Weeding device for agricultural crop planting

Abstract

The invention relates to the field of agricultural equipment, in particular to a weeding device for agricultural crop planting, and solves the problems that although a hard blade has a good mowing effect, the use environment is required, and if the hard blade encounters a hard stone, the hard blade is in hard contact with the stone, so that the blade is damaged. The device comprises a fixing frame, a driving motor is arranged on the fixing frame, the driving motor is connected with a rotating disc, a cutter is arranged on the rotating disc, the driving motor is arranged in a sliding mode relative to the fixing frame in the vertical direction and provided with an elastic limiting piece, the driving motor is fixedly connected with a connecting arm, the connecting arm is fixedly connected with a lifting frame, and the lifting frame is located below the rotating disc. The lifting frame comprises a plurality of guide strips arranged in the left-right direction, the guide strips are arranged in the front-back direction, each guide strip comprises an inclined section at the front part and a horizontal section at the rear part, and the inclined sections incline downwards from front to back; stone does not make contact with the cutter, hard contact between the cutter and the stone is avoided, and therefore the mowing effect can be guaranteed, and the cutter can be prevented from being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural equipment, and in particular to a weeding device for planting agricultural crops. Background Art

[0002] During the agricultural planting process, weeds compete with crops for soil moisture and nutrients, occupy farmland space, and affect the growth of crops, which not only reduces the yield and quality of crops, but also indirectly contributes to the breeding and spread of pests and diseases. Generally, weeds need to be cleared regularly to ensure the growth quality of crops. The most traditional weeding method is generally done manually with a sickle, which is labor-intensive and inefficient. With the popularization of agricultural machinery and equipment, it is currently mostly done with automatic or semi-automatic weeding equipment.

[0003] The weeding equipment includes a weeding device arranged in the front. There are various weeding devices, which can be roughly divided into flexible rope bodies or hard blades. Among them, the flexible rope body made of special materials can rotate quickly when started, and is affected by air resistance, presenting an arc state, similar to a scimitar, so as to achieve the cleaning of weeds, and due to its flexible structure, when encountering hard stones, it can also pass smoothly from the surface of the stone. However, also due to its flexible structure, compared with the blade, it has a shorter lifespan and needs to be replaced frequently. The mowing effect is slightly worse than that of the blade, the mowing effect is limited, and the rope body is prone to mold when it is damp, thereby increasing the frequency and cost of maintenance.

[0004] Although hard blades have good mowing effects, they have certain requirements for the use environment. For example, when encountering hard stones, the hard blades will come into hard contact with the stones, thereby damaging the blades. Or, from the perspective of human observation, before passing by the stones, the walking direction will be changed to bypass the stones. This operation is more troublesome and may lead to situations where observation is not in place.

[0005] Therefore, the present invention provides an agricultural crop planting weeding device capable of preventing blade damage to solve the above-mentioned problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a weeding device for agricultural crop planting to solve the problem that although the above-mentioned hard blade has a good mowing effect, it has certain requirements on the use environment. For example, when encountering hard stones, the hard blade will come into hard contact with the stone, thereby damaging the blade.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A weeding device for planting agricultural crops, comprising a fixed frame, a driving motor is arranged on the fixed frame, the driving motor is connected to a rotating disk, a cutting knife is arranged on the rotating disk, the driving motor is slidably arranged in a vertical direction relative to the fixed frame, and an elastic limiter is arranged, the driving motor is fixedly connected to a connecting arm, the connecting arm is fixedly connected to a lifting frame, the lifting frame is located below the rotating disk, the lifting frame comprises a plurality of guide bars arranged in a left-right direction, the guide bars are arranged in a front-back direction, the guide bars comprise an inclined section of a front part and a horizontal section of a rear part, and the inclined section is inclined downward from front to back;

[0009] During operation, weeds pass through the lifting frame and are cut by the cutter. When encountering stones, the stones lift the lifting frame, and the lifting frame drives the driving motor, the turntable and the cutter to rise together, so that the stones pass through the bottom of the lifting frame.

[0010] Preferably, the fixing frame is a frame, a mounting frame is provided on the fixing frame, the mounting frame is U-shaped, and both ends are detachably connected to the fixing frame. A plurality of driving motors are provided along the left and right directions and are arranged on the fixing frame through the mounting frame.

