Device for testing quasi-static extrusion damage resistance of aluminum alloy wheel
By using multiple guide components and limit plates to fix the wheel in the wheel test device, the problem of wheel offset or rotation during the test is solved, and the accuracy of test results and the accurate acquisition of mechanical performance data is achieved.
Patent Information
- Application Number
- CN202422620139.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-29
AI Technical Summary
In the prior art, the wheel test tool lacks a positioning structure or the positioning structure has poor stability under large pressure, resulting in the wheel being easily offset or rotated during the test, affecting the accuracy of the test results.
A test device for quasi-static extrusion resistance of aluminum alloy wheels is designed, multiple guide components are used to adjust the height of the top plate, and the wheel is fixed by using an axial limiting plate and a circumferential clamping plate. The coaxial connection between the positioning column and the central hole of the spoke is ensured that the wheel does not shift or rotate during the test.
By fixing the position of the wheel, the accuracy of the test results can be ensured, and the force and damage resistance of the wheel can be accurately simulated when the wheel crashes in front, and the mechanical performance data of the wheel can be obtained.
Smart Images
Figure CN223259267U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wheel performance detection, and more specifically relates to a quasi-static extrusion anti-destruction ability testing device for aluminum alloy wheels. Background Art
[0002] To meet increasingly stringent domestic automotive crash safety requirements and improve vehicle safety performance, automakers are now considering more demanding crash test conditions when developing new models. Among these tests, the 25% frontal offset crash test is one of the most demanding.
[0003] In a 25% frontal offset collision test, the vehicle and the rigid barrier only overlap by 25%, and the vehicle is required to collide with the fixed rigid barrier at a speed of 64 km / h. Since the collision overlap between the vehicle and the barrier is only 25%, important parts of the vehicle body that resist external forces, such as the front bumper and the front longitudinal beam of the vehicle body, basically cannot play a protective role. The rigid barrier will directly hit the wheels, and the collision force will be transmitted to the body through the wheels. At the same time, the wheels themselves will be damaged and deformed during the collision, resulting in relatively complex external forces transmitted to the body through the wheels. In some more demanding situations, the wheels will transmit greater external forces to the body, resulting in greater deformation of the body after the collision, and ultimately causing greater injuries to the occupants in the vehicle. This shows that the wheels have a greater impact in the 25% frontal offset collision test.
[0004] In existing technology, quasi-static extrusion tests on wheels are typically performed using a combination of a pressure testing machine and a test fixture. This simulates the forces and damage resistance of a wheel subjected to a head-on impact. Force-deformation curves are then collected to obtain mechanical performance data for the test wheel, accurately demonstrating the forces acting on the wheel during its elastic, deformation, and fracture stages. However, in actual tests, the test fixture lacks a positioning mechanism or its positioning mechanism exhibits poor stability under high pressure, which can easily cause the wheel to shift or rotate during the test, affecting the final test results. Utility Model Content
[0005] The purpose of the utility model is to provide a quasi-static extrusion anti-destructive capacity test device for aluminum alloy wheels, aiming to solve the problem that the test tooling lacks a positioning structure or the positioning structure has poor stability under high pressure, which easily causes the wheel to deflect or rotate during the test and affects the final test results.
[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an aluminum alloy wheel quasi-static extrusion anti-destructive ability test device, including a test fixture, the test fixture includes a bottom plate, a top plate and a pressure mechanism, the top plate is arranged above the bottom plate through a plurality of longitudinally arranged guide components, the pressure mechanism is arranged on the top plate, the pressure end of the pressure mechanism is located at the lower end of the top plate, the lower end face of the pressure end is provided with an upper pressure plate, the upper end face of the bottom plate is provided with a lower pressure plate, the lower end face of the upper pressure plate is symmetrically provided with a first axial limit plate in the left-right direction, the upper end face of the lower pressure plate is symmetrically provided with a second axial limit plate in the left-right direction, and the two first axial limit plates are used for clamping On both sides of the upper axial direction of the wheel, two second axial limit plates are used to be clamped on both sides of the lower axial direction of the wheel, and a first circumferential clamping plate is provided in the front and rear directions of the lower end face of the upper pressure plate, and a second circumferential clamping plate is provided in the front and rear directions of the upper end face of the lower pressure plate, the two first circumferential clamping plates are used to abut against both sides of the upper outer circle of the wheel, and the two second circumferential clamping plates are used to abut against both sides of the lower outer circle of the wheel, a support frame is provided on one side of the upper end face of the bottom plate, and a positioning column is provided on the support frame which can be raised and lowered horizontally, and a positioning end head is provided at an inner end of the positioning column, and a positioning hole is provided at an inner end of the positioning end head, and the positioning hole is used to coaxially connect the spoke center hole of the wheel through a connecting piece.
