A kind of aluminum body suspension system endurance test tooling

Abstract

The utility model relates to a kind of simulation aluminum vehicle body suspension system endurance test tool, including left front, left rear, right front and right L-shaped column, front crossbeam is connected between the two L-shaped columns of left front, right front, rear crossbeam is connected between the two L-shaped columns of left rear, right rear, longitudinal middle crossbeam is connected between front crossbeam and rear crossbeam, two longitudinal side crossbeams are connected between the two L-shaped columns of left front, left rear and between the two L-shaped columns of right front, right rear, adjustable hoisting rod mounting block is installed on the longitudinal side crossbeam of upper side, adjustable hoisting rod mounting block is connected with adjustable hoisting rod, one loading plate is connected below adjustable hoisting rod, loading plate and the wheel hub of vehicle body suspension are connected by stud;The utility model is loaded with the suspension endurance test tool of aluminum vehicle body, so that the stress state of real vehicle suspension is closer when suspension is subjected to fatigue endurance test, and the test result is more accurate, close to real vehicle driving condition.

Description

[Technical Field]

[0001] This utility model relates to the field of automotive parts technology, specifically a tooling for simulating the durability testing of an aluminum vehicle body suspension system. [Background Technology]

[0002] The main function of a car suspension is to transmit the force and torque between the wheels and the frame, buffer road impacts, dampen vibrations, maintain tire contact with the ground, and improve ride comfort and handling stability. In the design and development of the suspension, it is necessary to conduct durability tests on the suspension system to verify its reliability and durability in long-term use. These tests include applying forces in the longitudinal, lateral, and vertical directions as well as during braking conditions, and cycling the system a corresponding number of times in each direction.

[0003] In real vehicles, shock absorbers in suspension systems are bolted to the shock absorber towers on the vehicle body. However, existing suspension system-level durability testing fixtures use a rigid structural block structure as a substitute. Actual vehicle bodies can be made of aluminum or steel, and the different materials used in the body structure have different effects on the suspension system durability test. If the body is completely replaced by a rigid structure, it cannot fully simulate the durability performance of the suspension system, which may lead to discrepancies between the test results and the actual vehicle results, affecting the overall vehicle development and design. [Utility Model Content]

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a fixture for simulating the durability testing of an aluminum vehicle suspension system. This fixture allows the suspension to undergo fatigue durability testing in a way that more closely approximates the stress state of a real vehicle suspension, resulting in more accurate test results that are closer to the actual driving conditions of a real vehicle.

[0005] To achieve the above objectives, a durability test fixture simulating an aluminum vehicle body suspension system is designed, comprising L-shaped pillars 1 located at the left front, left rear, right front, and right rear. A front crossbeam 5 is connected between the two L-shaped pillars 1 located at the left front and right front, and a rear crossbeam 6 is connected between the two L-shaped pillars 1 located at the left rear and right rear. A longitudinal middle crossbeam 7 is connected between the front crossbeam 5 and the rear crossbeam 6. Two longitudinal side crossbeams 8 are connected between the two L-shaped pillars 1 located at the left front and left rear, and between the two L-shaped pillars 1 located at the right front and right rear. An adjustable lifting rod mounting block 9 is installed on the upper longitudinal side crossbeam 8. An adjustable lifting rod 10 is connected to the adjustable lifting rod mounting block 9. A loading plate 11 is connected below the adjustable lifting rod 10. The loading plate 11 is connected to the wheel hub of the vehicle body suspension through studs.

[0006] Furthermore, the L-shaped column 1 is an inverted L-shape, and the bottom end of the L-shaped column 1 is connected to the iron platform 3 through the column base plate 2. The column base plate 2 is provided with reinforcing ribs, which are located around the L-shaped column 1, so that the L-shaped column 1 is placed more stably on the iron platform 3, preventing deviations in the test results due to shaking during the test.

