CN202759859U - Plant cropper - Google Patents

Abstract

Disclosed is a plant cropper. The plant cropper comprises a working assembly, a drive device, a drive mechanism, a main engine shell body, and a handle device. The working assembly is provided with a cutting element and a supporting plate for supporting the cutting element. The drive mechanism is arranged between the drive device and the working assembly and is applied to delivering power of the drive device to the cutting element. The main engine shell body is applied to housing the power drive device. The handle device is connected with the main engine body. The handle device comprises an extending rod and a holding handle which is connected with the end portion of the extending rod. The extending rod comprises a plurality of fulcrum bars which longitudinally extends. The fulcrum bars can be connected in detachable mode. The operation of plant cropper is flexible.

Description

Plant pruning machine

Technical field

The utility model relates to a kind of power tool, especially relates to a kind of plant pruning machine.

Background technology

At present, occur multiple instrument for the plant pruning on the market, for example scissors is used for pruning some relatively tiny branches and leaves.Also have pruner to be commonly used to prune relative thick trees etc. with chain saw.

Traditional chain saw comprises one by chain and is used for the working head that the gripper shoe of support chains forms, chain is driven by motor, rotate around gripper shoe, traditional chain saw also comprises the main handle that is positioned at the working head rear portion, the assist handle between working head and main handle.In cutting process, the operator grips main handle on the other hand, and another hand grips assist handle, carries out smoothly in order to guarantee cutting, and operator's hand need to revolve towards cut direction and add a pressure.When needs cut the plant of eminence, connect an extension rod at the main handle terminal part, extension rod one end is used for being connected with chain saw, the other end is used for gripping, and be provided with the switch triggering part that electrically conducts with chain saw at the position that is fit to grip, be provided with the wire that electrically conducts with switch triggering part and chain saw in the extension rod, and exposing of connecting of this wire setting and chain saw led slotting.Thisly lead the place that plug in extension rod is not suitable for cutting-height is proposed different demands with exposing, may cause safety problem simultaneously.

The utility model content

Technical problem to be solved in the utility model provides a kind of plant pruning machine of flexible operation.

In order to address the above problem, the utility model provides a kind of plant pruning machine, comprising: work package has cutting element and is used for supporting the gripper shoe of described cutting element; Drive unit; Transmission mechanism is arranged between drive unit and the work package, is used for transmission of power with drive unit to cutting element; Accommodate the host shell of described Power Drive Unit; The gripping handle that described handle apparatus comprises extension rod and is connected in the extension rod end, described extension rod comprise a plurality of poles that extend longitudinally, and described pole removably connects.

Preferably, described pole comprises extension bar and female connector, the host cavity that described female connector is provided with opening and is extended to female connector inside by opening, be provided with inserted sheet in the host cavity, extension bar is provided with sleeve, and when extension bar and female connector connected, described inserted sheet and sleeve were electrically connected.

Preferably, described pole further comprises extension bar and female connector relative position is advanced line-locked retaining mechanism.Described retaining mechanism adopts the cam lock holding mechanism that is arranged on the female connector, and described cam lock holding mechanism comprises the cam member that is pivotally connected to female connector, and the locking wrench that connects cam member.

On the described female connector opening is set, the position near opening in the host cavity is provided with pressing plate, and the elastic component that is supported in the pressing plate bottom, and pressing plate is along the female connector longitudinal extension.Between described pressing plate and the cam member leaf spring is set, when by locking wrench cam member being switched to lock pressure position, the cam surface of cam member pushes leaf spring and by leaf spring extruding force is passed to pressing plate, makes by the described cam lock holding mechanism of pressing plate the position of inserted link with respect to sleeve locked.

Preferably, described elastic component comprises a pair of spring that vertically is arranged at the female connector inwall, and described spring is supported in respectively the two ends of pressing plate.

Described pressing plate has the protuberance that extends to the accepting hole direction, and described protuberance is used for contacting with plunger surface.

