Laser weeding equipment for Chinese herbal medicine planting area

Abstract

The invention discloses laser weeding equipment for a Chinese herbal medicine planting area, and relates to the technical field of laser weeding, the laser weeding equipment comprises a weeding machine body, the front part of the weeding machine body is provided with a rotary sweeping mechanism for reducing weed accumulation, and the front part of the rotary sweeping mechanism is also provided with a shifting mechanism for pushing weeds to two sides; a collecting mechanism for preventing weeds from falling off is arranged on the rear portion of the rotary sweeping mechanism, a blowing mechanism for blowing fallen leaves away is arranged at the bottom of the stirring mechanism, the rotary sweeping mechanism comprises mounting frames symmetrically and fixedly connected to the front portion of the weeding machine body, a rotating shaft is rotationally connected between the two mounting frames, and a cylinder is fixedly connected to the outer portion of the rotating shaft; a plurality of shifting teeth are fixedly connected to the outer portion of the cylinder, the rotary sweeping mechanism is arranged, the rotary shifting teeth are used for rolling up loose covering objects and shallow-root weeds on the earth surface and upwards taking the loose covering objects and the shallow-root weeds away from the ground, dead leaves, broken branches and topsoil attached to the ground are removed, the stem bases of the shielded weeds are exposed, and it is ensured that laser energy can directly reach meristem.

Description

Technical Field

[0001] This invention relates to the field of laser weeding technology, specifically to a laser weeding device for medicinal herb planting areas. Background Technology

[0002] The cultivation of Chinese medicinal herbs has demanding requirements for its growing environment, and most varieties are extremely sensitive to chemical pesticides. Traditional chemical weeding not only easily leads to pesticide residues, affecting the quality of the herbs, but may also damage the soil's microecological environment. Therefore, laser weeding technology, as a physical, precise, and zero-contact green weeding solution, has enormous application potential in the field of Chinese medicinal herb cultivation.

[0003] However, in actual medicinal herb cultivation environments (especially perennial herbs or understory planting), the growth cycle of medicinal herbs is often accompanied by a large amount of crop residues, fallen leaves, withered branches, and loose soil. These withered branches and fallen leaves scattered on top of weeds form a natural shielding layer. Because lasers have strong linearity, once the target weeds are covered by fallen materials, the energy of the laser beam will be absorbed or reflected by the shielding material, failing to act on the meristematic tissue of the weeds, resulting in poor weed control.

[0004] Therefore, this invention proposes a laser weeding device for medicinal herb planting areas to compensate for and improve the shortcomings of existing technologies. Summary of the Invention

[0005] In view of the above problems, the present invention provides a laser weeding device for medicinal herb planting areas, which can effectively solve the problem in the prior art where the target weeds are covered by dead matter, and the energy of the laser beam is absorbed or reflected by the obstruction, thus failing to act on the meristematic tissue of the weeds. To achieve the above objective, the embodiments of this application provide the following technical solutions:

[0006] This invention discloses a laser weeding device for Chinese herbal medicine planting areas, including a weeding machine body. The front of the weeding machine body is provided with a rotating sweeping mechanism for reducing weed accumulation. The front of the rotating sweeping mechanism is also provided with a pushing mechanism to push the weeds to both sides. The rear of the rotating sweeping mechanism is provided with a collection mechanism to prevent weeds from falling. The bottom of the pushing mechanism is provided with an air blowing mechanism to blow away fallen leaves.

[0007] The rotary sweeping mechanism includes mounting brackets symmetrically fixedly connected to the front of the weeder body, a rotating shaft rotatably connected between the two mounting brackets, a cylinder fixedly connected to the outside of the rotating shaft, and multiple teeth fixedly connected to the outside of the cylinder.

[0008] Furthermore, a motor is fixedly connected to the side of the mounting bracket, and the output end of the motor is fixedly connected to one end of the rotating shaft.

[0009] Furthermore, multiple teeth are fixedly connected to the cylindrical surface at equal angles, and the lateral spacing of each tooth is consistent.

