CN102326478B

CN102326478B - Series motor power-operated mower

Info

Publication number: CN102326478B
Application number: CN 201110230393
Authority: CN
Inventors: 苏克
Original assignee: Ningbo Daye Garden Equipment Co Ltd
Current assignee: Ningbo big leaf garden equipment Limited by Share Ltd
Priority date: 2011-08-09
Filing date: 2011-08-09
Publication date: 2013-07-31
Anticipated expiration: 2031-08-09
Also published as: CN102326478A

Abstract

The invention relates to a series motor power-operated mower, comprising a grass mowing head and a reel. The series motor power-operated mower is characterized in that three assemblies, namely a charging and contravarient storage battery pulling-out support assembly, a cutting device assembly which is dragged by the series motor, is arranged at the middle part of the mover and is provided with a pull rotating rod and the grass mowing head, and a reel assembly, are additionally arranged on a common lawn mower, thus the history that a nylon wire releasing device of the grass mowing head can not be applied to the mower is broken, a nylon wire is improved to be a noise reduction wire with a triangle spiral groove; because of the adoption of a wire winder which is provided with multiple damping mechanisms, namely a centrifugal slow retraction device, a lateral piston damping device, a position lock and a ball position lock, an inverse blocking mechanism, a trap pressure spring damping mechanism and a racker angle trench type damping mechanism which are complementary to one another, the moving range of a common wired power-operated grass mower is greatly increased; so it's probably safe to say that a new technical field of the mower provided with both the grass mowing head and the reel is opened up.

Description

The series excited machine power-operated mower

Technical field

The present invention relates to a kind of hay mower that places such as garden, park and road next door cut the grass on a lawn that is used for, the main improvement is the support that the hay mower front portion is provided with the placement accumulator of movable extraction; The cutter sweep that mower middle part is provided with changes by not being contained in this center but the series excited machine of biasing drags; Cutter sweep can be with two kinds, and a kind of is the cutter that fan plastics tool rest is arranged, and another kind is that the nylon wire of the reel in the runner on the former mower is transplanted on the mower; Because of the series excited machine of biasing has been abdicated the central shaft position, could spur bull stick with center of the present invention backguy, make reel aluminium head unwrapping wire, thereby break the history that moving head nylon wire cutter sweep can't be used for mower; Again owing to adopt a kind of Winder that has multiple damping mechanism, promptly by centrifugal slow restoring device, side piston damping unit, positional lock, reverse blocking mechanism, trap stage clip damping mechanism, racker angle slot type damping mechanism complementary Winder, thereby increased the mowing scope of the power-operated mower of common live wire greatly.Perhaps we can say, started the mower that a kind of existing moving head has winder again, a kind of like this new technical field.

Background technology

Hay mower is widely used in mowing by the selected mode of people's hobby.Some operation pedestrian likes and when be accustomed to use mower, makes big slightly strength and a kind of sensation that relies on and press down is arranged on the handrail on latter half of, and this has just increased the unsettled possibility of perk of front-wheel virtually; And the design of mower also should be looked after the comfortable of user and convenient as far as possible.Use to stick up before the petrolic mower also and lack, because of engine heavier.But sticking up the bad phenomenon of sticking up before the near front wheel particularly before also having takes place.For power-operated mower, because the electromotor ratio engine is light, and the electromotor axis will drive the very big hay knife of tactical diameter, again can not too forward installation, so the front-wheel of power-operated mower sticks up, and to lift phenomenon more common.Say again, according to related standards GB4706.78-2005 for example; IEC60335-2-77-2002; Standards such as EN836-1997, particularly EN836/A3-2004/4.2.3.2.1～4.2.3.2.3.3, the code requirement that all has slope 16.7 to spend.Add the husky kettle of counterweight in the complete machine front portion, installation will change the chassis, add position, three holes, also will add sandstone, trouble.Counterweight is because of heavier, and cost of transportation is also higher.

Other has common mower, as Figure 10, shown in the moving head explosive view, without cutter, is driven the moving head that nylon wire is arranged by series excited machine.When installing mower, and start the nylon wire rotation that makes in the reel 25-3, just can beat the grass.When line in short-term, operator's pier is pressed, reel aluminium head 25-3b bumps ground, makes reel spring 25-1 compression, and reel 25-3 is changeed, and makes nylon wire 134 logical wire over inserted sheet 25-6 in it, and unwrapping wire.The long line of emitting is pruned by blade 127.The time spent is not placed on blade cover 126 on the blade 127, and protective action is arranged.Moving head is beaten the grass effective, than the light and handy power saving of cutter, but because of the need pier presses line, and can't be contained on the common mower of wheel.

Common hay mower extensively adopts engine, and scope of activities is wide, but wants oil consumption, the exhaust pollution environment.Some operation pedestrian likes using power-operated mower, but is subjected to the restriction of power supply, and the extensive employing of this mower also is restricted.

Pacing up and down for a long time as two innovation thinkings such as the ghost, use for reference and participate in European correlation experience for many years and repeatedly explore, is thousand to consider and good fortune has one.If, imagine a device, for example center backguy pulling bull stick if can make reel aluminium head unwrapping wire, just can adopt light and handy moving head and power saving on hay mower; Fruit and for example, counterweight need not husky kettle, the also tank of improved once, and on hay mower, establish accumulator, preferably establish winder with easy access; Originally the damping of winder is malfunctioning sometimes unreliable, knows that all the malfunctioning once in a while of bobbin winoler is world-famous puzzle; Fortunately having what just worked out is that winder can be used with drawing with the pipe winding device that stops, so a kind of series excited machine power-operated mower of novel biasing exactly existing moving head has the mower of winder again, has just arisen at the historic moment.Its resultant effect is: enlarged the scope of application, added and suppress grass soil moisture conservation and safety, and fuel-efficient and environmental protection.

Why to use winder? because very long electric wire on the ground at random when power-operated mower comes and goes mowing, is just stepped on by pin sometimes because of carelessness, or is pressed onto by wheel, influence safety; Sometimes again can be or disorderly twine because of electric wire knotting, cause line to fall short of and suspend mowing, or remove to manage line by staff, increased potential safety hazard.Why to install to winder on the power-operated mower? know all that with the people who crosses power-operated mower mowing has the grass of leakage often, must heavily cut, particularly when circumstance complication is mixed in the lawn if any grove, just need advance several steps push away several steps and about repeatedly repeat mowing; If winder is placed on far place, near the electric wire the mower can not be in time with drawing with stopping synchronous turnover, still can soft repeated falling on the ground, and have and stepped on or, or can not in time pass in and out line by the danger of wheel load.Winder is installed on the power-operated mower, and not only in order to replace counterweight, and for free to advance or retreat, described winder is in two kinds of dress methods at the front portion and the middle part of mower, and its line outlet is all higher apart from ground, so be difficult for being stepped on or by wheel load.

