Vehicle moving supporting wheel with steering function

Abstract

The utility model discloses a vehicle moving supporting wheel with a steering function, belongs to the field of vehicle moving supporting wheels, solves the problem that a vehicle mover is easy to automatically steer in the moving process, and adopts the technical scheme that the vehicle moving supporting wheel mainly comprises a rack, a supporting rod positioned at the top end of the rack and a hub rotationally arranged on the rack, a steering mechanism is arranged between the rack and the supporting rod and comprises a worm gear case and a steering driver, the worm gear case is fixed to the top end of the rack, a worm gear and a worm which are meshed with each other are arranged in the worm gear case, the worm is in transmission connection with an output shaft of the steering driver, the worm gear is fixedly connected with the supporting rod, and the supporting rod synchronously rotates along with the worm gear. A self-locking effect can be achieved mainly through matching of the worm gear and the worm, and random steering of the roller is limited.

Description

Technical Field

[0001] This utility model demonstrates a vehicle moving support wheel with steering function, belonging to the technical field of vehicle moving support wheels. Background Technology

[0002] A vehicle mover is a specialized drive unit used to move non-motorized motorhomes, trailers, trailers, or yachts. It allows the vehicle to move even when it lacks its own power source.

[0003] However, traditional electric car movers require the operator to manually operate the handle to control the direction of movement. The weight of the object being moved is usually very large, and manually operating the car mover requires a large amount of external force, making it quite strenuous for the operator. In addition, when the car mover turns on a slope or moves to an uneven surface, it may automatically turn due to the weight of the object being moved, making it impossible for the operator to effectively control the car mover. When the operator holds the handle, they are close to the object being moved, and if the car mover goes out of control, there is a significant safety hazard for the operator. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the car mover is prone to automatic steering during movement. To this end, a car mover support wheel with steering function is provided. Through the cooperation of worm gear and worm, it can achieve a self-locking effect and restrict the wheel hub from turning arbitrarily.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A vehicle support wheel with steering function includes a frame, a support rod at the top of the frame, and a wheel hub rotatably mounted on the frame. A steering mechanism is provided between the frame and the support rod. The steering mechanism includes a worm gear box and a steering drive. The worm gear box is fixed to the top of the frame. The worm gear box contains a worm wheel and a worm that mesh with each other. The worm is driven by the output shaft of the steering drive. The worm wheel is fixedly connected to the support rod, and the support rod rotates synchronously with the worm wheel to achieve relative rotation between the wheel hub and the support rod.

[0007] The beneficial effects of using this utility model are:

[0008] In this invention, a steering mechanism is provided between the support rod and the frame. The steering mechanism includes a worm gear box and a steering drive. The worm gear box contains a worm wheel and a worm. The steering mechanism drives the worm wheel and worm through the rotating drive to achieve relative rotation between the support rod and the hub, thereby turning the vehicle-moving support wheel. This eliminates the need for manual operation, making it easier and less strenuous for the operator. It also allows the operator to maintain a safe distance from the vehicle-moving support wheel and the object being moved, thus improving the safety of the vehicle-moving support wheel. Furthermore, through the transmission of the worm wheel and worm, the steering mechanism can precisely control the relative rotation angle between the support rod and the hub, thereby achieving precise steering of the entire vehicle-moving support wheel. The high level of operator control over the moving support wheels reduces the possibility of collisions with the moved objects. Furthermore, the worm gear and steering actuator are connected by a self-locking transmission mechanism. The steering actuator can control the worm wheel's rotation via the worm gear. When the steering actuator is not working, the support rod cannot control the worm wheel's rotation, thus preventing the moving support wheels from unexpectedly turning. This improves the stability of the moving support wheels during operation and enhances their safety. Secondly, the worm gear transmission system has a relatively simple structure, is easy to disassemble and assemble, and facilitates routine maintenance, which helps extend the service life of the moving support wheels and reduce maintenance costs.

[0009] Preferably, the worm gear box includes an upper box and a lower box that are spliced ​​together, forming a mounting cavity between the upper and lower boxes for the worm wheel and worm to rotate. The bottom end of the support rod extends through the upper box into the mounting cavity and is fixedly connected to the worm wheel. Using the aforementioned technical solution, the splicing of the upper and lower boxes simplifies the assembly process of the worm gear box, making it easier to access internal components during manufacturing and maintenance. When it is necessary to repair or replace components such as the worm wheel and worm, the upper box can be easily disassembled without removing the entire worm gear box from the frame. Furthermore, the direct connection of the support rod to the worm wheel allows for more efficient transmission of steering driving force, reducing steering errors caused by loose connections or wear, and making the steering of the moving support wheel more precise and reliable.