[0011] Preferably, a plurality of through holes along the vertical direction are opened in the middle part of the mounting frame along the left and right directions, a sliding sleeve is provided at the through hole, the output shaft of the driving motor passes through the sliding sleeve, and is rotatably and slidably connected with the sliding sleeve, and the elastic limiter is a spring along the vertical direction, which is arranged between the mounting frame and the connecting arm.

[0012] Preferably, the mounting bracket is height-adjustable.

[0013] Preferably, a ball bearing is provided at the bottom of the guide bar.

[0014] Preferably, a loosening shovel is further provided behind the fixed frame, and the loosening shovel is rotatably arranged, and the rotating axis of the loosening shovel is in the left and right direction, and a positioning mechanism is provided. In the natural state, the loosening shovel remains in a vertical state, and when the stone lifts the lifting frame, the loosening shovel can rotate.

[0015] Preferably, the fixing frame is fixed with a supporting leg, the supporting leg is provided with a roller, a connecting plate is fixed between the two rear supporting legs, a rotating shaft is provided below the connecting plate, a connecting rod is connected to the rotating shaft, the connecting rod is in an inverted "L" shape, one end of which is fixedly connected to the loosening shovel, the positioning mechanism comprises an inserting rod fixedly provided at the other end of the connecting rod and an inserting plate fixedly provided on the connecting arm, and a plugging hole adapted to the inserting rod is provided on the inserting plate;

[0016] When the plug rod is plugged into the plug plate, the loosening shovel remains in a vertical state. When the lifting frame is raised, the plug rod is separated from the plug plate, and the loosening shovel can be rotated.

[0017] Preferably, a self-rotating device is also provided on the connecting rod, and when the insertion rod is separated from the insertion plate, the bottom of the loosening shovel automatically rotates backward.

[0018] Preferably, a weight block is provided at one end of the connecting rod close to the insertion rod, and when the insertion rod is separated from the insertion plate, the end of the connecting rod close to the insertion rod rotates downward under the action of the gravity of the weight block.

[0019] Preferably, the connecting arm is also provided with a lifting rod

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention provides a lifting frame under the turntable and the cutter to protect the cutter. The weeds can pass through the gaps between adjacent guide bars in the lifting frame to achieve normal mowing. When encountering hard stones, the stones will first contact the lifting frame and push the lifting frame to rise, thereby driving the turntable and the cutter to rise together, so that the stones can pass from the bottom of the lifting frame without contacting the cutter, avoiding hard contact between the cutter and the stones, thereby ensuring the mowing effect and preventing the cutter from being damaged.

[0022] 2. When the present invention passes through stones, there is no need to change the route, and it only needs to continue to push the device forward to move. Moreover, it only needs to raise the lifting frame and the drive motor. The weight of this part of the structure is relatively light, and it is also more labor-saving when driving the lifting frame and the drive motor to raise.

[0023] 3. In the present invention, when some stones of relatively light weight are encountered and are not enough to push the lifting frame to rise, the lifting frame can push the stones forward, thereby facilitating the collection and processing of these stones.

[0024] 4. When mowing the grass, the weeds are located in the gaps between the adjacent guide bars in the lifting frame. The cut weeds fall along the gaps between the adjacent guide bars and are spread on the ground in an orderly manner, which is convenient for finally collecting the cut weeds.

[0025] 5. The lifting frame of the present invention can not only protect the cutter when encountering stones, but also protect the cutter at ordinary times to prevent accidental touch and harm to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle;

[0028] Figure 3 It is a schematic diagram of the connection between the driving motor and the lifting frame in the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the bottom roller of the guide bar in the present invention;

[0030] Figure 5It is a schematic diagram of the connection of the elastic limiter between the driving motor and the mounting frame in the present invention;

[0031] Figure 6 It is a schematic diagram of the overall structure of the loosening shovel in the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the soil loosening shovel in the natural state of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the loosening shovel when rotating in the present invention.