Summary of the invention

The present invention relates to a kind of hay mower that places such as garden, park and road next door cut the grass on a lawn that is used for, a kind of series excited machine power-operated mower of novel biasing, it is the mower that existing moving head has winder again, mainly be on common hay mower, to be equipped with three big assemblies, promptly be provided with bracket assembly for battery, also be provided with the cutter sweep assembly of pulling bull stick and moving head, and be provided with the winder assembly; Described support is the support that is provided with the placement accumulator of movable extraction in the hay mower front portion; Described cutter sweep is located at the mower middle part, cutter sweep can be with two kinds, a kind of is the plastics tool rest that is provided with fan on the hay knife at mower center, another kind is that the nylon wire of the reel in the runner on the former mower is transplanted on the mower, is by not being contained in the mower center but the series excited machine of biasing is dragged; Abdicated the central shaft position because of the series excited machine of biasing, just might make central shaft hollow, could spur bull stick, make the reel unwrapping wire, thereby broken the history that moving head nylon wire cutter sweep can't be used for mower with center of the present invention backguy; Again owing to adopt a kind of Winder that has multiple damping mechanism, multiple complementation is more reliable, promptly by centrifugal slow restoring device, side piston damping unit, positional lock and ball position lock, reverse blocking mechanism, racker angle slot type damping mechanism complementary Winder, thereby increased the mowing scope of the power-operated mower of common live wire greatly.Perhaps we can say, started the mower that a kind of existing moving head has winder again, a kind of like this new technical field; Purpose is to add accumulator or lengthening electric wire and enlarge the mowing scope, strengthen counterweight in order to pressing grass soil moisture conservation and slope 16.7 degree safety, and fuel-efficient energy-conservation and favourable RoHS discharges environmental protection without internal combustion engine.

The present invention solves the technical scheme that its technical problem takes:

A kind of series excited machine power-operated mower, it is the mower that existing moving head has winder again, mainly be on common hay mower, to be equipped with three big assemblies, promptly be provided with bracket assembly for battery, be provided with the cutter sweep assembly that pulling bull stick and moving head are arranged that is located at the mower middle part that series excited machine drags, and be provided with the winder assembly; Described support is the support that is provided with the placement accumulator of movable extraction in the hay mower front portion; Described cutter sweep has two kinds, and a kind of is on the hay knife at mower center, is provided with the tool rest of plastic fan, so that wind-guiding and insulation; Another kind is that the nylon wire of the reel in the runner on the former mower is transplanted on the mower, because of the series excited machine of biasing has been abdicated the central shaft position, just might make central shaft hollow, could spur bull stick with center of the present invention backguy, make the reel unwrapping wire, thereby broken the history that moving head nylon wire cutter sweep can't be used for mower; On mower, establish random turnover winder again, form the mower that a kind of existing moving head has winder again, be called the series excited machine power-operated mower by common call; Described bracket assembly for battery, decide slide (90c) by the carrier base that is packed in lawnmower chassis, and the telescopic support alive (90) that is provided with slide bar (90a) and spacing (90b), and the accumulator that has charger and inverter is formed, the slide bar (90a) of described support alive (90) is sleeved on deciding in the slide (90c) of described carrier base, when be drawn out and by spacing (90b) location after, can place described accumulator thereon; The cutter sweep assembly that described series excited machine power-operated mower middle part is provided with is by not being contained in this center but the series excited machine of biasing is dragged; Cutter sweep has two kinds, and a kind of is the cutter that fan plastics tool rest is arranged, and another kind is that the nylon wire of the reel in the runner of the moving head on the former mower is used on the mower as cutter; Described have fan plastics tool rest (85) to be provided with spline (85a), and its spline (82a) with big belt wheel (82) matches; Described tool rest 85 is provided with a plurality of fans (85d), and is provided with a plurality of small through hole (85c), preferably hex hole; And described fan is provided with cutting edge (85b); Moreover described tool rest should be used electrically non-conductive material, plastics for example, and particularly nylon adds fibre; The cutter sweep assembly that moving head and center backguy pulling bull stick are arranged that described series excited machine power-operated mower middle part is provided with, by interior framework (76), series excited machine (77), motor pulley (84), belt (83), big belt pulley (82), backguy (81), pulling bull stick (78), thrust bearing (79), what the labyrinth was arranged draws pivoted frame (80), and moving head is formed; And described moving head, the flake down that contains the line box base of the being otherwise known as assembly of beating the grass is by the head capsule of beating the grass (24-3), reel spring (25-1), reel (25-3), nylon wire (134), protective ring (123), line eye inserted sheet (25-6), line box cover (25-7) is formed; Described blade (127) is located on the circumference of mowing machine cut dish, and the time spent is not placed on blade cover (126) on the blade (127); The feature of described nylon wire (134) is to have notch (34a) on its cross section, minimum one, or a plurality of, for example 3; Described notch is helical along nylon wire, and becomes five equilibrium uniform along circumference; Described notch is leg-of-mutton; Described interior framework (76) is contained in the top of cutting dish of lawnmower chassis, on the axle of the series excited machine (77) of biasing, is provided with motor pulley (84), and by belt (83), drives the big belt pulley that cut disk center (82) of center line on the chassis; Described big belt pulley (82) drives described moving head; The described big belt pulley (82) and the head capsule (24-3) of beating the grass, line eye inserted sheet (25-6), line box cover (25-7) links to each other successively, in the head capsule of beating the grass (24-3), pass through reel spring (25-1), be pressed with reel (25-3), be equiped with nylon wire (134) on the described reel (25-3), and protective ring 123; Described pulling bull stick 78 is connected with described reel (25-3), or is connected, or with an axle ring washer, or use anti-screw thread, or continuous with thrust bearing; The other end of described pulling bull stick (78), by thrust bearing (79), and link to each other with the pivoted frame (80) that draws that the labyrinth is arranged, describedly draw a termination that is set with the steel wire rope of described backguy (81) on the pivoted frame (80), and another distal head of backguy links to each other with the unwrapping wire control stick (81b) of mower; It is characterized in that described the labyrinth arranged draw pivoted frame (80), it is square frame shape, be provided with the hole (80c) of pulling bull stick below it, slotted hole (80b) is established in its side, establish centre bore (80d) above it, particularly be provided with labyrinth (80a) above it, it has a plurality of detours, connect described slotted hole and centre bore, draw pivoted frame (80) to enter centre bore so that backguy is put into; The circuit diagram of described series excited machine power-operated mower is mainly by insurance RC, K switch, inductance L 3, inductance L 4, capacitor C, and be provided with the series excited machine M of winding L 1 and winding L 2, and starting button AQ and handle (75), and diode Di, resistance R 1, R2, luminous tube LED, bobbin winoler and plugs and sockets are formed; The head that it is characterized in that described handle 75 is provided with eave tile; Described starting button AQ is provided with sliver QA2, and by the sliver briquetting QA1 that ins succession, also is provided with banking stop QA3; When pressing starting button AQ, and when pulling handle 75, the eave tile that the head of described handle 75 is provided with is being pressed the briquetting QA1 that start button AQ, and makes the briquetting QA1 that starts button AQ press K switch, could start; In the time will closing, as long as pull handle 75, but each part is separately with regard to elastic reset; The bobbin winoler of described mower is the bobbin winoler that has multiple damping mechanism, promptly by centrifugal slow restoring device, side piston damping unit, positional lock and ball position lock, reverse blocking mechanism, racker angle slot type damping mechanism complementary bobbin winoler, because of multiple complementation more reliable; Bobbin winoler or be located at mower front portion or middle part also can be selected the bobbin winoler with several or those several damping mechanisms, because of around fixing gear wheel (4), has living space and can place a plurality of pinions (9) and connect a plurality of damping mechanisms and positional lock; Perhaps can use described accumulator instead; Can select the shell of bobbin winoler connected by have strong market potential (18) and can be in 180 degree the support (19) of little commentaries on classics be placed on the mower and assemble; Also can be in the front portion of mower or the middle part establish vertical axis and assemble; Can establish the joint of two slip ring carbon-bearing brushes on the described vertical axis; Bobbin winoler outlet when the operator promotes mower; When stopping drawing, line can lock; When retrodicting, winder makes the electric wire automatic rewinding; If when too fast, all multiactions of each damping unit can be strengthened the damping that bounces back slowly, make it free to advance or retreat.

