CN114128482A

CN114128482A - Lawn trimming device for urban building gardens and using method thereof

Info

Publication number: CN114128482A
Application number: CN202111444809.XA
Authority: CN
Inventors: 万平平; 逯朋
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-03-04
Anticipated expiration: 2041-11-30
Also published as: CN114128482B

Abstract

The invention discloses a lawn trimming device for urban building gardens and a using method thereof, wherein the lawn trimming device comprises a vehicle body, wherein the vehicle body is rotationally connected with a spline shaft, the spline shaft is slidably sleeved with a spline housing, the spline housing is fixedly sleeved with a driven bevel gear, and the spline housing is also rotationally connected with a movable connecting rod; the vehicle body is connected with a movable plate in a sliding mode, the movable connecting rod is connected with the movable plate, the movable plate is connected with a second rotating shaft in a rotating mode, a driving bevel gear is fixedly sleeved on the second rotating shaft, and the driving bevel gear is meshed with a driven bevel gear; the spline shaft is also fixedly sleeved with a groove cam, the groove cam is provided with a chute, the movable plate is connected with a reciprocating rod, and the reciprocating rod is arranged in the chute in a sliding manner; the movable plate is also rotatably connected with a pruning knife, and the pruning knife and the second rotating shaft are both connected with a driving mechanism. The height of the lawn to be trimmed can be freely adjusted in the device, and the trimming knife can move during trimming, so that the trimming range of the trimming knife is effectively enlarged, and the efficiency and the quality of trimming the lawn are effectively improved.

Description

Lawn trimming device for urban building gardens and using method thereof

Technical Field

The invention relates to the technical field of building gardens, in particular to a lawn trimming device for urban building gardens and a using method thereof.

Background

The garden is a beautiful natural environment and a rest area which are created by applying engineering technology and artistic means in a certain region and modifying the terrain (or further building a mountain, stacking stones and managing water), planting trees, flowers and plants, building buildings, arranging garden roads and the like, and is called as a garden. In the traditional Chinese architecture, the classical garden architecture is a unique one and has great achievement. An artistic form in the traditional Chinese culture is deeply influenced by the traditional 'happy' culture. The mental culture of human subjects is set off by taking terrain, mountains and waters, building groups, flowers and trees and the like as carriers. Gardens have a number of epitaxial concepts: garden communities, garden streets, garden cities (ecological cities), national garden counties, and so on. Modern life style and living environment have urgent functional and artistic requirements on gardens, and have more and more important roles in modern life and future people development directions.

Lawns are one of the existing landscape or facilities, and in order to maintain beauty, lawns need to be maintained regularly, and garden maintenance personnel usually adopt weeding equipment to perform maintenance operations. Due to the unique attractive requirement of gardens, the grass needs to be controlled at a certain height, the conventional weeding equipment cannot meet the requirement, the height can be adjusted only by changing the handheld height by garden maintenance personnel, and the lawn is easily inconsistent in height and attractive in appearance due to errors caused by manual control. In addition, in the trimming process, if a large trimming range is required, a large trimming blade is required, the larger the diameter of the trimming blade is, the more dangerous the operation is, the smaller the trimming blade increases the trimming burden of workers, the trimming work is not facilitated, and the efficiency and the quality of lawn trimming are seriously influenced.

Disclosure of Invention

In order to solve the problems in the prior art, the lawn trimming device for the urban building gardens and the using method thereof are provided.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention provides a lawn trimming device for an urban building garden, which comprises a vehicle body, wherein the vehicle body is rotatably connected with a spline shaft, the spline shaft is slidably sleeved with a spline sleeve, the spline sleeve is fixedly sleeved with a driven bevel gear, and the spline sleeve is also rotatably connected with a movable connecting rod; the vehicle body is connected with a movable plate in a sliding mode, the movable connecting rod is connected with the movable plate, the movable plate is connected with a second rotating shaft in a rotating mode, a driving bevel gear is fixedly sleeved on the second rotating shaft, and the driving bevel gear is meshed with the driven bevel gear; the spline shaft is further fixedly sleeved with a groove cam, the groove cam is provided with a sliding groove, the movable plate is connected with a reciprocating rod, and the reciprocating rod is slidably arranged in the sliding groove; the movable plate is further rotatably connected with a pruning knife, and the pruning knife and the second rotating shaft are both connected with a driving mechanism.