Preferably, described protuberance comprises two, and described protuberance is arranged at respectively the two ends of pressing plate bottom.Described gripping handle comprises main handle, and main handle has connecting portion and holding part, and switch triggering mechanism is set on the holding part, and start-up operation when being convenient to grip, connecting portion are used for removably connecting with pole or host shell.Described gripping handle further comprises the auxiliary-handle that relative main handle pivots and arranges.

Preferably, described cutting element is flexible chain, and described flexible chain rotates around gripper shoe.

The handle apparatus of plant pruning machine of the present utility model has been owing to having adopted the extension rod that removably is formed by connecting by a plurality of poles, but therefore for different operating mode demand flexible Application, and installation and convenient disassembly; Between each pole, adopted in addition built-in electrical connector, so that operate safer.

Description of drawings

Below in conjunction with accompanying drawing the utility model is done further detailed description.

Fig. 1 is the main apparent direction schematic diagram of the chain saw of the utility model the first embodiment.

Fig. 2 is the partial structurtes schematic diagram of the chain saw extension rod that discloses of Fig. 1.

Fig. 3 is the local enlarged diagram of the chain saw extension rod retaining mechanism that discloses of Fig. 2.

Fig. 4 is along the cross-sectional schematic of A-A direction among Fig. 1.

Fig. 5 is along the structural representation of B after removing partial shell, gripper shoe and sprocket wheel among Fig. 4.

Fig. 6 is along the cross-sectional schematic of D-D direction among Fig. 5.

Fig. 7 is the structural representation of crank connecting among Fig. 6.

Fig. 8 is along the cross-sectional schematic of E-E direction among Fig. 5.

Fig. 9 be among Fig. 4 along the cross-sectional schematic of C-C direction, this moment, ratchet-pair was in the first duty.

Figure 10 be among Fig. 4 along the cross-sectional schematic of C-C direction, this moment, ratchet-pair was in the second duty.

Figure 11 be among Fig. 4 along the cross-sectional schematic of C-C direction, this moment, ratchet-pair was in the third duty.

Among the figure:

2. host shell 10. chain saws 12. work packages

14. gripper shoe 16. flexible chains 18. electro-motors

19. motor drive shaft 19a. cone tooth 20. first output shafts

21. bevel gear 24. gear-boxes 25. feed boxes

26. guard shield 28. upper shields 30. lower shields

32. the first receiving space 34. second receiving spaces 40. openings

42. host cavity 46. inserted sheets 47. sleeves

48. power line 50. extension bars 52. female connectors

58. extension rod 56. handle apparatus 58a. poles

60. gripping handle 61. main handle 61a. connecting portions

61b. holding part 62. auxiliary-handles 68. switch triggering mechanisms

70. cam lock holding mechanism 70a. cam member 70b. locking wrench

71. opening 72. leaf springs 73. pressing plates

74. protuberance 75. springs 78. tower springs

80. driving-belt 81. small pulleys 82. large belt wheels

83. turning cylinder 84. fixed gears 85. duplicate gears

86. duplicate gear 87. duplicate gears 88. planetary gears

89. internal gear 90. sprocket wheels 92. planet carriers

93. axle sleeve 94. gear wheels 95. cranks

96. ratchet-pair 97. ratchet 97a. hook tooths

98. ratchet 99. sour jujube seats 100. fixed axis

101. torsion spring 102. spline dishes 103. cam pins

104. connecting rod 105. toggles 106. terminal pads

108. spline axle 110. is decided rotating shaft 120. controlling organizations

121. block 122. support bars 123. support springs

124. pin 125. moving block 125a. pivots

126. groove 127. openings 130. driving members

130a. terminal 132. pivots of head end 130b.

135. bearing pin 135a. bearing pin axis 136. torsion springs

X1. motor axis X2. output shaft axis X 3. rotations

X4. fixed axis axis X 5. is decided shaft axis

Embodiment

With reference to Fig. 1, a kind of chain saw 10 comprises the work package 12 for processing work, and work package 12 comprises gripper shoe 14 and the cutting element that is installed on the gripper shoe 14.In the present embodiment, cutting element is flexible chain 16, and this flexible chain 16 is installed on the periphery of gripper shoe 14, and can rotate around this gripper shoe 14, and the plane at gripper shoe 14 places is the gripper shoe plane.Certainly, cutting element is not limited to flexible chain, also can be various sawtooth, and gripper shoe can be set to carry out for fixing or support sawtooth saw blade or the saw blade of cutting work.

