A lifting trolley device for the rim assembly of a tire endurance testing machine

Abstract

The present invention discloses a lifting trolley device for a rim assembly of a tire endurance testing machine, which includes two chassis bars. At one end of each of the two chassis bars, a second moving wheel is installed, and at the other end of the two chassis bars, a first moving wheel is provided. At a position above the first moving wheel on the upper end surface of the chassis bar, a wheel cover is fixedly connected; on the opposite sides of the two chassis bars, a first mounting seat is fixedly connected near the bending position of the chassis bar, and a limiting chute is provided at one end of the opposite sides of the two chassis bars away from the second moving wheel; through the foot-operated oil cylinder, sprocket and chain provided in the present invention, the lifting assembly can be lifted during use, and then the rim assembly can be lifted to the required height during use, which is convenient for connecting the rim assembly to the main shaft of the load adding device, can meet the installation requirements before the experiment, and at the same time, it is convenient to operate, low in cost, flexible in use and easy to repair.

Description

Technical Field

[0001] The present invention relates to the technical field of durability testing machine devices, and particularly to a rim assembly lifting trolley device for a tire durability testing machine. Background Art

[0002] Tires are often used under complex and harsh conditions. When driving, they bear various deformations, loads, forces, and high and low temperature effects. Therefore, they must have high load-bearing performance, traction performance, and buffering performance. At the same time, they are also required to have high wear resistance and flex fatigue resistance, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used for tire production, indicating that the rubber consumption capacity of tires is very significant.

[0003] A tire durability and high-speed performance testing machine is a machine used to test the service life of tires, that is, to simulate the maximum mileage of continuous driving of tires under a certain load and speed indoors. Before the test, the rim needs to be installed on the main shaft of the load application device first, which requires lifting the experimental rim assembly to be concentric with the main shaft and then connecting them with bolts. The prior art generally uses a pit-type lifting platform to lift the rim assembly. However, because it is in the pit, maintenance and inspection are relatively difficult, and at the same time, it requires programming control, etc., and the overall cost is relatively high. Summary of the Invention

[0004] The purpose of the present invention is to provide a rim assembly lifting trolley device for a tire durability testing machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A rim assembly lifting trolley device for a tire durability testing machine includes two chassis strips. Second moving wheels are installed at one end of each of the two chassis strips, and first moving wheels are provided at the other end of the two chassis strips. Wheel covers are fixedly connected to the upper end surfaces of the chassis strips at positions above the first moving wheels.

[0007] First mounting seats are fixedly connected to the opposite sides of the two chassis strips near the bending positions of the chassis strips. Limiting sliding grooves are opened at one ends of the opposite sides of the two chassis strips away from the second moving wheels. Limiting sliders are slidably connected in the limiting sliding grooves, and second mounting seats are fixedly connected to the positions where the limiting sliders penetrate out of the chassis strips.

[0008] Scissor rods are installed between the first mounting seats and the second mounting seats on the two chassis strips. The ends of the scissor rods are rotatably connected to the second mounting seats and the first mounting seats respectively. A center pin is provided at the intersection of the scissor rods. Limiting flanges are fixedly connected to both ends of the center pin. A fixed disk is fixedly connected to the upper end surface of the limiting flange at the upper end of the center pin. An adjustment component for adjusting the distance between the two chassis strips is provided in the limiting sliding groove on one side of the scissor rod.

[0009] Main vertical rods are fixedly connected to the upper end surfaces of the chassis strips near the bent positions. Auxiliary rods are fixedly connected to the upper end surfaces of the chassis strips near the main vertical rods. The upper ends of the auxiliary rods are bent and fixedly connected to the main vertical rods. A lifting assembly for lifting the rim is provided between the two main vertical rods;

[0010] A driving assembly for driving the lifting assembly to lift and lower is further provided on the upper end surface of the fixed disk.

[0011] As a further scheme of the present invention: The adjustment assembly includes a threaded rod. The threaded rod is rotatably connected in the limit sliding groove. The limit sliding groove is threadedly connected to the limit slider. The connecting shaft head at one end of the threaded rod is fixedly connected with a rotating handle at the position where it passes through the chassis strip.

