Manual push-pull type mechanical spare wheel carrier system
By installing parallel guide rails and a frame-type spare wheel rack at the bottom of the vehicle, the push-pull design solves the problems of complex, laborious, and unsafe operation of existing manual mechanical spare wheel racks, achieving labor-saving and safe access to spare wheels and improving space utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHAANXI HEAVY DUTY AUTOMOBILE CO LTD
- Filing Date
- 2024-11-18
- Publication Date
- 2026-05-19
AI Technical Summary
Existing manual mechanical spare wheel racks are complex, labor-intensive, and unsafe to operate, especially when bending over to operate them, which can easily cause accidents. They also have low space utilization.
A manual push-pull mechanical spare wheel frame system was designed. By setting parallel guide rails and frame-shaped spare wheel frames at the bottom of the vehicle, and using the sliding connection of the guide rails and elastic fixing rings, the push-pull operation of the spare wheel can be realized. The system is combined with a positioning device and a fixing plate to ensure stability.
It enables labor-saving, simple, and safe access to spare wheels, improves space utilization, and avoids safety hazards caused by bending over to operate.
Smart Images
Figure CN122059009A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive equipment technology, and specifically to a manually operated push-pull mechanical spare wheel carrier system. Background Technology
[0002] Spare wheels are essential equipment for most vehicles. In existing box trucks, spare wheels are typically mounted horizontally on either side or inside the chassis below the cargo box using a manual mechanical spare wheel rack. The rack is raised via a lifting device, and once at its highest point, a mounting bracket is secured to the rack's mounting bracket with bolts. When the spare wheel is needed, the bolts are removed, and the wheel falls to the ground under its own weight. Current spare wheel racks commonly use hand-cranked worm gears or gear mechanisms for lifting, with the raising and lowering process completed by cranking a handle. Existing manual mechanical spare wheel racks have the following main drawbacks:
[0003] 1. The process of raising and lowering the spare wheel requires the operator to bend down to the bottom of the cargo box, remove or install fixing bolts, and separate or fix the spare wheel from the spare wheel frame. The operation is not only dirty, but also complicated and time-consuming.
[0004] 2. Operators cannot observe their surroundings during operation, making them highly susceptible to bumps and falls that could lead to operational safety accidents.
[0005] 3. During the lifting of the spare wheel, a wrench is needed to rotate the transmission rod of the worm gear, which is laborious and inefficient. Summary of the Invention
[0006] To address the problems in the existing technology, this invention patent designs a manual push-pull mechanical spare wheel frame system to solve the problems of inconvenience and difficulty in operation of existing manual mechanical spare wheel frames.
[0007] The technical solution adopted in this invention is as follows: the mechanical spare wheel frame system includes two parallel guide rails, a frame-type spare wheel frame, and a spare wheel fixing bracket. The two guide rails are respectively assembled on the lower part of the vehicle cargo box floor. The frame-type spare wheel frame is slidably connected to the two guide rails and can be pushed and pulled back and forth along the guide rails. A positioning device is provided between the frame-type spare wheel frame and the guide rails. The spare wheel fixing bracket is assembled on the frame-type spare wheel frame.
[0008] Furthermore, the frame-type spare wheel frame includes a support frame, with a front beam tube and a rear beam tube respectively provided at the front and rear ends of the support frame. Rollers are rotatably connected to both ends of the front beam tube and the rear beam tube. The rollers at both ends of the front beam tube and the rear beam tube are located in two guide rails and can roll back and forth along the guide rails.
[0009] Furthermore, the support frame is welded together from two channel-shaped longitudinal beams and two support crossbeams. The front beam tube and the rear beam tube are respectively fixed to the front and rear ends of the two channel-shaped longitudinal beams. Two reinforcing ribs are welded onto the two support crossbeams. A fixing plate is fixed on the reinforcing ribs. The spare wheel fixing bracket is assembled on the fixing plate.
[0010] Furthermore, the inner ends of the two guide rails are respectively fixed with elastic retaining rings, and the rollers at both ends of the rear beam tube can be engaged and fixed in the elastic retaining rings at the inner ends of the two guide rails. By pulling the frame-type spare wheel frame forward, the rollers at both ends of the rear beam tube can be disengaged from the elastic retaining rings.