Preferably, the driving mechanism comprises a motor fixedly connected with the movable plate, the motor is connected with a first rotating shaft, and the first rotating shaft is connected with the pruning knife; the outer side of the pruning knife is provided with a protective cover, the protective cover is rotatably connected with the first rotating shaft, and the protective cover is connected with the movable plate through a fixed rod.

Preferably, fixed cover is equipped with the driving gear in the first pivot, the fly leaf rotates and is connected with the pinion, fixed cover is equipped with the gear wheel in the second pivot, the driving gear with the pinion meshes mutually, the pinion with the gear wheel meshes mutually.

Preferably, the two ends of the vehicle body are fixedly connected with sliding grooves, the movable plate is rotatably connected with walking wheels, and the walking wheels are arranged in the sliding grooves in a rolling mode.

Preferably, the vehicle body is further fixedly connected with a supporting seat, and the spline shaft is rotatably connected with the supporting seat.

Preferably, the vehicle body is further fixedly connected with a dust collector, one end of the dust collector is communicated with a hose, the other end of the dust collector is communicated with a storage box, the hose is communicated with the protective cover, and the hose is arranged at the upper end of the pruning knife.

Preferably, the vehicle body is further fixedly connected with a fixed leg, a cavity is formed in the fixed leg, an adjusting leg is connected in the cavity in a sliding mode, and a plurality of positioning holes are formed in the adjusting leg; the fixing legs are further connected with fixing screws in a threaded mode, one ends of the fixing screws are connected with nuts in a threaded mode, and the other ends of the fixing screws are arranged in the positioning holes.

The invention also provides a using method of the lawn trimming device for the urban building gardens, and the lawn trimming device for the urban building gardens comprises the following steps:

s1: the driving mechanism drives the second rotating shaft to rotate, and the second rotating shaft drives the spline shaft to rotate through the driving bevel gear and the driven bevel gear;

s2: the spline shaft further drives the spline sleeve and the groove cam to rotate, and meanwhile, the trimming knife is controlled to rotate through the driving mechanism;

s3: when the groove cam rotates, the reciprocating rod is driven to reciprocate in the horizontal direction through the sliding groove, the reciprocating rod drives the movable plate to reciprocate, meanwhile, the movable plate drives the trimming knife to reciprocate, and therefore trimming of the lawn is achieved.

Preferably, in step S1, the nut is loosened, and then the fixing screw is rotated, so that the fixing screw moves out of the positioning hole, the adjusting leg slides in the cavity of the fixing leg according to the height of the lawn to be trimmed, after the height of the adjusting leg is adjusted, the fixing screw is screwed into the positioning hole, and the nut is screwed, so as to adjust the height of the adjusting leg.

Preferably, the method of operation of the drive mechanism comprises: the motor drives the first rotating shaft to rotate, the first rotating shaft drives the pruning knife to rotate, the first rotating shaft drives the small gear to rotate through the driving gear, and the small gear drives the second rotating shaft to rotate through the large gear.

Compared with the prior art, the invention has the beneficial effects that:

1. the lawn trimmer is provided with the trimmer capable of reciprocating in the horizontal direction, when the second rotating shaft rotates, the bevel gear can drive the spline shaft to rotate, the spline shaft can drive the groove cam to rotate when rotating, so that the reciprocating rod can be driven to reciprocate in the horizontal direction under the action of the groove cam, and when the reciprocating rod moves, the spline sleeve is driven to slide along the horizontal direction of the spline shaft through the movable plate, so that the driving bevel gear and the driven bevel gear are always in a meshed state, and the movable plate can drive the trimmer to reciprocate at the moment, so that the trimming range of a lawn can be adjusted without large trimmer and repeated labor, and the lawn trimmer is reasonable in structure, ingenious in design, convenient to operate, capable of effectively improving the efficiency and the quality of trimming the lawn, and capable of reducing the labor intensity of workers.