Chain saw 10 comprises host shell 2, connecting handle device 56 removably on the host shell 2.The gripping handle 60 that handle apparatus 56 comprises extension rod 58 and is connected in extension rod 58 ends.Wherein extension rod 58 comprises a plurality of pole 58a that extend longitudinally, and the operator can select the pole 58a of varying number to be used in combination so that the operating mode demand of the applicable cutting of the length of extension rod 58 differing heights.Certainly, Handleset 60 also can with 2 direct detachable connections of host shell.Gripping handle 60 comprises main handle 61 and auxiliary-handle 62.Wherein main handle 61 has connecting portion 61a and holding part 61b, and switch triggering mechanism 68 is set on the 61b of holding part, and start-up operation when being convenient to grip, connecting portion 61a are used for removably connecting with pole 58a or host shell 2.Wherein auxiliary-handle 62 pivots are arranged at the connecting portion 61a of main handle 61, so that auxiliary-handle 62 is realized adjustable with respect to the position of main handle 61 and extension rod 58 or host shell 2.Be provided with the guard shield 26 of accommodating work package 12 on the host shell 2, in the present embodiment, guard shield 26 adopts the U-shaped guard shield, and the U-shaped guard shield comprises upper shield 28 and lower shield 30, and upper shield has the first receiving space 32, and lower shield has the second receiving space 34.

With reference to shown in Figure 2, pole 58a comprises extension bar 50 and female connector 52, and female connector 52 1 ends are provided with opening 40 and by the host cavities 42 of opening to female connector 52 inner extensions, extension bar 50 is fixed and received to female connector 52 other ends.Extension bar 50 is extended with certain length, and the elongated end of extension bar 50 is free end, and therefore when a plurality of pole 58a connected, the free end of extension bar 50 can be accommodated in the female connector 52 of another pole 58a.Be furnished with wire 48 in the inner chamber of extension bar 50, the end of extension bar 50 in female connector 52 is provided with the inserted sheet 46 that extends to host cavity, and inserted sheet 46 is electrically connected with wire 48.Extension bar 50 is in be provided with the sleeve 47 that is electrically connected with wire 48 in the inner chamber of end.Inserted sheet 46 so arranges with sleeve 47, so that when a plurality of pole 58a are used in combination, as long as insert its host cavities 42 with extension bar 50 free ends of the first pole 58a from female connector 50 openings 40 of the second pole 58a, be positioned at extension bar 50 free-ended sleeves 47 and just can effectively set up with the inserted sheet 46 that is positioned at host cavity 42 and be electrically connected.Be respectively arranged with retaining mechanism on each pole 58a, lock by the relative position of retaining mechanism with two branch bars.When needs connect a plurality of pole 58a, can carry out with reference to said method and step.In the present embodiment, what retaining mechanism adopted is the cam lock holding mechanism 70 that is arranged on the female connector 52.

With further reference to Fig. 3, cam lock holding mechanism 70 comprises the cam member 70a that is pivotally connected to female connector 52, and the locking wrench 70b that connects cam member 70a.Opening 71 is set on the female connector 52, and when the relative female connector 52 of cam member 70a was switched to locked position, the cam surface of cam member 71 entered host cavity 42 by opening 71.Position near opening 71 in the host cavity 42 is provided with pressing plate 73, and pressing plate 73 in addition, arranges leaf spring 72 between pressing plate 73 and the cam member 71 along female connector 52 longitudinal extensions and by a pair of spring 75 resiliency supported that are arranged at female connector 52 tube walls.When by locking wrench 72 cam member 71 being switched to lock pressure position, the cam surface extruding leaf spring 72 of cam member 71, by leaf spring 72 extruding force is passed to pressing plate 73, pressing plate 73 overcame spring 75 as a clamping element and acted on and produce in the radial direction certain displacement this moment, thereby inserted link 50 is pressed in the sleeve 52, and inserted link 50 locks with respect to the relative position of sleeve 52.Leaf spring 72 here mainly is the effect of playing the backlash compensation between cam member 71 and the pressing plate 73, is conducive to reduce because the insufficient clamping force that design tolerance causes.On the contact-making surface of pressing plate 73 and inserted link 50 two protuberances 74 are set, protuberance 74 protrudes and is positioned at the two ends of contact-making surface to inserted link 50 directions, and such clamp force distribution that is arranged so that pressing plate 73 is in whole pressing plate 73 length directions.

