A wheel steering mechanism and a compost turner having the same

Abstract

This utility model discloses a wheel steering mechanism and a compost turner having the steering mechanism, including a connecting component and a wheel component. The wheel component is rotatably connected to the connecting component via a steering shaft to achieve steering of the wheel component. The connecting component is provided with a steering drive. The steering drive is connected to the steering shaft and can drive the steering shaft to rotate. A positioning mechanism is provided between the steering shaft and the connecting component. The positioning mechanism can be locked in a first position state and a second position state, and the positioning mechanism can switch between the first position state and the second position state by rotating the steering shaft. When the positioning mechanism is locked in the first position state, the wheel component faces the first rolling direction. When the positioning mechanism is locked in the second position state, the rolling direction of the wheel component faces the second rolling direction. The first rolling direction and the second rolling direction form an angle. This allows the compost turner to adapt to the mobility needs of different operating scenarios such as road transportation and compost turning operations.

Description

Technical Field

[0001] This utility model relates to the field of compost turning machine technology, specifically to a wheel steering mechanism and a compost turning machine having the steering mechanism. Background Technology

[0002] Composting refers to the process of crushing straw or household waste, mixing it with a composting agent, and then fermenting and decomposing it under high temperature and humidity conditions to produce an organic fertilizer. Currently, it is typically done by piling the compost into long heaps in the field and then using a compost turner to turn it over periodically.

[0003] In the prior art, invention patent with publication number ZL201410195150.2 discloses an AC servo direct drive type compost turning machine, including a rotary rake device, a turning shaft lifting device, and a walking device. The walking device is driven by a hub motor to realize the forward and backward movement of the turning machine; the rotary rake device is driven by a servo motor to rotate the turning shaft to realize the turning of compost; the turning shaft lifting device is installed on one side of the turning shaft and realizes the lifting and lowering of the turning shaft through another servo motor and ball screw transmission.

[0004] The compost turner provided by the aforementioned patent primarily uses a servo motor instead of a diesel engine for direct drive, reducing the number of transmission parts and lowering power consumption. In actual use, compost turners primarily operate in two ways: one is during turning operations, requiring forward and backward movement along the compost pile; the other is when changing compost piles or transporting them by road, requiring the wheels to rotate 90° compared to turning operations. However, existing compost turners, including the one provided by the aforementioned patent, lack a steering mechanism capable of accurately controlling the wheels to turn 90°, making them unsuitable for adapting to the movement needs of different operational scenarios such as road transport and turning operations. Utility Model Content

[0005] The purpose of this utility model is to provide a wheel steering mechanism and a compost turner with the steering mechanism, in order to improve the problem that the existing compost turner does not have a steering mechanism that can accurately control the wheel steering by 90°, which makes it difficult to adapt to the mobility needs of different operating scenarios such as road transportation and turning operations.

[0006] This utility model is implemented as follows:

[0007] According to a first aspect of the present invention, the present invention provides a wheel steering mechanism, including a connecting assembly and a wheel assembly, wherein the wheel assembly is rotatably connected to the connecting assembly via a steering shaft to achieve steering of the wheel assembly;

[0008] The connecting component is equipped with a steering drive; the steering drive is connected to the steering shaft and can drive the steering shaft to rotate.

[0009] A positioning mechanism is provided between the steering shaft and the connecting assembly. The positioning mechanism can be locked in a first position state and a second position state, and the positioning mechanism can switch between the first position state and the second position state by rotating the steering shaft.

[0010] When the positioning mechanism is locked in the first position, the wheel assembly faces the first rolling direction; when the positioning mechanism is locked in the second position, the rolling direction of the wheel assembly faces the second rolling direction; the first rolling direction and the second rolling direction form an angle.

[0011] Preferably, the angle between the first rolling direction and the second rolling direction is 90°.

[0012] Preferably, the steering drive includes a worm gear and a worm shaft, the worm gear being coaxially mounted on the steering shaft and rotating synchronously; the worm shaft and the worm gear are meshed together.

