Tree crown high-position pruning equipment and pruning process for tree crown shaping

Abstract

A crown high-position pruning device disclosed by the present invention comprises a pruning mechanism, the pruning mechanism comprises a disk saw assembly, a scissor assembly and a driving assembly, the disk saw assembly comprises a first belt pulley, a connecting shaft and a disk saw, and the first belt pulley and the disk saw are both fixedly installed on the connecting shaft. The scissor assembly comprises a second belt wheel and scissors, the second belt wheel can drive the scissors to shear, the driving assembly comprises a driving shaft, a fixing frame, a third belt wheel, a fourth belt wheel and a clamping ring, and the third belt wheel and the fourth belt wheel are rotationally installed at the top and the bottom of the fixing frame. The third belt pulley is connected with the first belt pulley, the fourth belt pulley is connected with the second belt pulley, the driving shaft penetrates through the axis of the third belt pulley and the axis of the fourth belt pulley, and the clamping ring is installed on the driving shaft in a sliding mode. Through the overall structure arrangement, two tools can be conveniently controlled to prune tree crowns with different effects, and the pruning effect is improved.

Description

Technical Field

[0001] The invention relates to the field of tree crown high position pruning equipment, in particular to a tree crown high position pruning equipment. Background Art

[0002] Tree shaping, also known as "pruning", is one of the tree management tasks. In the process of tree crown formation, various pruning methods are used to shape the tree into different shapes according to its characteristics, cultivation conditions and cultivation purposes, so that it is more in line with production and viewing requirements. Fruit tree shaping can make the crown occupy a larger fruiting space and light receiving area, forming a solid skeleton, which is conducive to regulating nutrients, reducing pests and diseases, increasing yields, improving quality and facilitating management, laying a good foundation for high and stable yields.

[0003] Existing tree crown shaping is mostly done manually. However, for some large tree crown shaping, manual operation is difficult, takes a long time, and poses safety hazards. In order to solve the above problems, various high-position tree crown pruning equipment have appeared on the market. The pruning tools provided on such equipment are mainly divided into two types. One is a circular saw, such as a tree geometric shaping and pruning robot system disclosed in Chinese patent CN113647262B, and the other is scissors, such as a telescopic branch pruning device with precise auxiliary positioning disclosed in Chinese patent CN115280988B. The two pruning tools are applicable to different scenarios. The circular saw is suitable for large-scale pruning of tree crowns with messy branches, and the scissors are suitable for fine pruning of fine branches. The pruning effects achieved by the two pruning tools are also different. Existing high-position tree crown pruning equipment is generally only equipped with one of them, and it is impossible to switch according to different usage scenarios. The pruning effect needs to be improved. Summary of the invention

[0004] The purpose of the present application is to provide a high-position pruning device for tree crowns. The pruning mechanism includes a circular saw assembly, a scissors assembly and a driving assembly. The driving assembly includes a driving shaft, a fixed frame, a third pulley, a fourth pulley and a clamping ring. The third pulley and the fourth pulley are rotatably installed on the top and bottom of the fixed frame respectively. The driving shaft passes through the axis of the third pulley and the axis of the fourth pulley. The clamping ring is arranged between the third pulley and the fourth pulley, and the clamping ring is slidably installed on the driving shaft. The upper and lower ends of the clamping ring are fixedly installed with a plurality of clamping blocks. The lower end of the third pulley and the upper end of the fourth pulley are provided with a plurality of clamping grooves that cooperate with the clamping blocks. By controlling the clamping ring to rise or fall, it is clamped with the third pulley or the fourth pulley, thereby driving the first pulley or the second pulley to rotate, so as to control the operation of the circular saw or scissors, so as to facilitate the control of the two tools to perform different pruning effects on the tree crown and improve the pruning effect.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a tree crown high-position pruning equipment, including a vehicle body, a mechanical arm is installed at the rear of the vehicle body, a pruning mechanism is arranged at one end of the mechanical arm, the pruning mechanism includes a circular saw assembly, a scissors assembly and a driving assembly, the circular saw assembly includes a first pulley, a connecting shaft and a circular saw, the first pulley and the circular saw are both fixedly installed on the connecting shaft, the scissors assembly includes a second pulley and scissors, the second pulley can drive the scissors to cut, the driving assembly includes a driving shaft, a fixing frame, a third pulley, and a fourth pulley and a clamping ring, the third pulley and the fourth pulley are rotatably installed on the top and bottom of the fixed frame respectively, the third pulley is connected to the first pulley by a belt, the fourth pulley is connected to the second pulley by a belt, the driving shaft passes through the axis of the third pulley and the axis of the fourth pulley, the clamping ring is arranged between the third pulley and the fourth pulley, and the clamping ring is slidably installed on the driving shaft, the upper and lower ends of the clamping ring are fixedly installed with a plurality of clamping blocks, and the lower end of the third pulley and the upper end of the fourth pulley are provided with a plurality of clamping grooves matching the clamping blocks.

