CN117204214A - Multi-angle pruning device and pruning method thereof - Google Patents

Abstract

The invention relates to the field of apocarya, and particularly discloses a multi-angle pruning device and a pruning method thereof, wherein the pruning device comprises a light pipe and a central fastener; the upper end of the light pipe is inserted with a central fastener; the center fastener is sleeved with a movable plate; the movable plate is provided with a first sliding rail; a second sliding block is inserted in the first sliding rail in a sliding way; through external cable of oil pressure electricity push rod and power to reciprocating motion promotes first shearing piece and second shearing piece contact, cuts the branch in-process, then when needing to cut the branch on the non-same vertical direction, control steering unit changes the inclination of fly leaf, thereby accomplishes the function of pruning with the branch contact of next door, thereby makes the branch shearing work that need not the angle of adjustment light pipe can realize in a certain limit, has solved current shearing mechanism and can't cut the problem of branch to the pecan of different thin shells on a vertical direction.

Description

Multi-angle pruning device and pruning method thereof

Technical Field

The invention relates to the field of apocarya, in particular to a multi-angle pruning device and a pruning method thereof.

Background

Pruning refers to a method for pruning tree branches, such as overgrowth, drooping, back upper branches, too dense branches, pest branches and weak branches, so that the pruning can control the fruiting quantity, the fruiting quality of fruit trees is improved, and the quantity and quality of pecans can be controlled only by frequent pruning in the planting process of the pecans.

The Chinese invention patent publication No. CN109220288B discloses a high-altitude pruning device on days 2021-06-29, which is characterized in that: the device comprises a stay bar assembly, a shearing assembly, a first driving device, a transmission assembly, a clamping assembly and a second driving device; the transmission assembly is provided with 2 groups, the structures of the 2 groups of transmission assemblies are the same, and the 2 groups of transmission assemblies are divided into a left transmission assembly and a right transmission assembly according to the difference of the left and right positions of the transmission assemblies; the brace bar assembly includes a brace bar and a lower mount. The lower mounting seat is welded and fixed on the lower part of the stay bar; the first driving device is fixedly arranged on the left part of the lower mounting seat; the first driving device drives the front cutter bar and the rear cutter bar of the shearing assembly through the left transmission assembly to conduct shearing operation; the second driving device is fixedly arranged on the right part of the lower mounting seat; the second driving device drives the front clamping arm and the rear clamping arm of the clamping assembly through the right transmission assembly to carry out clamping and positioning operation.

However, the above-mentioned disclosed scheme has the disadvantages that the shearing assembly and the stay assembly are in one direction and the direction of the shearing assembly cannot be independently adjusted, so that when the thin-shell hickory nut of the tall arbor is pruned, the lower branch is blocked, and when the upper branch is pruned, the lower branch is blocked, so that the pruning cannot be accurately aligned, and the angle alignment branch is inconvenient to adjust for pruning.

Disclosure of Invention

The invention aims to solve the technical problems and provides a multi-angle pruning device and a pruning method thereof.

In order to achieve the above object, the present invention is realized by the following technical scheme;

the technical scheme adopted for solving the technical problems is as follows: the invention relates to a multi-angle pruning device, which comprises a light pipe and a central fastener; the upper end of the light pipe is inserted with a central fastener; the center fastener is sleeved with a movable plate; the movable plate is provided with a first sliding rail; a second sliding block is inserted in the first sliding rail in a sliding way; the second sliding block is fixedly connected with a first shearing block; the first shearing block is fixedly connected with an oil hydraulic push rod; the oil pressure electric push rod is fixedly connected in the movable plate; a second shear block is fixedly connected in the movable plate corresponding to the first shear block; a steering unit is connected between the movable plate and the light pipe.

Further, the steering unit comprises a side shaft, an elastic belt and a positioning shaft; side shafts are symmetrically inserted in grooves at the lower end of the movable plate; a positioning shaft is inserted into the light pipe; elastic belts are symmetrically sleeved on the positioning shaft and the side shaft; the side shaft is sleeved with a traction belt.