[0010] Furthermore, the agitation mechanism includes rotating shafts symmetrically rotatably connected to the front of the mounting frame 201. A rotating plate is fixedly connected to the bottom of each rotating shaft. A mounting groove is provided at the bottom of the rotating plate. A round rod is fixedly connected inside the mounting groove. Multiple levers for agitating weeds are rotatably connected to the outside of the round rod.

[0011] Furthermore, the round rod is fixedly connected in a direction close to the side of the mounting groove, and the side of the mounting groove prevents the lever from rotating to the other side of the mounting groove.

[0012] Furthermore, the actuating mechanism also includes a disc fixedly connected to the end of the rotating shaft away from the motor. A rotating rod is fixedly connected to the side of the disc away from the rotating shaft. A first connecting rod is rotatably connected to the outside of the rotating rod. A second connecting rod is hinged to the end of the first connecting rod away from the rotating rod. The end of the second connecting rod away from the first connecting rod is fixedly connected to the top of the rotating shaft.

[0013] Furthermore, the disk is concentrically connected to the rotating shaft, and the disk is eccentrically connected to the rotating rod.

[0014] Furthermore, both of the rotating shafts are fixedly connected to external transmission gears, one of which meshes with an L-shaped rack, and the other transmission gear meshes with a transmission rack. The transmission rack and the L-shaped rack are fixedly connected to each other by a transmission rod.

[0015] Furthermore, the collection mechanism includes a collection box fixedly connected between two mounting brackets for collecting weeds picked up by the pick teeth. The top of the collection box is fixedly connected to a top cover, the front of the collection box has a vertical groove for the pick teeth to pass through, and the bottom of the collection box also has a horizontal groove.

[0016] Furthermore, the air blowing mechanism includes a hollow plate fixedly connected to the bottom of the transmission rod. The bottom of the hollow plate has multiple air jets, which are inclined towards both sides of the weeder body. An air delivery hose is fixedly connected to the side of the hollow plate. An air pump is fixedly connected to the end of the hose away from the hollow plate, and the air pump is fixedly connected to the side of the mounting bracket. A pressure plate is fixedly connected to the top of the piston rod of the air pump. A return spring is also sleeved on the outside of the piston rod of the air pump. A cam is also fixedly connected to the outside of the rotating shaft, and the cam is in rolling connection with the pressure plate.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This device is equipped with a rotating sweeping mechanism that uses rotating teeth to roll up loose mulch and shallow-rooted weeds from the ground and lift them upwards, removing dead leaves, broken branches and loose soil, exposing the base of the covered weed stems, and ensuring that laser energy can reach the meristematic tissue directly.

[0019] 2. This device is equipped with a toggle mechanism that drives a rotating plate to swing back and forth through an eccentric connecting rod and a gear rack. Multiple freely rotating levers installed at the bottom of the rotating plate can push away the accumulated dead leaves, stubble, and weeds in front of the weeding equipment to both sides, preventing debris from accumulating in front of the equipment and avoiding increased resistance or interruption of operation due to blockage. This creates a clear path for subsequent laser irradiation and improves weeding efficiency. At the same time, the levers are eccentrically installed and limited by the mounting groove, so that they can automatically rotate to avoid obstacles when they come into contact with them, which ensures toggle efficiency and avoids mechanical damage to low-growing or fragile Chinese herbal plants.

[0020] 3. This device is equipped with an air blowing mechanism. The cam integrated on the rotating shaft drives the piston air pump, which causes multiple air jets at the bottom of the hollow plate to periodically spray high-pressure airflow. This blows fine fallen leaves, dust and light residue to both sides of the equipment, removing tiny obstructions that are difficult for the rotating sweeping mechanism to handle, and further purifying the laser irradiation area. At the same time, the air jets are arranged at an angle to both sides to form a lateral diffusion airflow, which not only enhances the cleaning range, but also prevents debris from falling back into the cleaned area.

[0021] 4. This device is equipped with a collection mechanism. The vertical groove at the front of the collection box allows the grating teeth to pass through, and the horizontal groove at the bottom facilitates the temporary storage of debris. It promptly collects the dead branches, leaves and weeds brought up by the grating teeth, preventing them from scattering back onto the ground behind the equipment and avoiding secondary obstruction that affects the laser weeding effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram from a first perspective of the present invention.