[0006] Preferably, the trimming mechanism also includes a shell, the connecting shaft, the second pulley and the driving shaft are all rotatably installed inside the shell, a lifting plate is slidably installed on the inner wall of the shell, one end of the lifting plate is rotatably connected to the clamping ring, a threaded rod is rotatably installed in the shell, the threaded rod passes through the lifting plate, and the threaded rod is threadedly matched with the lifting plate.

[0007] Preferably, the upper end of the threaded rod is inserted through the upper end of the outer shell, and a first gear is fixedly installed on the upper end of the threaded rod, a second gear is rotatably installed on the upper end of the outer shell, a first motor is fixedly installed in the outer shell, an output end of the first motor is inserted through the upper end of the outer shell and fixedly connected to the second gear, and the first gear is meshed with the second gear.

[0008] Preferably, the trimming mechanism also includes a mounting plate, the mounting plate is fixedly mounted on one end of the mechanical arm, the outer shell is rotatably mounted on the lower end of the mounting plate, a second motor is fixedly mounted on the upper end of the mounting plate, the output end of the second motor is fixedly connected to the driving shaft, an arc-shaped rack is fixedly mounted on the lower end of the mounting plate, and the first gear is meshed with the arc-shaped rack.

[0009] Preferably, the scissors include a fixed blade and a rotating blade, one end of the fixed blade is inserted into the interior of the shell and fixedly connected thereto, one side of one end of the rotating blade is rotatably connected to one side of the middle part of the fixed blade, the other side of the middle part of the fixed blade is provided with an arc-shaped opening, a sliding roller is rotatably installed on the other side of one end of the rotating blade, the sliding roller is inserted through the arc-shaped opening, a boss is fixedly installed at the edge of the upper end of the second pulley, a linkage rod is rotatably installed on the upper end of the boss, and one end of the linkage rod is rotatably connected to the other side of one end of the rotating blade.

[0010] Preferably, a plurality of slide grooves are axially arranged in a ring array in the middle portion of the driving shaft, and a plurality of sliders are axially arranged in a ring array on the inner wall of the clamping ring, and each slider cooperates with a corresponding slide groove.

[0011] Preferably, two roller cutter mechanisms are symmetrically installed on both sides of the vehicle body head, and the roller cutter mechanism includes a first electric cylinder, a second electric cylinder, a movable arm, a third motor and a roller cutter. The first electric cylinder and the second electric cylinder are both rotatably installed on the head of the vehicle body, the telescopic end of the second electric cylinder is rotatably equipped with a cylinder mounting seat, the cylinder body of the first electric cylinder is fixedly installed on the cylinder mounting seat, the movable arm is installed on the telescopic end of the first electric cylinder, the end of the movable arm is fixedly installed with a roller cutter mounting seat, the third motor is fixedly installed on the roller cutter mounting seat, and the roller cutter is fixedly installed on the output end of the third motor.

[0012] Preferably, the roller cutter includes a shaft, a plurality of mounting plates and a plurality of spiral blades. The shaft is fixedly connected to the output end of the third motor and is rotatably mounted on the roller cutter mounting seat through a bearing. The plurality of mounting plates are fixedly mounted on the shaft in parallel, and the plurality of spiral blades are fixedly mounted on the edges of the plurality of mounting plates in a circular array.