[0007] In a possible implementation, a longitudinal slide groove and a transverse slide groove are provided on the upper end surface of the base plate, and a slider is provided at the lower end of the lower pressure plate, and the slider slides with the longitudinal slide groove and the transverse slide groove.
[0008] In a possible implementation, the pressure mechanism is a hydraulic press, which is installed on the upper end surface of the top plate. The pressure end of the lower portion of the hydraulic press passes through the top plate and is connected to the upper end surface of the upper pressure plate.
[0009] In one possible implementation, the guide assembly includes a guide rod and a guide sleeve, the guide sleeve is vertically arranged on the upper end surface of the base plate, and the guide rod is correspondingly arranged on the lower end surface of the top plate, and the guide rod and the guide sleeve are plug-assembled and axially slidable.
[0010] In one possible implementation, the first axial limiting plate includes a first transverse plate and a first longitudinal plate, the first transverse plate can be laterally slidably arranged on the lower end surface of the upper pressure plate, and the first longitudinal plate is vertically arranged at the inner end of the first transverse plate; the second axial limiting plate includes a second transverse plate and a second longitudinal plate, the second transverse plate can be laterally slidably arranged on the upper end surface of the lower pressure plate, and the second longitudinal plate is vertically arranged at the inner end of the second transverse plate.
[0011] In one possible implementation, the inner side of the lower end surface of the first circumferential clamping plate has a first inclined clamping surface, and the distance between the two first inclined clamping surfaces increases from top to bottom; the inner side of the upper end surface of the second circumferential clamping plate has a second inclined clamping surface, and the distance between the two second inclined clamping surfaces increases from bottom to top.
[0012] In a possible implementation, the support frame includes two support rods arranged side by side, and the two support rods are sleeved with adjustment sleeves. The positioning column passes through the adjustment sleeves transversely and is threadably engaged with the adjustment sleeves.
[0013] In one possible implementation, the positioning column includes an adjusting rod, a connecting shaft and a sleeve. The adjusting rod passes through the adjusting sleeve and is threadedly engaged with the adjusting sleeve. The connecting shaft is coaxially installed on the inner end of the adjusting rod through a positioning pin. The sleeve is sleeved at the junction of the adjusting rod and the connecting shaft. The end of the connecting shaft away from the adjusting rod is threadedly connected to the positioning end.
[0014] In one possible implementation, a fastening disk is provided at one outer end of the positioning end head, the fastening disk is sleeved on the outer circumference of the connecting shaft and is axially positioned by means of a stepped platform on the connecting shaft, and the fastening disk is connected to the positioning end head by a plurality of circumferential bolts.
[0015] In a possible implementation, a circular boss is provided at one inner end of the positioning end head, and the positioning hole is opened along the axial direction of the circular boss.