2. The height-adjustable trimming knife is provided with the height-adjustable adjusting leg, the adjusting leg can slide along the fixing leg at the moment by screwing out the fixing screw, so that the height of the trimming knife from the lawn is adjusted, the relative fixing of the position of the adjusting leg can be realized by screwing the fixing screw into the positioning hole, the operation is convenient, the height of the trimming knife can be freely adjusted according to the actual trimming requirement of the lawn, and therefore, the height-adjustable trimming knife can be applied to wider scenes and has extremely high popularization value.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an overall front view of the present invention;

fig. 2 is an overall side view of the present invention.

Description of reference numerals:

1, a vehicle body; 2, a protective cover; 3 a first rotating shaft; 4, a gearwheel; 5 a second rotating shaft; 6, a motor; 7 travelling wheels; 8 movable plates; 81 reciprocating rods; 9 driving bevel gears; 10 a trimming blade; 11 a supporting seat; 12 a driven bevel gear; 13 pushing hands; 14 a vacuum cleaner; 15 chute; 16 positioning holes; 161 fixed leg; 162 set screws; 163 adjusting the legs; 164 a nut; 17 a storage box; 171 a hose; 18 spline housing; 181 movable connecting rods; 19 a groove cam; 20 fixing the rod; 21 a drive gear; 22 a pinion gear; 23 spline shaft.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1-2, the present embodiment provides a lawn mowing device for an urban building garden, which includes a vehicle body 1, wherein the vehicle body 1 is rotatably connected with a spline shaft 23, the spline shaft 23 is slidably sleeved with a spline housing 18, the vehicle body 1 is further fixedly connected with a supporting seat 11, and the spline shaft 23 is rotatably connected with the supporting seat 11.

The spline housing 18 is fixedly sleeved with the driven bevel gear 12, the spline housing 18 is also rotatably connected with a movable connecting rod 181, the vehicle body 1 is slidably connected with the movable plate 8, and the movable connecting rod 181 is fixedly connected with the movable plate 8. The movable plate 8 can drive the spline housing 18 to move through the movable connecting rod 181, so as to drive the spline housing 18 to slide along the horizontal direction of the spline shaft 23. And because the movable connecting rod 181 is rotatably connected with the spline housing 18 through the bearing, when the spline housing 18 rotates, the movable connecting rod 181 is not driven to rotate.

The movable plate 8 is rotatably connected with a second rotating shaft 5, the second rotating shaft 5 is fixedly sleeved with a driving bevel gear 9, and the driving bevel gear 9 is meshed with a driven bevel gear 12; the spline shaft 18 is further fixedly sleeved with a groove cam 19, the groove cam 19 is provided with a sliding groove, the movable plate 8 is connected with a reciprocating rod 81, and the reciprocating rod 81 is arranged in the sliding groove in a sliding manner.

The support seats 11 are provided in total in three, two of the support seats 11 being provided at both ends of the spline shaft 23, the other support seat 11 being provided at the middle portion of the spline shaft 23, and the groove cam 19 being provided between the two support seats 11. The support seat 11 supports the rotation of the spline shaft 23, and the spline shaft 23 can only rotate without moving in the horizontal direction under the action of the support seat 11.

The reciprocating rod 81 is slidably disposed in the sliding slot of the grooved cam 19, and when the grooved cam 19 rotates under the action of the sliding slot, the reciprocating rod 81 can be driven to reciprocate horizontally, the reciprocating rod 81 can drive the movable plate 8 to move, the movable plate 8 can drive the second rotating shaft 5 to rotate, and the movable plate 8 can drive the spline housing 18 to slide along the length direction of the spline shaft 23 through the movable connecting rod 181. The movable connecting rod 181 is used to drive the spline housing 18 to move, so that the drive bevel gear 9 and the driven bevel gear 12 are always in an engaged state.

The movable plate 8 is further rotatably connected with a pruning blade 10, and the pruning blade 10 and the second rotating shaft 5 are both connected with a driving mechanism. The pruning blade 10 does not rotate to prune the lawn, and the movable plate 8 can drive the pruning blade 10 to reciprocate horizontally, so that a larger pruning range can be realized only by the smaller pruning blade 10, if the larger pruning blade is adopted, the pruning blade is inconvenient to drive to rotate, and if the pruning blade is too large, the whole weight of the device is increased, unnecessary damage is easily caused by the too large pruning blade, and the safety of workers is not facilitated. If the pruning knife can not do reciprocating motion in the horizontal direction, the labor burden of workers can be seriously increased, and the efficiency and the quality of lawn pruning are reduced.