[0013] Preferably, the mounting plate is provided with a plurality of through holes in an annular array.

[0014] The present invention also provides a pruning process for tree crown shaping, using the above-mentioned tree crown high-position pruning equipment, and the process comprises the following steps:

[0015] The mechanical arm is used to drive the pruning mechanism to the crown of the tree to be pruned, and the first motor is driven to drive the second gear to rotate, and the first gear is driven to rotate, thereby driving the threaded rod to rotate, and the threaded rod acts on the lifting plate to drive it to rise, and the lifting plate drives the clamping ring to rise, so that the clamping ring is clamped with the third pulley;

[0016] The second motor is driven to rotate the driving shaft, the driving shaft drives the clamping ring to rotate, the clamping ring drives the third belt pulley to rotate, the third belt pulley drives the first belt pulley to rotate, thereby driving the circular saw to rotate, and performing large-scale rough pruning of the tree crown;

[0017] After the tree crown is roughly trimmed, the first motor is driven in reverse, thereby driving the clamping ring to descend, so that the clamping ring is clamped with the fourth pulley;

[0018] The second motor is driven again to drive the driving shaft to rotate, and the driving shaft drives the fourth pulley to rotate through the clamping ring, and the fourth pulley drives the second pulley to rotate, thereby driving the scissors to perform fine trimming of the tree crown.

[0019] In summary, the technical effects and advantages of the present invention are as follows:

[0020] 1. In the present invention, the pruning mechanism includes a circular saw assembly, a scissors assembly and a driving assembly, the driving assembly includes a driving shaft, a fixing frame, a third pulley, a fourth pulley and a clamping ring, the third pulley and the fourth pulley are rotatably installed on the top and bottom of the fixing frame respectively, the driving shaft passes through the axis of the third pulley and the axis of the fourth pulley, the clamping ring is arranged between the third pulley and the fourth pulley, and the clamping ring is slidably installed on the driving shaft, the upper and lower ends of the clamping ring are fixedly installed with a plurality of clamping blocks, the lower end of the third pulley and the upper end of the fourth pulley are provided with a plurality of clamping grooves matched with the clamping blocks, the clamping ring is controlled to rise or fall, so that it is clamped with the third pulley or the fourth pulley, thereby driving the first pulley or the second pulley to rotate, so as to control the operation of the circular saw or the scissors, and conveniently controlling the two tools to perform different pruning effects on the tree crown, thereby improving the pruning effect.

[0021] The cam is engaged with the first gear and the second gear is engaged with the first gear, and the cam is engaged with the first gear and the second gear is engaged with the first gear.

[0022] 3. In the present invention, two roller cutter mechanisms are symmetrically installed on both sides of the head of the vehicle body, and the roller cutter mechanism includes a first electric cylinder, a second electric cylinder, a movable arm, a third motor and a roller cutter. The first electric cylinder and the second electric cylinder are both rotatably installed on the head of the vehicle body, the telescopic end of the second electric cylinder is rotatably connected to the first electric cylinder, the movable arm is fixedly installed on the telescopic end of the first electric cylinder, the third motor is fixedly installed on one end of the movable arm, and the roller cutter is fixedly installed on the output end of the third motor. The roller cutter can be controlled to be telescopic by the first electric cylinder, and its angle can be changed by pushing the first electric cylinder by the second electric cylinder. The position of the roller cutter can be flexibly controlled in conjunction with the movable arm. The roller cutter can be driven to rotate by the third motor to trim the branches in front of the vehicle body to avoid affecting the forward movement of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the trimming mechanism of the present invention;

[0026] Figure 3 It is one of the schematic cross-sectional structures of the trimming mechanism of the present invention;

[0027] Figure 4 The second schematic diagram of the cutaway structure of the trimming mechanism of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the fixing frame of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the mounting plate of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the scissors of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the hob of the present invention.