[0034] In the figure: 1. fixed frame, 2. support leg, 3. roller, 4. mounting frame, 5. cutter, 6. turntable, 7. lifting frame, 8. connecting arm, 9. driving motor, 10. sliding sleeve, 11. supporting column, 12. elastic limiter, 13. lifting rod, 14. connecting plate, 15. rotating shaft, 16. connecting rod, 17. loosening shovel, 18. weight block, 19. plug plate, 20. plug rod. DETAILED DESCRIPTION

[0035] The following will refer to the attached Figures 1 to 8 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0036] Embodiment 1

[0037] A weeding device for agricultural crop planting, such as the attached Figure 1 As shown, it includes a fixed frame 1, a driving motor 9 is provided on the fixed frame 1, the driving motor 9 is connected to a turntable 6, and a cutter 5 is provided on the turntable 6. In this device, the fixed frame 1 can be connected to a certain walking device (such as a vehicle body), and the walking device drives the device to walk. At the same time, the driving motor 9 drives the turntable 6 and the cutter 5 to rotate, so that grass can be cut. This part is the existing technology and will not be described in detail here.

[0038] As attached Figure 1 , Figure 2 , Figure 3 , Figure 5As shown, the driving motor 9 is slidably arranged in the vertical direction relative to the fixing frame 1, and is provided with an elastic limiter 12. The elastic limiter 12 is used to maintain the height of the driving motor 9 in a natural state, and maintain the height of the driving motor 9 when not subjected to external force. The driving motor 9 is fixedly connected to the connecting arm 8, and is fixedly connected to the lifting frame 7 through the connecting arm 8. The lifting frame 7 is located below the turntable 6, that is, the relative heights among the driving motor 9, the turntable 6, the cutter 5 and the lifting frame 7 remain unchanged. When not subjected to external force, they are all at a certain height together, and when subjected to external force, they are lifted together; the lifting frame 7 includes a plurality of guide bars arranged in the left-right direction, with gaps between adjacent guide bars, the guide bars are along the front-back direction, and the front end position is larger than the cutter 5, the guide bars include an inclined section 701 at the front part and a horizontal section 702 at the rear part, and the inclined section 701 is inclined downward from front to back.

[0039] Working principle: When the device moves forward, the weeds first pass through the gap between the adjacent guide bars of the lifting frame 7, move backward along the guide bars relatively, and are cut by the cutter 5. When encountering a stone, the stone first contacts the inclined section 701 of the guide bar, lifts the lifting frame 7 along the inclined section 701, and then passes through the lifting frame 7 along the horizontal section, so that the lifting frame 7 remains elevated. At the same time, the lifting frame 7 drives the driving motor 9, the turntable 6 and the cutter 5 to rise together, so that the stone can pass from the bottom of the lifting frame 7. After the stone has completely passed, the driving motor 9, the turntable 6, the cutter 5 and the lifting frame 7 are limited together under the action of the elastic limiter 12.

[0040] When used specifically, the device can be connected to a certain walking device, such as a vehicle body, through the fixing frame 1, and the device can be connected to the vehicle body, and the movement of the vehicle body can drive the device to move, thereby performing a grass cutting operation.

[0041] In this embodiment, a lifting frame 7 is arranged under the rotating disk 6 and the cutter 5. The lifting frame 7 protects the cutter 5, and the weeds can pass through the gaps between the adjacent guide bars in the lifting frame 7 to achieve normal mowing. When encountering hard stones, which are stones that are deeply buried in the ground and difficult to move, the stones will first contact the lifting frame 7 and push the lifting frame 7 to rise, thereby driving the rotating disk 6 and the cutter 5 to rise together, so that the stones can pass from the bottom of the lifting frame 7 and will not contact the cutter 5, avoiding the hard contact between the cutter 5 and the stones, thereby ensuring the mowing effect and preventing the cutter 5 from being damaged; in this embodiment, when passing through stones, there is no need to change the route, only need to continue to push the device forward to walk, and only need to lift the lifting frame 7 and the driving motor 9, the weight of this part of the structure is relatively light, and it is also relatively labor-saving when driving the lifting frame 7 and the driving motor 9 to lift; in this embodiment, when encountering some stones of relatively light mass that are not enough to push the lifting frame 7 to rise, a part of the stones is higher than the water level. The horizontal section 702 is not deeply buried in the ground and is light in weight. When the device moves forward, the lifting frame 7 can push the stones forward, so as to facilitate the collection and processing of the stones. Another part of the stones is small in weight and volume, and the height is lower than the horizontal section 702. The stones have little impact and can directly pass through the bottom of the lifting frame 7. When mowing the grass in this embodiment, the weeds are located in the gaps between the adjacent guide bars in the lifting frame 7. The cut weeds fall along the gaps between the adjacent guide bars and are orderly spread on the ground, so as to facilitate the final collection of the cut weeds. In this embodiment, the lifting frame 7 can not only protect the cutter 5 when encountering stones, but also protect the cutter 5 at ordinary times, that is, the front and bottom of the cutter 5 are isolated to a certain extent, so as to prevent accidental touch and cause harm to the human body. In addition, it should be noted that when encountering stones, the cutter 5 needs to rise, which will change the mowing height, resulting in incomplete cutting of some weeds, and only manual cutting is needed at the end.

