CN201523569U

CN201523569U - Rechargeable pruning machine

Info

Publication number: CN201523569U
Application number: CN2009201963222U
Authority: CN
Inventors: 李爱良
Original assignee: NINGBO EAST TOOL CO Ltd
Current assignee: NINGBO EAST TOOL CO Ltd
Priority date: 2009-09-11
Filing date: 2009-09-11
Publication date: 2010-07-14
Anticipated expiration: 2019-09-11

Abstract

The utility model relates to a rechargeable pruning machine for pruning branches of trees, branches and leaves of flowers, box landscapes, fences and the like, and mainly comprising a grab handle, a battery pack, a control board component, a motor, a grab handle circuit board, a rocker arm switch, a self-locking push button, a movable cutting blade, a fixed cutting blade and the like. The motor outputs power which is transmitted to a screw rod sequentially via a speed reduction gear box and a main shaft gear shaft; the movable cutting blade is fixed on a nut meshed with the screw rod; the nut makes travel limit of axial movement through a travel switch and a microswitch; the pruning machine outputs larger torque via the screw rod and the nut which are meshed mutually, and therefore the pruning is convenient and labor-saving; and meanwhile, the pruning machine is further provided with a cutting edge pruning safety device so as to prevent fingers from being cut by the cutting blades when in pruning, thereby having safe and reliable use; the rear end of the grab handle is connected with an elongated handle in an insertion way, thereby being suitable for pruning at lower positions as well as pruning at high positions; the pruning cutting edge can rotate at a certain angle when pruning at the high positions, thereby having no limit on the standing position of an operator and improving the working efficiency; and the pruning machine further has the advantages of small volume and attractive appearance.

Description

Charge type brush cutter

Technical field

The utility model relates to a kind of beta pruning machine that is used to shear branch, relates to a kind of charge type brush cutter that can be applicable to simultaneously that lower and eminence are sheared specifically.

Background technology

Charge type brush cutter is mainly used in the branch of shearing trees, the branches and leaves of spending, box scape, hedge etc., can reduce working strength, increase work efficiency, the electronic beta pruning machine of Chu Shouing generally has following several structure in the market, a kind of disclosed China Patent No. is 200810213642.4 " clipping device ", be to utilize two blades that have a plurality of edges of a knife to do relatively reciprocating motion to shear continuously, this structure mainly is applicable to shear and is positioned at the large-area hedge of lower, branches and leaves etc., the shear efficiency height, but be not suitable for the shearing of single branch in the full wafer tree; Another kind of disclosed China Patent No. is 200820160637.7 " rechargeable electric clippers ", be that two hinged lever principles of utilizing of blade are carried out the single shearing, this structure is similar to traditional scissor construction, can be applicable to the shearing of single branch in the full wafer tree, but its shear history edge of a knife opens and can additionally increase overall volume, make complete machine be difficult for reaching in the grove and shear, especially this blade skids off in the edge of a knife when shearing than the fat tree branch easily, and shear effect is not very good; Also having a kind of disclosed China Patent No. is 99213524.9 " portable telescopic lopping shears ", be to adopt ledger-plate and relative ledger-plate to make forward and backward reciprocating knife section to constitute the shearing edge of a knife, therefore the branch that is sheared is difficult for skidding off from the edge of a knife, moving simultaneously, ledger-plate is in the rectilinear motion state when working, can additionally not increase machine volume, be convenient to from grove, shear single branch.Above-mentioned three kinds of structures respectively have its pluses and minuses, but the single branch in the relative shear grove, the third structure is more reliable undoubtedly, yet mostly structure is simple and crude for the beta pruning machine with the third structure of Chu Shouing in the market, profile is coarse, and knife section motion only is that the elastic force by spring carries out, must overcome spring force to open the edge of a knife by hand control promotion knife section when shearing branch, and then utilize spring restoring force drive knife section to reset and carry out the branch shearing, this process operation trouble effort, labour intensity is big, the people is easy to fatigue, influence operating efficiency greatly, in case the shearing force of the edge of a knife greater than spring force, the branch in the edge of a knife just can't be sheared, functional reliability is poor, and this class beta pruning machine do not possess the edge of a knife yet and shears safety device, helps the finger of branch to be hurt by blade easily during use, so there is potential safety hazard.Simultaneously, the beta pruning machine of above-mentioned three kinds of structures all can't be taken into account the shearing in lower or eminence simultaneously, and eminence influences by the standing place when shearing, and the beta pruning machine that uses is sheared the edge of a knife and all can't be made certain angle and rotate at present, so some branch promptly can't be sheared, and influences operating efficiency greatly.

