Symmetrically adjustable three-wheel tea tree double-sided edge trimmer

Abstract

The utility model provides a three-wheel tea tree double-sided edge trimmer capable of being symmetrically adjusted. The three-wheel tea tree double-sided edge trimmer specifically comprises a chassis, a steering mechanism and an adjusting mechanism. The chassis comprises a chassis, front wheels, rear wheels and a power supply; the steering mechanism mainly comprises a handle, an upper vertical pipe, a lower vertical pipe, a rear fork, a box body, a bevel gear, a bearing retainer ring, an upper bearing and a lower bearing; the adjusting mechanism comprises a mounting bracket, two cutting knives, a self-adaptive angle adjusting mechanism and a transverse adjusting mechanism, and the position postures of the two cutting knives can be symmetrically adjusted through the self-adaptive angle adjusting mechanism and the transverse adjusting mechanism; the advancing direction of the edge trimmer is controlled through the steering mechanism, and the position posture of the cutter is symmetrically adjusted through the adjusting mechanism, so that the purposes of keeping an inter-row working channel and improving the yield and the quality of tea leaves are achieved. The utility model is subsidized by the key technology integration and demonstration project (approval number: 2022YFD1602003) for improving the quality and efficiency of the tea industry in the Shangnan County (the approval number: 2022YFD1602003).

Description

Technical Field

[0001] The utility model belongs to the field of agricultural machinery and is applied to trimming the edges between tea tree rows. Specifically, it relates to a three-wheel double-sided tea tree trimming machine with symmetric adjustment. Background Technique

[0002] China is a major tea-producing country with a wide range of tea tree planting areas, and the tea economy accounts for a high proportion in the agricultural economy. At present, hand-held trimming machines, self-propelled trimming machines, etc. are mainly used for tea tree trimming operations. When operating a hand-held trimming machine, it solely relies on human power, resulting in high labor intensity, high physical requirements for workers, and low production efficiency; the self-propelled trimming machine is labor-saving to operate, greatly reducing labor costs, alleviating the labor intensity of tea production, and improving tea production efficiency. The self-propelled trimming machine driven by a fuel engine has sufficient power and high working efficiency, but it has relatively large noise, vibration, and exhaust emissions during operation and is prone to polluting the tea trees themselves. The diesel engine is relatively heavy in quality and cumbersome to use. The self-propelled trimming machine driven by an electric motor is easy to operate, safe and reliable, has less noise during operation, and is more environmentally friendly. When the trimming machine is working, due to agronomic requirements, it is necessary to adjust the posture of the cutting tool so that the trimmed tea trees present a trapezoid with a wider upper part and a narrower lower part. At present, it is inconvenient to adjust the cutting tool of the trimming machine, and the adjustment range is small. Therefore, the utility model designs a self-propelled double-sided trimming machine with convenient cutting tool adjustment and adaptable to different tea tree row spacings, which can symmetrically adjust the posture of the cutting tool to quickly reach the required lateral width and trimming angle. Summary of the Invention

[0003] The utility model provides a three-wheel double-sided tea tree trimming machine with symmetric adjustment to solve the problems raised in the above background technique.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A three-wheel tea tree double-sided trimming machine with symmetric adjustment, comprising a chassis, a steering mechanism, and an adjustment mechanism; the chassis includes a chassis frame, front wheels, rear wheels, and a power source; there are two front wheels, and the two front wheels are installed in front of the chassis frame, and the front wheels are connected to the motor through a chain; there is one rear wheel, and the rear wheel is installed behind the chassis frame, and the rear wheel serves as a steering wheel; the power source is installed on the rear side of the chassis frame; the steering mechanism mainly consists of a handle, an upper riser pipe, a lower riser pipe, a rear fork, a box body, bevel gears, bearing retainers, upper bearings, and lower bearings. The lower end of the handle is fixedly connected to the first bevel gear, the second bevel gear is fixedly connected to the upper riser pipe, the third bevel gear meshes with the first bevel gear and the second bevel gear at the same time, the bevel gears are installed on the box body, the upper riser pipe is sleeved in the lower riser pipe, the rear fork is installed behind the chassis frame and connected to the lower riser pipe, the upper bearing is installed between the lower riser pipe and the chassis frame, the bearing retainer is installed on the lower riser pipe and is in close contact with the upper bearing, and the lower bearing is installed between the rear fork and the chassis frame; the adjustment mechanism includes a mounting bracket, a cutter, an adaptive angle adjustment mechanism, and a lateral adjustment mechanism, and the lower end of the mounting bracket is fixedly connected to the chassis frame.