[0042] As attached Figure 1 , Figure 2 , Figure 5 As shown, in this embodiment, the fixing frame 1 is a frame, and a mounting frame 4 is provided on the fixing frame 1. The mounting frame 4 is in a "U" shape. Both ends of the mounting frame 4 are detachably connected to the fixing frame 1, and can be specifically connected by screws. A plurality of drive motors 9 are provided along the left and right directions, and are arranged on the fixing frame 1 through the mounting frame 4. Specifically, a plurality of through holes along the vertical direction are opened in the middle part of the mounting frame 4 along the left and right directions, and a sliding sleeve 10 is provided at the through hole. The output shaft of the drive motor 9 passes through the sliding sleeve 10 and is rotatably and slidably connected with the sliding sleeve 10. The elastic limiter 12 is a spring along the vertical direction, and is arranged between the mounting frame 4 and the connecting arm 8 through a support column 11.

[0043] Working principle: multiple groups of cutters 5 are protected by multiple lifting frames 7. When encountering stones, the corresponding lifting frames 7 are raised to increase the weeding range, and the corresponding lifting frames 7 are raised as needed, which is easy to use and labor-saving. In addition, it should be noted that in this embodiment, multiple drive motors 9 are set to be controlled separately, the structure is simple, and it is convenient to repair separately; in addition, one drive motor 9 can also be used to drive multiple output shafts to move through a certain transmission mechanism. Specifically, the output shaft of the drive motor 9 is meshed and connected with the other two output shafts through a gear column with a certain height, and the other two output shafts are directly connected to the corresponding connecting arm 8, so that one drive motor 9 drives the entire movement without affecting the individual up and down movement of each output shaft. However, although this structure can reduce the number of drive motors 9, it requires precise matching between the gear columns, and when it is stuck, it will affect the entire device, which is not convenient for maintenance and inconvenience; the detachable structure of the mounting frame 4 and the fixing frame 1 can remove each structure from the fixing frame 1 for easy repair.

[0044] In this embodiment, the height of the mounting frame 4 is adjustable. The specific adjustment method is to set a telescopic fixing piece at the connection between the mounting frame 4 and the fixing frame 1. The telescopic fixing piece can adjust the length and fix it. The mounting frame 4 and the telescopic fixing piece are connected by bolts, so as to adjust the height of the mounting frame 4. By adjusting the height of the mounting frame 4, the height between the turntable 6 and the cutter 5 can be adjusted, and the cutting height can be adjusted. It is suitable for different scenes and is more flexible to use.

[0045] As attached Figure 4 As shown, in this embodiment, a ball 703 is provided at the bottom of the guide bar to reduce the friction when contacting with the stone, which is conducive to the stone passing smoothly along the guide bar.

[0046] Embodiment 2

[0047] As attached Figure 1 , Figure 2 As shown, the difference between this embodiment and the first embodiment is that in this embodiment, a loosening shovel 17 is further provided at the rear of the fixed frame 1. The loosening shovel 17 is used to loosen the soil to a certain extent, and can plow and loosen the soil to improve the soil structure, increase soil permeability, improve soil moisture retention capacity, promote growth, etc. This part is the existing technology and will not be elaborated on here.

[0048] As attached Figure 1 , Figure 2 , Figure 6 As shown, in this embodiment, the loosening shovel 17 is rotatably arranged, and the rotating shaft 15 of the loosening shovel 17 is along the left and right direction, and a positioning mechanism is provided. In the natural state, the loosening shovel 17 maintains a vertical state. In this state, the loosening shovel 17 can be inserted into the ground, and the soil is loosened as the device moves. When the stone lifts the lifting frame 7, the loosening shovel 17 can rotate and will not block the passage of the stone.