Summary of the invention

Technical problem to be solved in the utility model be to overcome the defective of prior art and provide a kind of with use conveniently, laborsaving, high efficiency, good reliability, safe in utilization be the charge type brush cutter of first purpose; Be provided with plug-in prolongation handle arrangement to be applicable to the shearing of lower and eminence with the lever rear end, shear the edge of a knife when eminence is sheared and to do the certain angle rotation, make shear history not be subjected to the operator standing place to be restricted to the charge type brush cutter of second purpose.

Technical problem of the present utility model is achieved through the following technical solutions:

A kind of charge type brush cutter, comprise lever and the scissors bit that is installed in the lever front end, be provided with power brick, control panel assembly, motor and the lever wiring board of electrical connection in the described lever, lever is provided with the rocker switch and the self-locking push button of starter motor outward, be provided with the spring that pushing tow resets between this rocker switch and the lever, and the switch shrapnel of contact conducting lever wiring board; Described scissors bit comprises the ledger-plate that is installed in the lever front end, and be subjected to the motor and speed reducer structure to drive the knife section of making axially reciprocating along guide rail, constitute the shearing edge of a knife by moving, ledger-plate, described reducing gear output connects the main shaft tooth axle by end face bearing in the bearing block and the supporting of steel ball group, this main shaft tooth axle and screw rod are fixed, screw rod and nut engagement, and on nut fixing knife section, be provided with simultaneously the microswitch that nut moves spacing travel switch and triggered by travel switch on nut, this microswitch is connected with the control panel electrical component; Be provided with the edge of a knife in the described lever and shear safety device, this device comprise with the formed circuit connection structure of nameplate of ledger-plate, control panel assembly and two conductions that are electrically connected, and power brick in the tentacle protection system constitute jointly.

Described lever rear end is plugged with the prolongation handle, and this prolongation handle comprises the last coupling assembling that connects successively, last pipe, middle coupling assembling, following pipe and Handleset.

The described coupling assembling of going up comprises the fixing connector of going up pipe, this connector is provided with the rotary head that is rotationally connected, be to be respectively equipped with on rotary head and the connector to constitute to be rotationally connected and equipped circular groove and round platform, be plugged with lever in the rotary head, and be provided with the plug of pegging graft and switching on the power brick of lever, also be provided with the twist-lock assembly between connector and the rotary head simultaneously; Coupling assembling comprises the plug-in unit fixed cover that is located at down in the pipe in described, be plugged with the pipe lower end in this plug-in unit fixed cover, and being provided with the plug holder of being with plug-in unit, the while also is set with adapter sleeve outside upper and lower pipe junction and screw thread screws the lock tube that is connected outside the adapter sleeve; Described Handleset comprises the handle that is fixed on down the pipe lower end, and this handle is provided with rocker switch and self-locking push button outward, is provided with the spring that pushing tow resets between rocker switch and the handle, and the switch shrapnel of contact conducting handle wiring board; Described plug, plug-in unit and handle wiring board are electrically connected successively.

Described twist-lock assembly comprises the button that is installed in the rotary head and the big spring of pushing tow push-button reset, and described button is provided with convex shoulder, the corresponding locked groove that is provided with equipped convex shoulder in rotary head; Described big spring two ends difference pushing tow is in the spring base of button and rotary head.