The driving mechanism comprises a motor 6 fixedly connected with a movable plate 8, the motor 6 is connected with a first rotating shaft 3, and the first rotating shaft 3 is connected with a pruning shear 10; the outer side of the trimming cutter 10 is provided with a protective cover 2, the protective cover 2 is rotatably connected with the first rotating shaft 3, and the protective cover 2 is connected with the movable plate 8 through a fixed rod 20.

The first rotating shaft 3 is fixedly sleeved with a driving gear 21, the movable plate 8 is rotatably connected with a small gear 22, the second rotating shaft 5 is fixedly sleeved with a large gear 4, the driving gear 21 is meshed with the small gear 22, and the small gear 22 is meshed with the large gear 4.

The diameter of the small gear 22 is far smaller than that of the large gear 4, the diameter of the driving bevel gear 9 is far smaller than that of the driven bevel gear 12, the rotating speed of the spline shaft 23 can be adjusted through the two gear reduction mechanisms, the rotating speed of the spline shaft 23 can be far smaller than that of the first rotating shaft 3, and therefore the motor 6 can drive the trimming knife 10 to rotate and the trimming knife 10 to reciprocate horizontally, the energy saving effect is achieved, and the overall cost of the device is reduced.

The two ends of the vehicle body 1 are fixedly connected with sliding chutes 15, the movable plate 8 is rotatably connected with walking wheels 7, and the walking wheels 7 are arranged in the sliding chutes 15 in a rolling manner. The traveling wheels 7 play a role in reducing friction force, thereby facilitating the horizontal reciprocating motion of the movable plate 8.

The vehicle body 1 is also fixedly connected with a dust collector 14, one end of the dust collector 14 is communicated with a hose 171, the other end of the dust collector 14 is communicated with a storage box 17, the hose 171 is communicated with the protective cover 2, and the hose 171 is arranged at the upper end of the trimming cutter 10.

The vacuum cleaner 14 cooperates with the protective cover 2 such that when the trimmer blade 10 is used to trim a lawn, the cut grass is located within the protective cover 2 and the vacuum cleaner 14 is operated to draw the cut grass into the storage bin 7. Therefore, the environment can be protected, great dust pollution can not be generated, trimming work of workers can be facilitated, and safety of the workers can be protected.

The vehicle body 1 is also fixedly connected with a fixed leg 161, a cavity is arranged in the fixed leg 161, an adjusting leg 163 is connected in the cavity in a sliding manner, and a plurality of positioning holes 16 are formed in the adjusting leg 163; the fixing leg 161 is further screwed with a fixing screw 162, one end of the fixing screw 162 is screwed with a nut 164, and the other end of the fixing screw 162 is disposed in the positioning hole 16.

The left end of the fixing screw 162 is provided with threads, and the right end of the fixing screw 162 is a smooth outer surface, so that the fixing screw 162 can be conveniently inserted into the positioning hole 16, through holes are formed in both ends of the fixing leg 161, and the fixing screw 162 penetrates through the fixing leg 161. The fixing screw 162 is used to fix the position of the leg 163 relative to each other, so that the height of the trimming blade 10 can be easily adjusted to suit lawn trimming at different heights.

The use method of the lawn trimming device for the urban building gardens is characterized in that the lawn trimming device for the urban building gardens comprises the following steps:

s1: the driving mechanism drives the second rotating shaft 5 to rotate, and the second rotating shaft 5 drives the spline shaft 23 to rotate through the driving bevel gear 9 and the driven bevel gear 12;

s2: the spline shaft 23 further drives the spline sleeve 18 and the groove cam 19 to rotate, and meanwhile, the trimming cutter 10 is controlled to rotate through the driving mechanism;

s3: when the groove cam 19 rotates, the reciprocating rod 81 is driven to reciprocate horizontally by the sliding groove, the reciprocating rod 81 drives the movable plate 8 to reciprocate, and the movable plate 8 drives the trimming blade 10 to reciprocate, so that the trimming work of the lawn is realized, the movable plate 8 drives the second rotating shaft 5 and the spline housing 18 to reciprocate horizontally, in the process, the spline housing 18 slides relative to the spline shaft 23, and the driving bevel gear 9 and the driven bevel gear 12 are always in a meshed state.