[0007] Furthermore, a subframe fixing module 4 is installed on the rear side of the L-shaped pillar 1 located at the front left and front right, and on the front side of the L-shaped pillar 1 located at the rear left and rear right. The subframe fixing module 4 is used to fix the subframe. The four subframe fixing modules 4 are arranged symmetrically in front, back, left and right, which makes the structure more reliable when fixing the subframe.

[0008] Furthermore, the two longitudinal side beams 8 located between the two L-shaped columns 1 on the left front and left rear are respectively located between the middle and the top outer ends of the two L-shaped columns 1, and the two longitudinal side beams 8 located between the two L-shaped columns 1 on the right front and right rear are respectively located between the middle and the top outer ends of the two L-shaped columns 1, thereby providing a stable installation foundation and the required installation space for the installation of the adjustable hoisting rod mounting block 9 and the adjustable hoisting rod 10.

[0009] Furthermore, it also includes an aluminum shock absorber tower assembly for the vehicle body, which includes a left shock absorber tower 12, a right shock absorber tower 13, and two connecting beams 14 connecting the left shock absorber tower 12 and the right shock absorber tower 13. The two ends of the connecting beams 14 are respectively connected to the left shock absorber tower 12 and the right shock absorber tower 13 through beam supports 15.

[0010] Furthermore, both the left damping tower 12 and the right damping tower 13 are made of aluminum, the connecting beam 14 is made of rectangular steel pipe, and the beam support 15 is an L-shaped steel plate. The connecting beam 14 is bolted to the beam supports 15 at the left and right ends, and the beam supports 15 at the left and right ends are bolted to the left damping tower 12 and the right damping tower 13 respectively. Both the left damping tower 12 and the right damping tower 13 are bolted to the longitudinal side beam 8.

[0011] Furthermore, adjustable lifting rod 10 is equipped with adjustable lifting rod mounting bearings 16 at both the upper and lower ends, and the adjustable lifting rod mounting block 9 and loading plate 11 are respectively connected through the adjustable lifting rod mounting bearings 16.

[0012] Furthermore, the loading plate 11 includes a loading plate body 17, and a loading seat 18 for loading in the braking direction and a loading seat 19 for loading in the longitudinal direction are respectively installed on the bottom and middle part of the front side of the loading plate body 17. A loading seat 20 for loading in the vertical direction and a loading seat 21 for loading in the transverse direction are respectively installed on the top and bottom of the outer side of the loading plate body 17.

[0013] Furthermore, the upper end of the loading plate 11 is connected to the longitudinal side beam 8 via an adjustable hoisting rod 10. When the adjustable hoisting rod 10 is used for transverse and longitudinal tests, its bottom end is fixed to the loading plate 11. When the adjustable hoisting rod 10 is used for vertical tests, its bottom end is disconnected from the loading plate 11.

[0014] Compared with the prior art, this utility model, by using a suspension durability testing fixture with an aluminum body, makes the suspension fatigue durability test more closely resemble the stress state of a real vehicle suspension, resulting in more accurate test results that are closer to the actual driving conditions of a real vehicle. In addition, this utility model can simulate the performance changes of the vehicle body during suspension durability testing and can differentiate between different materials (steel or aluminum) for the vehicle body, making it worthy of widespread application. [Image Description]

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model without the right front pillar;

[0017] Figure 3 This is a structural schematic diagram of the adjustable hoisting rod of this utility model;

[0018] Figure 4 This is a schematic diagram of the loading plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection between the suspension system of this utility model and the aluminum shock absorber tower of the vehicle body via M8 bolts;