With reference to Fig. 4, Fig. 5, be provided with Power Drive Unit in the host shell 2 of chain saw 10, the Power Drive Unit in the present embodiment adopts only electro-motor 18.Electro-motor 18 has motor drive shaft 19, and an end of motor drive shaft 19 arranges cone tooth 19a, and motor drive shaft 19 has the motor axis X1 with gripper shoe plane almost parallel.Transmission mechanism comprises the main transmission that is positioned at gear-box 24, and the inferior power train that is positioned at feed box 25, and main transmission is used for transmission of power with electro-motor 18 to cutting element 16, inferior power train with the transmission of power of electro-motor 18 to gripper shoe 14.Wherein main transmission is connected by transmission device with time power train, adopts driving-belt 80 to connect in the present embodiment.Main transmission comprises and the bevel gear 21 of cone tooth 19a engaged transmission, by the first output shaft 20 of bevel gear 21 driven rotary, and by the sprocket wheel 90 of the first output shaft 20 driven rotary.Sprocket wheel 90 cooperates to drive flexible chain 16 with flexible chain 16 and rotates around gripper shoe 14.Wherein bevel gear 21 is sheathed on the first output shaft 20 and relative the first axle shaft 20 connects non-rotatingly.When motor axial cone tooth 19a drove bevel gear 21 rotation, the first output shaft 20 was with bevel gear 21 synchronous rotaries, and the first output shaft 20 has the first output shaft axis X 2.The first axle shaft 20 has two ends, its middle sprocket 90 is connected in an end near the first axle shaft 20 of work package 12, band movable sprocket 90 rotations when 20 rotation of the first axle shaft are positioned at the gripper shoe 14 outer flexible chains that center on 16 around gripper shoe 14 rotations thereby drive.Another end of the first axle shaft 20 is away from work package 12 and stretch out in gear-box 24 outsides, and small pulley 81 without another end that is connected in the first axle shaft 20 with relatively rotating, and the periphery of small pulley 81 and driving-belt 80 connect.

With further reference to Fig. 5, shown in Figure 6, inferior power train comprises the gear drive that is arranged in the feed box 25, the ratchet-pair 96 that is connected with gear drive, the toggle 105 that is connected with ratchet-pair 96, and the terminal pad 106(that is connected with toggle 105 is with reference to Fig. 4).Wherein gear drive is by driving-belt 80 transmissions, gear drive comprises the large belt wheel 82 that is connected by driving-belt 80, with large belt wheel 82 without rotating shaft 83 in relative rotation, fixed gear 84 by rotating shaft 83 driven rotary, by the duplicate gear 86 of fixed gear 84 drivings, by the duplicate gear 85 of duplicate gear 86 drivings, by the duplicate gear 87 of duplicate gear 85 drivings, by the planet circular system of duplicate gear 87 drivings, by the gear wheel 94 of planet circular system driving.Wherein large belt wheel 82 is arranged on the turning cylinder 83, and turning cylinder 83 has rotation X3.Wherein fixed gear 84 relative rotation axis 83 nothings connect rotationally, duplicate gear 85 and fixed gear 84 coaxial settings, but duplicate gear 85 relative rotation axi line X 3 rotatably arrange.Duplicate gear 86 is arranged on the fixed axis 100 coaxially with duplicate gear 87, and can distinguish relative fixed axis axis X 4 rotations.Wherein planet circular system comprises the planetary gear 88 that is driven rotation by duplicate gear 87, with the internal gear 89 of planetary gear 88 engaged transmission, is driven the planet carrier 92 of rotation by internal gear 89.Planet carrier 92 engaged transmission of gear wheel 94 and planet circular system.In addition, be arranged with spline dish 102 on the fixed axis 100, internal gear 89 operationally with the position of spline dish 102 engagement and with position that spline dish 102 separates between conversion (with reference to Fig. 6).Planet carrier 92 output low speed during internal gear 89 engagement spline dish 102, then planet carrier 92 output was at a high speed when internal gear 89 separated with spline dish 102, like this, by adjusting the position of internal gear 89 relative spline dishes 102, planet circular system can select to export different rotating speeds, thereby realizes the speed governing of time power train.In addition, be provided with the trigger mechanism (not shown) that control internal gear 89 carries out position adjustments on the host shell 2, the operator realizes the planet circular system output speed is regulated control by trigger mechanism.Gear wheel 94 is sheathed on to be decided in the rotating shaft 110, decides rotating shaft 110 and has the shaft axis of deciding X5, and gear wheel 94 can be decided shaft axis X5 rotation relatively.The first output shaft 20, turning cylinder 83, fixed axis 100, decide rotating shaft 110 and be arranged in parallel respectively.

