CN104756674B - Arc wave and straight ripple powder metallurgy lawn mower gear case with equal pressure logistic curves - Google Patents

Abstract

Disclosed is an arc wave and straight ripple powder metallurgy lawn mower gear case with equal pressure logistic curves. A clutch sliding block of the arc wave and straight ripple powder metallurgy lawn mower gear case with the equal pressure logistic curves has the important significance that a flange (1a5) is arranged in the middle, and a rear driving plate (1a7) is arranged at the rear end. Warm extrusion metallurgy powder is difficultly pulled laterally in the prior art, and smartly, a large number of openings which are complementarily stagger are respectively formed in the flange (1a5) arranged in the middle of the clutch sliding block and the rear driving plate (1a7) arranged at the rear end of the clutch sliding block. Accordingly, the arc wave and straight ripple powder metallurgy lawn mower gear case with the equal pressure logistic curves not only has the advantages of facilitating mold release, and overcoming the difficulty that the double layer flange or the driving plate can not be manufactured for the warm extrusion metallurgy powder, but also enables a user to conveniently insert a shifting fork into a space between the double layer flange and the driving plate, can obtain force on both the right side and the left side, and then can obtain the force of the shifting fork both in separation and combination, and thereby fundamentally solves a fault problem in the separation and the combination. A profile curve of a main form of the clutch sliding block and a clutch block is a segment of a logarithmic spiral so as to enable arc wave and straight ripple clutching with the equal pressure logistic curves to approach the advanced mathematical scientific basis that pressure angles are equal everywhere, and therefore the arc wave and straight ripple powder metallurgy lawn mower gear case with the equal pressure logistic curves is stable and reliable.

Description

There is equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box

Technical field

The present invention relates to a kind of hay mower cut the grass on a lawn for places such as garden, park and road sides, especially Being to have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its great undertaking is that clutch slider entirety exists Be provided with in the middle part of it flange (105) and behind end be provided with rear driver plate (1a7), take out because being that warm extrusion powder metallurgy is bad, it is done Flange (105) and the rear driver plate (1a7) that end is provided with behind that what method was skilful is is provided with in the middle part of it at described clutch slider are all provided with There is the opening that multiple complementation is staggered, the most conveniently stripped, stride across warm extrusion powder metallurgy and can not make double-deck flange and driver plate Difficulty, facilitates again and enters shift fork at double-deck flange and driver plate plug-in mounting therebetween so that left and right is the most capable i.e. can be obtained from closing The power of shift fork, fundamentally solves clutch and does not slips up.Clutch slider and the end of clutch block along end circumference be provided with multiple Having on the clutch cone of logatithmic spiral and be shaped 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), end ripple (1a4), say, that at the wheel of described clutch slider Yu the dominant shape state of clutch block Wide curve is a section of logatithmic spiral, in order to closer to the pressure angle of higher mathematics when having a straight ripple clutch of loaarithmic curve arc wave The most equal scientific basis and more steadily and more reliable.Explore warm extrusion powder metallurgically manufacturing method to have innovated.

Background technology

Hay mower is widely used in sometimes certainly walking as selected by the hobby of people and does not the most cut from the mode walked Grass.Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block be axially displaced to clutch.Existing The clutch block of the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of the traverse gear of technology, is only by clutch block side Circular cone carrys out clutch, needs bigger axially combined power, and the damage phenomenon causing intrinsic pressure ring washer to rupture occurs frequently；Between taper seat Engaging process produces frictional heat, in needing gear-box, adds lubricating oil；And between taper seat, have friction to have slip, consumed work relatively Rate.Still the metal class of hay mower gear-box either Plastic, limited by technology and cost etc., certainly walk clutch not Steady and insecure situation happens occasionally, and solves the international long-standing of sporadic not clutch problem, always industry Problem.

In order to overcome hay mower prior art rear wheel drive decelerator in clutch caused by duty Deficiency, and also to invent several different types of hay mower clutch and decelerator, the present inventor with lifetime Working experience, has made multiple design and innovation both at home and abroad, and the perfection pursuing invention just like the mankind is the most continuous, the most below Plant progressively improvement and perfect practical plan to combine multiple diagram and explained orally in detail.

The first string is to provide the improvement of the rear-guard speed-reducing clutch of a kind of hay mower traverse gear, it is possible to be referred to as Sine wave type clutch block, one can make intrinsic pressure pad not easy fracture, and two can make relative slip power consumption and friction between clutch part send out The duty of heat makes moderate progress.

The first string solves the foundation of the technical scheme that its technical problem is taked:

The juncture of the fastener of mechanical clutch have friction and the big class of rigidity two, rub class can be used for higher speed but Easily slide and heating；And the higher speeds such as category of rigid such as jaw clutch have shock and vibration when engaging；To this end, the present invention is existing Side circular cone friction clutch has again a sinusoidal wave semi-rigid clutch of end face, perhaps from mechanical clutch with this it can be said that this It is rigidity and the ingenious combination of friction two class junctures of clutch engagement.

The first string solves the equation of the technical scheme that its technical problem is taked and modeling method is:

Using PRO/ENGINEER WILDFIRE mapping software, newly set working directory, newly-built part, grass paints 2 with one heart Circle.

Opening variable cross section scanning (Var Sect Sweep) instruction, choosing above 2 circles is scanning track and reference locus.

Draw the straight line of parallel 2 disks, length L=(D-d)/2, and corresponding round edge is along projection line.

Set up parameter (PARAMETER) 1:C real number (real number), can be with composing between 0.01-1 according to concrete operating mode Value, such as 0.3.

Set up parameter (PARAMETER) 2:N integer (integer), can be with according to concrete operating mode choosing value between 2-100, example Such as 13.

The sinusoidal wave equation of opening relationships (RELATION), the i.e. present invention is:

SDi=C*SIN (TRAJPAR*360*N)

In above formula, i is dimension figure serial number；SIN=SINE, SIN function；TRAJPAR, lopcus function.

Followed by, using and rotate, merge, hypostazation etc. instructs.

Special needs to be pointed out is, the waveform of the present invention may be used without other waveform, such as other multiple mathematical function Or the roundest and the most smooth waveform of other non-precipitous broken line.

The first string is also invention, is adopted the technical scheme that:

A kind of rear wheel driving of rear drive decelerating clutch sine wave type clutch block of lawn-mower, i.e. self-moving lawn mower The sine wave type clutch block of the arrangement of clutch in moving gear decelerator, by the clutch being located in rear wheel drive gear speed-reducing clutch Original side circular cone clutch block of device and the end face sine wave type clutch block being newly provided with are formed, it is characterised in that described The end face of the side circular cone clutch block being located at the arrangement of clutch in rear wheel drive gear speed-reducing clutch is sine wave type clutch block. And the parts of clutch related to the present invention be still gear internal skew back taper seat and newly-increased can be with sine wave type clutch block The wave mode face matched or other can be with the face of sine wave type clutch block clutch such as multiple spot projection envelope etc..

The first string provides the benefit that: the design utilizes existing speed-reducing clutch shell and major part part, only changes The minority parts such as dynamic clutch block and therewith phase accessory, both having improved low speed jaw clutch is that sine wave type clutch block is so that it can use In the occasion of higher speed, utilize the common load sharing of end face and side to improve again the friction heating of side circular cone clutch block simultaneously Operating mode, thus the phenomenon that existing hay mover rear gear box intrinsic pressure clutch block pad often ruptures can be improved, perhaps from mechanical type from Clutch with this upper for, be rigidity and the ingenious combination of friction two class junctures of fastener.

Below in conjunction with the accompanying drawings with embodiment to the first scheme also be invention further illustrate.

Fig. 1 be the first scheme also be invention left view schematic three dimensional views.

Fig. 2 be the first scheme also be invention the right side regard schematic three dimensional views.

Fig. 3 be the first scheme also be invention the right side regard two-dimensional representation.

Fig. 4 be the first scheme also be invention B to profile.

Fig. 5 be the first scheme also be invention forward sight two-dimensional representation.

Fig. 6 be the first scheme also be invention A to profile.

As shown in Figures 1 to 6, in figure, 1a. is clutch slider, is sine wave type clutch block herein.

Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block (1a) be axially displaced to Engage.The clutch block (1a) of the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of the traverse gear of this technology, not only leans on The circular cone of clutch block side engages, and has the waveform of end face to assist joint.When operation pedestrian unclamps from walking to handle hands Handle, by steel wire rope and driving lever elastic reset, makes clutch block (1a) be axially displaced to leave.Owing to end face is round and smooth sine Waveform is more easy to leave than dental inlay clutch block.

First scheme provides the improvement of the rear-guard speed-reducing clutch of a kind of hay mower traverse gear, it is possible to be just referred to as Chord wave type clutch gear, one can make intrinsic pressure pad not easy fracture, and two can make relative slip power consumption and friction between clutch part send out The duty of heat makes moderate progress.

First scheme is adopted the technical scheme that:

A kind of hay mower rear-guard speed-reducing clutch sine wave type clutch gear, i.e. self-moving lawn mower trailing wheel The sinusoidal wave form clutch gear of the arrangement of clutch in driving gear reduction unit, by being located in rear wheel drive gear speed-reducing clutch The medial surface circular cone sinusoidal wave form clutch inwall of arrangement of clutch and kick and gear are formed, it is characterised in that described is located at The interior face of the arrangement of clutch in rear wheel drive gear speed-reducing clutch is circular cone or has waveform particularly sinusoidal wave form The inwall of equipped clutch block and multiple kick, the skew back taper seat of i.e. equipped with associated clutch block is gear internal and Wave mode face that sinusoidal wave form matches or other can be with the face of waves clutch block clutch such as multiple spot projection envelope etc..

First scheme provides the benefit that: the design utilizes existing speed-reducing clutch shell and major part part, only changes The minority parts such as dynamic clutch gear and therewith phase accessory, both improved low speed jaw clutch be sine wave type clutch gear so that its Can be used for the occasion of higher speed, utilize the common load sharing of end face and side to improve again the mill of inner side circular cone clutch gear simultaneously Wipe heating operating mode, thus the phenomenon that existing hay mover rear gear box intrinsic pressure clutch block pad often ruptures can be improved, perhaps from machine Tool formula clutch fundamentally for, be fastener rigidity and friction two class junctures ingenious combination.

Below in conjunction with the accompanying drawings with embodiment to first scheme also be invention be described further.

Fig. 7 be first scheme be also the schematic perspective view of invention sine wave type clutch gear；

Fig. 8 be first scheme be also the front elevational schematic of invention sine wave type clutch gear；

Fig. 9 be first scheme be also the cross-sectional schematic of invention sine wave type clutch gear；

Such as Fig. 7, shown in Fig. 8, Fig. 9,

In figure: 1b. is sine wave type clutch inwall；

2b. is multiple microspikes；

3b. is gear.

Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block be axially displaced to engage. The clutch gear of the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of the traverse gear of this technology, not only by clutch gear The circular cone of medial surface engages, and has the particularly sinusoidal wave inwall of i.e. waveform of deformation and multiple little micro-protuberance to assist and connect Close.When operation pedestrian unclamps from walking control crank, by steel wire rope and driving lever elastic reset, clutch block is made to be axially displaced to Leave this clutch gear.Owing to inwall is that round and smooth sinusoidal wave form is more easy to leave than dental inlay clutch block.

The third scheme is also invention, is adopted the technical scheme that:

A kind of hay mower gear clutch speed reducer shift fork, the i.e. gear of self-moving lawn mower rear wheel drive from The shift fork of the arrangement of clutch in conjunction decelerator, by upper shift fork head (1c), sets aside jaw (2c), arched arm (3c), short axle ((9c) institute Composition, all there is the short axle (9c) of coaxial line the top and bottom of described shift fork；Described short axle is fixed by arched arm (3c) Linking, link the most respectively is upper shift fork head (1c) and sets aside jaw (2c), it is characterized in that described upper shift fork head (1c) and Set aside jaw (2c) symmetrical about main shaft (7c)；Can be seen that from the top view of Fig. 3 shift fork, particularly described upper shift fork Head (1c) and set aside the outermost end of jaw (2c) and protrude along main shaft (7c), relative to the axle center of described short axle (9c) Line and for the plane at the camber line place, middle part of arched arm (3c).From the top view of Fig. 3 shift fork it is also seen that upper shift fork Head (1) and set aside the downward projection of jaw (2c) and fall and protrusion upper at main shaft (7c)；The axial line of described short axle (9c) is not In the plane at the camber line place, middle part relative to arched arm (3c), the most not on main shaft (7c).Main shaft (7c) be gear from The main shaft of the arrangement of clutch in conjunction decelerator, is also self-moving lawn mower rear wheel drive main shaft.The short axle in upper end also sets There are double flute and screw thread to lay pull bar and being handled by bracing wire；So make the existing desired group of power of shift fork again at certain angle Degree rotates freely.

The third scheme provides the benefit that: the described upper shift fork head of the design is symmetrical with setting aside jaw and protrudes , dialled point by original one and be improved to two groups of points of equilibrium, make original list dial torsional moment and improved, make clutch stir There is improvement earlier above, make pad be hardly damaged, add the improvement of other associated components, the longevity of gear clutch speed reducer can be continued Life, thus promote the quality of hay mower.

Below in conjunction with the accompanying drawings with embodiment to the third scheme also be invention further illustrate.

Figure 10, be the third scheme be also the schematic diagram of shift fork of invention；

Figure 12, is the schematic diagram of the gear clutch speed reducer of the third scheme；

Figure 11, be the third scheme be also the top view of shift fork of invention.

As shown in Figure 10 to Figure 12:

In figure, 1c. is upper shift fork head；

In figure, 2c. is to set aside jaw；

In figure, 3c. is arched arm；

In figure, 4c. is slip pulling sleeve；

In figure, 5c. is thrust bearing shim；

In figure, 6c. is crossed helical gears；

In figure, 7c. is main shaft；

In figure, 8c. is lower house；

In figure, 9c. is short axle；

Operation pedestrian pulls from walking control crank, by steel wire rope and pull bar, makes to be linked by screw thread and two grooves And rotate certain angle by being installed on the short axle (9c) of the upper and lower side of gear speed-reducing clutch housing such as lower house (8c) Degree, and interlock upper shift fork head (1c) by arched arm (3c) and set aside jaw (2c), promote slip pulling sleeve (4c) and promote clutch Bearing shim (5c) and clutch block are axially moveable, thus engage in the rear wheel drive gear speed-reducing clutch of traverse gear from The clutch gear of locking device i.e. crossed helical gears (6c) is carried out from walking.When operation pedestrian unclamps from walking control crank, logical Cross steel wire rope and pull bar makes shift fork elastic reset, make clutch block be axially displaced to leave clutch gear.It is to say, clutch tooth Wheel decelerator shift fork essence controls certainly walking of hay mower.

4th kind of scheme is also invention, is adopted the technical scheme that:

The single side pushing of the arrangement of clutch in the gear clutch speed reducer of a kind of self-moving lawn mower rear wheel drive is sliding Set, namely hay mower gear clutch speed reducer single side pushing sliding sleeve (4d), by sliding sleeve (41d), single group of limit (42d), inner cone Flange (43d) is formed；The sliding sleeve (41d) of described single side pushing sliding sleeve (4d) is provided with discoid list and dials limit (42d)；Institute The list of the single side pushing sliding sleeve stated is dialled limit (42d) and is provided with inner cone flange (43d), and the medial surface of inner cone flange (43d) is taper seat, Preferably it is not more than 30 degree with axial angle.Owing to described single side pushing sliding sleeve (4d) is suit and slides on main shaft, therefore The axis (7d) of described single side pushing sliding sleeve (4d) coincides with the master of the arrangement of clutch in hay mower gear clutch speed reducer Axis (7d), this is also self-moving lawn mower rear wheel drive main shaft.The sliding sleeve (41d) of described single side pushing sliding sleeve (4d) Outside be movably installed with shift fork；Shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, Inner cone flange (43d) the contact thrust bearing shim on limit (42d) is i.e. dialled by described list, so that arrangement of clutch work.Described The list of single side pushing sliding sleeve (4d) to dial limit (42d) in the form of annular discs；The back side of the disk on limit (42d) and described interior dialled by described list Cone flange (43d) all can contact thrust bearing shim.The short axle in upper end of shift fork be additionally provided with double flute and screw thread in case lay pull bar and Handled by bracing wire, so that the existing desired group of power of shift fork rotates freely at certain angle again.

4th kind of scheme provides the benefit that: the described hay mower gear clutch speed reducer single side pushing of the design is sliding Set (4d), makes original list dial torsional moment and has improved, and making clutch stir earlier above has improvement, makes pad be hardly damaged, adds The improvement of other associated components, can continue the life-span of gear clutch speed reducer, thus promote the quality of hay mower.

A kind of hay mower gear clutch speed reducer single side pushing sliding sleeve of the 4th kind of scheme, by sliding sleeve (41d), single group of limit (42d), inner cone flange (43d) is formed；It is characterized in that: the sliding sleeve (41d) of described single side pushing sliding sleeve is provided with single group of limit (42d)；List at described single side pushing sliding sleeve is dialled and is provided with inner cone flange (43d) on limit (42d).Particularly described single side pushing is sliding The sliding sleeve (41d) of set (4d) is provided with discoid list and dials limit (42d).

Below in conjunction with the accompanying drawings with embodiment to the 4th kind of scheme also be invention further illustrate.

Figure 13, be the 4th kind of scheme also be invention schematic diagram；

Figure 14, is the schematic diagram of the gear clutch speed reducer of the 4th kind of scheme；

Figure 15, be the 4th kind of scheme also be invention sectional view.

As shown in FIG. 13 to 15:

1d. is upper shift fork head；

2d. is to set aside jaw；

3d. is arched arm；

4d. is slip pulling sleeve；

5d. is thrust bearing shim；

6d. is crossed helical gears；

7d. is main shaft；

8d. is lower house；

9d. is short axle；

42d. is monolateral；

43d. is inner cone flange.