Further, the lower end of the traction belt is fixedly connected with a steering handle; an elastic rope is fixedly connected to the lower end of the steering handle; the bottom end of the elastic rope is fixedly connected with a base plate; the base plate is inserted into the lower end of the light pipe; the lower ends of the base plate and the light pipe are inserted with a plate trailer.

Further, a second chute is formed in the side face of the movable plate; the second sliding groove is in sliding connection with a saw blade; a limiting block is fixedly connected in the second chute corresponding to the saw blade; the upper end of the light pipe is fixedly connected with a vertical limiting pipe corresponding to the movable plate.

Further, a mobile power supply and a traction handle are fixedly connected to the scooter; the mobile power supply is electrically connected with a wire; the upper end of the wire is electrically connected with an oil hydraulic push rod; the movable plate is fixedly connected with a protective cover corresponding to the oil pressure electric push rod; the light pipe is sleeved with a movable pipe; the movable tube is symmetrically and fixedly connected with a holding handle; the movable pipe is provided with a hole and is in threaded connection with a fixing fastener.

A pruning method, which is suitable for the multi-angle pruning device, and comprises the following steps:

s1: pushing the scooter to move beside the apocarya, taking the base plate and the light pipe off the scooter, holding the light pipe to change the height and angle, moving beside the branches of the apocarya below, controlling the action of the oil piezoelectric push rod, enabling the first shearing block to displace towards the second shearing block and shear the branches of the apocarya, and repeating the operation around the apocarya to complete shearing on the branches to be sheared below;

s2: the method comprises the steps of continuously approaching to the apocarya, raising the height and angle of a light pipe, enabling the branches to be cut at the middle position of the apocarya tree to be reached, pulling a steering handle to change the angle of a movable plate, enabling the movable plate to be contacted with surrounding branches, controlling an oil hydraulic electric push rod to act, enabling a first shearing block to displace towards a second shearing block and shear the branches of the apocarya, enabling the branches at the middle position to be sheared around the inner branches in the rotation radius range of the movable plate, and enabling the branches at the middle position to be sheared through repeated operation around the apocarya tree;

s3: the light pipe is enabled to reach the highest height and approach to the vertical angle by continuing to be close to the apocarya tree, at the moment, the branches to be cut at the upper layer position of the apocarya tree can be contacted, then the steering handle is pulled to change the angle of the movable plate, so that the branches at the upper position can be contacted with surrounding branches, at the moment, the oil pressure electric push rod is controlled to act, the first shearing block moves towards the second shearing block and shears the branches of the apocarya, and accordingly the branches at the surrounding inner branches in the rotation radius range of the movable plate can be cut, and the branches at the upper position can be cut by encircling repeated operations of the apocarya tree.

The multi-angle pruning device and the pruning method thereof provided by the invention have the following beneficial effects:

1. according to the invention, the cable and the power supply are externally connected through the oil-pressure electric push rod, so that the first shearing block and the second shearing block are pushed to contact in a reciprocating manner, the branches are sheared in the contact process, then when the branches in different vertical directions are required to be sheared, the steering unit is controlled, the inclination angle of the movable plate is changed, so that the function of shearing the branches is completed by contacting with the branches beside, the branches shearing work in a certain range can be realized without adjusting the angle of the light pipe, and the problem that the existing shearing device cannot shear the branches of different apocarya in one vertical direction is solved;

2. according to the invention, the side shaft connected with the upper end of the traction belt can be pulled by pulling the traction belt at one side, so that the movable plate is driven to rotate around the central fastener, so that the movable plate is closely contacted with the branches of the apocarya, then the oil piezoelectric push rod is controlled to act to push the first shearing block to contact with the second shearing block to squeeze the branches, so that the branches are sheared, the branches with the diameter of four centimeters can be sheared once by utilizing the strong thrust of the oil piezoelectric push rod, and the rotating directions of the movable plate, the first shearing block and the second shearing block and the branches can be changed by changing different traction belts to reversely contact with the branches, so that the branches with the diameter of more than four centimeters can be sheared, and the problem that the existing pruning device can not shear the branches with the cutting length is solved.