[0011] Furthermore, the front outer sides of the two guide rails are respectively provided with a stop block. The stop block is higher than the upper side of the guide rail, and its inner side has an arc-shaped notch. The bottom of the stop block is provided with a right-angled mounting seat. The mounting seat is assembled and fixed to the frame by screws. The length of the front beam tube is less than the distance between the two stop blocks, so it can pass through the two stop blocks. The two ends of the rear beam tube extend outwards to the sides and exceed the two guide rails. The length of the rear beam tube is greater than the distance between the two stop blocks.
[0012] Furthermore, the front beam tube and the rear beam tube are respectively provided with limit steps and external threads at both ends. The roller is composed of bearings and is positioned by retaining rings and washers, and fixed by fastening nuts.
[0013] Furthermore, nylon straps are provided at both ends of the front beam tube.
[0014] Furthermore, the outer edges of the two guide rails are integrally stamped to form limiting protrusions, and the limiting protrusions on both sides are inclined structures. The height of the limiting protrusions is lower than the bottom surface of the front beam tube and the rear beam tube.
[0015] Furthermore, positioning plates are welded to the front ends of the two longitudinal beams of the frame-type spare wheel frame, the positioning plates extend downwards, and bolt fixing holes are opened on the positioning plates. When the frame-type spare wheel frame is pushed backwards to the end, it is connected and fixed to the vehicle frame by bolts passing through the bolt fixing holes on the positioning plates.
[0016] Furthermore, the spare wheel bracket is a cross-shaped frame, which is bolted to the fixing plate of the frame-type spare wheel frame.
[0017] The manual push-pull mechanical spare wheel rack system disclosed in this invention can be applied to box trucks, wherein the box trucks are electrically driven vehicles, and the manual push-pull mechanical spare wheel rack system is assembled at the rear of the battery compartment on the floor of the vehicle's cargo box.
[0018] Compared to existing technologies, the advancements of this invention's patented manually push-pull mechanical spare wheel frame system lie in:
[0019] 1. The mechanical spare wheel rack system designed in this invention is a frame-type spare wheel rack that is slidably connected to the bottom of the vehicle via guide rails. The spare wheel can be retrieved by manually pushing and pulling, making the operation labor-saving, simple and convenient.
[0020] 2. The spare wheels are placed under the bottom plate of the cargo box. During disassembly, the operator does not need to bend down under the cargo box, which ensures high operational safety.
[0021] 3. The inner side of the guide rail is equipped with an elastic retaining ring to limit and fix the rollers of the rear beam tube. The front sides of the guide rail and the frame-type spare wheel frame are respectively equipped with a fixing plate and a positioning plate to position the frame-type spare wheel frame in the retracted state and ensure the stability of the frame-type spare wheel frame in the retracted state.
[0022] 4. The mechanical spare wheel rack system designed in this invention is more suitable for new energy vehicles where the battery is located between the upper wing surface of the frame and the cargo box floor. This pull-out spare wheel rack can be placed in the rear overhang space, improving space utilization. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the manually pushed-pull mechanical spare wheel frame system in the extended state.
[0024] Figure 2 This is a side view of the manually pushed-pull mechanical spare wheel frame system in its extended state.
[0025] Figure 3 This is a side view of the manually pushed-pull mechanical spare wheel frame system in its retracted state.
[0026] Figure 4 This is a front view structural diagram of the frame-type spare wheel frame in the extended state of the manually pushed-pull mechanical spare wheel frame system.
[0027] Figure 5 This is a cross-sectional structural diagram of the front beam tube of a manually pushed-pull mechanical spare wheel frame system.
[0028] Figure 6 This is a schematic diagram of the guide rail structure of a manually operated push-pull mechanical spare wheel frame system.
[0029] In the diagram, 1 is the guide rail, 11 is the elastic retaining ring, 12 is the limiting protrusion, 13 is the fixing plate, 21 is the mounting base, 22 is the stop block, 3 is the frame-type spare wheel frame, 31 is the longitudinal beam, 32 is the reinforcing rib, 33 is the fixing plate, 34 is the crossbeam, 35 is the front beam tube, 36 is the rear beam tube, 37 is the roller, 38 is the positioning plate, 371 is the retaining ring, 372 is the washer, 373 is the fastening nut, 4 is the spare wheel fixing bracket, and 5 is the nylon pull strap. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0031] like Figure 1 , 2 As shown in Figure 3, this invention patent designs an embodiment of a manually push-pull mechanical spare wheel frame system. In this embodiment, the mechanical spare wheel frame system includes two parallel guide rails 1, a frame-type spare wheel frame 3, and a spare wheel fixing bracket 4. The two guide rails 1 are respectively assembled on the lower part of the vehicle cargo box floor. The frame-type spare wheel frame 3 is slidably connected to the two guide rails 1 and can be pushed and pulled back and forth along the guide rails 1. The spare wheel fixing bracket 4 is assembled on the frame-type spare wheel frame 3.