Operation pedestrian pulls from walking control crank, by steel wire rope and pull bar, makes to be linked by screw thread and two grooves And rotate certain angle by being installed on the short axle with upper and lower side of gear speed-reducing clutch housing such as lower house 8, And interlock upper shift fork head 1 by arched arm 3 and set aside jaw 2,2 described shift fork heads synchronize contact and promote slip pulling sleeve Limit 42 dialled by the list of 4, and by the sliding sleeve 41 of described slip pulling sleeve and the back side on single group of limit 42 and the inner cone being located on single group of limit 42 Internal conical surface on flange 43 promotes Engaging-and-disengaging bearing pad 5 and clutch block to move axially along main shaft 7 jointly, thus engages from walking The clutch gear i.e. crossed helical gears 6 of the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of mechanism is carried out from walking. When operation pedestrian unclamps from walking control crank, make shift fork elastic reset by steel wire rope and pull bar, make clutch block move vertically Move and leave clutch gear.It is to say, clutch gear decelerator shift fork and single side pushing sliding sleeve of the present invention 4 essence are controlled jointly Certainly walking of hay mower.

Fifth version is also that invention is adopted the technical scheme that:

A kind of oil port of speed reducer of lawn grass cutter, i.e. self-moving lawn mower side of rear wheel drive gear reduction unit The hydraulic fluid port placed, by the side platform (4e) of the lower house side being located at rear wheel drive gear speed-reducing clutch, is located at decelerator side The screwed hole (2e) of face rather than bottom surface and be located at breach (3e) the institute group of the lower section of screwed hole and the bottom surface in housing Become, it is characterised in that the described screwed hole being located at decelerator is in housing side, say, that particularly described screw thread The axis in hole (2e) is not orthogonal to bottom surface.The demoulding is i.e. without side core-pulling for convenience, and the side platform (4e) putting spiral shell mosquito hole is There is indentation arc component big with top is joined directly together rather than centre.Described screwed hole for being screwed into hydraulic fluid port screw, Therefore make the external diameter of threaded line press close to end inner face as far as possible, in order to few retained oil during draining.The described lower section being located at screwed hole and The breach (3e) of the bottom surface in housing can be cylindrical, and rectangle or the shallow breach of other shape, be to prevent screw Do not touch and set.

The adopted reason of fifth version is:

Hay mower is widely used in sometimes certainly walking as selected by the hobby of people and does not the most cut from the mode walked Grass.Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block be axially displaced to clutch.Existing The clutch block of the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of the traverse gear of technology, is only by clutch block side Circular cone carrys out clutch, needs bigger axially combined power, and the damage phenomenon causing intrinsic pressure ring washer to rupture occurs frequently；Between taper seat Engaging process produces frictional heat, in needing gear-box, adds lubricating oil.And original drain tap is located at the end of lower casing of decelerator Portion, as shown in the lower hydraulic fluid port (1e) of Fig. 1.Lower hydraulic fluid port has 2 shortcomings, one be the high pad protruded below hull outside and Nut easily touches the axle of height-regulating device；Another be the female plateau of protrusion of enclosure interior higher than bottom surface, cause draining Time shell below the upper plane of the plateau of described lower hydraulic fluid port in retained oil a lot.

In order to overcome hay mower prior art rear wheel drive decelerator i.e. decelerator bottom hydraulic fluid port caused by the end Portion is easily touched, and the deficiency that draining is detained, the present invention provides the rear-guard speed-reducing clutch of a kind of hay mower traverse gear i.e. to slow down The improvement of the hydraulic fluid port of device, it is possible to being referred to as the hydraulic fluid port of the decelerator that side is placed, one can make bottom not touch, two can make draining be detained Less.

Fifth version is also that the beneficial effect of the invention is: the design utilizes existing speed-reducing clutch shell and major part zero Part, only changes lower house and the minority part that matches therewith, the length of such as screw, both improved decelerator outside by filling not Touch, improve again the problem that its internal oil is detained.

Below in conjunction with the accompanying drawings with embodiment to fifth version also be invention be described further.

Figure 16, is the profile of former lower casing hydraulic fluid port；

Figure 17, is the upward view of former lower casing hydraulic fluid port；

Figure 18, be fifth version also be invention schematic diagram；

Figure 19, be fifth version also be invention profile；

Figure 20, be fifth version also be invention assembling section.

As shown in Figure 16, Figure 17, Figure 18, Figure 19 and Figure 20:

In figure, 1e. is crude oil mouth；

In figure, 2e. is threaded hydraulic fluid port；

In figure, 3e. is lower breach；

In figure, 4e. is side platform；

Below in conjunction with the accompanying drawings and embodiment, also it is that invention is described further to fifth version:

Fifth version is a kind of oil port of speed reducer of lawn grass cutter, i.e. self-moving lawn mower rear wheel drive gear The hydraulic fluid port that the side of decelerator is placed, it mainly includes that the side being located at the lower house side of rear wheel drive gear speed-reducing clutch is put down Platform (4e), is located at decelerator side rather than the screwed hole (2e) making hydraulic fluid port of bottom surface and is located at the lower section of screwed hole and at shell The breach (3e) of internal bottom surface, it is characterised in that the described screwed hole being located at decelerator is in housing side, the most just Being to say, the axis of particularly described screwed hole (2e) is not orthogonal to bottom surface.The demoulding is i.e. without side core-pulling for convenience, puts The side platform (4e) in spiral shell mosquito hole is that arc component big with top is joined directly together rather than there is indentation centre.Described screwed hole For being screwed into hydraulic fluid port screw, therefore the external diameter of threaded line is made to press close to end inner face as far as possible, in order to few retained oil during draining.Described The breach (3e) being located at the lower section of screwed hole and the bottom surface in housing can be cylindrical, and rectangle or the shallow of other shape lack Mouthful, set to prevent screw from not touching.

A kind of oil port of speed reducer of lawn grass cutter, the side platform (4e) mainly including being located at the lower house side of decelerator and Make the screwed hole (2e) of hydraulic fluid port on it and be located at the breach (3e) of the lower section of screwed hole and the bottom surface in housing, its feature It is that the described screwed hole being located at decelerator is in housing side, say, that particularly described screwed hole (2e) Axis is not orthogonal to bottom surface.Put the side platform (4e) in spiral shell mosquito hole be that arc component big with top is joined directly together rather than in Between have indentation.The external diameter of the threaded line of described screwed hole presses close to end inner face.The described lower section being located at screwed hole and at shell The breach (3e) of internal bottom surface can be cylindrical, rectangle or the shallow breach of other shape.Described screwed hole (2e) is In housing side, say, that the axis of particularly described screwed hole (2e) is not orthogonal to bottom surface.And described putting The side platform (4e) in spiral shell mosquito hole is that arc component big with top is joined directly together rather than there is indentation centre.

In the specific implementation, at the described screwed hole (2e) making side hydraulic fluid port, assembling pad and screw.When to let out When going out lubricating oil, backing out screw, owing to flow export is relatively low, and have described breach (3e), oil is the fewest to be detained.Due to described work The new design from bottom surface to side of the screwed hole (2e) of side hydraulic fluid port, solves the problem of easily touching at the bottom of protoconch.

It is continuous that the mankind pursue technological progress, the 6th kind of scheme be in clutch and the side of outer clutch with rotation Method.

General hay mower be widely used in as selected by the hobby of people sometimes from walking the most not from the mode walked Mow.Operation pedestrian pulls from walking control crank, by steel wire rope and driving lever, makes clutch block be axially displaced to clutch. The clutch block of the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of the traverse gear of prior art, is only by clutch block side The circular cone in face carrys out clutch, needs bigger axially combined power, and the damage phenomenon causing intrinsic pressure ring washer to rupture occurs frequently；Taper seat Between in engaging process produce frictional heat, add lubricating oil in needing gear-box；And between taper seat, have friction to have slip relatively, consume Power.Can in any case, the clutch in gear speed-reducing clutch generates heat always, do not want the clutch in gear speed-reducing clutch Device, and clutch is put into the outside of gear-box？The most not only reduce heating, and the cost of gear-box can be lowered；Institute With, the 6th kind of scheme also known as lawn machine worm screw zigzag tooth roller box according to holder pivots clutch just arises at the historic moment.If using powder The metallurgical umbrella tooth then gear ratio in end is little and is not durable；If without support, particularly separating during clutch, sometimes cling and unreliable.Cling Refer to that belt and big belt pulley the most wilfully have related phenomenon when needing and separating sometimes.

In order to aspire after perfection, improve the rear wheel drive gear deceleration clutch of the traverse gear of general hay mower further Arrangement of clutch in device, eradicates the circular cone by clutch block side and carrys out clutch, produces frictional heat, disappear between taper seat in engaging process Wasted work rate, causes the generation of the damage phenomenon that intrinsic pressure ring washer ruptures；Simultaneously in order to lower the cost of gear-box, the present invention is many On the basis of secondary improvement, it is provided that a kind of no-load voltage ratio is big, and the not clutch in gear speed-reducing clutch, and turn clutch drawing It is put into the gear-box of the outside of gear-box, the also known as lawn machine worm screw zigzag tooth roller box according to holder pivots clutch.

The lawn machine worm screw zigzag tooth roller box according to holder pivots clutch, by according to support (62), fuselage determines frame (63), bracing wire (68), extension spring (66), dynamic arm-tie (69), auxiliary drop panel (65), main rear axle (64), gear housing (61), belt pulley (67), case lid (70), multiple screws (79), big sealing gasket (73), it is provided with the staggered gear (71) of (71f) groove, staggered worm screw (72), rear bearing Seat (74), ring washer (75), thick straight pin (76), thin straight pin (78), spring (77), formed, be it is characterized in that: described is depended on One end bolt of support (62) and fuselage determine the fixing connection of frame (63), and described fuselage determines frame (63) by another nut and grass The rear wall of lawn mower fuselage connects firmly mutually, and the described other end according to support (62) is provided with open slot (62f)；Described bracing wire (68) be inserted in actively in the open slot (62f) that the described other end according to support (62) is provided with, and with described extension spring (66) closing in end connects, and the other end of described extension spring (66) i.e. hook end are connected with described dynamic arm-tie (69)；Institute The dynamic arm-tie (69) stated is by multiple screws (79) and gear housing (61), case lid (70) and big sealing gasket (73) company of fixing Connect；The described middle part according to support (62) is provided with macropore, and described main rear axle (64) movingly through described according to support (62) macropore at middle part.

The described other end according to support (62) is provided with open slot (62f), referring to Figure 32, and its open slot being provided with (62f) Feature be that the narrow slot of its opening has a turnover, minimum 1, or multiple；The inside of narrow slot is connected with circular hole；So that it is described The steel wire rope of bracing wire (68) narrow slot of turnover can be inserted in from side and enter circular hole；The end of the outer layer of bracing wire then with institute The other end according to support (62) stated is provided with the upper surface of open slot (62f) and contacts, but must not pass through；And the most described drawing The steel wire rope of line (68) can pass through it, and is connected with the closing in end of described extension spring (66), and by described extension spring (66) The other end i.e. hook end be connected with described dynamic arm-tie (69).

Described fuselage determines the feature of frame (63), referring to Figure 33, has two angles flat board more than right angle, puts down for first Plate is provided with screwed hole or nut, and is provided with slotted hole on another flat board, in order to assembling and the regulation of bolt.

The feature of described extension spring (66) is that its one end has closing in end, and the other end of described extension spring (66) is opening Hook end.

Referring to Figure 34, the feature of described dynamic arm-tie (69) is to which is provided with auxiliary drop panel (65), be additionally provided with arc and Position, multiple hole, in order to described dynamic arm-tie (69) by multiple screws (79) and gear housing (61), case lid (70) and sealing greatly Pad (73) is fixedly connected；And the auxiliary drop panel (65) that described dynamic arm-tie (69) is provided with is provided with position, hole, in order to by suitable When spring and be connected with the applicable position of fuselage and play auxiliary torr role, depending on type, some type need.

Referring to Figure 35, described main rear axle (64) is provided with the hole hung down mutually, in order to lay thick straight pin (76), thin straight pin (78) pocketed springs (77) between, and two selling；The feature of described spring (77) is that its two ends are and tight and polish.

Referring to Figure 28, the described staggered gear (71) being provided with (71f) groove, it is enclosed within and is arranged on described main rear axle (64) On the hole hung down mutually on thick straight pin (76), thin straight pin (78), and the outside of the spring (77) of suit between two pins； And be meshed with described staggered worm screw (72)；The feature of the described staggered gear (71) being provided with (71f) groove is its (71f) groove An at least groove, or multiple-grooved, such as two grooves, particularly two grooves are to hang down mutually, and are small one and large one, in order to thick with described Straight pin (76), thin straight pin (78), and the spring (77) of suit cooperates between two pins.This have the advantage that not only Being to utilize original parts, the axial length shortening gear (71) (otherwise to be beaten in the outside lengthening one section of gear Installing hole, on face of gear, punching can affect engagement), and the buffering that two pin one spring tacit cooperations are of value to gear engages and anti-bite Extremely, especially in the moment of clutch, moreover also it is easy to assembling, pin need not be pounded, be inserted in.

Referring to Figure 31, described gear housing (61) is provided with lays bearing position, in order to laying staggered worm screw (72)；Described Gear housing (61) be additionally provided with lay main after the seat (61f) of bearing housing (74), it is characterized in that in described seat (61f) The heart is not as common gear-box on die joint, but U-shaped, say, that its center is far deeper than die joint, it is sufficient to Put into include complete main after the diameter of axle rear bearing block (74) after, also will not exceed die joint, also can just be easy to holding plane shape Big sealing gasket (73).Its usefulness is to overcome over, as shown in Figure 12 and Figure 14, and the nothing that axle center is caused on die joint Method set level sealing gasket and gluing had both been taken a lot of work difficult even drawback.

As further illustrated in figures 21-24, described belt pulley (67) is arranged on one end of staggered worm screw (72)；And by belt quilt The small pulley of engine output end is dragged.

As shown in Figure 29 and Figure 35, one end lace wheel of described staggered worm screw (72)；And staggered worm screw (72) passes through Bearing is arranged in described gear housing (61), and engages with described staggered gear (71)；It is characterized in that: described is staggered The end of the other end of worm screw (72) is cone, in order to the cone with case lid (70) cheats adaptation flexibly.

As shown in Figure 29 and Figure 35, one end lace wheel of described staggered worm screw (72).Its mode connected has 2 kinds； 1st kind is to use pin；Described pin steel spring plate circle becomes, and broad in the middle and two is smaller；Staggered worm screw is first installed (72) to gear-box, then belt pulley is installed and squeezes into pin；2nd kind of connected mode is with key and at axle head tapping.

As shown in Figure 29 and Figure 25, the feature of case lid (70) is: described case lid (70) is provided with the big plane of periphery, and The big plane of periphery is provided with multiple hole, in order to be connected with big sealing gasket (73) and gear housing (61) by multiple screws (79) Connect；And it is provided with cone hole at the jut of case lid, in order to the conical, flexible ground of the end of the other end of staggered worm screw (72) Adaptive.

As shown in Figure 36 and Figure 14, the feature of described rear bearing block (74) is the external form having D-shaped, and its endoporus is round, In order to putting main rear axle, and outside is D-shaped, in order to be connected with big sealing gasket (73) and gear housing (61), and is no longer such as figure The rear bearing block of the wholecircle shown in 14.

As shown in figure 30, the feature of described big sealing gasket (73) is to have big plane and multiple hole, in order to gear housing (61) connect with rear bearing block (74) and case lid (70).

Clutch in described not gear speed-reducing clutch, and turn clutch be put into the outside of gear-box drawing Gear-box, the also known as lawn machine worm screw zigzag tooth roller box according to holder pivots clutch provides the benefit that, improves further Arrangement of clutch in the rear wheel drive gear speed-reducing clutch of the traverse gear of general hay mower, eradicates by clutch block side Circular cone carry out clutch, between taper seat in engaging process produce frictional heat, power consumption, cause the damage that intrinsic pressure ring washer ruptures The generation of phenomenon；Reduce the cost of gear-box simultaneously.But, the support outside gear-box adds, and it also has a cost, therefore assembly This simply slightly reduces, and the effect then reducing frictional heat in gear-box without clutch is affirmative.

Below in conjunction with the accompanying drawings with embodiment to the 6th kind of scheme also be invention be described further.

Figure 21 be the 6th kind of scheme be also the three-dimensional signal of the lawn machine worm screw zigzag tooth roller box according to holder pivots clutch Figure；

Figure 22 be the 6th kind of scheme be also lawn machine another visual angle with the worm screw zigzag tooth roller box according to holder pivots clutch Schematic perspective view；

Figure 23 be the 6th kind of scheme be also lawn machine another visual angle with the worm screw zigzag tooth roller box according to holder pivots clutch Schematic perspective view；

Figure 24 be the 6th kind of scheme be also lawn machine another visual angle with the worm screw zigzag tooth roller box according to holder pivots clutch Schematic perspective view；

Figure 25 is the schematic perspective view of case lid (70)；

Figure 26 be the 6th kind of scheme be also the lawn machine visual angle to the rear with the worm screw zigzag tooth roller box according to holder pivots clutch Schematic perspective view；

Figure 27 be the 6th kind of scheme be also the lawn machine visual angle to the rear with the worm screw zigzag tooth roller box according to holder pivots clutch The schematic perspective view removing case lid；

Figure 28 is provided with the schematic perspective view of the staggered gear (71) of (71f) groove；

Figure 29 is the schematic perspective view of staggered worm screw (72)；

Figure 30 is the schematic perspective view of big sealing gasket (73)；

Figure 31 is the schematic perspective view of gear housing (61)；

Figure 32 is the schematic perspective view according to support (62)；

Figure 33 is the schematic perspective view that fuselage determines frame (63)；

Figure 34 is the schematic perspective view of arm-tie (69)；

Figure 35 be the 6th kind of scheme be also the lawn machine visual angle to the rear with the worm screw zigzag tooth roller box according to holder pivots clutch Remove case lid and the schematic perspective view of big sealing gasket；

Figure 36 is the schematic perspective view of rear bearing block (74)；

Figure 37 is the schematic perspective view of ring washer (75)；

Figure 38 is the schematic perspective view of spring (77)；

Figure 39 is the schematic perspective view of thick straight pin (76)；

Figure 40 is the schematic perspective view of thin straight pin (78).

