Self-propelled orchard topdressing punching machine

Abstract

The utility model relates to agricultural machinery, in particular to a self-propelled orchard topdressing punching machine. Comprising a rack, an engine is arranged on the rack, two walking wheels are arranged below the rack, and the two walking wheels are connected through a rotating shaft; the rear end of the rack is connected with a punching device, the punching device is in transmission connection with the engine through a transmission device, and the transmission device comprises a first transmission mechanism, a second transmission mechanism and a third transmission mechanism; the punching device comprises a drill bit and a cam connecting rod mechanism, rotation of a rotating shaft is achieved through a first transmission mechanism, vertical movement of the drill bit is achieved through a second transmission mechanism, and rotation of the drill bit is achieved through a third transmission mechanism. The device is simple in structure, convenient to operate, capable of achieving fixed-distance topdressing and punching, high in working efficiency and particularly suitable for cooperative large orchard areas.

Description

Technical Field

[0001] The utility model relates to agricultural machinery, in particular to a self-propelled orchard topdressing and acupuncture machine. Background Art

[0002] The hole-drilling and fertilizing operation is a very important step in agricultural production before crop planting and transplanting. The existing manual hole-drilling and fertilizing method is to manually drill holes with a hoe at the transplanting site, or use a backpack-type machine to drill holes, and then apply fertilizer to the transplanting holes. The defects of the above-mentioned hole-drilling operation are: first, the labor intensity is high and the operation efficiency is low; (2) the existing hole-drilling operation has uneven hole spacing, which leads to uneven subsequent fertilizer application and low fertilizer utilization rate. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned defects of the prior art and propose a self-propelled orchard topdressing and acupuncture machine, which is easy to operate, can realize fixed-distance topdressing and acupuncture, has high work efficiency, and is particularly suitable for large-scale cooperative orchards.

[0004] The technical solution of the utility model is: a self-propelled orchard topdressing and burring machine, comprising a frame, an engine is provided on the frame, wherein two running wheels are provided below the frame, and the two running wheels are connected by a rotating shaft;

[0005] The rear end of the frame is connected to a punching device, which is connected to the engine through a transmission device. The transmission device includes a first transmission mechanism, a second transmission mechanism and a third transmission mechanism.

[0006] The drilling device includes a drill bit and a cam connecting rod mechanism. The rotation of the rotating shaft is realized by the first transmission mechanism, the up and down movement of the drill bit is realized by the second transmission mechanism, and the rotation of the drill bit is realized by the third transmission mechanism.

[0007] In the utility model, two front guide wheels are symmetrically provided below the front end of the frame, two walking wheels are symmetrically provided below the rear end of the frame, and a handle is provided on the frame;

[0008] A differential is provided on the rotating shaft connecting the two traveling wheels.

[0009] The drill bit is arranged in a drill bit mounting seat, a first rotating box is arranged on the drill bit mounting seat, and an output shaft of the first rotating box is fixedly connected to the drill bit.

[0010] The punching device also includes a fixing seat, which is fixedly connected to the rear end of the frame;

[0011] The top end of the second connecting rod is connected to a crank shaft rotatably arranged in a fixed seat through a crank, the crank shaft is connected to the second transmission mechanism, one end of the crank is fixedly connected to the crank shaft, the other end of the crank is hinged to the second connecting rod, and the bottom end of the second connecting rod is hinged to the third transmission rod;

[0012] The third transmission rod is arranged in a horizontal direction, and the rear end of the third transmission rod is hinged to the drill bit mounting seat.

[0013] The cam connecting rod mechanism and the second connecting rod are respectively arranged on the outer sides of the two symmetrical side surfaces of the fixing seat;

[0014] The cam-link mechanism includes a cam, a first connecting rod, and two transmission rods arranged in the horizontal direction. The cam is rotatably connected to a fixed seat through its camshaft. The outer surface of the cam is in linear contact with a rolling bearing, and the rolling bearing is arranged on the first connecting rod.

[0015] The top end of the first connecting rod is rotatably connected to the fixing seat, and the lower end of the first connecting rod is connected to the drill bit mounting seat through two transmission rods.

[0016] The bottom end of the first connecting rod is connected to a first connecting block, and a second connecting block is fixed to the same side of the drill bit mounting seat. The first connecting block and the second connecting block are connected by two parallel transmission rods, namely a first transmission rod and a second transmission rod located above.