With reference to Fig. 6, shown in Figure 11, ratchet-pair 96 comprises the ratchet 97 by gear wheel 94 driven rotary, is driven the sour jujube seat 99 of rotation by ratchet 97.Between ratchet 97 and the sour jujube seat 99 ratchet 98 is set.Wherein ratchet 98 is in the 99 head lamp brush guard pivot settings of sour jujube seat and by tower spring 78 resiliency supported, be provided with accordingly on the ratchet 97 can with the hook tooth 97a of ratchet 98 engagements.Ratchet 97 drives 99 rotations of sour jujube seats when ratchet 98 meshes with hook tooth 97a.Wherein ratchet 97 relative gear wheels 94 are fixedly connected with, and ratchet 97 is connected by screw other connected mode that can certainly adopt those skilled in the art to imagine with gear wheel 94 in the present embodiment.Sour jujube seat 99 is sheathed on to be decided in the rotating shaft 110 and can relatively decide shaft axis X5 rotation.

With reference to Fig. 7, toggle 105 comprises crank 95 and connecting rod 104, wherein crank 95 is fixedly connected with axle sleeve 93, cam pin 103 is set on the crank 95, connecting rod 104 1 ends are articulated in cam pin 103, the other end is articulated in terminal pad 106, drives cam pin 103 by crank 95 and rotate when 99 rotation of sour jujube seat, and cam pin 103 rotates and makes hinged with it connecting rod 104 drive terminal pad 106 rotations.Because gripper shoe 14 relative terminal pads 106 are fixedly connected with, therefore when rotating, terminal pad 106 central axis drive work package 12 pivot swingings when terminal pad 106, the axis of oscillation of the work package 12 in the present embodiment is coaxial with the first output shaft axis X 2, and namely the central axis of terminal pad 106 is exactly the first output shaft axis X 2.Cam pin 103 is the radius of turn of cam pin 103 with respect to the distance of deciding shaft axis X5, cam pin 103 rotates a circle as the center of circle to decide shaft axis X5, correspondingly work package 12 at guard shield 26 interior reciprocally swingings once, namely work package 12 returns back to primary importance after finishing once cutting.When work package 12 returns back to primary importance, because terminal pad 106 is subjected to the effect of torsion spring 101 therefore can remain on its primary importance, so that work package 12 remains on its primary importance equally.Work package 12 is contained in the first receiving space 32 fully when primary importance.