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the schematic diagram that winder is contained in anterior series excited machine power-operated mower.

Fig. 2 is circuit (the not containing the accumulator part) schematic diagram that the series excited machine power-operated mower of winder is arranged.

Fig. 3 is the schematic diagram that winder is contained in the series excited machine power-operated mower at middle part.

Fig. 4 is the schematic diagram that the cutter sweep assembly that pulling bull stick and moving head are arranged that is located at the mower middle part of series excited machine is arranged.

Fig. 5 is the profile that the cutter sweep assembly that pulling bull stick and moving head are arranged that is located at the mower middle part of series excited machine is arranged.

Fig. 6 is the schematic diagram that draws pivoted frame (80) that the labyrinth is arranged that connects pull wire head and pulling bull stick and thrust bearing.

Fig. 7 is the schematic diagram of the reel (25-3) of moving head.

Fig. 8 is the schematic diagram of big belt pulley (82) that is located at the cutter sweep assembly at mower middle part by biasing motor-driven.

Fig. 9 is provided in a side of the schematic diagram of the pulling bull stick (78) of the cutter sweep assembly that moving head is arranged in the middle part of the mower.

Figure 10 is the exploded perspective view of moving head.

Figure 11 is the schematic diagram of bracket assembly for battery.

Figure 12 is the schematic diagram that the insulation tool rest (85) of fan is arranged.

Figure 13 is the schematic diagram of nylon wire (134) that the noise control of triangle abnormal shape is arranged.

Figure 14 is the schematic diagram of the amplification of nylon wire (134) that the noise control of triangle abnormal shape is arranged.

Figure 15 is the assembling schematic diagram that the switch enclosure (75b) of button (QA) and shift bar (75) and band latch is arranged.

Figure 16 is the schematic diagram of button (QA) that the switch enclosure (75b) of button (QA) and shift bar (75) and latch is arranged.

Figure 17 is the blast structural representation of bobbin winoler.

Figure 18 is the stereogram of the damping rotating disk of centrifugal slow restoring device.

Figure 19 is the stereogram pin of turning that torsion spring is arranged that centrifugal slow restoring device is joined the damping rotating disk.

Figure 20 is the part assembly structure schematic diagram of bobbin winoler.

Figure 21 is the schematic top plan view the when locking of inside and outside cam path at far and near many control points is arranged.

Figure 22 is the schematic top plan view when the pulling out of inside and outside cam path at far and near many control points arranged.

Figure 23 is the schematic diagram that the damping unit of poke rod and rack-and-pinion is arranged.

Figure 24 is the schematic diagram that the side piston damping unit of 4 small slide blocks and extension spring and side piston is arranged.

Figure 25 is gears engaged and side piston damping box shell scheme of installation.

Figure 26 is the rub profile of unidirectional mechanism of the spiral of damping unit.

Figure 27 is the rub sectility stereogram of unidirectional mechanism of the spiral of winder and damping unit.

Figure 28 is the stereogram of the roller of racker angle slot type damping mechanism.

Figure 29 is the stereogram that the guider after-poppet (51) of angle groove is arranged.

Figure 30 is the profile in elevation of trap stage clip damping mechanism.

Figure 31 is the stereogram of racker.

Figure 32 is the generalized section that the positional lock of ball is arranged.

Figure 33 is the profile in elevation of reverse blocking mechanism.