[0017] A parallelogram is formed between the hinge points between the front ends of the two transmission rods and the first connecting block, and between the hinge points between the rear ends of the two transmission rods and the second connecting block, and the first connecting block and the camshaft are connected via a fourth connection;

[0018] The first transmission rod and the third transmission rod are connected via a connecting shaft, and the bottom end of the second connecting rod is connected to the connecting shaft via a connecting plate;

[0019] The front end of the third transmission rod is hinged to the fixed seat through the third connecting rod, the bottom end of the third connecting rod is hinged to the front end of the third transmission rod, and the top end of the third connecting rod is connected to the end of the hinge shaft between the first connecting rod and the fixed seat.

[0020] The first transmission mechanism includes a driving pulley, a driven pulley, a transmission box, a driving sprocket and a driven sprocket;

[0021] The driving pulley is fixedly connected to the output shaft of the engine, the driven pulley is fixedly connected to the input shaft of the transmission box, and the driven pulley and the driving pulley are connected through a belt transmission;

[0022] The driving sprocket is fixedly connected to the output shaft of the transmission box, the driven sprocket is fixed on the rotating shaft, and the driving sprocket and the driven sprocket are connected through a chain transmission.

[0023] The second transmission mechanism includes a first sprocket, a second sprocket and a third sprocket;

[0024] The first sprocket is fixed on the rotating shaft, the second sprocket is coaxial with the camshaft, and the first sprocket and the second sprocket are connected by a chain transmission;

[0025] The third sprocket is coaxial with the crank shaft, and the second sprocket and the third sprocket are connected through a chain transmission.

[0026] The third transmission mechanism includes a first transmission chain group located between the output shaft of the transmission box and the input shaft of the second rotating box. The output shaft of the second rotating box transmits power to the first rotating box through a flexible transmission shaft.

[0027] The beneficial effects of the utility model are:

[0028] (1) The punching machine can be used for both walking and punching, and has complete functions to meet the needs of users;

[0029] (2) During the drilling process, the drilling device enables the drill bit to move up and down in a direction perpendicular to the ground at all times, and ensures that the drill bit is always in a rotating state, so that the rotating drill bit completes the drilling action in the process of periodic up and down movement;

[0030] (3) In this application, the hole punching device can achieve fixed-distance hole punching by controlling the number of teeth on the chain.

[0031] To sum up, the machine described in this application is easy to operate, saves manpower, and can realize fixed-distance topdressing and acupuncture. It is especially suitable for large-scale cooperative orchards, greatly improves work efficiency, meets user needs, and is convenient for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a first structural diagram of the present utility model;

[0033] Figure 2 It is a second structural schematic diagram of the utility model;

[0034] Figure 3 This is a third structural diagram of the present utility model;

[0035] Figure 4 is a structural schematic diagram of the second transmission mechanism;

[0036] Figure 5 It is a structural diagram of the third transmission mechanism.

[0037] In the figure: 1 engine; 2 driving pulley; 3 frame; 4 transmission box; 5 driving sprocket; 6 front guide wheel; 7 transmission chain; 8 heightening box; 9 walking wheel; 10 driven sprocket; 11 rolling bearing; 12 first transmission rod; 13 drill bit; 14 second transmission rod; 15 flexible transmission shaft; 16 fixed seat; 17 first connecting rod; 18 cam; 19 handle; 20 driven pulley; 21 transmission belt; 22 first rotating box; 23 second connecting rod; 24 third transmission rod; 25 third connecting rod; 26 differential; 27 first transmission chain group; 30 crank; 31 fourth connecting rod; 32 first connecting block; 33 coupling; 34 rotating shaft; 35 second connecting block; 36 drill bit mounting seat; 37 connecting plate; 38 connecting shaft; 39 crank shaft; 40 first sprocket; 41 second sprocket; 42 third sprocket; 43 second rotating box. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] The following description sets forth specific details to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art may make similar generalizations without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] like Figures 1 to 3 As shown, the self-propelled orchard topdressing and acupuncture machine described in the present invention includes a frame 3, an engine 1 is provided at the front end of the frame 3, and a punching device is connected to the rear end of the frame 3. Two front guide wheels 6 are symmetrically provided below the front end of the frame 3, and the guide wheels 6 are rotatably connected to the frame 3. A running wheel 9 is provided below the rear end of the frame. In this embodiment, two running wheels 9 are symmetrically provided below the rear end of the frame, and the two running wheels 9 are connected by a rotating shaft 34. The rotating shaft 34 is transmission-connected to the output shaft of the engine 1. Therefore, during the operation of the engine 1, the rotating shaft 34 is driven to rotate, and at the same time, the two running wheels 9 connected to the rotating shaft 34 are driven to rotate, thereby realizing the movement of the acupuncture machine. A differential 25 is provided on the rotating shaft 34. Through the differential 25, the speeds of the two running wheels can be controlled to be inconsistent during movement, thereby realizing the turning function.

