Weeding device with elastic independent suspension self-adapting profiling mechanism

Abstract

The application discloses a weeding device with an elastic independent suspension self-adapting profiling mechanism and relates to the technical field of agricultural weeding. The weeding device comprises a cross beam arm, an outer shell, a fixed wheel, an avoiding assembly, a positioning assembly and an elastic assembly. The outer shell is arranged at the bottom of the cross beam arm. The fixed wheel is arranged at the top of the outer shell. The outer shell can rotate relative to the fixed wheel. The avoiding assembly is arranged on the outer surface of the fixed wheel. The positioning assembly is movably arranged at one side of the top of the outer shell. One end of the positioning assembly can extend into the avoiding assembly. The elastic assembly is movably arranged in the inner part of the outer shell. The weeding assembly is fixedly connected to one end of the elastic assembly penetrating through the outer shell. Through the cooperation of the elastic assembly, the positioning assembly, the extruding assembly and the avoiding assembly, when the weeding assembly passes through the ground with small fluctuations, the weeding assembly can first be lifted and compensated through the elastic assembly. The positioning assembly still limits the rotation of the outer shell relative to the fixed wheel, so that the weeding shovel can maintain a relatively stable working angle.

Description

Technical Field

[0001] This invention relates to the field of agricultural weeding technology, and in particular to a weeding device with an elastic, independently suspended, adaptive contouring mechanism. Background Technology

[0002] In agricultural weeding operations, weeding devices are typically mounted on traction or mobile equipment and use weeding shovels, blades, and other working components to remove surface weeds. Because field surfaces are uneven, with clods of soil, undulating ridges, stubble, or stones, the weeding components need to maintain a certain ground-hugging position during movement to ensure weeding depth and effectiveness. To adapt to changes in ground height, existing weeding devices usually incorporate contoured wheels, flexible suspension, or lifting and buffering structures, allowing the weeding components to move up and down with the ground when traversing minor undulations, thereby reducing fluctuations in weeding depth.

[0003] However, existing weeding devices primarily rely on vertical lifting compensation in their contour-following structures. When the weeding component encounters a large protrusion or a hard obstacle, the compensation stroke of the elastic lifting structure is limited, making it difficult to absorb the relative displacement between the weeding shovel and the protrusion. This can easily cause the weeding shovel to collide hard with the protrusion, resulting in significant impact forces on the weeding shovel, connecting frame, or suspension components. Directly reducing the locking stability of the weeding shovel can easily cause it to swing during normal weeding, affecting weeding depth and operational stability. Therefore, a weeding device with an elastic independent suspension adaptive contour-following mechanism is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a weeding device with an elastic, independently suspended, adaptive contouring mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a weeding device with an elastically independent suspension adaptive contouring mechanism, comprising a crossbeam arm, and further comprising: The housing is disposed at the bottom of the crossbeam arm; A fixed wheel is disposed at the top of the housing, and the housing is capable of rotating relative to the fixed wheel; A clearance assembly is provided on the outer surface of the fixed wheel; A positioning component, wherein the positioning component is movably disposed on one side of the top of the housing, and one end of the positioning component can extend into the avoidance component; An elastic component, which is movably disposed inside the housing; A weeding assembly, wherein the weeding assembly is fixedly connected to one end of an elastic component that passes through the housing; A compression assembly is fixedly connected to the outside of an elastic assembly, and the compression assembly can rise and fall with the elastic assembly and push the positioning assembly to move. When the weeding component is in normal weeding state, the positioning component restricts the rotation of the outer shell relative to the fixed wheel; when the elastic component is lifted by the weeding component and rises to the trigger position, the squeezing component pushes the positioning component to release the rotation restriction on the outer shell and keeps the positioning component within the avoidance component; when the outer shell rotates relative to the fixed wheel to avoid it, the positioning component forms a swing limit constraint within the avoidance component, and releases the swing limit constraint to continue avoiding it when the weeding component continues to be obstructed.

[0006] Preferably, the avoidance component includes: An arc-shaped groove is formed on the outer surface of the fixed wheel; A positioning groove, wherein the positioning groove is formed at one end of the arc-shaped groove; An obstacle avoidance groove is provided in the middle of an arc-shaped groove and is connected to the arc-shaped groove. The depth of the obstacle avoidance groove is smaller than the depth of the positioning groove.