As Fig. 1 to shown in Figure 33, among the figure:

1. be small slide block; 2. be extension spring; 3. be damping box shell; 4. be gear wheel; 5. be inner disc; 6. be the damping rotating disk; 7. be valve piston; 8. be the compression spring; 9. be pinion; 10. be to turn a pin; 11. be the disc spring clockwork spring; 12. be to go up deep bid; 13. be upper casing; 14. be main wheel; 15. be pipe joint; 16. be lower wall; 17. be lower casing; 18. be to have strong market potential; 19. be support; 20. little end cap under being; 21. be to go up little inner cap; 22. be to go up little enclosing cover; 105. be the inside spin friction wheel of helical angle greater than 23.5 degree; 106. be the helical axis of helical angle greater than 23.5 degree; 23. be the reverse blocking rotating disk; 24. be the reverse blocking switch block; 25. be bearing pin; 26. be torsion spring (26); 41. be arc-shaped rack; 42. be and the arc-shaped rack meshed gears; 43. be poke rod; 51. be the guider after-poppet; 52. be the guider fore-stock; 53. be racker; 54. be the roller shaft core cap; 55. be roller; 61. be the trap (61) of trap stage clip mechanism; 62. be the stage clip (62) of trap stage clip mechanism; 63. be the damping box shell (63) of trap stage clip mechanism; 64. be the close thread spindle (64) of trap stage clip mechanism; 65. be the damping lid (65) of trap stage clip mechanism; 63a. be the protruding guide rail (63a) of the damping box shell (63) of trap stage clip mechanism; 70. be the ball (70) that the ball position lock is arranged; 71. be the position lock box shell (71) that axial elongated slot (71a) is arranged that the ball position lock is arranged; 72. be the lock core (72) that the ball position lock is arranged; 73. be that L shaped end (73a) being arranged and the torsion spring (73) of U-shaped end (73b) being arranged of ball position lock arranged; 74. be lock core shaft (74); 25-1. be the reel spring; 25-3. be reel; 134. be nylon wire; 25-3b. be reel aluminium head; 25-6. be line eye inserted sheet; 25-7. be the line box cover; 126. be the blade cover; 127. be blade; RC. be insurance; K. be switch; L3. be inductance L 3; L4. be inductance L 4; C. be capacitor C; L1. be winding L 1; L2. be winding L 2; M. be series excited machine; AQ. be the starting button; 75. be handle 75; Di. be diode; R1 is a resistance R 1; R2. be electric R2; LED. be luminous tube LED; 90c. be carrier base decide slide 90c; 90a. be slide bar 90a; 90b. be spacing 90b; 90. be the support 90 of living; 90c. be to decide slide 90c; 85. be tool rest 85; 85a. be spline 85a; 82. be big belt wheel 82; 82a. be spline 82a; 85d. be fan 85d; So that wind-guiding; 85c. be small through hole 85c; 85b. be cutting edge 85b; 76. be interior framework 76; 77. be series excited machine 77; 84. be motor pulley; 83. be belt; 82. be big belt pulley; 81. be backguy; 78. be the pulling bull stick; 79. be thrust bearing; 80. be the labyrinth arranged draw pivoted frame 80; 24-3. be the head capsule 24-3 of beating the grass; 123. be protective ring 123; 34a. be notch 34a; 81. be backguy 81; 81b. be unwrapping wire control stick 81b; 80c. be the hole 80c of pulling bull stick; 80b. be slotted hole 80b; 80d. be centre bore 80d; 80a. be labyrinth 80a; 75b. be the connector assembly 75b of band handle 75; The head of described handle 75 is provided with eave tile; QA2. be sliver QA2; QA1 is briquetting QA1; QA3. be banking stop QA3.

Usefulness of the present invention is to add accumulator and winder promptly extends electric wire and enlarges the mowing scope on mower, add with moving head and noise control tool rest to improve mowing efficient, strengthen counterweight in order to soil moisture conservation of pressure grass and slope 16.7 degree safety, and the fuel-efficient energy-conservation and favourable RoHS discharging environmental protection without internal combustion engine.

Be enlightenment according to desirable implementing method of the present invention, by the content of this specification, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.Concerning the technical staff of near field, obviously also have the change of many equivalent technologies, but under the precondition that does not depart from the claim flesh and blood, the change of being done still belongs to the rights protection scope of this patent.

Embodiment

The present invention is the common significant improvement that is used for the mower that places such as garden, park and roadside cut the grass on a lawn, and main the improvement is the support that the hay mower front portion is provided with the placement accumulator of movable extraction; The cutter sweep that mower middle part is provided with by not being contained in this center but biasing series excited machine dragged; Cutter sweep can be with two kinds, and a kind of is the cutter that fan plastics tool rest is arranged, and another kind is that the nylon wire of the reel in the runner on the former mower is transplanted on the mower; Because of the series excited machine of biasing has been abdicated the central shaft position, could spur bull stick with center of the present invention backguy, make reel aluminium head unwrapping wire, thereby break the history that moving head nylon wire cutter sweep can't be used for mower; Again owing to adopt a kind of Winder that has multiple damping mechanism, promptly by centrifugal slow restoring device, side piston damping unit, positional lock, trap stage clip damping mechanism, reverse blocking mechanism, racker angle slot type damping mechanism complementary Winder, thereby increased the mowing scope of the power-operated mower of common live wire greatly.Perhaps we can say, started the mower that a kind of existing moving head has winder again, a kind of like this new technical field.Its usefulness is to solve counterweight, power supply and all problems of mowing.

A kind of series excited machine power-operated mower, it is the mower that existing moving head has winder again, mainly be on common hay mower, to be equipped with three big assemblies, promptly be provided with bracket assembly for battery, be provided with the cutter sweep assembly that pulling bull stick and moving head are arranged that is located at the mower middle part that series excited machine drags, and be provided with the winder assembly; Described support is the support that is provided with the placement accumulator of movable extraction in the hay mower front portion; Described cutter sweep has two kinds, and a kind of is on the hay knife at mower center, is provided with the tool rest of plastic fan, so that wind-guiding and insulation; Another kind is that the nylon wire of the reel in the runner on the former mower is transplanted on the mower, has abdicated the central shaft position because of the series excited machine of biasing, just might make central shaft hollow, could make the reel unwrapping wire with center of the present invention backguy pulling bull stick; Preferably join cutter sweep when practical by the examination of careless bar grass condition; Described winder is positioned on the front portion or the middle part of mower, solves counterweight and power supply; Below described in detail respectively:

The bracket assembly for battery that described series excited machine power-operated mower is provided with is the support that is provided with the placement accumulator of movable extraction in the hay mower front portion; Described bracket assembly for battery, as shown in figure 11, decide slide 90c by the carrier base that is packed in mower bottom, and the telescopic support alive 90 that is provided with slide bar 90a and spacing 90b, and the unillustrated accumulator that has charger and inverter forms, and the slide bar 90a of described support alive (90) is sleeved on deciding in the slide 90c of described carrier base, when be drawn out and by spacing 90b location after, described accumulator can be placed thereon, also what counterweight can be let alone.The operator both can select described accumulator for use, can use external power supply instead by winder again, so that can both mow under the situation of zone, lawn that Duo Shu is mingled with or temporary interruption.