[0020] In the diagram: 1. L-shaped column; 2. Column base plate; 3. Iron platform; 4. Subframe fixing module; 5. Front crossbeam; 6. Rear crossbeam; 7. Longitudinal middle crossbeam; 8. Longitudinal side crossbeam; 9. Adjustable lifting rod mounting block; 10. Adjustable lifting rod; 11. Loading plate; 12. Left shock absorber tower; 13. Right shock absorber tower; 14. Connecting crossbeam; 15. Crossbeam bracket; 16. Adjustable lifting rod mounting bearing; 17. Loading plate body; 18. Loading seat when applying brake direction loading; 19. Loading seat when applying longitudinal loading; 20. Loading seat when applying vertical loading; 21. Loading seat when applying lateral loading; 22. M8 nut; 23. Aluminum body shock absorber tower; 24. Suspension shock absorber. [Detailed Implementation]

[0021] As attached Figure 1 To be continued Figure 5As shown, this utility model provides a durability test fixture for simulating an aluminum vehicle body suspension system, including L-shaped pillars 1 located at the left front, left rear, right front, and right rear. A front crossbeam 5 is connected between the two L-shaped pillars 1 located at the left front and right front, and a rear crossbeam 6 is connected between the two L-shaped pillars 1 located at the left rear and right rear. A longitudinal middle crossbeam 7 is connected between the front crossbeam 5 and the rear crossbeam 6. Two longitudinal side crossbeams 8 are connected between the two L-shaped pillars 1 located at the left front and left rear, and between the two L-shaped pillars 1 located at the right front and right rear. An adjustable lifting rod mounting block 9 is installed on the upper longitudinal side crossbeam 8. An adjustable lifting rod 10 is connected to the adjustable lifting rod mounting block 9. A loading plate 11 is connected below the adjustable lifting rod 10. The loading plate 11 is connected to the wheel hub of the vehicle body suspension through studs.

[0022] The L-shaped column 1 is an inverted L-shape. The bottom of the L-shaped column 1 is connected to the iron platform 3 via a column base plate 2. Reinforcing ribs are provided on the column base plate 2 around the L-shaped column 1, ensuring its stability on the iron platform 3 and preventing deviations in test results due to vibration during the test. Subframe fixing modules 4 are installed on the rear sides of the left front and right front L-shaped columns 1, and on the front sides of the left rear and right rear L-shaped columns 1. These subframe fixing modules 4 are used to fix the subframe. Four subframe fixing modules... Block 4 is arranged symmetrically in the front, back, left, and right directions, which makes the structure more reliable when fixing the subframe. The two longitudinal side beams 8 located between the two L-shaped pillars 1 on the left front and left rear are respectively located between the middle and the top outer end of the two L-shaped pillars 1. The two longitudinal side beams 8 located between the two L-shaped pillars 1 on the right front and right rear are respectively located between the middle and the top outer end of the two L-shaped pillars 1. This provides a stable installation foundation and the necessary installation space for the installation of the adjustable lifting rod mounting block 9 and the adjustable lifting rod 10.

[0023] It also includes an aluminum shock absorber tower assembly for the vehicle body. The shock absorber tower assembly includes a left shock absorber tower 12, a right shock absorber tower 13, and two connecting crossbeams 14 connecting the left shock absorber tower 12 and the right shock absorber tower 13. The two ends of the connecting crossbeams 14 are connected to the left shock absorber tower 12 and the right shock absorber tower 13 respectively through crossbeam brackets 15. The left shock absorber tower 12 and the right shock absorber tower 13 are both made of aluminum. The connecting crossbeams 14 are made of rectangular steel tubes. The crossbeam brackets 15 are L-shaped steel plates. The connecting crossbeams 14 are bolted to the crossbeam brackets 15 at the left and right ends. The crossbeam brackets 15 at the left and right ends are bolted to the left shock absorber tower 12 and the right shock absorber tower 13 respectively. The left shock absorber tower 12 and the right shock absorber tower 13 are both bolted to the longitudinal side crossbeams 8.

