drive gear (91) it is 2.75 that the transfer rear axle transmission ratio between, which is 33/12,；Retarder resultant gear ratio is 4.3x33/12x28/12x28/26= 4.3x6.9=30 again, sharing；It is characterized in that, the other end of the other end of half rear axle of the length and short half rear axle is each Equipped with laterally double groovings and lateral double groovings with civilian dress rear wheel drive gear, the rear wheel drive gear is 14 tooth modules 2.5, and With trailing wheel gear ring (107) of the rear wheel drive cartridge driving gear in hay mower trailing wheel, the trailing wheel gear ring (107) The number of teeth is that 52 tooth modules 2.5 match small grass trimmer trailing wheel.

It is not at all easy to have innovated a kind of electricity consumption not only having reached no-load voltage ratio but also meet heat dissipation for market multi-configuration item and designs and varieties The gardens machine of the air-cooled no planet rear axle driving retarder of moving gear inner shaft, the axis in gear are pipes with cooling, containing no planet Rear axle drives retarder, and gear used is herringbone bear, and usefulness is self-evident.

The gardens machine that retarder is driven with the air-cooled no planet rear axle of electric gear inner shaft, drives containing no planet rear axle and slows down Device is empty tubulose from gear shaft, inside be it is logical so as to the cooling of outer blowing air, gear is herringbone bear,；Brushless electricity 250 watts of 20000 turns of every point of rotating speed, the power of machine, 5 millimeters 36 volts, output of shaft diameter；The number of teeth 18 of motor driving gear (88), Modulus 0.6, reference circle are 18x0.6=10.8；Remove planetary gear train, the motor driving gear (88) and the motor that newly sets from Motor on moving axis is engaged from gear (106), the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle are 38x0.6=22.8, motor driven ratio is 38/18；The motor matches out of gear with 14x5 bearings；The motor newly set Equipped with from tooth sleeve (100) and female connector gear (102) on driven shaft, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, the female connector gear is 28, modulus with the number of teeth as 2812 Double-gears (104) on output gear and the first jackshaft Be 1.5, reference circle it is that 28 gears of 28x01.5=42 are meshed, the output gear and first of the motor driven axis newly set Jackshaft transmission ratio is 28/12；The above transmission ratio is 38/18x28/12=4.9, is more than planet no-load voltage ratio 4.33, actually shares；Its Remaining no-load voltage ratio is roughly the same；2812 Double-gear (104) is containing 28 gears (104a) of the 28 coaxial numbers of teeth and 12 teeth of 12 numbers of teeth It takes turns (104c), the both ends of 2812 Double-gear (104) are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to the inner hole at the both ends with 2812 Double-gear (104), the internal diameter of the small bearing (103) be 5 so as to The first jackshaft activity assembly；Identical 2812 Double-gear (104) of another structure is also containing the 28 coaxial numbers of teeth 12 gears (104c) of 28 gears (104a) and 12 numbers of teeth, on the second jackshaft, the both ends of 2812 Double-gear (104) It is respectively provided with small bearing (103), the outer diameter of the small bearing (103) is 14mm, so as to the both ends with 2812 Double-gear (104) Inner hole, the internal diameter of the small bearing (103) is 5 to be assembled with the second jackshaft activity；Among described first 12 gears (104c) of 12 numbers of teeth of coaxial 28 gears (104a) in 28 numbers of teeth of 2812 Double-gears (104) on axis with it is described 28 gears of identical 2812 Double-gear (104) of another structure also containing the 28 coaxial numbers of teeth on second jackshaft (104a) is meshed, 28 gears (104a) on second jackshaft and 2812 Double-gears on first jackshaft (104) it is 2.33 that the second axis transmission ratio between 12 gears (104c) of 12 numbers of teeth, which is 28/12,；2812 Double-gear (104) 28 gears (104a) containing the 28 coaxial numbers of teeth and 12 gears (104c) of 12 numbers of teeth are to use polyformaldehyde in injection mold Machine-shaping；The rear axle output par, c of the retarder is containing coaxial half rear axle of length and short half rear axle, half rear axle of the length On be sequentially arranged with rear axle driving reducing gearbox oil sealing, peace closes elastic clip (92), iron washer, safety clutch cone (90), hangs shelves disk (101), contain and press from both sides axis in peace conjunction extension link stopper (91a) rear axle driving gear (91), long axis, half rear axle of the length is equipped with radial cross-drilled hole It is connected with safety clutch cone (90) with will pass through lateral pin nail, the peace closes elastic clip (92) and sandwiches the safety clutch cone (90) and the extension shelves disk (101), the safety clutch cone (90) and the extension shelves disk (101) hang link stopper with described closed containing peace (91a) rear axle driving gear (91) is connected, and one end of half rear axle of the length is equipped with axial deep hole, is pressed from both sides to be inserted into the long axis Axis is inserted into the axial deep hole that one end of short half rear axle is equipped with and makes half rear axle of the length and the short half rear axle activity phase Connection；It is sequentially arranged with rear axle driving retarder upper cover and oil sealing on short half rear axle, is also filled with another set of peace conjunction elasticity successively It presss from both sides (92), iron washer, safety clutch cone (90), hang shelves disk (101), radial cross-drilled hole also is provided with will pass through on short half rear axle Lateral pin is followed closely to be connected with another set of safety clutch cone (90), and the another set of peace closes elastic clip (92) and sandwiches the peace (90) and the extension shelves disk (101) are bored in full clutch, the safety clutch cone (90) on short half rear axle and the extension shelves disk (101) also link stopper (91a) rear axle driving gear (91) is hung with unique conjunction containing peace above-mentioned to be connected；Described closed containing peace hangs shelves The number of teeth of block (91a) rear axle driving gear (91) is 33 teeth and modulus is 2.5；28 gears (104a) on second jackshaft 12 numbers of teeth 12 gears (104c) and the rear axle on it is described closed containing peace hang link stopper (91a) rear axle driving gear (91) between Transfer rear axle transmission ratio be 33/12 be 2.75；Retarder resultant gear ratio is 4.3x33/12x28/12x28/26=4.3x6.9 It=30 times, shares；It is characterized in that, the number of teeth 18 of the motor driving gear (88), modulus 0.6, reference circle are 18x0.6= 10.8 metal gear, so as to general；Remove planetary gear train, the motor driving gear (88) on the motor driven axis newly set Motor engaged from gear (106), the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle are 38x0.6= 22.8 metal gear, motor driven ratio is 38/18；The motor matches out of gear with 14x5 bearings；The motor is from tooth The sipes hole (106a) of the uniformly distributed quartering is equipped in wheel to be inserted into from the four wide pawl of tooth sleeve (100) to allow, the motor from The narrow slot hole (106c) that the uniformly distributed quartering is equipped in gear is inserted into allow from four fan pawls of tooth sleeve (100), and described four A fan pawl is conducive to radiate；The other end from tooth sleeve (100) set there are four pusher dog so as to the motor newly set The female connector gear (102) being equipped on driven shaft is mutually formulated, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, The small bearing (103) is equipped in the female connector gear (102), it is interior to be inserted into the motor driven axis newly set；It is described from tooth sleeve (100) outside is equipped with big bearing, and the big bearing is located on reducing gearbox；It is equipped with from tooth on the motor driven axis newly set Sleeve (100) and female connector gear (102), the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, half rear axle of the length The other end and short half rear axle the other end be respectively provided with laterally double groovings and laterally double groovings with civilian dress rear wheel drive tooth Wheel, the rear wheel drive gear are 14 tooth modules 2.5, are used in combination the rear wheel drive cartridge driving gear in hay mower trailing wheel Trailing wheel gear ring (107), the number of teeth of the trailing wheel gear ring (107) is that 82 tooth modules 2.5 match big grass trimmer trailing wheel；It is described from tooth set The exits the impeller Ye Dao blade angle of the fan of each fan pawl of cylinder (100) is more than 90 degree, is the impeller of Forword vane Fan.

Gardens machine drives retarder with electronic crossed helical gears without planet rear axle, and gear shaft is the tubulose of sky, interior Portion is logical so that outer blowing air cools down；Using brushless motor, from the impeller leaf of the fan of each fan pawl of tooth sleeve (100) Road exit blade angle is more than 90 degree, is the fan of the impeller of Forword vane.Axis in gear is empty with cooling；Gardens Machine is conducive to become using former widely used crossed helical gears with electronic crossed helical gears without planet rear axle driving retarder Fast case, only the former engine belt pulley of importation remove and be changed to motor and gear come power go driving alternating axis Helical gear and rear axle；Using 20000 turns of brushless motor speed, 250 watts of power, 5 millimeters 36 volts, output of shaft diameter；Motor is actively The number of teeth of gear (88) is 18；What is be socketed outside the motor gear of the number of teeth 18 of the motor driving gear (88) is still output In order to transmit, the number of teeth with 2812 Double-gears (104) on the first jackshaft is 28, modulus is 26 gears of gear (96) 1.5, reference circle is that 28 gears of 28x01.5=42 are meshed, 28 gears (104a) on first jackshaft and output gear Wheel (96) the number of teeth be 26 the planet carrier output gear (96) between the first transmission ratio be 28/26 be 1.07；It is described 12 gears (104c) of 28 gears (104a) and 12 numbers of teeth of 2812 Double-gears (104) containing the 28 coaxial numbers of teeth, described 2812 pairs The both ends of gear (104) are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to described 2812 pairs The inner hole at the both ends of gear (104), the internal diameter of the small bearing (103) are 5 to be filled with the first jackshaft activity Match；Identical 2812 Double-gear (104) of another structure is also containing 28 gears (104a) of the 28 coaxial numbers of teeth and 12 numbers of teeth 12 gears (104c), on the second jackshaft, the both ends of 2812 Double-gear (104) are respectively provided with small bearing (103), institute The outer diameter for stating small bearing (103) is 14mm, so as to the inner hole at the both ends with 2812 Double-gear (104), the small axis The internal diameter for holding (103) be 5 so as to the second jackshaft activity assemble；2812 Double-gears on first jackshaft (104) 12 gears (104c) of 12 numbers of teeth of coaxial 28 gears (104a) in 28 numbers of teeth and the institute on second jackshaft Stating identical 2812 Double-gear (104) of another structure, also 28 gears (104a) containing the 28 coaxial numbers of teeth are meshed, institute State 12 teeth of 28 gears (104a) and 12 numbers of teeth of 2812 Double-gears (104) on first jackshaft on the second jackshaft It is 2.33 that the second axis transmission ratio between wheel (104c), which is 28/12,；2812 Double-gear (104) containing the 28 coaxial numbers of teeth 28 Gear (104a) and 12 gears (104c) of 12 numbers of teeth are to use polyformaldehyde machine-shaping in injection mold；The retarder Rear axle output par, c containing coaxial half rear axle of length and short half rear axle, rear axle driving retarder is sequentially arranged on half rear axle of the length Shell oil sealing, peace close elastic clip (92), iron washer, safety clutch cone (90), hang shelves disk (101), closed containing peace and hang link stopper (91a) rear axle Driving gear (91) presss from both sides axis in long axis, half rear axle of the length be equipped with radial cross-drilled hole with will pass through lateral pin nail and the safety from It closes cone (90) to be connected, the peace closes elastic clip (92) and sandwiches the safety clutch cone (90) and the extension shelves disk (101), described Safety clutch bores (90) and the extension shelves disk (101) and is connected with extension link stopper (91a) rear axle driving gear of conjunction containing peace (91), institute The one end for stating long half rear axle is equipped with axial deep hole, axis is pressed from both sides to be inserted into the long axis, set by the one end for being inserted into short half rear axle Half rear axle of the length and the short half rear axle activity is set to be connected in the axial deep hole having；After being sequentially arranged on short half rear axle Axis drives retarder upper cover and oil sealing, is also filled with another set of peace conjunction elastic clip (92), iron washer, safety clutch cone successively (90), shelves disk (101) is hung, also is provided with radial cross-drilled hole on short half rear axle will pass through lateral pin nail and the another set of safety Clutch bores (90) and is connected, and the another set of peace closes elastic clip (92) and sandwiches the safety clutch cone (90) and the extension shelves disk (101), on short half rear axle the safety clutch cone (90) and the extensions shelves disk (101) also with it is above-mentioned uniquely described in Extension link stopper (91a) rear axle driving gear (91) is closed containing peace to be connected；The gardens machine with electronic crossed helical gears without planet after Axis drives retarder, which is characterized in that removes planetary system and is driven with staggered gear, described closed containing peace on rear axle hangs link stopper (91a) rear axle driving gear (91) uses staggeredly helical gear instead, and helix angle is 27 degree；28 gears on second jackshaft 12 gears (104c) of (104a) use screw rod instead, on the rear axle described in use transfer rear axle between staggeredly helical gear instead Three transmission ratios are 5；So resultant gear ratio is 5x28/26x28/12x28/12=30, share just；Half rear axle of the length it is another The other end of one end and short half rear axle is respectively provided with laterally double groovings and lateral double groovings with civilian dress rear wheel drive gear, institute State rear wheel drive gear be 14 tooth modules 2.5, be used in combination the rear wheel drive cartridge driving gear in hay mower trailing wheel after Gear ring (107) is taken turns, the number of teeth of the trailing wheel gear ring (107) is that 52 tooth modules 2.5 match small grass trimmer trailing wheel；

The motor of retarder is equipped with circuit for controlling motor；Motor control part principle：

Integrated chip control program, the decoding of built-in chip type rotor-position are purchased in this system Brush-Less DC motor control part Device monitors three motor position sensors, to provide the correct sequential on top, lower part power MOS drivings, there is six step of all-wave to drive Dynamic function, peripheral three-phase drive device are integrated metal-oxide-semiconductor, and upper power switch is PMOS tube, and lower part power switch is NMOS tube, It is current of electric sampling resistor that integrated chip, which has overcurrent protection function, R118 resistance, and current sampling signal is by R117, R119 points Chip current sampling end is sent to after pressure, when current sampling signal value is more than 0.1V, overcurrent protection function activation, motor stops turning Dynamic, overcurrent protection set-point is：Icurrent=0.1* (R117+R119)/(R118*R119)

When overcurrent events occur, the output of driving chip Fault Output pins is low level, and motor is driven and is believed Number OutputEnable signals drag down, and motor shuts down, and avoid machine loading electric current excessive and electronic device damage occurs, when When Fault Output are low level, the B-E terminal voltages of triode Q24 are also reduced to zero, and cut-off state is switched to by conducting state, BLADE_FAULT signals are that high level stops all motor operations immediately after MCU receives BLADE_FAULT high level；It removes Outside this this, MCU is additionally provided with two level software overcurrent protection function, so as under different load conditions, flexible handling machine operation Action, avoids machine frequent shutdown,

Software overcurrent protection function can be described as follows：

Current of electric sampled signal BLADE_P8, after 7.8 times of operational amplifier operation amplifier, by amplified sampling Current analog signal BLADE_CRT signals are given on pins of the MCU with analog-digital conversion function, by built-in analog-to-digital conversion list After member processing, analog current signal is converted to 12 digital current signals, the overcurrent threshold signal phase that this signal is arranged with MCU Compare, when current signal value is more than overcurrent threshold value, executes run action when corresponding overcurrent；

Left and right movable motor overcurrent protection function having the same, current operator amplifying circuit：

Current amplification factor Counting Formula：

A=1+ (R7/R14) * Icurrent

It is promoted when occurring unusual condition such as machine collision, machine in motor operation course, when machine is overturn, these things occurs Coherent signal is fed back to MCU by the perceptron of part, and MCU is immediately performed brake function,

Specific action process is as follows：

When location bias occurs for the Hall sensor for detecting the above event, hall signal is switched to low electricity by high level Flat, MCU pin is detected to level change, and the BLADE_BRK signals sent out are switched to low level by high level, and process is below After negative circuit processing, generates BLADE_P4 high level signals and give motor drive ic U13, actuating motor brake function left and right Movable motor function having the same；

Driving chip also have make motor forward/reverse function, when machine operation in collide event when, machine execute after Function is moved back, specific action description is as follows：

When collision alarm is sent to MCD by Hall sensor, MCU will control the BLADE_DIR's in motor operation direction Signal is switched to high level by low level, after the processing of following negative circuit, generates low level BLADE_P7 signals to electricity Machine driving chip U13, motor switch inverted status by rotating forward, and machine executes fall back action, and left and right movable motor has phase Same function；

Motor speed control principle：

Under different working conditions, motor operation speed also differs machine, it is therefore desirable to feed back the operation speed of motor It spends signal and drives core U13 to motor, this system design uses dedicated motor speed detection chip, to generate motor speed control Required feedback voltage, without expensive tachometer, U12, you can realize this function；

Concrete operating principle is as described below：

Be motor driven chip U13 as electronics rotor position decoding Hall sensor output signal occur it is positive or negative Saltus step can make U12 generate the pulse of an amplitude and duration, and parameter is determined by non-essential resistance R101, C48, in U12 Pin 5 at output pulse by U13 error amplifier integrate, to generate a DC level, the level and motor speed Directly proportional, this velocity feedback voltage establishes PWM datums at the pin 13 of U13, and is closed into feedback control loop, output driving The control signal of MOS, meanwhile, the PWM reference voltages at U13 pins 13, which are fed back to MCU, has the pin of analog-digital conversion function, So that MCU learns motor actual motion speed, and control voltage is adjusted according to the difference of actual motion velocity amplitude and setting value；

Interlock circuit is described as follows：

RMOT_DAC is that the target velocity of MCU outputs controls the voltage value, (amplification factor=1+ after operational amplifier amplifies R5/R12), send to the pin 11 of right movable motor driving chip, draw target velocity voltage and the difference of actual speed voltage passes through After the amplification of chip interior error amplifier, the reference voltage signal RMOT_P6 that above-mentioned PWM is adjusted is exported at pin 13.