[0041] A handle 19 is connected to the upper surface of the rear end of the frame 3. During the movement of the acupuncture machine, the operator holds the handle 19 to control the movement direction of the acupuncture machine.

[0042] In this embodiment, the running wheels 9 are connected to the frame 3 via the heightened box 8 , thereby maintaining the frame 3 in a horizontal state.

[0043] The engine 1 first transmits power to the rotating shaft 34 through the transmission device, and then the torque generated during the rotation of the rotating shaft 34 is transmitted to the punching device through the transmission device, realizing the up and down movement of the punching device and the rotation of the drill bit in the punching device.

[0044] The drilling device includes a fixed base 16 and a drill bit 13. The fixed base 16 is fixed to the frame 3, and the drilling device is mounted on the frame 3 via the fixed base 16. In this embodiment, the drill bit 13 is mounted on a drill bit mounting base 36. The rear end of the cam linkage mechanism is connected to the drill bit mounting base 36. The drill bit mounting base 36 reciprocates up and down with the cam linkage mechanism, driving the drill bit 13 to reciprocate. The drill bit 13 is also fixedly connected to a first rotating box 22, which is rotationally connected to the drill bit mounting base 36. Rotation of the first rotating box 22 drives the drill bit 13 to rotate. The up and down movement of the drill bit 13 and its rotation enable the drilling operation.

[0045] The rear end of the fixed base 16 is connected to the crank 30. One end of the crank 30 is fixedly connected to the crankshaft 39, the other end of the crank 39 is hinged to the top end of the second connecting rod 23, and the bottom end of the second connecting rod 23 is hinged to the third transmission rod 24. The third transmission rod 24 is arranged horizontally, and the rear end of the third transmission rod 24 is connected to the drill bit mounting base 36. The crankshaft 39 is in transmission connection with the transmission device. When the power of the engine 1 is transmitted to the crankshaft 39 through the transmission device, the crankshaft 39 rotates, driving the crank 30 to perform a vertical circular motion, and through the second connecting rod 23, drives the drill bit mounting base 36 and the drill bit 13 to perform periodic up and down motion and back and forth motion.

[0046] During the drilling process, in addition to ensuring the drill bit performs up and down reciprocating motion, it is also necessary to ensure that the drill bit always maintains a vertical orientation during this up and down motion. Therefore, the drilling device also includes a cam-link mechanism. The front end of the cam-link mechanism is connected to the fixed base 16, and the rear end of the cam-link mechanism is connected to the drill bit 13. The rotating shaft transmits power to the cam-link mechanism through a transmission device. In this application, the fixed base 16 is in the shape of an elongated plate, and the cam-link mechanism and the second connecting rod are respectively arranged on the outside of two symmetrical sides of the fixed base 16.

[0047] The cam-connecting rod mechanism comprises a cam 18, a connecting rod, and several parallel transmission rods. Cam 18 is rotationally connected to a fixed base 16 via its central axis. The central axis of cam 18 is connected to a transmission mechanism, which transmits power from engine 1 to cam 18, driving its rotation. One end of the connecting rod is rotationally connected to fixed base 16, while the other end is connected to several parallel transmission rods. Rolling bearings 11 are mounted on the connecting rod, contacting the outer surface of cam 18. The front end of the transmission rod is connected to the connecting rod, while the rear end of the transmission rod is connected to the drill mounting base 36.

[0048] As cam 18 rotates, its contact with rolling bearing 11 causes the bearing's position to change, driving the connecting rod connected to it to oscillate periodically along the hinge point between the connecting rod and the mounting base. This oscillation of the connecting rod propels the several transmission rods connected to it to oscillate periodically up and down. The restraining action of the parallel transmission rods ensures that drill bit mounting base 36 remains horizontal, ensuring that drill bit 13 remains perpendicular to the ground.