In step S1, the nut 164 is loosened, the fixing screw 162 is then rotated, so that the fixing screw 162 moves out of the positioning hole 16, the adjusting leg 163 slides in the cavity of the fixing leg 161 according to the height of the lawn to be cut, after the height of the adjusting leg 163 is adjusted, the fixing screw 162 is screwed into the positioning hole 16, and the nut 164 is screwed, so that the fixing work of adjusting the height of the leg 163 is realized.

The method for operating the driving mechanism comprises the following steps: the motor 6 drives the first rotating shaft 3 to rotate, the first rotating shaft 3 drives the pruning knife 10 to rotate, the first rotating shaft 3 drives the small gear 22 to rotate through the driving gear 21, and the small gear 22 drives the second rotating shaft 5 to rotate through the large gear 4.

In step S3, the vacuum cleaner 14 is started while the trimmer cutter 10 is operating, and the vacuum cleaner 14 performs the suction work of the dust and cut grass inside the hood 2 through the hose 171 and is sucked into the storage box 17 by the vacuum cleaner 14.

It should be noted that, when the second rotating shaft 5 rotates, the bevel gear can drive the spline shaft 23 to rotate, and the spline shaft 23 can drive the groove cam 19 to rotate when rotating, so that under the action of the groove cam 19, the reciprocating rod 81 can be driven to reciprocate in the horizontal direction, and when the reciprocating rod 81 moves, the movable plate 8 can drive the spline housing 18 to slide along the horizontal direction of the spline shaft 23, so that the driving bevel gear 9 and the driven bevel gear 12 can be always in a meshed state, and at this time, the movable plate 8 can drive the trimming blade 10 to reciprocate, so that a large trimming blade is not needed, repeated labor is not needed for many times, adjustment of the trimming range of the lawn can be realized, and the lawn trimmer has the advantages of reasonable structure, ingenious design, convenient operation, effective improvement of the efficiency and quality of lawn trimming, and reduction of labor intensity of workers.

In addition, the height-adjustable trimming blade is also provided with the height-adjustable adjusting leg 163, the fixing screw 162 is screwed out, the adjusting leg 163 can slide along the fixing leg 161 at the moment, so that the height of the trimming blade 10 from the lawn is adjusted, the fixing screw 162 is screwed into the positioning hole 16, the relative fixing of the position of the adjusting leg 163 can be realized, the operation is convenient, the height of the trimming blade 10 can be freely adjusted according to the actual trimming requirement of the lawn, and therefore, the height-adjustable trimming blade can be applied to wider scenes and has extremely high popularization value.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lawn trimming device for an urban building garden comprises a vehicle body (1) and is characterized in that the vehicle body (1) is rotatably connected with a spline shaft (23), the spline shaft (23) is slidably sleeved with a spline housing (18), the spline housing (18) is fixedly sleeved with a driven bevel gear (12), and the spline housing (18) is also rotatably connected with a movable connecting rod (181); the trolley body (1) is connected with a movable plate (8) in a sliding mode, the movable connecting rod (181) is connected with the movable plate (8), the movable plate (8) is connected with a second rotating shaft (5) in a rotating mode, a driving bevel gear (9) is fixedly sleeved on the second rotating shaft (5), and the driving bevel gear (9) is meshed with the driven bevel gear (12); the spline shaft (18) is further fixedly sleeved with a groove cam (19), the groove cam (19) is provided with a sliding groove, the movable plate (8) is connected with a reciprocating rod (81), and the reciprocating rod (81) is arranged in the sliding groove in a sliding manner; the movable plate (8) is further rotatably connected with a pruning knife (10), and the pruning knife (10) and the second rotating shaft (5) are both connected with a driving mechanism.