[0024] Adjustable lifting rod 10 is equipped with adjustable lifting rod mounting bearings 16 at both its upper and lower ends, and is connected to adjustable lifting rod mounting block 9 and loading plate 11 respectively through the adjustable lifting rod mounting bearings 16; the loading plate 11 includes loading plate body 17, with loading seat 18 for braking direction loading and loading seat 19 for longitudinal loading respectively installed at the bottom and middle of the front side of loading plate body 17, and loading seat 20 for vertical loading and loading seat 21 for lateral loading respectively installed at the top and bottom of the outer side of loading plate body 17; the upper end of loading plate 11 is connected to longitudinal side beam 8 through adjustable lifting rod 10, and the bottom end of adjustable lifting rod 10 is fixed to loading plate 11 during lateral and longitudinal tests, and the bottom end of adjustable lifting rod 10 is disconnected from loading plate 11 during vertical tests.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] The present invention discloses a durability testing fixture for a simulated aluminum vehicle body suspension system, comprising four L-shaped pillars 1 located at the front left, rear left, front right, and rear right respectively. The four L-shaped pillars are connected to an iron platform 3 via four pillar feet 2. The four L-shaped pillars have four subframe fixing modules 4 for fixing the subframe. The front left and rear right L-shaped pillars are connected by two front crossbeams 5, and the rear left and rear right L-shaped pillars are connected by two rear crossbeams 6. The front and rear crossbeams are connected by two longitudinal middle crossbeams 7. The front left and rear left L-shaped pillars are connected by two longitudinal side crossbeams 8, and the front right and rear right L-shaped pillars are connected by two longitudinal side crossbeams 8. An adjustable lifting rod mounting block 9 is provided on the upper side crossbeam of the longitudinal side crossbeam 8. An adjustable lifting rod 10 is connected to the adjustable lifting rod mounting block 9, and a loading plate 11 is connected below the adjustable lifting rod 10. The loading plate is connected to the suspension hub via studs.

[0027] The loading plate can be fitted with loading seats in three directions: longitudinal, lateral, and vertical, allowing for load application in all three directions. The loading seats are connected to the output shaft of the test device to simulate the stress conditions experienced by a vehicle during actual driving. The upper end of the loading plate is connected to the aforementioned crossbeam via an adjustable lifting rod. During lateral and longitudinal tests, the bottom end of the adjustable lifting rod is fixed to the loading plate; during vertical tests, the bottom end of the adjustable lifting rod is disconnected from the loading plate. The adjustable lifting rod can simulate the stress on the suspension in its initial state, preloading the suspension.

[0028] Additionally, this fixture includes an aluminum shock absorber tower assembly for the vehicle body. The shock absorber tower assembly comprises a left shock absorber tower 12, a right shock absorber tower 13, two connecting crossbeams 14 connecting the shock absorber towers, and two crossbeam supports 15. The left and right shock absorber towers are made of 6-series aluminum, the two connecting crossbeams are rectangular steel tubes with a cross-section of 20*20mm, and the crossbeam supports are L-shaped steel plates. The two connecting crossbeams are bolted to the left and right crossbeam supports, and then the left and right crossbeam supports are directly bolted to the left and right shock absorber towers respectively. The left and right shock absorber towers are bolted to the test bench, with the connection positions and number consistent with the actual vehicle. The left and right shock absorber towers have four mounting points and are bolted to the shock absorbers of the suspension system.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0030] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A fixture for simulating the durability testing of an aluminum vehicle body suspension system, characterized in that: The system includes L-shaped pillars (1) located at the front left, rear left, front right, and rear right. A front crossbeam (5) is connected between the two L-shaped pillars (1) located at the front left and front right. A rear crossbeam (6) is connected between the two L-shaped pillars (1) located at the rear left and rear right. A longitudinal middle crossbeam (7) is connected between the front crossbeam (5) and the rear crossbeam (6). Two longitudinal side crossbeams (8) are connected between the two L-shaped pillars (1) located at the front left and rear left, and between the two L-shaped pillars (1) located at the front right and rear right. An adjustable hoisting rod mounting block (9) is installed on the upper longitudinal side crossbeam (8). An adjustable hoisting rod (10) is connected to the adjustable hoisting rod mounting block (9). A loading plate (11) is connected below the adjustable hoisting rod (10). The loading plate (11) is connected to the wheel hub of the vehicle suspension through studs.