[0013] Preferably, the steering drive further includes a steering handle, which includes a connecting arm and a handle portion vertically disposed at one end of the connecting arm, and the other end of the connecting arm is fixedly connected to or detachably connected to a worm gear.

[0014] Preferably, the steering drive further includes a mounting base disposed on the connecting assembly, the worm gear being rotatably mounted in the mounting base via a bearing, the mounting base having an opening on the side facing the worm wheel, and the worm gear and the worm wheel engaging at the opening.

[0015] Preferably, the positioning mechanism includes a positioning arm and a positioning pin. The positioning arm is fixed to the worm gear, and one end extends radially beyond the outer periphery of the worm gear and is provided with a first positioning hole.

[0016] The connecting component is provided with two second positioning holes. When the positioning mechanism is in the first position state, the first positioning hole is opposite to one of the second positioning holes, and the positioning pin can be inserted into the corresponding first positioning hole and second positioning hole to achieve positioning. When the positioning mechanism is in the second position state, the first positioning hole is opposite to the other second positioning hole, and the positioning pin can be inserted into the corresponding first positioning hole and second positioning hole to achieve positioning.

[0017] Preferably, a first positioning sleeve is provided on the positioning arm at the position corresponding to the first positioning hole. The first positioning sleeve is coaxially arranged with the first positioning hole, and the two holes have the same diameter. The connecting component is provided with a second positioning sleeve at the position corresponding to each of the two second positioning holes. The two second positioning sleeves are coaxially arranged with the second positioning hole at the corresponding position, and the hole diameters are the same as those of the second positioning holes.

[0018] Preferably, the wheel assembly includes a wheel frame and a wheel, the wheel being vertically and rotatably mounted on the wheel frame, and the steering shaft being vertically mounted on the upper end of the wheel frame.

[0019] According to a second aspect of this utility model, this utility model provides a compost turning machine, wherein the compost turning machine adopts the above-mentioned wheel steering mechanism.

[0020] Preferably, the compost turner has a frame, and the wheel steering mechanism is connected to the frame via its connecting assembly.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. The wheel steering mechanism for the compost turner provided by this utility model can accurately control the wheel to turn 90° and fix the angle after turning, so that the compost turner can adapt to the mobility needs of different operating scenarios such as road transportation and turning operations.

[0023] 2. The compost turning machine provided by this utility model has a wheel steering mechanism that can accurately control the wheel steering by 90°, enabling the compost turning machine to adapt to the mobility needs of different operating scenarios such as road transportation and turning operations. Attached Figure Description

[0024] Figure 1 This is the front view of the compost turner during lateral movement;

[0025] Figure 2 This is a top view of the compost turner during lateral movement.

[0026] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 This is a side view of the compost turner during lateral movement.

[0028] Figure 5 This is the front view of the wheel drive mechanism mounted on the wheel frame;

[0029] Figure 6 This is the front view of the traction frame when the compost turner is moving laterally;

[0030] Figure 7 This is a top view of the traction frame when the compost turner is moving laterally.

[0031] Figure 8 This is the front view of the compost turner during longitudinal movement;

[0032] Figure 9 This is a top view of the compost turner during longitudinal movement;

[0033] Figure 10 yes Figure 9 Enlarged view of region B in the middle;

[0034] Figure 11 This is a side view of the compost turner during longitudinal movement.

[0035] Figure 12 This is a side view of the wheel drive mechanism mounted on the wheel frame;

[0036] Figure 13 This is a top view of the traction frame when the compost turner is moving longitudinally.