2. A lawn mowing device according to claim 1, wherein the driving mechanism comprises a motor (6) fixedly connected to the movable plate (8), the motor (6) is connected to a first rotating shaft (3), and the first rotating shaft (3) is connected to the mowing blade (10); the trimming cutter is characterized in that a protective cover (2) is arranged on the outer side of the trimming cutter (10), the protective cover (2) is rotatably connected with the first rotating shaft (3), and the protective cover (2) is connected with the movable plate (8) through a fixing rod (20).

3. The lawn mowing device for the urban construction gardens as claimed in claim 2, wherein the first rotating shaft (3) is fixedly sleeved with a driving gear (21), the movable plate (8) is rotatably connected with a small gear (22), the second rotating shaft (5) is fixedly sleeved with a large gear (4), the driving gear (21) is meshed with the small gear (22), and the small gear (22) is meshed with the large gear (4).

4. The lawn mowing device for the urban building gardens as claimed in claim 1, wherein sliding grooves (15) are fixedly connected to two ends of the vehicle body (1), the movable plate (8) is rotatably connected with traveling wheels (7), and the traveling wheels (7) are arranged in the sliding grooves (15) in a rolling manner.

5. The lawn mowing device for the urban building gardens according to claim 1, wherein the vehicle body (1) is further fixedly connected with a supporting seat (11), and the spline shaft (23) is rotatably connected with the supporting seat (11).

6. The lawn mowing device for the urban building gardens as claimed in claim 1, wherein a dust collector (14) is fixedly connected to the vehicle body (1), a hose (171) is communicated with one end of the dust collector (14), a storage box (17) is communicated with the other end of the dust collector (14), the hose (171) is communicated with the protective cover (2), and the hose (171) is arranged at the upper end of the mowing knife (10).

7. The lawn mowing device for the urban building gardens as claimed in claim 1, wherein the vehicle body (1) is further fixedly connected with a fixing leg (161), a cavity is formed in the fixing leg (161), an adjusting leg (163) is slidably connected in the cavity, and a plurality of positioning holes (16) are formed in the adjusting leg (163); the fixing leg (161) is further connected with a fixing screw (162) in a threaded mode, one end of the fixing screw (162) is connected with a nut (164) in a threaded mode, and the other end of the fixing screw (162) is arranged in the positioning hole (16).

8. A method of using a lawn mowing apparatus for an urban building garden, comprising the steps of:

s1: the driving mechanism drives the second rotating shaft (5) to rotate, and the second rotating shaft (5) drives the spline shaft (23) to rotate through the driving bevel gear (9) and the driven bevel gear (12);

s2: the spline shaft (23) further drives the spline sleeve (18) and the groove cam (19) to rotate, and meanwhile the trimming knife (10) is controlled to rotate through the driving mechanism;

s3: when the groove cam (19) rotates, the reciprocating rod (81) is driven to reciprocate in the horizontal direction through the sliding groove, the reciprocating rod (81) drives the movable plate (8) to reciprocate, meanwhile, the movable plate (8) drives the trimming knife (10) to reciprocate, so that trimming of a lawn is achieved, the movable plate (8) drives the second rotating shaft (5) and the spline sleeve (18) to reciprocate in the horizontal direction, in the process, the spline sleeve (18) slides relative to the spline shaft (23), and the driving bevel gear (9) and the driven bevel gear (12) are always in a meshed state.

9. The method for using the lawn mowing device for the urban building garden as claimed in claim 8, wherein in step S1, the nut (164) is unscrewed, the fixing screw (162) is rotated to move the fixing screw (162) out of the positioning hole (16), the adjusting leg (163) slides in the cavity of the fixing leg (161) according to the height of the lawn to be mowed, after the height of the adjusting leg (163) is adjusted, the fixing screw (162) is screwed into the positioning hole (16), and the nut (164) is tightened, so that the height of the adjusting leg (163) is fixed.

10. The method of using a lawn mowing device for an urban building garden as set forth in claim 8, wherein the method of operating the driving mechanism comprises: the motor (6) drives the first rotating shaft (3) to rotate, the first rotating shaft (3) drives the pruning knife (10) to rotate, the first rotating shaft (3) drives the small gear (22) to rotate through the driving gear (21), and the small gear (22) drives the second rotating shaft (5) to rotate through the large gear (4).