[0032] In the figure: 1, vehicle body; 2, mechanical arm; 3, trimming mechanism; 301, first pulley; 302, connecting shaft; 303, circular saw; 304, second pulley; 305, scissors; 3051, fixed blade; 3052, rotating blade; 3053, arc opening; 3055, boss; 3056, linkage rod; 306, driving shaft; 307, fixed frame; 308, third pulley; 309, fourth pulley; 310 , snap ring; 311, housing; 312, lifting plate; 313, threaded rod; 314, mounting plate; 315, first gear; 316, second gear; 317, first motor; 319, arc rack; 4, hob mechanism; 401, first electric cylinder; 402, second electric cylinder; 403, movable arm; 404, third motor; 405, hob; 4051, shaft; 4052, mounting plate; 4053, spiral blade. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Reference Figure 1-4The high-position tree crown pruning equipment shown in the figure includes a body 1, a mechanical arm 2 is installed at the rear of the body 1, and a pruning mechanism 3 is set at one end of the mechanical arm 2, and the pruning mechanism 3 includes a circular saw assembly, a scissors assembly and a driving assembly, the circular saw assembly includes a first pulley 301, a connecting shaft 302 and a circular saw 303, the first pulley 301 and the circular saw 303 are both fixedly installed on the connecting shaft 302, the scissors assembly includes a second pulley 304 and scissors 305, the second pulley 304 can drive the scissors 305 to cut, the driving assembly includes a driving shaft 306, a fixing frame 307, a third pulley 308, a fourth pulley 309 and a clamping ring 310, the third pulley 308 and the fourth pulley 309 are rotatably installed on the top and bottom of the fixing frame 307 respectively, and the third pulley 308 is connected to the first pulley 303 by a belt 01 connection, the fourth pulley 309 is connected to the second pulley 304 through a belt, the driving shaft 306 passes through the axis of the third pulley 308 and the axis of the fourth pulley 309, the clamping ring 310 is arranged between the third pulley 308 and the fourth pulley 309, and the clamping ring 310 is slidably installed on the driving shaft 306, the upper and lower ends of the clamping ring 310 are fixedly installed with a plurality of clamping blocks, the lower end of the third pulley 308 and the upper end of the fourth pulley 309 are provided with a plurality of clamping grooves matched with the clamping blocks, by controlling the clamping ring 310 to rise or fall, it is clamped with the third pulley 308 or the fourth pulley 309, thereby driving the first pulley 301 or the second pulley 304 to rotate, so as to control the circular saw 303 or the scissors 305 to work, so as to facilitate the control of the two tools to perform different pruning effects on the tree crown and improve the pruning effect.

[0035] Embodiment 2 differs from the above-mentioned embodiments in that the trimming mechanism 3 further comprises a shell 311, the connecting shaft 302, the second pulley 304 and the driving shaft 306 are all rotatably mounted inside the shell 311, a lifting plate 312 is slidably mounted on the inner wall of the shell 311, one end of the lifting plate 312 is rotatably connected to the clamping ring 310, a threaded rod 313 is rotatably mounted inside the shell 311, the threaded rod 313 passes through the lifting plate 312, and the threaded rod 313 is threadedly matched with the lifting plate 312, and the lifting plate 312 can be lifted and lowered by driving the threaded rod 313 to rotate, thereby controlling the clamping ring 310 to rise or fall, so that it is clamped with the third pulley 308 or the fourth pulley 309, thereby achieving the effect of switching the circular saw 303 and the scissors 305.

[0036] Embodiment 3 differs from the above embodiments in that the upper end of the threaded rod 313 is inserted through the upper end of the outer shell 311, and a first gear 315 is fixedly installed on the upper end of the threaded rod 313, a second gear 316 is rotatably installed on the upper end of the outer shell 311, a first motor 317 is fixedly installed in the outer shell 311, an output end of the first motor 317 is inserted through the upper end of the outer shell 311 and is fixedly connected to the second gear 316, the first gear 315 is meshed with the second gear 316, and the first motor 317 is driven to drive the second gear 316 to rotate, thereby driving the first gear 315 to rotate, thereby driving the threaded rod 313 to rotate, thereby achieving the effect of switching the circular saw 303 and the scissors 305.