[0007] Preferably, the positioning component includes: A movable block is slidably disposed on the top of the outer casing, and a pressure chamber is formed in the middle of the movable block; A positioning block is fixedly connected to one side of the middle part of the movable block, and one side of the positioning block is inclined. A positioning bolt, which is threadedly connected to the middle of the movable block; An actuating spring is sleeved on the outer surface of the positioning bolt.

[0008] Preferably, the elastic component includes: A fixing post, which is fixedly connected to the outer casing; A lifting sleeve is fitted onto the end of a fixed column, and the cross-sectional profile of the lifting sleeve is set to be square on the outside and round on the inside. The outer ring is fixedly connected to the end of the lifting sleeve; A buffer spring, wherein the buffer spring is sleeved on the outer surface of the fixed post; The base frame is fixedly connected to the bottom of the lifting sleeve.

[0009] Preferably, the weeding component includes: The base frame has two rotatable contour wheels. The weeding shovel is fixedly connected to the bottom end of the base frame and is located in the middle between two contour wheels.

[0010] Preferably, the extrusion assembly includes: A connecting rod, which is fixedly connected to one side of the outer ring; An extrusion block is fixedly connected to the end of a connecting rod, and the outer contour of the extrusion block is wedge-shaped.

[0011] Preferably, a bracket is connected between the fixed wheel and the crossbeam arm, and the outer casing includes: The outer shell plate is rotatably connected to the outside of the fixed wheel, and a protruding cavity is provided on one side of the top of the outer shell plate; A side panel is connected to one side of the outer shell panel, and a top plate is fixedly connected to one side of the top of the side panel.

[0012] Preferably, the support includes: The U-shaped frame is fixedly connected to the bottom of the crossbeam arm; A support rod is fixedly connected to the bottom of the U-shaped frame, and one end of the support rod is fixedly connected to one side of a fixed wheel.

[0013] Preferably, the fixing column is fixedly connected to the bottom of the top plate, and the lifting sleeve is inserted into the bottom of the outer shell plate.

[0014] Preferably, the movable distance of the moving block is configured such that the positioning block can exit the positioning groove, while the positioning block remains extended into the arc-shaped groove or the clearance groove; the position of the squeezing block corresponds to the position of the pressure chamber, and the squeezing block can extend into the pressure chamber and push the moving block to move when it rises with the lifting sleeve.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention, through the cooperation of an elastic component, a positioning component, a squeezing component, and a avoidance component, enables the weeding component to compensate for minor undulations in the ground by first adjusting its height using the elastic component, while the positioning component still restricts the rotation of the outer shell relative to the fixed wheel, thus maintaining a relatively stable working angle for the weeding shovel. When the weeding component encounters a larger protrusion and causes the elastic component to rise to the trigger position, the squeezing component pushes the positioning component to move, allowing the outer shell to rotate relative to the fixed wheel to avoid the protrusion. This design ensures stable weeding under conditions of minor undulations and reduces the risk of the weeding shovel colliding directly with a protrusion under conditions of larger protrusions. 2. This invention, by setting an arc-shaped groove, a positioning groove, and a clearance groove on the fixed wheel, allows the positioning component to enter the positioning groove and lock in place during normal weeding. During rotational clearance, it can move along the arc-shaped groove, and a swing-limiting constraint is formed at the clearance groove. This design ensures that even after the outer shell is released from rotational restriction, it is still guided by the groove structure of the clearance component, preventing the weeding component from directly entering a large-scale free-swinging state, thereby reducing the possibility of the weeding component colliding with the outer shell or surrounding structures during clearance. 3. This invention limits the movable distance of the moving block, allowing the positioning block to exit the positioning groove while still remaining inserted into the arc-shaped groove or clearance groove. This design ensures that the positioning block does not completely separate from the clearance component during the outer casing's rotation and clearance process. This maintains the guiding relationship during clearance and facilitates subsequent manual resetting, allowing the positioning block to return to its position along the arc-shaped groove, reducing the difficulty of re-aligning the hole. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle; Figure 5 This is a schematic diagram of the movable block structure of the present invention; Figure 6 This is a schematic diagram of the lifting sleeve structure of the present invention.