With reference to Fig. 5, shown in Figure 8, spline axle 108 is operationally switched between primary importance and the second place it by controlling organization 120 to be controlled.Controlling organization 120 comprises and triggers transmission mechanism and resetting-mechanism, triggers transmission mechanism and comprises that is used for a block 121 that connects with workpiece, and resetting-mechanism comprises the back-moving spring that acts on spline axle 108, adopts torsion spring 136 in the present embodiment.Trigger transmission mechanism and also comprise the support bar 122 that connects block 121, by the moving block 125 of support bar 122 drivings, the driving member 130 that connects with moving block 125 activities.Support bar 122 extends longitudinally and enters feed box 25, be arranged with support spring 123 on the support bar 122, when workpiece W to be cut acts on block 121 (with reference to Fig. 1), support bar 122 can overcome relative feed box 23 generations of active force of support spring 123 along the displacement of support bar 122 longitudinal directions.Support bar 122 1 ends away from block 121 are fixedly installed pin 124, moving block 125 vertically is provided with groove 126 along it, pin 124 is engaged in groove 126, rotates around pivot 125a thereby can overcome support spring 123 generation displacements drive moving blocks 125 when support bar 122 is subject to applied external force.Driving member 130 comprises for the head end 130a that conflicts with moving block 125 and the terminal 130b that are connected rotationally with pivot 135 relative nothings, when moving block 125 rotations are extremely inconsistent with the head end 130a of driving member 130, drive driving member 130 around the bearing pin axis 135a of pivot 135 rotation, drive simultaneously bearing pin 135 and rotate around bearing pin axis 135a.Spline axle 108 relative bearing pins 135 are without connecting in relative rotation, in the present embodiment, spline axle 108 is located on the spline axle 108 by flat square set, torsion spring 136 is sheathed on the bearing pin 135, wherein an end of torsion spring 136 stretches in the opening 127 of spline axle 108 and is connected with spline axle 108, therefore drives spline axle 108 in primary importance along direction of arrow rotation (with reference to Fig. 9) among the figure to allowing the second place of ratchet 98 ejections when bearing pin 135 rotation.When block 121 pressurizeds continuation promotion support bar 122 vertically moves to feed box 25, moving block 125 breaks away from the head end 130a of driving member 130, and this moment, spline axle 108 returned back to primary importance (with reference to Figure 11) along the direction of arrow among the figure (with reference to Figure 10) rotation under the effect of torsion spring 136.When ratchet 98 turns to 108 conflict of spline axle again (with reference to Fig. 9), spline axle 108 is separated ratchet 98 and the hook tooth 97a of ratchet 97, and work package 12 is finished once and cut the cycle, and work package 12 is finished reciprocally swinging once in guard shield 26.

After 12 couples of workpiece W of work package finish once cutting, workpiece W just disappears automatically to the active force of block 121, this moment, support bar 122 also can return back to initial position under the elastic acting force of support spring 123, moving block 125 can touch the head end 130a of driving member 130 in the process that drive moving block 125 resets, this moment, driving member head end 130a can swing around pivot 132, and the terminal 130b of driving member keeps motionless, because pivot 132 is arranged with torsion spring 131, therefore when moving block 125 returned back to driving member 135 disengagement, driving member head end 130a returned back to initial position under torsion spring 131 effects.

With reference to Fig. 5, shown in Figure 9, when spline axle 108 is positioned at primary importance, ratchet 97 drives ratchet 98 along in the process of direction indication R rotation, spline axle 108 overcomes tower spring 78 elastic acting forces makes ratchet 98 separate with ratchet 97, be that ratchet 98 is backed down by spline axle 108, ratchet 97 is separated with sour jujube seat 99, ratchet 97 idle running, sour jujube seat 99 stops operating, deciding 110 of rotating shafts stops operating, this moment, cam pin 103 and connecting rod 104 no longer drove terminal pad 106 rotations, thereby gripper shoe 14 is stopped swinging in the U-shaped guard shield.