6th kind of scheme is also that lawn machine is as described below by the embodiment of the worm screw zigzag tooth roller box according to holder pivots clutch:

Operation pedestrian pulls from walking control crank, by steel wire rope and pull bar, makes bracing wire action tighten up；Because it is described Bracing wire 68 be inserted in actively in the open slot 62f that the described other end according to support 62 is provided with, and with described extension spring 66 Closing in end connect, and the other end of described extension spring 66 i.e. hook end are connected with described dynamic arm-tie 69；And described moving Arm-tie 69 is fixedly connected by multiple screws 79 and gear housing 61, case lid 70 and big sealing gasket 73；Described according to support 62 Middle part be provided with macropore, and described main rear axle 64 movingly through described according to the macropore in the middle part of support 62, and bracing wire The upper surface that the end of outer layer is then provided with open slot 62f with the described other end according to support 62 contacts, so forming one Force, it is motionless relative to the fuselage of hay mower；Need not be original by internal conical surface promote Engaging-and-disengaging bearing pad 5 He Clutch block moves axially along main shaft 7, thus engages the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of traverse gear, But pulled the other end of described extension spring 66 i.e. hook end and described dynamic arm-tie 69 by steel wire rope, so that whole gear Case rotates according to back axis, moves simultaneously and make belt tension after making belt pulley, and make the small pulley of the output shaft of electromotor Power transmission comes and certainly walks.When operation pedestrian unclamps from walking control crank, by steel wire rope without pulling force, then it is allowed to reset, Belt is made to unclamp, and not from walking；It is to say, the lawn machine worm screw zigzag tooth roller box according to holder pivots clutch, by according to support 62 and the rotation of gear-box, make belt tension, and essence controls certainly walking of hay mower jointly.

Because the lawn machine worm screw zigzag tooth roller box according to holder pivots clutch, by according to support 62, fuselage determines frame 63, bracing wire 68, extension spring 66, dynamic arm-tie 69, auxiliary drop panel 65, main rear axle 64, gear housing 61, belt pulley 67, case lid 70, multiple screws 79, Big sealing gasket 73, is provided with the staggered gear 71 of 71f groove, staggered worm screw 72, rear bearing block 74, ring washer 75, thick straight pin 76, carefully Straight pin 78, spring 77, formed, again because it is characterized in that: the described one end bolt according to support 62 and fuselage determine frame 63 Fixing connection, described fuselage is determined frame 63 and is connected firmly mutually, so just having by the rear wall of another nut with hay mower fuselage Fixed pivot.Again because the described other end according to support 62 is provided with open slot 62f；Described bracing wire 68 is inserted in described actively The open slot 62f that is provided with of the other end according to support 62 in, and be connected with the closing in end of described extension spring 66, and described drawing The other end i.e. the hook end of spring 66 are connected with described dynamic arm-tie 69；Described dynamic arm-tie (69) passes through multiple screws 79 and tooth Wheel casing 61, case lid 70 and big sealing gasket 73 are fixedly connected；The described middle part according to support (62) is provided with macropore, and described Main rear axle 64 movingly through described according to the macropore in the middle part of support 62 so that bracing wire has had dynamic drawing a little.Again because of institute The other end according to support 62 stated is provided with open slot 62f, and referring to Figure 32, the feature of the open slot 62f that it is provided with is its opening Narrow slot has a turnover, minimum 1, or multiple；The inside of narrow slot is connected with circular hole；So being not only easy to described bracing wire 68 Steel wire rope can be inserted in the narrow slot of turnover from side and enter circular hole, even and if also making bracing wire during the mowing jolted 68 are difficult to slip；Again because the end of the outer layer of bracing wire and the described other end according to support 62 are provided with the upper table of open slot 62f Face contacts, but does not passes through, and has just had the fixing force of bracing wire crust；Again because the steel wire rope of described bracing wire 68 can pass through It, and be connected with the closing in end of described extension spring 66, and by the other end of described extension spring 66, namely hook end is with described Dynamic arm-tie 69 be connected, so have adjusted the harmony of pulling force, if not having extension spring, operating handle is very poor.

Because the feature that described fuselage determines frame 63 is, referring to Figure 33, having two angles flat board more than right angle, it is main Reason be the rear machine plate of hay mover be oblique；First flat board is provided with screwed hole or nut, and sets on another flat board There is slotted hole, so the assembling of favourable bolt and regulation.

The feature of described extension spring 66 is that its one end has closing in end, and putting bracing wire is that sidespin is entered；And described extension spring 66 The other end be the hook end of opening, can first hook in the hole of precession arm-tie 69.Because referring to Figure 34, the feature of described dynamic arm-tie 69 It is to which is provided with auxiliary drop panel 65, is additionally provided with arc and position, multiple hole, so favourable described dynamic arm-tie (69) is by multiple Screw 79 and gear housing 61, case lid 70 and the fixing connection of big sealing gasket 73；It is provided with because of described dynamic arm-tie 69 again Auxiliary drop panel 65 is provided with position, hole, so that be connected with the applicable position of fuselage by suitable spring and play auxiliary torr Role, depending on type, some type needs.

Because referring to Figure 35, described main rear axle 64 is provided with the hole hung down mutually, in order to lay thick straight pin 76, thin straight pin 78, and pocketed springs 77 between two pins；And the feature of described spring 77 is that its two ends are and tight and polish, institute so that Do not drop in installation.Again because, referring to Figure 28, the described staggered gear 71 being provided with 71f groove, be enclosed within be arranged on described The thick straight pin 76 on the hole hung down mutually on main rear axle 64, thin straight pin 78, and between two pins outside the spring 77 of suit Face；And be meshed with described staggered worm screw 72；The feature of the described staggered gear 71 being provided with 71f groove be its 71f groove at least Having a groove, or multiple-grooved, such as two grooves, particularly two grooves are to hang down mutually, and are small one and large one, in order to described thick cylinder Pin 76, thin straight pin 78, and the spring 77 of suit cooperates between two pins.Therefore so this have the advantage that the most still profit Use original parts, shorten gear 71 axial length (otherwise to lengthen one section gear outside and beat installing hole, On face of gear, punching can affect engagement), and two pin one spring tacit cooperations are of value to the buffering engagement of gear and prevent killing, especially It is the moment in clutch, moreover is also easy to assembling, pin need not be pounded, be inserted in.

Because referring to Figure 31, described gear housing 61 is provided with lays bearing position, in order to laying staggered worm screw 72；Described Gear housing 61 be additionally provided with lay main after the seat 61f of bearing housing 74, it is characterized in that the center of described seat 61f be not as Common gear-box is like that on die joint, but U-shaped, say, that its center is far deeper than die joint, it is sufficient to puts into and includes After full master after the rear bearing block 74 of the diameter of axle, also will not exceed die joint, also can just be easy to the big sealing gasket 73 of holding plane shape. So its usefulness is not only to overcome over, as shown in Figure 12 and Figure 14, axle center is caused cannot putting on die joint Plain seal pad and gluing had both been taken a lot of work difficult even drawback, and eliminated thin oil, and were coated with viscous crude on gear.It is the most former During because being with interior clutch, as long as electromotor opens, without wheel from walking or not from walking, being that belt just turns all, worm screw and gear are just Turning, heating is many certainly, and lubricating requirement is the highest.And change outer clutch into from interior clutch, i.e. hand over the worm screw according to holder pivots clutch Side set roller box, it is not or not time walking, even if electromotor opens, belt does not turns, and worm screw and gear do not turn, and heating is not certainly Many, lubricating requirement is the highest, and this is the big advantage changing outer clutch from interior clutch into, and even aforesaid 5th scheme hydraulic fluid port is to some Type all can save.

Because as further illustrated in figures 21-24, described belt pulley 67 is arranged on one end of staggered worm screw 72；And by belt quilt The small pulley of engine output end is dragged, so when belt does not works, is by belt housing and described according to support 62 phase Torr.Again because as shown in Figure 29 and Figure 35, one end lace of described staggered worm screw 72 is taken turns, and staggered worm screw 72 passes through axle Hold and be arranged in described gear housing 61, and engage with described staggered gear 71；It is characterized in that: described staggered worm screw 72 The end of the other end be cone, in order to the cone with case lid 70 cheats adaptation flexibly；Again because as shown in Figure 29 and Figure 25, case The feature of lid 70 is: described case lid 70 is provided with the big plane of periphery, and is provided with multiple hole in the big plane of periphery, so not only It is easy to be connected with big sealing gasket 73 and gear housing 61 by multiple screws 79；And it is provided with cone hole at the jut of case lid, Also it is easy to adaptive with the conical, flexible of the end of the other end of worm screw 72 of interlocking ground, saves a bearing.

Because as shown in Figure 36 and Figure 14, the feature of described rear bearing block 74 is the external form having D-shaped, and its endoporus is round , so being conducive to putting main rear axle, and outside is D-shaped, and institute is not so that being connected with big sealing gasket 73 and gear housing 61, and not It is the rear bearing block of wholecircle as shown in figure 14 again and difficulty sets level sealing gasket；As shown in figure 30, the spy of described big sealing gasket 73 Levying is to have big plane and multiple hole, flat, and institute is so that connecting with gear housing 61 and rear bearing block 74 and case lid 70.

But it is endless that the mankind pursue the perfection of invention, and things also tends to be divided into two both advantageous and disadvantageous.Institute The kinds of schemes stated is each has something to recommend him, can select by the requirement of the different type of each money and client.Although, the 6th kind of scheme is also known as For the lawn machine worm screw zigzag tooth roller box according to holder pivots clutch, there is it not want the clutch in gear speed-reducing clutch, subtract The advantage of few heating, but according to the scheme of holder pivots clutch, handy at some type, but on some type, then dislike volume mistake Greatly.So, the powder metallurgy bevel gear change speed gear box that the 7th kind of scheme is also known as lawn machine inner conical drogue clutch is the most necessary. If with powder metallurgy umbrella tooth, gear ratio is little and is not durable, but still has way to solve, as with subtracting to have a kind of suggestion to think The when young number of teeth and the method for appropriate heat treatment.Though there being several scheme available on several types, but, certain several has been determined Type and a large amount of hay mover gone into operation, but can not install, and its reason is that the distance of the Pulley shaft of decelerator and main rear axle is in level The projection in face is 24mm；And with straight powder metallurgy umbrella tooth, then its projection is to tap into zero.If with straight powder metallurgy umbrella tooth Wheel-speed regulating change box, it is necessary to change big casing, or mobile rear axle away from, or make on the rear wall of big casing and can get out of the way gear-box Position, but that is the most cumbersome.For Pulley shaft and the projector distance at horizontal plane of main rear axle of constant decelerator, also In order to optimize meshing parameter and the geometrical factor of secondary gear spiral bevel gear further, the 8th kind of scheme is also known as lawn machine Just arise at the historic moment with the Ao Likang cycloid tooth hypoid gear reduction box of inner conical drogue clutch.

Because the present invention is to improve in the first seven scheme planted, Gu for convenience, first states the 7th kind and put off until some time later the 8th kind Scheme.

In order to aspire after perfection, improve the rear wheel drive gear deceleration clutch of the traverse gear of general hay mower further Arrangement of clutch in device, reduces the circular cone by clutch block side and carrys out clutch, produces frictional heat, disappear between taper seat in engaging process Wasted work rate, causes the generation of the damage phenomenon that intrinsic pressure ring washer ruptures；Simultaneously in order to lower the cost of gear-box, the present invention is many On the basis of secondary improvement, it is provided that a kind of no-load voltage ratio is big, and the method that cost is low compared with worm screw staggered gear, utilize powder machine die mould rather than Mach method, the powder metallurgy bevel gear setting the inner conical drogue clutch of arrangement of clutch, also known as lawn machine in bevel gear becomes Speed case.

7th kind of scheme is also invention, and it is adopted the technical scheme that:

The lawn machine powder metallurgy bevel gear change speed gear box of inner conical drogue clutch, i.e. self-moving lawn mower rear wheel drive Gear clutch speed reducer in arrangement of clutch and bevel gear match, referring to Figure 41 to Figure 48, utilize original gear-box And multiple part, main change is to change former worm screw to interlock the bevel gear and cone pinion that helical gear is band clutch cone, and changes Gear case lid, and bracing wire torque arm；It is to say, the powder metallurgy bevel gear speed change of described lawn machine inner conical drogue clutch Case, the bevel gear mainly bored by band clutch (82), cone pinion (81), gear case lid (83), and bracing wire torque arm (84) institute Composition, is characterized in that: the inside of the bevel gear (82) of described band clutch cone is provided with mesopore and the taper cut out, in order to its mesopore Penetrate the rear main shaft of hay mower, be also easy to its taper cut out adaptive with clutch block simultaneously；The umbrella of described band clutch cone The outside of gear (82) is provided with bevel gear；Described cone pinion (81) engages with bevel gear (82), the axle of cone pinion (81) End is connected with belt pulley, and the axle of cone pinion (81) is arranged on described gear case lid (83) by bearing；Described The side of installation position is held in the bearing installation position of gear case lid (83) at primitive axis, is externally the boss slightly in 8-shaped, from interior Portion sees it is slightly concave station in 8-shaped；And bracing wire torque arm (84) is contained in the outside of described gear case lid (83), in order to by drawing Line makes bracing wire torque arm (84) rotate and drives clutch cone and clutch.The plate of described bracing wire torque arm (84) is provided with slotted hole, with Just match with bent axle or shift fork；The short axle in upper end of shift fork is also provided with double flute and screw thread to lay torque arm and being grasped by bracing wire Vertical；In the hope of making the existing desired group of power of shift fork rotate freely at certain angle again.Upper shift fork head as described in third program and Set aside jaw to be symmetrical and protrude, original one group of point dial point, make original list dial torsion for two that are improved to equalize Moment has improved, and making clutch stir earlier above has improvement, makes pad be hardly damaged, and adds the improvement of other associated components, can The life-span of continuity gear clutch speed reducer；Because the inside of the bevel gear (82) of described band clutch cone is provided with mesopore and cuts out Taper, is beneficial to its mesopore and can penetrate the rear main shaft of hay mower, be also easy to its taper cut out adaptive with clutch block simultaneously； Its taper cut out or be provided with taper, or it is provided with the inwall of dress clutch block and multiple kick, i.e. with associated clutch block Wave mode face that the skew back taper seat of equipped gear internal and sinusoidal wave form match or other can be with waves clutch block clutch Face such as multiple spot projection envelope etc..The plate end of described bracing wire torque arm (84) is provided with bracing wire side plate, and draws in described bracing wire Another plate end of arm (84) is provided with the aperture hanging little returning pull-spring.The bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with Feature be to which is provided with open slot, particularly described open slot be many foldings, i.e. open slot be many foldings, minimum of one Folding, or multiple turn round, the steel wire rope pendant in order to bracing wire enters and is difficult to break off relations.

The bevel gear (82) of described band clutch cone removed the taper being internally provided with mesopore He cutting out, in order to penetrate lawn The rear main shaft of hay mover, is provided with the hole hung down mutually, to lay thick straight pin (76), thin straight pin (78) on rear main shaft simultaneously, and Spring (77)；Also its taper cut out it is easy to adaptive with clutch block；The outside of the bevel gear (82) of described band clutch cone is provided with Bevel gear；In order to increase gear ratio, suitably decrease the number of teeth of cone pinion；The number of teeth of described cone pinion (81) is 13 Within tooth, or 3-9 tooth, preferably 6 teeth.Although root can be occurred to cut if machining the fewest number of teeth, but it is need not now Gear hobbing, gear shaping, mill teeth, the mach method such as gear-shaping is directly processed gear part, but is first made inner mold by CNC or mould work Chamber mould, then powder is put into pressing formation on press, re-sintering, i.e. the method for powder metallurgy manufactures cone pinion (81) and takes away Close the bevel gear (82) of cone, it is therefore prevented that the mach steel part of strength ratio of powder metallurgical gear has declined, but now with Requiring on the highest hay mover；The speed of travel of hay mower, at one meter per second, the most only 3.6 kilometers, is walked Power consumption is less than one kilowatt；Through actual measurement, powder metallurgical gear has met the walk test requirement of 120 hours of hay mower. Generally hay mower, cuts the grass on a lawn every year the most several times, cuts the grass on a lawn with regard to several hours every time, therefore available several years.And several years with Already change new for old by consumption habit afterwards.Described cone pinion (81) engages with bevel gear (82), and referred to as secondary transmission is old Type no-load voltage ratio is 3.5, and new architecture no-load voltage ratio is 5, it is sufficient to available.And the axle head of cone pinion (81) is connected with belt pulley, belt pulley Being connected with the small belt pulley of engine output shaft, referred to as primary transmission, general no-load voltage ratio is less than 2；And the band list at main rear axle two ends To the transmission of the walking gear of freewheel clutch Yu trailing wheel internal gear, referred to as three grades transmissions.

For Pulley shaft and the projector distance at horizontal plane of main rear axle of constant decelerator, also for optimizing further The meshing parameter of secondary gear spiral bevel gear and geometrical factor, the 8th kind of scheme is also known as lawn machine inner conical drogue clutch Ao Likang cycloid tooth hypoid gear reduction box just arises at the historic moment.

The invention has the beneficial effects as follows: the design utilize existing speed-reducing clutch shell and major part part, only change from The minority parts such as conjunction gear and therewith phase accessory, by bevel gear scheme just handy powder metallurgy pressing method, if using worm screw zigzag tooth Take turns the most handy pressing, it is therefore prevented that root is cut, and cost has declined, particularly meet the installation requirement of former mowing casing, also carry High transmission meshing parameter and geometrical factor.

Below in conjunction with the accompanying drawings with embodiment to the 7th kind of scheme also be invention be described further.