2. The durability testing fixture for a simulated aluminum vehicle suspension system as described in claim 1, characterized in that: The L-shaped column (1) is an inverted L-shape. The bottom end of the L-shaped column (1) is connected to the iron platform (3) through the column base plate (2). The column base plate (2) is provided with reinforcing ribs, which are located around the L-shaped column (1).

3. The durability testing fixture for a simulated aluminum vehicle suspension system as described in claim 1, characterized in that: Subframe fixing modules (4) are installed on the rear side of the L-shaped pillars (1) located on the left front and right front, and on the front side of the L-shaped pillars (1) located on the left rear and right rear. The subframe fixing modules (4) are used to fix the subframe. The four subframe fixing modules (4) are arranged symmetrically in front, back, left and right.

4. The durability testing fixture for a simulated aluminum vehicle suspension system as described in claim 1, characterized in that: The two longitudinal side beams (8) between the two L-shaped columns (1) located on the left front and left rear are respectively located between the middle part and the top outer end of the two L-shaped columns (1). The two longitudinal side beams (8) between the two L-shaped columns (1) located on the right front and right rear are respectively located between the middle part and the top outer end of the two L-shaped columns (1).

5. The durability testing fixture for a simulated aluminum vehicle body suspension system as described in claim 1, characterized in that: It also includes an aluminum shock absorber tower assembly for the vehicle body, which includes a left shock absorber tower (12), a right shock absorber tower (13), and two connecting beams (14) connecting the left shock absorber tower (12) and the right shock absorber tower (13). The two ends of the connecting beams (14) are connected to the left shock absorber tower (12) and the right shock absorber tower (13) respectively through beam brackets (15).

6. The durability testing fixture for a simulated aluminum vehicle body suspension system as described in claim 5, characterized in that: The left damping tower (12) and the right damping tower (13) are both made of aluminum. The connecting beam (14) is made of rectangular steel pipe. The beam support (15) is an L-shaped steel plate. The connecting beam (14) is bolted to the beam support (15) at the left and right ends. The beam support (15) at the left and right ends is bolted to the left damping tower (12) and the right damping tower (13) respectively. The left damping tower (12) and the right damping tower (13) are both bolted to the longitudinal side beam (8).

7. The durability testing fixture for a simulated aluminum vehicle body suspension system as described in any one of claims 1 to 6, characterized in that: The adjustable hoisting rod (10) is equipped with adjustable hoisting rod mounting bearings (16) at both the upper and lower ends, and the adjustable hoisting rod mounting block (9) and loading plate (11) are respectively connected through the adjustable hoisting rod mounting bearings (16).

8. The durability testing fixture for a simulated aluminum vehicle suspension system as described in claim 7, characterized in that: The loading plate (11) includes a loading plate body (17). The bottom and middle parts of the front side of the loading plate body (17) are respectively equipped with a loading seat (18) for loading in the braking direction and a loading seat (19) for loading in the longitudinal direction. The top and bottom of the outer side of the loading plate body (17) are respectively equipped with a loading seat (20) for loading in the vertical direction and a loading seat (21) for loading in the transverse direction.

9. The durability testing fixture for a simulated aluminum vehicle body suspension system as described in claim 8, characterized in that: The upper end of the loading plate (11) is connected to the longitudinal side beam (8) via an adjustable hoisting rod (10). The bottom end of the adjustable hoisting rod (10) is fixed to the loading plate (11) during transverse and longitudinal tests, and the bottom end of the adjustable hoisting rod (10) is disconnected from the loading plate (11) during vertical tests.

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