[0037] Embodiment 4 is different from the above embodiments in that Figure 6 As shown, the trimming mechanism 3 also includes a mounting plate 314, which is fixedly mounted on one end of the mechanical arm 2, and the housing 311 is rotatably mounted on the lower end of the mounting plate 314. A second motor is fixedly mounted on the upper end of the mounting plate 314, and an output end of the second motor passes through the mounting plate 314 and is fixedly connected to the drive shaft 306. An arc-shaped rack 319 is fixedly mounted on the lower end of the mounting plate 314, and the first gear 315 is meshed with the arc-shaped rack 319. When the first motor 317 drives the second gear 316 to rotate, the first gear 315 rotates accordingly, and the first gear 315 acts on the arc-shaped rack 319 to drive the housing 311 to rotate, switching the circular saw 303 or the scissors 305 outward to facilitate trimming operations.

[0038] Embodiment 5 is different from the above embodiments in that Figure 7 As shown, the scissors 305 include a fixed blade 3051 and a rotating blade 3052, one end of the fixed blade 3051 is inserted into the interior of the shell 311 and fixedly connected thereto, one side of one end of the rotating blade 3052 is rotatably connected to one side of the middle part of the fixed blade 3051, the other side of the middle part of the fixed blade 3051 is provided with an arc opening 3053, a sliding roller is rotatably installed on the other side of one end of the rotating blade 3052, and the sliding roller passes through the arc opening 3053, a boss 3055 is fixedly installed at the edge of the upper end of the second pulley 304, a linkage rod 3056 is rotatably installed on the upper end of the boss 3055, one end of the linkage rod 3056 is fixedly connected to the sliding roller, the second pulley 304 rotates to drive the boss 3055 to rotate, and the rotating blade 3052 is driven to rotate through the linkage rod 3056, and the fixed blade 3051 is cooperated to shear the branches.

[0039] The middle part of the driving shaft 306 is axially provided with a plurality of slide grooves in a circular array, and the inner wall of the clamping ring 310 is provided with a plurality of sliders in a circular array. Each slider cooperates with the corresponding slide groove, so that the clamping ring 310 can move up and down along the driving shaft 306, but the two will not rotate relative to each other.

[0040] Embodiment 6 is different from the above embodiments in that two roller cutter mechanisms 4 are symmetrically installed on both sides of the head of the vehicle body 1, and the roller cutter mechanism 4 includes a first electric cylinder 401, a second electric cylinder 402, a movable arm 403, a third motor 404 and a roller cutter 405. The first electric cylinder 401 and the second electric cylinder 402 are both rotatably installed on the head of the vehicle body 1, and the telescopic end of the second electric cylinder 402 is rotatably equipped with a cylinder mounting seat, the cylinder body of the first electric cylinder 401 is fixedly installed on the cylinder mounting seat, and the movable arm 403 is installed on the first electric cylinder 401. The telescopic end of the movable arm 403 is fixedly mounted with a roller cutter mounting seat at the end thereof, the third motor 404 is fixedly mounted on the roller cutter mounting seat, the roller cutter 405 is fixedly mounted on the output end of the third motor 404, the roller cutter 405 can be controlled to be telescopic by the first electric cylinder 401, the first electric cylinder 401 is pushed by the second electric cylinder 402 to change its angle, the position of the roller cutter 405 can be flexibly controlled in conjunction with the movable arm 403, the roller cutter 405 is driven to rotate by the third motor 404, and the branches in front of the vehicle body 1 can be trimmed to avoid affecting the forward movement of the vehicle body 1.

[0041] like Figure 8 As shown, the roller 405 includes a shaft 4051, a plurality of mounting plates 4052 and a plurality of spiral blades 4053. The shaft 4051 is fixedly connected to the output end of the third motor 404 and is rotatably mounted on the roller mounting seat through a bearing. The plurality of mounting plates 4052 are fixedly mounted on the shaft 4051 in parallel. The plurality of spiral blades 4053 are fixedly mounted on the edges of the plurality of mounting plates 4052 in a circular array. The third motor 404 is used to drive the shaft 4051 to rotate, thereby driving the spiral blades 4053 to rotate, so as to trim the branches in front of the vehicle body 1 to avoid affecting the forward movement of the vehicle body 1.