The cutter sweep assembly that described series excited machine power-operated mower middle part is provided with is by not being contained in this center but the series excited machine of biasing is dragged; Cutter sweep can be with two kinds, and a kind of is the cutter that fan plastics tool rest is arranged, and another kind is that the nylon wire of the reel in the runner of the moving head on the former mower is transplanted on the mower; Abdicate the central shaft position because of the series excited machine of biasing, could use the center backguy to spur bull stick, made reel aluminium head unwrapping wire, thereby broken the history that moving head nylon wire cutter sweep can't be used for mower; The cutter that fan plastics tool rest is arranged that described series excited machine power-operated mower is used, be on the hay knife at mower center, be provided with the tool rest of plastic fan, referring to Figure 12, described tool rest 85 is provided with spline 85a, so that match, so that under the drive of the series excited machine of setovering, make the grass that lancinates of tool rest with the spline 82a of big belt wheel 82; Described tool rest 85 is provided with a plurality of fan 85d, so that wind-guiding; And described fan is provided with a plurality of small through hole 85c, and hex hole preferably is in order to noise reduction; And described fan is provided with cutting edge 85b, in order to the anti-grass that twines; Described tool rest should be used electrically non-conductive material, and for example nylon adds fine plastics.

The cutter sweep assembly that described series excited machine power-operated mower middle part is provided with is by not being contained in this center but the series excited machine of biasing is dragged; Cutter sweep can be with two kinds, and a kind of is the cutter that fan plastics tool rest is arranged, and another kind is that the nylon wire of the reel in the runner of the moving head on the former mower is transplanted on the mower; Abdicate the central shaft position because of the series excited machine of biasing, could use the center backguy to spur bull stick, made reel aluminium head unwrapping wire, thereby broken the history that moving head nylon wire cutter sweep can't be used for mower; The cutter sweep assembly that moving head and center backguy pulling bull stick are arranged that described series excited machine power-operated mower middle part is provided with, referring to Fig. 4 and Fig. 5, by interior framework 76, series excited machine 77, motor pulley 84, belt 83, big belt pulley 82, backguy 81, pulling bull stick 78, thrust bearing 79, what the labyrinth was arranged draws pivoted frame 80, and moving head is formed; And described moving head, the flake down that contains the line box base of the being otherwise known as assembly of beating the grass can be referring to Figure 10, by beating the grass head capsule 24-3, and reel spring 25-1, reel 25-3, nylon wire 134, protective ring 123, line eye inserted sheet 25-6, line box cover 25-7 forms; Described blade 127 is located on the circumference of mowing machine cut dish, and the time spent is not placed on blade cover 126 on the blade 127, and protective action is arranged; Originally with firm reel aluminium head 25-3b, when line in short-term, operator's pier is pressed, reel aluminium head 25-3b bumps ground, make reel spring 25-1 compression, and reel 25-3 is changeed, make the nylon wire 134 logical wire over inserted sheet 25-6 in it, and unwrapping wire, the long line of emitting is pruned by blade 127; Now change into without pier pressure touch ground, thus reel aluminium head 25-3b can be saved, but, make the reel unwrapping wire with center backguy pulling bull stick; The long line of emitting is pruned by blade 127; Described nylon wire 134, the most handy a kind of mower abnormity multiple-grooved line, the feature of described special-shaped line is to have notch 34a on its cross section, minimum one, or a plurality of, for example 3; Described notch is helical along nylon wire, and becomes five equilibrium uniform along circumference; Described notch is leg-of-mutton, in order to mowing; Described interior framework 76, the top of cutting dish of dress lawnmower chassis on the axle of the series excited machine 77 of setovering, is provided with motor pulley 84, and by belt 83, drives the big belt pulley that cut disk center 82 of center line on the chassis; Described big belt pulley 82 drives described moving head; The described big belt pulley 82 and the head capsule 24-3 of beating the grass, line eye inserted sheet 25-6, line box cover 25-7 link to each other successively, in the head capsule 24-3 of beating the grass, pass through reel spring 25-1, be pressed with reel 25-3, be equiped with nylon wire 134 on the described reel 25-3, and protective ring 123; Described pulling bull stick 78 is connected with described reel 25-3, or is connected, or with an axle ring washer, or use anti-screw thread, or continuous with thrust bearing; The other end of described pulling bull stick 78, by thrust bearing 79, and link to each other with the pivoted frame 80 that draws that the labyrinth is arranged, a described termination of drawing the steel wire rope that is set with described backguy 81 on the pivoted frame 80, and another distal head of backguy links to each other with the unwrapping wire control stick 81b on the big handrail of mower limit; When unwrapping wire, backguy pulling bull stick referring to Fig. 7, makes on the several boss on the reel and moves, and throws off with the hole, several hole of line box cover 25-7, and reel is put one with respect to beating the grass the head capsule rotation and rolled off the production line; When beating the grass, whole moving head is with changeing, and reel does not rotate just not unwrapping wire with respect to the head capsule of beating the grass; Described the labyrinth arranged draw pivoted frame 80, be square frame shape, in order to not yielding, because of with monolateral with the passing of time easy-to-draw must the distortion; Be provided with the hole 80c of pulling bull stick below it, so that put thrust bearing 79 and insertion rod, its side is provided with slotted hole 80b, so that put pull wire head into; Be provided with centre bore 80d above it so that put backguy, particularly be provided with labyrinth 80a above it, it has a plurality of detours, connect described slotted hole and centre bore, so that a thick termination of the steel wire rope of backguy is put the square frame that draws pivoted frame 80 into by slotted hole 80b earlier, again the steel wire rope of backguy is taken a devious route along a plurality of detours of labyrinth 80a and enter centre bore, thereby be difficult for getting loose.

The circuit diagram of described series excited machine power-operated mower, as shown in Figure 2, mainly by insurance RC, K switch, inductance L 3, inductance L 4, capacitor C, and be provided with the series excited machine M of winding L 1 and winding L 2, and starting button AQ and handle 75, and diode Di, resistance R 1, R2, luminous tube LED, bobbin winoler and plugs and sockets are formed; The present invention specially is added with insurance RC, and it uses fuse, or uses electrothermal relay, or uses overcurrent protector, in the hope of safer; Why interior the having of power supply source insured, also add insurance? because power supply source also supplies many places, its insurance is often too big, just is not fit to this mower.