Figure 41 is the three-dimensional signal of the powder metallurgy bevel gear change speed gear box of the 7th kind of i.e. lawn machine inner conical drogue clutch of scheme Figure；

Figure 42 is that the inside of the powder metallurgy bevel gear change speed gear box of the 7th kind of i.e. lawn machine inner conical drogue clutch of scheme is three-dimensional Schematic diagram；

Figure 43 is the schematic diagram of the bevel gear (82) of the band clutch cone of the 7th kind of scheme；

Figure 44 is the schematic diagram of the cone pinion (81) of the 7th kind of scheme；

Figure 45 be the 7th kind of scheme band clutch cone bevel gear (82) rear to schematic perspective view；

Figure 46 is the cross-sectional schematic of the bevel gear (82) of the band clutch cone of the 7th kind of scheme；

Figure 47 is the upper gear box of the powder metallurgy bevel gear change speed gear box of the 7th kind of i.e. lawn machine inner conical drogue clutch of scheme The schematic perspective view of lid (83)；

Figure 48 is the bracing wire torque arm of the powder metallurgy bevel gear change speed gear box of the 7th kind of i.e. lawn machine inner conical drogue clutch of scheme (84) schematic perspective view；

Figure 49 is the Ao Likang cycloid tooth hypoid gear reduction box of the 8th kind of i.e. lawn machine inner conical drogue clutch of scheme The schematic perspective view removing gear case lid；

Figure 50 is the Ao Likang cycloid tooth hypoid gear reduction box of the 8th kind of i.e. lawn machine inner conical drogue clutch of scheme The schematic perspective view removing gear case lid；

As shown in Figure 41 to Figure 50,

In figure: 81. is cone pinion (81)；

82. is the bevel gear (82) of band clutch cone；

83. is the gear case lid (83) of powder metallurgy bevel gear change speed gear box；

84. is bracing wire torque arm (84)；

85. is little Ao Likang bevel gear (85)；

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

87. is with the big Ao Likang bevel gear (87) of inner conical drogue clutch；

Operation pedestrian pulls from walking control crank, pulls described bracing wire torque arm 84 by steel wire rope, makes clutch block edge Moving axially and engage, the bevel gear 82 i.e. allowing band clutch bore engages with rear main shaft, and power passes through belt primary transmission, makes described Cone pinion 81 rotate, and cone pinion 81 is arranged on the gear of described powder metallurgy bevel gear change speed gear box by bearing On case lid 83, thus secondary transmission made by the bevel gear 82 driving band clutch to bore, then makes hay mower from walking by three grades of transmissions.

The clutch gear of the arrangement of clutch in the rear wheel drive gear speed-reducing clutch of the traverse gear of clutch, not only by from The circular cone closing gear medial surface engages, or as improving, with the particularly sinusoidal wave inwall of the i.e. waveform having deformation and many Individual little micro-protuberance assists joint.When operation pedestrian unclamps from walking control crank, by steel wire rope and driving lever elastic reset, make Clutch block is axially displaced to leave clutch gear.Due to inwall be round and smooth sinusoidal wave form than dental inlay clutch block be more easy to from Open.

Because the lawn machine powder metallurgy bevel gear change speed gear box of inner conical drogue clutch, i.e. self-moving lawn mower trailing wheel Arrangement of clutch and bevel gear in the gear clutch speed reducer driven match, and utilize original gear-box and multiple part, Main change is to change former worm screw to interlock the bevel gear and cone pinion that helical gear is band clutch cone, and has changed gear case lid, And bracing wire torque arm；It is to say, the powder metallurgy bevel gear change speed gear box of described lawn machine inner conical drogue clutch, mainly by carrying The bevel gear 82 of clutch cone, cone pinion 81, gear case lid 83, and bracing wire torque arm 84 formed, again because described band The inside of the bevel gear 82 of clutch cone is provided with mesopore and the taper cut out, this taper or a circular cone, or two different angles The circular cone of degree, or waveform, the most sine-shaped, in order to regulate and control clutch degree, select according to different types.Tooth should be easy to Wheel mesopore penetrates the rear main shaft of hay mower, is also easy to its taper cut out adaptive with clutch block simultaneously.Again due to described The outside of the bevel gear 82 with clutch cone is provided with bevel gear；Described cone pinion 81 engages with bevel gear 82, cone pinion 81 Axle head be connected with belt pulley, and the axle of cone pinion 81 is arranged on described gear case lid 83 by bearing；Described The side of installation position is held in the bearing installation position of gear case lid 83 at primitive axis, is externally the boss slightly in 8-shaped, from inside See it is slightly concave station in 8-shaped, buried bearing；And bracing wire torque arm 84 is contained in the outside of described gear case lid 83, in order to logical Cross bracing wire to make bracing wire torque arm 84 rotate and drive clutch cone and clutch.Because the plate of described bracing wire torque arm 84 being provided with oval Hole, therefore be easy to match with bent axle or shift fork；The short axle in upper end of shift fork is also provided with double flute and screw thread to lay torque arm and by drawing Line is handled；In the hope of making the existing desired group of power of shift fork rotate freely at certain angle again.As described in third program upper group Jaw is symmetrical with setting aside jaw and protrudes, original one group of point dial points, make original for two that are improved to equalize Single group of torsional moment has improved, and making clutch stir earlier above has improvement, makes pad be hardly damaged, and adds changing of other associated components Enter, the life-span of gear clutch speed reducer can be continued；Again because the inside of the bevel gear 82 of described band clutch cone be provided with mesopore and The taper cut out, therefore be beneficial to its mesopore and can penetrate the rear main shaft of hay mower, also it is easy to its taper cut out and clutch simultaneously Block or waveform block are adaptive.It is provided with bevel gear again because of the outside of the bevel gear 82 of described band clutch cone；Described cone pinion 81 Engaging with bevel gear 82, the axle head of cone pinion 81 is connected with belt pulley, and the axle of cone pinion 81 is arranged on institute by bearing On the gear case lid 83 stated；The side of installation position is held in the bearing installation position of described gear case lid 83 at primitive axis, from outside See it is slightly boss in 8-shaped, be the concave station slightly in 8-shaped in terms of inside, buried bearing；And bracing wire torque arm 84 is contained in described The outside of gear case lid 83, in order to make bracing wire torque arm 84 rotate by bracing wire and drive clutch cone and clutch.Because it is described The plate of bracing wire torque arm 84 is provided with slotted hole, therefore is easy to match with bent axle or shift fork；The short axle in upper end of shift fork be also provided with double flute and Screw thread is to lay torque arm and being handled by bracing wire；In the hope of making the existing desired group of power of shift fork rotate certainly at certain angle again As.Upper shift fork head as described in third program is symmetrical with setting aside jaw and protrudes, and is dialled point by original one and is improved to Two of equilibrium dial point, make original list dial torsional moment and have improved, and making clutch stir earlier above has improvement, makes pad not rapid wear Bad, add the improvement of other associated components, the life-span of gear clutch speed reducer can be continued；Again because of described band clutch cone The inside of bevel gear 82 is provided with mesopore and the taper cut out, and is beneficial to its mesopore and can penetrate rear main shaft and the cylinder of hay mower Pin and spring, be also easy to its taper cut out adaptive with clutch block simultaneously；Its taper cut out or be provided with taper, or be provided with The inwall of dress clutch block and multiple kick, the skew back taper seat of i.e. equipped with associated clutch block gear internal and sine wave Wave mode face that shape matches or other can be with the face of waves clutch block clutch such as multiple spot projection envelope etc..Described bracing wire is drawn The plate end of arm 84 is provided with bracing wire side plate, and is provided with the aperture hanging little returning pull-spring at another plate end of described bracing wire torque arm 84. The feature of the bracing wire side plate that the plate end of described bracing wire torque arm 84 is provided with is to which is provided with open slot, particularly described open slot Be many foldings, i.e. open slot be many foldings, minimum of one is rolled over, or multiple turns round, thus the steel wire rope pendant of beneficially bracing wire enter and not Easily break off relations, because the end of the steel wire rope of bracing wire has big envelope block pendant to enter.

Because the bevel gear 82 of described band clutch cone removed the taper being internally provided with mesopore He cutting out, institute is so that wearing Enter the rear main shaft of hay mower；Again owing to being provided with the hole hung down mutually on rear main shaft simultaneously, therefore thick straight pin 76 can be laid, carefully justify Pin 78, and spring 77；Also its taper cut out it is easy to adaptive with clutch block；The outside of the bevel gear 82 of described band clutch cone It is provided with bevel gear；In order to increase gear ratio, suitably decrease the number of teeth of cone pinion；The number of teeth of described cone pinion 81 exists Within 13 teeth, or 3-9 tooth, preferably 6 teeth, and gear wheel is 30 teeth.Although, can occur if machining the fewest number of teeth Root is cut, but is that the mach method such as gear-shaping is directly processed gear part, but used CNC without gear hobbing, gear shaping, mill teeth now Or mould work first makes interior swaging die, then powder is put into pressing formation on press, re-sinters, i.e. the method for powder metallurgy manufactures Cone pinion 81 and the bevel gear 82 of band clutch cone, it is therefore prevented that root is cut.More than machining by class's yield of powder metallurgy process, become This has declined.The mach steel part of strength ratio of powder metallurgical gear has declined, but now with require the highest Hay mover on；The speed of travel of hay mower is at one meter per second, and the most only 3.6 kilometers, walking power consumption is less than one Kilowatt；Through actual measurement, powder metallurgical gear has met the walk test requirement of 120 hours of hay mower；Test is by different machines Type such as 16 ", 18 ", 20 " and, 22 " and have any different.But, to certain several hay mover shaped and go into operation in a large number, some sides Case but can not be installed, and its reason is the Pulley shaft of decelerator and the distance of main rear axle is certain in the projection of horizontal plane；And With straight powder metallurgy umbrella tooth, then its projection is close to zero.If with straight powder metallurgy bevel gear change speed gear box, it is necessary to change Dynamic big casing, or mobile rear axle away from, or on the rear wall of big casing, make the position that can get out of the way gear-box, but that all compare Trouble, now scheme is all right is mounted with, because decelerator upper casing 86 directly can fill with the 8th kind.Again because of with the little gear of Ao Likang 85 With gear wheel 87, therefore optimize meshing parameter and the geometrical factor of secondary gear spiral bevel gear further.But lawn machine The improvement of gear-box and innovation are endless.

Summary of the invention

There is the great undertaking of the clutch slider of equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box Be entirety be provided with in the middle flange (105) and behind end be provided with rear driver plate (1a7), because being the bad side of warm extrusion powder metallurgy Take out, flange (105) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate that end is provided with behind (1a7) opening that multiple complementation is staggered it is equipped with, the most conveniently stripped, stride across warm extrusion powder metallurgy and can not make double-deck flange With the difficulty of driver plate, facilitate again and enter shift fork at double-deck flange and driver plate plug-in mounting therebetween so that left and right the most capable i.e. from conjunction The power of shift fork can be obtained, fundamentally solve clutch and do not slip up.Clutch slider sets along end circumference with the end of clutch block Being shaped with arc wave and straight ripple on some 3-18 the clutch cone having logatithmic spiral, each clutch cone is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that the master of clutch slider Yu clutch block The contour curve of form is a section of logatithmic spiral, in order to closer to higher mathematics when having a straight ripple clutch of loaarithmic curve arc wave The most equal scientific basis of pressure angle and more steadily and more reliable, achieve beyond thought effect, its usefulness is Self-evident.