Gardens intelligent grass-removing four planetary gear rear-guard moving gear box of three-level, which is characterized in that it is hay mower With four planetary gear meshing gear reduction box (108) of three-level, brushless motor, 20000 turns of rotating speed, 150 watts of power, 36 are used 5 millimeters volt, output of shaft diameter, there is speed control circuit；The number of teeth of motor driving gear (88) is 20；The motor driving gear (88) motor gear of the number of teeth 20 is engaged with four planetary gears (98) on the first order planet carrier of third-level planetary system Transmission, the gear use helical gear, and helix angle is 12.7 degree；Both rotations of four each numbers of teeth 19, modulus 0.6 Again around the planetary gear (98) of the public axis revolution along motor axis, be attached separately to respectively and the planet carrier equidistant with public axis (97) on four planet wheel spindles；The motor gear of the number of teeth 20 is steel 40Cr；Four rows of the planetary gear (98) Star-wheel is polyformaldehyde SP500；It is engaged with planetary gear and the internal gear of the centre wheel of the fixed planetary system of geometrical axis (99) It is steel 40Cr, modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is NGW types, and N is inside engaged gear, and G is Composite gear among two gear Meshing Pairs, W are external gear pumps；The transmission ratio of the Planetary Gear Transmission is 1+60/20 It is 4, meets transmission ratio recommendation 2.7 to 9, transmission efficiency is percent 97-99；Center output on the first order planet carrier Gear uses helical gear, helix angle with four planetary gears (98) engaged transmission on the planet carrier of the second level, the gear It is 12.7 degree, four each numbers of teeth 19 of the second level, the not only rotation of modulus 0.6 but also the row to revolve round the sun around the public axis along motor axis Star gear (98), be attached separately to respectively and on four planet wheel spindles of the planet carrier (97) equidistant with public axis；Described first Center output gear on grade planet carrier is steel 40Cr, four rows of four planetary gears (98) on the planet carrier of the second level Star-wheel is polyformaldehyde SP500；It is engaged with planetary gear and the internal gear of the centre wheel of the fixed planetary system of geometrical axis (99) It is steel 40Cr, modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is also NGW types, and N is inside engaged gear, G It is the composite gear among two gear Meshing Pairs, W is external gear pump；The transmission ratio of the Planetary Gear Transmission of the second level Be 1+60/19 be 3.16；Center output gear on the second level planet carrier and three planet teeth on third level planet carrier (98) engaged transmission is taken turns, the gear uses helical gear, and helix angle is 12.7 degree, three each numbers of teeth 18 of the third level, The not only rotation of modulus 0.6 but around along motor axis public axis revolution planetary gear (98), be attached separately to respectively and with public affairs On three planet wheel spindles of the equidistant planet carrier of axis (97)；Center output gear on the second level planet carrier is steel 40Cr , three planetary gears of the number of teeth 18, modulus 0.6, three planetary gears (98) on the planet carrier of the third level are not polyformaldehyde SP500's but steel 40Cr；It is engaged with planetary gear and the internal gear of the centre wheel of the fixed planetary system of geometrical axis (99) is Steel 40Cr's, modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is also NGW types, and N is inside engaged gear, and G is Composite gear among two gear Meshing Pairs, W are external gear pumps；The transmission ratio of the Planetary Gear Transmission of the third level is 1+60/18 is 4.33；Above three-level resultant gear ratio is 4x3.16x4.33=55 times, and 20000 turns/55=360 of rotating speed is furnished with Speed control circuit shares；

Cutter blade for mowing machine and reducer gear and the protection post-processing of noise elimination inner shaft, gear containing blade and retarder and Noise elimination inner shaft and protection post-processing, the gear shaft of retarder are tubulose and retarder from gear drive inner shaft containing noise elimination (100a), so as to cooling of eliminating the noise；Retarder is to drive retarder with the air-cooled no planet rear axle of electric gear inner shaft, contains motor Other be newly equipped with from gear shaft is empty tubulose, and inside is logical so as to the cooling of outer blowing air, and gear is herringbone bear；Nothing 250 watts of 20000 turns of every point of rotating speed, the power of brush motor, 5 millimeters 36 volts, output of shaft diameter；The number of teeth of motor driving gear (88) 18, modulus 0.6, reference circle are 18x0.6=10.8；Remove planetary gear train, motor motor driving gear (88) and newly set Motor on driven shaft is engaged from gear (106), the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle are 38x0.6=22.8, motor driven ratio is 38/18；The motor matches out of gear with 14x5 bearings；The motor newly set Equipped with from tooth sleeve (100) and female connector gear (102) on driven shaft, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, the female connector gear is 28, modulus with the number of teeth as 2812 Double-gears (104) on output gear and the first jackshaft Be 1.5, reference circle it is that 28 gears of 28x01.5=42 are meshed, the output gear and first of the motor driven axis newly set Jackshaft transmission ratio is 28/12；The above transmission ratio is 38/18x28/12=4.9, is more than planet no-load voltage ratio 4.33, actually shares；Its Remaining no-load voltage ratio is roughly the same；2812 Double-gear (104) is containing 28 gears (104a) of the 28 coaxial numbers of teeth and 12 teeth of 12 numbers of teeth It takes turns (104c), the both ends of 2812 Double-gear (104) are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to the inner hole at the both ends with 2812 Double-gear (104), the internal diameter of the small bearing (103) be 5 so as to The first jackshaft activity assembly；Identical 2812 Double-gear (104) of another structure is also containing the 28 coaxial numbers of teeth 12 gears (104c) of 28 gears (104a) and 12 numbers of teeth, on the second jackshaft, the both ends of 2812 Double-gear (104) It is respectively provided with small bearing (103), the outer diameter of the small bearing (103) is 14mm, so as to the both ends with 2812 Double-gear (104) Inner hole, the internal diameter of the small bearing (103) is 5 to be assembled with the second jackshaft activity；Among described first 12 gears (104c) of 12 numbers of teeth of coaxial 28 gears (104a) in 28 numbers of teeth of 2812 Double-gears (104) on axis with it is described 28 gears of identical 2812 Double-gear (104) of another structure also containing the 28 coaxial numbers of teeth on second jackshaft (104a) is meshed, 28 gears (104a) on second jackshaft and 2812 Double-gears on first jackshaft (104) it is 2.33 that the second axis transmission ratio between 12 gears (104c) of 12 numbers of teeth, which is 28/12,；2812 Double-gear (104) 28 gears (104a) containing the 28 coaxial numbers of teeth and 12 gears (104c) of 12 numbers of teeth are to use polyformaldehyde in injection mold Machine-shaping；The rear axle output par, c of the retarder is containing coaxial half rear axle of length and short half rear axle, half rear axle of the length On be sequentially arranged with rear axle driving reducing gearbox oil sealing, peace closes elastic clip (92), iron washer, safety clutch cone (90), hangs shelves disk (101), contain and press from both sides axis in peace conjunction extension link stopper (91a) rear axle driving gear (91), long axis, half rear axle of the length is equipped with radial cross-drilled hole It is connected with safety clutch cone (90) with will pass through lateral pin nail, the peace closes elastic clip (92) and sandwiches the safety clutch cone (90) and the extension shelves disk (101), the safety clutch cone (90) and the extension shelves disk (101) hang link stopper with described closed containing peace (91a) rear axle driving gear (91) is connected, and one end of half rear axle of the length is equipped with axial deep hole, is pressed from both sides to be inserted into the long axis Axis is inserted into the axial deep hole that one end of short half rear axle is equipped with and makes half rear axle of the length and the short half rear axle activity phase Connection；It is sequentially arranged with rear axle driving retarder upper cover and oil sealing on short half rear axle, is also filled with another set of peace conjunction elasticity successively It presss from both sides (92), iron washer, safety clutch cone (90), hang shelves disk (101), radial cross-drilled hole also is provided with will pass through on short half rear axle Lateral pin is followed closely to be connected with another set of safety clutch cone (90), and the another set of peace closes elastic clip (92) and sandwiches the peace (90) and the extension shelves disk (101) are bored in full clutch, the safety clutch cone (90) on short half rear axle and the extension shelves disk (101) also link stopper (91a) rear axle driving gear (91) is hung with unique conjunction containing peace above-mentioned to be connected；Described closed containing peace hangs shelves The number of teeth of block (91a) rear axle driving gear (91) is 33 teeth and modulus is 2.5；28 gears (104a) on second jackshaft 12 numbers of teeth 12 gears (104c) and the rear axle on it is described closed containing peace hang link stopper (91a) rear axle driving gear (91) between Transfer rear axle transmission ratio be 33/12 be 2.75；Retarder resultant gear ratio is 4.3x33/12x28/12x28/26=4.3x6.9 It=30 times, shares；It is characterized in that, the number of teeth 18 of the motor driving gear (88), modulus 0.6, reference circle are 18x0.6= 10.8 metal gear, so as to general；Remove planetary gear train, the motor driving gear (88) on the motor driven axis newly set Motor engaged from gear (106), the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle are 38x0.6= 22.8 metal gear, motor driven ratio is 38/18；The motor matches out of gear with 14x5 bearings；The motor is from tooth The sipes hole (106a) of the uniformly distributed quartering is equipped in wheel to be inserted into from the four wide pawl of tooth sleeve (100) to allow, the motor from The narrow slot hole (106c) that the uniformly distributed quartering is equipped in gear is inserted into allow from four fan pawls of tooth sleeve (100), and described four A fan pawl is conducive to radiate；The other end from tooth sleeve (100) set there are four pusher dog so as to the motor newly set The female connector gear (102) being equipped on driven shaft is mutually formulated, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, The small bearing (103) is equipped in the female connector gear (102), it is interior to be inserted into the motor driven axis newly set；It is described from tooth sleeve (100) outside is equipped with big bearing, and the big bearing is located on reducing gearbox；It is equipped with from tooth on the motor driven axis newly set Sleeve (100) and female connector gear (102), the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, half rear axle of the length The other end and short half rear axle the other end be respectively provided with laterally double groovings and laterally double groovings with civilian dress rear wheel drive tooth Wheel, the rear wheel drive gear are 14 tooth modules 2.5, are used in combination the rear wheel drive cartridge driving gear in hay mower trailing wheel Trailing wheel gear ring (107), the number of teeth of the trailing wheel gear ring (107) is that 82 tooth modules 2.5 match big grass trimmer trailing wheel；It is described from tooth set The exits the impeller Ye Dao blade angle of the fan of each fan pawl of cylinder (100) is more than 90 degree, is the impeller of Forword vane Fan；

The motor of retarder is equipped with circuit for controlling motor；Motor control part principle：

Integrated chip control program, the decoding of built-in chip type rotor-position are purchased in this system Brush-Less DC motor control part Device monitors three motor position sensors, to provide the correct sequential on top, lower part power MOS drivings, there is six step of all-wave to drive Dynamic function, peripheral three-phase drive device are integrated metal-oxide-semiconductor, and upper power switch is PMOS tube, and lower part power switch is NMOS tube, It is current of electric sampling resistor that integrated chip, which has overcurrent protection function, R118 resistance, and current sampling signal is by R117, R119 points Chip current sampling end is sent to after pressure, when current sampling signal value is more than 0.1V, overcurrent protection function activation, motor stops turning Dynamic, overcurrent protection set-point is：

Icurrent=0.1* (R117+R119)/(R118*R119)

When overcurrent events occur, the output of driving chip Fault Output pins is low level, and motor is driven and is believed Number OutputEnable signals drag down, and motor shuts down, and avoid machine loading electric current excessive and electronic device damage occurs, when When Fault Output are low level, the B-E terminal voltages of triode Q24 are also reduced to zero, and cut-off state is switched to by conducting state, BLADE_FAULT signals are that high level stops all motor operations immediately after MCU receives BLADE_FAULT high level；It removes Outside this this, MCU is additionally provided with two level software overcurrent protection function, so as under different load conditions, flexible handling machine operation Action, avoids machine frequent shutdown,

Software overcurrent protection function can be described as follows：

Current of electric sampled signal BLADE_P8, after 7.8 times of operational amplifier operation amplifier, by amplified sampling Current analog signal BLADE_CRT signals are given on pins of the MCU with analog-digital conversion function, by built-in analog-to-digital conversion list After member processing, analog current signal is converted to 12 digital current signals, the overcurrent threshold signal phase that this signal is arranged with MCU Compare, when current signal value is more than overcurrent threshold value, executes run action when corresponding overcurrent.

Left and right movable motor overcurrent protection function having the same, current operator amplifying circuit：

Current amplification factor Counting Formula：

A=1+ (R7/R14) * Icurrent

It is promoted when occurring unusual condition such as machine collision, machine in motor operation course, when machine is overturn, these things occurs Coherent signal is fed back to MCU by the perceptron of part, and MCU is immediately performed brake function,

Specific action process is as follows：

When location bias occurs for the Hall sensor for detecting the above event, hall signal is switched to low electricity by high level Flat, MCU pin is detected to level change, and the BLADE_BRK signals sent out are switched to low level by high level, and process is below After negative circuit processing, generates BLADE_P4 high level signals and give motor drive ic U13, actuating motor brake function left and right Movable motor function having the same；

Driving chip also have make motor forward/reverse function, when machine operation in collide event when, machine execute after Function is moved back, specific action description is as follows：

When collision alarm is sent to MCU by Hall sensor, MCU will control the BLADE_DIR's in motor operation direction Signal is switched to high level by low level, after the processing of following negative circuit, generates low level BLADE_P7 signals to electricity Machine driving chip U13, motor switch inverted status by rotating forward, and machine executes fall back action,

Motor speed control principle：

Under different working conditions, motor operation speed also differs machine, it is therefore desirable to feed back the operation speed of motor It spends signal and drives core U13 to motor, this system design uses dedicated motor speed detection chip, to generate motor speed control Required feedback voltage, without expensive tachometer U12, you can realize this function；

Concrete operating principle is as described below：

Be motor driven chip U13 as electronics rotor position decoding Hall sensor output signal occur it is positive or negative Saltus step can make U12 generate the pulse of an amplitude and duration, and parameter is determined by non-essential resistance R101, C48, in U12 Pin 5 at output pulse by U13 error amplifier integrate, to generate a DC level, the level and motor speed Directly proportional, this velocity feedback voltage establishes PWM datums at the pin 13 of U13, and is closed into feedback control loop, output driving The control signal of MOS, meanwhile, the PWM reference voltages at U13 pins 13, which are fed back to MCU, has the pin of analog-digital conversion function, So that MCU learns motor actual motion speed, and control voltage is adjusted according to the difference of actual motion velocity amplitude and setting value；