The guide rail of the axially reciprocating of the relative ledger-plate of described knife section is to be provided with oval-shaped slot on knife section, and dog screw passes this oval-shaped slot and is fixed on the ledger-plate.

The installation of described ledger-plate and lever is to be fixed with blade holder at the lever inwall, and ledger-plate is fixed on this lever inwall through blade holder.

Described microswitch is divided into forward and backward microswitch, on the adjacent lever inwall that is installed in the forward and backward both sides of travel switch.

Described control panel assembly comprises five pins of grafting power brick and controls two relays of motor forward and backward.

Between described end face bearing and the bearing block, be equipped with support pad between steel ball group and the bearing block.

Described self-locking push button is provided with the contact locking or breaks away from baffle plate and the back-moving spring of opening rocker switch.

Compared with prior art, the utility model mainly is that the outputting power of reducing gear is passed to screw rod through the main shaft tooth axle of end face bearing and the supporting of steel ball group, and on screw rod, be engaged with nut, fixing knife section on the nut, and the formation nut moves back and forth spacing travel switch and microswitch, screw rod just during use, reverse turn drives knife section through nut and produces axially reciprocating, thereby constitute shearing with the ledger-plate that is fixed on the lever front end, screw rod, the nut engaged transmission has bigger output torque, so shear convenient, laborsaving, the machine of beta pruning simultaneously is provided with the edge of a knife and shears safety device, help the finger of branch just to be not easy to be hurt in use, avoid existing potential safety hazard by blade, use safer, reliably.The machine of this beta pruning simultaneously rear end also is provided with the prolongation handle of the spreading of can pegging graft, not only be applicable to that lower sheared, but also is applicable to that eminence shears, and shear the edge of a knife when eminence is sheared and to do the certain angle rotation again,, increase work efficiency so shear history is not limited by can the operator standing place.This beta pruning machine has also that volume is small and exquisite, the advantage of good looking appearance.

Description of drawings

Fig. 1 is a cutaway view of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is a contour structures schematic diagram of the present utility model.(rocker switch is last)

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is the structural representation of power brick.

Fig. 6 is the B-B cutaway view of Fig. 5.

Fig. 7 is the contour structures schematic diagram of self-locking push button.

Fig. 8 is the C-C cutaway view of Fig. 7.

Fig. 9 is the upward view of Fig. 7.

Figure 10 is the right view of Fig. 7.

Figure 11 is the left view of Fig. 7.

Figure 12 is for prolonging the handle cutaway view.

Figure 13 is the upward view of Figure 12.

Figure 14 is the D place enlarged drawing of Figure 12.

Figure 15 is the E place enlarged drawing of Figure 12.

Figure 16 is installed in cutaway view in the rotary head for button.

Figure 17 is the vertical view of Figure 16.

Figure 18 is the structural representation of button.

Figure 19 is the vertical view of Figure 18.

Figure 20 is installed in structural representation in the connector for button.

Figure 21 is installed in cutaway view in the connector for button.

Embodiment

To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.

