New energy electric vehicle wheel durability test tooling

Abstract

The present invention discloses a new energy electric vehicle wheel durability test tool, which belongs to the field of tire detection technology. It comprises a test cabinet and a tire holding mechanism assembled on the inner top wall of the test cabinet, wherein the tire holding mechanism is rotatably connected to the wheel, and the inner top wall of the test cabinet is installed with a road simulation mechanism; through the set road simulation mechanism, simulation of road potholes and friction between the wheel side and the curb is realized, and through the road pothole simulation groove and the side contact component with adjustable angle, key load scenarios such as pothole impact and curb scraping in actual use of the vehicle are accurately reproduced, which significantly improves the boundary condition integrity of the new energy electric vehicle wheel durability test, and at the same time, the road pothole simulation groove drives the side wall seat to move by the positive and negative threaded screws, which can quickly adapt to wheels of different sizes, and the side contact component is equipped with a telescopic rod and an angle-adjusting hydraulic rod to realize flexible adjustment of the position and angle of the curb simulation seat.

Description

Technical Field

[0001] The present invention relates to the technical field of tire testing, and in particular to a tool for durability testing of wheels of new energy electric vehicles. Background Art

[0002] Wheel durability test fixtures are important tools used to perform durability tests on various types of tires, whether they are non-pneumatic or pneumatic. These fixtures can simulate the various load conditions and road conditions that tires are subject to during actual use. In this way, targeted durability tests can be performed on tires to ensure their reliability and safety in actual use.

[0003] The same method is used when conducting durability tests on the wheels of new energy electric vehicles. The existing method mainly uses simulation parts to simulate road conditions. However, the simulation parts currently used have significant limitations: first, they can only simulate the micro-roughness of the road surface and the contact scenes of raised obstacles, and cannot reproduce the dynamic interaction process between the wheel and the road potholes; second, there is a lack of effective simulation capabilities for the collision conditions between the side of the wheel and the curb. In actual use scenarios, vehicles frequently encounter pothole impacts and curb scraping conditions. These key load forms are missing in the existing test system, resulting in significant blind spots in durability verification. The incompleteness of the test boundary conditions may cause the evaluation results to deviate from the actual service performance, thereby affecting the accuracy of the fatigue life prediction of the wheels of new energy electric vehicles. Summary of the Invention

[0004] The purpose of the present invention is to solve the significant limitations of the simulation parts currently used: first, they can only simulate the micro-roughness of the road surface and the contact scenes of raised obstacles, but cannot reproduce the dynamic interaction process between the wheel and the road potholes; second, there is a lack of effective simulation capabilities for the collision conditions between the wheel side and the curb, and thus a new energy electric vehicle wheel durability test tool is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A new energy electric vehicle wheel durability test fixture comprises a test cabinet and a tire retaining mechanism mounted on the inner top wall of the test cabinet, the tire retaining mechanism being rotatably connected to a wheel, and a road simulation mechanism being mounted on the inner top wall of the test cabinet;

[0007] The road simulation mechanism includes a mounting frame and rollers mounted on both ends of the mounting frame. The rollers are sleeved with a road simulation conveyor belt in contact with the wheels. When the road simulation conveyor belt rotates, it drives the wheels to rotate to simulate the road travel process.

[0008] A base plate for supporting a road simulation conveyor belt is mounted on the mounting frame through a sliding slide. A side contact assembly is assembled at the bottom of the slide. The side contact assembly is guided by a guide groove provided at the bottom of the base plate, so as to gradually come into contact with the side of the wheel during the movement of the base plate to perform a side durability test on the wheel.

[0009] As a further description of the above technical solution:

[0010] The road simulation mechanism also includes a pothole simulation groove opened on the surface of the base plate. One side of the inner wall of the mounting frame is equipped with an electric push rod through a bracket, and one end of the electric push rod is connected to the base plate.

[0011] As a further description of the above technical solution:

[0012] Two side wall seats are slidably installed on the bottom wall of the road pit simulation groove. The lower surface of the base plate is rotatably connected to the forward and reverse screw rods through the first bearing seat. The two sides of the outer surface of the forward and reverse screw rods are respectively provided with forward thread sleeves and reverse thread sleeves, and the forward thread sleeves and reverse thread sleeves are respectively connected to the two side wall seats.