[0017] In the attached diagram: 1. Crossbeam arm; 2. Bracket; 201. U-shaped frame; 202. Support rod; 3. Outer shell; 301. Outer shell plate; 302. Raised cavity; 303. Side plate; 304. Top plate; 4. Fixed wheel; 5. Avoidance assembly; 501. Arc groove; 502. Positioning groove; 503. Avoidance groove; 6. Positioning assembly; 601. Moving block; 602. Pressure chamber; 603. Positioning block; 604. Positioning bolt; 605. Pushing spring; 7. Elastic assembly; 701. Fixed column; 702. Lifting sleeve; 703. Outer ring; 704. Buffer spring; 705. Base frame; 8. Weeding assembly; 801. Contouring wheel; 802. Weeding shovel; 9. Compressing assembly; 901. Connecting rod; 902. Compressing block. Detailed Implementation

[0018] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides, for example Figures 1-6The weeding device shown has an elastic independent suspension adaptive contouring mechanism, including a crossbeam arm 1 and a housing 3. The housing 3 is located at the bottom of the crossbeam arm 1. A fixed wheel 4 is located at the top inside the housing 3 and can rotate relative to the fixed wheel 4. An avoidance component 5 is opened on the outer surface of the fixed wheel 4. A positioning component 6 is movably located on one side of the top of the housing 3 and one end of the positioning component 6 can extend into the avoidance component 5. An elastic component 7 is movably located inside the housing 3. A weeding component 8 is fixedly connected to one end of the elastic component 7 that passes through the housing 3. A squeezing component 9 is fixedly connected to the outside of the elastic component 7 and can rise and fall with the elastic component 7 and push the positioning component 6 to move. When the weeding component 8 is in normal weeding state, the positioning component 6 restricts the rotation of the outer shell 3 relative to the fixed wheel 4; when the elastic component 7 is lifted by the weeding component 8 and rises to the trigger position, the squeezing component 9 pushes the positioning component 6 to release the rotation restriction on the outer shell 3, and keeps the positioning component 6 within the avoidance component 5; when the outer shell 3 rotates relative to the fixed wheel 4 to avoid it, the positioning component 6 forms a swing limit constraint within the avoidance component 5, and releases the swing limit constraint to continue avoiding it when the weeding component 8 continues to be obstructed.

[0020] During normal weeding, the weeding component 8 is located below the outer casing 3 and in contact with the ground. The positioning component 6 extends into the avoidance component 5, keeping the outer casing 3 and the fixed wheel 4 in a relatively locked state, thus maintaining a stable weeding angle for the weeding component 8. When there are small undulations in the ground, the weeding component 8 drives the elastic component 7 to rise and fall relative to the outer casing 3. The elastic component 7 absorbs the height changes caused by the undulations. At this time, the positioning component 6 still restricts the rotation of the outer casing 3 relative to the fixed wheel 4, and the weeding component 8 continues to perform stable weeding. When the ground protrudes significantly, the elastic component 7 rises further with the weeding component 8. The squeezing component 9 moves with the elastic component 7 and pushes the positioning component 6, causing the positioning component 6 to release the rotation restriction on the outer casing 3. The outer casing 3 can then rotate relative to the fixed wheel 4, thereby causing the weeding component 8 to rotate and avoid the protrusion, reducing the possibility of the weeding component 8 colliding hard with a large protrusion. Meanwhile, after the positioning component 6 is unlocked, it remains within the avoidance component 5, so that the rotation process of the outer shell 3 is still guided and constrained by the avoidance component 5, preventing the weeding component 8 from directly entering an unrestrained swing state after being unlocked, and facilitating subsequent manual reset along the avoidance component 5.

[0021] Through the above structural coordination, the weeding component 8 can rely on the elastic component 7 to perform lifting compensation and maintain a stable weeding posture under small undulation conditions. Under larger convex conditions, it can achieve controlled rotation and avoidance through the cooperation of the positioning component 6 and the avoidance component 5. This balances the stability of normal weeding and the protection against large convexities, and reduces the swing amplitude and repositioning difficulty after avoidance.

[0022] Furthermore, the avoidance component 5 includes an arc-shaped groove 501, which is formed on the outer surface of the fixed wheel 4. A positioning groove 502 is formed at one end of the arc-shaped groove 501, and an avoidance groove 503 is formed in the middle of the arc-shaped groove 501. The avoidance groove 503 is connected to the arc-shaped groove 501, and the depth dimension of the avoidance groove 503 is smaller than the depth dimension of the positioning groove 502.