[0012] As a further scheme of the present invention: The lifting assembly includes two fixing plates. Four limit rollers arranged in a rectangle are provided on one side of each of the two fixing plates. The fixing plates are connected to the main vertical rods through the four limit rollers. Fixed blocks are fixedly connected to one ends of the opposite sides of the two fixing plates close to the second moving wheel. Lower support arms are fixedly connected to the lower ends of the sides of the fixed blocks away from the main vertical rods. Slide rails are fixedly connected to the upper end surfaces of the two fixed blocks. Slide sleeves are slidably connected to the slide rails. Upper support arms are fixedly connected to the upper ends of the sides of the slide sleeves away from the main vertical rods. A connecting assembly for connecting the two fixed blocks is further provided between the two fixed blocks.

[0013] As a further scheme of the present invention: The connecting assembly includes a hollow connecting sleeve. The hollow connecting sleeve is arranged at the middle position between the two fixed blocks. Connecting arm rods are rotatably connected to the upper and lower ends on both sides of the hollow connecting sleeve. Two adapter seats are provided on the opposite sides of the fixed blocks. The ends of the connecting arm rods on both sides of the fixed blocks away from the hollow connecting sleeve are respectively rotatably connected to the adapter seats.

[0014] As a further scheme of the present invention: The driving assembly includes a mounting base plate. The mounting base plate is fixedly connected to the upper end surface of the fixed disk. A foot-operated oil cylinder is installed on the upper end surface of the fixed disk. A fixed sleeve is fixedly connected to the upper end of the cylinder body of the foot-operated oil cylinder. Limit assemblies for limiting the foot-operated oil cylinder are provided on both sides of the fixed sleeve. A pulling assembly for driving the hollow connecting sleeve to move up and down is provided on the foot-operated oil cylinder.

[0015] As a further scheme of the present invention: The limit assembly includes four rotating seats. The four rotating seats are respectively fixedly connected to the upper and lower ends on both sides of the fixed sleeve. Connecting rods are rotatably connected to the rotating seats. Slide seats are rotatably connected to the ends of the connecting rods away from the fixed sleeve. The slide seats are respectively slidably connected to the auxiliary rods.

[0016] As a further solution of the present invention: The pulling component includes a wheel frame, which is fixedly connected to the output end of the pedal-operated oil cylinder. A sprocket is rotatably connected inside the wheel frame. A chain is installed on the sprocket. One end of the chain is fixedly connected to the upper end of the hollow connecting sleeve, and the other end of the chain is fixedly connected to the upper end of the fixed sleeve.

[0017] As a further solution of the present invention: Fixed knobs for fixing the position of the sliding sleeve are provided on the sliding sleeves.

[0018] As a further solution of the present invention: Push handles are fixedly connected to the upper ends of the sides of the auxiliary rods away from the main vertical rod.

[0019] As a further solution of the present invention: Anti-slip sleeves made of rubber material are wrapped around the grips of the push handles.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. By setting the pedal-operated oil cylinder, sprocket and chain in the present invention, the lifting component can be lifted and lowered during use, and then the rim assembly can be lifted to the required height during use, which is convenient for connecting the rim assembly to the main shaft of the load adding device, can meet the installation requirements before the experiment, and at the same time, it is convenient to operate, low in cost, flexible in use and easy to repair.

[0022] 2. By setting the scissors rod, the second mounting seat, the first mounting seat and the adjustment component in the present invention, the distance between the two bottom frame strips can be adjusted during use, and then the distance between the two lower support arms and the two upper support arms can be adjusted accordingly according to the diameter of the lifted rim assembly during use to meet the lifting requirements of rim assemblies with different diameters. At the same time, when the device is not in use, the distance between the two bottom frame strips can be adjusted to the minimum, and then the occupied space can be reduced, which is convenient for shelving.

[0023] 3. By setting the first moving wheel and the second moving wheel in the present invention, it is convenient to move the device during use, thereby improving the flexibility of the device and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] Figure 2 It is a schematic back structure diagram of the present invention.

[0026] Figure 3 It is a schematic partial structure diagram of the present invention.

[0027] Figure 4 It is a schematic structural diagram of the center pin in the present invention.

[0028] Figure 5 This is a schematic structural diagram of the adjustment component in the present invention.

[0029] Figure 6 This is a schematic structural diagram of the limit roller in the present invention.