[0049] In this embodiment, the cam 18 is pivotally mounted to one side of the front end of the fixed base 16. A first connecting rod 17 is mounted on the same side as the cam. The upper end of the first connecting rod 17 is hinged to the fixed base 16, and the lower end of the first connecting rod 17 is connected to the first connecting block 32. A rolling bearing 11 is mounted on the first connecting rod 17, and there is linear contact between the rolling bearing 11 and the cam 18. Furthermore, a fourth connecting rod 31 is connected between the first connecting block 32 and the camshaft of the cam 18. The upper end of the fourth connecting rod 31 is hinged to the camshaft of the cam, and the lower end of the fourth connecting rod 31 is hinged to the first connecting block 32. The fourth connecting rod 31 stabilizes the swinging motion of the first connecting block 32.

[0050] A second connecting block 35 is fixed to the side of the drill bit mounting seat on the same side as the cam, and the first connecting block 32 and the first connecting block 35 are connected by two transmission rods arranged in the horizontal direction. The two transmission rods include a first transmission rod 12 and a second transmission rod 14. The front ends of the first transmission rod 12 and the second transmission rod 14 are respectively hinged to the first connecting block 32, and the front ends of the first transmission rod 12 and the second transmission rod 14 are respectively hinged to the second connecting block 35, and the hinge points at the connection between the first transmission rod 12 and the second transmission rod 14 and the first connecting block 32, and the hinge points at the connection between the first transmission rod 12 and the second transmission rod 14 and the second connecting block 35 form a parallelogram.

[0051] The first transmission rod 12 and the third transmission rod 24 are connected by a connecting shaft 38, and the bottom end of the second connecting rod 23 is connected to the connecting shaft 38 via a connecting plate 37. The top end of the first connecting rod 17 is connected to the fixed base 16 by a hinge shaft. The other end of the hinge shaft, on the same side as the second connecting rod, is connected to the third connecting rod 25. The top end of the third connecting rod 25 is connected to the hinge shaft, and the bottom end of the third connecting rod 25 is hinged to the front end of the third transmission rod 24.

[0052] Therefore, while the second connecting rod 23 drives the drill bit 13 to perform periodic up and down movement and forward and backward movement through the third transmission rod 24, the cam connecting rod mechanism limits the movement of the third transmission rod 24 and the drill bit 13, so that the drill bit 13 can always perform up and down reciprocating movement in a direction perpendicular to the ground.

[0053] In this embodiment, accurate distance-based punching is achieved by determining the number of teeth on each sprocket.

[0054] The transmission device includes a first transmission mechanism that can realize the movement of the acupuncture machine, a second transmission mechanism that can make the acupuncture mechanism do reciprocating up and down motion, and a third transmission mechanism that can make the drill bit of the acupuncture mechanism rotate continuously.

[0055] The first transmission mechanism includes a driving pulley 2, a driven pulley 20, a transmission case 4, a driving sprocket 5, and a driven sprocket 10. The driving pulley 2 is fixedly connected to the output shaft of the engine 1, and the driven pulley 20 is fixedly connected to the input shaft of the transmission case 4. The driving pulley 2 and the driven pulley 20 are connected by a transmission belt 21. During operation of the engine 1, the output shaft of the engine drives the driving pulley 2 to rotate, and the torque is transmitted to the driven pulley 20 via the transmission belt 21. The rotational power is then transmitted to the transmission case 4 via the driven pulley 20.

[0056] The driving sprocket 5 is fixedly connected to the output shaft of the transmission case 4, and the driven sprocket 10 is fixed to the rotating shaft 34. The driving sprocket 5 and the driven sprocket 10 are connected by a transmission chain 7. Therefore, after the belt transmits power to the transmission case 4, the power is transmitted to the driving sprocket 5 through the output shaft of the transmission case 4. The chain transmission between the driving sprocket 5 and the driven sprocket 10 drives the driven sprocket 10 and the rotating shaft 34 fixedly connected to the driven sprocket 10 to rotate. The rotating shaft 34 drives the two running wheels 9 to rotate, thereby realizing the self-propelled movement of the acupuncture machine.

[0057] The second transmission mechanism includes a first sprocket 40, a second sprocket 41, and a third sprocket 42. The first sprocket 40 is disposed on the rotating shaft 34, the second sprocket 41 is coaxially disposed with the cam, and a chain is used to drive the first sprocket 40 and the second sprocket 41. The third sprocket 42 is coaxially disposed with the crankshaft 39, and a chain is used to drive the second sprocket 41 and the third sprocket 42.