[0013] As a further description of the above technical solution:

[0014] The side contact assembly includes a retaining rod fixed to the bottom of the mounting frame, a sliding rod is slidably installed at the bottom of the retaining rod, and the upper surface of the sliding rod is equipped with a guide seat adapted to the guide groove, so that when the guide groove moves from right to left following the base plate, the guide seat can drive the sliding rod to move from back to front along the retaining rod.

[0015] As a further description of the above technical solution:

[0016] One end of the retaining rod is slidingly sleeved with a mounting plate, and one end of the sliding rod is connected to the mounting plate so that the sliding rod can move with the mounting plate. An upper telescopic rod is fixed to the top of one side of the mounting plate, and one end of the upper telescopic rod is rotatably connected to a curb simulation seat.

[0017] As a further description of the above technical solution:

[0018] One side of the curb simulation seat is rotatably connected to an electric hydraulic rod, and one end of the electric hydraulic rod is connected to a mounting plate.

[0019] As a further description of the above technical solution:

[0020] A pad is installed on the bottom of one side of the mounting plate and one side of the mounting frame. A lower telescopic rod is connected to the two pads for common rotation. A spring is sleeved on the outer surface of the lower telescopic rod. Both ends of the spring are respectively connected to the two pads.

[0021] As a further description of the above technical solution:

[0022] The tire holding mechanism includes a horizontal plate fixed on the top wall of the test cabinet, a holding frame fixed to the bottom of the horizontal plate, an adjusting rod slidably installed in the holding frame through a cross slide, a shock absorber is installed on the top of the adjusting rod, the top of the shock absorber is connected to the inner top wall of the cross slide, and one end of the two adjusting rods is commonly connected to a U-shaped frame.

[0023] As a further description of the above technical solution:

[0024] A second bearing seat is installed at the bottom end of the U-shaped frame, and a mounting shaft is commonly assembled in the two second bearing seats, and the wheels are detachably fixed on the mounting shaft.

[0025] As a further description of the above technical solution:

[0026] The top of the U-shaped frame is equipped with a counterweight assembly, which includes a column fixed to the U-shaped frame, a counterweight block sleeved on the column, and a positioning disk sleeved on the top thread of the outer surface of the column.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] The road simulation mechanism simulates road potholes and wheel side-to-curb friction. The pothole simulation groove and the angle-adjustable side contact assembly accurately replicate key load scenarios such as pothole impact and curb scraping experienced during actual vehicle use, significantly improving the integrity of boundary conditions for durability testing of new energy electric vehicle wheels.

[0029] At the same time, the road pothole simulation groove drives the side wall seat to move through the positive and negative threaded screws, which can quickly adapt to wheels of different sizes. The side contact component is equipped with a telescopic rod and an angle adjustment hydraulic rod to achieve flexible adjustment of the position and angle of the road curb simulation seat.

[0030] At the same time, the "pothole subsidence-sidewall friction" composite working condition simulation is achieved through baseplate linkage control: the left and right movement of the baseplate triggers the action of the pothole and the impact of the side contact components, restoring the continuous impact scenario of potholes and curbs on real roads, thereby improving the engineering relevance of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure inside a test cabinet provided in an embodiment of the present invention is shown;

[0032] Figure 2 It shows a partially cutaway structural diagram of a road simulation mechanism according to an embodiment of the present invention;

[0033] Figure 3A schematic diagram of the structural installation of the lower surface of the base plate provided in accordance with an embodiment of the present invention is shown;

[0034] Figure 4 It shows a schematic structural diagram of a partially cut-away bottom plate according to an embodiment of the present invention;

[0035] Figure 5 It shows a schematic diagram of the structural installation of a curb simulation seat provided according to an embodiment of the present invention;

[0036] Figure 6 The embodiment of the present invention provides Figure 4 Enlarged view of point A in the middle;

[0037] Figure 7 It shows a schematic structural diagram of a lower telescopic rod provided according to an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of the disassembled structure of a tire retaining mechanism according to an embodiment of the present invention is shown;

[0039] Figure 9 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown.