Referring to Figure 15, Figure 16 and Fig. 1, the head of described starting button AQ and handle 75, and diode Di, resistance R 1, R2, luminous tube LED, K switch and plug, and each part back-moving spring separately all are contained on the connector assembly 75b of band handle 75 of mower arm-rest frame; The head of described handle 75 is provided with eave tile; Described starting button AQ is provided with sliver QA2, and by the sliver briquetting QA1 that ins succession, also is provided with banking stop QA3; When pressing starting button AQ, and when pulling handle 75, the eave tile that the head of described handle 75 is provided with is being pressed the briquetting QA1 that start button AQ, and makes the briquetting QA1 that starts button AQ press K switch, could start; In the time will closing, as long as pull handle 75, but each part is separately with regard to elastic reset; Described diode Di, resistance R 1, R2, luminous tube LED only are the effects of an indicator lamp; One termination power of described winder, the other end of winder can join with the plug on the connector assembly 75b that is with handle 75, and connects motor by K switch.

The operator selects a kind of Winder of multiple damping mechanism that has promptly by the wheel housing assy, centrifugal slow restoring device, side piston damping unit, positional lock, and passing through on the shell of the pipe winding device formed of reverse blocking mechanism and the angle slot type damping mechanism on the racker had strong market potential and 18 is connected and support 19 that can little commentaries on classics in 180 degree is placed on the front portion of mower or the mode at middle part is assembled; As Fig. 1 or shown in Figure 3; Also can establish a vertical axis, and establish borehole jack at the middle part of support 19 and on vertical axis, assemble in the front portion of mower; Perhaps, establish a vertical axis at the middle part of mower, and establish the hole, be enclosed within on the vertical axis and assemble at the middle shaft part of winder; And the power supply and being fixed of having pegged graft; When the operator turns around in mowing, preferably allow line turn to, and do not turn to, will note not mixing pin in other words and get final product from the mower back from the mower front.Mix and near-far situation according to the meadow, the operator also can select the bobbin winoler with several or those several damping mechanisms, because of around fixing gear wheel 4, has living space and can place a plurality of pinions 9 and connect a plurality of damping mechanisms and positional lock.Perhaps can use described accumulator instead.Because describedly take turns housing assy by upper casing 13, last deep bid 12, disc spring clockwork spring 11, inner disc 5, gear wheel 4, main wheel 14, joint 15, lower wall 16, lower casing 17 has strong market potential 18, and support 19 is formed.Lower wall 16 and the inner disc 5 that is provided with rotating shaft is equipped with in the hole of the central shaft of described shell; Inner disc 5 is formed restoring device by disc spring clockwork spring 11 and last deep bid 12; Inserting little inner cap 21 on the inner disc 5, and fixedly be installed on the upper casing 13 by last little enclosing cover 22 again.Installing the end in the close center of circle of disc spring clockwork spring 11 on the groove on the axle of motionless inner disc 5, the outer ring of described disc spring clockwork spring is assemblied on the card post of edge of main wheel 14 of rotation, and uses the everywhere screens of deep bid 12 by the edge and cover.So gear wheel is motionless.When the operator spurs pipeline, because be equipped with wire terminal 15 on the main wheel 14, passing 2 rollers of racker by the tubulature line and pipeline in the wire terminal and winding on main wheel, and main wheel 14 and lower wall 16 fixedly fuse by screw, and by the big tubular axis in the center of lower wall 16 rotationally kink be inserted on the smooth outer shaft table of center bassoon of lower casing 17, so go up deep bid 12, main wheel 14, pipe joint 15, lower wall 16 rotate with respect to shell; Turn an end 30 of pin 10 along moving in the cam class groove of the bottom surface of damping box shell 3 by pinion 9 and rotating disk 6 drives; When stopping drawing, turn the pin end 30 of pin because of clockwork spring reaction meeting locking; Draw a little again and unclamp, pin end 30 does not have lock along outer ring recess, flexible pipe or cable under the reaction force of clockwork spring 11, automatic rewinding; If when too fast, the pinion that resembles the planetary gear effect 9 at a high speed makes small slide block 1 centrifugal stretching out, and reaches with the shell limit to contact and damping with valve piston 7.Describedly draw mutually and the involute face and the parabola face of the small slide block 1, the particularly peach shape body of small slide block 1 that stretch out along the slideway 6a of damping rotating disk 6, in single file with valve piston 7 and damping box shell 3 internal impacts by extension spring 2, engagement, slide, friction, all multiactions have been strengthened the damping effect that bounces back slowly.

Constantly the scheme of new design is in the winder that has used, motionless gear wheel 4 in the middle of utilizing, around it, can adorn the characteristics that pinion 9 rotates more, install another damping box shell additional, perhaps replace the damping unit of retraction slowly of usefulness, the present invention also can be described as trap stage clip mechanism and many damping mechanisms around first device, so install several damping boxes additional, select by customer requirement and the desired performance of product type.Again because described trap stage clip mechanism by pinion 9, by the close thread spindle 64 that pinion 9 is driven, trap 61, stage clip 62, damping box shell 63, damping lid 65 is formed; It is characterized in that: described close thread spindle 64 is provided with screw thread; Screw thread preferably adopts the closely-pitched standard thread, and its closely-pitched helps shortening the axle stroke, and its standard thread helps processing; Described trap 61 is provided with internal thread, so that link with close thread spindle 64 and move up and down; Described trap 61 is provided with a plurality of outer grooves, and preferably 4, so that slide mutually with a plurality of protruding guide rail 63a in the damping box shell 63; Described trap is equipped with described stage clip 62 for 61 times, and the other end of stage clip 62 contacts with the box of damping box shell 63 is interior; Described damping box shell 63 is assemblied on the main wheel 14; Described damping lid 65 be assemblied in damping box shell 63 above, so when main wheel 14 retraction, the close thread spindle 64 that pinion 9 is driven moves down trap 61, makes stage clip 62 add to be pressed in the box of damping box shell 63, plays damping action; Again when main wheel 14 when pipeline is pulled out and is reversed, the close thread spindle 64 that pinion 9 is driven makes and moves on the trap 61, and stage clip 62 is stressed in the box of damping box shell 63 less; So go round and begin again, be formed with the Winder of many damping mechanisms of stage clip mechanism.

In another damping box shell, be provided with the helical axis 106 that another identical pinion 9 drives, connect with inside spin friction wheel 105 with the spiral of helical angle greater than 23.5 degree; When axle just changeing hour wheel move down the friction shell at the bottom of, otherwise on move; Form the damping of the unidirectional mechanism of spiral the friction type of damper.