Interlock circuit is described as follows：

RMOT_DAC is that the target velocity of MCU outputs controls the voltage value, (amplification factor=1+ after operational amplifier amplifies R5/R12), send to the pin 11 of right movable motor driving chip, draw target velocity voltage and the difference of actual speed voltage passes through After the amplification of chip interior error amplifier, the reference voltage signal RMOT_P6 that above-mentioned PWM is adjusted is exported at pin 13；Institute Cutter blade for mowing machine and reducer gear and noise elimination inner shaft the protection post-processing stated, which is characterized in that it contains blade and retarder Gear and noise elimination inner shaft is increased because wearing big, temperature, rotating speed is high, noise is big, protection must be handled due to be difficult to ensure longtime running after Reason, the gear shaft of retarder are tubuloses, retarder from gear drive inner shaft containing noise elimination (100a), so as to cooling of eliminating the noise；Subtract Fast device is to drive retarder with the air-cooled no planet rear axle of electric gear inner shaft, is empty containing being newly equipped with from gear shaft by motor Tubulose, described is logical, one end of one end three-way motor inside gear shaft energy high speed rotation, the inner via hole of one end Gas leads to one end up to ten thousand for turning high-speed electric expreess locomotive, and the external energy of one end is rotatably provided with bearing and from tooth sleeve, described from gear Axis includes the noise elimination inner shaft, and the inner via hole that the noise elimination inner shaft its other end is included from gear shaft leads to the outer of retarder Portion is equipped with the noise elimination wedge of multiple hexagonal pyramid shapes, in the noise elimination in the noise elimination inner shaft from contained by gear shaft The noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of the inner shaft of one end of the close motor of axis is equipped be it is intensive, it is described The noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of the inner shaft of one end of the separate motor of noise elimination inner shaft is equipped with is sparse , the middle part of the noise elimination inner shaft is equipped with isolation interconnecting piece so that one end connects the one of the close motor of the slave gear shaft One end of the separate motor of end and its other end connection slave gear shaft, to make an uproar with reference to Lighthill parameter and Richards The air-flow that the motor of the turbulence noise of sound comes, the port in one end close to motor is compressed, and reflation enters from gear shaft, then Multiple hexagonal pyramid shapes that the hollow pipe of the inner shaft of one end of close motor of the air-flow of expansion through the noise elimination inner shaft is equipped with Intensive noise elimination wedge recompression and again by one end of the separate motor of noise elimination inner shaft after slightly being run by noise elimination inner shaft The sparse noise elimination wedge of multiple hexagonal pyramid shapes that is equipped with of hollow pipe of inner shaft second compression then spills into institute again again The inner via hole that the slave gear shaft stated includes the noise elimination inner shaft its other end leads to the outside of retarder, again with compression-expansion recompression Expand and carry out the process of noise elimination noise reduction；Also it is convenient for outer blowing air to cool down；After blade and reducer gear and the protection of noise elimination inner shaft It is mostly metal parts to handle its gear and noise elimination inner shaft containing blade and retarder, using kelvin effect, is carried out with high-frequency current Post-processing；Using single blade component, three kinds of functions can be realized：1, when the practical mowing of grass trimmer, blade will not skid；It is maximum defeated It is 11.87NM to go out torque；When the practical mowing of grass trimmer, the condition that blade will not skid is：Slipping torque of the blade on tool apron It is greater than the maximum output torque 11.87NM of engine；Slipping torque of the blade on tool apron can be measured by this method： By blade fastening bolt with the torque locking of 45NM, then engine flywheel is blocked, then blade is pushed with thrust meter, and records knife The skidding power of piece；Blade slipping torque=skidding power x tests the arm of force；It is measured by the above method：Blade slipping torque=185* 0.205=37.9NM；Blade slipping torque is about 3 times of engine output torque；It ensure that grass trimmer mow normal or When high load capacity is mowed, blade will not lose the connection with tool apron, and blade will not skid；2, when the blade of grass trimmer knocks barrier When, blade can skid；When blade knocks the barriers such as stone, this is very big to the moment impact torque of blade, can be far longer than Blade slipping torque 37.9NM；Exactly because at this point, this structure design of single blade component, blade can be beaten on tool apron automatically It is sliding, it is hit to impact force caused by engine to reduce, avoids engine damage；3, after grass trimmer is mowed for a long time, blade The function of component will not fail；It looks up from undersurface of bottom disc, direction of rotation when blade work is counterclockwise, to tighten blade The direction of fastening bolt is clockwise；Such design ensure that grass trimmer in the process of work, blade fastening bolt Locking torque have the tendency that becoming larger；Locking torque without blade fastening bolt is smaller and smaller so that blade loosened Situation；Grass trimmer measures after actually mowing using 20 hours and unscrews the torque of blade fastening bolt for 48NM；This numerical value, Slightly larger than the torque 45NM of blades fastening bolt；48NM this test data, real example grass trimmer in the process of work, The locking torque of blade fastening bolt has the tendency that becoming larger；This effect, it is ensured that after grass trimmer is mowed for a long time, blade assembly Function will not fail；There are two flanged structures on common its mounting plane of common tool apron.This structure does not have overload and protects Protective function；When blade knocks the barriers such as stone, engine damage is easily led to；The single blade component, which can meet, actually to be cut The demand of grass, and have the function of overload protection；Subsequently, this blade assembly mechanism can above be pushed away in the grass trimmer of other models It is wide to use；Using kelvin effect, metal works are embedded in rare earth, are post-processed with high-frequency current；It contains blade and deceleration The gear and noise elimination inner shaft of device are mostly metal parts, using kelvin effect, workpiece are embedded in rare earth, after being carried out with high-frequency current Processing, special efficacy is self-evident；Workpiece adds rhenium using titanizing aluminium, is placed on the molding pottery containing yttrium oxide, rare earth, indium, clay In porcelain, be equipped with same position width penetrate and laser scanning and manufacture；Blade uses carbon fiber 3 D-printing, then is put the first edge on a knife or a pair of scissors with diamond tool, then The mixing for being put into printing carbon dust, urea, borax buries in soil heat treatment and with frequency-conversion electromagnetic field and laser scanning and with platinum rhodium catalysis, Make its space lattice dot matrix disperse.Blade fills knife blade at point of a knife position and is first put into nanoscale printing carbon dust, urea, boron The mixing of sand, which is buried, to be carried out carbon, nitrogen and boron and is heat-treated with frequency-conversion electromagnetic field permeation in soil；It is characterized in that, the mower blade is Multiple tooth hay knife, the cross section of the apical tooth (25) of the multiple tooth hay knife is equipped with the back of a bow for using steel plate punched stretched, hunchbacked The steel plate of both sides has certain angle, and the bottom of the back of a bow is polished to be formed and grinds cutting edge (20), the side of the tooth be containing etc. The arc of angle spread, equiangular spiral be logatithmic spiral its with pressure angle equal characteristic everywhere；Steel plate punched stretching die used Upper die forming block (25a) and lower die forming blocks (25b) be multiple equidistant or isogonism briquetting, steel plate used is first annealed to be quenched again Fire；It is polygonal pyramid shape that the mower blade, which sets wind wing honeycomb (29), and it is oval that middle part, which is equipped with through-hole (30),；It is described to cut The blade of careless machine knife blade sets graphene plating indium；The blade of the mower blade is handled with laser quenching.

Advantageous effect is：Grass trimmer front is equipped with bumper (109), and bumper is equipped with flexible comb, is additionally provided with magnetic force spy Device and doppler detector are surveyed, with iron pipe in defense sector.The multiple tooth length that blade is considerably increased than straight knife has more folding swords and has A variety of impact cutting angles and slip cutting angle；It allows careless phenomenon more when the careless single-blade cut, and rolls over sword more then to hug careless function stronger, be conducive to increase Structure is ground at the hunchbacked formula bottom of strong cutting straw and straw efficiency, shear blade, so that it is had wearability and is saved power consumption, the tooth Side be the arc containing equiangular spiral, equiangular spiral be logatithmic spiral its with pressure angle, equal characteristic is conducive to cut everywhere It cuts；The upper die forming block (25a) and lower die forming blocks (25b) of steel plate punched stretching die used are multiple equidistant or isogonism briquettings Convenient for punching press；It is polygonal pyramid shape that the mower blade, which sets wind wing honeycomb (29), and it is oval that middle part, which is equipped with through-hole (30), Truly have noise reduction booster action；The blade of the mower blade sets graphene plating indium；The blade laser of the mower blade Quenching treatment；Improve product quality.

Description of the drawings

Fig. 1 is the schematic diagram of the inside of the brushless motor multirow star rear axle driving retarder of hay mower.

Fig. 2 is that the motor of retarder is equipped with the schematic diagram of motor driving gear (88).

Fig. 3 is the schematic diagram of the O-ring seal (89) of the motor assembly of retarder.

Fig. 4 is the schematic diagram of safety clutch cone (90).

Fig. 5 is the schematic diagram of the behind of safety clutch cone (90).

Fig. 6 is that the schematic diagram for hanging link stopper (91a) rear axle driving gear (91) is closed containing peace.

Fig. 7 is the schematic diagram that peace closes elastic clip (92).

Fig. 8 is the schematic diagram of the upper cover (93) of the rear axle driving retarder of hay mower.

Fig. 9 is the schematic diagram of the catch (94) of the motor driving gear of retarder.

Figure 10 is the schematic diagram of the motor shrouding disc (95) of the motor of retarder.

Figure 11 is the schematic diagram with the planet carrier output gear of motor coaxle (96).

Figure 12 is the schematic diagram with the planet carrier of motor coaxle (97).

Figure 13 is the schematic diagram of planetary gear (98).

Figure 14 is the schematic diagram of the internal gear (99) of planetary system.

Figure 15 is the schematic diagram from the end face of tooth sleeve (100).

Figure 16 is the schematic diagram for hanging shelves disk (101).

Figure 17 is the schematic diagram from tooth sleeve (100).

Figure 18 is the schematic diagram of female connector gear (102).

Figure 19 is the schematic diagram from the another angle of tooth sleeve (100).

Figure 20 is the schematic diagram from the section of the major part of tooth sleeve (100).

Figure 21 is the schematic diagram from the section of the major part of tooth sleeve (100).

Figure 22 is the schematic diagram of small bearing (103).

Figure 23 is the diagrammatic cross-section of Double-gear (104).

Figure 24 is the schematic diagram of big bearing (105).

Figure 25 is the schematic diagram of the end face of Double-gear (104).

Figure 26 is the schematic diagram of the side of Double-gear (104).

Figure 27 is the schematic diagram of the inside of no planet rear axle driving retarder.

Figure 28 is schematic diagram of the motor from gear (106).

Figure 29 is schematic diagram of the motor from the end face of gear (106).

Figure 30 is a kind of schematic diagram of tool function curve clutch cone (1a).

Figure 31 is a kind of schematic diagram of noise elimination inner shaft (100a).

Figure 32 is a kind of schematic diagram having tooth engagement of interlocking.

Figure 33 is a kind of schematic diagram of staggered gear (71).

Figure 34 is the schematic diagram of bevel gear (82).

Figure 35 is the schematic cross-sectional view of bevel gear (82).

Figure 36 is the schematic diagram with Ao Likang cycloid tooth hypoid gears.

Figure 37 is the schematic diagram for having staggered tooth meshed gears reduction box.

Figure 38 is the stereoscopic schematic diagram of the front of the clutch slider of lawn machine gear-box.

Figure 39 is the stereoscopic schematic diagram at the rear portion of the clutch slider of lawn machine gear-box.

Figure 40 is the diagrammatic cross-section of the gear wheel of lawn machine gear-box.

Figure 41 is the diagrammatic cross-section of the gear wheel with bearing of lawn machine gear-box.

Figure 42 is the side schematic view of clutch slider.

Figure 43 is the schematic rear view of clutch slider.

Figure 44 is the schematic diagram of the assembly of clutch slider.

Figure 45 is the schematic diagram for having bevel gear meshed gears reduction box.

Figure 46 is the schematic diagram for the inside for having bevel gear meshed gears reduction box.

Figure 47 is the schematic diagram for the inside for having four planetary gear meshed gears reduction box of three-level.

Figure 48 is the schematic diagram of the gear ring of the trailing wheel of hay mower.

Figure 49 is the another schematic diagram of the gear ring of the trailing wheel of hay mower.

Figure 50 is the circuit for controlling motor schematic diagram of hay mower.

Figure 51 is the motor overcurrent protection circuit of hay mower and left and right movable motor braking circuit schematic diagram.

Figure 52 is the circuit diagram of the speed of travel of the control motor of hay mower.

Figure 53 is the schematic diagram using four planetary gear meshed gears reduction box of three-level of hay mower.

Figure 54 is the schematic diagram of four planetary gear meshing gear reduction box of hay mower three-level.

Figure 55 is the schematic diagram of lawn mower blade.

Figure 56 is the schematic diagram of the equidistant punching press of module above and below lawn mower blade.

Figure 57 is the schematic diagram of the blade of the camber line of hay mower tool logatithmic spiral.

Figure 58 is the schematic diagram of the wind wing of the blade of the camber line of hay mower tool logatithmic spiral.

Figure 59 is the sectional view of the polygonal pyramid of the wind wing of the blade of the camber line of hay mower tool logatithmic spiral.

Figure 60 is the schematic diagram of the polygonal pyramid of the wind wing of the blade of the camber line of hay mower tool logatithmic spiral.

Figure 61 is the schematic diagram of the back of a bow of the blade of hay mower tool logatithmic spiral camber line (19a).

Figure 62 is the schematic diagram that the back of a bow of the blade of hay mower tool logatithmic spiral camber line (19a) polishes.

Figure 63 is the schematic diagram of the blade and security protection piece (109) of riding mower tool logatithmic spiral camber line.

Figure 64 is the schematic diagram of the rear axle of the reduction box (108) of hay mower.

Figure 65 is the schematic diagram of the hay mower of no front-wheel.

Figure 66 is the schematic diagram of the bottom of the hay mower of no front-wheel.

Figure 67 is the schematic diagram of the high tension protection circuit of the grass trimmer with protective device.

Figure 68 is the schematic diagram of the low-voltage protection circuit of the grass trimmer with protective device.

Figure 69 is the schematic diagram of the voltage conversion circuit of the grass trimmer with protective device.

As shown, in figure：

1a1. is upward slope arc wave；1a2. is that top arc is convex；1a3. is the straight ripple of descending；

76. thick straight pin；77. spring；78. thin straight pin；41d. sliding sleeves；

The mono- group of side 42d.；43d. inner cone flanges；

88. motor driving gear；

89. electricity secret seal；Half rear axles of 94a. long；Short half rear axles of 94b.；95. motor cover；95a. motor cover is biased from axis Hole；

98. planetary gear；106a. sipes hole；100. from tooth sleeve；106c. narrow slots hole；100a. noise elimination inner shafts；

97. planet carrier；

99. the internal gear of centre wheel；

96. planet carrier output gear；

105. big bearing；

104. 2812 Double-gears；

93. upper cover；111. hilted broadsword；112. hilted broadsword seat；100a. noise elimination inner shafts；

104a.28 gear；

104c.12 gear；

103. small bearing；

92. peace closes elastic clip；

90. safety clutch is bored；Block is bored in 90c. clutches；90a. clutch taper pin slots；

101. hanging shelves disk；

91a. peaces, which are closed, hangs link stopper；

Gear is driven 91. being closed containing peace and hanging link stopper (91a) rear axle；

107. trailing wheel gear ring；107a. gear ring slots；107c. gear rings sink recessed；The floating support of 107d. gear rings；

108. gear reduction box；

19a. logatithmic spiral camber lines；

109. security protection piece；

1a4. is bottom ripple (1a4)；1a5. is flange (1a5)；

1a6. is porous (1a6)；1a7. is rear driver plate (1a7)；

1a8. is multiple screw rods (1a8)

1a. is clutch slider, is sine wave type clutch block herein.

1c. is upper shift fork head；2c. is to set aside plug；

3c. is arched arm；4c. is sliding pulling sleeve；

5c. is thrust bearing shim；6c. is crossed helical gears；

8c. is lower housing；9c. is short axle；

1d. is upper shift fork head；2d. is to set aside plug；

3d. is arched arm；4d. is sliding pulling sleeve；

5d. is thrust bearing shim；6d. is crossed helical gears；

2e. is threaded hydraulic fluid port；3e. is lower notch；

4e. is side platform；3b. is helical gear；

81. being cone pinion (81)；

82. being the bevel gear (82) bored with clutch；

83. being the gear case lid (83) of powder metallurgy bevel gear gearbox；

84. being bracing wire torque arm (84)；

85. being small Ao Likang bevel gears (85)；

86. being the gear case lid (86) with the Ao Likang cycloid tooth hypoid gear reduction boxes of inner conical drogue clutch；

87. being the big Ao Likang bevel gears (87) with inner conical drogue clutch；109. bumper.

Specific implementation method

Blade or point of a knife position dress knife blade and be first put into nanoscale printing carbon dust, urea, borax mixing bury soil Middle progress carbon, nitrogen and boron is simultaneously heat-treated with frequency-conversion electromagnetic field permeation.Gear and axis important parts will be handled.

The hay mower of the tool brushless motor multirow star rear axle driving retarder further developed is that the pressure pair such as having Gradual perfection under the pioneer of the straight ripple powder metallurgy lawn machine gear-box of number curve arc wave.