Having equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, described gear-box is that lawn machine is used Gear-box, its output main shaft of described gear-box is exactly from walking the main rear axle of lawn machine, the axle head of the little gear of described gear-box with Big belt pulley is connected, and described big belt pulley is connected with the small belt pulley of power machine output shaft, referred to as primary transmission；Described little gear Engage with gear wheel, referred to as secondary transmission；In the walking gear of the band mono-directional overrun clutch at described main rear axle two ends and trailing wheel The transmission of gear, referred to as three grades transmissions；Described gear wheel is coaxial with described main rear axle and can be sleeved on described main rear axle rotationally On, it being provided with clutch block in described gear wheel, described main rear axle is also set with clutch slider, described clutch slider is provided with clutch Structure, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, and described pin is placed in described In radial hole on main rear axle vertical with the axis of described main rear axle, one end of described clutch structure is provided with clutch motion block, with Just operator pull and unclamp lawn machine in time walking handle and drive bracing wire, the bracing wire in bracing wire and described gear-box is drawn Arm, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, the combination of gear case lid and described canine tooth By described gear wheel with described under the common effect of the clutch slider being set with on the clutch block being provided with in wheel and described main rear axle Driving and idle running between main rear axle and implement from walking certainly the walking and from not walking of lawn machine；The axle of described little gear is pacified by bearing It is contained on described gear case lid (83)；The bearing installation position of described gear case lid (83) is at lawn machine gear-box The side of bearing installation position；In the outside of described gear case lid equipped with movable bracing wire torque arm (84), described bracing wire is drawn The plate end of arm (84) is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm (84) and hangs the little of little returning pull-spring Hole；The bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with is provided with open slot, is many foldings, is beneficial to the steel of bracing wire Cord pendant enters and is difficult to break off relations, and is easy to make bracing wire torque arm (84) rotate by bracing wire and drive arrangement of clutch clutch；Described Bracing wire torque arm (84) plate in be provided with slotted hole, in order to match with shift fork；The short axle in upper end of described shift fork be also provided with double flute and Screw thread is to lay torque arm and being handled by bracing wire；The upper shift fork head of described shift fork is symmetrical with setting aside jaw and protrudes , this shift fork includes that two of equilibrium dial point；The described inside containing the large bevel gear of inner conical drogue clutch is provided with mesopore and hollows out Taper, in order to mesopore penetrates the rear main shaft of hay mower, it is simple to the taper cut out and clutch block or waveform block are adaptive, simultaneously Also it is easy to its taper hollowed out and is provided with the inwall of dress clutch block；Its taper hollowed out or be provided with taper, or it is provided with dress clutch The inwall of block and multiple kick；Rear main shaft is provided with the hole hung down mutually, therefore thick straight pin (76), thin straight pin can be laid , and described stage clip is exactly spring (77) (78)；The little gear of described gear-box, for increasing gear ratio, suitably decreases small bevel gear The number of teeth of wheel；The number of teeth of described cone pinion is within 11 tooth, and large bevel gear is 28 teeth；First make by CNC or mould work Interior swaging die, then powder is put into pressing formation on press, re-sintering, i.e. the method for powder metallurgy manufactures cone pinion and containing interior The large bevel gear of tapered sleeve clutch, it is therefore prevented that root is cut；The decelerator upper casing (86) of described gear case lid directly can fill；Described umbellule The little gear of gear Ao Likang, described large bevel gear Ao Likang gear wheel, optimize nibbling of secondary gear spiral bevel gear Close parameter and geometrical factor, to constitute cycloid tooth hypoid gear；By steel wire rope and pull bar, make described lawn machine gear The short axle (9c) of the upper and lower side that case also known as contains the lower house (8c) of the gear speed-reducing clutch housing of multiple parts rotates certain Angle, and interlock upper shift fork head (1c) and set aside jaw (2c) by arched arm (3c), promotion slip pulling sleeve (4c) and promote from Close bearing shim (5c) and clutch block is axially moveable, thus engage in the rear wheel drive gear speed-reducing clutch of traverse gear The clutch gear of arrangement of clutch is carried out from walking；Described arrangement of clutch is sliding containing hay mower gear clutch speed reducer single side pushing Set, by sliding sleeve (41d), single group of limit (42d), inner cone flange (43d) is formed；On the sliding sleeve (41d) of described single side pushing sliding sleeve It is provided with single group of limit (42d)；List at described single side pushing sliding sleeve is dialled and is provided with inner cone flange (43d) on limit (42d)；And described list While the sliding sleeve (41d) dialling sliding sleeve (4d) is provided with discoid list dials limit (42d)；The medial surface of inner cone flange (43d) is circular cone Face, it is not more than 30 degree with axial angle；Owing to described single side pushing sliding sleeve (4d) is suit and slides on main shaft, therefore institute The axis (7d) of 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 described single side pushing sliding sleeve (4d) It is movably installed with shift fork；Shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, i.e. by institute Inner cone flange (43d) the contact thrust bearing shim on limit (42d) dialled by the list stated, so that arrangement of clutch work；Described is monolateral Dialling the list of sliding sleeve (4d), to dial limit (42d) in the form of annular discs；Described list dials the back side of the disk on limit (42d) and described inner cone flange (43d) thrust bearing shim can all be contacted；The short axle in upper end of shift fork is additionally provided with double flute and screw thread to lay pull bar and by drawing Line is handled, so that the existing desired group of power of shift fork rotates freely at certain angle again；Hay mower gear-box hydraulic fluid port, The hydraulic fluid port that i.e. side of gear reduction unit is placed, by the side platform of the lower house side being located at rear wheel drive gear speed-reducing clutch (4e), it is located at the screwed hole (2e) of decelerator side and is located at the lower section of screwed hole and the breach of the bottom surface in housing (3e) being formed, the axis of described screwed hole (2e) is not orthogonal to bottom surface；The demoulding is i.e. without side core-pulling for convenience, puts The side platform (4e) in spiral shell mosquito hole is that arc component big with top is joined directly together rather than there is indentation centre；Described screwed hole For being screwed into hydraulic fluid port screw, therefore the external diameter of threaded line is made to press close to end inner face as far as possible, in order to few retained oil during draining；Described The breach (3e) being located at the lower section of screwed hole and the bottom surface in housing is rectangle, arranges for preventing screw from not touching 's；Lawn machine gear-box, by according to support (62), fuselage determines frame (63), bracing wire (68), extension spring (66), dynamic arm-tie (69), auxiliary torr Plate (65), main rear axle (64), gear housing (61), belt pulley (67), case lid (70), multiple screws (79), big sealing gasket (73), It is provided with the staggered gear (71) of groove (71f), staggered worm screw (72), rear bearing block (74), ring washer (75), thick straight pin (76), Thin straight pin (78), spring (77), formed, it is fixing even that the described one end bolt according to support (62) and fuselage determine frame (63) Connecing, described fuselage is determined frame (63) and is connected firmly mutually by the rear wall of another nut and hay mower fuselage, and described according to support (62) the other end is provided with open slot (62f)；The described other end according to support (62) is inserted in described bracing wire (68) actively In the open slot (62f) being provided with, and it is connected with the closing in end of described extension spring (66), and the other end of described extension spring (66) Namely hook end is connected with described dynamic arm-tie (69)；Described dynamic arm-tie (69) passes through multiple screws (79) and gear housing (61), case lid (70) and big sealing gasket (73) are fixedly connected；The described middle part according to support (62) is provided with macropore, and described Main rear axle (64) is movingly through the described macropore according to support (62) middle part；The described other end according to support (62) is provided with Open slot (62f), at least turnover of the narrow slot of its open slot being provided with (62f) its opening；The inside of narrow slot and circular hole phase Even；So that the steel wire rope of described bracing wire (68) can be inserted in the narrow slot of turnover from side and enter circular hole；And the outer layer of bracing wire The end upper surface that is then provided with open slot (62f) with the described other end according to support (62) contact, but must not pass through；Only The steel wire rope having described bracing wire (68) can pass through, and is connected with the closing in end of described extension spring (66), and by described The other end i.e. the hook end of extension spring (66) are connected with described dynamic arm-tie (69)；Described fuselage determines frame (63) two angles More than the flat board at right angle, first flat board is provided with screwed hole or nut, and is provided with slotted hole on another flat board, in order to spiral shell The assembling of bolt and regulation；There is closing in end described extension spring (66) its one end, and the other end of described extension spring (66) is the hook of opening End；Described dynamic arm-tie (69) which is provided with auxiliary drop panel (65), is additionally provided with arc and position, multiple hole, in order to dynamic arm-tie (69) It is fixedly connected with gear housing (61), case lid (70) and big sealing gasket (73) by multiple screws (79)；And described dynamic draw The auxiliary drop panel (65) that plate (69) is provided with, which is provided with position, hole, in order to by suitable spring with the applicable position of fuselage It is connected and plays auxiliary torr role, depending on type；Described main rear axle (64) is provided with the hole hung down mutually, in order to lay thick Straight pin (76), thin straight pin (78), and pocketed springs (77) between two pins；Described spring (77) is also known as stage clip, its Two ends are and tight and polish；The described staggered gear (71) being provided with groove (71f), is enclosed within and is arranged on described main rear axle (64) the thick straight pin (76) on the hole hung down mutually on, thin straight pin (78), and the spring (77) of suit between two pins Outside；And be meshed with described staggered worm screw (72)；Described staggered gear (71) its groove (71f) being provided with groove (71f) is extremely A rare groove；Described gear housing (61) is provided with lays bearing position, is also known as little gear in order to laying staggered worm screw (72)；Described Gear housing (61) be additionally provided with lay main after the seat (61f) of bearing housing (74), the tooth at the center at described seat (61f) Roller box is U-shaped, and its center is far deeper than die joint, it is sufficient to put into include complete main after the diameter of axle rear bearing block (74) after, will not exceed Die joint, it is simple to the big sealing gasket (73) of holding plane shape；Described belt pulley (67) is arranged on one end of staggered worm screw (72)； And dragged containing the small pulley of engine output end by engine by belt；The one termination skin of described staggered worm screw (72) Belt wheel；And staggered worm screw (72) is arranged in described gear housing (61) by bearing, and with described staggered gear (71) Engagement；The end of the other end of described staggered worm screw (72) is cone, in order to the cone with case lid (70) cheats adaptation flexibly； One end lace wheel of the described the least gear of staggered worm screw (72), its mode connected has 2 kinds；1st kind is to use pin；Described Pin become with steel spring plate circle, and broad in the middle and two is smaller；Staggered worm screw (72) is first installed and arrives gear-box, then install Belt pulley also squeezes into pin；2nd kind of connected mode is with key and at axle head tapping；The case lid of the casing of lawn machine gear-box (70) it is provided with the big plane of periphery, and is provided with multiple hole in the big plane of periphery, in order to sealed with big by multiple screws (79) Pad (73) and gear housing (61) are connected；And it is provided with cone hole at the jut of case lid, in order to another with staggered worm screw (72) The conical, flexible ground of the end of one end is adaptive；Described rear bearing block (74) is the external form having D-shaped, and its endoporus is round, profit In placing main rear axle, in order to be connected with big sealing gasket (73) and gear housing (61), and be no longer the rear bearing block of wholecircle；Described Big sealing gasket (73) be to have big plane and multiple hole, in order to gear housing (61) and rear bearing block (74) and case lid (70) phase Connect；The short axle in upper end of shift fork is provided with double flute and screw thread to lay torque arm and being handled by bracing wire；In the hope of making shift fork the most Desired group of power rotates freely at certain angle again；The upper shift fork head of described shift fork is symmetrical with setting aside jaw and protrudes , dialled point by original one and be improved to two groups of points of equilibrium, make original list dial torsional moment and improved, make clutch stir There is improvement earlier above, make pad be hardly damaged, add the improvement of other associated components, the life-span of continuity gear clutch；Described have The feature of equal pressure loaarithmic curve arc wave straight ripple remodeling injection lawn machine gear-box is: snail used by the little gear of described gear-box The little staggered gear of rod-type, the axle head of the little staggered gear of described Worm type is connected with big belt pulley, described big belt pulley and engine The small belt pulley of output shaft is connected, and it is primary transmission, and no-load voltage ratio is at 2.1-4；Described little gear engages with gear wheel, referred to as two grades Transmission；The big staggered gear of the gear wheel of described gear-box, it is warm extrusion powder metallurgy；Described little staggered gear and warm extrusion The big staggered gear of powder metallurgy engages, and it is secondary transmission, and no-load voltage ratio is at 5.1-8；Described main rear axle two ends band mono-directional overrun from The warm extrusion powder metallurgy walking gear of clutch and trailing wheel plastic annular wheel transmission, it is three grades of transmissions, and no-load voltage ratio is at 2.1-4；Described Big staggered gear is coaxial with described main rear axle and movable set is on described main rear axle, and the gear of described gear wheel is big staggered Gear, it is warm extrusion powder metallurgy processing and manufacturing；Being provided with clutch block in described gear wheel, it is also to cooperate with containing equal pressure pair The big staggered gear of clutch in the straight ripple of number curve arc wave, described gear wheel is coaxial with described main rear axle and can be set with rotationally On described main rear axle；Also being set with clutch slider on described main rear axle, described clutch slider is provided with equal pressure loaarithmic curve, That is described clutch slider is the clutch slider having the equal pressure loaarithmic curve straight ripple of arc wave, the inside of described clutch structure Containing the chute that can slide along described main rear axle along with pin, described pin be placed in the radial hole on described main rear axle and with institute The axis stating main rear axle is vertical, and one end of described clutch structure is provided with clutch motion block, in order to pulls operator and unclamps lawn Machine in time walking handle and drive bracing wire, at the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust axis Hold, pad, rolling bearing, oiliness bearing, the clutch block being provided with in the combination of gear case lid and described gear wheel and described master On rear axle under the common effect of the clutch slider of suit, carry out secondary transmission and by between described gear wheel and described main rear axle Driving and idle running and implement from walking certainly the walking and from not walking of lawn machine；Described have the equal pressure loaarithmic curve straight ripple of arc wave to change Type injection lawn machine gear-box is further characterized in that, described gear-box is remodeling injection casing, and operator does not grab oneself of lawn machine Walk handle and without when straining at line, because stage clip is contained in the outside of clutch slider, away from gear wheel rather than at described gear wheel And between clutch slider, normality bracing wire pine during hands pine, and bracing wire torque arm makes shift fork outwards under extension spring effect and push down stage clip and Making clutch slider separate with gear wheel, clutch slider and main rear axle depart from active force, and this is for from walking state；Hands as operator Tension lawn machine in time walking handle and band strains at line because stage clip is contained in the outside of clutch slider, away from gear wheel rather than Between described gear wheel and clutch slider, close state bracing wire time hand-tight tightly, and bracing wire torque arm make shift fork inside under extension spring effect, Not pushing down stage clip, stage clip promotes clutch slider to make clutch slider engage with the clutch block being provided with in gear wheel effectively, and clutch is sliding Block and main rear axle relate to active force, thus realize primary transmission, secondary transmission and three grades of transmissions, and this is for from walking state；Described Be provided with in having clutch slider and the gear wheel of equal pressure loaarithmic curve arc wave straight ripple remodeling injection lawn machine gear-box from Closing block engagement to be further characterized in that, described clutch slider is provided with multiple smooth curve with the end of clutch block along end circumference and is connected Cone clutch cone, it is slightly conical, and the bus of the curved surface of the taper seat of its cone is to have pressure angle phase everywhere It is also referred to as logatithmic spiral etc. the equiangular spiral of characteristic；So described clutch slider and the clutch block in gear wheel are by isogonism spiral shell Smooth co-operation is easy in line face；In technique scheme, take a section of main body of described clutch slider,

Set up differential equation d ρ/d θ=k ρ:

If polar equation ρ=ρ (θ), because wanting pressure angle λ the most equal, therefore tg λ=constant, make tg λ=k,

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.

Solve d ρ/d θ=k ρ, both sides integration after variables separation:

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

Ln ρ=k θ+C.

I.e. exponential form:

Use PRO/ENGINEER WILDFIRE mapping software, newly set working directory, newly-built part,

Set up parameter (PARAMETER) 1:C real number (real number), default assignment.

Set up parameter (PARAMETER) 2:N integer (integer), default assignment.

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

Loaarithmic curve:

Z=0

X=10*t

Y=log (10*t+0.0001)

Make loaarithmic curve；

Followed by, using and rotate, merge, hypostazation etc. instructs, and assembles with workpiece and merge, and can model；

Modeled with described equation and PRO/ENGINEER WILDFIRE again, inputted CNC machining center, used CIMATRO or MASTCAM, the punching block of warm extrusion powder die-casting processed, or assist with milling machine, planer and electrical spark working work；Electricity consumption fire Flower adds man-hour, with described equation input CNC machining center, processes, and will first make tungsten copper electrode, then makes and first quench The hardest punching block clutch core rod；Process big staggered gear, then first to make tungsten copper electrode with gear-hobbing machine, then the tungsten copper electricity rolled out The swing pinion part of pole, immersion spirit of vinegar makes the little several silks of described swing pinion, and so that precautions averts perils, follow-up electric machining is offset on ground Cydariform discharge in the gap of tooth root, make warm extrusion powder metallurgical gear punching block with the lathe having three-dimensional rotation head；Machine again Workpiece, makes on multiple clutch cones having logatithmic spiral that described clutch slider and the end of clutch block are provided with along end circumference Arc wave and straight ripple, each described clutch cone, successively by four kinds of morphologic arrangement, is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that at described clutch slider and clutch block along end circumference The contour curve of the dominant shape state of the multiple clutches cone being provided with is a section that logatithmic spiral substantially is also known as equiangular spiral, then presses successively Each local of described four kinds of morphologic arrangement is carved；On the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) Compactly radially the most laterally it is carved with multiple fluctuating great waves stricture of vagina, also known as arc wave；And do not carve on described top arc convex (1a2) Stricture of vagina, but to make its push up the convex approximation center of circle of arc by the straight ripple of described descending closer to；Again in the gradient of the straight ripple of described descending (1a3) The more straightforward multiple prominent muscle having fluctuating great waves and multiple groove is compactly the most longitudinally carved, also in more precipitous form It is referred to as straight ripple；At ripple of the described end (1a4), upper radial direction is the most laterally carved with a little striped；There is equal pressure logarithm bent described in so that The clutch slider of bank wave straight ripple remodeling injection lawn machine gear-box the most more connects with the mechanism of the clutch of clutch block Scientific basis that the pressure angle of nearly higher mathematics is the most equal and more steadily and more reliable；Through polishing and assembling, then promote with band The warm extrusion powder metallurgy press batch production that the mechanical hand of powder coordinates；Gear housing remodeling injection-moulded plastic, with nylon double six Add 30% glass and carry out pre-treatment, first shine under fine day sunlight and process as many praseodymiums light, then preliminary drying is no less than at 81-119 degree 31 minutes；Gear housing after injection carries out post processing, at 100-121 degree decocting in water no less than 121 minutes；Whole assembling good seal Gear-box sampling put in the water that upper strata freezes no less than 24 hours strength checkings again；The gear wheel of described gear-box is handed over big Side set is taken turns and clutch slider, and it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, and powder used is temperature and pressure powder, described temperature and pressure Small white plate for taking accounts or notes temporary number 7.0g/ccmin-7.6g/ccmin, temperature and pressure temperature is at 99-129 degree Celsius, and the warm extrusion powder metallurgy workpieces pressed is first Immersion oil, pulls out and drains；Heat treatment again, carbo-nitriding, with methane and ammonia, no more than 899 degree of heat treatments 4 hours；It is tempered again Process 180 degree 90 minutes；Hardness described should have the equal pressure loaarithmic curve straight ripple of arc wave to meet at Rockwell HRC35-44 degree Engaging and satisfied described of the little staggered gear staggered gear big with warm extrusion powder metallurgy of stricture of vagina remodeling injection lawn machine gear-box The gear wheel of gear-box big staggered gear and the clutch of clutch slider；Bearing can be filled in the gear wheel of described gear-box, also can Dress stage clip；Described clutch slider is provided with flange (1a5), and it is provided with driver plate after porous (1a6) can connect with multiple screw rods (1a8) (1a7), described flange (1a5) is parallel with described rear driver plate (1a7), be beneficial to plug-in mounting between enter shift fork upper group Jaw (1c) and set aside jaw (2c) and make the most capable i.e. clutch in left and right can obtain the power of shift fork；Another of described clutch slider Great undertaking be entirety be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), if moulding want Ability of the loosing core demoulding, but take out because being that warm extrusion powder metallurgy is bad, existing energy need not be loosed core but mould is directly inserted through, its Flange (1a5) and the rear driver plate (1a7) that end is provided with behind that what way was skilful is is provided with in the middle part of it at described clutch slider are equal Being provided with the opening that multiple complementation is staggered, the most conveniently stripped, having striden across bad the loosing core of warm extrusion powder metallurgy can not bilayer processed Flange and the difficulty of driver plate, facilitate again and enter the upper shift fork head (1c) of shift fork at double-deck flange and driver plate plug-in mounting therebetween and set aside Jaw (2c) so that left and right is the most capable i.e. can obtain the power of shift fork from closing, and fundamentally solves clutch and does not slips up.

The entirety of described clutch slider be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), and The flange (1a5) and the rear driver plate (1a7) that end is provided with behind that are provided with in the middle part of it at described clutch slider are equipped with 4 complementations Staggered opening, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter shift fork Upper shift fork head (1c) and set aside jaw (2c).

The entirety of described clutch slider be provided with in the middle flange (105) and behind end be provided with rear driver plate (1a7), and The flange (1a5) and the rear driver plate (1a7) that end is provided with behind that are provided with in the middle part of it at described clutch slider are equipped with 2-3 mutually Handing in the opening of mistake retroactively, mouth limit has chamfering, described flange (1a5) and described rear driver plate (1a7) to have parallel surface, is beneficial at the two it Interleave and load the upper shift fork head (1c) of shift fork and set aside jaw (2c).

The entirety of described clutch slider be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), and The flange (1a5) and the rear driver plate (1a7) that end is provided with behind that are provided with in the middle part of it at described clutch slider are equipped with 5-24 Complementary staggered opening, mouth Edge Blend angle, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial at the two Between plug-in mounting enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).

Described clutch slider is provided with flange (1a5), and it is provided with 2 holes (1a6), driver plate after connecting with 2 screw rods (1a8) (1a7) make described flange (1a5) parallel with described rear driver plate (1a7), be beneficial to plug-in mounting between enter shift fork upper group Jaw (1c) and set aside jaw (2c).

Described clutch slider is provided with flange (1a5), and it is provided with 3-18 hole (1a6), after connecting with 3-18 screw rod (1a8) Driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters shift fork Upper shift fork head (1c) and set aside jaw (2c).

Described clutch slider is provided with flange (1a5), and it is provided with 3-18 hole (1a6), and it is screwed hole, can be with 3-18 screw rod (1a8) after connecting, driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to insert between Load the upper shift fork head (1c) of shift fork and set aside jaw (2c).

The gear wheel of described gear-box big staggered gear and clutch slider, it is all to be also known as warm extrusion powder metallurgy with temperature and pressure Compacting, powder used is temperature and pressure powder, and described temperature and pressure small white plate for taking accounts or notes temporary number SMF5040, for 7.0g/ccmin, temperature and pressure temperature is at 101- 119 degrees Celsius, the warm extrusion powder metallurgy workpieces elder generation immersion oil pressed, pull out and drain；Heat treatment again, carbon nitrogen oozes altogether, uses methane And ammonia, no more than 818 degree of heat treatments 4 hours；Temper 170 degree 60-100 minute again.

The gear wheel of described gear-box big staggered gear and clutch slider, it is all to be also known as warm extrusion powder metallurgy with temperature and pressure Compacting, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin, and temperature and pressure temperature, at 98 degrees Celsius, has been pressed Warm extrusion powder metallurgy workpieces is submerged initially in transgenic rape, pulls out and drains, and places into evacuation tank；Heat treatment again, carbon, nitrogen and boron oozes altogether, Iron-carbon alloy theory flex point 723 degree, 8 hours.

The individual clutch having logatithmic spiral of 3-18 that described clutch slider is provided with along end circumference with the end of clutch block is bored Being shaped with arc wave and straight ripple, each described clutch cone, successively by four kinds of morphologic arrangement, is followed successively by upward slope arc wave (1a1), top Arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that at described clutch slider and clutch block along end The contour curve of the dominant shape state of multiple clutches cone that circumference is provided with is a section that logatithmic spiral substantially is also known as equiangular spiral, then depends on Secondary the most locally carving by described four kinds of morphologic arrangement；Logatithmic spiral in the upgrade of described upward slope arc wave (1a1) Compactly radially at least 2 fluctuating great waves stricture of vaginas, also known as arc waves the most laterally it are carved with on arc；And at described top arc convex (1a2) On the most embossed or have at least 1；Compactly the most vertical in the more precipitous form of the gradient of the straight ripple of described descending (1a3) again To carving the most straightforward 2 the prominent muscle having fluctuating great waves and 2 grooves, the most straight ripple；On ripple of the described end (1a4) Radially the most laterally it is carved with at least 1 striped；When having equal pressure loaarithmic curve arc wave straight ripple clutch described in so that closer to Scientific basis that the pressure angle of higher mathematics is the most equal and more steadily and more reliable.