[0040] Legend:

[0041] 10. Test cabinet;

[0042] 20. Tire holding mechanism; 21. Holding frame; 22. Adjustment rod; 23. Shock absorber; 24. U-shaped frame; 25. Second bearing seat; 26. Mounting shaft;

[0043] 30. Wheel;

[0044] 40. Road simulation mechanism; 41. Mounting frame; 42. Roller; 43. Road simulation conveyor belt; 44. Slideway; 45. Bottom plate; 46. Guide groove; 47. Side contact assembly; 471. Retaining rod; 472. Slide rod; 473. Guide seat; 474. Mounting plate; 475. Upper telescopic rod; 476. Curb simulation seat; 477. Electric hydraulic rod; 478. Lower telescopic rod; 479. Spring; 48. Pothole simulation groove; 49. Side wall seat; 410. Positive and negative threaded screw; 411. Electric push rod;

[0045] 50. Counterweight assembly; 51. Column; 52. Counterweight block; 53. Positioning plate. DETAILED DESCRIPTION

[0046] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] like Figure 1 - Figure 9 As shown, the present invention provides:

[0048] The new energy electric vehicle wheel durability test tool comprises a test cabinet 10 and a tire holding mechanism 20 mounted on the top wall of the test cabinet 10, wherein a wheel 30 is rotatably connected to the tire holding mechanism 20.

[0049] The tire holding mechanism 20 includes a horizontal plate fixed to the top wall of the test cabinet 10, a holding frame 21 is fixed to the bottom of the horizontal plate, an adjusting rod 22 is slidably installed in the holding frame 21 through a cross slide, a shock absorber 23 is assembled on the top of the adjusting rod 22, the top of the shock absorber 23 is connected to the inner top wall of the cross slide, and one end of the two adjusting rods 22 is commonly connected to a U-shaped frame 24, preferably, a plurality of groups of threaded holes are provided on the outer wall of the adjusting rod 22, and a positioning bolt adapted to the threaded hole is threaded through the top of the outer wall of the U-shaped frame 24, and the adjusting rod 22 can be fixed in the U-shaped frame 24 by the positioning bolt. Similarly, after loosening the positioning bolt, the U-shaped frame 24 can move up and down so that its position can be changed as needed to adapt to wheels 30 of different sizes, and the positioning bolt is tightened after adjustment;

[0050] A second bearing seat 25 is mounted at the bottom end of the U-shaped frame 24. A mounting shaft 26 is mounted in both second bearing seats 25. The wheel 30 is detachably fixed to the mounting shaft 26. In particular, in order to be able to remove the mounting shaft 26, the second bearing seat 25 is a detachable bearing seat, which can be disassembled so that the mounting shaft 26 can be removed from it, and then the wheel 30 can be removed for replacement.

[0051] In further detail, in order to simulate the load of the wheel 30, a counterweight assembly 50 is installed on the top of the U-shaped frame 24. The counterweight assembly 50 includes a column 51 fixed to the U-shaped frame 24, and a counterweight block 52 is sleeved on the column 51. The top thread of the outer surface of the column 51 is sleeved with a positioning plate 53. Specifically, when the wheel 30 is fixed on the mounting shaft 26 and the mounting shaft 26 is assembled in the second bearing seat 25, the weight of the wheel 30 is simulated by adding a counterweight block 52 to the column 51. After the counterweight block 52 is added, the positioning plate 53 is screwed into the column 51 and rotated until it hits the top counterweight block 52, so that the position of the counterweight block 52 is fixed.

[0052] like Figure 1、 Figure 2 and Figure 9 As shown, a road simulation mechanism 40 is installed on the inner top wall of the test cabinet 10. The road simulation mechanism 40 includes a mounting frame 41 and rollers 42 assembled at both ends of the mounting frame 41. The rollers 42 are sleeved with a road simulation conveyor belt 43 in contact with the wheel 30. When the road simulation conveyor belt 43 rotates, the wheel 30 rotates to simulate the road travel process. Specifically, one of the rollers 42 passes through one end of the test cabinet 10 and is fixed with a motor. The motor can drive the roller 42 to rotate the road simulation conveyor belt 43, thereby driving the wheel 30 that is in contact with the belt surface to rotate under the action of friction, thereby simulating the process of the wheel 30 traveling on the road.

