Fixing device for static torsion test of drive axle assembly
By designing a static torsion test fixture for automotive reducer assembly, semi-axle and frame, the problem of difficulty in conducting overall static torsion test in the prior art is solved, and a more accurate static torsion safety factor evaluation and the effect of reducing road test costs is achieved.
Patent Information
- Application Number
- CN202421253323.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-06-04
AI Technical Summary
It is difficult for the prior art to conduct static and torsion tests of the vehicle reducer assembly, semi-axle and frame as a whole, resulting in inaccurate static and torsion safety coefficient and increase road test costs.
A static and torsion test fixing device for driving axle assembly is designed. By fixing the reducer assembly and half-axle on the frame, and using a specific connecting structure and support device, the reducer assembly, half-axle and frame are integrally fixed to achieve static and torsion test.
The overall static and torsion test of the reducer assembly, semi-axle and frame is realized, and a more accurate static and torsion safety factor is obtained, which reduces the cost of road tests and improves the installation and disassembly efficiency.
Smart Images
Figure CN223037575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of static torsion bench tests of drive axle assemblies, and particularly relates to a fixing device for static torsion tests of drive axle assemblies. Background Art
[0002] An automotive drive axle assembly is a key component in the automotive transmission system. It is responsible for transmitting the power generated by the engine to the wheels to propel the vehicle forward. The static torsion test of an automotive drive axle assembly is a crucial test in the field of automotive engineering. It is used to detect the deformation and stress response of the drive axle assembly under different torque levels and evaluate the performance and reliability of the drive axle assembly under torque loading.
[0003] Currently, by using a disconnecting drive axle for static torsion tests, the reducer assembly and the half shafts are separately and independently subjected to static torsion tests. The static torsion safety factors of these two test specimens, namely the reducer assembly and the half shafts, obtained through the static torsion tests are both very high. However, when the reducer assembly and the half shafts are applied to the whole vehicle, there have been multiple cases of fracture failures in the transition area at the connection between the independent main reducer housing and the vehicle frame during road tests, and the road test cost is high. Therefore, it is necessary to conduct a static torsion test on the reducer assembly, the half shafts, and the vehicle frame as a whole to obtain a more accurate static torsion safety factor. How to solve the static torsion test of the reducer assembly, the half shafts, and the vehicle frame as a whole has long been a problem that is difficult to solve. Summary of the Invention
[0004] The purpose of the utility model is to provide a fixing device for static torsion tests of drive axle assemblies in view of the deficiencies of the prior art. The reducer assembly and the half shafts are fixed to the vehicle frame. Through the fixing device of the utility model, the front side beams of the vehicle frame, the rear side beams of the vehicle frame, and the output ends of the half shafts are fixed. Then, the input flange of the reducer assembly is connected to the static torsion equipment, and it is possible to conduct a static torsion test on the reducer assembly, the half shafts, and the vehicle frame as a whole to obtain a more accurate static torsion safety factor.
[0005] The purpose of the utility model is achieved as follows:
[0006] A static torsion test fixing device for a driving axle assembly, comprising left and right fixing seats for fixing the half shafts of the driving axle assembly. A connecting seat for connecting the half shafts is arranged on the fixing seat. Left and right half shaft support seats are arranged between the left and right fixing seats. A space for the reduction gear assembly to give way is left between the two half shaft support seats. Half shaft pressing blocks are arranged above each half shaft support seat. The half shaft pressing blocks are connected to the half shaft support seats through adjusting bolts. Front support seats and rear support seats of the vehicle frame are respectively arranged on the front and rear sides of each half shaft support seat. A connecting plate extending upward is arranged on the front support seat. A first strip-shaped hole is vertically arranged on the connecting plate. A first vehicle frame support block and a first vehicle frame pressing block are respectively connected to the first strip-shaped hole through bolts. The first vehicle frame support block and the first vehicle frame pressing block are connected through an adjusting bolt for pressing the front side beam of the vehicle frame. A second strip-shaped hole is arranged on one side of the rear support seat. A second vehicle frame support block is connected to the second strip-shaped hole through a bolt. A second vehicle frame pressing block is arranged above the second vehicle frame support block. The second vehicle frame pressing block is connected to the second vehicle frame support block through an adjusting bolt for pressing the rear side beam of the vehicle frame.