[0037] In the diagram: 1. Wheel frame; 2. Wheel; 3. Frame; 4. Steering shaft; 5. Worm gear; 6. Worm; 7. Steering handle; 8. Mounting seat; 9. Positioning arm; 10. Second positioning sleeve; 11. First positioning sleeve; 12. Roller; 13. Tilting blade; 14. Bearing seat; 15. Short shaft; 16. Mounting plate; 17. Guide rail; 18. Hydraulic cylinder; 19. Gearbox; 20. Universal joint assembly; 21. Driven gear; 22. Hydraulic motor; 23. Lever handle; 24. Motor seat; 25. Connecting frame; 26. Hinge seat; 27. Fixed seat; 28. Support rod; 29. ​​Arc-shaped support plate; 30. Traction mechanism; 31. Base; 32. Connecting block; 33. Traction frame; 34. Traction ring; 35. Fixing pin; 36. First limiting hole; 37. Guide rod; 38. Push plate. Detailed Implementation

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0040] Example 1

[0041] like Figures 1-4 , Figures 8-11As shown, this embodiment provides a wheel steering mechanism, including a connecting assembly and a wheel assembly. The connecting assembly has a steel frame structure and is used to connect to the frame 3 of a compost turner. The wheel assembly includes a wheel frame 1 and a wheel 2. The wheel 2 is vertically and rotatably mounted on the wheel frame 1. A steering shaft 4 is vertically mounted on the upper end of the wheel frame 1 and rotates synchronously with the wheel frame 1. The wheel assembly is rotatably connected to the connecting assembly via the steering shaft 4. The connecting assembly is provided with a steering drive and a positioning mechanism. The positioning mechanism can be locked in a first position state and a second position state, and the positioning mechanism can switch between the first position state and the second position state via the rotation of the steering shaft 4. The steering drive includes a worm gear 5, a worm 6, a steering handle 7, and a mounting base 8. The worm gear 5 is mounted on the steering shaft 4 and the two are connected by a key to achieve synchronous rotation. The mounting base 8 is mounted on the frame 3. The worm 6 is rotatably mounted in the mounting base 8 via a bearing. The mounting base 8 has an opening on the side facing the worm gear 5. The worm 6 and the worm gear 5 mesh at the opening, and the worm 6 is also connected to the steering handle 7. Thus, turning the steering handle 7 can drive the steering shaft 4 to rotate through the meshing transmission of the worm gear 6 and the worm wheel 5, thereby realizing the steering adjustment of the wheel frame 1 and the wheel 2.

[0042] like Figure 3 and Figure 10 As shown, the positioning mechanism includes a positioning arm 9, a positioning pin, and two second positioning holes 10 on the connecting assembly. The positioning arm 9 is fixed to the side of the worm gear 5 by four bolts, so that the positioning arm 9, the worm gear 5, and the steering shaft 4 rotate synchronously. One end of the positioning arm 9 extends radially beyond the outer circumference of the worm gear 5 and has a first positioning hole 11. When the positioning mechanism is in the first position, the first positioning hole 11 is opposite to one of the second positioning holes 10, and the positioning pin can be inserted into the corresponding first positioning hole 11 and second positioning hole 10 to achieve positioning. When the positioning mechanism is in the second position, the first positioning hole 11 is opposite to the other second positioning hole 10, and the positioning pin can be inserted into the corresponding first positioning hole 11 and second positioning hole 10 to achieve positioning. A first positioning sleeve is provided on the positioning arm 9 at the position corresponding to the first positioning hole 11. The first positioning sleeve is coaxially arranged with the first positioning hole 11, and the two holes have the same diameter. The connecting component is provided with a second positioning sleeve at each of the two second positioning holes 10. The two second positioning sleeves are coaxially arranged with the corresponding second positioning holes 10, and the hole diameters are the same as those of the second positioning holes 10. When the positioning pin is inserted into the corresponding first positioning hole 11 and second positioning hole 10, it is simultaneously inserted into the corresponding first positioning sleeve and second positioning sleeve.

[0043] like Figures 8-11 As shown, at this time, the first positioning sleeve and the second positioning sleeve are aligned vertically. Inserting the positioning pin into the aligned first and second positioning sleeves can fix the steering shaft 4 and prevent it from rotating. This is the first position state of the positioning mechanism. The rolling direction of the wheel 2 is longitudinal, which is consistent with the forward direction of the compost turner during the turner operation.