[0032] Combination Figure 4 , 5 As shown, the frame-type spare wheel frame 3 includes a support frame, which is welded together from two channel-shaped longitudinal beams 31 and two support crossbeams 34. Two parallel reinforcing ribs 32 are vertically welded onto the two support crossbeams 34, and a fixing plate 33 is welded and fixed onto the reinforcing ribs 32. The spare wheel fixing bracket 4 is a cross-shaped frame, which is assembled and fixed onto the fixing plate 33 by bolts. The front and rear ends of the two channel-shaped longitudinal beams 31 are respectively welded to a front beam tube 35 and a rear beam tube 36. Rollers 37 are rotatably connected to the ends of the front beam tube 35 and the rear beam tube 36. The rollers 37 at the ends of the front beam tube 35 and the rear beam tube 36 are respectively located in two guide rails 1 and can roll back and forth along the guide rails 1. The roller 37 is composed of bearings. Limiting steps and external threads are respectively provided at both ends of the front beam tube 35 and the rear beam tube 36. The bearings constituting the roller 37 are fixed to the limiting steps at both ends of the front and rear beam tubes by retaining rings 371 and washers 372, and are further secured by fastening nuts 373. Nylon straps 5 are also fixedly installed at both ends of the front beam tube 35 to facilitate pulling the frame-type spare wheel frame 3.
[0033] Combination Figure 6 As shown, the outer edges of the two guide rails 1 are integrally stamped to form limiting protrusions 12. The limiting protrusions 12 can effectively prevent the rollers 37 on both sides of the frame-type back wheel frame 3 from derailing during movement. The limiting protrusions 12 on both sides have a sloping structure to avoid interference with the installation of the fastening nuts 373 of the rollers 37. The maximum height of the limiting protrusions 12 is lower than the bottom surface of the front beam tube 35 and the rear beam tube 36 to avoid interference with the movement of the beam tubes. Fixing plates 13 are welded to the front end of the two guide rails 1, and the fixing plates 13 on both sides are fixed to the frame with bolts.
[0034] Elastic retaining rings 11 are fixed to the upper inner sides of the two guide rails 1 respectively. The rollers 37 at both ends of the rear beam tube 36 can be engaged and fixed in the elastic retaining rings 11 at the inner sides of the two guide rails 1. By pulling the frame-type spare wheel frame 3 forward, the rollers 37 at both ends of the rear beam tube 36 can be disengaged from the elastic retaining rings 11. A stop block 22 is provided on the outer front end of the two guide rails 1 respectively. The stop block 22 is higher than the upper side of the guide rail 1. The inner side of the stop block 22 has an arc-shaped notch. The bottom of the stop block 22 is provided with a right-angled mounting base 21. The two plates of the mounting base 21 have conical connecting holes and are assembled and fixed to the frame with screws. The length of the front beam tube 35 of the frame-type spare wheel frame 3 is less than the distance between the two stops 22, and it can pass through the two stops 22. The two ends of the rear beam tube 26 extend out of the rollers 37 to the sides and exceed the two guide rails 1. The length of the rear beam tube 36 is greater than the distance between the two stops 22, and it will be blocked by the stops 22 on both sides when it moves forward.
[0035] In addition, positioning plates 38 are welded to the front ends of the two longitudinal beams 31 of the frame-type spare wheel frame 3, and the positioning plates 38 extend downward. The positioning plates 38 have bolt fixing holes. When the frame-type spare wheel frame 3 is pushed backward to the end, it is connected and fixed to the frame by bolts passing through the bolt fixing holes on the positioning plates 38, so as to prevent the frame-type spare wheel frame 3 from sliding off the guide rail 1 when the spare wheel is not in use.
[0036] When the manually push-pull mechanical spare wheel carrier system disclosed in this invention is applied, in the retracted state, the frame-type spare wheel carrier 3 is located on the upper side of the guide rail 1, the rear beam tube 36 is engaged and fixed in the elastic fixing ring 11, the front positioning plate 38 is connected and fixed to the frame by bolts, and the spare wheel is fixed to the fixing plate of the frame-type spare wheel carrier 3 by the spare wheel fixing bracket 4. When the spare wheel is needed, first remove the bolts on the front positioning plate 38 of the frame-type spare wheel carrier 3, grasp the nylon strap 5 and pull the frame-type spare wheel carrier 3 forward. When the rear beam tube 36 moves to the front of the guide rail 1, it is blocked by the stops 22 on both sides and located in the arc-shaped recess on the inner side of the stops 22. At this time, the frame-type spare wheel carrier 3 is laid down, the fixing bolts between the spare wheel fixing bracket 4 and the fixing plate 33 are removed, and the spare wheel can be removed.