As Fig. 1～shown in Figure 21,1. lever; 2. power brick; 3. dividing plate; 4. control panel assembly; 5. motor; 6. gear-box loam cake; 7. planetary gear; 8. ring gear; 9. gear-box lower cover; 10. flat axle; 11. support pad; 12. end face bearing; 13. main shaft tooth axle; 14. steel ball group; 15. back microswitch; 16. preceding microswitch; 17. blade holder; 18. ledger-plate; 19. knife section; 20. oval-shaped slot; 21. dog screw; 22. nut; 23. travel switch; 24. screw rod; 25. translot; 26. self-locking push button; 27. spring; 28. inner column; 29. switch shrapnel; 30. secondary planet frame; 31. primary planet carrier; 32. gear; 33. rocker switch; 34. motor output shaft; 35. the short pin of disjunctor; 36. relay; 37. nameplate; 38. lower casing; 39. fixture block; 40. upper casing; 41. short weld tabs; 42. lithium battery; 43. li-ion cell protection plate; 44. pole piece fender bracket; 45. pin; 46. pole piece wiring board; 47. baffle plate; 48 rotary heads; 49. button; 50. connector; 51. last pipe; 52. lock tube; 53. adapter sleeve; 54. plug-in unit; 55. following pipe; 56. handle; 57. handle wiring board; 58. back-moving spring; 59. plug holder; 60. plug-in unit fixed cover; 61. big spring; 62. plug; 63. lock-screw; 64. convex shoulder; 65. lever wiring board; 66. round platform; 67. circular groove; 68. spring base; 69. spring cavity; 70. bearing block.

A kind of charge type brush cutter comprises the lever 1 that grips for hand, and this lever such as Fig. 1～shown in Figure 4, are connected and fixed with screw and form after equipped mutually seam fastens mutually by the two halves plastic casing.The two sides that lever contacts with hand respectively is equipped with conductive nameplate 37; The lever bottom is equipped with rocker switch 33, the syndeton of this rocker switch and lever is closely similar with Wrench-type structure commonly used, mainly be to be provided with the short pin 35 of disjunctor at rocker switch one end, and in short pin is fitted in the pin-and-hole of lever shell to form rotational structure; rocker switch 33 other ends are provided with disjunctor inner column 28; spring 27 is installed on this inner column, and spring other end pushing tow is mainly used in the rocker switch 33 that makes after pushing and resets in the spring groove of lever 1 inwall; Be positioned at rocker switch middle part inner surface simultaneously and also be provided with the fixing and conductive switch shrapnel 29 of screw, this switch shrapnel contacts conducting with lever wiring board 65.

Adjacent rocker switch 33 1 sides are provided with the self-locking push button 26 of able to turn on or off rocker switch in the described lever 1, this self-locking push button such as Fig. 7～shown in Figure 11, and integral body is strip, two ends are the trapezoidal hole that trapezoidal shape also passes lever 1 both sides respectively and expose outside outward.Be provided with baffle plate 47 on the self-locking push button, this baffle plate contacts with rocker switch 33 1 ends that spring 27 is installed and forms latch-up structure, prevents that rocker switch from inwardly being pushed by mistake.On self-locking push button 26, also be provided with back-moving spring 58, this back-moving spring is installed in the conjoined spring chamber 69 of self-locking push button, back-moving spring two ends and spring cavity contact site respectively are provided with translot 25, the corresponding upper and lower card that respectively is provided with at lever 1 inwall, this card passes the two ends that the translot 25 on the spring cavity 69 contacts at back-moving spring 58, so no matter push which end that self-locking push button 26 exposes, back-moving spring 58 in the spring cavity 69 all by compression, in case unclamp pressing force, self-locking push button 26 will reset under back-moving spring 58 effects.The exposed junction of pushing the self-locking push button disengages baffle plate 47 and rocker switch 33 1 ends, this moment, rocker switch can carry out push action, starter motor, therefore, in fact self-locking push button 26 is exactly the safety device of rocker switch 33, avoids rocker switch to be pushed under abnormal operating state by mistake and work the mischief.

Power brick 2, control panel assembly 4, motor 5 and the lever wiring board 65 of electrical connection also are installed in the described lever 1; power brick such as Fig. 5, shown in Figure 6; be inserted into the rear end of lever 1 through del fixture block 39; it adopts the plug-in charging structure to change at any time with convenient, mainly is made of upper casing 40, lower casing 38, insulation spacer, short weld tabs 41, lithium battery 42, li-ion cell protection plate 43, insulating paper, battery plate, pole piece fender bracket 44, pole piece wiring board 46, pin 45 etc.Contain lithium battery charge and discharge protective and tentacle protection system in the li-ion cell protection plate 43.