[0010] Preferably, a first reduction mechanism is provided between the worm gear box and the steering drive. The first reduction mechanism has an input end and an output end. The output shaft of the reduction drive extends into the input end and is drivenly connected to the first reduction mechanism. The output end of the first reduction mechanism is driven by the worm gear. Using the aforementioned technical solution, the first reduction mechanism can reduce the output speed of the steering drive while increasing the output torque, making the relative steering of the support rod and the wheel hub smoother and helping to improve the steering stability of the vehicle moving support wheel.

[0011] Preferably, the hub includes a roller and a drive motor and a second reduction mechanism disposed inside the roller. One end of the drive motor extends out of the roller and is fixedly connected to the frame, while the other end is driven by the second reduction mechanism. The second drive motor drives the roller to rotate through the second reduction mechanism. By directly placing the drive motor and the second reduction mechanism inside the roller, the volume occupied by the drive motor and the second reduction mechanism can be significantly reduced, making the equipment more compact and lightweight. Furthermore, the location of the drive motor and the second reduction mechanism inside the roller reduces the possibility of them being subjected to external impacts. The roller provides protection for the drive motor and the second reduction mechanism, helping to extend their service life.

[0012] Preferably, the roller includes a rolling surface in contact with the ground and a first end cap and a second end cap fixed to both sides of the rolling surface. The first end cap is rotatably connected to the housing of the drive motor, and the second end cap is rotatably connected to the frame. A second reduction mechanism is driven by the second end cap, and the drive motor drives the second end cap to rotate through the second reduction mechanism, causing the rolling surface to roll. By using the aforementioned technical solution, the rolling surface is fixed by the first and second end caps and rotatably connected to the drive motor housing and the frame, ensuring the compactness and stability of the overall roller structure. This allows the roller to remain stable during rotation, reducing vibration and noise caused by structural loosening or instability.

[0013] Preferably, the drive motor includes a housing, a stator fixed to the inner wall of the housing, and a rotor that mates with the stator. A convex ring extending axially along the rotor is provided at the end of the housing. The second reduction mechanism is installed within the convex ring, and one end of the rotor extends into the convex ring and is connected to the second reduction mechanism for transmission. By directly installing the second reduction mechanism within the convex ring at the end of the housing, the second reduction mechanism and the drive motor share the same housing, achieving a high degree of integration between the drive motor and the second reduction mechanism. This reduces the size and weight of the drive motor and the second reduction mechanism, making the internal structure of the roller more compact.

[0014] Preferably, the housing includes a connecting seat, with downwardly extending connecting plates on both sides of the connecting seat. The connecting plates are rotatably connected to both sides of the wheel hub, and the connection between the connecting plate and the connecting seat has an inwardly recessed reinforcing rib. Using the aforementioned technical solution, the reinforcing rib can increase the rigidity of the connection between the connecting seat and the connecting plate, thereby increasing the load capacity of the connecting seat, enabling the vehicle support wheel to bear heavier objects, and also reducing the possibility of deformation or damage to the connecting seat.

[0015] Preferably, the support rod includes an inner rod and an outer rod, the outer rod is slidably connected to the inner rod, a lead screw is rotatably connected inside the outer rod, and the end of the inner rod is provided with a nut that cooperates with the lead screw. The lead screw and the nut rotate relative to each other to realize the relative sliding of the inner rod and the outer rod.

[0016] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a vehicle-moving support wheel with steering function according to the present invention;

[0019] Figure 2 This is a cross-sectional view of a car-moving support wheel with steering function according to the present invention. Figure 1 ;

[0020] Figure 3 This is a cross-sectional view of a car-moving support wheel with steering function according to the present invention. Figure 2 ;

[0021] Figure 4 This is a cross-sectional view of the steering mechanism in a vehicle support wheel with steering function according to this utility model.