[0049] As attached Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 As shown, in this embodiment, a support leg 2 is fixedly provided on the fixed frame 1, that is, four support legs 2 are arranged at the four corners, and rollers 3 are arranged on the support legs 2. A connecting plate 14 is fixedly provided between the two rear support legs 2, and a rotating shaft 15 is arranged below the connecting plate 14. The rotating shaft 15 is connected to a connecting rod 16. The connecting rod 16 is in an inverted "L" shape, and one end is fixedly connected to a loosening shovel 17. The connecting rod 16 and the loosening shovel 17 are driven to rotate at one time by the rotating shaft 15. The positioning mechanism includes an insertion rod 20 fixedly provided at the other end of the connecting rod 16 and an insertion plate 19 fixedly provided on the connecting arm 8, and the insertion plate 19 is provided with a socket adapted to the insertion rod 20.

[0050] Working principle: When the plug rod 20 is plugged into the plug plate 19, the loosening blade 17 remains in a vertical state. Figure 7 As shown, when the lifting frame 7 is raised, the insertion rod 20 is separated from the insertion plate 19, and the loosening blade 17 can rotate. For details, please refer to the attached Figure 8 shown.

[0051] During specific use, since the roller 3 is provided, the roller 3 can be used as a walking device, and can be directly mounted on the fixed frame 1, and a handle can be added to form a small weeding equipment. The whole device can be controlled to walk for use by the handle, which is easy to use. It can also be used together with a vehicle body and assisted in walking by the roller 3. When the stone passes through the loosening shovel 17, the loosening shovel 17 can be stepped on, and the insertion rod 20 can be used to push the insertion plate 19 first, and then the insertion hole of the insertion plate 19 can be inserted to reposition the loosening shovel 17. In addition, in this embodiment, a lifting rod 13 is also provided on the connecting arm 8. When resetting the loosening shovel 17, the corresponding connecting arm 8 can also be manually lifted, and then the loosening shovel 17, and then the lifting rod 13 can be released to reposition the loosening shovel 17, which is more convenient to operate.

[0052] As attached Figure 6 As shown, in this embodiment, a self-rotating device is also provided on the connecting rod 16. When the insertion rod 20 is separated from the insertion plate 19, the bottom of the loosening shovel 17 automatically rotates backward. Specifically, in this embodiment, a weight block 18 is provided at one end of the connecting rod 16 close to the insertion rod 20. When the insertion rod 20 is separated from the insertion plate 19, the end of the connecting rod 16 close to the insertion rod 20 is rotated downward by the gravity of the weight block 18. In addition, a torsion spring can also be provided at the rotating shaft 15. When the insertion rod 20 is separated from the insertion plate 19, the connecting rod 16 rotates under the action of the torsion spring.

[0053] In addition, it should be noted that in this embodiment, since it is necessary to overcome the self-rotation device when the loosening shovel 17 is reset, in order to further save physical strength, a certain electric control mechanism can also be set. Specifically, a sensor capable of monitoring the position of the connecting arm 8 is set, which can be a distance sensor for monitoring the height of the connecting arm 8 set on the mounting frame 4, and an electric telescopic rod capable of pushing the connecting rod 16 to move is set. Specifically, a small telescopic cylinder can be set on the connecting plate 14, and a controller electrically connected to the distance sensor and the small telescopic cylinder is provided. In a natural state, the small telescopic cylinder shortens and moves away from the connecting rod. When encountering a stone, the lifting frame 7 is raised, and the connecting arm 8 is driven to rise. The distance sensor detects that the connecting arm 8 is raised, the insertion rod 20 is separated from the insertion plate 19, and the connecting rod 16 rotates. Then the stone passes through the lifting frame 7 and passes through the loosening shovel. 17, the lifting frame 7 is reset under the action of the elastic limiter 12 and gravity, the distance sensor detects the descent of the connecting arm 8 again, and then transmits an electrical signal to the controller, the controller controls the small telescopic cylinder to extend, pushes the connecting rod 16, and uses the connecting rod 16 to reset, and finally the small telescopic cylinder is reset. During this period, when the connecting rod 16 pushes the connecting arm 8 to rise and fall once, the distance sensor controls the movement of the small telescopic cylinder through the controller, that is, during the whole process, the distance sensor detects the lifting and falling movement of the connecting arm 8 twice, and the small telescopic cylinder completes a telescopic movement. This embodiment can reset the loosening shovel 17 through electronic control, which further saves physical strength; when this embodiment is used in conjunction with a vehicle body, it only needs to drive the vehicle body to move, and it can automatically mow the grass, pass through stones, protect the cutter 5, and complete loosening. This embodiment is easy to operate, has various functions, and is highly practical.