Simultaneously, in another damping box shell that installs additional, under the driving of the pinion 9 of several identical one of them that gear wheel 4 peripheral established more, 23 rotations of reverse blocking rotating disk; The reverse blocking mechanism that has the Winder of multiple damping mechanism, by reverse blocking rotating disk 23, reverse blocking switch block 24, torsion spring 26, bearing pin 25, pinion 9 is formed.The reverse blocking switch block 24 of the activity that a plurality of particularly bearing pin 25 suits of 4 interior insertions of uniform hole 23c of laying bearing pin 25 of described reverse blocking rotating disk, in a plurality of particularly 4 the uniform aperture 23b that lay torsion spring, insert at ordinary times under the effect of the torsion spring 26 of an end and the torsion spring other end thereof, the little cambered surface 24c of its reverse blocking switch block 24 does not touch the inwall of damping box shell, but the string face 24d of reverse blocking switch block 24 is near inwall, without hindrance when forward is pulled out in other words, the limit stop block 23a of the spacing prominent 24a of reverse blocking switch block 24 and limit resistance rotating disk match and.But when reverse retraction, reverse blocking switch block 24 will be subjected to the effect of centripetal force and the inwall that little cambered surface 24c that centrifugal deflection causes reverse blocking switch block 24 touches damping box shell takes place when speed is fast, cause the reverse blocking effect.

Because be located at the upper casing 13 of Winder, 2 holes of the guider after-poppet 51 of laying 2 roller shaft core caps 54 of the racker 53 in the exit of lower casing 17, all be changed to the oblong slots that angle a is arranged mutually as shown in figure 29,2 axle center so just having formed described roller shaft core cap when pipe is drawn out along angle groove 51a roller pine far away, and when drawing in along the angle slot type damping mechanism of the tight variable degree of tightness of the nearer roller of angle groove 51b.When the operator pulled out line, roller was subjected to outside friction component, made when the roller shaft core cap 54 of laying roller 55 is drawn out near along angle groove 51a; Again because the roller shaft core cap of laying in the angle groove of the guider after-poppet 51 of described racker 53 54, can be referring to Figure 24, the spacing by 2 original axle center changes moving distance into; The small extension spring hole 54c that the pulling block 54a that the outer Side of the circumference of each lid is provided with and each pulling block are provided with is inserted respectively by the two ends of the less extension spring 54b of pulling force that institute holds gently in the described small extension spring hole; Lay 2 rollers 55 in the described roller shaft core cap, and between two rollers movable pipeline is installed; The guider fore-stock 52 of described racker 53 and guider after-poppet 51 have just been formed i.e. as shown in figure 23 the oblong slots that angle a is arranged mutually of angle groove of laying the roller shaft core cap altogether, 2 axle center that so just formed described roller shaft core cap when pipe is drawn out along the angle groove 51a effect of roller pine far away.And line when retraction, because laying the angle a of the oblong slots that angle a is arranged mutually of roller shaft core cap (as shown in figure 23) in the angle groove spends between 23 degree 1, again owing to considering that pipeline is to turn left after advancing dish, and make described two limits that angle a is arranged mutually, its respectively with the angle of vertical line, be that left angle β is less than right angle γ, so during the retraction pipe, roller is subjected to inside friction component, make when the roller shaft core cap 54 of laying roller 55 is drawn near along angle groove 51b, the angle groove of laying the roller shaft core cap makes 2 axle center of roller shaft core cap close, and so just having formed nearer along angle groove 51b is the angle slot type damping mechanism of the tight variable degree of tightness of roller.

Because the technical scheme that the pipe winding device that ball position lock and many damping mechanisms are arranged of the present invention solves the problem of its optional position lock can be described as the ball position lock, the key of technological innovation is ball; The scheme of new design is in the winder that has used, motionless gear wheel 4 in the middle of utilizing, around it, can adorn the characteristics that pinion 9 rotates more, install the described pipe winding device that ball position lock and many damping mechanisms are arranged additional, it has the ball position lock by pinion 9, the lock core shaft 74 that is driven by pinion 9, ball 70, torsion spring 73, lock core 72, position lock box shell 71 is formed; Described position lock box shell 71 is assemblied on the main wheel 14, and described torsion spring 73 is enclosed within the lock core shaft 74, and normality packs tightly and puts; Described lock core 72 kinks be contained in described torsion spring 73 and lock core shaft 74 and the described position lock box shell 71 of packing in; Described lock core 72 is provided with eccentric heart-shaped locked groove, and off-centre is so that the catatrepsis of groove endosphere, and heart-shaped recessed bottom is the position for locking when ball enters; It is characterized in that: described ball 70 is smooth, preferably steel ball; Again because ball 70 possesses by six-freedom degree, i.e. the characteristic of three translational degree of freedom and three rotational freedoms, so when movable, ball just than turn pin or purl have still less point to torsional moment, and more difficultly block once in a while.Described torsion spring 73 is Mi Quan, and the cross section is circular, is convenient to process the end 73b of its anfractuose L shaped end 73a and U-shaped, is difficult for when also being convenient to work because of the square seamed edge that the reverses mandrel that weares and teares.Again because described torsion spring 73 its end 73a are L-shaped, so be beneficial to be stuck in described lock core 72 tops; And other end 73b takes the shape of the letter U, and two limits are arranged, so be beneficial to the promotion of described ball 70; And because of the end 73a of described torsion spring 73 is stuck on the described lock core 72, and the end 73b of described torsion spring 73 reaches in the square hole of close apex of heart-shaped locked groove of lock core 72, and contacts with described ball 70; Described ball 70 is movably arranged in the heart-shaped locked groove of the axial elongated slot 71a of position lock box shell 71 and lock core 72, and contact with the end 73b that is sleeved on lock core shaft 74 and reaches the torsion spring 73 of lock core 72, so that link and move up and down with the axial elongated slot 71a of described position lock box shell 71 with the heart-shaped locked groove of lock core 72, its target is to put in place and make the internal diameter of torsion spring Mi Quan become big as end 73b that described ball 70 pushes away described torsion spring 73, to unclamp the lock core shaft 74 that is driven by pinion 9, make the pipeline freedom; Fall the end 73b that lock-bit does not push away described torsion spring 73 and work as described ball 70, and the internal diameter of torsion spring Mi Quan is diminished,, make pipeline motionless to pack tightly the lock core shaft 74 that is driven by pinion 9; Thereby be formed with the Winder of ball position lock and many damping mechanisms.When the operator spurs pipeline, because be equipped with joint 15 on the main wheel 14, pressing wiring on the joint and wire-wound on the described fortunately main wheel, main wheel 14 and lower wall 16 fixedly fuse by screw, and by lower wall 16) the big tubular axis in center rotationally kink be inserted on the smooth outer shaft table of center bassoon of lower casing 17, so go up deep bid 12, main wheel 14, pipe joint 15, lower wall 16 rotate with respect to shell; Main wheel 14 drives pinion 9 when pulling out pipeline.When stopping drawing, described ball 70, because of the clockwork spring reaction, the heart-shaped locked groove (off-centre is so that the catatrepsis of groove endosphere) of the off-centre that can be provided with along described lock core 72, and run into heart-shaped recessed bottom, when entering, ball is to be in locking in the position of lock; Draw again a little and unclamp pipeline, do not have lock, flexible pipe or cable under the reaction force of clockwork spring 11, automatic rewinding.In some cases, excessive as the left-right rotation angle, at the axle middle part of winder, or install at aforesaid work on the vertical axis of usefulness, all can establish the joint of two slip ring carbon-bearings brushes, in order to protection some through the Brinell test of copper aluminum conductor and hard partially electric wire.