It is that lawn machine is used the straight ripple powder metallurgy lawn machine gear-box of pressure logarithmic curve arc wave, the gear-box such as to have Gear-box, the gear-box its export main shaft be exactly from walking the main rear axle of lawn machine, the shaft end of the pinion gear of the gear-box with Big belt pulley is connected, and the small belt pulley of the big belt pulley and power machine output shaft is connected, referred to as primary transmission；The pinion gear It is engaged with gear wheel, referred to as secondary transmission；In the walking gear and trailing wheel with mono-directional overrun clutch at the main rear axle both ends The transmission of gear, referred to as three-level are driven；The gear wheel is coaxial with the main rear axle and can rotationally be sleeved on the main rear axle On, it is equipped with clutch block in the gear wheel, clutch slider is further sleeved on the main rear axle, the clutch slider is equipped with clutch Structure, containing the sliding slot that can be slided along the main rear axle with pin, the pin is placed in described for the inside of the clutch structure Vertical with the axis of main rear axle in radial hole on main rear axle, one end of the clutch structure is equipped with clutch motion block, with Just operator pull and unclamp lawn machine from handle is walked when driving bracing wire, drawn in bracing wire and the bracing wire of the gear-box Arm, shift fork, tension spring, compression spring, thrust bearing, gasket, rolling bearing, oiliness bearing, the combination of gear case lid and the canine tooth Under the collective effect for the clutch slider being set on the clutch block and the main rear axle being equipped in wheel by the gear wheel with it is described Driving and idle running between main rear axle and implement from walking the walking certainly and from not walking of lawn machine；The axis of the pinion gear is pacified by bearing On the gear case lid (83)；The bearing installation position of the gear case lid (83) is in lawn machine gear-box The side of bearing installation position；Movable bracing wire torque arm (84) is housed in the outside of the gear case lid, the bracing wire is drawn The plate end of arm (84) is equipped with bracing wire side plate, and is equipped at another plate end of the bracing wire torque arm (84) and hangs the small of small returning pull-spring Hole；The bracing wire side plate that the plate end of the bracing wire torque arm (84) is equipped with is equipped with open slot, rolls over, in favor of the steel of bracing wire more Cord pendant enters and is not easy to break off relations, and drives arrangement of clutch clutch convenient for making bracing wire torque arm (84) rotate by bracing wire；It is described Bracing wire torque arm (84) plate in be equipped with slotted hole, to match with shift fork；The upper end short axle of the shift fork also be equipped with double flute and Screw thread is to place torque arm and to be manipulated by bracing wire；The upper shift fork head of the shift fork and set aside plug be it is symmetrical and protrusion , which includes that two of equilibrium dial points；The large bevel gear of the clutch containing inner conical drogue is internally provided with mesoporous and hollows out Taper, so that mesoporous penetrates the rear main shaft of hay mower, the taper convenient for cutting out is adapted to clutch block or waveform block, simultaneously Also its taper hollowed out is convenient for be equipped with the inner wall of dress clutch block；Its taper hollowed out is either equipped with taper or equipped with dress clutch The inner wall of block and multiple kicks；It is equipped with mutually vertical hole on rear main shaft, therefore thick straight pin (76), thin straight pin can be placed (78) and the compression spring is exactly spring (77)；The pinion gear of the gear-box is to increase gear ratio, suitably reduces small bevel gear The number of teeth of wheel；For the number of teeth of the cone pinion within 11 teeth, large bevel gear is 28 teeth；It is first made with CNC or mold work interior Swaging die, then powder is put into pressing formation on press, re-sinters, i.e. the method for powder metallurgy manufactures cone pinion and contains inner cone Cover the large bevel gear of clutch, it is therefore prevented that root is cut；The retarder upper casing (86) of the gear case lid can directly fill；The small bevel gear Wheel Ao Likang pinion gears, large bevel gear Ao Likang gear wheels optimize the engagement of secondary gear spiral bevel gear Parameter and geometrical factor, to constitute cycloid tooth hypoid gear；By steel wire rope and pull rod, make the lawn machine gear-box Also known as the short axle (9c) of the upper and lower side of the lower housing (8c) of the The gear deceleration clutch housing containing multiple parts rotates certain angle Degree, and upper shift fork head (1c) is interlocked by arched arm (3c) and sets aside plug (2c), push sliding pulling sleeve (4c) and pushes clutch Bearing shim (5c) and clutch block are axially moveable, in the rear wheel drive The gear deceleration clutch to engage traverse gear from The clutch gear set is attached together to walk to carry out oneself；The arrangement of clutch clutch speed reducer single side pushing of gear containing hay mower is slided Set, by sliding sleeve (41d), single group of side (42d), inner cone flange (43d) is formed；On the sliding sleeve (41d) of the single side pushing sliding sleeve Equipped with single group of side (42d)；Inner cone flange (43d) is equipped on single group of side (42d) of the single side pushing sliding sleeve；And the list When being equipped with discoid single group on the sliding sleeve (41d) for dialling sliding sleeve (4d) (42d)；The medial surface of inner cone flange (43d) is circular cone Face is not more than 30 degree with axial angle；Since the single side pushing sliding sleeve (4d) is to be set with and slide on main shaft, institute The axis (7d) for the single side pushing sliding sleeve (4d) stated coincides with the main shaft of the arrangement of clutch in hay mower gear clutch speed reducer Line (7d), i.e. self-moving lawn mower rear wheel drive main shaft；The outside of the sliding sleeve (41d) of the single side pushing sliding sleeve (4d) It is movably installed with shift fork；Shift fork can be in contact with single group of side (42d) of the single side pushing sliding sleeve (4d) and stir it, i.e., by institute The inner cone flange (43d) for the single group of side (42d) stated contacts thrust bearing shim, to make arrangement of clutch work；Described is unilateral Single group of side (42d) for dialling sliding sleeve (4d) is in the form of annular discs；The back side of the disk of the single group of side (42d) and the inner cone flange (43d) accessible thrust bearing shim；The upper end short axle of shift fork is additionally provided with double flute and screw thread to place pull rod and to pass through drawing Line manipulates, to make shift fork existing desired group of power be rotated freely in certain angle again；Hay mower gear-box hydraulic fluid port, The hydraulic fluid port that i.e. side of gear reduction unit is placed, the side platform of the lower casing body side surface by being located at rear wheel drive The gear deceleration clutch (4e), the threaded hole (2e) for being located at retarder side and the notch for being located at the lower section of threaded hole and the bottom surface in shell (3e) is formed, and the axis of the threaded hole (2e) is not orthogonal to bottom surface；Do not have to side core-pulling in order to facilitate demoulding, puts The side platform (4e) in spiral shell mosquito hole be with the big arc component in top be connected directly rather than intermediate have indentation；The threaded hole It is therefore to make the outer diameter of threaded line close to bottom inner face as far as possible to be screwed into hydraulic fluid port screw, so as to few retained oil when draining；Oiling fat Very thick li is dragged number very big, though it can use effect should lubricating oil；The lower section for being located at threaded hole and the bottom surface in shell Lower notch (3e) be rectangle, prevent screw from not touching and being arranged；Lawn machine gear-box (76) containing thick straight pin, thin circle Pin (78), spring (77) are also known as compression spring, and both ends are and tight and polish；It is described the straight wave of pressure logarithmic curve arc wave such as to have The small staggered gear of pinion gear Worm type of the gear-box of line remodeling injection molding lawn machine gear-box, the Worm type are small staggeredly The shaft end of gear is connected with big belt pulley, and the small belt pulley of the big belt pulley and power machine output shaft is connected, and is passed for level-one Dynamic, no-load voltage ratio is in 2.1-4；The pinion gear is engaged with gear wheel, referred to as secondary transmission；The gear wheel of the gear-box is interlocked with big Gear is warm extrusion powder metallurgy；The small staggered gear is engaged with the big staggered gear of warm extrusion powder metallurgy, is two level Transmission, no-load voltage ratio is in 5.1-8；Warm extrusion powder metallurgy walking gear and trailing wheel of the main rear axle both ends with mono-directional overrun clutch Plastic annular wheel is driven, and is driven for three-level, no-load voltage ratio is in 2.1-4；The big staggered gear and the main rear axle are coaxial and movable It is sleeved on the main rear axle, the gear of the gear wheel is big staggered gear, is that warm extrusion powder metallurgy fabricates； Clutch block is equipped in the gear wheel, be also cooperation containing etc. in the straight ripple of pressure logarithmic curve arc wave clutch it is big staggeredly Gear, the gear wheel is coaxial with the main rear axle and can rotationally be sleeved on the main rear axle；It is also covered on the main rear axle Equipped with clutch slider, the pressure logarithmic curves such as the clutch slider is equipped with, that is the clutch slider is that the pressure pair such as have The clutch slider of the straight ripple of number curve arc wave, the inside of the clutch structure is containing can be as pin is along the main rear axle sliding Sliding slot, the pin are placed in the radial hole on the main rear axle and, the clutch knot vertical with the axis of main rear axle One end of structure is equipped with clutch motion block, so as to pull and unclamp in operator lawn machine from handle is walked when driving bracing wire, drawing The bracing wire torque arm of line and the gear-box, shift fork, tension spring, compression spring, thrust bearing, gasket, rolling bearing, oiliness bearing, upper tooth Take turns the collective effect of the clutch block being equipped in the combination and the gear wheel of case lid and the clutch slider being set on the main rear axle Under, it carries out secondary transmission and implements to walk lawn machine certainly by driving and idle running between the gear wheel and the main rear axle From walking and from not walking；The feature for the straight ripple remodeling injection molding lawn machine gear-box of pressure logarithmic curve arc wave such as having also exists In, the gear-box be remodeling injection molding babinet, operator do not grab lawn machine from walk handle and when without straining at line, because of compression spring Mounted in the outside of clutch slider, far from gear wheel, rather than between the gear wheel and clutch slider, normality bracing wire when hand pine Pine, and bracing wire torque arm makes shift fork outward under tension spring effect and pushes down compression spring and clutch slider is made to be detached with gear wheel, clutch is slided Block and main rear axle are detached from active force, this is not walk state certainly；When operator finger-tight lawn machine from walking handle and band strains at When line, because compression spring is mounted in the outside of clutch slider, far from gear wheel, rather than between the gear wheel and clutch slider, It is tight that state bracing wire is closed when hand-tight, and bracing wire torque arm keeps shift fork inside under tension spring effect, does not push down compression spring, compression spring effectively pushes clutch Sliding block and so that the clutch block being equipped in clutch slider and gear wheel is engaged, clutch slider and main rear axle relate to active force, to Realize primary transmission, secondary transmission and three-level transmission, this is to walk state certainly；It is described the straight ripple of pressure logarithmic curve arc wave such as to have The clutch block being equipped in the clutch slider and gear wheel of remodeling injection molding lawn machine gear-box, which engages, to be further characterized in that, the clutch The end of sliding block and clutch block is equipped with the clutch cone of the cone of multiple smooth curves connection along end circumference, is slightly in circular cone Shape, the busbar of the curved surface of the circular conical surface of cone are that there is the equiangular spiral of pressure angle properties equivalent everywhere to be also referred to as logarithm spiral shell Line；So the clutch block in the clutch slider and gear wheel is convenient for smooth co-operation by equiangular spiral face；Above-mentioned technical side In case, one section of the main body of the clutch slider is taken,

Establish differential equation d ρ/d θ=k ρ：

It is equal everywhere because wanting pressure angle λ if polar equation ρ=ρ (θ), therefore tg λ=constant, tg λ=k are enabled,

By pressure angle formula tg λ=ρ '/ρ,

Just there is ρ '/ρ=k,

Differential it, just have differential equation d ρ/d θ=k ρ

D ρ/d θ=k ρ are solved, both sides integrate after variables separation：

∫ d ρ/ρ=∫ kd θ are easy to get because of ρ > 0：

Ln ρ=k θ+C,

It is i.e. exponential：

Using PRO/ENGINEER WILDFIRE mapping softwares, working directory is newly set, creates part,

Establish parameter (PARAMETER) 1：C real numbers (real number), default assignment.

Establish parameter (PARAMETER) 2：N integers (integer), default assignment.

Opening relationships (RELATION), i.e. equation of the invention are：

Logarithmic curve：

Z=0

X=10*t

Y=log (10*t+0.0001)

Make logarithmic curve；

Followed by using rotation, merging, the instructions such as hypostazation, and assemble and merges with workpiece, you can model；

It is modeled again with the equation and PRO/ENGINEER WILDFIRE, inputs CNC machining centers, used CIMATRO or MASTCAM, the punching block of warm extrusion powder die-casting processed, or assisted with milling machine, planer and electrical spark working work；Use electrical fire When flower processing, CNC machining centers are inputted with the equation, processes, first to make tungsten copper electrode, then make and first quench Very hard punching block clutch mold core；Big staggered gear is processed, then first to make tungsten copper electrode with gear-hobbing machine, then the tungsten copper electricity rolled out The rotation gear parts of pole, immersing spirit of vinegar makes the small several silks of rotation gear so that precautions averts perils offset follow-up electric machining Cydariform discharge in the gap of tooth root, make warm extrusion powder metallurgical gear punching block with there is the lathe of three-dimensional rotation head；It machines again Workpiece is made in the end of the clutch slider and clutch block along multiple clutch cones for having logatithmic spiral that end circumference is equipped with Arc wave and straight ripple, each clutch cone press four kinds of morphologic arrangements, it is convex to be followed successively by upward slope arc wave (1a1), top arc successively (1a2), the straight ripple of descending (1a3), bottom ripple (1a4), that is to say, that in the clutch slider and clutch block along end circumference The contour curve of the dominant shape state for the multiple clutches cone being equipped with is one section that rough logatithmic spiral is also known as equiangular spiral, then is pressed successively It is carved each part of four kinds of morphologic arrangements；On the logatithmic spiral arc of the upgrade of the upward slope arc wave (1a1) Compactly radial is laterally to be carved with multiple fluctuating great waves lines, also known as arc wave；And it is not carved on the top arc convex (1a2) Line, but to make its push up the convex approximate center of circle of arc by the straight ripple of the descending closer to；Again in the gradient of the straight ripple of the descending (1a3) In more precipitous form it is compactly axial be longitudinal engraving it is more it is straightforward have multiple tendons of fluctuating great waves and multiple grooves, also Referred to as straight ripple；Radially laterally it is carved with a little striped on the bottom ripple (1a4)；The pressure logarithm such as have bent so as to described The mechanism of the clutch of the clutch slider and clutch block of the straight ripple powder metallurgy lawn machine gear-box of bank wave more connects at work The pressure angle of nearly higher mathematics everywhere equal scientific basis and it is more stable and more reliable；It is pushed through polishing and assembling, then with band The warm extrusion powder metallurgy press batch production of the manipulator cooperation of powder；Gear housing remodeling injection-moulded plastic, with nylon double six Add 30% glass to carry out pre-treatment, first shines under fine day sunlight and handled as more praseodymium light, then preliminary drying is no less than in 81-119 degree 31 minutes；Gear housing after injection molding is post-processed, and is no less than 121 minutes in 100-121 degree boilings；Entire assembly is sealed Gear-box sampling be put into the water of upper layer icing no less than 24 hours strength checkings again；The gear wheel of the gear-box is handed over big Side set wheel and clutch slider are to be also known as warm extrusion powder metallurgy pressing with temperature and pressure, and powder used is temperature and pressure powder, the temperature and pressure Small white plate for taking accounts or notes temporary number 7.0g/ccmin-7.6g/ccmin, for temperature and pressure temperature at 99-129 degrees Celsius, the warm extrusion powder metallurgy workpieces pressed are first Immersion oil is pulled out and is drained；It is heat-treated, carbo-nitriding, with methane and ammonia, is being heat-treated 4 hours no more than 899 degree again；It is tempered again Handle 180 degree 90 minutes；Hardness described the straight wave of pressure logarithmic curve arc wave such as should have in Rockwell HRC35-44 degree to meet The small staggered gear of line powder metallurgy lawn machine gear-box and the big staggered gear of warm extrusion powder metallurgy engage and satisfaction described in The clutch of the gear wheel of gear-box big staggered gear and clutch slider；The gear wheel interior energy of the gear-box fills bearing, also can Fill compression spring；The clutch slider is equipped with flange (1a5), is equipped with driver plate after porous (1a6) can be connected with multiple screw rods (1a8) (1a7), the flange (1a5) and it is described after driver plate (1a7) be it is parallel, in favor of insert between into shift fork upper group Plug (1c) and plug (2c) is set aside so that all capable i.e. clutch in left and right can obtain the power of shift fork；The clutch slider it is another Great undertaking is that entirety is equipped with flange (1a5) in the middle and end is equipped with rear driver plate (1a7) behind, is wanted if it is moulding Making Side core pullings could demould, but because being that the bad Side of warm extrusion powder metallurgy takes out, existing to be directly inserted through without Side core pullings but mold, Method it is skilful be the flange (1a5) being equipped in the middle part of it in the clutch slider and the rear driver plate (1a7) that end is equipped with behind It is both conveniently stripped in this way equipped with multiple complementary openings staggeredly, it cannot bilayer processed across the bad Side core pullings of warm extrusion powder metallurgy The difficulty of flange and driver plate, and conveniently insert the upper shift fork head (1c) into shift fork therebetween in the double-deck flange and driver plate and set aside Plug (2c) so that left and right is all capable i.e. from the power that can obtain shift fork with conjunction, fundamentally solves clutch and does not slip up.

The entirety of the clutch slider is equipped with flange (1a5) in the middle and end is equipped with rear driver plate (1a7) behind, and The flange (1a5) that is equipped in the middle part of it in the clutch slider and the rear driver plate (1a7) that end is equipped with behind are equipped with 4 complementations Opening staggeredly, the flange (1a5) and the rear driver plate (1a7) have parallel surface, in favor of being inserted between into shift fork Upper shift fork head (1c) and set aside plug (2c).

The entirety of the clutch slider is equipped with flange (105) in the middle and end is equipped with rear driver plate (1a7) behind, and The flange (1a5) that is equipped in the middle part of it in the clutch slider and the rear driver plate (1a7) that end is equipped with behind are equipped with 2-3 mutually Hand in wrong opening retroactively, mouth side has chamfering, the flange (1a5) and the driver plate (1a7) afterwards to have parallel surface, in favor of the two it It interleaves the upper shift fork head (1c) for being packed into shift fork and sets aside plug (2c).

The entirety of the clutch slider is equipped with flange (1a5) in the middle and end is equipped with rear driver plate (1a7) behind, and The flange (1a5) that is equipped in the middle part of it in the clutch slider and the rear driver plate (1a7) that end is equipped with behind are equipped with 5-24 The opening of complementation staggeredly, mouth Edge Blend angle, the flange (1a5) and the rear driver plate (1a7) have parallel surface, in favor of in the two Between insert the upper shift fork head (1c) into shift fork and set aside plug (2c).