[0058] During the rotation of the rotating shaft 34, the first sprocket 40 is driven to rotate, which in turn drives the second sprocket 41 through the chain. The second sprocket 41 drives the third sprocket 42 through the chain. Since the third sprocket 42 is coaxial with the crankshaft 39, it drives the crankshaft 39 to rotate. During the rotation of the crankshaft 39, the second connecting rod 23 and the third transmission rod 24 drive the drill bit to achieve periodic up and down motion and back and forth motion.

[0059] When the second sprocket 41 rotates, since it is coaxial with the cam 18, the second sprocket 41 drives the coaxial cam 18 to rotate during the rotation of the cam 18. During the rotation of the cam 18, the cam connecting rod mechanism is actuated to limit the third transmission rod 24 and the drill bit 13.

[0060] In this embodiment, a coupling 33 is provided at the connecting shaft between the first sprocket 40 and the rotating shaft 34. When the coupling 33 is in a meshing state, the first sprocket 40 is fixedly connected to the rotating shaft 34. At this time, the torque generated during the rotation of the rotating shaft 34 can be transmitted to the drill bit 13 through the first sprocket 40, thereby achieving the drilling action of the drill bit 13. In this case, the acupuncture machine can achieve synchronous mechanical drilling and mechanical travel. When the coupling 33 is in a disengaged state, the first sprocket 40 is separated from the rotating shaft 34. The rotation of the rotating shaft 34 does not drive the first sprocket 40 to rotate. At this time, the acupuncture machine can only travel and does not perform a drilling operation.

[0061] The third transmission mechanism includes a first transmission chain assembly 27 located between the input shaft of the transmission box 4 and the input shaft of the second rotating box 43. The output shaft of the second rotating box 43 is connected to the input box shaft of the first rotating box 22 via a flexible transmission shaft 15. The output shaft of the first rotating box 22 is connected to the drill bit 13.

[0062] As the input shaft of the transmission box 4 rotates, power is transmitted to the second rotating box 32 via the first transmission chain assembly 27. The second rotating box 32 then redirects the power and transmits it to the first rotating box 22 via the flexible transmission shaft 15, thereby driving the drill bit 13 to rotate. The drill bit rotates simultaneously during its reciprocating up and down motion, completing the drilling operation.

[0063] The operating process of the acupuncture machine is as follows. When the acupuncture machine only needs to travel and not perform drilling operations, the coupling 31 is disengaged. At this time, the engine 1 is operating, and the power output of the engine 1 is transmitted to the rotating shaft 34 through the first transmission mechanism. As the rotating shaft 34 rotates, it drives the running wheels 9 at both ends, thereby enabling the acupuncture machine to travel. The operator only needs to hold the handle 19 to control the movement direction of the acupuncture machine.

[0064] When the drilling machine needs to move and drill holes at the same time, the coupling 31 is in a meshing state. The power output by the engine 1 is transmitted to the rotating shaft 34 through the first transmission mechanism, which drives the running wheel to rotate. At the same time, the rotating shaft 34 transmits power to the drill bit 13 through the second transmission mechanism, driving the drill bit 13 to perform periodic up and down motion and back and forth motion. At the same time, the cam connecting rod mechanism is activated, and the wheel connecting rod mechanism limits the movement of the drill bit 13, so that the drill bit 13 can always maintain a horizontal state during the movement, thereby allowing the drill bit 13 to always reciprocate in a direction perpendicular to the ground. At the same time, the power output by the engine 1 is transmitted to the drill bit 13 through the third transmission mechanism, realizing the continuous rotation of the drill bit 13. The downward movement of the drill bit and the continuous rotation of the drill bit realize the drilling operation.

[0065] The self-propelled orchard topdressing and acupuncture machine provided by the present invention is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-propelled orchard topdressing and acupuncture machine, comprising a frame with an engine mounted thereon, characterized in that: Two running wheels are provided below the frame and are connected by a rotating shaft; The rear end of the frame is connected to a punching device, which is connected to the engine through a transmission device. The transmission device includes a first transmission mechanism, a second transmission mechanism and a third transmission mechanism. The drilling device includes a drill bit and a cam connecting rod mechanism. The rotation of the rotating shaft is realized by the first transmission mechanism, the up and down movement of the drill bit is realized by the second transmission mechanism, and the rotation of the drill bit is realized by the third transmission mechanism.