[0030] Figure 7 This is a schematic cross-sectional view of the limit chute in the present invention.

[0031] Wherein: 1. Bottom frame strip; 2. First moving wheel; 3. Fixed block; 4. Lower support arm; 5. Second moving wheel; 6. Wheel cover; 7. Fixed plate; 8. Sliding sleeve; 9. Slide rail; 10. Auxiliary rod; 11. Wheel frame; 12. Sprocket; 13. Chain; 14. Pedal type oil cylinder; 15. Main vertical rod; 16. Upper support arm; 17. Adapter seat; 18. Connecting arm rod; 19. Hollow connecting sleeve; 20. Push handle; 21. Fixed sleeve; 22. Connecting frame rod; 23. Sliding seat; 24. Rotating seat; 25. Installation bottom plate; 26. First mounting seat; 27. Fixed disk; 28. Limit chute; 29. Second mounting seat; 30. Scissor rod; 31. Central pin; 32. Limit stop piece; 33. Rotating handle; 34. Limit slider; 35. Threaded rod; 36. Limit roller. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-7 , in the embodiment of the present invention, a rim assembly lifting trolley device for a tire durability tester includes two bottom frame strips 1. Second moving wheels 5 are installed at one ends of the two bottom frame strips 1, and first moving wheels 2 are provided at the other ends of the two bottom frame strips 1. Wheel covers 6 are fixedly connected to the upper end surfaces of the bottom frame strips 1 at positions above the first moving wheels 2. By providing the first moving wheels 2 and the second moving wheels 5, it is convenient to move the device during use, thereby improving the flexibility of the device and making it more convenient to use.

[0034] On the relative sides of the two chassis bars 1, near the bending positions of the chassis bars 1, a first mounting seat 26 is fixedly connected. At one end of the relative sides of the two chassis bars 1, away from the second moving wheel 5, a limiting sliding groove 28 is provided. A limiting sliding block 34 is slidably connected in each of the limiting sliding grooves 28. At the position where the limiting sliding block 34 penetrates out of the chassis bar 1, a second mounting seat 29 is fixedly connected. A scissors rod 30 is installed between the first mounting seat 26 and the second mounting seat 29 on the two chassis bars 1. The ends of the scissors rod 30 are rotatably connected to the second mounting seat 29 and the first mounting seat 26 respectively. A central pin 31 is provided at the intersection of the scissors rod 30. Limiting retaining plates 32 are fixedly connected to both ends of the central pin 31. A fixed plate 27 is fixedly connected to the upper end face of the limiting retaining plate 32 at the upper end of the central pin 31. An adjusting assembly for adjusting the distance between the two chassis bars 1 is provided in the limiting sliding groove 28 on one side of the scissors rod 30;

[0035] By providing the scissors rod 30, the second mounting seat 29, the first mounting seat 26 and the adjusting assembly, the distance between the two chassis bars 1 can be adjusted during use. Furthermore, during use, the distance between the two lower support arms 4 and the two upper support arms 16 can be correspondingly adjusted according to the diameter of the rim assembly to be lifted, so as to meet the lifting requirements for rim assemblies of different diameters. At the same time, when the device is not in use, the distance between the two chassis bars 1 can be adjusted to the minimum, thereby reducing the occupied space and facilitating storage.

[0036] The adjusting assembly includes a threaded rod 35. The threaded rod 35 is rotatably connected in the limiting sliding groove 28. The limiting sliding groove 28 is threadedly connected to the limiting sliding block 34. A rotating handle 33 is fixedly connected to the position where the connecting shaft head at one end of the threaded rod 35 penetrates through the chassis bar 1.

[0037] When it is necessary to adjust the distance between the two chassis bars 1, the threaded rod 35 can be rotated by rotating the rotating handle 33. The rotation of the threaded rod 35 drives the limiting sliding block 34 to slide in the limiting sliding groove 28, and then the scissors rod 30 can be driven to open and close, so as to realize the adjustment of the distance between the two chassis bars 1.