[0022] Reference numerals: 1. Frame; 11. Connecting seat; 12. Connecting plate; 13. Reinforcing rib; 2. Hub; 21. Rotating surface; 22. First end cover; 23. Second end cover; 24. Drive motor; 241. Housing; 242. Rotor; 243. Stator; 25. Second reduction mechanism; 251. Convex ring; 3. Steering mechanism; 31. Steering drive; 311. First reduction mechanism; 32. Worm gear box; 321. Upper housing; 322. Lower housing; 33. Worm; 34. Worm wheel; 4. Support rod; 41. Inner rod; 411. Nut; 42. Outer rod; 421. Lead screw; 43. Clamp; 44. Handle. Detailed Implementation

[0023] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise expressly defined.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0027] like Figures 1 to 4 As shown in the figure, this embodiment demonstrates a vehicle support wheel with steering function, including a frame 1, a support rod 4 at the top of the frame 1, and a wheel hub 2 rotatably mounted on the frame 1. A steering mechanism 3 is provided between the frame 1 and the support rod 4. The steering mechanism 3 includes a worm gear box 32 and a steering drive 31. The worm gear box 32 is fixed to the top of the frame 1. The worm gear box 32 is provided with a worm wheel 34 and a worm 33 that mesh with each other. The worm 33 is drivenly connected to the output shaft of the steering drive 31. The worm wheel 34 is fixedly connected to the support rod 4, and the support rod 4 rotates synchronously with the worm wheel 34.

[0028] In this embodiment, a steering mechanism 3 is provided between the support rod 4 and the frame 1. The steering mechanism 3 includes a worm gear box 32 and a steering drive 31. The worm gear box 32 contains a worm gear 34 and a worm 33. That is, the steering mechanism 3 drives the worm gear 34 and the worm 33 by rotating the drive to realize the relative rotation of the support rod 4 and the hub 2, thereby realizing the steering of the moving support wheel. No manual operation is required, making the operation easier and less strenuous for the operator. At the same time, it also allows the operator to stay away from the moving support wheel and maintain a safe distance from the object being moved, thereby improving the safety of using the moving support wheel. Through the transmission of the worm gear 34 and the worm 33, the steering mechanism 3 can accurately control the relative rotation angle between the support rod 4 and the hub 2, thereby realizing precise steering of the entire moving support wheel. This design improves the operator's control over the moving support wheel, reducing the possibility of the moved object being bumped or struck. Furthermore, the worm gear 33 is connected to the steering drive 31, and the transmission between the worm wheel 33 and worm gear 34 has a self-locking characteristic. The steering drive 31 can control the rotation of the worm wheel 34 through the worm gear 33. When the steering drive 31 is not working, the support rod 4 has difficulty controlling the rotation of the worm wheel 34, thus preventing the moving support wheel from unexpectedly turning, improving the stability of the moving support wheel during operation, and also enhancing the safety of the moving support wheel. Secondly, the worm gear 33 transmission system has a relatively simple structure, is easy to disassemble and assemble, and facilitates daily maintenance, which helps extend the service life of the moving support wheel and reduce maintenance costs.

[0029] like Figure 2 and Figure 4 As shown, in this embodiment, the worm gear box 32 includes an upper box body 321 and a lower box body 322 that are spliced ​​together. A mounting cavity for the worm wheel 34 and worm 33 to rotate is formed between the upper box body 321 and the lower box body 322. The lower box body 322 is fixedly mounted on the upper surface of the frame 1. The top of the upper box body 321 has a through hole for a support rod 4 to extend into. The bottom end of the support rod 4 extends into the mounting cavity and is fixedly connected to the worm wheel 34 inside the worm gear box 32. The upper box body 321 and the lower box body 322... The assembly process of the worm gear box 32 is simplified by the splicing, which makes it easier to access the internal components during manufacturing and maintenance. When it is necessary to repair or replace the worm gear 34, worm 33 and other parts, the upper housing 321 can be easily disassembled without removing the entire worm gear box 32 from the frame 1. In addition, the support rod 4 is directly connected to the worm gear, which can transmit the steering driving force more effectively and reduce the steering error caused by loose connection or wear, making the steering of the moving support wheel more precise and reliable.

[0030] In addition, in this embodiment, a first reduction mechanism 311 is provided between the worm gear box 32 and the steering drive 31. The first reduction mechanism 311 has an input end and an output end. The output shaft of the reduction drive extends into the input end and is connected to the first reduction mechanism 311 in a transmission connection. The output end of the first reduction mechanism 311 is connected to the worm 33 in a transmission connection. The first reduction mechanism 311 can reduce the output speed of the steering drive 31 and increase the output torque at the same time, so that the relative steering of the support rod 4 and the wheel hub 2 is more stable, which helps to improve the steering stability of the moving support wheel.