Claims

1. series excited machine power-operated mower, it is characterized in that existing moving head has the mower of winder again, be on hay mower, to be equipped with three big assemblies, the accumulator that promptly is provided with charging and inversion is pulled out bracket assembly, be provided with the cutter sweep assembly that pulling bull stick and moving head are arranged that is located at the mower middle part that series excited machine drags, and be provided with the winder assembly; The fan plastics tool rest of existing noise reduction porous and cutting edge also is transplanted to the nylon wire of the reel in the runner on the mower on the mower; Because of the series excited machine of biasing has been abdicated the central shaft position,, just can make the reel unwrapping wire with center backguy pulling bull stick; Nylon wire also is improved to band triangle spiral fluted noise reduction line; On mower, be equiped with multiple damping mechanism, promptly by centrifugal slow restoring device, side piston damping unit, positional lock and ball position lock, reverse blocking mechanism, trap stage clip damping mechanism, racker angle slot type damping mechanism complementary bobbin winoler; The mower circuit is mainly handled by starting button AQ and handle (75), and is equipped with insurance.

2. series excited machine power-operated mower according to claim 1, it is characterized in that described bracket assembly for battery, decide slide (90c) by the carrier base that is installed in lawnmower chassis, and the telescopic support alive (90) that is provided with slide bar (90a) and spacing (90b) is formed, the slide bar (90a) of described support alive (90) is sleeved on deciding in the slide (90c) of described carrier base, when be drawn out and by spacing (90b) location after, can place the described accumulator that has charger and inverter thereon.

3. series excited machine power-operated mower according to claim 1 is characterized in that the cutter sweep assembly that described series excited machine power-operated mower middle part is provided with, and is by not being contained in this center but the series excited machine of biasing is dragged; Cutter sweep has two kinds, and a kind of is the cutter that fan plastics tool rest is arranged, and another kind is a moving head; Described have fan plastics tool rest (85) to be provided with spline (85a), and its spline (82a) with big belt wheel (82) matches; Described tool rest 85 is provided with a plurality of fans (85d), and is provided with a plurality of small through hole (85c), and it is a hex hole; And described fan is provided with cutting edge (85b); Moreover described tool rest adds fine plastics with nylon.

4. series excited machine power-operated mower according to claim 1, it is characterized in that: the cutter sweep assembly that moving head and center backguy pulling bull stick are arranged that described series excited machine power-operated mower middle part is provided with, by interior framework (76), series excited machine (77), motor pulley (84), belt (83), big belt pulley (82), backguy (81), pulling bull stick (78), thrust bearing (79), what the labyrinth was arranged draws pivoted frame (80), and moving head is formed; And described moving head, the flake down that contains the line box base of the being otherwise known as assembly of beating the grass is by the head capsule of beating the grass (24-3), reel spring (25-1), reel (25-3), nylon wire (134), protective ring (123), line eye inserted sheet (25-6), line box cover (25-7) is formed; Described blade (127) is located on the circumference of mowing machine cut dish, and the time spent is not placed on blade cover (126) on the blade (127); Described interior framework (76) is contained in the top of cutting dish of lawnmower chassis, on the axle of the series excited machine (77) of biasing, is provided with motor pulley (84), and by belt (83), drives the big belt pulley that cut disk center (82) of center line on the chassis; Described big belt pulley (82) drives described moving head; The described big belt pulley (82) and the head capsule (24-3) of beating the grass, line eye inserted sheet (25-6), line box cover (25-7) links to each other successively, in the head capsule of beating the grass (24-3), pass through reel spring (25-1), be pressed with reel (25-3), be equiped with nylon wire (134) on the described reel (25-3), and protective ring 123; Described pulling bull stick 78 is connected with described reel (25-3); The other end of described pulling bull stick (78), by thrust bearing (79), and link to each other with the pivoted frame (80) that draws that the labyrinth is arranged, describedly draw a termination that is set with the steel wire rope of described backguy (81) on the pivoted frame (80), and another distal head of backguy links to each other with the unwrapping wire control stick (81b) of mower.

5. series excited machine power-operated mower according to claim 1, it is characterized in that: described the labyrinth arranged draw pivoted frame (80), it is square frame shape, be provided with the hole (80c) of pulling bull stick below it, slotted hole (80b) is established in its side, establishes centre bore (80d) above it, be provided with labyrinth (80a) above it, it has a plurality of detours, connects described slotted hole and centre bore, draws pivoted frame (80) to enter centre bore so that backguy is put into.

6. series excited machine power-operated mower according to claim 1 is characterized in that: the feature of described nylon wire (134) is to have notch (34a) on its cross section; Described notch is helical along nylon wire, and becomes five equilibrium uniform along circumference; And described notch is leg-of-mutton.

7. series excited machine power-operated mower according to claim 1 is characterized in that: the circuit of described series excited machine power-operated mower, mainly by insurance RC, K switch, inductance L 3, inductance L 4, capacitor C, and be provided with the series excited machine M of winding L 1 and winding L 2, and starting button AQ and handle (75), and diode Di, resistance R 1, R2, luminous tube LED, bobbin winoler and plugs and sockets are formed; The head of described handle (75) is provided with eave tile; Described starting button AQ is provided with sliver QA2, and by the sliver briquetting QA1 that ins succession, also is provided with banking stop QA3; When pressing starting button AQ, and when pulling handle 75, the eave tile that the head of described handle (75) is provided with is being pressed the briquetting QA1 that start button AQ, and makes the briquetting QA1 that starts button AQ press K switch, could start; In the time will closing, as long as pull handle (75), but each part is separately with regard to elastic reset.