[0016] The beneficial effect of the quasi-static extrusion anti-destructive capacity test device for aluminum alloy wheels provided by the utility model is as follows: compared with the prior art, first, the height of the top plate is adjusted by multiple guide assemblies, sufficient space is reserved in the wheel height direction, the wheel is placed longitudinally on the bottom plate, the two sides of the lower outer circle of the wheel respectively abut against the two second circumferential clamping plates, and the two axial sides of the lower side of the wheel are respectively clamped between the two second axial limit plates. The pressure mechanism drives the upper pressure plate to descend so that the two first circumferential clamping plates on the lower end face of the upper pressure plate respectively abut against the two sides of the upper outer circle of the wheel, and the two first axial limit plates are respectively clamped on the two axial sides of the upper side of the wheel. Then, the height of the positioning column is adjusted so that the positioning end of the inner end of the positioning column is aligned with the center hole of the wheel spoke, and the positioning hole and the center hole of the wheel spoke are coaxially connected by a connector, finally completing the installation and fixation of the wheel on the test device. Finally, the pressure mechanism drives the upper pressure plate to continue moving downward, gradually applying pressure to the wheel, thereby completing the quasi-static extrusion test of the wheel. The force and anti-destruction ability of the wheel when subjected to a head-on collision are simulated according to the deformation or damage degree of the wheel. By collecting the force-deformation curve, the mechanical performance data of the test wheel are obtained, accurately showing the force conditions of the wheel during the elastic, deformation, and fracture stages. The quasi-static extrusion anti-destruction ability test device for aluminum alloy wheels provided by the utility model limits the axial displacement or tilt of the wheel through two first axial limit plates and two second axial limit plates, limits the circumferential rotation of the wheel through two first circumferential clamping plates and two second circumferential clamping plates, and further limits the position of the wheel by coaxially connecting the positioning hole and the center hole of the spoke through a connector, thereby preventing the wheel from shifting or rotating during the test and ensuring the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 This is a front view of the quasi-static extrusion anti-destructive ability test device for aluminum alloy wheels provided by the utility model;
[0019] Figure 2 A side view of the quasi-static extrusion anti-destructive ability test device for aluminum alloy wheels provided by the utility model;
[0020] Figure 3 for Figure 1 A local enlarged view of point M in the middle.
[0021] In the figure: 1. bottom plate; 2. top plate; 3. pressure mechanism; 4. guide rod; 5. guide sleeve; 6. longitudinal slide; 7. transverse slide; 8. first transverse plate; 9. first longitudinal plate; 10. second transverse plate; 11. second longitudinal plate; 12. first circumferential clamping plate; 13. first inclined clamping surface; 14. second circumferential clamping plate; 15. second inclined clamping surface; 16. support rod; 17. adjusting sleeve; 18. adjusting rod; 19. connecting shaft; 20. sleeve; 21. fastening disk; 22. positioning end; 23. circular boss; 24. positioning hole. DETAILED DESCRIPTION
[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0023] Unless otherwise explicitly defined, the use of terms such as "first," "second," or "third," etc., are intended to distinguish different objects rather than to describe a specific order.
[0024] Unless otherwise expressly defined, directional words such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific scope of protection of the present invention.
[0025] See also Figures 1 to 3, the quasi-static extrusion anti-destructive ability test device for aluminum alloy wheels provided by the present invention is now described. The quasi-static extrusion anti-destructive ability test device for aluminum alloy wheels includes a test fixture, and the test fixture includes a bottom plate 1, a top plate 2 and a pressure mechanism 3. The top plate 2 is arranged above the bottom plate 1 through a plurality of longitudinally arranged guide components, and the pressure mechanism 3 is arranged on the top plate 2. The pressure end of the pressure mechanism 3 is located at the lower end of the top plate 2, and the lower end face of the pressure end is provided with an upper pressure plate, and the upper end face of the bottom plate 1 is provided with a lower pressure plate. The lower end face of the upper pressure plate is symmetrically provided with a first axial limit plate in the left-right direction, and the upper end face of the lower pressure plate is symmetrically provided with a second axial limit plate in the left-right direction. The two first axial limit plates are used to be clamped on both sides of the upper axial direction of the wheel, and the two second axial limit plates are used to be clamped on both sides of the upper axial direction of the wheel. The positioning plate is used to be clamped on both sides of the lower axial direction of the wheel. A first circumferential clamping plate 12 is provided on the front and rear directions of the lower end face of the upper pressure plate, and a second circumferential clamping plate 14 is provided on the front and rear directions of the upper end face of the lower pressure plate. The two first circumferential clamping plates 12 are used to abut against the two sides of the upper outer circle of the wheel, and the two second circumferential clamping plates 14 are used to abut against the two sides of the lower outer circle of the wheel. A support frame is provided on one side of the upper end face of the base plate 1, and a positioning column is provided on the support frame which can be raised and lowered horizontally. A positioning end head 22 is provided on the inner end of the positioning column, and a positioning hole 24 is opened on the inner end of the positioning end head 22. The positioning hole 24 is used to be coaxially connected to the center hole of the spoke of the wheel through a connecting piece.