[0053] A base plate 45 for supporting a road simulation conveyor belt 43 is slidably mounted on the mounting frame 41 through a slide 44. A side contact assembly 47 is assembled at the bottom of the slide 44. The side contact assembly 47 is guided by a guide groove 46 provided at the bottom of the base plate 45 so as to gradually come into contact with the side of the wheel 30 during the movement of the base plate 45 to perform a side durability test on the wheel 30.

[0054] like Figure 2 and Figure 4 As shown, the road simulation mechanism 40 also includes a pothole simulation groove 48 opened on the surface of the bottom plate 45. One side of the inner wall of the mounting frame 41 is equipped with an electric push rod 411 through a bracket. One end of the electric push rod 411 is connected to the bottom plate 45. Specifically, when the road simulation conveyor belt 43 rotates and drives the wheel 30 to rotate, the bottom plate 45 provides support to the road simulation conveyor belt 43 in real time, so that the wheel 30 is also supported when it hits the conveyor belt and does not sink. In this state, the bottom plate 45 is pushed slowly from right to left by the electric push rod 411. Under the premise of ensuring support, the pothole simulation groove 48 gradually approaches the wheel 30, and then the wheel 30 gradually sinks into the pothole simulation groove 48. After sinking, the bottom plate 45 is pulled to the right to the initial state by the electric push rod 411 to simulate the process of the wheel 30 sinking and moving out when passing through the pothole, so as to observe the friction and the influence of friction on the wheel 30 in this state, and thus reflect its durability.

[0055] In further detail, in order to enable the pothole simulation groove 48 to adapt to wheels 30 of different sizes, two side wall seats 49 are slidably installed on the inner bottom wall of the pothole simulation groove 48. The lower surface of the bottom plate 45 is rotatably connected to a forward and reverse threaded rod 410 through a first bearing seat. The outer surfaces of the forward and reverse threaded rod 410 are respectively sleeved with a forward threaded sleeve and a reverse threaded sleeve. The forward threaded sleeve and the reverse threaded sleeve are respectively connected to the two side wall seats 49.

[0056] Specifically, by rotating the forward and reverse threaded rods 410 , the forward threaded sleeve and the reverse threaded sleeve drive the side wall seats 49 connected thereto to move closer to or further away from each other, thereby enabling the width of the pothole simulation groove 48 to adapt to wheels 30 of different sizes.

[0057] like Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the side contact assembly 47 includes a retaining rod 471 fixed to the bottom of the mounting frame 41. A slide rod 472 is slidably mounted on the bottom of the retaining rod 471. The upper surface of the slide rod 472 is equipped with a guide seat 473 that is compatible with the guide groove 46. When the guide groove 46 moves from right to left following the bottom plate 45, the guide seat 473 can be driven to move along the retaining rod 471 from back to front with the slide rod 472. It is worth noting that the cross-section of the end of the guide groove 46 is T-shaped.

[0058] One end of the retaining rod 471 is slidingly sleeved with a mounting plate 474, and one end of the sliding rod 472 is connected to the mounting plate 474, so that the sliding rod 472 can move with the mounting plate 474, and an upper telescopic rod 475 is fixed to the top of one side of the mounting plate 474, and one end of the upper telescopic rod 475 is rotatably connected to a curb simulation seat 476. Specifically, the moving distance of the mounting plate 474 is constant. In order to enable the curb simulation seat 476 to contact the side of wheels 30 of different sizes after moving a predetermined distance, the length of the upper telescopic rod 475 needs to be adjusted before testing. It is worth noting that the upper telescopic rod 475 can be fixed in position by bolts on its surface after extension and contraction, so that the initial position of the curb simulation seat 476 is changed, so that it can contact the side of the wheel 30 after moving a predetermined distance.

[0059] In further detail, in order to enable the curb simulation seat 476 to have a variety of angles, an electric hydraulic rod 477 is rotatably connected to one side of the curb simulation seat 476. One end of the electric hydraulic rod 477 is connected to the mounting plate 474. The electric hydraulic rod 477 can be used to adjust the angle of the curb simulation seat 476, thereby allowing it to present different angles for friction with the outer wall of the wheel 30.