The clutch slider is equipped with flange (1a5), is equipped with 2 holes (1a6), driver plate after capable of being connected with 2 screw rods (1a8) (1a7) so that the flange (1a5) and it is described afterwards driver plate (1a7) it is parallel, in favor of insert between into shift fork upper group Plug (1c) and set aside plug (2c).

The clutch slider is equipped with flange (1a5), is equipped with the holes 3-18 (1a6), after capable of using 3-18 screw rod (1a8) connection Driver plate (1a7) is so that the flange (1a5) is parallel with rear driver plate (1a7), in favor of being inserted between into shift fork Upper shift fork head (1c) and set aside plug (2c).

The clutch slider is equipped with flange (1a5), and being equipped with the holes 3-18 (1a6), it is threaded hole, can use 3-18 screw rod Driver plate (1a7) after (1a8) connection is so that the flange (1a5) is parallel with rear driver plate (1a7), in favor of inserting between It is packed into the upper shift fork head (1c) of shift fork and sets aside plug (2c).

The gear wheel of the gear-box big staggered gear and clutch slider are to be also known as warm extrusion powder metallurgy with temperature and pressure Compacting, powder used is temperature and pressure powder, the temperature and pressure small white plate for taking accounts or notes temporary number SMF5040, is 7.0g/ccmin, temperature and pressure temperature is in 101- 119 degrees Celsius, the warm extrusion powder metallurgy workpieces elder generation immersion oil pressed is pulled out and is drained；It is heat-treated again, methane is used in carbon nitrogen permeation And ammonia, it is being heat-treated 4 hours no more than 818 degree；170 degree of temper 60-100 minutes again.

The gear wheel of the gear-box big staggered gear and clutch slider are to be also known as warm extrusion powder metallurgy with temperature and pressure Compacting, powder used is temperature and pressure powder, and the temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin, temperature and pressure temperature has been pressed at 98 degrees Celsius Warm extrusion powder metallurgy workpieces are submerged initially in transgenic rape, pull out and drain, and place into and vacuumize tank；It is heat-treated again, carbon, nitrogen and boron permeation, 723 degree, 8 hours of iron-carbon alloy theory inflection point.

The end of the clutch slider and clutch block has the clutch of logatithmic spiral to bore along the 3-18 that end circumference is equipped with It is formed with arc wave and straight ripple, each clutch cone presses four kinds of morphologic arrangements successively, is followed successively by upward slope arc wave (1a1), top Arc convex (1a2), the straight ripple of descending (1a3), bottom ripple (1a4), that is to say, that in the clutch slider and clutch block along end The contour curve of the dominant shape state for multiple clutches cone that circumference is equipped with is one section that rough logatithmic spiral is also known as equiangular spiral, then according to Secondary each part by four kinds of morphologic arrangements is carved；In the logatithmic spiral of the upgrade of the upward slope arc wave (1a1) Compactly radial on arc is laterally to be carved at least two fluctuating great waves line, also known as arc wave；And it is convex (1a2) in the top arc On it is not embossed or have at least one；It is compactly axial i.e. vertical in the more precipitous form of the gradient of the straight ripple of the descending (1a3) again 2 tendons and 2 grooves that have fluctuating great waves at least straightforward to engraving, also known as straight ripple；On the bottom ripple (1a4) Radial is laterally to be carved at least one striped；So as to it is described the straight ripple clutch of pressure logarithmic curve arc wave such as have when it is closer The pressure angle of higher mathematics everywhere equal scientific basis and it is more stable and more reliable.

The present invention relates to a kind of for the hay mower that places cut the grass on a lawn beside garden, park and road etc., especially It is the straight ripple powder metallurgy lawn machine gear-box of pressure logarithmic curve arc wave such as to have, great undertaking, which is that clutch slider is whole, to exist Its middle part is equipped with flange (105) and end is equipped with rear driver plate (1a7) behind, because being that the bad Side of warm extrusion powder metallurgy takes out, does Method it is skilful be that the flange (105) being equipped in the middle part of it in the clutch slider and the rear driver plate (1a7) that end is equipped with behind are all provided with There are multiple complementary openings staggeredly, it is both conveniently stripped in this way, it cannot make the double-deck flange and driver plate across warm extrusion powder metallurgy Difficulty, and conveniently inserted therebetween into shift fork in the double-deck flange and driver plate so that left and right is all capable can be obtained from conjunction The power of shift fork fundamentally solves clutch and does not slip up.The end of clutch slider and clutch block is equipped with multiple along end circumference There is the clutch of logatithmic spiral to bore and be formed with arc wave and straight ripple, it is convex that each clutch cone is followed successively by upward slope arc wave (1a1), top arc (1a2), the straight ripple of descending (1a3), bottom ripple (1a4), that is to say, that in the wheel of the dominant shape state of the clutch slider and clutch block Wide curve is one section of logatithmic spiral, closer to the pressure angle of higher mathematics when to there is the straight ripple clutch of logarithmic curve arc wave Everywhere equal scientific basis and it is more stable and more reliable.Exploring warm extrusion powder metallurgically manufacturing method, also there are many innovations.Lawn Grass trimmer gear-box either Plastic or metal class, by limitations such as technology and costs, walk certainly clutch it is unstable and Insecure situation happens occasionally, and solves the problems, such as sporadic not clutch, is always the international hard nut to crack of industry.

Etc. pressure logarithmic curve sound profound, but in its tangible factory be it is common, it is this kind of the pressure logarithmic curve such as to have The punching block core for the pressure logarithmic curves such as many intermediate pincers worker of cam can all be done, and two, work has, the end of clutch slider and clutch block It is formed with arc wave and straight ripple on multiple clutch cones for having logatithmic spiral that circumference is equipped with along end, each clutch cone is followed successively by Slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), bottom ripple (1a4), that is to say, that in the clutch slider Contour curve with the dominant shape state of clutch block is one section of logatithmic spiral, then is produced in batches.It is existing can without Side core pullings but Mold is directly inserted through, method it is skilful be the flange (1a5) being equipped in the middle part of it in the clutch slider and end is equipped with behind Rear driver plate (1a7) be equipped with multiple complementary openings staggeredly, it is both conveniently stripped in this way, across the bad Side of warm extrusion powder metallurgy Core pulling cannot make the difficulty of the double-deck flange and driver plate, but conveniently the double-deck flange and driver plate insert therebetween into shift fork upper group Plug (1c) and set aside plug (2c) so that left and right all it is capable i.e. from close the power that can obtain shift fork, fundamentally solve Clutch is not slipped up, because the power of people plus the shift fork of leverage is more than the power of spring.

Various specific embodiment described in this specification is treasure and the crystallization of domestic and foreign experience, be also for The purpose, feature and effect of this creation is described in detail, for being familiar with people's bodyguard of such skill, according to above-mentioned various explanations, The invention and specific embodiment may be made and some modifications and modification are made in certain parts, essence is without departing from the essence for going out this creation Refreshing scope person should all be included within the scope of the patent protection of the present invention, suitable elder generation Chen Ming.

Hay mower is widely used in being cut not in the way of walk sometimes from walking sometimes by the hobby of people is selected Grass.Operation pedestrian pulls from control crank is walked, and by steel wire rope and driving lever, clutch block is made to be axially displaced to clutch.It is existing The clutch block of arrangement of clutch in the rear wheel drive The gear deceleration clutch of the traverse gear of technology is only to lean on clutch block side Circular cone carrys out clutch, needs larger axially combined power, and the damage phenomenon that internal pressure ring washer is broken is caused to occur frequently；Between circular conical surface Frictional heat is generated in engaging process, needs to add lubricating oil in gear-box；And there is friction to have opposite sliding between circular conical surface, consume work( Rate.It is hay mower gear-box either Plastic or metal class, by limitations such as technology and costs, clutch is walked certainly not Steady and insecure situation happens occasionally, and solves the problems, such as sporadic not clutch, is always the international long-standing of industry Problem.

In order to overcome working condition caused by the clutch in the rear wheel drive retarder of the hay mower prior art Deficiency associate the present inventor and also to invent several different types of hay mower clutches and retarder Once in the external certain devices for being related to manufacture as senior engineer SENIOR ENGINEER such as Switzerland, special kneading is improved, then auxiliary Product can be made to attain a yet higher goal with invention, the present inventor has made a variety of designs and innovation with lifetime domestic and international working experience, just like The perfection that the mankind pursue invention is forever continuous, and just the practical plan of a variety of gradually improve and perfects combines a variety of diagrams below And it is explained in detail.

The power of common hay mower is used from the vertical cutter shaft of the engine in the middle part of hay mower Belt and belt pulley carry out primary transmission, and rotating speed is changed into 1500 turns every point from every point 3000, then carries out secondary transmission and guide to position In the retarder containing clutch of the driving rear axle at hay mower rear portion, the gear ratio of two stage reducer is up to 5, and rotating speed is from every point 1500 are changed into 300 turns every point of driving rear axle, then carry out three-level transmission, by the coaxial driving gear and lawn of driving rear axle Internal gear gear ring in the trailing wheel of grass trimmer is meshed, and because trailing wheel will adjust different mowing heights, therefore the axis of trailing wheel is in adjusting height It is upper and with driving rear axle cannot coaxial but two axis it is parallel, make hay mower it is maximum from speed is walked substantially at one meter per second, To meet customer requirement.

It for energy-saving and emission-reduction, reduces and is harmful to HC hydrocarbon emissions, on the one hand hay mower is to improve engine On the other hand discharge is to use electric energy, low with lithium battery power, normally only several hectowatts, must go to charge each hour；And lawn Grass trimmer makees a few hours with starting the thousands of bricklayers of function；Nevertheless, the hay mower or order of electricity consumption significantly increase, because The target that people pursue environmental protection is firm, pursue the automation of operation and intelligence be it is endless, as a result, Yi Zhongyou Energy-saving circuit control is just come into being conducive to the gardens intelligent grass-removing of noise reduction with four planetary gear rear-guard moving gear box of three-level.

The power of common hay mower is used from the vertical cutter shaft of the engine in the middle part of hay mower Belt and belt pulley carry out primary transmission, and rotating speed is changed into 1500 turns every point from every point 3000, then carries out secondary transmission and guide to position In the retarder containing clutch of the driving rear axle at hay mower rear portion, the gear ratio of two stage reducer is up to 5, and rotating speed is from every point 1500 are changed into 300 turns every point of driving rear axle, then carry out three-level transmission, by the coaxial driving gear and lawn of driving rear axle Internal gear gear ring in the trailing wheel of grass trimmer is meshed, and because trailing wheel will adjust different mowing heights, therefore the axis of trailing wheel is in adjusting height It is upper and with driving rear axle cannot coaxial but two axis it is parallel, make hay mower it is maximum from walk speed substantially at one meter per second completely Sufficient customer requirement；But technical barrier is that electricity consumption is limited by power supply on hay mower, motor is according to there is brush Series-wound motor then has brush big to radio interference.Lithium battery group charging source is used on hay mower, motor is then It is to have certain improvement using brushless motor；But to pursue small size height output, the rotating speed of brushless motor is up to every point More than 20000 turns, be greatly more than ten times, this allows for electronic subtract relative to 1500 turns of every point of the initial speed of original retarder The difficulty of fast device greatly increases, and to reducing cost, reduces noise, presses low-temperature-rise, increase no-load voltage ratio and be proposed very high requirement.

Cutter blade for mowing machine and reducer gear and the processing of the carbon, nitrogen and boron of air-cooled inner shaft, gear shaft are the tubuloses of sky, Inside is logical so that outer blowing air cools down；The harmonic gear flexbile gear driven rear axle drives retarder, with turning for brushless motor 20000 turns every point of speed, 250 watts of power, 5 millimeters 36 volts, output of shaft diameter；The number of teeth 18 of motor driving gear (88)；The electricity The motor gear of the number of teeth 18 of owner's moving gear (88) and three each numbers of teeth 18, the not only rotation of modulus 0.6 but also around along horse Up to axis public axis revolve round the sun planetary gear (98) engagement, the planetary gear be attached separately to respectively and it is equidistant with public axis Planet carrier (97) three planet wheel spindles on；The motor gear of the number of teeth 18 is steel 40Cr；The planetary gear (98) Three planetary gears be polyformaldehyde；It is engaged with planetary gear and the internal gear of the centre wheel of the fixed planetary system of geometrical axis (99) it is steel 40Cr, modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is NGW types, and N is internal messing tooth Wheel, G is the composite gear among two gear Meshing Pairs, and W is external gear pump；The transmission ratio of the Planetary Gear Transmission is 1+ 60/18 is 4.3, meets transmission ratio recommendation 2.7 to 9, and transmission efficiency is percent 97-99；The public axis of the planet carrier (97) Line center projecting shaft is formed by fan groove equipped with symmetrical two sectors, so as to the planet carrier with motor coaxle Symmetrical two sectors that the public axis centre projecting shaft of output gear (96) is equipped be formed by it is fan-shaped it is convex come interworking insert Merge and be inserted into the inner ring of big bearing (105), the number of teeth of the planet carrier output gear (96) be 26, modulus be 1.5, Reference circle is 26x01.5=39；The tooth of the planet carrier output gear (96) and 2812 Double-gears (104) on the first jackshaft It is 1.5, reference circle is that 28 gears of 28x01.5=42 are meshed that number, which is 28, modulus, 28 gears on first jackshaft The number of teeth of (104a) and the planet carrier output gear (96) is in first between the 26 planet carrier output gear (96) It is 1.077 that countershaft transmission ratio, which is 28/26,；2812 Double-gear (104) is containing 28 gears (104a) of the 28 coaxial numbers of teeth and 12 The both ends of 12 gears (104c) of the number of teeth, 2812 Double-gear (104) are respectively provided with small bearing (103), the small bearing (103) Outer diameter be 14mm, so as to the inner hole at the both ends with 2812 Double-gear (104), the internal diameter of the small bearing (103) Be 5 so as to the first jackshaft activity assemble；Identical 2812 Double-gear (104) of another structure is also containing coaxial 28 gears (104a) of 28 numbers of teeth and 12 gears (104c) of 12 numbers of teeth, on the second jackshaft, 2812 Double-gear (104) both ends are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to 2812 Double-gear (104) inner hole at both ends, the internal diameter of the small bearing (103) are 5 to be assembled with the second jackshaft activity；Institute State 12 gears of 12 numbers of teeth of coaxial 28 gears (104a) in 28 numbers of teeth of 2812 Double-gears (104) on the first jackshaft (104c) described 2812 Double-gear (104) identical with another structure on second jackshaft is also containing coaxial 28 28 gears (104a) of the number of teeth are meshed, on 28 gears (104a) on second jackshaft and first jackshaft It is 2.33 that the second axis transmission ratio between 12 gears (104c) of 12 numbers of teeth of 2812 Double-gears (104), which is 28/12,；Described 2812 12 gears (104c) of 28 gears (104a) and 12 numbers of teeth of the Double-gear (104) containing the 28 coaxial numbers of teeth are being molded with polyformaldehyde Machine-shaping in mold；The rear axle output par, c of the retarder is containing coaxial half rear axle of length and short half rear axle, the length Rear axle driving reducing gearbox oil sealing is sequentially arranged on half rear axle, peace closes elastic clip (92), iron washer, safety clutch cone (90), hangs Shelves disk (101) closes to hang containing peace and presss from both sides axis in link stopper (91a) rear axle driving gear (91), long axis, and half rear axle of the length is equipped with radial Cross-drilled hole is connected with will pass through lateral pin nail with safety clutch cone (90), peace conjunction elastic clip (92) sandwich the safety from Cone (90) and the extension shelves disk (101) are closed, the safety clutch cone (90) and the extension shelves disk (101) hang shelves with described closed containing peace Block (91a) rear axle driving gear (91) is connected, and one end of half rear axle of the length is equipped with axial deep hole, to be inserted into the long axis Axis is pressed from both sides, is inserted into the axial deep hole that one end of short half rear axle is equipped with and makes half rear axle of the length and the short half rear axle activity It is connected；It is sequentially arranged with rear axle driving retarder upper cover and oil sealing on short half rear axle, is also filled with another set of peace conjunction bullet successively Property folder (92), iron washer, safety clutch cone (90), hang shelves disk (101), also be provided with radial cross-drilled hole to lead on short half rear axle It crosses lateral pin nail to be connected with another set of safety clutch cone (90), another set of peace conjunction elastic clip (92) sandwiches described Safety clutch bores (90) and the extension shelves disk (101), the safety clutch cone (90) on short half rear axle and the extension shelves Disk (101) also hangs link stopper (91a) rear axle driving gear (91) with unique conjunction containing peace above-mentioned and is connected；Described closed containing peace is hung The number of teeth of link stopper (91a) rear axle driving gear (91) is 33 teeth and modulus is 2.5；28 gears on second jackshaft 12 gears (104c) of 12 numbers of teeth of (104a) hang link stopper (91a) rear axle with the conjunction containing peace on the rear axle and drive gear (91) it is 2.75 that the transfer rear axle transmission ratio between, which is 33/12,；Retarder resultant gear ratio is 4.3x33/12x28/12x28/26= 4.3x6.9=30 again, sharing；It is characterized in that, the other end of the other end of half rear axle of the length and short half rear axle is each Equipped with laterally double groovings and lateral double groovings with civilian dress rear wheel drive gear, the rear wheel drive gear is 14 tooth modules 2.5, and With trailing wheel gear ring (107) of the rear wheel drive cartridge driving gear in hay mower trailing wheel, the trailing wheel gear ring (107) The number of teeth is that 52 tooth modules 2.5 match small grass trimmer trailing wheel.