[0023] When the positioning component 6 and the avoidance component 5 cooperate, the positioning groove 502 serves as the locking position under normal weeding conditions. After the positioning component 6 extends into the positioning groove 502, it can limit the rotation of the outer shell 3 relative to the fixed wheel 4, keeping the weeding component 8 in a stable working state and preventing the weeding shovel 802 from swaying due to soil resistance during normal weeding. The arc-shaped groove 501 serves as a guide path during the avoidance process. When the positioning component 6 is pushed out of the positioning groove 502 by the squeezing component 9, the positioning component 6 is still located in the arc-shaped groove 501. When the outer shell 3 rotates relative to the fixed wheel 4, the positioning component 6 moves along the arc-shaped groove 501, so that the avoidance rotation of the weeding component 8 is not completely free swinging, but moves in a controlled manner along a preset trajectory. The avoidance groove 503 is located in the middle of the arc-shaped groove 501. When the positioning component 6 moves to the avoidance groove 503, the avoidance groove 503 forms an intermediate swing-limiting position, so that the outer shell 3 and the weeding component 8 do not swing directly and significantly during the avoidance process, thereby reducing the possibility of the weeding component 8 swinging back and hitting the outer shell 3 or surrounding structures. Since the depth of the clearance groove 503 is smaller than the depth of the positioning groove 502, the positioning component 6 forms a swing constraint in the clearance groove 503, rather than a depth lock under normal weeding conditions. Therefore, when the weeding component 8 continues to be obstructed, the positioning component 6 can disengage from the clearance groove 503 and continue to move along the arc groove 501, so that the device can continue to avoid the clearance after the swing is limited, thus preventing the weeding component 8 from being hard-hit by a large protrusion.

[0024] Furthermore, the positioning component 6 includes a movable block 601, which is slidably disposed on the top of the housing 3. A pressure chamber 602 is provided in the middle of the movable block 601. A positioning block 603 is fixedly connected to one side of the middle of the movable block 601, and one side of the positioning block 603 is inclined. A positioning bolt 604 is threadedly connected to the middle of the movable block 601. A push spring 605 is sleeved on the outer surface of the positioning bolt 604.

[0025] When the squeezing component 9 does not push the positioning component 6, the pushing spring 605 causes the moving block 601 to tend to move towards the avoidance component 5, allowing the positioning block 603 to stably extend into the avoidance component 5. During normal weeding, the positioning block 603 extends into the positioning groove 502, thereby restricting the rotation of the outer shell 3 relative to the fixed wheel 4, keeping the weeding component 8 in a stable weeding posture. When the elastic component 7 rises to the trigger position, the squeezing component 9 enters the pressure chamber 602 and pushes the moving block 601 to slide. The moving block 601 drives the positioning block 603 out of the positioning groove 502, giving the outer shell 3 the condition to rotate relative to the fixed wheel 4. One side of the positioning block 603 is inclined. When the positioning block 603 enters the clearance groove 503 and forms a limited swing constraint, if the weeding component 8 is still blocked by a large protrusion, the inclined side of the positioning block 603 can be squeezed by the edge of the clearance groove 503, causing the positioning block 603 to disengage from the clearance groove 503 and continue to move along the arc groove 501, thereby preventing the clearance groove 503 from completely jamming the positioning block 603. Through the cooperation of the moving block 601, the positioning block 603, the pressure chamber 602 and the pushing spring 605, the positioning component 6 can form a stable lock in the normal state and a disengageable limited swing engagement in the clearance state, so that locking and continued clearance can be switched in the same positioning structure.

[0026] Furthermore, the elastic component 7 includes a fixed post 701, which is fixedly connected to the outer shell 3. A lifting sleeve 702 is sleeved on the end of the fixed post 701, and the cross-sectional profile of the lifting sleeve 702 is set as an outer square and an inner circle. An outer ring 703 is fixedly connected to the end of the lifting sleeve 702. A buffer spring 704 is sleeved on the outer surface of the fixed post 701. A base frame 705 is fixedly connected to the bottom of the lifting sleeve 702.