[0026] Compared with the prior art, the quasi-static extrusion anti-destructive capacity test device for aluminum alloy wheels provided by the present invention first adjusts the height of the top plate 2 through multiple guide assemblies, leaving sufficient space in the wheel height direction. The wheel is then placed longitudinally on the bottom plate 1, with the lower outer circumference of the wheel resting on the two second circumferential clamping plates 14, and the axial sides of the lower side of the wheel are respectively clamped between the two second axial limit plates. The pressure mechanism 3 drives the upper pressure plate downward so that the two first circumferential clamping plates 12 on the lower end face of the upper pressure plate rest on the outer circumference of the wheel, and the two first axial limit plates are respectively clamped on the axial sides of the wheel. The height of the positioning column is then adjusted so that the positioning end 22 at the inner end of the positioning column is aligned with the center hole of the wheel spoke. The positioning hole 24 and the center hole of the wheel spoke are coaxially connected by a connector, and the wheel is finally installed and fixed in the test device. Finally, the pressure mechanism 3 drives the upper pressure plate to continue moving downward, gradually applying pressure to the wheel, thereby completing the quasi-static extrusion test of the wheel. The force and anti-destruction ability of the wheel when subjected to a head-on collision are simulated based on the deformation or damage degree of the wheel. By collecting the force-deformation curve, the mechanical performance data of the test wheel are obtained, accurately showing the force conditions of the wheel during the elastic, deformation, and fracture stages. The quasi-static extrusion anti-destruction ability test device for aluminum alloy wheels provided by the utility model uses two first axial limit plates and two second axial limit plates to limit the axial displacement or tilt of the wheel, two first circumferential clamping plates 12 and two second circumferential clamping plates 14 to limit the circumferential rotation of the wheel, and a connector coaxially connects the positioning hole 24 with the spoke center hole to further limit the position of the wheel, prevent the wheel from shifting or rotating during the test, and ensure the accuracy of the test results.
[0027] See also Figures 1 to 2 The upper end surface of the bottom plate 1 is provided with a longitudinal chute 6 and a transverse chute 7. The lower end of the lower pressure plate is provided with a slider, which slides with the longitudinal chute 6 and the transverse chute 7. The longitudinal chute 6 and the transverse chute are both T-shaped slots, and the slider is also a T-shaped block. The T-shaped block slides in the T-shaped slot to achieve left-right and front-back adjustment of the bottom plate 1.
[0028] The pressure mechanism 3 is a hydraulic press, which is installed on the upper end surface of the top plate 2. The pressure end of the lower part of the hydraulic press passes through the top plate 2 and is connected to the upper end surface of the upper pressure plate.
[0029] The guide assembly includes a guide rod 4 and a guide sleeve 5. The guide sleeve 5 is vertically arranged on the upper end surface of the base plate 1, and the guide rod 4 is correspondingly arranged on the lower end surface of the top plate 2. The guide rod 4 and the guide sleeve 5 are plug-in assembled and can slide axially, which can improve the stability of the top plate 2 during height adjustment.
[0030] Specifically, the first axial limiting plate includes a first transverse plate 8 and a first longitudinal plate 9. The first transverse plate 8 can be slid laterally on the lower end surface of the upper pressure plate, and the first longitudinal plate 9 is vertically arranged at the inner end of the first transverse plate 8. The second axial limiting plate includes a second transverse plate 10 and a second longitudinal plate 11. The second transverse plate 10 can be slid laterally on the upper end surface of the lower pressure plate, and the second longitudinal plate 11 is vertically arranged at the inner end of the second transverse plate 10. The first transverse plate 8 and the second transverse plate 10 are both horizontally provided with strip holes. When the first transverse plate 8 and the second transverse plate 10 are adjusted into position laterally, they are tightened by fastening bolts passing through the strip holes and screwed into the reserved threaded holes on the upper or lower pressure plate, thereby achieving the positioning of wheels with different rim widths (different axial lengths).