[0031] like Figure 2 As shown, in this embodiment, both the worm gear 34 and the worm 33 are placed horizontally. The worm gear 34 is sleeved on the outer surface of the support rod 4. The bottom end of the support rod 4 extends into the lower housing 322 and is rotatably connected to the lower housing 322 through a bearing. In addition, the upper housing 321 also has a bearing connected to the support rod 4 at the through hole. When the moving support wheel needs to turn, the steering drive 31 is activated. The steering drive 31 drives the worm 33 to rotate through the first reduction mechanism 311. The worm 33 cooperates with the worm gear 34 to drive the support rod 4 to rotate. Since the support rod 4 is connected to the object being moved and is fixed relative to the object being moved, the wheel hub 2 rotates relative to the support rod 4, thereby realizing the steering of the moving support wheel.

[0032] like Figure 1 and Figure 2 As shown, the frame 1 in this embodiment includes a connecting seat 11, and connecting plates 12 extending downward on both sides of the connecting seat 11. The frame 1 is generally U-shaped. The rollers are rotatably connected between the two connecting plates 12. The connection between the connecting plate 12 and the connecting seat 11 is provided with an inwardly recessed reinforcing rib 13. The reinforcing rib 13 can increase the rigidity of the connection between the connecting seat 11 and the connecting plate 12, thereby increasing the load of the connecting seat 11, so that the moving support wheel can bear a larger weight of object, and at the same time, it can reduce the possibility of the connecting seat 11 being deformed and damaged.

[0033] like Figure 2As shown, in this embodiment, the hub 2 includes a roller and a drive motor 24 and a second reduction mechanism 25 disposed inside the roller. The roller includes a rolling surface in contact with the ground and a first end cap 22 and a second end cap 23 fixed on both sides of the rolling surface. The rolling surface is annular, and the rolling surface, the first end cap 22, and the second end cap 23 form a receiving cavity. The drive motor 24 and the second reduction mechanism 25 are both located within the receiving cavity. In addition, the drive motor 24 includes a housing 241, a stator 243 fixed to the inner wall of the housing 241, and a rotor 242 for cooperating with the stator 243. The end of the housing 241 near the first end cap 22 passes through the first end cap 22 and is rotatably connected to the connecting plate 12. The outer periphery of the housing 241 is rotatably engaged with the first end cover 22 via bearings. The end of the housing 241 away from the first end cover 22 is provided with a protruding ring 251 extending toward the second end cover 23. The second reduction mechanism 25 is installed inside the protruding ring 251. One end of the rotor 242 extends into the protruding ring 251 and is connected to the second reduction mechanism 25 for transmission. By directly installing the second reduction mechanism 25 inside the protruding ring 251 at the end of the housing 241, the second reduction mechanism 25 and the drive motor 24 share the housing 241, achieving a high degree of integration between the drive motor 24 and the second reduction mechanism 25. This can reduce the size and weight of the drive motor 24 and the second reduction mechanism 25, making the internal structure of the roller more compact.

[0034] In this embodiment, the drive motor 24 and the second reduction mechanism 25 are directly installed inside the roller, which can significantly reduce the volume occupied by the drive motor 24 and the second reduction mechanism 25, making the equipment more compact and lightweight. In addition, the fact that the drive motor 24 and the second reduction mechanism 25 are inside the roller can reduce the possibility of the drive motor 24 and the second reduction mechanism 25 being impacted by external forces. The roller can protect the drive motor 24 and the second reduction mechanism 25 and help extend their service life. Secondly, the rolling surface is fixed by the first end cover 22 and the second end cover 23 and forms a rotating connection with the drive motor 24 housing 241 and the frame 1, which ensures the compactness and stability of the overall structure of the roller, so that the roller can remain stable during rotation and reduce vibration and noise caused by structural looseness or instability.

[0035] like Figure 1 and Figure 3As shown, in this embodiment, the support rod 4 includes an inner rod 41 and an outer rod 42. The outer rod 42 is slidably connected to the inner rod 41. A lead screw 421 is rotatably connected inside the outer rod 42. The end of the inner rod 41 is provided with a nut 411 that cooperates with the lead screw 421. The lead screw 421 and the nut 411 rotate relative to each other to achieve relative sliding between the inner rod 41 and the outer rod 42. In addition, to facilitate the rotation of the lead screw 421, the top end of the lead screw 421 in this embodiment passes through the top end of the outer rod 42 and is fixedly connected to a handle 44. The operator can rotate the handle 44 to achieve the rotation of the lead screw 421. Furthermore, in this embodiment, a clamp 43 is fixedly installed on the outer surface of the outer rod 42. The support rod 4 is fixed to the object being moved by the clamp 43. Then, the operator controls the relative sliding between the outer rod 42 and the inner rod 41 by rotating the handle 44, so that the support rod 4 gradually extends. When the object being moved is lifted to a specified height, the rollers can be started to achieve the effect of moving the vehicle.