[0027] When the weeding component 8 is lifted by ground undulations, the base frame 705 drives the lifting sleeve 702 to move upward relative to the fixed column 701, compressing the buffer spring 704, thereby absorbing small ground undulations through elastic lifting. The lifting sleeve 702 is sleeved on the end of the fixed column 701, which provides lifting guidance for the lifting sleeve 702. The cross-sectional profile of the lifting sleeve 702 is set as an outer square and an inner circle. Its inner circle part facilitates lifting and lowering with the fixed column 701, while the outer square part can cooperate with the insertion hole or guide hole at the bottom of the outer shell plate 301 to reduce the circumferential rotation and deflection of the lifting sleeve 702 during lifting. When the ground undulations are small, the lifting sleeve 702 mainly drives the buffer spring 704 to compress, and the weeding component 8 performs vertical compensation with the ground, while the positioning component 6 remains locked, thereby avoiding frequent triggering of the outer shell 3 to rotate under small undulation conditions. When the ground protrusion is large, the lifting sleeve 702 rises further, and the outer ring 703 rises synchronously with the lifting sleeve 702, driving the squeezing component 9 to the trigger position, so that the positioning component 6 releases the rotation restriction on the outer shell 3. Thus, the elastic component 7 forms a dividing structure for small undulation lifting compensation and large protrusion avoidance trigger, so that the device can maintain normal weeding stability and enter the rotation avoidance state when the lifting compensation is insufficient.

[0028] Furthermore, the weeding assembly 8 includes contour wheels 801, and two contour wheels 801 are rotatably arranged inside the base frame 705. The weeding shovel 802 is fixedly connected to the bottom end of the base frame 705, and the weeding shovel 802 is located in the middle between the two contour wheels 801.

[0029] During weeding operations, the two contour wheels 801 first contact the ground and roll with the undulations of the ground. The base frame 705 rises and falls under the drive of the contour wheels 801, thereby causing the weeding shovel 802 to rise and fall to compensate for changes in ground height. The weeding shovel 802 is located in the middle between the two contour wheels 801, allowing it to use the ground support provided by the two contour wheels 801 as a reference for operation, reducing the tilting of the weeding shovel 802 caused by unilateral undulations, and helping to maintain the penetration depth and weeding stability of the weeding shovel 802. When the ground undulations are small, the contour wheels 801 drive the base frame 705 and the lifting sleeve 702 to rise and fall elastically, and the weeding shovel 802 continues to maintain the weeding state, without being directly triggered to rotate and avoid collisions due to small undulations. When the ground protrusion is large, the contour wheel 801 is lifted by the protrusion, driving the base frame 705 and the lifting sleeve 702 to rise to the trigger position. When the weeding shovel 802 continues to be blocked by the protrusion, the outer shell 3 can rotate relative to the fixed wheel 4 to avoid it, thereby reducing the risk of the weeding shovel 802 being hard against the protrusion. By arranging the weeding shovel 802 between the two contour wheels 801, the contour wheels 801 not only serve as ground support, but also provide a stable height response basis for the lifting compensation of the weeding shovel 802 and subsequent avoidance triggering, so that the weeding depth maintenance and large protrusion avoidance can be continuously achieved based on the same base frame 705 action.

[0030] Furthermore, the extrusion assembly 9 includes a connecting rod 901, which is fixedly connected to one side of the outer ring 703, and an extrusion block 902 is fixedly connected to the end of the connecting rod 901, with the outer contour of the extrusion block 902 being wedge-shaped.

[0031] When the elastic component 7 rises under the jacking of the weeding component 8, the outer ring 703 rises synchronously with the lifting sleeve 702, and the connecting rod 901 drives the squeezing block 902 to move synchronously. When the rising stroke of the lifting sleeve 702 has not reached the trigger position, the squeezing block 902 does not push or is insufficient to push the moving block 601 to complete the locking release, and the positioning block 603 still restricts the rotation of the outer shell 3 relative to the fixed wheel 4, so that the weeding component 8 remains locked in the weeding state under small undulation conditions. When the lifting sleeve 702 continues to rise to the trigger position, the squeezing block 902 enters the pressure chamber 602, and through its wedge-shaped outer contour, converts the vertical lifting action into a lateral pushing action on the moving block 601, causing the moving block 601 to drive the positioning block 603 out of the positioning groove 502. This squeezing component 9 allows the lifting stroke of the elastic component 7 to be directly converted into the unlocking action of the positioning component 6, without the need for additional electrical control or complex transmission structures. Therefore, for small undulations, the lifting compensation is mainly carried out by the elastic component 7, while for large bulges, the rotation avoidance of the outer shell 3 is triggered by the squeezing component 9, so that there is a clear triggering sequence between lifting compensation and rotation avoidance.