[0006] As a preferred technical solution of the present invention, the steering mechanism makes the rotation direction of the handle consistent with the actual steering direction of the trimming machine through the meshing between bevel gears; the upper riser pipe is sleeved in the lower riser pipe, and the length of the upper riser pipe sleeved in the lower riser pipe is adjusted by a stopper to achieve the purpose of adjusting the height of the handle; the hanging core screw at the lower end of the lower riser pipe is adjusted to make the lower riser pipe and the rear fork tightly connected to the chassis frame to achieve the purpose of transmitting torque; the bearing retainer is threadedly connected to the lower riser pipe, and the steering mechanism is installed on the chassis frame by tightening the bearing retainer.

[0007] As a preferred technical solution of the present invention, the adaptive angle adjustment mechanism includes an upper central bidirectional screw tube, an upper left-handed screw column, and an upper right-handed screw column. The upper central bidirectional screw tube is connected to the mounting bracket through a circular hole on the mounting bracket. A fixed collar is installed on the upper central bidirectional screw tube, and a fixed piece is installed on the mounting bracket. The freedom degree of the upper central bidirectional screw tube is restricted by the fixed collar and the fixed piece, so that it can only perform a spiral motion; the threads at both ends of the upper central bidirectional screw tube are left-handed threads and right-handed threads respectively, and are respectively matched with the upper left-handed screw column and the upper right-handed screw column; when the upper central bidirectional screw tube is rotated, the upper left-handed screw column and the upper right-handed screw column move outward by corresponding displacements at the same time; in the adaptive adjustment mechanism, the upper left-handed screw column and the upper right-handed screw column are hinged to an adaptive connecting piece, and the other end of the adaptive connecting piece is hinged to the upper section of the cutter, so that after the adaptive adjustment mechanism finishes adjustment, the cutter can automatically adapt to the adjustment brought by the lateral adjustment.

[0008] As a preferred technical solution of the present utility model, the lateral adjustment mechanism includes a lower central bidirectional screw tube, a lower left-handed screw stud, and a lower right-handed screw stud, which are connected to the mounting bracket through the round holes on the mounting bracket. A fixed collar is installed on the lower central bidirectional screw tube, and a fixed piece is installed on the mounting bracket. The freedom degree of the lower central bidirectional screw tube is restricted by the fixed collar and the fixed piece, so that it can only perform a spiral movement; the threads at both ends of the lower central bidirectional screw tube are left-handed threads and right-handed threads respectively, and are respectively matched with the lower left-handed screw stud and the lower right-handed screw stud; when the lower central bidirectional screw tube is rotated, the lower left-handed screw stud and the lower right-handed screw stud simultaneously move outward by corresponding displacements; in the lateral adjustment mechanism, the lower left-handed screw stud and the lower right-handed screw stud are respectively hinged to the lower segment of the cutter, avoiding interference with the adaptive adjustment mechanism.

[0009] The beneficial effects of the present utility model are as follows:

[0010] The power output by the motor drives the sprocket, thereby driving the driving wheel and making the trimming machine move forward. The steering wheel located at the rear of the trimming machine is steered through the steering mechanism, and the handle is rotated in the opposite direction to the steering wheel through the bevel gear set, so that the rotation direction of the handle is the same as the actual movement direction of the trimming machine. This machine is driven by a motor, and its mechanical structure is a three-wheel walking, with the center of gravity close to the ground, so that the mechanical mass is reasonably distributed on the three wheels, greatly reducing the labor intensity of tea production, while significantly reducing the labor cost, improving the tea production efficiency, and being environmentally friendly, ensuring the quality of tea. Before the trimming machine enters the tea garden for work, the posture of the cutter is adjusted to adapt to the agronomic requirements of different tea gardens. The lateral adjustment mechanism and the adaptive angle adjustment mechanism do not interfere with each other, and can symmetrically adjust the posture of the cutter of the double-sided trimming machine, making the cutter as a whole present a trapezoidal shape with a narrow upper part and a wide lower part. Compared with other edge-cutting machines, the cutter adjustment is more convenient, can adapt to different tea tree row spacings, can symmetrically adjust the posture of the cutter, and quickly adjust to the required lateral width and trimming angle. The mounting bracket of the adjustment mechanism is connected to the front half of the chassis. During the operation of the double-sided trimming machine, the tea branches first cross the driving wheel and then are cut off by the cutter, so as not to hinder the progress of the trimming machine and improve the passing performance of the trimming machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the trimming machine of the present utility model;