[0044] like Figures 1-4 As shown, at this time, the first positioning sleeve and the other second positioning sleeve are aligned vertically. Inserting the positioning pin into the aligned first and second positioning sleeves can fix the steering shaft 4 and prevent it from rotating. This is the second position state of the positioning mechanism. At this time, the rolling direction of the wheel 2 is horizontal, that is, it forms a 90° angle with the forward direction of the compost turner during the turner operation.

[0045] Therefore, the wheel steering mechanism for the compost turner provided by this utility model can accurately control the wheel to turn 90° and fix the angle after turning, so that the compost turner can adapt to the mobility needs of different operating scenarios such as road transportation and turning operations.

[0046] Example 2

[0047] like Figure 1 , Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 11 As shown, this embodiment provides a compost turning machine. Two wheel steering mechanisms, as described in Embodiment 1, are provided at each end of the frame 3, allowing all four wheels 2 to be accurately controlled to turn 90°. The frame 3 has a gantry frame, within which a roller 12 is rotatably mounted. Multiple turning blades 13 are mounted on the roller 12, curving towards the center of the roller 12 to gather the compost towards the center during turning. Additionally, baffles are provided on both sides of the gantry frame to further gather the compost towards the center. A pusher plate 38, which can move up and down and is fixed, is also provided on the gantry frame. The pusher plate 38 is V-shaped and located behind the roller 12. During turning, the pusher plate 38 can create a trench in the turned compost pile, into which liquid organic matter (such as manure) can be added. The pusher plate 38 can be raised and lowered via a hydraulic cylinder, lowered only when in use to create the trench. Furthermore, a pipe for adding liquid organic matter can be fixed to the pusher plate 38.

[0048] like Figure 1 , Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 11As shown, each end of the roller 12 is provided with a mounting plate 16, which is vertically arranged. Two sets of guide rails 17 are provided on the gantry frame corresponding to the two mounting plates 16, and the two mounting plates 16 are slidably connected to the two sets of guide rails 17 respectively. Two hydraulic cylinders 18 are also provided on the gantry frame corresponding to the two mounting plates 16, and the piston rods of the two hydraulic cylinders 18 are connected to the two mounting plates 16 respectively, driving the mounting plates 16 to move up and down. Bearing seats 14 are mounted on the mounting plates 16, and each end of the roller 12 is connected to a short shaft 15 with a common central axis. The two short shafts 15 are respectively installed in the two bearing seats 14 on the two mounting plates 16. A gearbox 19 is also provided on the frame 3, and the output shaft of the gearbox 19 is connected to one of the short shafts 15 through a universal joint assembly 20. Universal joint assembly 20 includes a connecting shaft and two universal joints disposed at both ends of the connecting shaft. One universal joint is connected to the output shaft of gearbox 19 and one end of the connecting shaft, and the other universal joint is connected to the short shaft 15 and the other end of the connecting shaft.

[0049] With the above setup, the input end of the gearbox 19 is connected to the power source of the tractor. The tractor can then drive the universal joint assembly 20 to rotate via the gearbox 19, which in turn drives the short shaft 15 and the drum 12 to rotate, enabling the turning operation. The hydraulic cylinder 18 can move the drum 12 up and down, thereby adjusting the working height of the drum 12 and the turning blades 13 to adapt to different thicknesses of compost piles and ensure the effectiveness of the turning operation.

[0050] like Figure 1 , Figure 5 , Figure 8 and Figure 12As shown, at one end of the frame 3, two wheel frames 1 are fitted with wheels 2 of larger diameter, while two wheel frames 1 are fitted with wheels 2 of smaller diameter. This end is also equipped with a traction mechanism 30 for connection to a tractor. A driven gear 21 is fixedly mounted on the wheel body of the larger diameter wheel 2, sharing a central axis with the wheel 2. The wheel frame 1 on which the wheel 2 is mounted has a guide rod 37 and a motor mount 24. The motor mount 24 has a guide hole adapted to the guide rod 37, through which the guide rod 37 passes. A hydraulic motor 22 is mounted on the motor mount 24, and a drive gear adapted to the driven gear 21 is mounted on the output shaft of the hydraulic motor 22. A hinge seat 26 is mounted on the wheel frame 1, located above the hydraulic motor 22. A lever handle 23 is hinged to the hinge seat 26, and a connecting frame 25 is hinged to the motor mount 24. The lower end of the lever handle 23 is connected to the connecting frame 25. This allows the lever handle 23 to move the hydraulic motor 22 toward or away from the driven gear 21, thereby engaging or disengaging the driving gear and the driven gear 21. When the driving gear and the driven gear 21 are engaged, the hydraulic motor 22 is connected to the hydraulic system of the tractor, thus driving the wheels 2 to rotate.

