A frame wheel seat for a weeding machine

Abstract

The utility model relates to the technical field of weeding machine, concretely relates to a vehicle frame wheel seat for weeding machine, including vehicle frame main part, the below of vehicle frame main part is provided with two wheel seat main bodies, is fixedly installed with the wheel on the wheel seat main body, the one end of wheel seat main body is remotely connected with the branch pipe of wheel seat main body, the inside screw thread connection of branch pipe has screw rod, is provided with the drive mechanism for driving two wheel seat main bodies to be displaced to each other between vehicle frame main part and screw rod. Two wheel seat main bodies are driven to realize the movement to each other through the drive mechanism, and the interval between two wheel seat main bodies is adjusted, make weeding machine can be in the different scene switching operation of pasture planting area, shrub cultivation area, mixed grassland etc.

Description

Technical Field

[0001] This utility model relates to the field of weeding machine technology, specifically to a wheel seat for a weeding machine frame. Background Technology

[0002] The wheel mount is a component on a lawnmower used to connect the wheels to the lawnmower frame. It is mainly used to support and mount the wheels, enabling the lawnmower to move stably on different terrains. It can firmly support the wheels and ensure their stability. The wheel mount allows the lawnmower to rotate and move flexibly, improving its maneuverability in complex environments. The wheel mount also helps to maintain the overall balance of the lawnmower, preventing the machine from tilting or shaking during driving or use.

[0003] Chinese Patent Publication No. CN109697721A discloses a protective ditching and weeding machine, comprising: a ditching and weeding structure including a muffler, a filter, a gear control switch, a clutch, a turning control device, a chassis, a weeding body, a diesel engine, a hand support, a handle, and a hand-cranked starter; the muffler and filter are arranged side by side, the gear control switch is located on the handle, and the bottom of the handle is connected to the top of the hand support; the hand-cranked starter is located on the diesel engine, and the chassis is located below the hand-cranked starter; the clutch and the turning control device are arranged side by side and are both located at the top of the handle; a speed correction device is connected to the tree identification device and the diesel engine respectively, and is used to correct the real-time speed of the diesel engine based on the reference target depth of field when the reference target depth of field is less than or equal to a preset depth of field threshold, so that the smaller the reference target depth of field, the lower the real-time speed. This invention can effectively avoid damage to various tree objects in the grassland during ditching and weeding.

[0004] The aforementioned patent proposes that the weeder carries the diesel engine, weeding body and other components on the chassis, with the wheels directly mounted on both sides of the chassis. Since the wheel seats of general weeders are mostly bolted or welded structures with fixed wheel spacing, and the row spacing of crops such as grass and shrubs varies greatly in grassland operations, fixed-spacing wheel seats can easily cause the wheels to crush vegetation in non-weeding areas. At the same time, it cannot adapt to weeding operations between crops with narrow row spacing, affecting grassland yield. Therefore, we propose a frame wheel seat for a weeder. Utility Model Content

[0005] To address the aforementioned issues, a wheel seat for a weeding machine is provided. A drive mechanism moves two wheel seat bodies in opposite directions, allowing adjustment of the distance between them. This enables the weeding machine to switch between different operating environments, such as pasture planting areas, shrub cultivation areas, and mixed pastures, effectively protecting the integrity of grassland vegetation and ensuring grassland yield. This solves the technical problems of fixed-space wheel seats, which easily cause wheels to crush vegetation in non-weeding areas and are unsuitable for weeding operations between narrow-row crops, thus affecting grassland yield.

[0006] To address the existing technical problems, this utility model provides a wheel seat for a weed cutter frame, including a frame body, two wheel seat bodies are arranged below the frame body, wheels are fixedly installed on the wheel seat bodies, and a branch pipe is detachably connected to the end of the wheel seat body away from the wheel; a screw is threadedly connected to the inner side of the branch pipe; a drive mechanism for driving the two wheel seat bodies to move towards each other is provided between the frame body and the screw.

[0007] Preferably, the screws mounted on the two wheel seats have opposite external thread directions, specifically, one screw has a right-hand thread and the other screw has a left-hand thread.

[0008] Preferably, the drive mechanism includes a power component and a dustproof component; the power component is fixedly installed on the lower side of the frame body and is used to provide power for the displacement of the wheel seat body; the dustproof component is sleeved on the end of the screw near the power component, and the two ends of the dustproof component are fixedly connected to the branch pipe and the power component respectively.