[0031] The first circumferential clamping plate 12 has a first inclined clamping surface 13 on its inner side at its lower end, with the spacing between the two first inclined clamping surfaces 13 increasing from top to bottom. The second circumferential clamping plate 14 has a second inclined clamping surface 15 on its inner side at its upper end, with the spacing between the two second inclined clamping surfaces 15 increasing from bottom to top. The two first inclined clamping surfaces 13 respectively abut against the upper outer circumference of the wheel, while the two second inclined clamping surfaces 15 respectively abut against the lower outer circumference of the wheel. Together, the two first inclined clamping surfaces 13 and the two second inclined clamping surfaces 15 clamp the upper and lower outer circumferences of the wheel, ensuring that the wheel does not rotate when squeezed.
[0032] See also Figure 1 and Figure 2 The support frame includes two side-by-side support rods 16, the lower ends of which are fixed to one side of the upper end surface of the base plate 1. Adjustment sleeves 17 are mounted on the two support rods 16. These sleeves 17 can slide along the height of the support rods 16 and can be locked in place at any position using a locking pin. A positioning post extends transversely through the adjustment sleeves 17 and is threadedly engaged with them. Rotation of the positioning post moves the positioning end 22 closer to or further from the wheel, thereby accommodating the positioning of different wheel models on the test rig.
[0033] See also Figure 3 The positioning column includes an adjustment rod 18, a connecting shaft 19, and a sleeve 20. The adjustment rod 18 extends through the adjustment sleeve 17 and is threadedly engaged with the adjustment sleeve 17. The connecting shaft 19 is coaxially mounted on the inner end of the adjustment rod 18 via a locating pin, ensuring that the adjustment rod 18 and the connecting shaft 19 can rotate synchronously. The sleeve 20 is mounted at the junction of the adjustment rod 18 and the connecting shaft 19, shielding the locating pin and preventing it from falling out. The end of the connecting shaft 19 away from the adjustment rod 18 is threadedly connected to the positioning terminal 22.
[0034] Specifically, a fastening plate 21 is provided at one end of the outer side of the positioning end 22. The fastening plate 21 fits over the outer circumference of the connecting shaft 19 and is axially positioned by means of a stepped portion on the connecting shaft 19. The fastening plate 21 and the positioning end 22 are connected by multiple circumferential bolts. The fastening plate 21 is connected to the positioning end 22 via multiple bolts. The positioning hole 24 of the positioning end 22 is axially aligned with the center hole of the spoke from one side. A connector is then used to penetrate the center hole of the spoke from the other side and connect to the positioning hole 24.
[0035] Specifically, the positioning hole 24 is a threaded hole, and the connecting piece is a locking bolt. The locking bolt passes through the center hole of the spoke and is threadedly connected to the threaded hole to axially lock the wheel.
[0036] A circular boss 23 is provided at one inner end of the positioning end 22, and a positioning hole 24 is defined axially along the circular boss 23. The outer diameter of the circular boss 23 is smaller than the inner diameter of the spoke center hole, and a portion of the circular boss 23 penetrates into the spoke center hole. The circular boss 23 provides initial positioning between the positioning end 22 and the spoke center hole. The circular boss 23 also increases the depth of the positioning hole 24, allowing it to accommodate locking bolts of different lengths.