It is not at all easy to have innovated a kind of use not only having reached no-load voltage ratio but also meet heat dissipation in order to save planet carrier and planet internal-gear The gardens machine of the air-cooled no planet rear axle driving retarder of electric gear inner shaft, drives retarder, from gear containing no planet rear axle Axis is empty tubulose, and inside is logical so as to the cooling of outer blowing air, and gear is herringbone bear, usefulness do not say and Analogy.

The gardens machine of the air-cooled no planet rear axle driving retarder of electric gear inner shaft, is empty tubulose from gear shaft；Nothing 250 watts of 20000 turns of every point of rotating speed, the power of brush motor, 5 millimeters 36 volts, output of shaft diameter；The number of teeth of motor driving gear (88) 18, modulus 0.6, reference circle are 18x0.6=10.8；Remove planetary gear train, motor motor driving gear (88) and newly set Motor on driven shaft is engaged from gear (106), the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle are 38x0.6=22.8, motor driven ratio is 38/18；The motor matches out of gear with 14x5 bearings；The motor newly set Equipped with from tooth sleeve (100) and female connector gear (102) on driven shaft, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, the female connector gear is 28, modulus with the number of teeth as 2812 Double-gears (104) on output gear and the first jackshaft Be 1.5, reference circle it is that 28 gears of 28x01.5=42 are meshed, the output gear and first of the motor driven axis newly set Jackshaft transmission ratio is 28/12；The above transmission ratio is 38/18x28/12=4.9, is more than planet no-load voltage ratio 4.33, actually shares；Its Remaining no-load voltage ratio is roughly the same；2812 Double-gear (104) is containing 28 gears (104a) of the 28 coaxial numbers of teeth and 12 teeth of 12 numbers of teeth It takes turns (104c), the both ends of 2812 Double-gear (104) are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to the inner hole at the both ends with 2812 Double-gear (104), the internal diameter of the small bearing (103) be 5 so as to The first jackshaft activity assembly；Identical 2812 Double-gear (104) of another structure is also containing the 28 coaxial numbers of teeth 12 gears (104c) of 28 gears (104a) and 12 numbers of teeth, on the second jackshaft, the both ends of 2812 Double-gear (104) It is respectively provided with small bearing (103), the outer diameter of the small bearing (103) is 14mm, so as to the both ends with 2812 Double-gear (104) Inner hole, the internal diameter of the small bearing (103) is 5 to be assembled with the second jackshaft activity；Among described first 12 gears (104c) of 12 numbers of teeth of coaxial 28 gears (104a) in 28 numbers of teeth of 2812 Double-gears (104) on axis with it is described 28 gears of identical 2812 Double-gear (104) of another structure also containing the 28 coaxial numbers of teeth on second jackshaft (104a) is meshed, 28 gears (104a) on second jackshaft and 2812 Double-gears on first jackshaft (104) it is 2.33 that the second axis transmission ratio between 12 gears (104c) of 12 numbers of teeth, which is 28/12,；2812 Double-gear (104) 28 gears (104a) containing the 28 coaxial numbers of teeth and 12 gears (104c) of 12 numbers of teeth are to use polyformaldehyde in injection mold Machine-shaping；The rear axle output par, c of the retarder is containing coaxial half rear axle of length and short half rear axle, half rear axle of the length On be sequentially arranged with rear axle driving reducing gearbox oil sealing, peace closes elastic clip (92), iron washer, safety clutch cone (90), hangs shelves disk (101), contain and press from both sides axis in peace conjunction extension link stopper (91a) rear axle driving gear (91), long axis, half rear axle of the length is equipped with radial cross-drilled hole It is connected with safety clutch cone (90) with will pass through lateral pin nail, the peace closes elastic clip (92) and sandwiches the safety clutch cone (90) and the extension shelves disk (101), the safety clutch cone (90) and the extension shelves disk (101) hang link stopper with described closed containing peace (91a) rear axle driving gear (91) is connected, and one end of half rear axle of the length is equipped with axial deep hole, is pressed from both sides to be inserted into the long axis Axis is inserted into the axial deep hole that one end of short half rear axle is equipped with and makes half rear axle of the length and the short half rear axle activity phase Connection；It is sequentially arranged with rear axle driving retarder upper cover and oil sealing on short half rear axle, is also filled with another set of peace conjunction elasticity successively It presss from both sides (92), iron washer, safety clutch cone (90), hang shelves disk (101), radial cross-drilled hole also is provided with will pass through on short half rear axle Lateral pin is followed closely to be connected with another set of safety clutch cone (90), and the another set of peace closes elastic clip (92) and sandwiches the peace (90) and the extension shelves disk (101) are bored in full clutch, the safety clutch cone (90) on short half rear axle and the extension shelves disk (101) also link stopper (91a) rear axle driving gear (91) is hung with unique conjunction containing peace above-mentioned to be connected；Described closed containing peace hangs shelves The number of teeth of block (91a) rear axle driving gear (91) is 33 teeth and modulus is 2.5；28 gears (104a) on second jackshaft 12 numbers of teeth 12 gears (104c) and the rear axle on it is described closed containing peace hang link stopper (91a) rear axle driving gear (91) between Transfer rear axle transmission ratio be 33/12 be 2.75；Retarder resultant gear ratio is 4.3x33/12x28/12x28/26=4.3x6.9 It=30 times, shares；It is characterized in that, the number of teeth 18 of the motor driving gear (88), modulus 0.6, reference circle are 18x0.6= 10.8 metal gear, so as to general；Remove planetary gear train, the motor driving gear (88) on the motor driven axis newly set Motor engaged from gear (106), the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle are 38x0.6= 22.8 metal gear, motor driven ratio is 38/18；The motor matches out of gear with 14x5 bearings；The motor is from tooth The sipes hole (106a) of the uniformly distributed quartering is equipped in wheel to be inserted into from the four wide pawl of tooth sleeve (100) to allow, the motor from The narrow slot hole (106c) that the uniformly distributed quartering is equipped in gear is inserted into allow from four fan pawls of tooth sleeve (100), and described four A fan pawl is conducive to radiate；The other end from tooth sleeve (100) set there are four pusher dog so as to the motor newly set The female connector gear (102) being equipped on driven shaft is mutually formulated, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, The small bearing (103) is equipped in the female connector gear (102), it is interior to be inserted into the motor driven axis newly set；It is described from tooth sleeve (100) outside is equipped with big bearing, and the big bearing is located on reducing gearbox；It is equipped with from tooth on the motor driven axis newly set Sleeve (100) and female connector gear (102), the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, half rear axle of the length The other end and short half rear axle the other end be respectively provided with laterally double groovings and laterally double groovings with civilian dress rear wheel drive tooth Wheel, the rear wheel drive gear are 14 tooth modules 2.5, are used in combination the rear wheel drive cartridge driving gear in hay mower trailing wheel Trailing wheel gear ring (107), the number of teeth of the trailing wheel gear ring (107) is that 82 tooth modules 2.5 match big grass trimmer trailing wheel；It is described from tooth set The exits the impeller Ye Dao blade angle of the fan of each fan pawl of cylinder (100) is more than 90 degree, is the impeller of Forword vane Fan；

The motor of retarder is equipped with circuit for controlling motor；Motor control part principle：

Integrated chip control program, the decoding of built-in chip type rotor-position are purchased in this system Brush-Less DC motor control part Device monitors three motor position sensors, to provide the correct sequential on top, lower part power MOS drivings, there is six step of all-wave to drive Dynamic function, peripheral three-phase drive device are integrated metal-oxide-semiconductor, and upper power switch is PMOS tube, and lower part power switch is NMOS tube, It is current of electric sampling resistor that integrated chip, which has overcurrent protection function, R118 resistance, and current sampling signal is by R117, R119 points Chip current sampling end is sent to after pressure, when current sampling signal value is more than 0.1V, overcurrent protection function activation, motor stops turning Dynamic, overcurrent protection set-point is：

Icurrent=0.1* (R117+R119)/(R118*R119)

When overcurrent events occur, the output of driving chip Fault Output pins is low level, and motor is driven and is believed Number OutputEnable signals drag down, and motor shuts down, and avoid machine loading electric current excessive and electronic device damage occurs, when When Fault Output are low level, the B-E terminal voltages of triode Q24 are also reduced to zero, and cut-off state is switched to by conducting state, BLADE_FAULT signals are that high level stops all motor operations immediately after MCU receives BLADE_FAULT high level；It removes Outside this this, MCU is additionally provided with two level software overcurrent protection function, so as under different load conditions, flexible handling machine operation Action, avoids machine frequent shutdown,

Software overcurrent protection function can be described as follows：

Current of electric sampled signal BLADE_P8, after 7.8 times of operational amplifier operation amplifier, by amplified sampling Current analog signal BLADE_CRT signals are given on pins of the MCU with analog-digital conversion function, by built-in analog-to-digital conversion list After member processing, analog current signal is converted to 12 digital current signals, the overcurrent threshold signal phase that this signal is arranged with MCU Compare, when current signal value is more than overcurrent threshold value, executes run action when corresponding overcurrent, left and right movable motor has Identical overcurrent protection function,

Current operator amplifying circuit：

Current amplification factor Counting Formula：

A=1+ (R7/R14) * Icurrent

It is promoted when occurring unusual condition such as machine collision, machine in motor operation course, when machine is overturn, these things occurs Coherent signal is fed back to MCU by the perceptron of part, and MCU is immediately performed brake function,

Specific action process is as follows：

When location bias occurs for the Hall sensor for detecting the above event, hall signal is switched to low electricity by high level Flat, MCU pin is detected to level change, and the BLADE_BRK signals sent out are switched to low level by high level, and process is below After negative circuit processing, generates BLADE_P4 high level signals and give motor drive ic U13, actuating motor brake function left and right Movable motor function having the same；

Driving chip also have make motor forward/reverse function, when machine operation in collide event when, machine execute after Function is moved back, specific action description is as follows：

When collision alarm is sent to MCU by Hall sensor, MCU will control the BLADE_DIR's in motor operation direction Signal is switched to high level by low level, after the processing of following negative circuit, generates low level BLADE_P7 signals to electricity Machine driving chip U13, motor switch inverted status by rotating forward, and machine executes fall back action, and left and right movable motor has phase Same function；

Motor speed control principle：

Under different working conditions, motor operation speed also differs machine, it is therefore desirable to feed back the operation speed of motor It spends signal and drives core U13 to motor, this system design uses dedicated motor speed detection chip, to generate motor speed control Required feedback voltage, without expensive tachometer, U12, you can realize this function；

Concrete operating principle is as described below：

Be motor driven chip U13 as electronics rotor position decoding Hall sensor output signal occur it is positive or negative Saltus step can make U12 generate the pulse of an amplitude and duration, and parameter is determined by non-essential resistance R101, C48, in U12 Pin 5 at output pulse by U13 error amplifier integrate, to generate a DC level, the level and motor speed Directly proportional, this velocity feedback voltage establishes PWM datums at the pin 13 of U13, and is closed into feedback control loop, output driving The control signal of MOS, meanwhile, the PWM reference voltages at U13 pins 13, which are fed back to MCU, has the pin of analog-digital conversion function, So that MCU learns motor actual motion speed, and control voltage is adjusted according to the difference of actual motion velocity amplitude and setting value；

Interlock circuit is described as follows：

RMOT_DAC is that the target velocity of MCU outputs controls the voltage value, (amplification factor=1+ after operational amplifier amplifies R5/R12), send to the pin 11 of right movable motor driving chip, draw target velocity voltage and the difference of actual speed voltage passes through After the amplification of chip interior error amplifier, the reference voltage signal RMOT_P6 that above-mentioned PWM is adjusted is exported at pin 13.

Benefit：Cutter blade for mowing machine and reducer gear and the processing of the carbon, nitrogen and boron of air-cooled inner shaft, gear shaft are the pipes of sky Shape, inside is logical so that outer blowing air cools down；The harmonic gear flexbile gear driven rear axle drives retarder, uses brushless motor 20000 turns of rotating speed, 250 watts of power, 5 millimeters 36 volts, output of shaft diameter；The number of teeth 18 of motor driving gear (88), modulus 0.6, Reference circle is 10.8；The motor gear and three each numbers of teeth 18, moduluses of the number of teeth 18 of the motor driving gear (88) 0.6 not only rotation but also be 4.3x33/12x28/12x28/26=4.3x6.9=around the public retarder resultant gear ratio along motor axis It 30 times, shares；The other end of the other end of half rear axle of the length and short half rear axle is respectively provided with laterally double groovings and transverse direction Double groovings are 14 tooth modules 2.5 with civilian dress rear wheel drive gear, the rear wheel drive gear, and the rear wheel drive gear is used in combination to drive The number of teeth of the dynamic trailing wheel gear ring (107) in hay mower trailing wheel, the trailing wheel gear ring (107) is that 82 tooth modules 2.5 are matched Big grass trimmer trailing wheel.

Hay mower drives retarder with rear axle, because of the low ground potential positioned at only 25 millimeters of liftoff level ground, by price limit and by narrow Narrow limitation, so no-load voltage ratio is difficult to do greatly, trailing wheel has been finalized, modulus is big to be can not load, and modulus is small and grinds away quickly, object It is U.S. inexpensive, energy conservation and environmental protection is also wanted, it is always a hard nut to crack to be driven on retarder in hay mower rear axle, with electronic humorous It is the tubulose of sky that wave gear flexbile gear driven rear axle, which drives the garden equipment of retarder, gear shaft, and inside is logical so as to outer Blowing air cools down；The garden equipment of the harmonic gear flexbile gear driven rear axle driving retarder, axis jackshaft is pipe with cold But, flexbile gear is conducive to noise reduction.

Gardens machine drives retarder with electronic crossed helical gears without planet rear axle, and gear shaft is the tubulose of sky, interior Portion is logical so that outer blowing air cools down；Using brushless motor, from the impeller leaf of the fan of each fan pawl of tooth sleeve (100) Road exit blade angle is more than 90 degree, is the fan of the impeller of Forword vane.Axis in gear is empty with cooling；Rear axle It is always a hard nut to crack to drive the gardens machine of retarder to be driven on retarder in hay mower rear axle, with electronic harmonic wave It is the tubulose of sky that gear flexbile gear driven rear axle, which drives the garden equipment of retarder, gear shaft, and inside is logical so as to outer logical Air cooling；Gardens machine is conducive to utilize former widely used friendship without planet rear axle driving retarder with electronic crossed helical gears Wrong axis helical teeth wheel-speed regulating change box, only the former engine belt pulley of importation remove and be changed to motor and gear come power Remove driving crossed helical gears and rear axle；Because be staggered gear, therefore the installation site of motor and direction are with outside new babinet Shell.

Bright spot is：

Gardens machine drives retarder with electronic crossed helical gears without planet rear axle, removes planetary system and is passed with staggered gear Dynamic, the conjunction containing peace on rear axle hangs link stopper (91a) rear axle driving gear (91) and uses staggeredly helical gear instead, and helix angle is 27 Degree；12 gears (104c) of 28 gears (104a) on second jackshaft use screw rod instead, on the rear axle described in change It is 5 with the transfer rear axle third transmission ratio between staggeredly helical gear；So resultant gear ratio is 5x28/26x28/12x28/12= 30, it shares just；The other end of the other end of half rear axle of the length and short half rear axle is respectively provided with laterally double groovings and cross To double groovings with civilian dress rear wheel drive gear, the rear wheel drive gear is 14 tooth modules 2.5, and the rear wheel drive gear is used in combination The number of teeth of trailing wheel gear ring (107) of the driving in hay mower trailing wheel, the trailing wheel gear ring (107) is 52 tooth modules 2.5 With small grass trimmer trailing wheel.Be conducive to set using a large amount of parts and lathe of former widely used crossed helical gears gearbox It is standby.