[0007] The connecting seat is in an I shape. One side of the connecting seat is connected to the fixing seat through a bolt, and the other side is used to connect to a half shaft adapter coupling through a half shaft bolt.
[0008] The upper and lower ends of the half shaft support seat respectively extend outwards in all directions to form extension ends, and third strip-shaped holes are arranged on the extension ends.
[0009] A space for the half shaft to give way is left between the half shaft support seat and the half shaft pressing block.
[0010] The lower part of the half shaft pressing block is set to be arc-shaped.
[0011] The first vehicle frame support block and the second vehicle frame support block are set to be L-shaped. The vertical arm of the first vehicle frame support block is connected to the connecting plate through a bolt passing through the first strip-shaped hole. The vertical arm of the second vehicle frame support block is connected to the rear support seat through a bolt passing through the second strip-shaped hole.
[0012] Two fourth strip-shaped holes are arranged on the cross arm of the first vehicle frame support block, and fifth strip-shaped holes corresponding to the fourth strip-shaped holes are arranged on the first vehicle frame pressing block.
[0013] The cross sections of the front support seat and the rear support seat are in an I shape.
[0014] The distance between the half shaft pressing block and the half shaft support seat is greater than the diameter of the half shaft.
[0015] The beneficial effects of the utility model are as follows: by adopting the fixing device of the utility model, the left and right half-axles respectively pass through the clearance space between the half-axle support seat and the half-axle pressure block, and are fixedly connected with the connecting seat on the fixing seat by the half-axle bolts; the left and right side beams at the front of the frame are respectively pressed and fixed by the first frame support block and the first frame pressure block on the front support seat; the left and right side beams at the rear of the frame are respectively pressed and fixed by the second frame support block and the second frame pressure block on the rear support seat; and then the input end flange of the reducer assembly is connected to the static torsion device, so that the reducer assembly, the half-axle and the frame as a whole can be subjected to a static torsion test; the six points fixed by the fixing device are the force application points to which the actual vehicle is subjected when driving, and an accurate static torsion safety factor can be obtained.
[0016] Moreover, the connection structure of the fixing device mostly adopts a strip hole structure, which is convenient for adjusting the installation position according to the shape and size of the frame and the half-axle, thereby improving the installation and disassembly efficiency.
[0017] The fixture is used to first perform a static torsion test on the reducer assembly, half-axle and frame as a whole, which can prevent the occurrence of the same failure mode during the road test and greatly reduce the road test cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 This is a front view of the front support seat of the utility model;
[0020] Figure 3 This is the first axonometric view of the front support seat of the utility model;
[0021] Figure 4 This is a second axonometric view of the front support seat of the utility model;
[0022] Figure 5 It is a front view of the half-axle support seat and the fixing seat of the utility model;
[0023] Figure 6 It is a side view of the half-axle support seat and the fixing seat of the utility model;
[0024] Figure 7 It is an axonometric view of the half-axle support seat and the fixing seat of the utility model;
[0025] Figure 8 It is a front view of the rear ball support seat of the utility model;
[0026] Figure 9 This is an axonometric view of the rear ball support seat of the utility model;
[0027] Figure 10 It is an axonometric view of the fixed half-axle and the frame of the utility model;
[0028] Figure 11 This is the top view of the fixed half shaft and the vehicle frame of the present utility model.