Be separated by through dividing plate 3 between described control panel assembly 4 and the power brick 2, the control panel assembly comprises five pins of the turn-on battery bag of can pegging graft and controls two relays 36 of motor 5 forward and backwards.This control panel assembly is exactly the control centre of whole beta pruning machine; the both positive and negative polarity that connects motor 5 through two leads; before four leads are connected respectively to; back microswitch 16; on 15 the pin; lead is connected to blade holder 17 and fixes with screw; a lead is connected on two conductive nameplates 37 of lever 1 outer surface; with the blade holder 17 that is electrically connected; control panel assembly 4 and two conduction nameplate 37 formed circuit connection structures; and the edge of a knife that the tentacle protection system in the li-ion cell protection plate 43 constitutes this beta pruning machine jointly shears safety device, and this safety device can the generation effect when human body touches the edge of a knife.This is because human body self just is equivalent to the resistance about one 200 kilo-ohms; hold when holding handle; palm contacts two conductive nameplates 37 all the time; when finger touches moving because of carelessness; during ledger-plate; blade holder 17; control panel assembly 4; just formed a complete loop between conductive nameplate 37 and the human body; also just be equivalent in entire circuit, insert one 200 kilo-ohms resistance; tentacle protection system in the li-ion cell protection plate 43 will the output of instantaneous trip electric power make motor 5 stalls at this moment; so play the security protection effect, guarantee that effectively the operator is safe in utilization.And branch resistance is far longer than human body resistance, so even a hand catches branch also can not influence the operate as normal of beta pruning machine.

Described motor 5 is installed in the front portion of control panel assembly 4 as power take-off; Lever wiring board 65 is installed in the position of motor below over against rocker switch 33, and at the stationary contact that simultaneously is provided with two not conductings over against rocker switch, when pushing rocker switch and make two stationary contacts of switch shrapnel 29 contact, can be with the circuit turn-on on the lever wiring board to form electric connection structure.

Described motor output shaft 34 connects reduction gear box through gear 32, this reduction gear box is the reducing gear of motor power output, comprise the gear-box loam cake 6 that is fixed on the motor 5 and cover the gear-box lower cover 9 that on gear-box, covers, be provided with planetary gear 7, I and

II planet carrier

31,30 and the ring gear 8 of gears engaged in the reduction gear box.After this reduction gear box slows down is exportable low speed power, also the output torque of motor 5 is amplified with output than high pulling torque simultaneously.

The secondary planet frame 30 of described reduction gear box is provided with flat hole, the flat axle 10 of the equipped main shaft tooth axle 13 in this flat hole and forming is in transmission connection, welding was fixing after main shaft tooth axle 13 was threaded with screw rod 24 again simultaneously, main shaft tooth axle is with end face bearing 12 and 14 supportings of steel ball group, this end face bearing and steel ball group are installed in the bearing block 70 simultaneously, be provided with support pad 11 between end face bearing and the bearing block, when the beta pruning machine when shearing branch, reaction force on the knife section 19 is by screw rod 24, when being delivered on the end face bearing 12, main shaft tooth axle 13 can cushion by this support pad 11, end face bearing 12 structures are set simultaneously also can reduce the frictional force of main shaft tooth axle when high speed rotating greatly, make screw rod 24 at utmost to be delivered to the torsion of motor 5 on the knife section 19, also reduce the friction noise between the parts, reduce the heating phenomenon; Also be provided with support pad 11 between steel ball group 14 and the bearing block 70, when retreating, opens when shearing the edge of a knife by knife section 19, its reaction force is by screw rod 24, when main shaft tooth axle 13 is delivered to steel ball group 14, play a cushioning effect by this support pad 11, steel ball group structure also can reduce the frictional force of main shaft tooth axle when high speed rotating greatly simultaneously, the power brick electric weight that makes the knife section rollback be consumed reduces, increase the complete machine working time, also have friction noise that reduces between the parts and the function that reduces the heating phenomenon.