Gardens intelligent grass-removing four planetary gear rear-guard moving gear box of three-level, which is characterized in that it is hay mower With four planetary gear meshing gear reduction box (108) of three-level, brushless motor, 20000 turns of rotating speed, 150 watts of power, 36 are used 5 millimeters volt, output of shaft diameter, there is speed control circuit；The number of teeth of motor driving gear (88) is 20；The motor driving gear (88) motor gear of the number of teeth 20 is engaged with four planetary gears (98) on the first order planet carrier of third-level planetary system Transmission, the gear use helical gear, and helix angle is 12.7 degree；Both rotations of four each numbers of teeth 19, modulus 0.6 Again around the planetary gear (98) of the public axis revolution along motor axis, be attached separately to respectively and the planet carrier equidistant with public axis (97) on four planet wheel spindles；The motor gear of the number of teeth 20 is steel 40Cr；Four rows of the planetary gear (98) Star-wheel is polyformaldehyde SP500；It is engaged with planetary gear and the internal gear of the centre wheel of the fixed planetary system of geometrical axis (99) It is steel 40Cr, modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is NGW types, and N is inside engaged gear, and G is Composite gear among two gear Meshing Pairs, W are external gear pumps；The transmission ratio of the Planetary Gear Transmission is 1+60/20 It is 4, meets transmission ratio recommendation 2.7 to 9, transmission efficiency is percent 97-99；Center output on the first order planet carrier Gear uses helical gear, helix angle with four planetary gears (98) engaged transmission on the planet carrier of the second level, the gear It is 12.7 degree, four each numbers of teeth 19 of the second level, the not only rotation of modulus 0.6 but also the row to revolve round the sun around the public axis along motor axis Star gear (98), be attached separately to respectively and on four planet wheel spindles of the planet carrier (97) equidistant with public axis；Described first Center output gear on grade planet carrier is steel 40Cr, four rows of four planetary gears (98) on the planet carrier of the second level Star-wheel is polyformaldehyde SP500；It is engaged with planetary gear and the internal gear of the centre wheel of the fixed planetary system of geometrical axis (99) It is steel 40Cr, modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is also NGW types, and N is inside engaged gear, G It is the composite gear among two gear Meshing Pairs, W is external gear pump；The transmission ratio of the Planetary Gear Transmission of the second level Be 1+60/19 be 3.16；Center output gear on the second level planet carrier and three planet teeth on third level planet carrier (98) engaged transmission is taken turns, the gear uses helical gear, and helix angle is 12.7 degree, three each numbers of teeth 18 of the third level, The not only rotation of modulus 0.6 but around along motor axis public axis revolution planetary gear (98), be attached separately to respectively and with public affairs On three planet wheel spindles of the equidistant planet carrier of axis (97)；Center output gear on the second level planet carrier is steel 40Cr , three planetary gears of the number of teeth 18, modulus 0.6, three planetary gears (98) on the planet carrier of the third level are not polyformaldehyde SP500's but steel 40Cr；It is engaged with planetary gear and the internal gear of the centre wheel of the fixed planetary system of geometrical axis (99) is Steel 40Cr's, modulus is 0.6, and the number of teeth is 60, and the classification of the Planetary Gear Transmission is also NGW types, and N is inside engaged gear, and G is Composite gear among two gear Meshing Pairs, W are external gear pumps；The transmission ratio of the Planetary Gear Transmission of the third level is 1+60/18 is 4.33；Above three-level resultant gear ratio is 4x3.16x4.33=55 times, and 20000 turns/55=360 of rotating speed is furnished with Speed control circuit shares；More reasonable distribution torsional moments at different levels, the small position plastic gear of power, the big position steel-tooth of power Wheel especially uses helical gear, and meshing characteristic is self-evident.

A kind of hay mower dallies monolithic hay knife after being contracted with safe overload, which is characterized in that it contains blade and deceleration The gear of device and noise elimination inner shaft is increased because wearing big, temperature, rotating speed is high, noise is big, protection must be handled due to be difficult to ensure longtime running after Processing, the gear shaft of retarder are tubuloses, retarder from gear drive inner shaft containing noise elimination (100a), so as to cooling of eliminating the noise； Retarder is with the air-cooled no planet rear axle driving retarder of electric gear inner shaft, and new be equipped with from gear shaft in the side containing motor is empty Tubulose, described be logical, one end of one end three-way motor, the inner via hole of one end inside gear shaft energy high speed rotation Gas lead to one end up to ten thousand for turning high-speed electric expreess locomotive, the external energy of one end is rotatably provided with bearing and from tooth sleeve, described from tooth Wheel shaft includes the noise elimination inner shaft, and the inner via hole that the noise elimination inner shaft its other end is included from gear shaft leads to retarder Outside is equipped with the noise elimination wedge of multiple hexagonal pyramid shapes, the noise elimination in the noise elimination inner shaft from contained by gear shaft The noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of the inner shaft of one end of the close motor of inner shaft is equipped with is intensive, institute It is dilute to state the noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of the inner shaft of one end of the separate motor of noise elimination inner shaft is equipped with Thin, the middle part of the noise elimination inner shaft is equipped with isolation interconnecting piece so that one end connects the close motor of the slave gear shaft One end of the separate motor of one end and its other end connection slave gear shaft, to refer to Lighthill parameter and Richards The air-flow that the motor of the turbulence noise of noise comes, the port in one end close to motor is compressed, and reflation enters from gear shaft, Multiple hexagonal pyramids that the hollow pipe of the inner shaft of one end of close motor of the air-flow of reflation through the noise elimination inner shaft is equipped with The intensive noise elimination wedge recompression of shape and again by the one of the separate motor of noise elimination inner shaft after slightly being run by noise elimination inner shaft Second compression is then spilt into the sparse noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of the inner shaft at end is equipped with again again The inner via hole that the slave gear shaft includes the noise elimination inner shaft its other end leads to the outside of retarder, is recompressed with compression-expansion Reflation and the process for carrying out noise elimination noise reduction；Also it is convenient for outer blowing air to cool down；Blade and reducer gear and the protection of noise elimination inner shaft It is mostly metal parts to post-process its gear and noise elimination inner shaft containing blade and retarder, using kelvin effect, workpiece is embedded in dilute It in soil, is post-processed with high-frequency current, special efficacy is self-evident.Workpiece also can be used titanizing aluminium and add rhenium, be placed on oxygen-containing Change yttrium, rare earth, indium, clay forming ceramic in, be equipped with same position width penetrate and laser scanning and manufacture.Blade also can be used in point of a knife Position fills knife blade.Or carbon fiber 3 D-printing also can be used in blade, then is put the first edge on a knife or a pair of scissors with diamond tool, place into printing carbon dust, The mixing of urea, borax buries in soil heat treatment and with frequency-conversion electromagnetic field and laser scanning and with platinum rhodium catalysis, makes its space lattice Dot matrix disperse；Blade or point of a knife position dress knife blade and be first put into nanoscale printing carbon dust, urea, borax mixing bury soil Middle progress carbon, nitrogen and boron is simultaneously heat-treated with frequency-conversion electromagnetic field permeation；Blade fills knife blade at point of a knife position and is first put into nanoscale The mixing of printing carbon dust, urea, borax, which is buried, to be carried out carbon, nitrogen and boron and is heat-treated with frequency-conversion electromagnetic field permeation in soil；It is characterized in that, The mower blade is multiple tooth hay knife, and the cross section of the apical tooth (25) of the multiple tooth hay knife is equipped with to be stretched with steel plate punched The steel plate of the back of a bow gone out, hunchbacked both sides has certain angle, and the bottom of the back of a bow is polished to be formed and grinds cutting edge (20), described The side of tooth is the arc containing equiangular spiral, equiangular spiral be logatithmic spiral its with pressure angle equal characteristic everywhere；It is used The upper die forming block (25a) and lower die forming blocks (25b) of steel plate punched stretching die are multiple equidistant or isogonism briquettings, steel used Plate is first annealed to quench again；It is polygonal pyramid shape that the mower blade, which sets wind wing honeycomb (29), and it is ellipse that middle part, which is equipped with through-hole (30), It is circular；The blade of the mower blade sets graphene plating indium；The blade of the mower blade is handled with laser quenching；Institute It states the crest line of polygonal pyramid shape of wind wing honeycomb and the angle of bottom surface is greater than 115 degree of infiltrations and climbs angle θ；Match on the mower blade Siphon pipe is set, to reinforce cooling and lubricating and the comprehensive effect to grass.

Siphon pipe is configured on the mower blade, not only reinforces cooling and lubricating and the comprehensive effect to grass, Er Qieyou Promote the conversion of plant cell membrane channels to absorb the complementary effect for making careless fine and smooth growth, and make to eat cell membrane channels conversion it is fine and smooth at The more digestible high-end nutrient absorption effect of the stomach of the animal of long plant.Through blade and pipe combination of siphon fist to the grass of plant Effect, make ejection gas and liquid mixing mist in contain subset polymers, so as to human body and plant absorption；The mankind send out A kind of existing transformation way is known as cell membrane channels, and there is a series of city gate of mass exchanges in cell membrane, a kind of city gate is only A certain molecule is allowed to come in and go out, people are referred to as cell membrane channels；The structure of matter of cell membrane aquaporin matter only allows water Molecule passes through, and has highly important effect, for example crucial filtration, aquaporin egg are just played in the kidney of people White epicyte protein is exactly aquaporin, and the composition of these substances is referred to as cell membrane aquaporin；The water of macromolecular mass structure is It is difficult into active somatic cell, only the small-micelle water of those short chain structures with similar liquid crystal, is just easier to enter Into the cell, life metabolic activity is participated in, and various ions are taken to ion channel in cell membrane and are entered into the cell；Pollution causes The water of degeneration, water clusters cohesion become larger, and therefore, active somatic cell is difficult to absorb；Water is not absorbed by cell, cannot be participated in A series of vital metabolic activities of live body；In addition, water clusters are small, activity is just big, and this water is all right to be drunk, and plant is also just more advantageous to The refinement growth of the grass of object, to also be conducive to eat the health status for the animals and humans for refining growing plants；And water clusters Bigger activity is smaller, also just bad to drink；Also difficult to be absorbed by cell；It is higher-order of oscillation process to cut and beat；In same liquid, Flow velocity is big, and pressure is small；Flow velocity is small, and pressure is big, and fluid can flow to low pressure from high pressure automatically, multiple tooth when by the siphon pipe The through-hole of polygonal pyramid shape and ellipse together with wind wing honeycomb, to more in mowing chassis with repeatedly extruding chopping grass containing dew Secondary puddling is just discharged into grass trimmer rear grass outlet mouth and is extruded into grass cutting collection box again, is that there are atomization process；Blade it is multiple tooth together with wind wing Many wedges of the volume change in oscillation of the turn-around chamber of the cavity of the polygonal pyramid shape of honeycomb, the polygonal pyramid shape filtered into noise reduction have It plays vacuolar membrane and forms mist from the noise reduction process then expanded and filtering and bubbling process is first compressed；Local acceleration and fluid Point unsteady motion causes unstable field and migration acceleration and change in location to cause uneven flow field, forms pulsation turbulent flow, Gradient and divergence and curl by mixed fluid are further change in and disperse and mix broken grass in spray form and wave in the wind undiscipline and open Come, the subset of formation leaves cutaway portion the stimulation that the grass of the plant of regrowth has had；First compress reflation And it refines and is atomized the subset escaped again and be mixed into the booster action that broken grass has also had nursing.

The beneficial effects of the invention are as follows：The multiple tooth length that blade is considerably increased than straight knife, there are more folding swords and there are many Impact cutting angle and slip cutting angle；Material to be cut is flexible, and when single-blade makes careless phenomenon more, and rolls over sword more then to hug careless function stronger, favorably Structure is ground in the hunchbacked formula bottom of enhancing cutting straw and straw efficiency, shear blade, so that it is had wearability and saves power consumption, it is described The side of tooth be the arc containing equiangular spiral, equiangular spiral be logatithmic spiral its with pressure angle, equal characteristic is conducive to everywhere Cutting；The upper die forming block (25a) and lower die forming blocks (25b) of steel plate punched stretching die used are multiple equidistant or isogonism pressures Block is convenient for punching press；It is polygonal pyramid shape that the mower blade, which sets wind wing honeycomb (29), and it is ellipse that middle part, which is equipped with through-hole (30), Truly have noise reduction booster action；The blade of the mower blade sets graphene plating indium；The blade of the mower blade, which is used, to swash Photoquenching processing；The crest line of polygonal pyramid shape and the angle of bottom surface of the wind wing honeycomb are greater than 115 degree of infiltrations and climb angle θ；It is described Siphon pipe is configured on mower blade, to reinforce cooling and lubricating and the comprehensive effect to grass, improves product quality；It is described to cut The liquid of the vitamin containing growth is oozed in the siphon pipe configured on careless machine knife blade, it is existing to mix broken careless supplementary feeding effect, and comfort Promoted the effect of growth by chaffcutter wound；When the blade high speed rotation of the grass trimmer, the ring week on the chassis of the blade of grass trimmer Equipped with more short soft mop cloth strips, air cushion is formed between lawn, makes knife wound less than grass roots；Grass trimmer front, which is equipped with, to be protected Dangerous thick stick (109), bumper are equipped with flexible comb, magnetic survey device and doppler detector are additionally provided with, with iron pipe in defense sector.

Bright spot：

A kind of grass trimmer, grass trimmer control wheel are equipped with the 5G mobile phones positioned by the Big Dipper, and energy remote-control mower is equipped with people Face and fingerprint recognition are to confirm the people to give an order for the first time or manned or automatic Pilot.Blade is multiple tooth hay knife, described more The side of the contrate of the apical tooth (25) of tooth hay knife is the arc containing equiangular spiral；The upper die forming of steel plate punched stretching die used Block (25a) and lower die forming blocks (25b) are multiple equidistant or isogonism briquettings；Siphon pipe is configured on blade, is set in the ring week on chassis There are more short soft mop cloth strips, forms air cushion between lawn；Bumper is equipped with flexible comb, is additionally provided with magnetic survey Device and doppler detector ooze the liquid of the vitamin containing growth in the siphon pipe configured on the mower blade, existing to stir It is acted on broken careless supplementary feeding, and comforts and promoted to grow by chaffcutter wound.

The blade of hay mower is multiple tooth hay knife, and the cross section of the apical tooth (25) of the multiple tooth hay knife, which is equipped with, uses steel The steel plate of the back of a bow that plate punching stretch goes out, hunchbacked both sides has certain angle, and the bottom of the back of a bow is polished to be formed and grinds cutting edge (20), the side of the tooth is the arc containing equiangular spiral, and equiangular spiral is that it is equal everywhere with pressure angle for logatithmic spiral Characteristic；The upper die forming block (25a) and lower die forming blocks (25b) of steel plate punched stretching die used are multiple equidistant or isogonisms Briquetting, steel plate used is first annealed to quench again；It is polygonal pyramid shape that the mower blade, which sets wind wing honeycomb (29), and middle part is equipped with and leads to Hole (30) is oval；The blade of the mower blade sets graphene plating indium；The blade laser of the mower blade Quenching treatment；The crest line of polygonal pyramid shape and the angle of bottom surface of the wind wing honeycomb are greater than 115 degree of infiltrations and climb angle θ；It is described to cut Siphon pipe is configured on careless machine knife blade, to reinforce cooling and lubricating and the comprehensive effect to grass；It is configured on the mower blade Siphon pipe in ooze the liquid of the vitamin containing growth, it is existing to mix broken careless supplementary feeding effect, and comfort and promoted by chaffcutter wound The effect of growth.

Referring to：Figure 67 is the schematic diagram of the high tension protection circuit of the grass trimmer with protective device；Figure 68 is band protective device Grass trimmer low-voltage protection circuit schematic diagram；Figure 69 is the signal of the voltage conversion circuit of the grass trimmer with protective device Figure；It because being all circuit common therefore does not repeat, is a difference in that and showing for other machines is diverted on grass trimmer.