[0029] Explanation of the reference numerals in the drawings: front support seat 1, connecting plate 1a, first strip-shaped hole 1a-1, first vehicle frame support block 1b, fourth strip-shaped hole 1b-1, first vehicle frame pressing block 1c, fifth strip-shaped hole 1c-1, half shaft support seat 2, half shaft pressing block 2a, extension end 2b, third strip-shaped hole 2b-1, fixed seat 3, connecting seat 3a, rear support seat 4, second strip-shaped hole 4-1, second vehicle frame support block 4a, second vehicle frame pressing block 4b, vehicle frame 5, half shaft 6, reducer assembly 7. Specific embodiments
[0030] The following is a further description in conjunction with the drawings and specific embodiments.
[0031] See Figures 1 to 11 , an embodiment of a static torsion test fixing device for a drive axle assembly, including left and right fixed seats 3 for fixing the half shafts 6 of the drive axle assembly. The fixed seats 3 adjust the positions of the fixed seats 3 according to the size of the half shafts 6 and are fixedly connected to the ground by bolts; a connecting seat 3a for connecting the half shafts 6 is arranged on the fixed seats 3. The connecting seat 3a is in an I shape. One side of the connecting seat 3a is fixedly connected to the fixed seat 3 by bolts, and the other side is fixedly connected to the adapter coupling of the half shaft 6 by the half shaft bolts of the half shaft 6. The connecting seat 3a can be replaced according to the size of the adapter coupling of the half shaft 6. Left and right half shaft support seats 2 are arranged between the left and right fixed seats 3. The half shaft support seats 2 are fixedly connected to the ground by bolts. A space for making way for the reducer assembly 7 is left between the two half shaft support seats 2. The upper and lower ends of the half shaft support seats 2 respectively extend outwards to form extension ends 2b. Third strip-shaped holes 2b-1 are arranged on the extension ends 2b for adjusting the position according to the diameter of the half shaft 6; a half shaft pressing block 2a is connected to the half shaft support seat 2 by adjusting bolts passing through the third strip-shaped holes 2b-1. The lower part of the half shaft pressing block 2a is set to be arc-shaped to prevent interference with the half shaft. A space for making way for the half shaft 6 is left between the half shaft support seat 2 and the half shaft pressing block 2a, and the distance between the half shaft pressing block 2a and the half shaft support seat 2 is greater than the diameter of the half shaft 6.
[0032] The front and rear sides of each half-axle support seat 2 are respectively provided with a front support seat 1 and a rear support seat 4 of the vehicle frame 5. According to the size of the vehicle frame 5, the positions of the front support seat 1 and the rear support seat 4 are adjusted and fixedly connected to the ground by bolts. The cross-sections of the front support seat 1 and the rear support seat 4 are in the shape of an I-beam for lightweight design of the structure. A connecting plate 1a extending upward is provided on the front support seat 1. Two first strip-shaped holes 1a-1 are vertically provided on the connecting plate 1a. A first vehicle frame support block 1b and a first vehicle frame pressing block 1c are respectively connected to the first strip-shaped holes 1a-1 by bolts. The first vehicle frame support block 1b and the first vehicle frame pressing block 1c are arranged in an L shape. The vertical arms of the first vehicle frame support block 1b and the first vehicle frame pressing block 1c are connected to the connecting plate 1a by bolts passing through the first strip-shaped holes 1a-1 for adjusting the position according to the height of the front side beam of the vehicle frame 5. Two fourth strip-shaped holes 1b-1 are provided on the cross arm of the first vehicle frame support block 1b. A fifth strip-shaped hole 1c-1 corresponding to the fourth strip-shaped hole 1b-1 is provided on the first vehicle frame pressing block 1c for adjusting the position according to the shape of the front side beam of the vehicle frame 5 to prevent interference. The first vehicle frame support block 1b and the first vehicle frame pressing block 1c are connected by an adjusting bolt for tightly fixing the front side beam of the vehicle frame 5.