Accompanying drawing explanation

The most just postpone aforesaid plurality of accompanying drawing and improve and the accompanying drawing that increases is described further.

Figure 51 is the anterior schematic perspective view of the clutch slider of lawn machine gear-box；

Figure 52 is the schematic perspective view at the rear portion of the clutch slider of lawn machine gear-box；

Figure 53 is the generalized section of the gear wheel of lawn machine gear-box；

Figure 54 is the generalized section of the gear wheel with bearing of lawn machine gear-box；

Figure 55 is the schematic perspective view having shift fork and clutch slider and gear wheel of lawn machine gear-box；

Figure 56 is the side signal of the staggered opening of multiple complementations of the flange (1a5) of clutch slider and rear driver plate (1a7) Figure；

Figure 57 is the rear portion signal of the staggered opening of multiple complementations of the flange (1a5) of clutch slider and rear driver plate (1a7) Figure；

As it can be seen,

In figure:

1a1. is upward slope arc wave (Ia1)；

1a2. is top arc convex (1a2)；

1a3. is the straight ripple of descending (1a3)；

1a4. is end ripple (1a4)；

1a5. is flange (1a5)；

1a6. is porous (1a6)；

1a7. is rear driver plate (1a7)；

1a8. is multiple screw rod (1a8)

Usefulness:

There is the great undertaking of the clutch slider of equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box Be entirety be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), bad because being warm extrusion powder metallurgy Take out, flange (1a5) that what its way was skilful is is provided with in the middle part of it at described clutch slider and the rear driver plate that end is provided with behind (1a7) opening that multiple complementation is staggered it is equipped with, the most conveniently stripped, stride across warm extrusion powder metallurgy and can not make double-deck flange With the difficulty of driver plate, facilitate again and enter shift fork at double-deck flange and driver plate plug-in mounting therebetween so that left and right the most capable i.e. from conjunction The power of shift fork can be obtained, fundamentally solve clutch and do not slip up.Clutch slider sets along end circumference with the end of clutch block Being shaped with arc wave and straight ripple on some 3-18 the clutch cone having logatithmic spiral, each clutch cone is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that the master of clutch slider Yu clutch block The contour curve of form is a section of logatithmic spiral, in order to closer to higher mathematics when having a straight ripple clutch of loaarithmic curve arc wave The most equal scientific basis of pressure angle and more steadily and more reliable, achieve beyond thought effect, its usefulness is Self-evident.

It is embodied as way

Having equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, described gear-box is that lawn machine is used Gear-box, its output main shaft of described gear-box is exactly from walking the main rear axle of lawn machine, the axle head of the little gear of described gear-box with Big belt pulley is connected, and described big belt pulley is connected with the small belt pulley of power machine output shaft, referred to as primary transmission；Described little gear Engage with gear wheel, referred to as secondary transmission；In the walking gear of the band mono-directional overrun clutch at described main rear axle two ends and trailing wheel The transmission of gear, referred to as three grades transmissions；Described gear wheel is coaxial with described main rear axle and can be sleeved on described main rear axle rotationally On, it being provided with clutch block in described gear wheel, described main rear axle is also set with clutch slider, described clutch slider is provided with clutch Structure, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, and described pin is placed in described In radial hole on main rear axle vertical with the axis of described main rear axle, one end of described clutch structure is provided with clutch motion block, with Just operator pull and unclamp lawn machine in time walking handle and drive bracing wire, the bracing wire in bracing wire and described gear-box is drawn Arm, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, the combination of gear case lid and described canine tooth By described gear wheel with described under the common effect of the clutch slider being set with on the clutch block being provided with in wheel and described main rear axle Driving and idle running between main rear axle and implement from walking certainly the walking and from not walking of lawn machine；The axle of described little gear is pacified by bearing It is contained on described gear case lid (83)；The bearing installation position of described gear case lid (83) is at lawn machine gear-box The side of bearing installation position；In the outside of described gear case lid equipped with movable bracing wire torque arm (84), described bracing wire is drawn The plate end of arm (84) is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm (84) and hangs the little of little returning pull-spring Hole；The bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with is provided with open slot, is many foldings, is beneficial to the steel of bracing wire Cord pendant enters and is difficult to break off relations, and is easy to make bracing wire torque arm (84) rotate by bracing wire and drive arrangement of clutch clutch；Described Bracing wire torque arm (84) plate in be provided with slotted hole, in order to match with shift fork；The short axle in upper end of described shift fork be also provided with double flute and Screw thread is to lay torque arm and being handled by bracing wire；The upper shift fork head of described shift fork is symmetrical with setting aside jaw and protrudes , this shift fork includes that two of equilibrium dial point；The described inside containing the large bevel gear of inner conical drogue clutch is provided with mesopore and hollows out Taper, in order to mesopore penetrates the rear main shaft of hay mower, it is simple to the taper cut out and clutch block or waveform block are adaptive, simultaneously Also it is easy to its taper hollowed out and is provided with the inwall of dress clutch block；Its taper hollowed out or be provided with taper, or it is provided with dress clutch The inwall of block and multiple kick；Rear main shaft is provided with the hole hung down mutually, therefore thick straight pin (76), thin straight pin can be laid , and described stage clip is exactly spring (77) (78)；The little gear of described gear-box, for increasing gear ratio, suitably decreases small bevel gear The number of teeth of wheel；The number of teeth of described cone pinion is within 11 tooth, and large bevel gear is 28 teeth；First make by CNC or mould work Interior swaging die, then powder is put into pressing formation on press, re-sintering, i.e. the method for powder metallurgy manufactures cone pinion and containing interior The large bevel gear of tapered sleeve clutch, it is therefore prevented that root is cut；The decelerator upper casing (86) of described gear case lid directly can fill；Described umbellule The little gear of gear Ao Likang, described large bevel gear Ao Likang gear wheel, optimize nibbling of secondary gear spiral bevel gear Close parameter and geometrical factor, to constitute cycloid tooth hypoid gear；By steel wire rope and pull bar, make described lawn machine gear The short axle (9c) of the upper and lower side that case also known as contains the lower house (8c) of the gear speed-reducing clutch housing of multiple parts rotates certain Angle, and interlock upper shift fork head (1c) and set aside jaw (2c) by arched arm (3c), promotion slip pulling sleeve (4c) and promote from Close bearing shim (5c) and clutch block is axially moveable, thus engage in the rear wheel drive gear speed-reducing clutch of traverse gear The clutch gear of arrangement of clutch is carried out from walking；Described arrangement of clutch is sliding containing hay mower gear clutch speed reducer single side pushing Set, by sliding sleeve (41d), single group of limit (42d), inner cone flange (43d) is formed；On the sliding sleeve (41d) of described single side pushing sliding sleeve It is provided with single group of limit (42d)；List at described single side pushing sliding sleeve is dialled and is provided with inner cone flange (43d) on limit (42d)；And described list While the sliding sleeve (41d) dialling sliding sleeve (4d) is provided with discoid list dials limit (42d)；The medial surface of inner cone flange (43d) is circular cone Face, it is not more than 30 degree with axial angle；Owing to described single side pushing sliding sleeve (4d) is suit and slides on main shaft, therefore institute The axis (7d) of 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 described single side pushing sliding sleeve (4d) It is movably installed with shift fork；Shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, i.e. by institute Inner cone flange (43d) the contact thrust bearing shim on limit (42d) dialled by the list stated, so that arrangement of clutch work；Described is monolateral Dialling the list of sliding sleeve (4d), to dial limit (42d) in the form of annular discs；Described list dials the back side of the disk on limit (42d) and described inner cone flange (43d) thrust bearing shim can all be contacted；The short axle in upper end of shift fork is additionally provided with double flute and screw thread to lay pull bar and by drawing Line is handled, so that the existing desired group of power of shift fork rotates freely at certain angle again；Hay mower gear-box hydraulic fluid port, The hydraulic fluid port that i.e. side of gear reduction unit is placed, by the side platform of the lower house side being located at rear wheel drive gear speed-reducing clutch (4e), it is located at the screwed hole (2e) of decelerator side and is located at the lower section of screwed hole and the breach of the bottom surface in housing (3e) being formed, the axis of described screwed hole (2e) is not orthogonal to bottom surface；The demoulding is i.e. without side core-pulling for convenience, puts The side platform (4e) in spiral shell mosquito hole is that arc component big with top is joined directly together rather than there is indentation centre；Described screwed hole For being screwed into hydraulic fluid port screw, therefore the external diameter of threaded line is made to press close to end inner face as far as possible, in order to few retained oil during draining；Add oils and fats It is the thickest that to drench number very big, though can use effect should lubricating oil；The described lower section being located at screwed hole and going to the bottom in housing The breach (3e) in face is rectangle, arranges for preventing screw from not touching；Lawn machine gear-box, by according to support (62), fuselage Determine frame (63), bracing wire (68), extension spring (66), dynamic arm-tie (69), auxiliary drop panel (65), main rear axle (64), gear housing (61), skin Belt wheel (67), case lid (70), multiple screws (79), big sealing gasket (73), it is provided with the staggered gear (71) of groove (71f), staggered snail Bar (72), rear bearing block (74), ring washer (75), thick straight pin (76), thin straight pin (78), spring (77), formed, described One end bolt according to support (62) and fuselage determine that frame (63) is fixing to be connected, described fuselage determine frame (63) and is passed through another nut Connect firmly mutually with the rear wall of hay mower fuselage, and the described other end according to support (62) is provided with open slot (62f)；Described Bracing wire (68) is inserted in the open slot (62f) that the described other end according to support (62) is provided with actively, and draws with described The closing in end of spring (66) connects, and the other end of described extension spring (66) i.e. hook end are connected with described dynamic arm-tie (69)； Described dynamic arm-tie (69) is by multiple screws (79) and gear housing (61), case lid (70) and big sealing gasket (73) company of fixing Connect；The described middle part according to support (62) is provided with macropore, the main rear axle (64) described in denier movingly through described according to support (62) macropore at middle part；The described other end according to support (62) is provided with open slot (62f), its open slot being provided with (62f) its At least turnover of the narrow slot of opening；The inside of narrow slot is connected with circular hole；So that the steel wire rope of described bracing wire (68) can be from Side is inserted in the narrow slot of turnover and is entered circular hole；The end of the outer layer of bracing wire then with the described other end according to support (62) The upper surface being provided with open slot (62f) contacts, but must not pass through；The steel wire rope of only described bracing wire (68) can pass through, and It is connected with the closing in end of described extension spring (66), and the other end i.e. hook end by described extension spring (66) is with described Dynamic arm-tie (69) is connected；Described fuselage determines frame (63) two angles flat board more than right angle, and first flat board is provided with spiral shell Pit or nut, and on another flat board, it is provided with slotted hole, in order to assembling and the regulation of bolt；Described extension spring (66) one End has closing in end, and the other end of described extension spring (66) is the hook end of opening；Described dynamic arm-tie (69) which is provided with auxiliary torr Plate (65), is additionally provided with arc and position, multiple hole, in order to dynamic arm-tie (69) by multiple screws (79) and gear housing (61), case Lid (70) and big sealing gasket (73) are fixedly connected；And the auxiliary drop panel (65) that described dynamic arm-tie (69) is provided with, it sets Porose position, in order to be connected with the applicable position of fuselage by suitable spring and play auxiliary torr role, according to type Fixed；Described main rear axle (64) is provided with the hole hung down mutually, in order to lay thick straight pin (76), thin straight pin (78), and two Pocketed springs (77) between pin；Described spring (77) is also known as stage clip, and its two ends are and tight and polish；Described is provided with groove (71f) staggered gear (71), is enclosed within the thick straight pin (76) on the hole hung down mutually being arranged on described main rear axle (64), Thin straight pin (78), and the outside of the spring (77) of suit between two pins；And be meshed with described staggered worm screw (72)； Described staggered gear (71) its groove (71f) at least groove being provided with groove (71f)；Described gear housing (61) is provided with to be laid Bearing position, is also known as little gear in order to laying staggered worm screw (72)；Described gear housing (61) is additionally provided with lays axle bearing after master The seat (61f) of seat (74), the gear-box at the center at described seat (61f) is U-shaped, and its center is far deeper than die joint, it is sufficient to Put into include complete main after the diameter of axle rear bearing block (74) after, die joint will not be exceeded, it is simple to the big sealing gasket of holding plane shape (73)；Described belt pulley (67) is arranged on one end of staggered worm screw (72)；And it is defeated containing electromotor by engine by belt The small pulley going out end is dragged；One end lace wheel of described staggered worm screw (72)；And staggered worm screw (72) pacified by bearing It is contained in described gear housing (61), and engages with described staggered gear (71)；Another of described staggered worm screw (72) The end of end is cone, in order to the cone with case lid (70) cheats adaptation flexibly；The described the least gear of staggered worm screw (72) One end lace wheel, its mode connected has 2 kinds；1st kind is to use pin；Described pin steel spring plate circle becomes, and Broad in the middle and two is smaller；Staggered worm screw (72) is first installed and arrives gear-box, then belt pulley is installed and squeezes into pin；2nd kind of connection Mode is with key and at axle head tapping；The case lid (70) of the casing of lawn machine gear-box is provided with the big plane of periphery, and in week The big plane in limit is provided with multiple hole, in order to be connected with big sealing gasket (73) and gear housing (61) by multiple screws (79)； And be provided with cone hole at the jut of case lid, in order to the conical, flexible of the end of the other end of staggered worm screw (72) fit Join；Described rear bearing block (74) is the external form having D-shaped, and its endoporus is round, is beneficial to place main rear axle, in order to big sealing gasket (73) and gear housing (61) is connected, and it is no longer the rear bearing block of wholecircle；Described big sealing gasket (73) be have big plane and Multiple holes, in order to connect with gear housing (61) and rear bearing block (74) and case lid (70)；The short axle in upper end of shift fork is provided with double flute And screw thread is to lay torque arm and being handled by bracing wire；In the hope of making the existing desired group of power of shift fork rotate at certain angle again Freely；The upper shift fork head of described shift fork is symmetrical with setting aside jaw and protrudes, and is dialled point by original one and is improved to equal Two of weighing apparatus dial point, make original list dial torsional moment and have improved, and making clutch stir earlier above has improvement, makes pad be hardly damaged, Add the improvement of other associated components, the life-span of continuity gear clutch；Described have the equal pressure loaarithmic curve straight ripple of arc wave The feature of remodeling injection lawn machine gear-box is: the little little staggered gear of gear Worm type of described gear-box, described Worm type The axle head of little staggered gear is connected with big belt pulley, and described big belt pulley is connected with the small belt pulley of power machine output shaft, and it is Primary transmission, no-load voltage ratio is at 2.1-4；Described little gear engages with gear wheel, referred to as secondary transmission；The gear wheel of described gear-box is used Big staggered gear, it is warm extrusion powder metallurgy；Described little staggered gear staggered gear big with warm extrusion powder metallurgy engages, its For secondary transmission, no-load voltage ratio is at 5.1-8；The warm extrusion powder metallurgy walking gear of described main rear axle two ends band mono-directional overrun clutch With trailing wheel plastic annular wheel transmission, it is three grades of transmissions, and no-load voltage ratio is at 2.1-4；Described big staggered gear is coaxial with described main rear axle And movable set is on described main rear axle, the gear of described gear wheel is big staggered gear, and it is the processing of warm extrusion powder metallurgy Manufacture；Being provided with clutch block in described gear wheel, it is also to cooperate with containing clutch in the equal pressure loaarithmic curve straight ripple of arc wave Big staggered gear, described gear wheel is coaxial with described main rear axle and can be sleeved on rotationally on described main rear axle；After described master Also being set with clutch slider on axle, described clutch slider is provided with equal pressure loaarithmic curve, that is described clutch slider is to have The clutch slider of the equal pressure loaarithmic curve straight ripple of arc wave, the inside of described clutch structure is containing can be along with pin is along after described master The chute that axle slides, described pin is placed in the radial hole on described main rear axle and vertical with the axis of described main rear axle, institute The one end stating clutch structure is provided with clutch motion block, in order to operator pull and unclamp lawn machine drive bracing wire from walking handle Time, at the bracing wire torque arm of bracing wire and described gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oil-containing axle On the clutch block hold, being provided with in the combination of gear case lid and described gear wheel and described main rear axle, the clutch slider of suit is total to Under same-action, carry out secondary transmission and implemented by the driving between described gear wheel and described main rear axle and idle running from walking grass Certainly walking and not from walking of level ground machine；The described feature having equal pressure loaarithmic curve arc wave straight ripple remodeling injection lawn machine gear-box Also residing in, described gear-box is remodeling injection casing, operator do not grab lawn machine from walk handle and without when straining at line because Stage clip is contained in the outside of clutch slider, away from gear wheel rather than between described gear wheel and clutch slider, and normality during hands pine Bracing wire pine, and bracing wire torque arm makes shift fork outwards and push down stage clip and make clutch slider separate with gear wheel under extension spring effect, from Closing slide block and main rear axle departs from active force, this is for from walking state；The carrying from walking handle of finger-tight lawn machine as operator When straining at line, because stage clip is contained in the outside of clutch slider, away from gear wheel rather than described gear wheel and clutch slider it Between, closing state bracing wire time hand-tight tightly, and bracing wire torque arm makes shift fork inside under extension spring effect, does not push down stage clip, stage clip promotes effectively Clutch slider and make clutch slider engage with the clutch block being provided with in gear wheel, clutch slider and main rear axle relate to active force, Thus realizing primary transmission, secondary transmission and three grades of transmissions, this is for from walking state；Described have equal pressure loaarithmic curve arc wave straight The clutch slider of ripple remodeling injection lawn machine gear-box engages with the clutch block being provided with in gear wheel and is further characterized in that, described The clutch that clutch slider is provided with, along end circumference, the cone that multiple smooth curve is connected with the end of clutch block is bored, and it is slightly in circle Taper, the bus of the curved surface of the taper seat of its cone is that the equiangular spiral with pressure angle properties equivalent everywhere is also referred to as logarithm Helical；So described clutch slider is easy to smooth co-operation with the clutch block in gear wheel by equiangular spiral face；Above-mentioned technology In scheme, take a section of main body of described clutch slider,

Set up differential equation d ρ/d θ=k ρ:

If polar equation ρ=ρ (θ), because wanting pressure angle λ the most equal, therefore tg λ=constant, make tg λ=k,

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.