[0036] In addition, to make the use of the vehicle moving support wheel more intelligent, the frame 1 in this embodiment is equipped with a mounting base, and a controller is fixed in the mounting base. The steering drive 31 and the drive motor 24 are both electrically connected to the controller. At the same time, the controller is equipped with a remote control, which allows the operator to remotely control the vehicle moving support wheel. During the forward or backward movement of the vehicle moving support wheel, the operator can also control the vehicle moving support wheel to turn left or right at the same time, realizing simultaneous turning during the forward and backward movement of the vehicle moving support wheel. This can improve the intelligence of the vehicle moving support wheel, and at the same time, it can keep the operator away from the working range of the vehicle moving support wheel, which can significantly improve the safety of using the vehicle moving support wheel.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A vehicle support wheel with steering function, comprising a frame, a support rod at the top of the frame, and a wheel hub rotatably mounted on the frame, characterized in that, A steering mechanism is provided between the frame and the support rod. The steering mechanism includes a worm gear box and a steering drive. The worm gear box is fixed to the top of the frame. The worm gear box contains a meshing worm wheel and a worm. The worm is driven by the output shaft of the steering drive. The worm wheel is fixedly connected to the support rod, and the support rod rotates synchronously with the worm wheel to achieve relative rotation between the hub and the support rod.

2. A vehicle-moving support wheel with steering function according to claim 1, characterized in that, The worm gear box includes an upper box and a lower box that are spliced ​​together. An installation cavity for the worm gear and worm to rotate is formed between the upper box and the lower box. The bottom end of the support rod passes through the upper box and extends into the installation cavity, and is fixedly connected to the worm gear.

3. A vehicle-moving support wheel with steering function according to claim 1, characterized in that, A first reduction mechanism is provided between the worm gear box and the steering drive. The first reduction mechanism has an input end and an output end. The output shaft of the reduction drive extends into the input end and is connected to the first reduction mechanism in a transmission connection. The output end of the first reduction mechanism is connected to the worm gear transmission.

4. A vehicle-moving support wheel with steering function according to claim 1, characterized in that, The hub includes a roller and a drive motor and a second reduction mechanism disposed inside the roller. One end of the drive motor extends out of the roller and is fixedly connected to the frame, while the other end is connected to the second reduction mechanism for transmission. The second drive motor drives the roller to rotate through the second reduction mechanism.

5. A vehicle-moving support wheel with steering function according to claim 4, characterized in that, The roller includes a rolling surface in contact with the ground and a first end cover and a second end cover fixed on both sides of the rolling surface. The first end cover is rotatably connected to the housing of the drive motor, the second end cover is rotatably connected to the frame, and the second reduction mechanism is driven by the second end cover. The drive motor drives the second end cover to rotate through the second reduction mechanism, and the second end cover drives the rolling surface to roll.

6. A vehicle-moving support wheel with steering function according to claim 4, characterized in that, The drive motor includes a housing, a stator fixed to the inner wall of the housing, and a rotor for cooperating with the stator. The end of the housing is provided with a convex ring extending along the rotor axis. A second reduction mechanism is installed inside the convex ring. One end of the rotor extends into the convex ring and is connected to the second reduction mechanism for transmission.

7. A vehicle-moving support wheel with steering function according to claim 1, characterized in that, The frame includes a connecting seat, with downwardly extending connecting plates on both sides of the connecting seat. The connecting plates are rotatably connected to both sides of the hub, and the connection between the connecting plates and the connecting seat is provided with concave reinforcing ribs.

8. A vehicle-moving support wheel with steering function according to claim 1, characterized in that, The support rod includes an inner rod and an outer rod. The outer rod is slidably connected to the inner rod. A lead screw is rotatably connected inside the outer rod. The end of the inner rod is provided with a nut that cooperates with the lead screw. The lead screw and the nut rotate relative to each other to achieve relative sliding between the inner rod and the outer rod.

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