[0038] On the upper end faces of the chassis bars 1, near the bending positions, main vertical rods 15 are fixedly connected. On the upper end faces of the chassis bars 1, near the main vertical rods 15, auxiliary rods 10 are fixedly connected. The upper ends of the auxiliary rods 10 are bent and fixedly connected to the main vertical rods 15. A lifting assembly for lifting the rim is provided between the two main vertical rods 15; By providing the foot-operated oil cylinder 14, the sprocket 12 and the chain 13, the lifting assembly can be lifted during use, and then the rim assembly can be lifted to the required height during use, which is convenient for connecting the rim assembly to the main shaft of the load adding device and can meet the installation requirements before the experiment. At the same time, it is easy to operate, low in cost, flexible in use and easy to maintain.

[0039] The lifting assembly includes two fixing plates 7. Four limiting rollers 36 arranged in a rectangle are provided on one side of each of the two fixing plates 7. The fixing plates 7 are connected to the main vertical rod 15 through the four limiting rollers 36. Fixing blocks 3 are fixedly connected to one ends of the opposite sides of the two fixing plates 7 close to the second moving wheels 5. Lower support arms 4 are fixedly connected to the lower ends of the sides of the fixing blocks 3 away from the main vertical rod 15. Slide rails 9 are fixedly connected to the upper end faces of the two fixing blocks 3. Slide sleeves 8 are slidably connected to the slide rails 9. Upper support arms 16 are fixedly connected to the upper ends of the sides of the slide sleeves 8 away from the main vertical rod 15. A connecting assembly for connecting the two fixing blocks 3 is further provided between the two fixing blocks 3; Fixing knobs for fixing the positions of the slide sleeves 8 are provided on the slide sleeves 8 respectively.

[0040] The provided limiting rollers 36 can reduce the wear on the main vertical rod 15 during use, and at the same time reduce the resistance during lifting. When placing the rim assembly, first slide the slide sleeve 8 according to the size of the rim assembly to adjust the distance between the upper support arm 16 and the lower support arm 4. After the adjustment is completed, use the fixing knob to fix the slide sleeve 8, and then place the rim assembly at the position between the upper support arm 16 and the lower support arm 4, and the placement of the rim assembly can be completed.

[0041] The connecting assembly includes a hollow connecting sleeve 19. The hollow connecting sleeve 19 is arranged at the middle position between the two fixing blocks 3. Connecting arm rods 18 are rotatably connected to the upper and lower ends on both sides of the hollow connecting sleeve 19. Two adapter seats 17 are provided on the opposite sides of the fixing blocks 3 respectively. The ends of the connecting arm rods 18 on both sides of the fixing blocks 3 away from the hollow connecting sleeve 19 are respectively rotatably connected to the adapter seats 17.

[0042] The provided hollow connecting sleeve 19 can be connected to the chain 13 during use. At the same time, under the action of the connecting arm rods 18, the hollow connecting sleeve 19 can always remain in the middle position and will not be affected by the adjustment of the distance between the bottom frame strips 1, avoiding the situation of deviation.

[0043] A driving assembly for driving the lifting assembly to lift is further provided on the upper end face of the fixed disk 27; The driving assembly includes a mounting bottom plate 25. The mounting bottom plate 25 is fixedly connected to the upper end face of the fixed disk 27. A foot-operated oil cylinder 14 is installed on the upper end face of the fixed disk 27. A fixed sleeve 21 is fixedly connected to the upper end of the cylinder body of the foot-operated oil cylinder 14. Limiting assemblies for limiting the foot-operated oil cylinder 14 are provided on both sides of the fixed sleeve 21. A pulling assembly for driving the hollow connecting sleeve 19 to move up and down is provided on the foot-operated oil cylinder 14.

[0044] When the foot-operated oil cylinder 14 is in use, just step on the pedal on the foot-operated oil cylinder 14 to drive the oil in the cylinder to push the piston rod in the cylinder to move, and then drive the output end of the oil cylinder to rise, so as to meet the driving needs during the use of the device.

[0045] The limiting component includes four rotating seats 24 which are respectively fixedly connected to the upper and lower ends of both side faces of the fixed sleeve 21. A connecting rod 22 is rotatably connected to each of the rotating seats 24. One end of the connecting rod 22 far away from the fixed sleeve 21 is rotatably connected to a sliding seat 23, and the sliding seats 23 are respectively in sliding connection with the auxiliary rod 10.

[0046] By providing the rotating seats, the sliding seats 23 and the connecting rods 22, the foot-operated oil cylinder 14 can be limited during use, thereby preventing the foot-operated oil cylinder 14 from rotating during use.