Solve d ρ/d θ=k ρ, both sides integration after variables separation:

∫ d ρ/ρ=∫ kd θ, because of ρ ＞ O, is easy to get:

Ln ρ=k θ+C.

I.e. exponential form:

Use PRO/ENGINEER WILDFIRE mapping software, newly set working directory, newly-built part,

Set up parameter (PARAMETER) 1:C real number (real number), default assignment.

Set up parameter (PARAMETER) 2:N integer (integer), default assignment.

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

Loaarithmic curve:

Z=0

X=10*t

Y=log (10*t+0.0001)

Make loaarithmic curve；

Followed by, using and rotate, merge, hypostazation etc. instructs, and assembles with workpiece and merge, and can model；

Modeled with described equation and PRO/ENGINEER WILDFIRE again, inputted CNC machining center, used CIMATRO or MASTCAM, the punching block of warm extrusion powder die-casting processed, or assist with milling machine, planer and electrical spark working work；Electricity consumption fire Flower adds man-hour, with described equation input CNC machining center, processes, and will first make tungsten copper electrode, then makes and first quench The hardest punching block clutch core rod；Process big staggered gear, then first to make tungsten copper electrode with gear-hobbing machine, then the tungsten copper electricity rolled out The swing pinion part of pole, immersion spirit of vinegar makes the little several silks of described swing pinion, and so that precautions averts perils, follow-up electric machining is offset on ground Cydariform discharge in the gap of tooth root, make warm extrusion powder metallurgical gear punching block with the lathe having three-dimensional rotation head；Machine again Workpiece, makes on multiple clutch cones having logatithmic spiral that described clutch slider and the end of clutch block are provided with along end circumference Arc wave and straight ripple, each described clutch cone, successively by four kinds of morphologic arrangement, is followed successively by upward slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that at described clutch slider and clutch block along end circumference The contour curve of the dominant shape state of the multiple clutches cone being provided with is a section that logatithmic spiral substantially is also known as equiangular spiral, then presses successively Each local of described four kinds of morphologic arrangement is carved；On the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) Compactly radially the most laterally it is carved with multiple fluctuating great waves stricture of vagina, also known as arc wave；And do not carve on described top arc convex (1a2) Stricture of vagina, but to make its push up the convex approximation center of circle of arc by the straight ripple of described descending closer to；Again in the gradient of the straight ripple of described descending (1a3) The more straightforward multiple prominent muscle having fluctuating great waves and multiple groove is compactly the most longitudinally carved, also in more precipitous form It is referred to as straight ripple；At ripple of the described end (1a4), upper radial direction is the most laterally carved with a little striped；There is equal pressure logarithm bent described in so that The clutch slider of bank wave straight ripple powder metallurgy lawn machine gear-box the most more connects with the mechanism of the clutch of clutch block Scientific basis that the pressure angle of nearly higher mathematics is the most equal and more steadily and more reliable；Through polishing and assembling, then promote with band The warm extrusion powder metallurgy press batch production that the mechanical hand of powder coordinates；Gear housing remodeling injection-moulded plastic, with nylon double six Add 30% glass and carry out pre-treatment, first shine under fine day sunlight and process as many praseodymiums light, then preliminary drying is no less than at 81-119 degree 31 minutes；Gear housing after injection carries out post processing, at 100-121 degree decocting in water no less than 121 minutes；Whole assembling good seal Gear-box sampling put in the water that upper strata freezes no less than 24 hours strength checkings again；The gear wheel of described gear-box is handed over big Side set is taken turns and clutch slider, and it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, and powder used is temperature and pressure powder, described temperature and pressure Small white plate for taking accounts or notes temporary number 7.0g/ccmin-7.6g/ccmin, temperature and pressure temperature is at 99-129 degree Celsius, and the warm extrusion powder metallurgy workpieces pressed is first Immersion oil, pulls out and drains；Heat treatment again, carbo-nitriding, with methane and ammonia, no more than 899 degree of heat treatments 4 hours；It is tempered again Process 180 degree 90 minutes；Hardness described should have the equal pressure loaarithmic curve straight ripple of arc wave to meet at Rockwell HRC35-44 degree Engaging and satisfied described of the little staggered gear staggered gear big with warm extrusion powder metallurgy of stricture of vagina powder metallurgy lawn machine gear-box The gear wheel of gear-box big staggered gear and the clutch of clutch slider；Bearing can be filled in the gear wheel of described gear-box, also can Dress stage clip；Described clutch slider is provided with flange (1a5), and it is provided with driver plate after porous (1a6) can connect with multiple screw rods (1a8) (1a7), described flange (1a5) is parallel with described rear driver plate (1a7), be beneficial to plug-in mounting between enter shift fork upper group Jaw (1c) and set aside jaw (2c) and make the most capable i.e. clutch in left and right can obtain the power of shift fork；Another of described clutch slider Great undertaking be entirety be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), if moulding want Ability of the loosing core demoulding, but take out because being that warm extrusion powder metallurgy is bad, existing energy need not be loosed core but mould is directly inserted through, its Flange (1a5) and the rear driver plate (1a7) that end is provided with behind that what way was skilful is is provided with in the middle part of it at described clutch slider are equal Being provided with the opening that multiple complementation is staggered, the most conveniently stripped, having striden across bad the loosing core of warm extrusion powder metallurgy can not bilayer processed Flange and the difficulty of driver plate, facilitate again and enter the upper shift fork head (1c) of shift fork at double-deck flange and driver plate plug-in mounting therebetween and set aside Jaw (2c) so that left and right is the most capable i.e. can obtain the power of shift fork from closing, and fundamentally solves clutch and does not slips up.

The entirety of described clutch slider be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), and The flange (1a5) and the rear driver plate (1a7) that end is provided with behind that are provided with in the middle part of it at described clutch slider are equipped with 4 complementations Staggered opening, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter shift fork Upper shift fork head (1c) and set aside jaw (2c).

The entirety of described clutch slider be provided with in the middle flange (105) and behind end be provided with rear driver plate (1a7), and The flange (1a5) and the rear driver plate (1a7) that end is provided with behind that are provided with in the middle part of it at described clutch slider are equipped with 2-3 mutually Handing in the opening of mistake retroactively, mouth limit has chamfering, described flange (1a5) and described rear driver plate (1a7) to have parallel surface, is beneficial at the two it Interleave and load the upper shift fork head (1c) of shift fork and set aside jaw (2c).

The entirety of described clutch slider be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), and The flange (1a5) and the rear driver plate (1a7) that end is provided with behind that are provided with in the middle part of it at described clutch slider are equipped with 5-24 Complementary staggered opening, mouth Edge Blend angle, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial at the two Between plug-in mounting enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).

Described clutch slider is provided with flange (1a5), and it is provided with 2 holes (1a6), driver plate after connecting with 2 screw rods (1a8) (1a7) make described flange (1a5) parallel with described rear driver plate (1a7), be beneficial to plug-in mounting between enter shift fork upper group Jaw (1c) and set aside jaw (2c).

Described clutch slider is provided with flange (1a5), and it is provided with 3-18 hole (1a6), after connecting with 3-18 screw rod (1a8) Driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters shift fork Upper shift fork head (1c) and set aside jaw (2c).

Described clutch slider is provided with flange (1a5), and it is provided with 3-18 hole (1a6), and it is screwed hole, can be with 3-18 screw rod (1a8) after connecting, driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to insert between Load the upper shift fork head (1c) of shift fork and set aside jaw (2c).

The gear wheel of described gear-box big staggered gear and clutch slider, it is all to be also known as warm extrusion powder metallurgy with temperature and pressure Compacting, powder used is temperature and pressure powder, and described temperature and pressure small white plate for taking accounts or notes temporary number SMF5040, for 7.0g/ccmin, temperature and pressure temperature is at 101- 119 degrees Celsius, the warm extrusion powder metallurgy workpieces elder generation immersion oil pressed, pull out and drain；Heat treatment again, carbon nitrogen oozes altogether, uses methane And ammonia, no more than 818 degree of heat treatments 4 hours；Temper 170 degree 60-100 minute again.

The gear wheel of described gear-box big staggered gear and clutch slider, it is all to be also known as warm extrusion powder metallurgy with temperature and pressure Compacting, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin, and temperature and pressure temperature, at 98 degrees Celsius, has been pressed Warm extrusion powder metallurgy workpieces is submerged initially in transgenic rape, pulls out and drains, and places into evacuation tank；Heat treatment again, carbon, nitrogen and boron oozes altogether, Iron-carbon alloy theory flex point 723 degree, 8 hours.

The individual clutch having logatithmic spiral of 3-18 that described clutch slider is provided with along end circumference with the end of clutch block is bored Being shaped with arc wave and straight ripple, each described clutch cone, successively by four kinds of morphologic arrangement, is followed successively by upward slope arc wave (1a1), top Arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that at described clutch slider and clutch block along end The contour curve of the dominant shape state of multiple clutches cone that circumference is provided with is a section that logatithmic spiral substantially is also known as equiangular spiral, then depends on Secondary the most locally carving by described four kinds of morphologic arrangement；Logatithmic spiral in the upgrade of described upward slope arc wave (1a1) Compactly radially at least 2 fluctuating great waves stricture of vaginas, also known as arc waves the most laterally it are carved with on arc；And at described top arc convex (1a2) On the most embossed or have at least 1；Compactly the most vertical in the more precipitous form of the gradient of the straight ripple of described descending (1a3) again To carving the most straightforward 2 the prominent muscle having fluctuating great waves and 2 grooves, the most straight ripple；On ripple of the described end (1a4) Radially the most laterally it is carved with at least 1 striped；When having equal pressure loaarithmic curve arc wave straight ripple clutch described in so that closer to Scientific basis that the pressure angle of higher mathematics is the most equal and more steadily and more reliable.

The present invention relates to a kind of hay mower cut the grass on a lawn for places such as garden, park and road sides, especially Being to have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its great undertaking is that clutch slider entirety exists Be provided with in the middle part of it flange (105) and behind end be provided with rear driver plate (1a7), take out because being that warm extrusion powder metallurgy is bad, it is done Flange (105) and the rear driver plate (1a7) that end is provided with behind that what method was skilful is is provided with in the middle part of it at described clutch slider are all provided with There is the opening that multiple complementation is staggered, the most conveniently stripped, stride across warm extrusion powder metallurgy and can not make double-deck flange and driver plate Difficulty, facilitates again and enters shift fork at double-deck flange and driver plate plug-in mounting therebetween so that left and right is the most capable i.e. can be obtained from closing The power of shift fork, fundamentally solves clutch and does not slips up.Clutch slider and the end of clutch block along end circumference be provided with multiple Having on the clutch cone of logatithmic spiral and be shaped 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), end ripple (1a4), say, that at the wheel of described clutch slider Yu the dominant shape state of clutch block Wide curve is a section of logatithmic spiral, in order to closer to the pressure angle of higher mathematics when having a straight ripple clutch of loaarithmic curve arc wave The most equal scientific basis and more steadily and more reliable.Explore warm extrusion powder metallurgically manufacturing method and also have many innovations.Lawn Hay mover gear-box either Plastic or metal class, limited by technology and cost etc., certainly walk clutch unstable and Insecure situation happens occasionally, and solves the international hard nut to crack of sporadic not clutch problem, always industry.

Equal pressure loaarithmic curve sounds profound, but be common in its tangible factory, and this kind of have equal pressure loaarithmic curve Cam many middle rank pincers worker all can be done, and makees the end of two punching block cores having equal pressure loaarithmic curve, clutch slider and clutch block Being shaped with arc wave and straight ripple on multiple clutch cones having logatithmic spiral that end circumference is provided with, each clutch cone is followed successively by Slope arc wave (1a1), top arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that at described clutch slider It is one section of logatithmic spiral with the contour curve of the dominant shape state of clutch block, then produces in batches.Existing can need not loose core but Mould is directly inserted through, and flange (1a5) that what its way was skilful is is provided with in the middle part of it at described clutch slider and behind end are provided with Rear driver plate (1a7) be equipped with the opening that multiple complementation is staggered, the most conveniently stripped, striden across warm extrusion powder metallurgy bad Loose core and can not make double-deck flange and the difficulty of driver plate, facilitate again double-deck flange and driver plate plug-in mounting therebetween enter shift fork upper group Jaw (1c) and set aside jaw (2c) so that left and right the most capable i.e. from close the power that can obtain shift fork, fundamentally solve Clutch is not slipped up, because people adds the power power more than spring of the shift fork of leverage.

Specific embodiments various described in this specification is treasure and the crystallization of domestic and foreign experience, is also used to Describe the purpose of this creation, feature and effect in detail, for the people's bodyguard being familiar with this type of skill, according to above-mentioned all explanations, May make this invention and specific embodiment and some part makees some modifications and amendment, its essence is without departing from the essence going out this creation God category person, in the range of all should being included in the patent protection of the present invention, the most first Chen Ming.

Claims (10)