Be engaged with nut 22 on the screw rod, the nut back end round pin is fixed with travel switch 23, and the front end screw is knife section 19 fixedly, and this knife section is provided with oval-shaped slot 20; Described travel switch 23 forward and backward both sides are respectively equipped with and the fixing forward and

backward microswitch

16,15 of lever 1 inwall, and the trip switch and forward and backward microswitch constitute nut 22 forward and backward mobile stroke limits.Constitute the shearing edge of a knife by knife section 19 and ledger-plate 18, this ledger-plate is fixed on the blade holder 17, blade holder is fixed on lever 1 inwall through screw again, can be ledger-plate 18 the stressed enough intensity that provides is provided, the oval-shaped slot 20 that a location screw 21 passes knife section 19 is fixed on the guide rail structure that forms knife section 19 axially reciprocatings on the ledger-plate 18.

This beta pruning machine just enters holding state after loading onto power brick 2, this moment is no matter which position knife section 19 is positioned at, just changeing relay all can control motor 5 and just changeing to drive the original position that nut 22 returns to rearmost end, this original position retreats till triggering back microswitch 15 with the travel switch on the nut 23, the stall under the microswitch control of back of motor 5 this moment.That is to say that when whole beta pruning machine is loaded onto power brick 2 and is in holding state the edge of a knife moving, ledger-plate all is to be in open mode all the time, this moment, this beta pruning machine just can normally use.When using, the beta pruning machine grips lever 1 with the right hand, the shearing edge of a knife that left hand is helped branch to put into to open also is close to by ledger-plate 18, it is inside just can to push rocker switch 33 after finger control self-locking push button 26 is opened, make the stationary contact on the switch shrapnel 29 conducting lever wiring boards 65 of rocker switch, motor 5 counter-rotatings will be worked and control to the relay that reverses this moment, nut 22 on the screw rod 24 move forward vertically and promote knife section 19 dwindles gradually and ledger-plate 18 between the shearing edge of a knife, branch is promptly cut; When nut 22 travels forward before triggering microswitch 16, should will control motor 5 stalls by preceding microswitch, after decontroling rocker switch 33 this moment, just changeing relay adapter work at once and control motor and just changeing nut 22 is returned to original position again again, make that shear knife between knife section 19 and the ledger-plate 18 is salty newly to be opened, repeat just can carry out after aforesaid operations process the branch shearing work of a new round this moment again, because knife section is driven by motor 5 and shears, screw rod, the nut engaged transmission has bigger output torque, so shearing force is big and use convenient laborsaving.

This beta pruning machine structure is applicable to the shearing of lower forest, when branch is positioned at the eminence staff and reaches, also can prolong handle by pegging graft in the lever rear end, this prolongs handle as shown in Figure 12 and Figure 13, mainly by the last coupling assembling that connects successively, go up pipe 51, middle coupling assembling, following pipe 55 and Handleset and form.

Described upward coupling assembling comprises that screw is fixed on the connector 50 and the rotary head 48 that is rotatably connected on the connector of pipe 51 upper ends as shown in figure 14, and described connector such as Figure 20, shown in Figure 21 which is provided with round platform 66; Described rotary head 48 is as Figure 16, shown in Figure 17, which is provided with the circular groove 67 equipped mutually with round platform 66, be fitted in through circular groove and promptly form rotation connection structure on the round platform, be plugged with in the jack of rotary head with the fixing lever 1 of lock-screw 63, the power brick 2 in the lever again with rotary head in plug 62 energising of pegging graft.Also be provided with the twist-lock assembly of rotary head simultaneously between connector 50 and the rotary head 48, this twist-lock assembly comprises button 49 and the big spring 61 that is installed in the rotary head 48, this big spring two ends difference pushing tow is in the spring base 68 of button and rotary head, the usefulness that resets of pushing as button 49, button such as Figure 18, shown in Figure 19, be hat-shaped structure, hat is with four convex shoulders 64 that are " ten " word cross-distribution outward, corresponding four locked grooves that in rotary head 48, are provided with equipped four convex shoulders, constitute the twist-lock of rotary head 48 in the time of in four convex shoulders 64 lay respectively at four corresponding locked grooves, this moment, rotary head promptly can't rotate relative to connector; When pushing button 49 and drive convex shoulders 64 and break away from locked grooves, just rotatable 90 ° and reenter locked groove of rotary head 48.This rotational structure mainly is applicable to the shearing of some special branches, for example at the edge of a knife with prolonging that handle is in same straight line can't shear the time, can the edge of a knife be turned to and prolong handle and be 90 ° of positions and shear by rotary head 48, so shear history is not limited by the operator standing place, the very hommization of this structural design, and result of use is more reliable.