[0009] Preferably, the drive mechanism further includes a guide assembly and a stop assembly; the guide assembly is disposed between the frame body and the wheel seat body, and the guide assembly is used to assist the wheel seat body in achieving linear movement; the stop assembly is disposed between the frame body and the guide assembly, and the stop assembly is used to lock the position of the wheel seat body after displacement adjustment.

[0010] Preferably, the guiding assembly includes a guide seat and a guide rail; the guide seat is detachably connected to the wheel seat body; the guide rail is detachably connected to the side of the frame body near the guide seat, and the guide rail and the guide seat slide together.

[0011] Preferably, the stopping assembly includes a pawl and a ratchet plate; the pawl is disposed on one side of the guide seat, a support plate is fixedly connected to the guide seat, the pawl is rotatably connected to the support plate, and an unlocking lever is fixedly installed on the side of the pawl away from the frame body 1; the ratchet plate is fixedly connected to the side of the frame body near the pawl, and the ratchet plate is inserted into the pawl.

[0012] Preferably, an elastic reset member is provided on one side of the pawl, and the two ends of the elastic reset member are fixedly connected to the pawl and the support plate, respectively.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. The drive mechanism moves the two wheel seats in opposite directions, allowing the spacing between them to be adjusted. This enables the weeder to switch between different scenarios, such as pasture planting areas, shrub cultivation areas, and mixed pastures, effectively protecting the integrity of grassland vegetation and ensuring grassland yield. It solves the technical problem that fixed-spacing wheel seats can easily cause the wheels to crush vegetation in non-weeding areas, and cannot adapt to weeding operations between narrow-row crops, thus affecting grassland yield.

[0015] 2. By releasing elastic potential energy through the elastic reset component, the pawl is reset and locked into the tooth groove of the ratchet plate, thereby locking the wheel spacing. This solves the technical problem that after the wheel spacing of the weeder is adjusted, the main body of the wheel seat is prone to displacement due to bumps and vibrations during operation, uneven ground, or external interference, which affects the driving stability of the weeder. Attached Figure Description

[0016] Figure 1 This utility model application provides a three-dimensional schematic diagram of the frame body and wheel seat body of a weeding machine.

[0017] Figure 2 This utility model application presents a three-dimensional schematic diagram of the power component and guide seat of the wheel seat of a weeding machine frame.

[0018] Figure 3 yes Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 4 yes Figure 1 Enlarged diagram of point B in the middle.

[0020] Figure 5 yes Figure 2 Enlarged diagram of point C in the middle.

[0021] Figure 6 yes Figure 2 Enlarged diagram of point D in the middle.

[0022] The components in the diagram are labeled as follows: 1. Main frame; 11. Wheel seat main body; 12. Wheel; 2. Branch pipe; 21. Screw; 22. Power component; 201. Dustproof component; 23. Guide seat; 24. Guide rail; 25. Pawl; 26. Ratchet plate; 27. Elastic reset component. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] See Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, a wheel hub for a weeding machine includes a frame body 1, with two wheel hub bodies 11 disposed below the frame body 1. Wheels 12 are fixedly mounted on the wheel hub bodies 11, and a branch pipe 2 is detachably connected to the end of the wheel hub body 11 away from the wheel 12. A screw 21 is threadedly connected to the inner side of the branch pipe 2. A drive mechanism for driving the two wheel hub bodies 11 to move in opposite directions is provided between the frame body 1 and the screw 21. The screws 21 mounted on the two wheel hub bodies 11 have opposite external thread directions, specifically, one screw 21 has a right-hand thread and the other has a left-hand thread. The drive mechanism includes a power component 22 and a dustproof component 201. The power component 22 is fixedly mounted on the lower side of the frame body 1 and provides power for the displacement of the wheel hub bodies 11. The dustproof component 201 is sleeved on the end of the screw 21 near the power component 22, and both ends of the dustproof component 201 are fixedly connected to the branch pipe 2 and the power component 22, respectively.

[0025] Specifically, the power component 22 is preferably a dual-axis servo motor. The dustproof component 201 is preferably a deformable foldable corrugated cover.

[0026] When the wheel 12 travel distance is adjusted by the frame wheel seat, the power unit 22 is activated. The output end of the power unit 22 drives the screw 21 to rotate around its axis. The movement trajectory of the wheel seat body 11 is limited by the guide component. The guide component assists the wheel seat body 11 to achieve linear movement, while restricting the branch pipe 2 to rotate synchronously with the screw 21, ensuring that the branch pipe 2 only makes axial displacement in the preset direction.