Claims (1)

1. a kind of grass trimmer, grass trimmer control wheel is equipped with the 5G mobile phones positioned by the Big Dipper, and energy remote-control mower is equipped with face With fingerprint recognition to confirm the people to give an order for the first time or manned or automatic Pilot；Gear shaft containing retarder is tubulose And retarder from gear drive inner shaft containing noise elimination (100a), so as to cooling of eliminating the noise；Retarder side containing motor is newly equipped with It is empty tubulose from gear shaft, inside is logical so as to the cooling of outer blowing air, and gear is herringbone bear；Brushless motor 20000 turns of every point of rotating speed, 250 watts of power, 5 millimeters 36 volts, output of shaft diameter；The number of teeth 18 of motor driving gear (88), modulus 0.6, reference circle is 18x0.6=10.8；Remove planetary gear train, the motor driving gear (88) and the motor driven axis newly set On motor engaged from gear (106), the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle are 38x0.6= 22.8, motor driven ratio is 38/18；The motor matches out of gear with 14x5 bearings；On the motor driven axis newly set Equipped with from the number of teeth of tooth sleeve (100) and female connector gear (102), the female connector gear (102) be 12 and modulus be 1.5, it is described Female connector gear, which with the number of teeth as 2812 Double-gears (104) on output gear and the first jackshaft is 28, modulus, to be 1.5, divides Degree circle is that 28 gears of 28x01.5=42 are meshed, and the output gear of the motor driven axis newly set and the first jackshaft pass Dynamic ratio is 28/12；The above transmission ratio is 38/18x28/12=4.9, is more than planet no-load voltage ratio 4.33, actually shares；Remaining no-load voltage ratio is big It causes identical；12 gears (104c) of 28 gears (104a) and 12 numbers of teeth of 2812 Double-gear (104) containing the 28 coaxial numbers of teeth, The both ends of 2812 Double-gear (104) are respectively provided with small bearing (103), and the outer diameter of the small bearing (103) is 14mm, so as to The inner hole at the both ends of 2812 Double-gear (104), the internal diameter of the small bearing (103) be 5 so as to in described first Countershaft activity is assembled；28 gears of identical 2812 Double-gear (104) of another structure also containing the 28 coaxial numbers of teeth 12 gears (104c) of (104a) and 12 numbers of teeth, on the second jackshaft, the both ends of 2812 Double-gear (104) are respectively provided with The outer diameter of small bearing (103), the small bearing (103) is 14mm, so as to the endoporus at the both ends with 2812 Double-gear (104) Cooperation, the internal diameter of the small bearing (103) are 5 to be assembled with the second jackshaft activity；On first jackshaft 2812 Double-gears (104) it is coaxial in 12 gears (104c) and described second of 12 numbers of teeth of 28 gears (104a) of 28 numbers of teeth Identical 2812 Double-gear (104) of another structure on countershaft also 28 gears (104a) containing the 28 coaxial numbers of teeth It is meshed, 28 gears (104a) on second jackshaft and 12 of 2812 Double-gears (104) on first jackshaft It is 2.33 that the second axis transmission ratio between 12 gears (104c) of the number of teeth, which is 28/12,；2812 Double-gear (104) is containing coaxial 28 gears (104a) of 28 numbers of teeth and 12 gears (104c) of 12 numbers of teeth are to use polyformaldehyde machine-shaping in injection mold；Institute The rear axle output par, c for the retarder stated is sequentially arranged with rear axle containing coaxial half rear axle of length and short half rear axle on half rear axle of the length Reducing gearbox oil sealing, peace is driven to close elastic clip (92), iron washer, safety clutch cone (90), hang shelves disk (101), closed containing peace and hang shelves Block (91a) rear axle driving gear (91) presss from both sides axis in long axis, half rear axle of the length be equipped with radial cross-drilled hole with will pass through lateral pin nail with The safety clutch cone (90) is connected, and the peace closes elastic clip (92) and sandwiches the safety clutch cone (90) and the extension shelves disk (101), the safety clutch cone (90) and the extension shelves disk (101) hang link stopper (91a) rear axle with the conjunction containing peace and drive gear (91) it is connected, one end of half rear axle of the length is equipped with axial deep hole, presss from both sides axis to be inserted into the long axis, is inserted into short half rear axle The axial deep hole that is equipped with of one end in and so that half rear axle of the length and the short half rear axle activity is connected；On short half rear axle It is sequentially arranged with rear axle driving retarder upper cover and oil sealing, is also filled with another set of peace conjunction elastic clip (92), iron washer, safety successively Clutch bores (90), hangs shelves disk (101), also is provided with radial cross-drilled hole on short half rear axle will pass through lateral pin nail and another set of institute It states safety clutch cone (90) to be connected, it is (90) and described that another set of peace conjunction elastic clip (92) sandwiches the safety clutch cone Hang shelves disk (101), the safety clutch cone (90) and the extension shelves disk (101) on short half rear axle also with it is above-mentioned uniquely It is described containing peace close hang link stopper (91a) rear axle driving gear (91) be connected；Described closed containing peace hangs link stopper (91a) rear axle driving gear (91) the number of teeth is 33 teeth and modulus is 2.5；12 gears of 12 numbers of teeth of 28 gears (104a) on second jackshaft The transfer rear axle transmission ratio closed containing peace between hanging link stopper (91a) rear axle driving gear (91) on (104c) and the rear axle Be 33/12 be 2.75；Retarder resultant gear ratio is 4.3x33/12x28/12x28/26=4.3x6.9=30 times, is shared；It is special Sign is that the number of teeth 18 of the motor driving gear (88), modulus 0.6, reference circle are the metal gears of 18x0.6=10.8, with Just general；Remove planetary gear train, the motor driving gear (88) and the motor on the motor driven axis newly set are from gear (106) Engagement, the motor from gear (106) be the number of teeth 38, modulus 0.6, reference circle be 38x0.6=22.8 metal gear, motor Transmission ratio is 38/18；The motor matches out of gear with 14x5 bearings；The motor is equipped with the uniformly distributed quartering out of gear Sipes hole (106a) is inserted into allow from the four wide pawl of tooth sleeve (100), and the motor is equipped with the uniformly distributed quartering out of gear Narrow slot hole (106c) be inserted into from four fan pawls of tooth sleeve (100) to allow, four fan pawls are conducive to radiate；Institute State from the other end of tooth sleeve (100) set there are four pusher dog so as to the female connector that is equipped on the motor driven axis newly set Gear (102) is mutually formulated, the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, is set in the female connector gear (102) There is the small bearing (103), it is interior to be inserted into the motor driven axis newly set；It is described to be equipped with big bearing, institute from the outside of tooth sleeve (100) Big bearing is stated to be located on reducing gearbox；It is equipped with from tooth sleeve (100) and female connector gear on the motor driven axis newly set (102), the number of teeth of the female connector gear (102) be 12 and modulus be 1.5, after the other end of half rear axle of the length and described short half The other end of axis is respectively provided with laterally double groovings and laterally with civilian dress rear wheel drive gear, the rear wheel drive gear is double groovings Trailing wheel gear ring (107) of the rear wheel drive cartridge driving gear in hay mower trailing wheel is used in combination in 14 tooth modules 2.5, described The number of teeth of trailing wheel gear ring (107) is that 82 tooth modules 2.5 match big grass trimmer trailing wheel；Each fan pawl from tooth sleeve (100) Fan the exits impeller Ye Dao blade angle be more than 90 degree, for Forword vane impeller fan；It has cold wind effect； The motor of retarder is equipped with circuit for controlling motor；Motor control part principle：

Integrated chip control program, built-in chip type rotor-position decoder, prison are purchased in this system Brush-Less DC motor control part Three motor position sensors are controlled, to provide the correct sequential on top, lower part power MOS drivings, there is six step of all-wave to drive work( Can, peripheral three-phase drive device is integrated metal-oxide-semiconductor, and upper power switch is PMOS tube, and lower part power switch is NMOS tube, is integrated Chip has overcurrent protection function, and R118 resistance is current of electric sampling resistor, after current sampling signal is divided by R117, R119 It is sent to chip current sampling end, when current sampling signal value is more than 0.1V, overcurrent protection function activation, motor stalls, mistake Flowing protection setting point is：

Icurrent=0.1* (R117+R119)/(R118*R119)

When overcurrent events occur, the output of driving chip Fault Output pins is low level, by motor drive signal OutputEnable signals drag down, and motor shuts down, and avoid machine loading electric current excessive and electronic device damage occurs, when When Fault Output are low level, the B-E terminal voltages of triode Q24 are also reduced to zero, and cut-off state is switched to by conducting state, BLADE_FAULT signals are that high level stops all motor operations immediately after MCU receives BLADE_FAULT high level；It removes Outside this this, MCU is additionally provided with two level software overcurrent protection function, so as under different load conditions, flexible handling machine operation Action, avoids machine frequent shutdown,

Software overcurrent protection function can be described as follows：

Current of electric sampled signal BLADE_P8, after 7.8 times of operational amplifier operation amplifier, by amplified sample rate current Analog signal BLADE_CRT signals are given on pins of the MCU with analog-digital conversion function, at built-in AD conversion unit After reason, analog current signal is converted to 12 digital current signals, this signal is compared with the overcurrent threshold signal that MCU is arranged Compared with, when current signal value be more than overcurrent threshold value when, execute run action when corresponding overcurrent.

Left and right movable motor overcurrent protection function having the same, current operator amplifying circuit：

Current amplification factor Counting Formula：

A=1+ (R7/R14) * Icurrent

It is promoted when occurring unusual condition such as machine collision, machine in motor operation course, when machine is overturn, these events occurs Coherent signal is fed back to MCU by perceptron, and MCU is immediately performed brake function,

Specific action process is as follows：

When location bias occurs for the Hall sensor for detecting the above event, hall signal is switched to low level, MCU by high level Pin is detected to level change, and the BLADE_BRK signals sent out are switched to low level by high level, by reverse phase below electricity After the processing of road, generates BLADE_P4 high level signals and give motor drive ic U13, actuating motor brake function, left and right walking electricity Machine function having the same；

Driving chip also have make motor forward/reverse function, when machine operation in collide event when, machine execute retreat work( Can, specific action description is as follows：

When collision alarm is sent to MCU by Hall sensor, MCU will control the signal of the BLADE_DIR in motor operation direction High level is switched to by low level, after the processing of following negative circuit, low level BLADE_P7 signals is generated and is driven to motor Dynamic chip U13, motor switch inverted status by rotating forward, and machine executes fall back action,

Motor speed control principle：

Under different working conditions, motor operation speed also differs machine, it is therefore desirable to feed back the speed of service letter of motor Number give motor drive core U13, this system design use dedicated motor speed detection chip, to generate needed for motor speed control Feedback voltage, without expensive tachometer, U12, you can realize this function；

Concrete operating principle is as described below：

It is motor driven Hall sensor output signals of the chip U13 as the decoding of electronics rotor position and positive or negative jump occurs Become, U12 can be made to generate the pulse of an amplitude and duration, parameter is determined by non-essential resistance R101, C48, U12's Output pulse at pin 5 is integrated by the error amplifier of U13, to generate one DC level, the level and motor speed at Direct ratio, this velocity feedback voltage establishes PWM datums at the pin 13 of U13, and is closed into feedback control loop, output driving The control signal of MOS, meanwhile, the PWM reference voltages at U13 pins 13, which are fed back to MCU, has the pin of analog-digital conversion function, So that MCU learns motor actual motion speed, and control voltage is adjusted according to the difference of actual motion velocity amplitude and setting value；

Interlock circuit is described as follows：

RMOT_DAC is that the target velocity of MCU outputs controls the voltage value, (amplification factor=1+R5/ after operational amplifier amplifies R12), send to the pin 11 of right movable motor driving chip, draw target velocity voltage with the difference of actual speed voltage through core After the amplification of piece internal error amplifier, the reference voltage signal RMOT_P6 that above-mentioned PWM is adjusted is exported at pin 13；

The gear and noise elimination inner shaft of the hay mower blade and retarder are increased because wearing big, temperature, rotating speed is high, noise Greatly, be difficult to ensure longtime running and protection post-processing must be handled, the gear shaft of retarder is tubulose, retarder from gear drive Inner shaft containing noise elimination (100a), so as to cooling of eliminating the noise；Retarder is to drive retarder with the air-cooled no planet rear axle of electric gear inner shaft, It is empty tubulose containing being newly equipped with by motor from gear shaft, it is described be inside gear shaft energy high speed rotation it is logical, The gas of one end of one end three-way motor, the inner via hole of one end leads to one end up to ten thousand for turning high-speed electric expreess locomotive, the external energy rotation of one end Ground is equipped with bearing and from tooth sleeve, described to include the noise elimination inner shaft from gear shaft, described to include described disappear from gear shaft The inner via hole of its other end of sound inner shaft leads to the outside of retarder, is equipped in the noise elimination inner shaft from contained by gear shaft The noise elimination wedge of multiple hexagonal pyramid shapes, the hollow pipe of the inner shaft of one end of the close motor of the noise elimination inner shaft are equipped with more The noise elimination wedge of a hexagonal pyramid shape is intensive, set on the hollow pipe of the inner shaft of one end of the separate motor of the noise elimination inner shaft The noise elimination wedges of multiple hexagonal pyramid shapes be sparse, the middle part of the noise elimination inner shaft is equipped with isolation interconnecting piece so that one end One end of the close motor of the connection slave gear shaft and the one of the separate motor of its other end connection slave gear shaft End, so as to the air-flow come with reference to the motor of Lighthill parameter and the turbulence noise of Richards's noise, close to one end of motor Port it is compressed, reflation enter from gear shaft, the air-flow of reflation is through one end of the close motor of the noise elimination inner shaft The intensive noise elimination wedge for multiple hexagonal pyramid shapes that the hollow pipe of inner shaft is equipped with is recompressed and is slightly transported by noise elimination inner shaft The multiple hexagonal pyramid shapes being equipped with again by the hollow pipe of the inner shaft of one end of the separate motor of noise elimination inner shaft after row it is sparse Noise elimination wedge second compression then spills into the slave gear shaft and includes in described its other end of noise elimination inner shaft and leads to again again Hole leads to the outside of retarder, and the process of noise elimination noise reduction is carried out with compression-expansion recompression reflation；Also it is convenient for outer blowing air cold But；It is mostly gold that blade and reducer gear and the protection of noise elimination inner shaft, which post-process its gear and noise elimination inner shaft containing blade and retarder, Belong to part to be post-processed with high-frequency current using kelvin effect；Using single blade component, three kinds of functions can be realized：It mows When the practical mowing of machine, blade will not skid；Maximum output torque is 11.87NM；When the practical mowing of grass trimmer, blade will not skid Condition be：Slipping torque of the blade on tool apron is greater than the maximum output torque 11.87NM of engine；Blade is on tool apron Slipping torque can be measured by this method：By blade fastening bolt with the torque locking of 45NM, then by engine flywheel It blocks, then blade is pushed with thrust meter, and record the skidding power of blade；Blade slipping torque=skidding power x tests the arm of force；Pass through The above method measures：Blade slipping torque=185*0.205=37.9NM；Blade slipping torque is about engine output torque 3 times；It ensure that grass trimmer is when normal mowing or high load capacity are mowed, blade will not lose the connection with tool apron, and blade will not It skids；When the blade of grass trimmer knocks barrier, blade can skid；When blade knocks the barriers such as stone, this is to blade Moment impact torque it is very big, blade slipping torque 37.9NM can be far longer than；At this point, exactly because single blade component is this Structure design, blade can skid on tool apron automatically, be hit to impact force caused by engine to reduce, and avoid engine damage It is bad；After grass trimmer is mowed for a long time, the function of blade assembly will not fail；It looks up from undersurface of bottom disc, rotation when blade work It is that counterclockwise, the direction for tightening blade fastening bolt is clockwise to turn direction；Such design, ensure that grass trimmer In the process of work, the locking torque of blade fastening bolt has the tendency that becoming larger；Without the lock of blade fastening bolt Clamp force square is smaller and smaller so that the case where blade loosens；Using after 20 hours, measuring, to unscrew blade tight actually mowing for grass trimmer The torque of fixing bolt is 48NM；This numerical value is slightly larger than the torque 45NM of blades fastening bolt；This test number of 48NM In the process of work according to, real example grass trimmer, the locking torque of blade fastening bolt has the tendency that becoming larger；This effect, really After having protected grass trimmer mowing for a long time, the function of blade assembly will not fail；Have two on common its mounting plane of common tool apron A flanged structure.This structure does not have overload protection function；When blade knocks the barriers such as stone, engine damage is easily led to It is bad；The single blade component can meet the function of the needs of actually mowing and overload protection；Subsequently, this blade Components mechanism, it is contemplated that promoted the use of on the grass trimmer of other models；Using kelvin effect, metal works are embedded in rare earth In, it is post-processed with high-frequency current；Its gear and noise elimination inner shaft containing blade and retarder is mostly metal parts, utilizes collection skin Effect is embedded in workpiece in rare earth, is post-processed with high-frequency current, and special efficacy is self-evident；Workpiece uses titanizing aluminium Add rhenium, be placed on containing yttrium oxide, rare earth, indium, clay forming ceramic in, be equipped with same position width penetrate and laser scanning and manufacture；Blade Or with carbon fiber 3 D-printing, then put the first edge on a knife or a pair of scissors with diamond tool, soil is buried in the mixing for placing into nanoscale printing carbon dust, urea, borax Middle heat treatment and with frequency-conversion electromagnetic field and laser scanning and with platinum rhodium catalysis, makes its space lattice dot matrix disperse；Blade or in knife Tip position dress knife blade and be first put into nanoscale printing carbon dust, urea, borax mixing bury in soil carry out carbon, nitrogen and boron and with change Frequency electromagnetic field permeation is heat-treated；It is characterized in that, the mower blade is multiple tooth hay knife, the apical tooth of the multiple tooth hay knife (25) cross section is equipped with the back of a bow for using steel plate punched stretched, and the steel plate of hunchbacked both sides has certain angle, the back of a bow Bottom, which polishes to be formed, grinds cutting edge (20), and the side of the tooth is the arc containing equiangular spiral, and equiangular spiral is logatithmic spiral It is with pressure angle equal characteristic everywhere；The upper die forming block (25a) and lower die forming blocks of steel plate punched stretching die used (25b) is multiple equidistant or isogonism briquettings, and steel plate used is first annealed to quench again；The mower blade sets wind wing honeycomb (29) It is polygonal pyramid shape, and it is oval that middle part, which is equipped with through-hole (30),；The blade of the mower blade sets graphene plating indium；It is described The blade of mower blade is handled with laser quenching；The crest line of polygonal pyramid shape and the angle of bottom surface of the wind wing honeycomb are greater than Angle θ is climbed in 115 degree of infiltrations；Siphon pipe is configured on the mower blade, to reinforce cooling and lubricating and the comprehensive effect to grass； The liquid of the vitamin containing growth is oozed in the siphon pipe configured on the mower blade, it is existing to mix broken careless supplementary feeding effect, again It comforts and is promoted to grow by chaffcutter wound；When the mower blade high speed rotation, the chassis of the blade of grass trimmer It is equipped with more short soft mop cloth strips ring week, forms air cushion between lawn, make knife wound less than grass roots；Grass trimmer front is set There are bumper (109), bumper to be equipped with flexible comb, magnetic survey device and doppler detector are additionally provided with, with iron pipe in defense sector.