[0042] The mounting plate 4052 is provided with a plurality of through holes in a circular array, which reduces the overall weight of the roller 405 , reduces the energy consumption of driving the roller 405 , and facilitates the falling of pruned branches and leaves, thereby preventing the pruned branches and leaves from being blocked in the roller 405 .

[0043] Working principle:

[0044] The mechanical arm 2 is used to drive the trimming mechanism 3 to the tree crown to be trimmed, and the first motor 317 is driven to drive the second gear 316 to rotate, and the first gear 315 is driven to rotate. The first gear 315 acts on the arc-shaped rack 319, and drives the housing 311 to rotate, and the circular saw 303 is switched outward. At the same time, the first gear 315 drives the threaded rod 313 to rotate, and the threaded rod 313 acts on the lifting plate 312 to drive it to rise. The lifting plate 312 drives the clamping ring 310 to rise, so that the clamping ring 310 is clamped with the third pulley 308;

[0045] The second motor is driven to rotate the driving shaft 306, the driving shaft 306 drives the clamping ring 310 to rotate, the clamping ring 310 drives the third belt pulley 308 to rotate, the third belt pulley 308 drives the first belt pulley 301 to rotate, thereby driving the circular saw 303 to rotate, and performing large-scale rough pruning of the tree crown;

[0046] After the crown is roughly trimmed, the first motor 317 is driven in the reverse direction, the first gear 315 rotates in the reverse direction and acts on the arc-shaped rack 319, driving the housing 311 to rotate, switching the scissors 305 outward, and at the same time, the first gear 315 drives the clamping ring 310 to descend, so that the clamping ring 310 is clamped with the fourth pulley 309;

[0047] The second motor is driven again to drive the driving shaft 306 to rotate. The driving shaft 306 drives the fourth pulley 309 to rotate through the clamping ring 310. The fourth pulley 309 drives the second pulley 304 to rotate, and drives the scissors 305 to perform fine trimming of the tree crown.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tree crown high-position pruning device, comprising a vehicle body, a mechanical arm is installed at the rear of the vehicle body, and a pruning mechanism is arranged at one end of the mechanical arm, characterized in that: The trimming mechanism includes a circular saw assembly, a scissors assembly and a driving assembly, the circular saw assembly includes a first pulley, a connecting shaft and a circular saw, the first pulley and the circular saw are both fixedly mounted on the connecting shaft, the scissors assembly includes a second pulley and scissors, the second pulley can drive the scissors to cut, the driving assembly includes a driving shaft, a fixing frame, a third pulley, a fourth pulley and a clamping ring, the third pulley and the fourth pulley are rotatably mounted on the top and bottom of the fixing frame respectively, the third pulley is connected to the first pulley through a belt, the fourth pulley is connected to the second pulley through a belt, the driving shaft passes through the axis of the third pulley and the axis of the fourth pulley, the clamping ring is arranged between the third pulley and the fourth pulley, and the clamping ring is slidably mounted on the driving shaft, the upper end and the lower end of the clamping ring are both fixedly mounted with a plurality of clamping blocks, the lower end of the third pulley and the upper end of the fourth pulley are both provided with a plurality of clamping grooves matching the clamping blocks.

2. A tree crown high pruning device according to claim 1, characterized in that: The trimming mechanism also includes a shell, the connecting shaft, the second pulley and the driving shaft are all rotatably installed inside the shell, a lifting plate is slidably installed on the inner wall of the shell, one end of the lifting plate is rotatably connected to a clamping ring, a threaded rod is rotatably installed in the shell, the threaded rod passes through the lifting plate, and the threaded rod is threadedly matched with the lifting plate.

3. A tree crown high pruning device according to claim 2, characterized in that: The upper end of the threaded rod is inserted through the upper end of the shell, and a first gear is fixedly installed on the upper end of the threaded rod, a second gear is rotatably installed on the upper end of the shell, a first motor is fixedly installed in the shell, an output end of the first motor is inserted through the upper end of the shell and fixedly connected to the second gear, and the first gear is meshed with the second gear.