Drawings

The following describes the embodiments of the present invention in further detail with reference to the drawings;

FIG. 1 is a schematic diagram of a first axial measurement structure of a multi-angle pruning device;

FIG. 2 is a schematic diagram of a multi-angle pruning device in a semi-sectional structure;

FIG. 3 is a schematic view of a first partial structure of a multi-angle pruning device;

fig. 4 is a schematic view of a second partial structure of the multi-angle pruning device.

The reference numerals in the figures illustrate: 1. a plate vehicle; 2. a base plate; 3. a lightweight tube; 4. a vertical limiting tube; 5. a central fastener; 6. a movable plate; 7. a first slide rail; 8. a second slider; 9. a first cutout; 10. a hydraulic electric push rod; 11. a second cutout; 12. a second chute; 13. a saw blade; 14. a limiting block; 15. a protective cover; 16. a side shaft; 17. an elastic belt; 18. positioning a shaft; 19. a traction belt; 20. a steering handle; 21. a wire; 22. a traction handle; 23. a movable tube; 24. a grip handle; 25. fixing the fastener; 26. a mobile power supply; 27. an elastic rope.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The following description of the technical solutions in the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the embodiments of the present invention, all directional indicators (such as up-down-left-right-front-rear … …) are merely used to explain the relative positional relationship between the components, motion, etc. in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indicators correspondingly change, and the connection may be a direct connection or an indirect connection.

Referring to fig. 1-4, a multi-angle pruning device comprises a lightweight pipe 3 and a central fastener 5; the upper end of the light pipe 3 is inserted with a central fastener 5; the center fastener 5 is sleeved with a movable plate 6; the movable plate 6 is provided with a first sliding rail 7; a second sliding block 8 is inserted in the first sliding rail 7 in a sliding way; the second sliding block 8 is fixedly connected with a first shearing block 9; the first shearing block 9 is fixedly connected with an oil hydraulic push rod 10; the oil hydraulic push rod 10 is fixedly connected in the movable plate 6; a second shear block 11 is fixedly connected in the movable plate 6 corresponding to the first shear block 9; a steering unit is connected between the movable plate 6 and the light pipe 3; during operation, the cable and the power supply are externally connected through the oil hydraulic push rod 10, so that the first shearing block 9 and the second shearing block 11 are pushed to be contacted through reciprocating motion, the branches are sheared in the contact process, then when the branches on the different vertical directions are required to be sheared, the steering unit is controlled, the inclination angle of the movable plate 6 is changed, the function of pruning is completed through contact with the branches beside the movable plate, the branches shearing work in a certain range can be realized without adjusting the angle of the light pipe 3, and the problem that the existing shearing device cannot shear the branches of different apocarya in one vertical direction is solved.

The steering unit comprises a side shaft 16, an elastic belt 17 and a positioning shaft 18; the lower end of the movable plate 6 is symmetrically inserted with side shafts 16 in a slotted mode; a positioning shaft 18 is inserted into the light pipe 3; elastic belts 17 are symmetrically sleeved on the positioning shaft 18 and the side shaft 16; a traction belt 19 is sleeved on the side shaft 16; during operation, the traction belt 19 on one side can be pulled, so that the side shaft 16 connected with the upper end of the traction belt 19 can be pulled, the movable plate 6 is driven to rotate around the central fastener 5, so that the movable plate is closely contacted with the branches of the apocarya, then the oil piezoelectric push rod 10 is controlled to act to push the first shearing block 9 to contact with the second shearing block 11 to extrude the branches, so that the branches can be sheared off, the branches with the diameter of four centimeters can be sheared off once by utilizing the strong thrust of the oil piezoelectric push rod 10, and the rotating direction of the movable plate 6, the rotating direction of the first shearing block 9 and the rotating direction of the second shearing block 11 can be changed by changing different traction belts 19, so that the branches with the length of more than four centimeters can be sheared off by the existing pruning device.