[0051] like Figure 5 As shown, the lever handle 23 is hinged to the hinge seat 26 via a hinge shaft. The distance between the upper end of the lever handle 23 and the hinge shaft is L1, and the distance between the lower end of the lever handle 23 and the hinge shaft is L2, where L1 > 4L2. This configuration utilizes the lever principle to significantly reduce the force required to operate the lever handle 23, allowing the operator to move the hydraulic motor 22 more easily via the lever handle 23, thereby facilitating the engagement or disengagement of the driving gear and the driven gear 21.

[0052] like Figure 5 and Figure 12 As shown, a fixing mechanism is provided on the wheel frame 1. The fixing mechanism includes a fixed seat 27 and a support rod 28. The fixed seat 27 is fixedly mounted on the wheel frame 1. One end of the support rod 28 is hinged to the fixed seat 27, and the other end is provided with an arc-shaped support plate 29. Rotating the support rod 28 can bring the arc-shaped support plate 29 into contact with the outer wall of the lever handle 23. When the driving gear and the driven gear 21 are meshed, the support rod 28 is inclined downward from the hinged end towards the other end. This downward inclination can provide stable support for the lever handle 23 using the support rod 28, effectively preventing the lever handle 23 from shifting due to vibration or other factors when the driving gear and the driven gear 21 are meshing, thus ensuring the stability of the transmission structure.

[0053] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 13 As shown, the traction mechanism 30 includes a fixed part and a traction part. The fixed part is a base 31, which is used to connect to the frame 3. The traction part includes a connecting block 32 and a traction frame 33. The horizontal component of the length direction of the traction frame 33 is the extension direction of the traction part. A horizontally rotatable connecting block 32 is hinged to the base 31, and a vertically rotatable traction frame 33 is hinged to the connecting block 32. A traction ring 34 is provided at the end of the traction frame 33 away from the connecting block 32. The fixed part and the traction part are provided with a locking structure. The locking structure includes two first limiting holes 36 provided on the base 31, a second limiting hole provided on the connecting block 32, and a fixing pin 35. Rotating the connecting block 32 can make the second limiting hole and the two first limiting holes 36 vertically aligned respectively. The fixing pin 35 is used to insert into the aligned first limiting holes 36 and second limiting holes to lock the extension direction of the traction part. When the second limiting hole aligns with one of the first limiting holes 36, the extension direction of the traction frame 33 is longitudinal, consistent with the forward direction of the compost turner during turning operations. When the second limiting hole aligns with the other first limiting hole 36, the extension direction of the traction frame 33 is transverse. This configuration allows the traction frame 33 to flexibly adjust its direction according to different operating conditions of the compost turner, ensuring that the connection between the traction ring 34 and the traction tractor always maintains a reasonable angle. Simultaneously, by inserting the fixing pin 35 into the aligned limiting hole, the position of the traction frame 33 can be securely locked, ensuring the safety and stability of the traction process.

[0054] When the compost turner is performing the turning operation, such as Figure 8 and Figure 9 As shown, this is the first position of the positioning mechanism. One end of the tractor is connected to the traction mechanism 30, and the hydraulic motor 22 is connected to the hydraulic system of the tractor. The driving gear and the driven gear 21 are engaged. The hydraulic motor 22 drives the wheels 2 to rotate, which, in conjunction with the traction power of the tractor, drives the compost turner to move steadily forward.