[0047] The pulling component includes a wheel frame 11 which is fixedly connected to the output end of the foot-operated oil cylinder 14. A sprocket 12 is rotatably connected inside the wheel frame 11. A chain 13 is installed on the sprocket 12. One end of the chain 13 is fixedly connected to the upper end of the hollow connecting sleeve 19, and the other end of the chain 13 is fixedly connected to the upper end of the fixed sleeve 21. When the output end of the foot-operated oil cylinder 14 rises, the sprocket 12 is pushed to rise. At the same time, the chain 13 drives the hollow connecting sleeve 19 to rise simultaneously. The rising of the hollow connecting sleeve 19 drives the fixed block 3 and the lower support arm 4 to rise through the connecting arm 18, thereby lifting the rim assembly to the required position.

[0048] On the upper sides of the auxiliary rods 10 far away from the main vertical rod 15, push handles 20 are fixedly connected respectively; the grip parts of the push handles 20 are all wrapped with anti-slip sleeves made of rubber material; by providing the anti-slip sleeves made of rubber material at the grip parts of the push handles 20, the phenomenon of slipping can be avoided when holding the grips.

[0049] The working principle of the present invention is as follows: Before lifting, the output end of the pedal cylinder 14 is positioned at the lowest point, and the lower support arm 4 and the fixed block 3 are lowered to the lowest point. Then, the distance between the upper support arm 16 and the lower support arm 4 is adjusted. After the adjustment is completed, the sliding sleeve 8 is fixed using a fixing knob. The distance between the support arms is set to meet the support requirements of the rim assembly. Then, the rim assembly is placed between the upper support arm 16 and the lower support arm 4. By stepping on the pedal of the pedal cylinder 14, the output end of the cylinder rises, and then drives the hollow connecting sleeve 19 to rise simultaneously through the chain 13. The rising of the hollow connecting sleeve 19 drives the fixed block 3 and the lower support arm 4 to rise through the connecting arm rod 18, thereby lifting the rim assembly to the required position. After the rim assembly is installed on the main shaft of the load adding device, the output end of the pedal cylinder 14 is lowered, causing the hollow connecting sleeve 19 and the fixed block 3 to drop to the lowest end and return to their original state. When it is necessary to adjust the distance between the two chassis strips 1, the threaded rod 35 can be rotated by rotating the turning handle 33. The rotation of the threaded rod 35 drives the limit slider 34 to slide within the limit chute 28, and then can drive the scissor rod 30 to open and close, so as to adjust the distance between the two chassis strips 1. Furthermore, during use, the distance between the two lower support arms 4 and the two upper support arms 16 can be adjusted accordingly according to the diameter of the lifted rim assembly to meet the lifting requirements for rim assemblies of different diameters.

[0050] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Although this specification is described according to the embodiments, not every embodiment only contains one technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wheel rim assembly lifting trolley device for a tire durability testing machine, comprising two chassis bars (1). At one end of each of the two chassis bars (1), a second moving wheel (5) is installed. At the other end of the two chassis bars (1), a first moving wheel (2) is provided. At a position above the first moving wheel (2) on the upper end surface of the chassis bar (1), a wheel cover (6) is fixedly connected. It is characterized in that: On the relative sides of the two chassis bars (1), a first mounting seat (26) is fixedly connected near the bending position of the chassis bar (1). At one end of the relative sides of the two chassis bars (1) away from the second moving wheel (5), a limiting sliding groove (28) is provided. A limiting slider (34) is slidably connected in each limiting sliding groove (28). A second mounting seat (29) is fixedly connected at the position where the limiting slider (34) passes through the chassis bar (1). A scissors rod (30) is installed between the first mounting seat (26) and the second mounting seat (29) on the two chassis bars (1). The ends of the scissors rod (30) are rotatably connected to the second mounting seat (29) and the first mounting seat (26). A central pin (31) is provided at the intersection of the scissors rod (30). Limiting flanges (32) are fixedly connected to both ends of the central pin (31). A fixing plate (27) is fixedly connected to the upper end surface of the limiting flange (32) at the upper end of the central pin (31). An adjusting component for adjusting the distance between the two chassis bars (1) is provided in the limiting sliding groove (28) on one side of the scissors rod (30). Main vertical rods (15) are fixedly connected to the upper end surfaces of the chassis bars (1) near the bending positions. Auxiliary rods (10) are fixedly connected to the upper end surfaces of the chassis bars (1) near the main vertical rods (15). The upper ends of the auxiliary rods (10) are bent and fixedly connected to the main vertical rods (15). A lifting component for lifting the wheel rim is provided between the two main vertical rods (15). A driving component for driving the lifting component to lift and lower is further provided on the upper end surface of the fixing plate (27).

2. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 1, characterized in that, The adjusting component includes a threaded rod (35). The threaded rod (35) is rotatably connected in the limiting sliding groove (28). The limiting sliding groove (28) is threadedly connected to the limiting slider (34). A rotating handle (33) is fixedly connected at the position where the connecting shaft head at one end of the threaded rod (35) passes through the chassis bar (1).

3. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 1, characterized in that, The lifting component includes two fixing plates (7). Four limit rollers (36) arranged in a rectangular pattern are provided on one side of each of the two fixing plates (7). The fixing plates (7) are connected to the main vertical rods (15) through the four limit rollers (36). Fixed blocks (3) are fixedly connected to one ends of the relative sides of the two fixing plates (7) near the second moving wheel (5). Lower support arms (4) are fixedly connected to the lower sides of the fixed blocks (3) away from the main vertical rods (15). Slide rails (9) are fixedly connected to the upper end surfaces of the two fixed blocks (3). Sliding sleeves (8) are slidably connected on the slide rails (9). Upper support arms (16) are fixedly connected to the upper sides of the sliding sleeves (8) away from the main vertical rods (15). A connecting component for connecting the two fixed blocks (3) is further provided between the two fixed blocks (3).

4. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 3, characterized in that, The connecting component includes a hollow connecting sleeve (19), the hollow connecting sleeve (19) is arranged at the middle position between two fixed blocks (3), both the upper and lower ends on both sides of the hollow connecting sleeve (19) are rotatably connected with connecting arm rods (18), two adapter seats (17) are arranged on the opposite sides of the fixed blocks (3), and the ends of the connecting arm rods (18) on both sides of the fixed blocks (3) away from the hollow connecting sleeve (19) are respectively rotatably connected with the adapter seats (17).

5. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 4, characterized in that, The driving component includes a mounting base plate (25), the mounting base plate (25) is fixedly connected to the upper end surface of a fixed disk (27), a pedal-operated oil cylinder (14) is mounted on the upper end surface of the fixed disk (27), a fixed sleeve (21) is fixedly connected to the upper end of the cylinder body of the pedal-operated oil cylinder (14), a limiting component for limiting the pedal-operated oil cylinder (14) is arranged on both sides of the fixed sleeve (21), and a pulling component for driving the hollow connecting sleeve (19) to move up and down is arranged on the pedal-operated oil cylinder (14).

6. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 5, characterized in that, The limiting component includes four rotating seats (24), the four rotating seats (24) are respectively fixedly connected to the upper and lower positions on both side surfaces of the fixed sleeve (21), connecting frame rods (22) are rotatably connected to the rotating seats (24), the ends of the connecting frame rods (22) away from the fixed sleeve (21) are rotatably connected with sliding seats (23), and the sliding seats (23) are respectively in sliding connection with the auxiliary rods (10).

7. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 5, characterized in that, The pulling component includes a wheel frame (11), the wheel frame (11) is fixedly connected to the output end of the pedal-operated oil cylinder (14), a sprocket (12) is rotatably connected in the wheel frame (11), a chain (13) is mounted on the sprocket (12), one end of the chain (13) is fixedly connected to the upper end of the hollow connecting sleeve (19), and the other end of the chain (13) is fixedly connected to the upper end of the fixed sleeve (21).

8. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 3, characterized in that, Fixing knobs for fixing the position of the sliding sleeve (8) are arranged on the sliding sleeves (8).

9. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 1, characterized in that, Push handles (20) are fixedly connected to the upper ends on the side of the auxiliary rods (10) away from the main vertical rod (15).

10. The wheel rim assembly lifting trolley device for a tire durability testing machine according to claim 9, characterized in that, Anti-slip sleeves made of rubber material are wrapped around the grip parts of the push handles (20).

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