A steering handle 20 is fixedly connected to the lower end of the traction belt 19; an elastic rope 27 is fixedly connected to the lower end of the steering handle 20; the lower end of the elastic rope 27 is fixedly connected with a base plate 2; the base plate 2 is inserted into the lower end of the light pipe 3; the lower ends of the base plate 2 and the light pipe 3 are inserted with a plate trailer 1; in operation, the elastic rope 27, the steering handle 20 and the traction belt 19 are connected through the base plate 2 to form a whole and are close to the light pipe 3, so that the steering handle 20 is pulled, the movable plate 6 can be rotated to one side, the contact angle between the first shearing block 9 and the second shearing block 11 and the branches is changed, the branches are sheared from the upper part or the lower part of the branches conveniently, the branches which are too thick are sheared from the upper direction and the lower direction of the branches, the diameter range of the branches which can be sheared is large, and the branches of the common-equipment-use branch-pruning pecan can be sheared, so that the problem that the existing branch shearing device cannot shear branches twice as thick as the branch of the pruning structure is solved.

A second chute 12 is formed in the side surface of the movable plate 6; the second chute 12 is slidably inserted with a saw blade 13; a limiting block 14 is fixedly connected in the second chute 12 corresponding to the saw blade 13; the upper end of the light pipe 3 is fixedly connected with a vertical limiting pipe 4 corresponding to the movable plate 6; during working, the saw blade 13 is convenient to replace and fix through the limiting block 14, so that sawing work can be completed through friction contact between the saw blade 13 and thicker branches, and the apocarya branches at high positions can be sawn off by standing on the ground; through changing the position of vertical spacing pipe 4 on light pipe 3 to can restrict the angle that the quilt of fly leaf 6 was pulled rotatory change, thereby the shearing angle of adaptation apocarya branch of not co-altitude has been solved current manual pruning device and has been changed conveniently but the unable adaptation apocarya of high height off the ground, and the electric pruning work can't change the direction of pruning and leads to the inconvenient problem of adjustment in the time of pruning upper branch.

A mobile power supply 26 and a traction handle 22 are fixedly connected to the scooter 1; the mobile power supply 26 is electrically connected with a wire 21; the upper end of the wire 21 is electrically connected with an oil hydraulic push rod 10; a protective cover 15 is fixedly connected on the movable plate 6 corresponding to the oil hydraulic push rod 10; the light pipe 3 is sleeved with a movable pipe 23; the movable pipe 23 is symmetrically and fixedly connected with a holding handle 24; the movable pipe 23 is provided with a hole and is in threaded connection with a fixed fastener 25; during operation, the fixed movable pipe 23 is contacted with the light pipe 3 through the rotary fixed fastener 25, and meanwhile, the angle of the holding handle 24 can be adjusted, so that the thin-shell hickory branch pruning operation can be conveniently held; the reciprocating motion of the oil piezoelectric push rod 10 is protected by the protecting cover 15 so as not to be entangled with branches and leaves of the apocarya; the movable power supply 26 and the hydraulic electric push rod 10 are connected through the lead 21, so that the hydraulic electric push rod 10 can be electrified for a long time, and high-strength frequent pruning work can be completed for the apocarya forest at one time, and the problem that the existing manual pruning device is inconvenient to adjust when the pruning direction of an upper layer of branches is caused by the fact that the existing manual pruning device is convenient to change but the ground clearance is low and cannot be adapted to the apocarya is solved.

A pruning method, which is suitable for the multi-angle pruning device, and comprises the following steps:

s1: pushing the plate trailer 1 to move beside the apocarya, taking the base plate 2 and the light pipe 3 off the plate trailer 1, holding the light pipe 3 to change the height and angle, moving beside the branches of the apocarya below, controlling the action of the hydraulic electric push rod 10, enabling the first shearing block 9 to displace towards the second shearing block 11 and shear the branches of the apocarya, and completing shearing of the branches to be sheared below by encircling repeated operations of the apocarya;

s2: continuing to approach the hickory tree with the light pipe 3, raising the height and angle so that the branches to be cut at the middle position of the hickory tree with the light pipe can be reached, then pulling the steering handle 20 to change the angle of the movable plate 6, thereby realizing contact with surrounding branches, at the moment, controlling the action of the hydraulic electric push rod 10, the first shearing block 9 to displace towards the second shearing block 11 and shear the branches of the hickory tree with the light pipe, thereby pruning the branches at the middle position around the rotating radius range of the movable plate 6 by repeating the operation around the hickory tree with the light pipe;

s3: continuing to approach the hickory tree with the light pipe 3 at the highest height and at a nearly vertical angle, at this time, the upper layer of the hickory tree is contacted with the branch to be cut, and then the steering handle 20 is pulled to change the angle of the movable plate 6, so that contact with the surrounding branch can be achieved, at this time, the hydraulic electric push rod 10 is controlled to move, and the first shearing block 9 displaces toward the second shearing block 11 and shears the branch of the hickory tree, so that the surrounding branch in the rotation radius range of the movable plate 6 can be pruned, and the branch in the upper position can be pruned by repeating the operation around the hickory tree.