[0024] Figure 2 This is a two-dimensional structural diagram of the present invention from a second perspective.

[0025] Figure 3 This is a three-dimensional structural diagram of the rotary sweeping mechanism in this invention.

[0026] Figure 4This is a three-dimensional structural diagram of the actuating mechanism and the collecting mechanism in this invention.

[0027] Figure 5 In this invention Figure 4 Enlarged view of the structure at point A in the middle.

[0028] Figure 6 This is a longitudinal cross-sectional view of the rotating plate in this invention.

[0029] Figure 7 This is a longitudinal cross-sectional view of the air blowing mechanism in this invention.

[0030] The labels in the diagram represent: 10, weeder body; 20, rotary sweeping mechanism; 201, mounting bracket; 202, rotating shaft; 203, prying teeth; 204, motor; 205, cylinder; 30, actuating mechanism; 301, rotating plate; 302, mounting slot; 303, lever; 304, round rod; 305, rotating shaft; 306, first connecting rod; 307, second connecting rod; 308, disc; 30 9. Rotating rod; 310. Transmission gear; 311. Transmission rod; 312. Transmission rack; 313. L-shaped rack; 40. Collection mechanism; 401. Collection box; 402. Top cover; 403. Vertical groove; 404. Horizontal groove; 50. Air blowing mechanism; 501. Hollow plate; 502. Air nozzle; 503. Hose; 504. Air pump; 505. Extrusion plate; 506. Return spring; 507. Cam. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to embodiments.

[0033] See Figures 1 to 7 This embodiment of a laser weeding device for a Chinese herbal medicine planting area includes a weeding machine body 10. The front of the weeding machine body 10 is provided with a rotating sweeping mechanism 20 for reducing weed accumulation. The front of the rotating sweeping mechanism 20 is also provided with a pushing mechanism 30 for pushing weeds to both sides. The rear of the rotating sweeping mechanism 20 is provided with a collecting mechanism 40 to prevent weeds from falling. The bottom of the pushing mechanism 30 is provided with an air blowing mechanism 50 for blowing away fallen leaves. The laser emitter of the weeding machine body 10 is usually a CO2 or fiber laser.

[0034] See Figure 1, Figure 2 and Figure 3 The rotating sweeping mechanism 20 includes mounting brackets 201 symmetrically fixedly connected to the front of the weeder body 10. A rotating shaft 202 is rotatably connected between the two mounting brackets 201. A cylinder 205 is fixedly connected to the outside of the rotating shaft 202. Multiple teeth 203 are fixedly connected to the outside of the cylinder 205.

[0035] A motor 204 is also fixedly connected to the side of the mounting bracket 201, and the output end of the motor 204 is fixedly connected to one end of the rotating shaft 202.

[0036] Multiple teeth 203 are fixedly connected to the surface of the cylinder 205 at equal angles, and the lateral spacing of each tooth 203 is consistent.

[0037] In actual operation, the operator starts the weeding machine body 10, and the motor 204 installed on the side of the mounting frame 201 is powered on. The output shaft of the motor 204 drives the rotating shaft 202 to rotate at high speed. The rotating shaft 202 synchronously drives the cylinder 205 and multiple teeth 203 on the surface of the cylinder 205 to start rotating. As the equipment moves forward, the area that has been initially diverted by the diversion mechanism 30 enters the working range of the rotating sweeping mechanism 20. The high-speed rotating cylinder 205 drives the teeth 203 distributed at equal angles to continuously sweep the ground surface. The teeth 203 roll up the dead branches, fallen leaves, loose soil and shallow-rooted weeds that are lying on the ground and lift them off the ground, forming a brief suspended or lifted state. Because the lateral spacing of the teeth 203 is consistent, the sweeping coverage is uniform and there are no blind spots. The base of the weed stems and meristematic tissues are exposed from the covering, creating a direct path for laser irradiation.

[0038] See Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The agitation mechanism 30 includes a rotating shaft 305 symmetrically rotatably connected to the front of the mounting frame 201. A rotating plate 301 is fixedly connected to the bottom of each rotating shaft 305. A mounting groove 302 is provided at the bottom of the rotating plate 301. A round rod 304 is fixedly connected inside the mounting groove 302. A plurality of levers 303 for agitating weeds are rotatably connected to the outside of the round rod 304.