[0027] Since the branch pipe 2 is threadedly connected to the screw 21, and the external threads of the two screws 21 turn in opposite directions, the rotational motion of the screw 21 is converted into the opposite movement of the two branch pipes 2. During this process, the branch pipe 2 synchronously pulls the dustproof component 201 to extend. The dustproof component 201 can wrap around the outer area of ​​the screw 21, isolate external dust, weeds and other foreign objects, prevent foreign objects from entering the threaded engagement and interfering with the rotation of the screw 21, and ensure the stable operation of the transmission structure.

[0028] Branch pipe 2 drives the wheel seat body 11 to move synchronously, realizing the adjustment of the distance between the two wheels 12. When the working area is a narrow-row crop, the wheel seat bodies 11 move towards each other to reduce the distance, ensuring that the traveling wheels only travel along the crop rows and avoid crushing the crops. When the working area is a wide-row crop, the wheel seat bodies 11 move in the opposite direction to widen the distance, preventing the traveling wheels from sinking into the crop root area. This can effectively protect the integrity of grassland vegetation, ensure grassland yield, and at the same time enable the weeder to flexibly switch between different working scenarios such as pasture planting areas, shrub cultivation areas, and mixed grasslands, improving the equipment's adaptability.

[0029] See Figures 1-3As shown, the drive mechanism also includes a guide assembly and a stop assembly; the guide assembly is disposed between the frame body 1 and the wheel seat body 11, and the guide assembly is used to assist the wheel seat body 11 in achieving linear movement; the stop assembly is disposed between the frame body 1 and the guide assembly, and the stop assembly is used to lock the position of the wheel seat body 11 after displacement adjustment; the guide assembly includes a guide seat 23 and a guide rail 24; the guide seat 23 is detachably connected to the wheel seat body 11; the guide rail 24 is detachably connected to the side of the frame body 1 near the guide seat 23, and the guide rail 24 and the guide seat 23 slide in cooperation.

[0030] Specifically, the guide seat 23 and the guide rail 24 form a sliding guide pair.

[0031] When the output end of the power component 22 drives the screw 21 to rotate inside the branch pipe 2, the guide seat 23 and the guide rail 24 form a sliding guide pair. This sliding guide pair can restrict the circumferential rotation of the branch pipe 2 and prevent the branch pipe 2 from driving the wheel seat body 11 to rotate synchronously with the screw 21. Under this constraint, the threaded engagement between the branch pipe 2 and the screw 21 converts the rotational motion of the screw 21 into a smooth sliding motion of the branch pipe 2 along the axial direction of the screw 21. The branch pipe 2 pushes the wheel seat body 11 to move synchronously through a rigid connection.

[0032] During the displacement of the wheel seat body 11, the guide seat 23 is driven to move in a straight line along the guide rail 24. The guide rail 24 precisely limits the movement trajectory of the guide seat 23, further ensuring that the wheel seat body 11 maintains a stable posture during the displacement process, avoiding deviation caused by unilateral force or vibration, and ensuring the accuracy and reliability of the wheel 12 spacing adjustment.

[0033] See Figure 2 and Figure 5 As shown, the stop assembly includes a pawl 25 and a ratchet plate 26; the pawl 25 is disposed on one side of the guide seat 23, and a support plate is fixedly connected to the guide seat 23. The pawl 25 is rotatably connected to the support plate, and an unlocking lever is fixedly installed on the side of the pawl 25 away from the frame body 1; the ratchet plate 26 is fixedly connected to the side of the frame body 1 near the pawl 25, and the ratchet plate 26 is inserted into the pawl 25; an elastic reset member 27 is disposed on one side of the pawl 25, and the two ends of the elastic reset member 27 are fixedly connected to the pawl 25 and the support plate, respectively.

[0034] Specifically, the elastic reset element 27 is preferably a spring.

[0035] When the guide seat 23 moves linearly along the guide rail 24, it simultaneously drives the support plate to move along the extension direction of the guide rail 24. The support plate drives the pawl 25 to slide along the surface of the ratchet plate 26 through a rigid connection. During this process, the inclined surface of the pawl 25 forms a pressing contact with the inclined surface of the ratchet plate 26. The pressing force causes the pawl 25 to deflect around its own hinge point, avoiding rigid interference between the pawl 25 and the ratchet plate 26, and ensuring that the guide seat 23 can move smoothly along the guide rail 24 without jamming.