By adopting the scheme, when the device is used, the cable and the power supply are externally connected through the hydraulic electric push rod 10, so that the first shearing block 9 and the second shearing block 11 are pushed to contact in a reciprocating manner, the branches are sheared in the contact process, then when the branches in the non-same vertical direction are required to be sheared, the steering unit is controlled, the inclination angle of the movable plate 6 is changed, and the function of shearing the branches is finished by contacting the branches beside, so that the branches in a certain range can be sheared without adjusting the angle of the light pipe 3, and the problem that the traditional shearing device cannot shear the branches of different apocarya in one vertical direction is solved; the side shaft 16 connected with the upper end of the traction belt 19 can be pulled by pulling the traction belt 19 at one side, so that the movable plate 6 is driven to rotate around the central fastener 5 to be in close contact with the branches of the apocarya, then the oil piezoelectric push rod 10 is controlled to act to push the first shearing block 9 to be in contact with the second shearing block 11 to squeeze the branches, so that the branches in four centimeters in diameter can be sheared once by utilizing the strong thrust of the oil piezoelectric push rod 10, and the rotating directions of the movable plate 6, the first shearing block 9 and the second shearing block 11 and the branches can be changed by changing different traction belts 19, so that the branches with more than four centimeters can be sheared, and the problem that the existing shearing device cannot shear the branches with the shearing length is solved; the elastic rope 27, the steering handle 20 and the traction belt 19 are connected through the base plate 2 to form a whole and are close to the light pipe 3, so that the steering handle 20 is pulled, the movable plate 6 can rotate to one side, the contact angle between the first shearing block 9 and the second shearing block 11 and the branches is changed, the branches are sheared from the upper part or the lower part of the branches conveniently, the branches which are too thick can be sheared from the upper direction and the lower direction of the branches, the diameter range of the branches which can be sheared is large, the trunk branches of the pecan which can be sheared by one device can be universally sheared, and the problem that the existing pruning device cannot shear branches twice as thick as the pruning structure is solved; the saw blade 13 is convenient to replace and fix through the limiting block 14, so that sawing work can be completed through friction contact between the saw blade 13 and thicker branches, and the apocarya branches at high positions can be sawn by standing on the ground; the position of the vertical limiting pipe 4 on the light pipe 3 is changed, so that the angle of the movable plate 6, which is changed by traction rotation, can be limited, the shearing angle of the apocarya branches with different heights can be adapted, and the problem that the existing manual pruning device is inconvenient to adjust when the upper-layer branches are pruned due to the fact that the existing manual pruning device can be changed conveniently but the ground clearance is low and the apocarya cannot be adapted can be solved; the movable pipe 23 is fixed on the movable plate 6 through the contact of the rotary fixing fastener 25 and the light pipe 3, and meanwhile, the angle of the holding handle 24 can be adjusted, so that the thin-shell hickory branch pruning operation can be conveniently held; the reciprocating motion of the oil piezoelectric push rod 10 is protected by the protecting cover 15 so as not to be entangled with branches and leaves of the apocarya; the movable power supply 26 and the hydraulic electric push rod 10 are connected through the lead 21, so that the hydraulic electric push rod 10 can be electrified for a long time, and high-strength frequent pruning work can be completed for the apocarya forest at one time, and the problem that the existing manual pruning device is inconvenient to adjust when the pruning direction of an upper layer of branches is caused by the fact that the existing manual pruning device is convenient to change but the ground clearance is low and cannot be adapted to the apocarya is solved.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims (6)

1. A multi-angle pruning device, characterized in that; comprises a lightweight pipe (3) and a central fastener (5); the upper end of the light pipe (3) is inserted with a central fastener (5); a movable plate (6) is sleeved on the central fastening piece (5); a first sliding rail (7) is arranged on the movable plate (6); a second sliding block (8) is inserted in the first sliding rail (7) in a sliding way; a first shearing block (9) is fixedly connected to the second sliding block (8); the first shearing block (9) is fixedly connected with an oil hydraulic push rod (10); the oil pressure electric push rod (10) is fixedly connected in the movable plate (6); a second shear block (11) is fixedly connected in the movable plate (6) corresponding to the first shear block (9); a steering unit is connected between the movable plate (6) and the light pipe (3).