[0032] Furthermore, a bracket 2 is connected between the fixed wheel 4 and the crossbeam arm 1. The outer shell 3 includes an outer shell plate 301, which is rotatably connected to the outside of the fixed wheel 4. A protruding cavity 302 is provided on one side of the top of the outer shell plate 301. A side plate 303 is connected to one side of the outer shell plate 301, and a top plate 304 is fixedly connected to one side of the top of the side plate 303.

[0033] When the outer shell 3 rotates to avoid the fixed wheel 4, the fixed wheel 4 remains relatively fixed to the crossbeam arm 1 via the bracket 2. The outer shell plate 301 can rotate relative to the fixed wheel 4, thereby driving the side plate 303, top plate 304, elastic component 7, and weeding component 8 to rotate and avoid the wheel 4. The outer shell plate 301 and the fixed wheel 4 can be rotated through a shaft and bushing. If necessary, a bearing structure can be installed at the rotational connection position to ensure that the outer shell 3 can rotate stably with the fixed wheel 4 as the reference. The protruding cavity 302 is fixed to one side of the top of the outer shell plate 301 by connecting bolts and connecting nuts. The protruding cavity 302 provides space for the installation and movement of the moving block 601 and restricts the direction of movement of the moving block 601, so that the moving block 601 can slide in a predetermined direction when the pressure chamber 602 is pushed by the squeezing block 902. The side plate 303 is connected to one side of the outer shell plate 301, and the top plate 304 is fixed to the top of the side plate 303, providing an installation base for structures such as the fixed column 701, so that the elastic component 7 can be set inside the outer shell 3 and rotate together with the outer shell 3 to avoid obstacles.

[0034] Furthermore, the support 2 includes a U-shaped frame 201, which is fixedly connected to the bottom of the crossbeam arm 1, and a support rod 202 is fixedly connected to the bottom of the U-shaped frame 201. One end of the support rod 202 is fixedly connected to one side of the fixed wheel 4.

[0035] When the outer casing 3 needs to rotate relative to the fixed wheel 4 to avoid a collision, the fixed wheel 4 should serve as a relatively fixed rotation reference. The U-shaped frame 201 is fixed to the bottom of the crossbeam arm 1 by connecting bolts and nuts, allowing the bracket 2 to be stably installed on the crossbeam arm 1. The support rod 202 is fixed to the bottom of the U-shaped frame 201 by connecting bolts and nuts, with one end of the support rod 202 fixedly connected to one side of the fixed wheel 4, thus keeping the fixed wheel 4 fixed relative to the crossbeam arm 1. The installation method using connecting bolts and nuts facilitates the disassembly and maintenance of the bracket 2 and the crossbeam arm 1, and the support rod 202 and the U-shaped frame 201. At the same time, it ensures the connection stability when the fixed wheel 4 serves as the rotation reference for the outer casing 3, preventing the fixed wheel 4 from affecting the collision avoidance action due to synchronous deflection with the outer casing 3.

[0036] Furthermore, the fixing column 701 is fixedly connected to the bottom of the top plate 304, and the lifting sleeve 702 is inserted into the bottom of the outer shell plate 301.

[0037] When the elastic component 7 performs lifting compensation, the fixed column 701 is fixedly connected to the bottom of the top plate 304, so that the fixed column 701 can maintain an overall installation relationship with the outer shell 3 and provide a vertical guide foundation for the lifting sleeve 702. The lifting sleeve 702 is inserted into the bottom of the outer shell plate 301, so that the lifting sleeve 702 can pass through the outer shell plate 301 and drive the base frame 705 and the weeding component 8 to rise and fall below the outer shell 3. This arrangement can concentrate the lifting path of the elastic component 7 inside the outer shell 3 and at the bottom of the outer shell plate 301, reduce the deflection of the lifting sleeve 702 during the lifting process, and give the weeding component 8 a more stable lifting compensation direction under small undulation conditions. At the same time, when the outer shell 3 rotates relative to the fixed wheel 4 to avoid it, the fixed column 701, the lifting sleeve 702 and the weeding component 8 can rotate with the outer shell 3 as a whole, so that the elastic lifting compensation structure and the rotation avoidance structure maintain continuous cooperation.

[0038] Furthermore, the movable distance of the moving block 601 is configured such that the positioning block 603 can exit the positioning groove 502, while the positioning block 603 still extends into the arc groove 501 or the clearance groove 503; the position of the pressing block 902 corresponds to the position of the pressure chamber 602, and the pressing block 902 can extend into the pressure chamber 602 and push the moving block 601 to move when it rises with the lifting sleeve 702.