[0012] Figure 2 It is a schematic structural diagram of the adjustment mechanism of the present utility model;

[0013] Figure 3 It is a schematic structural diagram of the steering mechanism of the present utility model;

[0014] Figure 4 It is a partial structural diagram of the steering mechanism of the present utility model

[0015] INDICATION OF THE DRAWINGS:

[0016] 1. Underframe; 2. Motor; 3. Front wheel; 4. Rear wheel; 5. Power supply; 6. Cutter; 7. Mounting bracket; 8. Upper central bidirectional screw tube; 9. Upper right-handed screw stud; 10. Adaptive connecting piece; 11. Lower central bidirectional screw tube; 12. Lower right-handed screw stud; 13. Lower left-handed screw stud; 14. Fixed collar; 15. Upper left-handed screw stud; 16. Fixed piece; 17. Handle; 18. Box body; 201. Bevel gear; 202. Bevel gear; 203. Bevel gear; 19. Upper vertical pipe; 20. Limiter; 21. Lower vertical pipe; 22. Bearing retainer; 231. Bearing; 232. Bearing; 24. Rear fork Specific embodiments

[0017] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and cannot be construed as limiting the specific protection scope of the present utility model.

[0018] Please refer to Figures 1 - 3 , the present utility model provides a three-wheel tea tree double-sided trimming machine with symmetric adjustment, including a chassis, a steering mechanism and an adjustment mechanism; the chassis includes an underframe 1, front wheels 3, rear wheels 4, and a power supply 5; there are two front wheels 3, and the two front wheels 3 are installed in front of the underframe 1, and the front wheels 3 are connected to the motor 2 through a chain; there is one rear wheel 4, and the rear wheel 4 is installed behind the underframe 1, and the rear wheel 4 is used as a steering wheel; the power supply 5 is installed on the rear side of the underframe 1; the steering mechanism mainly consists of a handle 17, an upper vertical pipe 19, a lower vertical pipe 21, a rear fork 24, a box body 18, bevel gears, a bearing retainer 22, an upper bearing 231, and a lower bearing 232. The lower end of the handle 17 is fixedly connected to the first bevel gear 201, the second bevel gear 203 is fixedly connected to the upper vertical pipe 19, the third bevel gear 202 is simultaneously meshed with the first bevel gear 201 and the second bevel gear 203, the bevel gears are installed on the box body 18, the upper vertical pipe 19 is sleeved in the lower vertical pipe 21, the rear fork 24 is installed behind the underframe 1 and connected to the lower vertical pipe 21, the upper bearing 231 is installed between the lower vertical pipe 21 and the underframe 1, the bearing retainer 22 is installed on the lower vertical pipe 21 and is in close contact with the upper bearing 231, and the lower bearing 232 is installed between the rear fork 24 and the underframe 1; the adjustment mechanism includes a mounting bracket 7, a cutter 6, an adaptive angle adjustment mechanism and a lateral adjustment mechanism, and the lower end of the mounting bracket 7 is fixedly connected to the underframe 1.

[0019] Further, the steering mechanism makes the rotation direction of the handle 17 consistent with the actual steering direction of the trimming machine through the meshing of bevel gears; the upper riser 19 is sleeved in the lower riser 21, and the length of the upper riser 19 sleeved in the lower riser 21 is adjusted by the stopper 20 to achieve the purpose of adjusting the height of the handle 17; the hanging core screw at the lower end of the lower riser 21 is adjusted to tightly connect the lower riser 21 and the rear fork 24 with the chassis 1 to achieve the purpose of transmitting torque; the bearing retaining ring 22 is threadedly connected with the lower riser 21, and the steering mechanism is installed on the chassis 1 by tightening the bearing retaining ring 22.