2. The multi-angle pruning device of claim 1, wherein: the steering unit comprises a side shaft (16), an elastic belt (17) and a positioning shaft (18); the lower end of the movable plate (6) is symmetrically inserted with side shafts (16) through grooves; a positioning shaft (18) is inserted into the light pipe (3); elastic belts (17) are symmetrically sleeved on the positioning shaft (18) and the side shaft (16); the side shaft (16) is sleeved with a traction belt (19).

3. The multi-angle pruning device of claim 2, wherein: the lower end of the traction belt (19) is fixedly connected with a steering handle (20); an elastic rope (27) is fixedly connected to the lower end of the steering handle (20); the lower end of the elastic rope (27) is fixedly connected with a base plate (2); the base plate (2) is inserted into the lower end of the light pipe (3); the lower ends of the base plate (2) and the light pipe (3) are inserted with a plate trailer (1).

4. A multi-angle pruning device as claimed in claim 3, wherein: a second chute (12) is formed in the side face of the movable plate (6); a saw blade (13) is inserted in the second sliding groove (12) in a sliding way; a limiting block (14) is fixedly connected in the second chute (12) corresponding to the saw blade (13); the upper end of the light pipe (3) is fixedly connected with a vertical limiting pipe (4) corresponding to the movable plate (6).

5. The multi-angle pruning device of claim 4, wherein: a mobile power supply (26) and a traction handle (22) are fixedly connected to the scooter (1); the mobile power supply (26) is electrically connected with a lead (21); the upper end of the lead (21) is electrically connected with an oil hydraulic push rod (10); a protective cover (15) is fixedly connected on the movable plate (6) corresponding to the oil pressure electric push rod (10); a movable pipe (23) is sleeved on the light pipe (3); the movable pipe (23) is symmetrically and fixedly connected with a holding handle (24); the movable pipe (23) is provided with a hole and is in threaded connection with a fixed fastener (25).

6. A trimming method, characterized in that: the method is applicable to the multi-angle pruning device as claimed in claims 1-5, and comprises the following steps:

s1: pushing the plate trailer (1) to move beside the apocarya, taking the base plate (2) and the light pipe (3) off the plate trailer (1), holding the light pipe (3) to change the height and angle, moving beside the branches of the apocarya below, controlling the action of the hydraulic push rod (10) to enable the first shearing block (9) to displace towards the second shearing block (11) and shear the branches of the apocarya, and repeating the operation around the apocarya to complete shearing of the branches to be sheared below;

s2: the method comprises the steps of continuing to approach to the apocarya tree, lifting the height and angle of the light pipe (3) so as to enable the branches to be cut at the middle position of the apocarya tree, pulling the steering handle (20) to change the angle of the movable plate (6), and accordingly enabling the branches to be contacted with surrounding branches, controlling the oil hydraulic push rod (10) to act, enabling the first shearing block (9) to displace towards the second shearing block (11) and shear the branches of the apocarya, and accordingly pruning the branches at the middle position around the branches in the rotation radius range of the movable plate (6) and repeating the operation around the apocarya tree;

s3: the light pipe (3) is enabled to reach the highest height and approach to the vertical angle, at the moment, the branches to be cut at the upper layer position of the hickory tree can be contacted, then the steering handle (20) is pulled to change the angle of the movable plate (6), so that the contact with surrounding branches can be realized, at the moment, the action of the hydraulic electric push rod (10) is controlled, the first shearing block (9) is displaced towards the second shearing block (11) and shears the branches of the hickory tree, and accordingly the branches at the upper middle position can be cut around the branches in the rotation radius range of the movable plate (6) through repeated operation of encircling the hickory tree.