2. The self-propelled orchard topdressing and acupuncture machine according to claim 1, characterized in that: Two front guide wheels are symmetrically provided below the front end of the frame, two walking wheels are symmetrically provided below the rear end of the frame, and a handle is provided on the frame; A differential is provided on the rotating shaft connecting the two traveling wheels.

3. The self-propelled orchard topdressing and acupuncture machine according to claim 1, characterized in that: The drill bit is arranged in a drill bit mounting seat, a first rotating box is arranged on the drill bit mounting seat, and an output shaft of the first rotating box is fixedly connected to the drill bit.

4. The self-propelled orchard topdressing and burrowing machine according to claim 3, characterized in that: The punching device also includes a fixing seat, which is fixedly connected to the rear end of the frame; The top end of the second connecting rod is connected to a crank shaft rotatably arranged in a fixed seat through a crank, the crank shaft is connected to the second transmission mechanism, one end of the crank is fixedly connected to the crank shaft, the other end of the crank is hinged to the second connecting rod, and the bottom end of the second connecting rod is hinged to the third transmission rod; The third transmission rod is arranged in a horizontal direction, and the rear end of the third transmission rod is hinged to the drill bit mounting seat.

5. The self-propelled orchard topdressing and burrowing machine according to claim 4, characterized in that: The cam connecting rod mechanism and the second connecting rod are respectively arranged on the outer sides of the two symmetrical side surfaces of the fixing seat; The cam-link mechanism includes a cam, a first connecting rod, and two transmission rods arranged in the horizontal direction. The cam is rotatably connected to a fixed seat through its camshaft. The outer surface of the cam is in linear contact with a rolling bearing, and the rolling bearing is arranged on the first connecting rod. The top end of the first connecting rod is rotatably connected to the fixing seat, and the lower end of the first connecting rod is connected to the drill bit mounting seat through two transmission rods.

6. The self-propelled orchard topdressing and burrowing machine according to claim 5, characterized in that: The bottom end of the first connecting rod is connected to a first connecting block, and a second connecting block is fixed to the same side of the drill bit mounting seat. The first connecting block and the second connecting block are connected by two parallel transmission rods, namely a first transmission rod and a second transmission rod located above. A parallelogram is formed between the hinge points between the front ends of the two transmission rods and the first connecting block, and between the hinge points between the rear ends of the two transmission rods and the second connecting block, and the first connecting block and the camshaft are connected via a fourth connection; The first transmission rod and the third transmission rod are connected via a connecting shaft, and the bottom end of the second connecting rod is connected to the connecting shaft via a connecting plate; The front end of the third transmission rod is hinged to the fixed seat through the third connecting rod, the bottom end of the third connecting rod is hinged to the front end of the third transmission rod, and the top end of the third connecting rod is connected to the end of the hinge shaft between the first connecting rod and the fixed seat.

7. The self-propelled orchard topdressing and acupuncture machine according to claim 3, characterized in that: The first transmission mechanism includes a driving pulley, a driven pulley, a transmission box, a driving sprocket and a driven sprocket; The driving pulley is fixedly connected to the output shaft of the engine, the driven pulley is fixedly connected to the input shaft of the transmission box, and the driven pulley and the driving pulley are connected through a belt transmission; The driving sprocket is fixedly connected to the output shaft of the transmission box, the driven sprocket is fixed on the rotating shaft, and the driving sprocket and the driven sprocket are connected through a chain transmission.

8. The self-propelled orchard topdressing and acupuncture machine according to claim 5, characterized in that: The second transmission mechanism includes a first sprocket, a second sprocket and a third sprocket; The first sprocket is fixed on the rotating shaft, the second sprocket is coaxial with the camshaft, and the first sprocket and the second sprocket are connected by a chain transmission; The third sprocket is coaxial with the crank shaft, and the second sprocket and the third sprocket are connected through a chain transmission.

9. The self-propelled orchard topdressing and acupuncture machine according to claim 7, characterized in that: The third transmission mechanism includes a first transmission chain group located between the output shaft of the transmission box and the input shaft of the second rotating box. The output shaft of the second rotating box transmits power to the input shaft of the first rotating box through a flexible transmission shaft.

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