[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. Aluminum alloy wheel quasi-static extrusion anti-destructive ability test device, characterized by: The test fixture comprises a bottom plate (1), a top plate (2) and a pressure mechanism (3), wherein the top plate (2) is arranged above the bottom plate (1) through a plurality of longitudinally arranged guide assemblies, and the pressure mechanism (3) is arranged on the top plate (2), and the pressure end of the pressure mechanism (3) is located at the lower end of the top plate (2), and the lower end face of the pressure end is provided with an upper pressure plate, and the upper end face of the bottom plate (1) is provided with a lower pressure plate, and the lower end face of the upper pressure plate is symmetrically provided with a first axial limit plate in the left-right direction, and the upper end face of the lower pressure plate is symmetrically provided with a second axial limit plate in the left-right direction, the two first axial limit plates are used to be clamped on both sides of the upper axial direction of the wheel, and the two second axial limit plates are used to be clamped The lower end face of the upper pressure plate is provided with a first circumferential clamping plate (12) in the front-rear direction, and the upper end face of the lower pressure plate is provided with a second circumferential clamping plate (14) in the front-rear direction. The two first circumferential clamping plates (12) are used to abut against the upper outer circle of the wheel, and the two second circumferential clamping plates (14) are used to abut against the lower outer circle of the wheel. A support frame is provided on one side of the upper end face of the bottom plate (1). A positioning column is provided on the support frame in a liftable and transverse manner. A positioning terminal (22) is provided at the inner end of the positioning terminal (22). A positioning hole (24) is provided at the inner end of the positioning terminal. The positioning hole (24) is used to coaxially connect to the spoke center hole of the wheel through a connecting piece.
2. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 1, characterized in that: The upper end surface of the base plate (1) is provided with a longitudinal slide groove (6) and a transverse slide groove (7), and the lower end of the lower pressure plate is provided with a slider, and the slider is slidably matched with the longitudinal slide groove (6) and the transverse slide groove (7).
3. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 1, characterized in that: The pressure mechanism (3) is a hydraulic press, which is installed on the upper end surface of the top plate (2). The pressure end of the lower part of the hydraulic press passes through the top plate (2) and is connected to the upper end surface of the upper pressure plate.
4. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 1, characterized in that: The guide assembly comprises a guide rod (4) and a guide sleeve (5), wherein the guide sleeve (5) is vertically arranged on the upper end surface of the bottom plate (1), and the guide rod (4) is correspondingly arranged on the lower end surface of the top plate (2), and the guide rod (4) and the guide sleeve (5) are plug-fitted and axially slidable.
5. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 1, characterized in that: The first axial limiting plate includes a first transverse plate (8) and a first longitudinal plate (9), the first transverse plate (8) can be laterally slidably arranged on the lower end surface of the upper pressure plate, and the first longitudinal plate (9) is vertically arranged on the inner end of the first transverse plate (8); the second axial limiting plate includes a second transverse plate (10) and a second longitudinal plate (11), the second transverse plate (10) can be laterally slidably arranged on the upper end surface of the lower pressure plate, and the second longitudinal plate (11) is vertically arranged on the inner end of the second transverse plate (10).
6. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 1, characterized in that: The inner side of the lower end surface of the first circumferential clamping plate (12) is provided with a first inclined clamping surface (13), and the distance between the two first inclined clamping surfaces (13) increases from top to bottom; the inner side of the upper end surface of the second circumferential clamping plate (14) is provided with a second inclined clamping surface (15), and the distance between the two second inclined clamping surfaces (15) increases from bottom to top.
7. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 1, characterized in that: The support frame comprises two support rods (16) arranged side by side, and the two support rods (16) are sleeved with adjustment sleeves (17). The positioning column passes through the adjustment sleeves (17) transversely and is threadedly engaged with the adjustment sleeves (17).
8. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 7, characterized in that: The positioning column includes an adjusting rod (18), a connecting shaft (19) and a sleeve (20); the adjusting rod (18) passes through the adjusting sleeve (17) and is threadedly engaged with the adjusting sleeve (17); the connecting shaft (19) is coaxially mounted on one end of the inner side of the adjusting rod (18) through a positioning pin; the sleeve (20) is sleeved at the junction of the adjusting rod (18) and the connecting shaft (19); and the end of the connecting shaft (19) away from the adjusting rod (18) is threadedly connected to the positioning end (22).
9. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 8, characterized in that: A fastening disc (21) is provided at one outer end of the positioning end head (22). The fastening disc (21) is fitted onto the outer periphery of the connecting shaft (19) and is axially positioned by means of a stepped platform on the connecting shaft (19). The fastening disc (21) and the positioning end head (22) are connected via a plurality of circumferential bolts.
10. The quasi-static extrusion damage resistance testing device for aluminum alloy wheels according to claim 9, characterized in that: A circular boss (23) is provided at one inner end of the positioning end head (22), and the positioning hole (24) is opened along the axial direction of the circular boss (23).