With reference to Figure 10, when spline axle 108 is positioned at the second place, spline axle 108 is thrown off the butt with ratchet 98, in case spline axle 108 is thrown off the butt with ratchet 98, ratchet 98 meshes automatically with hook tooth 97a under the elastic component effect, under this state, ratchet 97 drives to sour jujube seat 99 along rotatablely moving of direction indication R by the ratchet 98 with hook tooth 97a engagement, i.e. ratchet 97 and sour jujube seat 99 engaged transmission.Sour jujube seat 99 drives axle sleeve 93 rotations that are fixedly connected with it.Because axle sleeve 93 is decided rotating shaft 110 relatively without connecting rotationally, so drive by axle sleeve 93 during 99 rotation of sour jujube seat and decide rotating shaft 110 and rotate around deciding shaft axis X5.

With reference to Figure 11, after spline axle 108 moves to the second place from primary importance, under the effect of resetting-mechanism, that is to say, spline axle 108 under torsion spring 136 effect automatically by second site reversion to primary importance, wait for next time cutting process and offseting effect of ratchet 98, the like this circulation.

Power Drive Unit of the present utility model it is also contemplated that to comprise second electro-motor that is used for driving time power train, such as adopting stepper motor, line motor etc. except comprising the electro-motor 18 that drives main transmission.Also can use other power motor, drive time power train such as hydraulic press, air compressor machine, air pump, internal combustion engine etc.Wherein time power train is not limited to gear, ratchet mechanism, can use cylinder, piston, connecting rod etc. to drive terminal pad 106 rotations, thereby makes work package automatically realize swinging at guard shield 26 interior pivots in cutting process.

Claims (10)

1. plant pruning machine comprises:

Work package has cutting element and is used for supporting the gripper shoe of described cutting element;

Drive unit;

Transmission mechanism is arranged between drive unit and the work package, is used for transmission of power with drive unit to cutting element;

Accommodate the host shell of described Power Drive Unit;

Be connected in the handle apparatus of described host shell;

It is characterized in that: the gripping handle that described handle apparatus comprises extension rod and is connected in the extension rod end, described extension rod comprise a plurality of poles that extend longitudinally, and described pole removably connects.

2. plant pruning machine according to claim 1, it is characterized in that: described pole comprises extension bar and female connector, the host cavity that described female connector is provided with opening and is extended to female connector inside by opening, be provided with inserted sheet in the host cavity, extension bar is provided with sleeve, when extension bar and female connector connected, described inserted sheet and sleeve were electrically connected.

3. plant pruning machine according to claim 2, it is characterized in that: described pole further comprises advances line-locked retaining mechanism with extension bar and female connector relative position.

4. plant pruning machine according to claim 3 is characterized in that: described retaining mechanism adopts the cam lock holding mechanism that is arranged on the female connector, and described cam lock holding mechanism comprises the cam member that is pivotally connected to female connector, and the locking wrench that connects cam member.

5. plant pruning machine according to claim 4 is characterized in that: on the described female connector opening is set, the position near opening in the host cavity is provided with pressing plate, and the elastic component that is supported in the pressing plate bottom, and pressing plate is along the female connector longitudinal extension.

6. plant pruning machine according to claim 5, it is characterized in that: between described pressing plate and the cam member leaf spring is set, when by locking wrench cam member being switched to lock pressure position, the cam surface of cam member pushes leaf spring and by leaf spring extruding force is passed to pressing plate, makes by the described cam lock holding mechanism of pressing plate the position of inserted link with respect to sleeve locked.

7. plant pruning machine according to claim 5, it is characterized in that: described elastic component comprises a pair of spring that vertically is arranged at the female connector inwall, and described spring is supported in respectively the two ends of pressing plate.

8. plant pruning machine according to claim 5 is characterized in that: described pressing plate has two protuberances that extend to the accepting hole direction, and described protuberance is used for contact with plunger surface, and described protuberance is arranged at respectively the two ends bottom the pressing plate.

9. plant pruning machine according to claim 1, it is characterized in that: described gripping handle comprises main handle, and the auxiliary-handle of relative main handle pivot setting, main handle has connecting portion and holding part, switch triggering mechanism is set on the holding part, start-up operation when being convenient to grip, connecting portion are used for removably connecting with pole or host shell.

10. plant pruning machine according to claim 1, it is characterized in that: described cutting element is flexible chain, and described flexible chain rotatablely moves around gripper shoe.

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