[0039] The round rod 304 is fixedly connected to the side of the mounting groove 302, and the side blocking lever 303 of the mounting groove 302 rotates to the other side of the mounting groove 302.

[0040] The actuating mechanism 30 further includes a disk 308 fixedly connected to the end of the rotating shaft 202 away from the motor 204. A rotating rod 309 is fixedly connected to the side of the disk 308 away from the rotating shaft 202. A first connecting rod 306 is rotatably connected to the outside of the rotating rod 309. A second connecting rod 307 is hinged to the end of the first connecting rod 306 away from the rotating rod 309. The end of the second connecting rod 307 away from the first connecting rod 306 is fixedly connected to the top of the rotating shaft 305.

[0041] The disk 308 is concentrically connected to the rotating shaft 202, and the disk 308 is eccentrically connected to the rotating rod 309.

[0042] Both rotating shafts 305 are externally fixedly connected to transmission gears 310. One transmission gear 310 meshes with an L-shaped rack 313, and the other transmission gear 310 meshes with a transmission rack 312. The transmission rack 312 and the L-shaped rack 313 are fixedly connected to each other by a transmission rod 311. The L-shaped rack 313 and the transmission rack 312 are respectively meshed with their corresponding transmission gears 310. The L-shaped rack 313 meshes with the front part of the gear, and the transmission rack 312 meshes with the rear part of the gear. Thus, when the transmission rod 311 makes a linear reciprocating motion, it drives the two gears to rotate in opposite directions.

[0043] In actual operation, the disk 308 fixed at the other end of the rotating shaft 202 rotates synchronously with the rotating shaft 202. The rotating rod 309 eccentrically mounted on the disk 308 rotates with the disk 308, driving the first connecting rod 306 to reciprocate. The first connecting rod 306 drives the second connecting rod 307 through the hinge point, transmitting the motion to the top of the rotating shafts 305 on both sides, causing the rotating shafts 305 to rotate periodically. The rotating shafts 305 drive the rotating plate 301 at the bottom to swing left and right. At the same time, since the transmission gears 310 on the two rotating shafts 305 respectively connect to the L-shaped rack 313 and the transmission rack 314, the rotation is also affected. 12 meshes, and the two racks are rigidly connected by the transmission rod 311, so the rotating plates 301 on both sides swing synchronously in opposite directions. During the swing, the multiple levers 303 in the mounting groove 302 at the bottom of the rotating plate 301 contact the dead leaves, stubble and weeds piled up in front of the ground. The levers 303 rotate freely around the eccentric round rod 304 and can automatically rotate back to avoid obstacles. The side wall of the mounting groove 302 restricts the levers 303 to rotate only to the outside of the equipment, thereby stably pushing the debris to the left and right sides, avoiding accumulation in front, and forming a channel with a width greater than the laser irradiation area in front of the weeding equipment's travel path.

[0044] See Figure 1 , Figure 2 and Figure 4The collection mechanism 40 includes a collection box 401 fixedly connected between two mounting brackets 201 for collecting weeds picked up by the pick teeth 203. A top cover 402 is fixedly connected to the top of the collection box 401. A vertical groove 403 for the pick teeth 203 to pass through is opened at the front of the collection box 401. A horizontal groove 404 is also opened at the bottom of the collection box 401.

[0045] During operation, the debris picked up by the pick teeth 203 is thrown backward and upward under the action of centrifugal force and gravity. The vertical groove 403 at the front of the collection box 401 is aligned with the movement trajectory of the pick teeth 203, allowing the pick teeth 203 to pass through without interference. After the debris enters the collection box 401, it cannot be scattered due to the obstruction of the top cover 402 and eventually falls to the bottom of the box. The pick teeth 203 pass through the horizontal groove 404 at the bottom of the collection box 401, using the collection box 401 to prevent the cleared debris from falling back naturally behind the equipment and covering the ground again, causing secondary obstruction.