1. having equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, described gear-box is lawn machine tooth Roller box, its output main shaft of described gear-box is exactly that the axle head of the little gear of described gear-box is with big from the main rear axle walking lawn machine Belt pulley is connected, and described big belt pulley is connected with the small belt pulley of power machine output shaft, referred to as primary transmission；Described little gear with Gear wheel engages, referred to as secondary transmission；The walking gear of the band mono-directional overrun clutch at described main rear axle two ends and trailing wheel internal tooth The transmission of wheel, referred to as three grades transmissions；Described gear wheel is coaxial with described main rear axle and can be sleeved on rotationally on described main rear axle, Being provided with clutch block in described gear wheel, described main rear axle is also set with clutch slider, described clutch slider is provided with clutch knot Structure, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, and described pin is placed in described master In radial hole on rear axle vertical with the axis of described main rear axle, one end of described clutch structure is provided with clutch motion block, in order to Operator pull and unclamp lawn machine in time walking handle and drive bracing wire, bracing wire and described gear-box bracing wire torque arm, In shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, the combination of gear case lid and described gear wheel By after described gear wheel and described master under the common effect of the clutch slider of suit on the clutch block being provided with and described main rear axle Driving and idle running between axle and implement from walking certainly the walking and from not walking of lawn machine；The axle of described little gear is arranged on by bearing On described gear case lid (83)；The bearing installation position of described gear case lid (83) is at the bearing of lawn machine gear-box The side of installation position；In the outside of described gear case lid equipped with movable bracing wire torque arm (84), described bracing wire torque arm (84) plate end is provided with bracing wire side plate, and is provided with at another plate end of described bracing wire torque arm (84) and hangs the little of little returning pull-spring Hole；The bracing wire side plate that the plate end of described bracing wire torque arm (84) is provided with is provided with open slot, is many foldings, is beneficial to the steel of bracing wire Cord pendant enters and is difficult to break off relations, and is easy to make bracing wire torque arm (84) rotate by bracing wire and drive arrangement of clutch clutch；Described Bracing wire torque arm (84) plate in be provided with slotted hole, in order to match with shift fork；The short axle in upper end of described shift fork be also provided with double flute and Screw thread is to lay torque arm and being handled by bracing wire；The upper shift fork head of described shift fork is symmetrical with setting aside jaw and protrudes , this shift fork includes that two of equilibrium dial point；Inside containing the large bevel gear of inner conical drogue clutch is provided with mesopore and the taper hollowed out, So that mesopore penetrates the rear main shaft of hay mower, it is simple to the taper cut out is adaptive with clutch block or waveform block, is also easy to simultaneously Its taper hollowed out is provided with the inwall of dress clutch block；Its taper hollowed out or be provided with taper, or it is provided with the interior of dress clutch block Wall and multiple kick；Rear main shaft is provided with the hole hung down mutually, therefore thick straight pin (76) can be laid, thin straight pin (78), and Described stage clip is exactly spring (77)；Described arrangement of clutch gear clutch speed reducer single side pushing sliding sleeve Han hay mower, by sliding Set (41d), single group of limit (42d), inner cone flange (43d) is formed；The sliding sleeve (41d) of described single side pushing sliding sleeve is provided with single group Limit (42d)；List at described single side pushing sliding sleeve is dialled and is provided with inner cone flange (43d) on limit (42d)；And described single side pushing sliding sleeve (4d) sliding sleeve (41d) is provided with discoid list and dials limit (42d)；The medial surface of inner cone flange (43d) is taper seat, itself and axle It is not more than 30 degree to angle；Owing to described single side pushing sliding sleeve (4d) is suit and slides on main shaft, therefore described monolateral The axis (7d) dialling sliding sleeve (4d) coincides with the main shaft (7d) of the arrangement of clutch in hay mower gear clutch speed reducer, i.e. Self-moving lawn mower rear wheel drive main shaft；The outside movable set of the sliding sleeve (41d) of described single side pushing sliding sleeve (4d) There is shift fork；Shift fork can be dialled limit (42d) with the list of described single side pushing sliding sleeve (4d) and contacts and stir it, is i.e. dialled by described list Inner cone flange (43d) the contact thrust bearing shim on limit (42d), so that arrangement of clutch work；Described single side pushing sliding sleeve (4d) it is in the form of annular discs that limit (42d) dialled by list；Described list dials the back side of the disk on limit (42d) and described inner cone flange (43d) All can contact thrust bearing shim；The short axle in upper end of shift fork is additionally provided with double flute and screw thread to lay pull bar and being grasped by bracing wire It is vertical, so that the existing desired group of power of shift fork rotates freely at certain angle again；Hay mower gear-box hydraulic fluid port, i.e. gear The hydraulic fluid port that the side of decelerator is placed, by the side platform (4e) of the lower house side being located at rear wheel drive gear speed-reducing clutch, It is located at the screwed hole (2e) of decelerator side and is located at breach (3e) institute of the lower section of screwed hole and the bottom surface in housing Composition, the axis of described screwed hole (2e) is not orthogonal to bottom surface；The demoulding is i.e. without side core-pulling for convenience, puts screwed hole Side platform (4e) be that arc component big with top is joined directly together rather than there is indentation centre；Described screwed hole is to be stubborn Oiler screw, therefore make the external diameter of threaded line press close to end inner face as far as possible, in order to few retained oil during draining；Described is located at spiral shell The breach (3e) of the lower section of pit and the bottom surface in housing is rectangle, arranges for preventing screw from not touching；Described Main rear axle (64) be provided with the hole hung down mutually, in order to laying thick straight pin (76), thin straight pin (78) is, and overlap between two pins Shock mount (77)；Described spring (77) is also known as stage clip, and its two ends are and tight and polish；The described friendship being provided with groove (71f) Side set wheel (71), is enclosed within the thick straight pin (76) on the hole hung down mutually being arranged on described main rear axle (64), thin straight pin (78) outside of the spring (77), and being set with between two pins；And be meshed with described staggered worm screw (72)；Described sets There is staggered gear (71) its groove (71f) at least groove of groove (71f)；Described gear housing (61) is provided with lays bearing position, It is also known as little gear in order to laying staggered worm screw (72)；Described gear housing (61) be additionally provided with lay main after bearing housing (74) Seat (61f), the gear-box at the center at described seat (61f) is U-shaped, and its center is far deeper than die joint, it is sufficient to puts into and includes After full master after the rear bearing block (74) of the diameter of axle, die joint will not be exceeded, it is simple to the big sealing gasket (73) of holding plane shape；Described Belt pulley (67) is arranged on one end of staggered worm screw (72)；And contained the small pulley of engine output end by engine by belt Dragged；One end lace wheel of described staggered worm screw (72)；And staggered worm screw (72) is arranged on described tooth by bearing In wheel casing (61), and engage with described staggered gear (71)；The end of the other end of described staggered worm screw (72) is circle Taper, in order to the cone with case lid (70) cheats adaptation flexibly；One end lace wheel of the described the least gear of staggered worm screw (72), Its mode connected has 2 kinds；1st kind is to use pin；Described pin steel spring plate circle becomes, and broad in the middle and two is slightly Little；Staggered worm screw (72) is first installed and arrives gear-box, then belt pulley is installed and squeezes into pin；2nd kind of connected mode be with key and Axle head tapping；The case lid (70) of the casing of lawn machine gear-box is provided with the big plane of periphery, and is provided with in the big plane of periphery Multiple holes, in order to be connected with big sealing gasket (73) and gear housing (61) by multiple screws (79)；And dashing forward at case lid The portion of rising is provided with cone hole, in order to adaptive with the conical, flexible ground of the end of the other end of staggered worm screw (72)；Described rear bearing Seat (74) is the external form having D-shaped, and its endoporus is round, is beneficial to place main rear axle, in order to big sealing gasket (73) and gear housing (61) it is connected, and is no longer the rear bearing block of wholecircle；Described big sealing gasket (73) is to have big plane and multiple hole, in order to tooth Wheel casing (61) and rear bearing block (74) and case lid (70) connect；The short axle in upper end of shift fork is provided with double flute and screw thread to lay and drawing Arm and being handled by bracing wire；In the hope of making the existing desired group of power of shift fork rotate freely at certain angle again；Described shift fork Upper shift fork head and set aside jaw and be symmetrical and protrude, dialled point by original one and be improved to two of equilibrium and dial points, make List originally is dialled torsional moment and has been improved, and making clutch stir earlier above has improvement, makes pad be hardly damaged, and adds other dependent part The improvement of part, the life-span of continuity gear clutch；Described have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine tooth The feature of roller box is: the little little staggered gear of gear Worm type of described gear-box, the axle head of the little staggered gear of described Worm type Being connected with big belt pulley, described big belt pulley is connected with the small belt pulley of power machine output shaft, and it is primary transmission, and no-load voltage ratio exists 2.1-4；Described little gear engages with gear wheel, referred to as secondary transmission；The big staggered gear of the gear wheel of described gear-box, it is Warm extrusion powder metallurgy；Described little staggered gear staggered gear big with warm extrusion powder metallurgy engages, and it is secondary transmission, no-load voltage ratio At 5.1-8；The warm extrusion powder metallurgy walking gear of described main rear axle two ends band mono-directional overrun clutch and trailing wheel plastics internal tooth Wheel transmission, it is three grades of transmissions, and no-load voltage ratio is at 2.1-4；Described big staggered gear is coaxial with described main rear axle and movable set is in institute Stating on main rear axle, the gear of described gear wheel is big staggered gear, and it is warm extrusion powder metallurgy processing and manufacturing；Described canine tooth Being provided with clutch block in wheel, it is also to cooperate with containing the big staggered gear of clutch, institute in the equal pressure loaarithmic curve straight ripple of arc wave State gear wheel coaxial with described main rear axle and can be sleeved on rotationally on described main rear axle；Clutch also it is set with on described main rear axle Slide block, described clutch slider is provided with equal pressure loaarithmic curve, that is described clutch slider is to have equal pressure loaarithmic curve arc The clutch slider of the straight ripple of wave, the inside of described clutch structure is containing the chute that can slide along described main rear axle along with pin, institute State pin to be placed in the radial hole on described main rear axle and vertical with the axis of described main rear axle, one end of described clutch structure Be provided with clutch motion block, in order to operator pull and unclamp lawn machine in time walking handle and drive bracing wire, in bracing wire and described The bracing wire torque arm of gear-box, shift fork, extension spring, stage clip, thrust bearing, pad, rolling bearing, oiliness bearing, gear case lid On the clutch block being provided with in combination and described gear wheel and described main rear axle under the common effect of the clutch slider of suit, carry out two Level transmission is also implemented oneself and is walked certainly walking and not of lawn machine by the driving between described gear wheel and described main rear axle and idle running From walking；Described have equal pressure loaarithmic curve arc wave straight ripple remodeling injection lawn machine gear-box to be further characterized in that, described tooth Roller box is remodeling injection casing, operator do not grab lawn machine from walk handle and without when straining at line because stage clip is contained in clutch The outside of slide block, away from gear wheel rather than between described gear wheel and clutch slider, normality bracing wire pine during hands pine, and draw Line torque arm makes shift fork outwards and push down stage clip and make clutch slider separate with gear wheel under extension spring effect, after clutch slider and master Axle departs from active force, and this is for from walking state；When operator finger-tight lawn machine in time walking handle and band strains at line because Stage clip is contained in the outside of clutch slider, away from gear wheel rather than between described gear wheel and clutch slider, closes state time hand-tight Bracing wire is tight, and bracing wire torque arm makes shift fork inside under extension spring effect, does not push down stage clip, stage clip promote clutch slider effectively and make from Closing slide block to engage with the clutch block being provided with in gear wheel, clutch slider and main rear axle relate to active force, thus realize one-level and pass Dynamic, secondary transmission and three grades of transmissions, this is for from walking state；Described have equal pressure loaarithmic curve arc wave straight ripple remodeling injection grass The clutch slider of level ground machine gear-box engages with the clutch block being provided with in gear wheel and is further characterized in that, described clutch slider and clutch The end of block is provided with the clutch cone of the cone that multiple smooth curve connects along end circumference, and it is slightly conical, its cone The bus of curved surface of taper seat be that the equiangular spiral with pressure angle properties equivalent everywhere is also referred to as logatithmic spiral；So it is described Clutch slider and gear wheel in clutch block be easy to smooth co-operation by equiangular spiral face；In technique scheme, take described A section of main body of clutch slider,

Set up differential equation d ρ/d θ=k ρ:

If polar equation ρ=ρ (θ), because wanting pressure angle λ the most equal, therefore tg λ=constant, make tg λ=k,

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.

Solve d ρ/d θ=k ρ, both sides integration after variables separation:

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

Ln ρ=k θ+C,

I.e. exponential form:

Use PRO/ENGINEER WILDFIRE mapping software, newly set working directory, newly-built part,

Set up parameter (PARAMETER) 1:C real number (real number), default assignment；

Set up parameter (PARAMETER) 2:N integer (integer), default assignment；

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

Loaarithmic curve:

Z=0

X=10*t

Y=log (10*t+0.0001)

Make loaarithmic curve；

Followed by, using and rotate, merge, hypostazation etc. instructs, and assembles with workpiece and merge, and can model；

Modeled with described equation and PRO/ENGINEER WILDFIRE again, inputted CNC machining center, with CIMATRO or MASTCAM, the punching block of warm extrusion powder die-casting processed, or assist with milling machine, planer and electrical spark working work；When using spark machined, With described equation input CNC machining center, process, will first make tungsten copper electrode, then make the hardest punching block that first quenches Clutch core rod；Process big staggered gear, then first to make tungsten copper electrode, then the rotary teeth the tungsten copper electrode rolled out with gear-hobbing machine Wheel part, immerse spirit of vinegar make the little several silks of described swing pinion in case precautions averts perils ground offset follow-up electric machining cydariform electric discharge In the gap of tooth root, make warm extrusion powder metallurgical gear punching block with the lathe having three-dimensional rotation head；Machine workpieces again, described Arc wave and directly is made on multiple clutches cones having logatithmic spiral that the end of clutch slider and clutch block is provided with along end circumference Ripple, each described clutch cone, successively by four kinds of morphologic arrangement, is followed successively by upward slope arc wave (1a1), top arc convex (1a2), descending Straight ripple (1a3), end ripple (1a4), say, that described clutch slider and clutch block along end circumference be provided with multiple The contour curve of the dominant shape state of clutch cone is a section that logatithmic spiral substantially is also known as equiangular spiral, more successively by described four kinds of shapes Each local of state arrangement is carved；On the logatithmic spiral arc of the upgrade of described upward slope arc wave (1a1) compactly radially The most laterally it is carved with multiple fluctuating great waves stricture of vagina, also known as arc wave；And the most embossed on described top arc convex (1a2), but to make it The convex approximation center of circle of arc, top by the straight ripple of described descending closer to；Again in the shape that the gradient of the straight ripple of described descending (1a3) is more precipitous The more straightforward multiple prominent muscle having fluctuating great waves and multiple groove, the most straight ripple is compactly the most longitudinally carved in state Stricture of vagina；At ripple of the described end (1a4), upper radial direction is the most laterally carved with a little striped；Equal pressure loaarithmic curve arc wave is had described in so that The clutch slider of straight ripple remodeling injection lawn machine gear-box and the mechanism of the clutch of clutch block are operationally closer to high number The most equal scientific basis of pressure angle learned and more steadily and more reliable；Through polishing and assembling, then promote the machine of powder with band The warm extrusion powder metallurgy press batch production that tool hands coordinates；Gear housing remodeling injection-moulded plastic, adds 30% glass with nylon double six Fibre carries out pre-treatment, first shines under fine day sunlight and processes as many praseodymiums light, then preliminary drying is no less than 31 minutes at 81-119 degree；Note Gear housing after moulding carries out post processing, at 100-121 degree decocting in water no less than 121 minutes；The gear-box of whole assembling good seal Sampling is put into and is no less than 24 hours strength checkings again in the water that upper strata freezes；The gear wheel of described gear-box with big staggered gear and Clutch slider, it is all also known as warm extrusion powder metallurgy pressing with temperature and pressure, and powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number with 7.0g/ccmin-7.6g/ccmin, temperature and pressure temperature at 99-129 degree Celsius, the warm extrusion powder metallurgy workpieces elder generation immersion oil pressed, drag for Go out to drain；Heat treatment again, carbo-nitriding, with methane and ammonia, no more than 899 degree of heat treatments 4 hours；Temper 180 again Spend 90 minutes；Hardness described should have equal pressure loaarithmic curve arc wave straight ripple powder to meet at Rockwell HRC35-44 degree Metallurgical lawn machine gear-box, described gear-box is lawn machine gear-box, the little staggered gear of its tool gear-box and warm extrusion powder The engagement of metallurgical big staggered gear and meet the big staggered gear of gear wheel and the clutch of clutch slider of described gear-box；Institute Bearing can be filled in stating the gear wheel of gear-box, also can fill stage clip；Described clutch slider is provided with flange (1a5), and it is provided with porous (1a6) driver plate (1a7) after connecting with multiple screw rods (1a8), described flange (1a5) is parallel with described rear driver plate (1a7), It is beneficial to plug-in mounting between enter the upper shift fork head (1c) of shift fork and set aside jaw (2c) and make the most capable i.e. clutch in left and right all The power of shift fork can be obtained；Another great undertaking of described clutch slider is that entirety is provided with flange (1a5) and behind in the middle End is provided with rear driver plate (1a7), the ability demoulding if moulding to be loosed core, but bad because being warm extrusion powder metallurgy Take out, existing can need not loose core but mould is directly inserted through, the flange that what its way was skilful is is provided with in the middle part of it at described clutch slider (1a5) the rear driver plate (1a7) that and behind end is provided with is equipped with the opening that multiple complementation is staggered, the most conveniently stripped, across Cross bad the loosing core of warm extrusion powder metallurgy and can not make double-deck flange and the difficulty of driver plate, facilitated again at double-deck flange and driver plate two Between person, plug-in mounting enters the upper shift fork head (1c) of shift fork and sets aside jaw (2c) so that left and right is the most capable i.e. can be dialled from closing The power of fork, fundamentally solves clutch and does not slips up, because people adds the power power more than spring of the shift fork of leverage.

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Be characterised by: the entirety of described clutch slider be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), And flange (1a5) and the rear driver plate (1a7) that end is provided with behind being provided with in the middle part of it at described clutch slider is equipped with 4 mutually Handing in the opening of mistake retroactively, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to plug-in mounting between and enter to dial Fork upper shift fork head (1c) and set aside jaw (2c).

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Be characterised by: the entirety of described clutch slider be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), And flange (1a5) and the rear driver plate (1a7) that end is provided with behind being provided with in the middle part of it at described clutch slider is equipped with 2-3 Complementary staggered opening, mouth limit has chamfering, described flange (1a5) and described rear driver plate (1a7) to have parallel surface, is beneficial at the two Between plug-in mounting enter the upper shift fork head (1c) of shift fork and set aside jaw (2c).

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Be characterised by: the entirety of described clutch slider be provided with in the middle flange (1a5) and behind end be provided with rear driver plate (1a7), And flange (1a5) and the rear driver plate (1a7) that end is provided with behind being provided with in the middle part of it at described clutch slider is equipped with 5-24 The opening that individual complementation is staggered, mouth Edge Blend angle, described flange (1a5) and described rear driver plate (1a7) have parallel surface, are beneficial to two Between person, plug-in mounting enters the upper shift fork head (1c) of shift fork and sets aside jaw (2c).

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Being characterised by: described clutch slider is provided with flange (1a5), it is provided with 2 holes (1a6), driver plate after connecting with 2 screw rods (1a8) (1a7) make described flange (1a5) parallel with described rear driver plate (1a7), be beneficial to plug-in mounting between enter shift fork upper group Jaw (1c) and set aside jaw (2c).

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Being characterised by: described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), can connect with 3-18 screw rod (1a8) Rear driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to plug-in mounting between and enters shift fork Upper shift fork head (1c) and set aside jaw (2c).

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Being characterised by: described clutch slider is provided with flange (1a5), it is provided with 3-18 hole (1a6), and it is screwed hole, can be with 3-18 screw rod (1a8) after connecting, driver plate (1a7) makes described flange (1a5) parallel with described rear driver plate (1a7), is beneficial to insert between Load the upper shift fork head (1c) of shift fork and set aside jaw (2c).

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Being characterised by: the gear wheel of described gear-box big staggered gear and clutch slider, it is all to be also known as warm extrusion powder smelting with temperature and pressure Gold compacting, powder used is temperature and pressure powder, and described temperature and pressure small white plate for taking accounts or notes temporary number SMF5040, for 7.0g/ccmin, temperature and pressure temperature is at 101- 119 degrees Celsius, the warm extrusion powder metallurgy workpieces elder generation immersion oil pressed, pull out and drain；Heat treatment again, carbon nitrogen oozes altogether, uses methane And ammonia, no more than 818 degree of heat treatments 4 hours；Temper 170 degree 60-100 minute again.

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its Being characterised by: the gear wheel of described gear-box big staggered gear and clutch slider, it is all to be also known as warm extrusion powder smelting with temperature and pressure Gold compacting, powder used is temperature and pressure powder, described temperature and pressure small white plate for taking accounts or notes temporary number 7.0g/ccmin, and temperature and pressure temperature, at 98 degrees Celsius, has been pressed Warm extrusion powder metallurgy workpieces be submerged initially in transgenic rape, pull out and drain, place into evacuation tank；Heat treatment again, carbon, nitrogen and boron oozes altogether, Iron-carbon alloy theory flex point 723 degree, 8 hours.

The most according to claim 1 have equal pressure loaarithmic curve arc wave straight ripple powder metallurgy lawn machine gear-box, its It is characterised by: the individual clutch having logatithmic spiral of 3-18 that described clutch slider is provided with along end circumference with the end of clutch block is bored Being shaped with arc wave and straight ripple, each described clutch cone, successively by four kinds of morphologic arrangement, is followed successively by upward slope arc wave (1a1), top Arc convex (1a2), the straight ripple of descending (1a3), end ripple (1a4), say, that at described clutch slider and clutch block along end The contour curve of the dominant shape state of multiple clutches cone that circumference is provided with is a section that logatithmic spiral substantially is also known as equiangular spiral, then depends on Secondary the most locally carving by described four kinds of morphologic arrangement；Logatithmic spiral in the upgrade of described upward slope arc wave (1a1) Compactly radially at least 2 fluctuating great waves stricture of vaginas, also known as arc waves the most laterally it are carved with on arc；And at described top arc convex (1a2) On the most embossed or have at least 1；Compactly the most vertical in the more precipitous form of the gradient of the straight ripple of described descending (1a3) again To carving the most straightforward 2 the prominent muscle having fluctuating great waves and 2 grooves, the most straight ripple；On ripple of the described end (1a4) Radially the most laterally it is carved with at least 1 striped；When having equal pressure loaarithmic curve arc wave straight ripple clutch described in so that closer to Scientific basis that the pressure angle of higher mathematics is the most equal and more steadily and more reliable.