[0033] A second strip-shaped hole 4-1 is provided on one side of the rear support seat 4. A second vehicle frame support block 4a is connected to the second strip-shaped hole 4-1 by a bolt. The second vehicle frame support block 4a is arranged in an L shape. The vertical arm of the second vehicle frame support block 4a is connected to the rear support seat 4 by a bolt passing through the second strip-shaped hole 4-1 for adjusting the position according to the height of the rear side beam of the vehicle frame 5. A second vehicle frame pressing block 4b is provided above the second vehicle frame support block 4a. The second vehicle frame pressing block 4b is connected to the second vehicle frame support block 4a by an adjusting bolt for tightly fixing the rear side beam of the vehicle frame 5.
[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications made by those skilled in the art without departing from the spirit of the present invention fall within the protection scope of the present invention.
Claims
1. A drive axle assembly static torsion test fixture, comprising left and right fixing seats (3) for fixing a half shaft (6) of the drive axle assembly, characterized in that: A connecting seat (3a) for connecting the half-axle (6) is provided on the fixing seat (3), and a left and a right half-axle support seat (2) are provided between the left and right fixing seats (3). A space for the reducer assembly (7) to make way is reserved between the two half-axle support seats (2). A half-axle pressure block (2a) is provided above each half-axle support seat (2), and the half-axle pressure block (2a) is connected to the half-axle support seat (2) via an adjusting bolt. A front support seat (1) and a rear support seat (4) of a vehicle frame (5) are provided on the front and rear sides of each half-axle support seat (2), respectively. A connecting plate (1a) extending upward is provided on the front support seat (1), and a first strip hole (1a) is vertically provided on the connecting plate (1a). -1), the first strip hole (1a-1) is connected to the first frame support block (1b) and the first frame pressure block (1c) respectively by bolts, the first frame support block (1b) and the first frame pressure block (1c) are connected by adjusting bolts, and are used to press the front side beam of the frame (5), a second strip hole (4-1) is provided on one side of the rear support seat (4), the second strip hole (4-1) is connected to the second frame support block (4a) by bolts, a second frame pressure block (4b) is provided above the second frame support block (4a), and the second frame pressure block (4b) is connected to the second frame support block (4a) by adjusting bolts, and is used to press the rear side beam of the frame (5).
2. The static torsion test fixture of the drive axle assembly according to claim 1, characterized in that: The connecting seat (3a) is in an I-shape, one side of the connecting seat (3a) is connected to the fixing seat (3) via bolts, and the other side is used to be connected to the half-shaft transfer coupling via half-shaft bolts.
3. The static torsion test fixture of the drive axle assembly according to claim 1, characterized in that: The upper and lower ends of the half-axle support seat (2) respectively extend to form extension ends (2b) in all directions, and a third strip-shaped hole (2b-1) is provided on the extension ends (2b).
4. The static torsion test fixture of the drive axle assembly according to claim 1, characterized in that: A space for the half-axle (6) to make way is reserved between the half-axle support seat (2) and the half-axle pressure block (2a).
5. The drive axle assembly static torsion test fixture according to claim 1, characterized in that: The lower part of the half-shaft pressing block (2a) is arranged in an arc shape.
6. The static torsion test fixture for a drive axle assembly according to claim 1, characterized in that: The first frame support block (1b) and the second frame support block (4a) are arranged in an L shape, the vertical arm of the first frame support block (1b) is connected to the connecting plate (1a) by means of bolts passing through the first strip-shaped holes (1a-1), and the vertical arm of the second frame support block (4a) is connected to the rear support seat (4) by means of bolts passing through the second strip-shaped holes (4-1).
7. The drive axle assembly static torsion test fixture according to claim 1, characterized in that: Two fourth strip holes (1b-1) are arranged on the cross arm of the first frame support block (1b), and a fifth strip hole (1c-1) corresponding to the fourth strip holes (1b-1) is arranged on the first frame pressing block (1c).
8. The drive axle assembly static torsion test fixture according to claim 1, characterized in that: The cross-sections of the front support seat (1) and the rear support seat (4) are I-shaped.
9. The static torsion test fixture of the drive axle assembly according to claim 1, characterized in that: The distance between the half-shaft pressure block (2a) and the half-shaft support seat (2) is greater than the diameter of the half-shaft (6).