[0046] See Figure 1 , Figure 2 and Figure 7 The air blowing mechanism 50 includes a hollow plate 501 fixedly connected to the bottom of the transmission rod 311. The bottom of the hollow plate 501 has multiple air jets 502, and the air jets 502 are inclined to both sides of the weeder body 10. An air delivery hose 503 is fixedly connected to the side of the hollow plate 501. An air pump 504 is fixedly connected to the end of the hose 503 away from the hollow plate 501. The air pump 504 is fixedly connected to the side of the mounting bracket 201. A compression plate 505 is fixedly connected to the top of the piston rod of the air pump 504. A return spring 506 is also sleeved on the outside of the piston rod of the air pump 504. A cam 507 is also fixedly connected to the outside of the rotating shaft 202. The cam 507 is in rolling connection with the compression plate 505.

[0047] In actual operation, each time the cam 507 on the rotating shaft 202 rotates, the protruding part of the cam 507 periodically presses down on the squeezing plate 505 on the top of the air pump 504. The squeezing plate 505 pushes the piston rod of the air pump 504 to compress the air pump 504 cavity. At the same time, the return spring 506 stores energy. After the cam 507 rotates past the highest point, the return spring 506 releases the energy, the piston returns to its original position, and the air pump 504 completes one suction and pressure cycle. The compressed air is sent through the air delivery hose 503 into the hollow plate 501 fixed at the bottom of the transmission rod 311. The air is ejected at high speed from multiple jet nozzles 502 at the bottom of the hollow plate 501 that are inclined to both sides of the weeding equipment, forming a transverse diffusion airflow. The airflow blows away the fine debris, dust, dry leaf fragments and other micron-sized obstructions that the pick teeth 203 could not completely remove, ensuring that the laser energy reaches the weed target without attenuation.

[0048] Working principle:

[0049] When the weeder body 10 moves forward, it first achieves synchronous reverse swinging through the rotating plates 301 on both sides of the actuating mechanism 30. During the swinging process, multiple levers 303 in the mounting grooves 302 at the bottom of the rotating plates 301 contact the dead leaves, stubble, and weeds accumulated on the ground in front of it, clearing a channel for the rotary sweeping mechanism 20 that is wider than the laser irradiation area. Then, the high-speed rotating cylinder 205 of the rotary sweeping mechanism 20 drives the equally angled teeth 203 to continuously sweep the ground surface. The teeth 203 pick up the dead branches, fallen leaves, loose soil, and shallow-rooted weeds that are close to the ground and lift them off the ground. Then, the collection mechanism 40 prevents the removed debris from falling back naturally behind the equipment and covering the ground again, causing secondary obstruction. Finally, compressed air is sent through the air blowing mechanism 50 to the hollow plate 501 fixed at the bottom of the transmission rod 311 via the air delivery hose 503. The air is ejected at high speed from multiple air jets 502 at the bottom of the hollow plate 501 that are inclined to both sides of the weeding equipment, forming a transverse diffusion airflow. The airflow blows away the fine debris, dust, dry leaf fragments and other micron-sized obstructions that the pick teeth 203 failed to completely remove, ensuring that the laser energy reaches the weed target without attenuation.

[0050] After the above four-stage obstacle removal is completed, the laser emitter located behind the rotating sweeping mechanism 20 is usually a CO2 or fiber laser. The laser beam is focused on the exposed weed stem tips or meristematic areas. The high-energy laser instantly heats the water in the plant cells, causing the cells to burst and the proteins to denature, thus achieving physical inactivation. As the weeding machine body 10 moves forward at a constant speed, the above process is continuously, synchronously, and cyclically executed at each working section.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Chinese herbal medicine planting area laser weeding device, characterized by, The utility model provides a weeding machine, including the weeding machine body (10), the weeding machine body (10) front is provided with the rotary sweeping mechanism (20) for reducing the accumulation of weeds, the rotary sweeping mechanism (20) front is also provided with the poking mechanism (30) of pushing weeds to both sides, the rotary sweeping mechanism (20) rear is provided with the collection mechanism (40) of avoiding weeds to drop, the poking mechanism (30) bottom is provided with the blowing mechanism (50) of blowing fallen leaves away, The rotary sweeping mechanism (20) comprises mounting racks (201) symmetrically fixed to the front of the weeding machine body (10), a rotating shaft (202) rotatably connected between the two mounting racks (201), a cylinder (205) fixed to the outside of the rotating shaft (202), and a plurality of poking teeth (203) fixed to the surface of the cylinder (205).