4. The high-crown pruning device according to claim 3, characterized in that: The trimming mechanism also includes a mounting plate, which is fixedly mounted on one end of the mechanical arm, and the outer shell is rotatably mounted on the lower end of the mounting plate. A second motor is fixedly mounted on the upper end of the mounting plate, and an output end of the second motor is fixedly connected to the driving shaft. An arc-shaped rack is fixedly mounted on the lower end of the mounting plate, and the first gear is meshed with the arc-shaped rack.

5. The high-crown pruning equipment according to claim 2, characterized in that: The scissors include a fixed blade and a rotating blade, one end of the fixed blade is inserted into the interior of the shell and fixedly connected thereto, one side of one end of the rotating blade is rotatably connected to one side of the middle of the fixed blade, the other side of the middle of the fixed blade is provided with an arc-shaped opening, a sliding roller is rotatably installed on the other side of one end of the rotating blade, the sliding roller is inserted through the arc-shaped opening, a boss is fixedly installed at the edge of the upper end of the second pulley, a linkage rod is rotatably installed on the upper end of the boss, and one end of the linkage rod is rotatably connected to the other side of one end of the rotating blade.

6. The high-crown pruning device according to claim 1, characterized in that: The middle part of the driving shaft is axially provided with a plurality of slide grooves in an annular array, and the inner wall of the clamping ring is provided with a plurality of sliding blocks in an annular array, and each of the sliding blocks is matched with a corresponding slide groove.

7. The high-crown pruning equipment according to claim 1, characterized in that: Two roller cutter mechanisms are symmetrically installed on both sides of the vehicle head, and the roller cutter mechanism includes a first electric cylinder, a second electric cylinder, a movable arm, a third motor and a roller cutter. The first electric cylinder and the second electric cylinder are both rotatably installed on the head of the vehicle body, and the telescopic end of the second electric cylinder is rotatably equipped with a cylinder mounting seat. The cylinder body of the first electric cylinder is fixedly installed on the cylinder mounting seat, the movable arm is installed on the telescopic end of the first electric cylinder, and the end of the movable arm is fixedly installed with a roller cutter mounting seat, the third motor is fixedly installed on the roller cutter mounting seat, and the roller cutter is fixedly installed on the output end of the third motor.

8. The high-crown pruning equipment according to claim 7, characterized in that: The roller cutter includes a shaft, multiple mounting plates and multiple spiral blades. The shaft is fixedly connected to the output end of the third motor and is rotatably mounted on the roller cutter mounting seat through a bearing. The multiple mounting plates are fixedly mounted on the shaft in parallel, and the multiple spiral blades are fixedly mounted on the edges of the multiple mounting plates in a circular array.

9. The high-crown pruning equipment according to claim 8, characterized in that: The mounting plate is provided with a plurality of through holes in an annular array.

10. A pruning process for tree crown shaping, using a tree crown high position pruning device as claimed in any one of claims 1 to 9, characterized in that: The steps include: The mechanical arm is used to drive the pruning mechanism to the crown of the tree to be pruned, and the first motor is driven to drive the second gear to rotate, and the first gear is driven to rotate, thereby driving the threaded rod to rotate, and the threaded rod acts on the lifting plate to drive it to rise, and the lifting plate drives the clamping ring to rise, so that the clamping ring is clamped with the third pulley; The second motor is driven to rotate the driving shaft, the driving shaft drives the clamping ring to rotate, the clamping ring drives the third belt pulley to rotate, the third belt pulley drives the first belt pulley to rotate, thereby driving the circular saw to rotate, and performing large-scale rough pruning of the tree crown; After the tree crown is roughly trimmed, the first motor is driven in reverse, thereby driving the clamping ring to descend, so that the clamping ring is clamped with the fourth pulley; The second motor is driven again to drive the driving shaft to rotate, and the driving shaft drives the fourth pulley to rotate through the clamping ring, and the fourth pulley drives the second pulley to rotate, thereby driving the scissors to perform fine trimming of the tree crown.

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