[0039] When the lifting sleeve 702 rises to the trigger position, the pressing block 902 enters the pressure chamber 602 and pushes the moving block 601 to move, causing the positioning block 603 to exit the positioning groove 502, thereby releasing the rotation restriction of the outer shell 3 relative to the fixed wheel 4. The movable distance of the moving block 601 is limited, so that although the positioning block 603 can exit the positioning groove 502, it will not completely disengage from the avoidance component 5, but will still remain extended into the arc groove 501 or the avoidance groove 503. In this way, during the rotation avoidance process of the outer shell 3, the positioning block 603 can still be guided and constrained by the arc groove 501 and the avoidance groove 503, reducing the free swing amplitude of the weeding component 8 after it is unlocked. When a reset is required, the operator manually pulls back the outer casing 3 or the weeding component 8. Since the positioning block 603 is not completely disengaged from the avoidance component 5, the positioning block 603 can be guided along the arc groove 501 to the positioning groove 502 and re-enter the positioning groove 502 under the action of the push spring 605, restoring the normal weeding state and reducing the difficulty of re-aligning the hole during reset.

[0040] During operation, the beam arm 1 moves with the traction equipment, and the two contour wheels 801 first contact the ground. The weeding shovel 802 is positioned between the two contour wheels 801 to remove weeds. Under normal weeding conditions, the positioning block 603 extends into the positioning groove 502, restricting the rotation of the outer shell 3 relative to the fixed wheel 4, allowing the weeding shovel 802 to maintain a relatively stable entry angle and weeding depth. When the ground has only slight undulations, the contour wheels 801 drive the base frame 705 and the lifting sleeve 702 to move upward relative to the fixed column 701, compressing the buffer spring 704. The weeding assembly 8 completes the lifting compensation through the elastic component 7. At this time, the squeezing block 902 does not cause the positioning block 603 to exit the positioning groove 502, and the outer shell 3 remains locked, thus preventing the weeding shovel 802 from swinging unnecessarily due to ordinary undulations. When the ground protrusion is large and the lifting sleeve 702 continues to rise, the outer ring 703 drives the squeezing block 902 into the pressure chamber 602 via the connecting rod 901. The squeezing block 902 pushes the moving block 601 to move, causing the positioning block 603 to exit the positioning groove 502. The outer shell 3 can then rotate relative to the fixed wheel 4 to drive the weeding shovel 802 to avoid the protrusion. Since the positioning block 603 remains in the arc groove 501 or the avoidance groove 503 after exiting the positioning groove 502, the rotation and avoidance process of the outer shell 3 will not completely deviate from the guide of the avoidance component 5. When the positioning block 603 enters the avoidance groove 503, the avoidance groove 503 can form a swing limit constraint on the outer shell 3, reducing the swing amplitude of the weeding component 8 after it is unlocked. If the weeding shovel 802 continues to be blocked by the protrusion, the inclined side of the positioning block 603 can be pushed out of the avoidance groove 503 by the edge of the avoidance groove 503 and continue to move along the arc groove 501, allowing the outer shell 3 and the weeding component 8 to continue to rotate and avoid the protrusion. After the protrusion is passed, the operator can manually push back the outer casing 3 or the weeding component 8. The positioning block 603 is guided back to the positioning groove 502 along the arc groove 501 and re-enters the positioning groove 502 under the action of the push spring 605, restoring the normal weeding state.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weeding device with an elastic independent suspension adaptive contouring mechanism, comprising a crossbeam arm (1), characterized in that, Also includes: The outer casing (3) is disposed at the bottom of the crossbeam arm (1); A fixed wheel (4) is disposed at the top inside the housing (3), and the housing (3) is capable of rotating relative to the fixed wheel (4); The avoidance component (5) is provided on the outer surface of the fixed wheel (4); Positioning component (6), which is movably disposed on one side of the top of the housing (3), and one end of the positioning component (6) can extend into the avoidance component (5); An elastic component (7) is movably disposed inside the housing (3); Weeding component (8), which is fixedly connected to one end of the elastic component (7) that passes through the outer shell (3); The extrusion assembly (9) is fixedly connected to the outside of the elastic assembly (7), and the extrusion assembly (9) can move up and down with the elastic assembly (7) and push the positioning assembly (6) to move. When the weeding component (8) is in normal weeding state, the positioning component (6) restricts the rotation of the outer shell (3) relative to the fixed wheel (4); when the elastic component (7) is lifted by the weeding component (8) and rises to the trigger position, the squeezing component (9) pushes the positioning component (6) to release the rotation restriction on the outer shell (3) and keep the positioning component (6) inside the avoidance component (5); when the outer shell (3) rotates to avoid the fixed wheel (4), the positioning component (6) forms a swing limit constraint inside the avoidance component (5), and releases the swing limit constraint to continue avoiding the weeding component (8) when it continues to be obstructed; The avoidance component (5) includes: An arc-shaped groove (501) is formed on the outer surface of the fixed wheel (4); A positioning groove (502) is provided at one end of an arc-shaped groove (501); The clearance groove (503) is located in the middle of the arc groove (501) and is connected to the arc groove (501). The depth dimension of the clearance groove (503) is smaller than the depth dimension of the positioning groove (502). The positioning component (6) includes: A movable block (601) is slidably disposed on the top of the outer shell (3), and a pressure chamber (602) is provided in the middle of the movable block (601). Positioning block (603), the positioning block (603) is fixedly connected to one side of the middle part of the moving block (601), and one side of the positioning block (603) is inclined; A positioning bolt (604) is threadedly connected to the middle of the moving block (601); A jacking spring (605) is sleeved on the outer surface of the positioning bolt (604).