[0055] When a compost turner moves on a road, such as Figure 1 and Figure 2 As shown, one end of the tractor is connected to the traction mechanism 30, the drive gear and the driven gear 21 are in a separated state, and the wheel 2 rolls only by the traction of the tractor to meet the needs of road movement and ensure smooth and safe movement.

[0056] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wheel steering mechanism, characterized in that, It includes a connecting component and a wheel assembly, wherein the wheel assembly is rotatably connected to the connecting component via a steering shaft (4) to enable the wheel assembly to steer; The connecting component is provided with a steering drive; the steering drive is connected to the steering shaft (4) and can drive the steering shaft (4) to rotate; A positioning mechanism is provided between the steering shaft (4) and the connecting assembly. The positioning mechanism can be locked in a first position state and a second position state, and the positioning mechanism can switch between the first position state and the second position state by rotating the steering shaft (4). When the positioning mechanism is locked in the first position, the wheel assembly faces the first rolling direction; when the positioning mechanism is locked in the second position, the rolling direction of the wheel assembly faces the second rolling direction; the first rolling direction and the second rolling direction form an angle.

2. The wheel steering mechanism according to claim 1, characterized in that, The angle between the first rolling direction and the second rolling direction is 90°.

3. A wheel steering mechanism according to claim 1, characterized in that, The steering drive includes a worm wheel (5) and a worm (6). The worm wheel (5) is coaxially mounted on the steering shaft (4) and the two rotate synchronously. The worm (6) and the worm wheel (5) are meshed together.

4. A wheel steering mechanism according to claim 3, characterized in that, The steering drive also includes a steering handle (7), which includes a connecting arm and a handle portion vertically disposed at one end of the connecting arm. The other end of the connecting arm is fixedly connected to or detachably connected to the worm gear (6).

5. A wheel steering mechanism according to claim 3, characterized in that, The steering drive also includes a mounting base (8) disposed on the connecting assembly. The worm (6) is rotatably mounted in the mounting base (8) via a bearing. The mounting base (8) has an opening on the side facing the worm wheel (5). The worm (6) and the worm wheel (5) mesh at the opening.

6. A wheel steering mechanism according to claim 5, characterized in that, The positioning mechanism includes a positioning arm (9) and a positioning pin. The positioning arm (9) is fixed to the worm wheel (5), and one end extends radially beyond the outer periphery of the worm wheel (5) and is provided with a first positioning hole (11). The connecting component is provided with two second positioning holes (10). When the positioning mechanism is in the first position state, the first positioning hole (11) is opposite to one of the second positioning holes (10), and the positioning pin can be inserted into the corresponding first positioning hole (11) and second positioning hole (10) to achieve positioning. When the positioning mechanism is in the second position state, the first positioning hole (11) is opposite to the other second positioning hole (10), and the positioning pin can be inserted into the corresponding first positioning hole (11) and second positioning hole (10) to achieve positioning.

7. A wheel steering mechanism according to claim 6, characterized in that, The positioning arm (9) is provided with a first positioning sleeve at the position corresponding to the first positioning hole (11). The first positioning sleeve is coaxially arranged with the first positioning hole (11) and the two holes have the same diameter. The connecting component is provided with a second positioning sleeve at the position corresponding to the two second positioning holes (10). The two second positioning sleeves are coaxially arranged with the corresponding second positioning holes (10) and the hole diameters are the same as the second positioning holes (10).

8. A wheel steering mechanism according to claim 1, characterized in that, The wheel assembly includes a wheel frame (1) and a wheel (2), the wheel (2) being vertically and rotatably mounted on the wheel frame (1), and the steering shaft (4) being vertically mounted on the upper end of the wheel frame (1).

9. A compost turning machine, characterized in that, The compost turner uses the wheel steering mechanism described in any one of claims 1-8.

10. A compost turning machine according to claim 9, characterized in that, The compost turner has a frame (3), and the wheel steering mechanism is connected to the frame (3) via its connecting components.

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