[0060] Specifically, in the initial state, when the curb simulation seat 476 needs to contact the side of the wheel 30, the electric push rod 411 pulls the bottom plate 45 from left to right. During the movement, the guide seat 473 is driven to move along the retaining rod 471 from back to front with the slide bar 472 under the action of the guide groove 46, and at the same time drives the mounting plate 474 at the end of the slide bar 472 to move together, so that the curb simulation seat 476 gradually approaches the side of the wheel 30 and then contacts the side thereof, thereby rubbing against the rotating wheel 30 to test its side durability;

[0061] In further detail, in order to enable the curb simulation seat 476 to gradually reset during the reset process of the base plate 45, a pad is installed on the bottom of one side of the mounting plate 474 and one side of the mounting frame 41. A lower telescopic rod 478 is connected to the two pads for common rotation. A spring 479 is sleeved on the outer surface of the lower telescopic rod 478. The two ends of the spring 479 are respectively connected to the two pads. In particular, the lower telescopic rod 478 is in a free state and is not restricted by a fixing member such as a bolt. It can be extended and retracted following the compression and expansion of the spring 479, thereby ensuring the state of the spring 479.

[0062] Specifically, after the side durability test of the wheel 30 is completed, the electric push rod 411 pushes the base plate 45 to reset. During this process, under the action of the guide groove 46 and the spring 479, the mounting plate 474 moves from front to back with the curb simulation seat 476, and gradually resets to the initial state.

[0063] Specifically, when this new energy electric vehicle wheel durability test tool is working / in use:

[0064] 1. Preparation before the test

[0065] 1. Installation and positioning of wheel 30

[0066] Loosen the positioning bolts of the U-shaped frame 24 and adjust its height along the cross slot to fit the size of the new energy electric vehicle wheel 30. Then, insert the wheel 30 into the mounting shaft 26 and secure it through the second bearing seat 25 (separable bearing seat). Then, tighten the positioning bolts to lock the position of the U-shaped frame 24. Add or remove the counterweight 52 on the column 51 according to the test requirements and screw it into the positioning plate 53 to secure it.

[0067] 2. Road pothole simulation slot 48 debugging

[0068] Rotate the forward and reverse screw rods 410 to adjust the spacing between the side wall seats 49 so that the width of the pothole simulation groove 48 matches the tread of the wheel 30;

[0069] 3. Side contact assembly 47 configuration

[0070] The length of the upper telescopic rod 475 is adjusted to make the initial position of the curb simulation seat 476 adapt to wheels 30 of different sizes, and the bolts are tightened to fix it. Then, the angle of the curb simulation seat 476 is preset by the electric hydraulic rod 477.

[0071] 2. Test Execution

[0072] 1. Start road simulation

[0073] Turn on the motor to drive the road simulation conveyor belt 43 to rotate, and set the target speed. In this state, monitor the rotation state of the wheel 30 to confirm that there is no abnormal vibration or uneven wear;

[0074] 2. Composite working condition loading

[0075] Pothole simulation: triggering the electric push rod 411 to push the bottom plate 45 to the left, so that the pothole simulation groove 48 gradually acts on the wheel 30 (a periodic movement can be set to simulate a continuous pothole road);

[0076] Sidewall friction: In the initial state, when the bottom plate 45 moves to the right, the guide groove 46 drives the curb simulation seat 476 to press against the side of the wheel 30. At this time, the electric hydraulic rod 477 can be activated to adjust the contact angle;

[0077] 3. Condition monitoring

[0078] The surface wear and structural deformation of the wheel 30 are regularly checked to reflect its durability (a high-speed camera can be used to record the dynamic process).

[0079] 3. Post-test operation

[0080] Tooling reset

[0081] The bottom plate 45 is pulled back to the initial position by the electric push rod 411, and the spring 479 mechanism drives the curb simulation seat 476 to reset, then the conveyor motor is turned off, the counterweight 52 is unloaded and the test wheel 30 is taken out.