2. The weeding device with an elastic independent suspension adaptive contouring mechanism according to claim 1, characterized in that, The elastic component (7) includes: A fixing post (701) is fixedly connected to the outer shell (3); A lifting sleeve (702) is sleeved on the end of a fixed column (701), and the cross-sectional profile of the lifting sleeve (702) is set as an outer square and an inner circle; Outer ring (703), the outer ring (703) is fixedly connected to the end of the lifting sleeve (702); A buffer spring (704) is sleeved on the outer surface of the fixed post (701); The base frame (705) is fixedly connected to the bottom of the lifting sleeve (702).

3. The weeding device with an elastic independent suspension adaptive contouring mechanism according to claim 2, characterized in that, The weeding component (8) includes: The base frame (705) has two rotatable contour wheels (801). The weeding shovel (802) is fixedly connected to the bottom end of the base frame (705) and is located in the middle between two contour wheels (801).

4. The weeding device with an elastic independent suspension adaptive contouring mechanism according to claim 2, characterized in that, The extrusion assembly (9) includes: A connecting rod (901) is fixedly connected to one side of the outer ring (703); The extrusion block (902) is fixedly connected to the end of the connecting rod (901), and the outer contour of the extrusion block (902) is wedge-shaped.

5. The weeding device with an elastic independent suspension adaptive contouring mechanism according to claim 4, characterized in that, A bracket (2) is connected between the fixed wheel (4) and the crossbeam arm (1), and the outer shell (3) includes: The outer shell plate (301) is rotatably connected to the outside of the fixed wheel (4), and a protruding cavity (302) is provided on one side of the top of the outer shell plate (301). Side plate (303), the side plate (303) is connected to one side of the outer shell plate (301), and a top plate (304) is fixedly connected to one side of the top of the side plate (303).

6. The weeding device with an elastic independent suspension adaptive contouring mechanism according to claim 5, characterized in that, The support (2) includes: U-shaped frame (201), the U-shaped frame (201) is fixedly connected to the bottom of the crossbeam arm (1); Support rod (202), which is fixedly connected to the bottom of U-shaped frame (201), and one end of support rod (202) is fixedly connected to one side of fixed wheel (4).

7. The weeding device with an elastically independent suspension adaptive contouring mechanism according to claim 6, characterized in that, The fixed column (701) is fixedly connected to the bottom of the top plate (304), and the lifting sleeve (702) is inserted into the bottom of the outer shell plate (301).

8. The weeding device with an elastic independent suspension adaptive contouring mechanism according to claim 5, characterized in that, The movable distance of the moving block (601) is configured such that the positioning block (603) can exit the positioning groove (502), and the positioning block (603) still extends into the arc groove (501) or the clearance groove (503); the position of the pressing block (902) corresponds to the position of the pressure chamber (602), and the pressing block (902) can extend into the pressure chamber (602) and push the moving block (601) to move when the lifting sleeve (702) rises.

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