[0054] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A weeding device for agricultural crop planting, comprising a fixed frame (1), wherein a driving motor (9) is provided on the fixed frame (1), the driving motor (9) is connected to a rotating disk (6), and a cutting knife (5) is provided on the rotating disk (6), characterized in that: The driving motor (9) is slidably arranged in a vertical direction relative to the fixing frame (1) and is provided with an elastic stopper (12). The driving motor (9) is fixedly connected to a connecting arm (8), and the connecting arm (8) is fixedly connected to a lifting frame (7). The lifting frame (7) is located below the turntable (6). The lifting frame (7) includes a plurality of guide bars arranged in a left-right direction. The guide bars are arranged in a front-back direction. The guide bars include an inclined section (701) at the front part and a horizontal section (702) at the rear part. The inclined section (701) is inclined downward from front to back. During operation, weeds pass through the lifting frame (7) and are cut by the cutter (5). When encountering stones, the stones lift the lifting frame (7), and the lifting frame (7) drives the driving motor (9), the rotating disk (6) and the cutter (5) to rise together, so that the stones pass through the bottom of the lifting frame (7).

2. The weeding device for agricultural crop planting according to claim 1, characterized in that: The fixing frame (1) is in the form of a frame, a mounting frame (4) is provided on the fixing frame (1), the mounting frame (4) is in a "U" shape, and both ends are detachably connected to the fixing frame (1), a plurality of drive motors (9) are provided along the left and right directions, and are arranged on the fixing frame (1) via the mounting frame (4).

3. The weeding device for agricultural crop planting according to claim 2, characterized in that: A plurality of through holes along the vertical direction are provided in the middle of the mounting frame (4) along the left-right direction, a sliding sleeve (10) is provided at the through hole, an output shaft of the driving motor (9) passes through the sliding sleeve (10), and is rotationally and slidably connected to the sliding sleeve (10), and an elastic limiting member (12) is a spring along the vertical direction, and is provided between the mounting frame (4) and the connecting arm (8).

4. The weeding device for agricultural crop planting according to claim 3, characterized in that: The height of the mounting frame (4) is adjustable.

5. The weeding device for agricultural crop planting according to claim 1, characterized in that: A ball (703) is provided at the bottom of the guide bar.

6. The weeding device for agricultural crop planting according to claim 1, characterized in that: A loosening shovel (17) is also provided at the rear of the fixed frame (1). The loosening shovel (17) is rotatably arranged, and the rotation axis (15) of the loosening shovel (17) is along the left-right direction and is provided with a positioning mechanism. In a natural state, the loosening shovel (17) remains in a vertical state. When the lifting frame (7) is lifted by stones, the loosening shovel (17) can be rotated.

7. The weeding device for agricultural crop planting according to claim 6, characterized in that: The fixing frame (1) is fixedly provided with a support leg (2), the support leg (2) is provided with a roller (3), a connecting plate (14) is fixedly provided between the two rear support legs (2), a rotating shaft (15) is provided below the connecting plate (14), the rotating shaft (15) is connected to a connecting rod (16), the connecting rod (16) is in an inverted "L" shape, one end of which is fixedly connected to a loosening shovel (17), the positioning mechanism comprises an inserting rod (20) fixedly provided at the other end of the connecting rod (16) and an inserting plate (19) fixedly provided on the connecting arm (8), the inserting plate (19) being provided with an inserting hole adapted to the inserting rod (20); When the insertion rod (20) is plugged into the plug plate (19), the loosening shovel (17) remains in a vertical state; when the lifting frame (7) is raised, the insertion rod (20) is separated from the plug plate (19), and the loosening shovel (17) can be rotated.

8. The weeding device for agricultural crop planting according to claim 7, characterized in that: The connecting rod (16) is also provided with a rotation device, and when the inserting rod (20) is separated from the inserting plate (19), the bottom of the loosening shovel (17) automatically rotates backwards.

9. The weeding device for agricultural crop planting according to claim 8, characterized in that: A weight block (18) is provided at one end of the connecting rod (16) close to the insertion rod (20). When the insertion rod (20) is separated from the insertion plate (19), the end of the connecting rod (16) close to the insertion rod (20) rotates downward under the gravity of the weight block (18).

10. The weeding device for agricultural crop planting according to claim 9, characterized in that: A lifting rod (13) is also provided on the connecting arm (8).

Images