[0020] Further, the adaptive angle adjustment mechanism includes an upper central bidirectional screw tube 8, an upper left-handed screw 15, and an upper right-handed screw 9. The upper central bidirectional screw tube 8 is connected to the mounting bracket 7 through a circular hole on the mounting bracket 7. A fixed collar 14 is installed on the upper central bidirectional screw tube 8, and a fixed piece 16 is installed on the mounting bracket 7. The freedom degree of the upper central bidirectional screw tube 8 is restricted by the fixed collar 14 and the fixed piece 16, so that it can only perform a spiral motion; the threads at both ends of the upper central bidirectional screw tube 8 are respectively a left-handed thread and a right-handed thread, and are respectively matched with the upper left-handed screw 15 and the upper right-handed screw 9; when the upper central bidirectional screw tube 8 is rotated, the upper left-handed screw 15 and the upper right-handed screw 9 simultaneously move outward by corresponding displacements; in the adaptive adjustment mechanism, the upper left-handed screw 15 and the upper right-handed screw 9 are hinged to the adaptive connecting piece 10, and the other end of the adaptive connecting piece 10 is hinged to the upper section of the cutter 6, so that after the adaptive adjustment mechanism finishes adjusting, the cutter 6 can automatically adapt to the adjustment brought by the horizontal adjustment.

[0021] Further, the horizontal adjustment mechanism includes a lower central bidirectional screw tube 11, a lower left-handed screw 13, and a lower right-handed screw 12. It is connected to the mounting bracket 7 through a circular hole on the mounting bracket 7. A fixed collar 14 is installed on the lower central bidirectional screw tube 11, and a fixed piece 16 is installed on the mounting bracket 7. The freedom degree of the lower central bidirectional screw tube 11 is restricted by the fixed collar 14 and the fixed piece 16, so that it can only perform a spiral motion; the threads at both ends of the lower central bidirectional screw tube 11 are respectively a left-handed thread and a right-handed thread, and are respectively matched with the lower left-handed screw 13 and the lower right-handed screw 12; when the lower central bidirectional screw tube is rotated, the lower left-handed screw 13 and the lower right-handed screw 12 simultaneously move outward by corresponding displacements; in the horizontal adjustment mechanism, the lower left-handed screw 13 and the lower right-handed screw 12 are respectively hinged to the lower section of the cutter 6, avoiding interference with the adaptive adjustment mechanism.

[0022] The working principle of the present utility model

[0023] Before the edge trimming machine works, adjust the posture of the cutting knife according to the agronomic requirements of the tea garden and local conditions. By rotating the rotating handle of the transverse adjustment mechanism and the rotating handle of the adaptive angle adjustment mechanism, the left and right spiral studs on both sides symmetrically extend. By restricting the degrees of freedom of the cutting knife bracket, the transverse adjustment mechanism and the adaptive angle adjustment mechanism do not interfere with each other, and can symmetrically adjust the posture of the cutting knife of the double-sided edge trimming machine, making the overall cutting knife present a trapezoidal shape with a narrow upper part and a wide lower part. The motor transmits power to the driving wheel, and driven by the driving wheel, the whole edge trimming machine moves forward. After entering the tea garden, the cutting knife makes a reciprocating motion to cut the tea tree branches. The steering of the edge trimming machine is adjusted in real time through the steering mechanism. By adjusting the height adjustment handle of the length of the upper riser tube inserted into the lower riser tube, the edge trimming machine can adapt to workers of different heights.

[0024] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A symmetrically adjustable three-wheel tea tree double-sided trimming machine, characterized in that: The invention comprises a chassis, a steering mechanism and an adjustment mechanism; the chassis comprises a chassis (1), a front wheel (3), a rear wheel (4) and a power source (5); the front wheel (3) has two wheels, which are mounted in front of the chassis (1), wherein the front wheel (3) is connected to a motor (2) via a chain; the rear wheel (4) has one wheel, which is mounted behind the chassis (1), and serves as a steering wheel; the power source (5) is mounted on the rear side of the chassis (1); the steering mechanism mainly comprises a handle (17), an upper vertical tube (19), a lower vertical tube (21), a rear fork (24), a box (18), a bevel gear, a bearing retaining ring (22), an upper bearing (231) and a lower bearing (232); the lower end of the handle (17) is fixedly connected to a first bevel gear (201), and the second bevel gear (202) is fixedly connected to a second bevel gear (203). 3) is fixedly connected to the upper stand pipe (19), the third bevel gear (202) is meshed with the first bevel gear (201) and the second bevel gear (203) at the same time, the bevel gears are mounted on the box body (18), the upper stand pipe (19) is sleeved in the lower stand pipe (21), the rear fork (24) is mounted behind the base frame (1) and connected to the lower stand pipe (21), the upper bearing (231) is mounted between the lower stand pipe (21) and the base frame (1), the bearing retaining ring (22) is mounted on the lower stand pipe (21) and is in close contact with the upper bearing (231), and the lower bearing (232) is mounted between the rear fork (24) and the base frame (1); the adjustment mechanism comprises a mounting bracket (7), a cutting knife (6), an adaptive angle adjustment mechanism and a lateral adjustment mechanism, and the lower end of the mounting bracket (7) is fixedly connected to the base frame (1).