[0036] When the guide seat 23 stops moving, the elastic reset member 27 releases its elastic potential energy, pushing the pawl 25 to reset and engage in the tooth groove of the ratchet plate 26. The mechanical meshing structure restricts the axial displacement of the guide seat 23, thereby locking the wheel 12 spacing. When it is necessary to adjust the guide seat 23 to move in the opposite direction, the unlocking lever of the pawl 25 is operated. The driving force generated by the unlocking lever keeps the pawl 25 in a deflected state, ensuring that the pawl 25 is completely disengaged from the ratchet plate 26. At this time, the guide seat 23 can move in the opposite direction along the guide rail 24, synchronously driving the wheel seat body 11 to adjust the wheel 12 spacing.

[0037] After the wheel 12 spacing is adjusted to the target value, the unlock lever of the pawl 25 is closed. The unlock lever releases the constraint on the pawl 25, and the pawl 25 is engaged with the ratchet plate 26 again under the action of the elastic reset member 27. The meshing of the teeth of the pawl 25 and the ratchet plate 26 is adjusted to lock the wheel 12 spacing again, preventing the wheel track from shifting due to vibration during operation.

[0038] Working principle: When the wheel 12 travel distance is adjusted, the power unit 22 is activated. The output end of the power unit 22 drives the screw 21 to rotate. At this time, the guide seat 23 and the guide rail 24 form a sliding guide pair, causing the branch pipe 2 to slide along the screw 21. At the same time, the wheel seat body 11 is pushed to move synchronously. When the guide seat 23 moves linearly along the guide rail 24, the support plate drives the pawl 25 to slide along the surface of the ratchet plate 26. When the guide seat 23 stops moving, the elastic reset member 27 pushes the pawl 25 to reset and lock it into the tooth groove of the ratchet plate 26, thereby locking the wheel 12 distance.

[0039] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A wheel seat for a weeding machine, comprising a frame body (1), two wheel seat bodies (11) disposed below the frame body (1), and wheels (12) fixedly mounted on the wheel seat bodies (11), characterized in that, A branch pipe (2) is detachably connected to one end of the wheel seat body (11) away from the wheel (12); The inner side of the branch pipe (2) is threaded with a screw (21); A drive mechanism for driving the two wheel seat bodies (11) to move in opposite directions is provided between the frame body (1) and the screw (21).

2. The wheel seat for a weeder frame according to claim 1, characterized in that, The screws (21) mounted on the two wheel seat bodies (11) have opposite external thread directions, specifically, one screw (21) is a right-hand thread and the other screw (21) is a left-hand thread.

3. The wheel seat for a weeding machine according to claim 2, characterized in that, The drive mechanism includes a power component (22) and a dustproof component (201); The power unit (22) is fixedly installed on the lower side of the frame body (1), and the power unit (22) is used to provide power for the displacement of the wheel seat body (11); The dustproof component (201) is sleeved on the end of the screw (21) near the power component (22), and the two ends of the dustproof component (201) are fixedly connected to the branch pipe (2) and the power component (22) respectively.

4. The wheel seat for a weeder frame according to claim 2, characterized in that, The drive mechanism also includes guide components and stop components; The guide assembly is disposed between the frame body (1) and the wheel seat body (11), and the guide assembly is used to assist the wheel seat body (11) in achieving linear movement; The stop assembly is located between the frame body (1) and the guide assembly. The stop assembly is used to lock the position of the wheel seat body (11) after displacement adjustment.

5. The wheel seat for a weeder frame according to claim 4, characterized in that, The guiding assembly includes a guide seat (23) and a guide rail (24); The guide seat (23) is detachably connected to the wheel seat body (11); The guide rail (24) is detachably connected to the side of the frame body (1) near the guide seat (23), and the guide rail (24) and the guide seat (23) slide together.

6. The wheel seat for a weeder frame according to claim 4, characterized in that, The stop assembly includes a pawl (25) and a ratchet plate (26); A pawl (25) is provided on one side of the guide seat (23). A support plate is fixedly connected to the guide seat (23). The pawl (25) is rotatably connected to the support plate. An unlock lever is fixedly installed on the side of the pawl (25) away from the frame body (1). The ratchet plate (26) is fixedly connected to the side of the frame body (1) near the pawl (25), and the ratchet plate (26) and the pawl (25) are inserted into each other.

7. The wheel seat for a weeder frame according to claim 6, characterized in that, An elastic reset member (27) is provided on one side of the pawl (25), and the two ends of the elastic reset member (27) are fixedly connected to the pawl (25) and the support plate, respectively.

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