[0082] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A new energy electric vehicle wheel durability test tool, comprising a test cabinet (10) and a tire holding mechanism (20) mounted on the top wall of the test cabinet (10), wherein a wheel (30) is rotatably connected to the tire holding mechanism (20), characterized in that: A road simulation mechanism (40) is installed on the inner top wall of the test cabinet (10); The road simulation mechanism (40) includes a mounting frame (41) and rollers (42) mounted on both ends of the mounting frame (41). The rollers (42) are sleeved with road simulation conveyor belts (43) in contact with the wheels (30). When the road simulation conveyor belts (43) rotate, the wheels (30) are driven to rotate to simulate the road travel process. A bottom plate (45) for supporting a road simulation conveyor belt (43) is slidably mounted on the mounting frame (41) via a slideway (44). A side contact assembly (47) is mounted at the bottom of the slideway (44). The side contact assembly (47) is guided by a guide groove (46) provided at the bottom of the bottom plate (45) so as to gradually contact the side of the wheel (30) during the movement of the bottom plate (45) to perform a side durability test on the wheel (30). The side contact assembly (47) includes a retaining rod (471) fixed to the bottom of the mounting frame (41), a slide rod (472) is slidably mounted on the bottom of the retaining rod (471), and a guide seat (473) adapted to the guide groove (46) is assembled on the upper surface of the slide rod (472), so that when the guide groove (46) moves from right to left following the bottom plate (45), the guide seat (473) can be driven to move along the retaining rod (471) from back to front with the slide rod (472); One end of the retaining rod (471) is slidably sleeved with a mounting plate (474), one end of the sliding rod (472) is connected to the mounting plate (474), so that the sliding rod (472) can move with the mounting plate (474), and an upper telescopic rod (475) is fixed to the top of one side of the mounting plate (474), and one end of the upper telescopic rod (475) is rotatably connected to a curb simulation seat (476); One side of the curb simulation seat (476) is rotatably connected to an electric hydraulic rod (477), and one end of the electric hydraulic rod (477) is connected to the mounting plate (474); The bottom of one side of the mounting plate (474) and one side of the mounting frame (41) are both installed with pads, and a lower telescopic rod (478) is connected to the two pads for rotation. The outer surface of the lower telescopic rod (478) is provided with a spring (479), and the two ends of the spring (479) are respectively connected to the two pads.

2. The new energy electric vehicle wheel durability test tool according to claim 1, characterized in that: The road simulation mechanism (40) further includes a pothole simulation groove (48) provided on the surface of the base plate (45); an electric push rod (411) is mounted on one side of the inner wall of the mounting frame (41) via a bracket; one end of the electric push rod (411) is connected to the base plate (45).

3. The new energy electric vehicle wheel durability test tool according to claim 2, characterized in that: Two side wall seats (49) are slidably mounted on the inner bottom wall of the road pit simulation groove (48); the lower surface of the base plate (45) is rotatably connected to a forward and reverse threaded rod (410) via a first bearing seat; both sides of the outer surface of the forward and reverse threaded rod (410) are respectively sleeved with a forward threaded sleeve and a reverse threaded sleeve, and the forward threaded sleeve and the reverse threaded sleeve are respectively connected to the two side wall seats (49).

4. The new energy electric vehicle wheel durability test tool according to claim 1, characterized in that: The tire holding mechanism (20) comprises a horizontal plate fixed on the inner top wall of the test cabinet (10), a holding frame (21) is fixed at the bottom of the horizontal plate, an adjusting rod (22) is slidably installed in the holding frame (21) through a cross slide, a shock absorber (23) is assembled on the top of the adjusting rod (22), the top end of the shock absorber (23) is connected to the inner top wall of the cross slide, and one end of the two adjusting rods (22) is commonly connected to a U-shaped frame (24).

5. The new energy electric vehicle wheel durability test tool according to claim 4, characterized in that: A second bearing seat (25) is installed at the bottom end of the U-shaped frame (24), and a mounting shaft (26) is commonly assembled in the two second bearing seats (25), and the wheel (30) is detachably fixed on the mounting shaft (26).

6. The new energy electric vehicle wheel durability test tool according to claim 5, characterized in that: A counterweight assembly (50) is assembled on the top of the U-shaped frame (24), and the counterweight assembly (50) includes a column (51) fixed to the U-shaped frame (24), a counterweight block (52) is sleeved on the column (51), and a positioning plate (53) is sleeved on the top thread of the outer surface of the column (51).

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