Coupling assembling as shown in figure 15 in described, comprise the plug-in unit fixed cover 60 that is installed in down in pipe 55 upper ends, be plugged with pipe 51 lower ends in this plug-in unit fixed cover, also be provided with the plug holder 59 of band plug-in unit 54, simultaneously outside upper and lower pipe junction, be set with adapter sleeve 53, this adapter sleeve is stuck in down pipe 55 upper ends by interior shoulder, and is connected with lock tube 52 at the adapter sleeve external screw thread, and lock tube has the taper hole structure.When lock tube during to the precession of adapter sleeve screw thread, the taper hole compressing adapter sleeve 53 by lock tube is to fix upper and lower pipe; After the back-out of lock tube 52 screw threads made taper hole break away from the adapter sleeve compressing, upper and lower pipe can remove separately collection, instant packed transportation.

Described Handleset comprises that screw is fixed on down the handle 56 of pipe 55 lower ends, handle is provided with rocker switch 33 and self-locking push button 26 outward, rocker switch and self-locking pushing button structure on the structure of this rocker switch and self-locking push button and the lever 1 are identical, repeat no more; set switch shrapnel 29 in the rocker switch; be mainly used in contact conducting handle wiring board 57 herein; this handle wiring board simultaneously again with middle coupling assembling in plug-in unit 54 and the plug 62 in the last coupling assembling be electrically connected conducting successively; therefore when the beta pruning machine install prolong handle after; push the rocker switch 33 on the handle 56, the duty of beta pruning machine and the rocker switch of directly pushing on the lever are identical.

Small and exquisite, the good looking appearance of the utility model volume is mainly used in building the single branch in the grove, and shearing force is big, and handiness is laborsaving, and the edge of a knife of setting up is sheared safety device, helps the finger of branch to be hurt by blade when avoiding using, and eliminates safe hidden trouble; Plug-in prolongation handle arrangement was so that pruning machine not only had been applicable to lower shears, but also is applicable to that eminence shears, and prolong handle and have the rotary head structure and can make things convenient for again multi-angle to shear branch and not affected by the operator standing place, so this pruning machine has the advantage of using light and handy, convenient, laborsaving, high efficiency, good reliability, use safety.

Claims

1. charge type brush cutter, comprise lever (1) and be installed in the scissors bit of lever front end, be provided with power brick (2), control panel assembly (4), motor (5) and the lever wiring board (65) of electrical connection in the described lever, outer rocker switch (33) and the self-locking push button (26) that is provided with starter motor (5) of lever (1), be provided with the spring (27) that pushing tow resets between this rocker switch and the lever (1), and the switch shrapnel (29) of contact conducting lever wiring board (65); Described scissors bit comprises the ledger-plate (18) that is installed in lever (1) front end, and is subjected to motor (5) and reducing gear to drive the knife section (19) of making axially reciprocating along guide rail, constitutes the shearing edge of a knife by moving, ledger-plate, it is characterized in that:

A, the output of described reducing gear connect the main shaft tooth axle (13) by end face bearing (12) in the bearing block (70) and steel ball group (14) supporting, this main shaft tooth axle and screw rod (24) are fixing, screw rod and nut (22) engagement, and on nut fixing knife section (19), be provided with simultaneously the microswitch that nut moves spacing travel switch (23) and triggered by travel switch on nut, this microswitch is electrically connected with control panel assembly (4);

Be provided with the edge of a knife in b, the described lever (1) and shear safety device, this device comprise with the formed circuit connection structure of nameplate (37) of ledger-plate (18), control panel assembly (4) and two conductions that are electrically connected, and the interior tentacle protection system of power brick (2) constitute jointly.

2. charge type brush cutter according to claim 1, it is characterized in that described lever (1) rear end is plugged with the prolongation handle, this prolongation handle comprises the last coupling assembling that connects successively, last pipe (51), middle coupling assembling, following pipe (55) and Handleset.

3. charge type brush cutter according to claim 2, it is characterized in that the described coupling assembling of going up comprises the fixing connector (50) of going up pipe (51), this connector is provided with the rotary head (48) that is rotationally connected, be to be respectively equipped with on rotary head and the connector to constitute to be rotationally connected and equipped circular groove (67) and round platform (66), be plugged with lever (1) in the rotary head (48), and be provided with the plug (62) of pegging graft and switching on the power brick (2) of lever, also be provided with the twist-lock assembly between connector (50) and the rotary head (48) simultaneously; Coupling assembling comprises the plug-in unit fixed cover (60) that is located at down in the pipe (55) in described, be plugged with pipe (51) lower end in this plug-in unit fixed cover, and being provided with the plug holder (59) of being with plug-in unit (54), the while also is set with adapter sleeve (53) outside upper and lower pipe junction and screw thread screws the lock tube (52) that is connected outside the adapter sleeve; Described Handleset comprises the handle (56) that is fixed on down pipe (55) lower end, this handle is provided with rocker switch (33) and self-locking push button (26) outward; be provided with the spring (27) that pushing tow resets between rocker switch and the handle, and the switch shrapnel (29) of contact conducting handle wiring board (57); Described plug (62), plug-in unit (54) and handle wiring board (57) are electrically connected successively.

4. charge type brush cutter according to claim 3, it is characterized in that described twist-lock assembly comprises the button (49) that is installed in the rotary head (48) and the big spring (61) of pushing tow push-button reset, described button is provided with convex shoulder (64), the corresponding locked groove that is provided with equipped convex shoulder in rotary head (48); Described big spring (61) two ends difference pushing tow is in the spring base (68) of button (49) and rotary head (48).

5. charge type brush cutter according to claim 1, the guide rail that it is characterized in that the axially reciprocating of the relative ledger-plate (18) of described knife section (19) is to be provided with oval-shaped slot (20) on knife section (19), and dog screw (21) passes this oval-shaped slot (20) and is fixed on the ledger-plate (18).

6. charge type brush cutter according to claim 1 is characterized in that the described ledger-plate (18) and the installation of lever (1) are to be fixed with blade holder (17) at the lever inwall, and ledger-plate (18) is fixed on this lever (1) inwall through blade holder.

7. charge type brush cutter according to claim 1 is characterized in that described microswitch is divided into forward and backward microswitch (16,15), on adjacent lever (1) inwall that is installed in the forward and backward both sides of travel switch (23).

8. charge type brush cutter according to claim 1 is characterized in that described control panel assembly (4) comprises five pins of grafting power brick (2) and two relays (36) of control motor (5) forward and backward.

9. charge type brush cutter according to claim 1 is characterized in that between described end face bearing (12) and the bearing block (70), is equipped with support pad (11) between steel ball group (14) and the bearing block (70).

10. charge type brush cutter according to claim 1 is characterized in that described self-locking push button (26) is provided with the contact locking or breaks away from baffle plate (47) and the back-moving spring (58) of opening rocker switch (33).