[0037] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the present invention.
Claims
1. A manually operated push-pull mechanical spare wheel frame system, characterized in that, The mechanical spare wheel frame system includes two parallel guide rails, a frame-type spare wheel frame, and a spare wheel fixing bracket. The two guide rails are respectively assembled on the lower part of the vehicle cargo box floor. The frame-type spare wheel frame is slidably connected to the two guide rails and can be pushed and pulled back and forth along the guide rails. A positioning device is provided between the frame-type spare wheel frame and the guide rails. The spare wheel fixing bracket is assembled on the frame-type spare wheel frame.
2. The manually push-pull mechanical spare wheel frame system according to claim 1, characterized in that, The frame-type spare wheel frame includes a support frame, with a front beam tube and a rear beam tube respectively provided at the front and rear ends of the support frame. Rollers are rotatably connected to both ends of the front beam tube and the rear beam tube. The rollers at both ends of the front beam tube and the rear beam tube are located in two guide rails and can roll back and forth along the guide rails.
3. The manually push-pull mechanical spare wheel frame system according to claim 2, characterized in that, The support frame is welded together from two channel-shaped longitudinal beams and two support crossbeams. The front beam tube and the rear beam tube are respectively fixed to the front and rear ends of the two channel-shaped longitudinal beams. Two reinforcing ribs are welded on the two support crossbeams. A fixing plate is fixed on the reinforcing ribs. The spare wheel fixing bracket is assembled on the fixing plate.
4. A manually operated push-pull mechanical spare wheel frame system according to claim 3, characterized in that, The inner ends of the two guide rails are respectively fixed with elastic retaining rings. The rollers at both ends of the rear beam tube can be engaged and fixed in the elastic retaining rings at the inner ends of the two guide rails. By pulling the frame-type spare wheel frame forward, the rollers at both ends of the rear beam tube can be disengaged from the elastic retaining rings.
5. A manually operated push-pull mechanical spare wheel frame system according to claim 4, characterized in that, The front outer sides of the two guide rails are respectively provided with a stop block. The stop block is higher than the upper side of the guide rail and has an arc-shaped notch on its inner side. The bottom of the stop block is provided with a right-angled mounting seat. The mounting seat is assembled and fixed to the frame by screws. The length of the front beam tube is less than the distance between the two stop blocks and can pass through the two stop blocks. The two ends of the rear beam tube extend outwards to the sides with rollers and exceed the two guide rails. The length of the rear beam tube is greater than the distance between the two stop blocks.
6. A manually operated push-pull mechanical spare wheel frame system according to claim 5, characterized in that, The front beam tube and the rear beam tube are respectively provided with limit steps and external threads at both ends. The roller is composed of bearings and is positioned by retaining rings and washers and fixed by fastening nuts. The front beam tube is provided with nylon straps at both ends.
7. A manually operated push-pull mechanical spare wheel frame system according to claim 6, characterized in that, The outer edges of the two guide rails are integrally stamped to form limiting protrusions. The limiting protrusions on both sides have an inclined structure, and the height of the limiting protrusions is lower than the bottom surface of the front beam tube and the rear beam tube.
8. A manually operated push-pull mechanical spare wheel frame system according to claim 7, characterized in that, Positioning plates are welded to the front ends of the two longitudinal beams of the frame-type spare wheel frame. The positioning plates extend downward and have bolt fixing holes. When the frame-type spare wheel frame is pushed backward to the end, it is connected and fixed to the vehicle frame by bolts passing through the bolt fixing holes on the positioning plates.
9. A manually operated push-pull mechanical spare wheel frame system according to claim 7, characterized in that, The spare wheel bracket is a cross-shaped frame, which is bolted to the fixed plate of the frame-type spare wheel frame.
10. The application of the manually push-pull mechanical spare wheel rack system as described in claim 9 on a box truck, characterized in that, The box truck is an electric vehicle, and the manually pushed-pull mechanical spare wheel frame system is assembled at the rear of the battery compartment on the bottom plate of the vehicle's cargo box.