2. The laser weeding device for Chinese herbal medicine planting area according to claim 1, characterized in that, The mounting rack (201) is further provided with a motor (204) fixed to the side surface thereof, and the output end of the motor (204) is fixed to one end of the rotating shaft (202).

3. The laser weeding device for Chinese herbal medicine planting area according to claim 1, characterized in that, The plurality of poking teeth (203) are fixed to the surface of the cylinder (205) at equal angles, and the lateral spacing of each poking tooth (203) is consistent.

4. The laser weeding device for Chinese herbal medicine planting area according to claim 1, characterized in that, The poking mechanism (30) comprises rotating shafts (305) symmetrically rotatably connected to the front of the mounting rack (201), rotating plates (301) fixed to the bottom of each rotating shaft (305), mounting grooves (302) formed in the bottom of each rotating plate (301), circular rods (304) fixed to the inside of each mounting groove (302), and a plurality of poking rods (303) rotatably connected to the outside of each circular rod (304) for poking weeds.

5. The laser weeding device for Chinese herbal medicine planting area according to claim 4, characterized in that, The circular rod (304) is fixed to the side of the mounting groove (302) in a direction away from the other side of the mounting groove (302), and the side of the mounting groove (302) blocks the rotation of the poking rod (303) to the other side of the mounting groove (302).

6. The laser weeding device for Chinese herbal medicine planting area according to claim 4, characterized in that, The poking mechanism (30) further comprises a disc (308) fixed to the end of the rotating shaft (202) away from the motor (204), a rotating rod (309) fixed to the side of the disc (308) away from the rotating shaft (202), a first connecting rod (306) rotatably connected to the outside of the rotating rod (309), a second connecting rod (307) hingedly connected to the end of the first connecting rod (306) away from the rotating rod (309), and the top of the second connecting rod (307) away from the first connecting rod (306) is fixed to the rotating shaft (305).

7. The laser weeding device for Chinese herbal medicine planting area according to claim 6, characterized in that, The disc (308) is concentrically connected to the rotating shaft (202), and the disc (308) and the rotating rod (309) are eccentrically connected.

8. The laser weeding device for Chinese herbal medicine planting area according to claim 6, characterized in that, Both the rotating shafts (305) are fixedly provided with transmission gears (310) on the outside thereof, one of the transmission gears (310) is engaged with an L-shaped rack (313), the other transmission gear (310) is engaged with a transmission rack (312), and the transmission rack (312) and the L-shaped rack (313) are fixedly connected to each other through a transmission rod (311).

9. The laser weeding device for Chinese herbal medicine planting area according to claim 1, characterized in that, The collecting mechanism (40) includes a collecting box (401) for collecting the grass brought by the raking teeth (203) fixedly connected between the two mounting frames (201), a top cover (402) is fixedly connected to the top of the collecting box (401), a vertical slot (403) for the raking teeth (203) to pass through is formed in the front of the collecting box (401), and a horizontal slot (404) is also formed in the bottom of the collecting box (401).

10. The laser weeding device for Chinese herbal medicine planting area according to claim 8, characterized in that, The blowing mechanism (50) includes a hollow plate (501) fixedly connected to the bottom of the transmission rod (311), a plurality of air injection ports (502) are formed in the bottom of the hollow plate (501), the air injection ports (502) are inclined to the two sides of the weeding machine body (10), a gas conveying hose (503) is fixedly connected to the side of the hollow plate (501), one end of the gas conveying hose (503) away from the hollow plate (501) is fixedly connected to a gas pump (504), the gas pump (504) is fixedly connected to the side of the mounting frame (201), a pressing plate (505) is fixedly connected to the top of the piston rod of the gas pump (504), a reset spring (506) is further sleeved on the outside of the piston rod of the gas pump (504), a cam (507) is further fixedly connected to the outside of the rotating shaft (202), and the cam (507) is rollingly connected to the pressing plate (505).

Images