2. A symmetrically adjustable three-wheel tea tree double-sided trimming machine according to claim 1, characterized in that: The steering mechanism makes the rotation direction of the handle (17) consistent with the actual steering direction of the trimmer through the meshing of bevel gears; the upper vertical tube (19) is sleeved in the lower vertical tube (21), and the length of the upper vertical tube (19) sleeved in the lower vertical tube (21) is adjusted by the limiter (20) to achieve the purpose of adjusting the height of the handle (17); the hanging screw at the lower end of the lower vertical tube (21) is adjusted to make the lower vertical tube (21) and the rear fork (24) tightly connected to the bottom frame (1) to achieve the purpose of transferring torque; the bearing retaining ring (22) is threadedly connected to the lower vertical tube (21), and the steering mechanism is installed on the bottom frame (1) by tightening the bearing retaining ring (22).

3. A symmetrically adjustable three-wheel tea tree double-sided trimming machine according to claim 1, characterized in that: The self-adaptive angle adjustment mechanism comprises an upper central bidirectional solenoid (8), an upper left-handed stud (15), and an upper right-handed stud (9); the upper central bidirectional solenoid (8) is connected to the mounting bracket (7) through a circular hole on the mounting bracket (7); a fixing collar (14) is mounted on the upper central bidirectional solenoid (8); and a fixing plate (16) is mounted on the mounting bracket (7); the fixing collar (14) and the fixing plate (16) limit the freedom of the upper central bidirectional solenoid (8) so that it can only perform spiral motion; the threads at both ends of the upper central bidirectional solenoid (8) are respectively left-handed and right-handed. The upper left-handed screw thread and the upper right-handed screw thread are respectively matched with the upper left-handed screw thread (15) and the upper right-handed screw thread (9); when the upper central bidirectional screw tube (8) is rotated, the upper left-handed screw thread (15) and the upper right-handed screw thread (9) simultaneously move outward by a corresponding displacement; in the adaptive adjustment mechanism, the upper left-handed screw thread (15) and the upper right-handed screw thread (9) are hinged to the adaptive connection piece (10), and the other end of the adaptive connection piece (10) is hinged to the upper section of the cutting knife (6), so that after the adjustment of the adaptive adjustment mechanism is completed, the cutting knife (6) can automatically adapt to the adjustment brought about by the lateral adjustment.

4. A symmetrically adjustable three-wheel tea tree double-sided trimming machine according to claim 1, characterized in that: The lateral adjustment mechanism comprises a lower central bidirectional solenoid (11), a lower left-handed stud (13) and a lower right-handed stud (12), which are connected to the mounting bracket (7) through a circular hole on the mounting bracket (7); a fixing collar (14) is installed on the lower central bidirectional solenoid (11), and a fixing plate (16) is installed on the mounting bracket (7); the fixing collar (14) and the fixing plate (16) limit the degree of freedom of the lower central bidirectional solenoid (11) so that it can only perform spiral motion; the threads at both ends of the lower central bidirectional solenoid (11) are left-handed threads and right-handed threads respectively, and are respectively matched with the lower left-handed stud (13) and the lower right-handed stud (12); when the lower central bidirectional solenoid is rotated, the lower left-handed stud (13) and the lower right-handed stud (12) simultaneously move outward by a corresponding displacement; in the lateral adjustment mechanism, the lower left-handed stud (13) and the lower right-handed stud (12) are respectively hinged to the lower section of the cutting knife (6), thereby avoiding interference with the adaptive adjustment mechanism.

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