Simple detection device for strength of automobile torsion bar
By designing a simple testing device that includes a base, guide rail, chuck, and hydraulic telescopic rod, the problem of complex and time-consuming traditional torsion bar strength testing has been solved, achieving fast, accurate, and low-cost testing results, which meets the needs of large-scale production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏凯骏机械有限公司
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional methods for testing the strength of torsion bars are complex, time-consuming, costly, and susceptible to human error, making it difficult to meet the demands of real-time, efficient, and large-scale production.
A simple testing device was designed, comprising a base, guide rail, chuck, rotating shaft, turntable, hydraulic telescopic rod, and pressure sensor. It reduces manual operation by automatically applying torque and recording the torsion bar strength parameters in real time.
It enables rapid, accurate, and low-cost torsion bar strength testing, improving production efficiency and product quality, and meeting the testing needs of fast production lines.
Smart Images

Figure CN224216475U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automotive parts testing, specifically a simple testing device for automotive torsion bar strength. Background Technology
[0002] Automobiles, as modern means of transportation, are widely used in people's daily lives and work. In the power transmission system of an automobile, torsion bars play a crucial role, typically used to support the suspension system and connect the wheels to the body, transmitting wheel loads to the body. Therefore, the strength of the torsion bar directly affects the safety and comfort of the vehicle.
[0003] As a crucial component of automotive suspension systems, torsion bars require high strength and excellent fatigue resistance. Ensuring that torsion bar strength meets design requirements during the design and manufacturing process has become a critical concern for automakers. Traditionally, testing torsion bar strength relies on complex testing equipment and lengthy testing cycles, making quality control during production more cumbersome and costly.
[0004] Currently, most methods for testing torsion bar strength still rely on manual loading experiments. This involves applying torque under specific conditions using instruments, recording the deformation and stress values, and then performing a series of calculations to derive the torsion bar's strength parameters. Traditional methods require extensive manual operation, and the complexity of the testing equipment and the long testing cycle negatively impact production efficiency. High-precision torsion bar strength testing requires expensive specialized equipment, increasing testing costs. Furthermore, the manual operation and recording inherent in traditional methods make them susceptible to human error, resulting in poor accuracy and reliability of the test results. In automotive production, especially during large-scale production, traditional testing methods struggle to meet the demands for real-time, efficient, and large-scale testing.
[0005] Therefore, there is an urgent need for a simple, fast, accurate, and low-cost automotive torsion bar strength testing device. This device can monitor the strength of the torsion bar in real time during the production process and automatically record and analyze the test results, reducing manual operation, improving production efficiency and product quality, thereby enhancing the safety and performance of automobiles. Utility Model Content
[0006] To address the aforementioned shortcomings, this utility model provides the following technical solution:
[0007] A simple testing device for the strength of automotive torsion bars includes a base with two parallel guide rails. A slider is located at one end of each guide rail, and a chuck is mounted on the slider. A fixing block is located at the other end of each guide rail. A rotating shaft parallel to the guide rails connects both sides of the fixing block. A turntable is located at the end of the rotating shaft inside the fixing block. A gear disk is attached to the side of the turntable opposite to the fixing block. A mounting groove is located at the axial center of the other side of the turntable, and a mounting block is located within the mounting groove. A fixing groove is located within the mounting block. A support block is located between the middle sections of the guide rails. An arc-shaped groove is located at the top of the support block, and a lifting groove is located within the arc-shaped groove. A hydraulic telescopic rod is located within the lifting groove, and a semi-circular support block is located at the top of the hydraulic telescopic rod.
[0008] Furthermore, the chuck is a three-jaw chuck or a four-jaw chuck, and a conical block is provided at the axial center of the chuck.
[0009] Furthermore, the mounting groove is provided with an internal thread, and the outer side of the mounting block is provided with an external thread corresponding to the internal thread.
[0010] Furthermore, the shape of the fixing groove corresponds to the shape of the top of the torsion bar.
[0011] Furthermore, the tail end of the rotating shaft is engraved with grooves, and the fixed block at the tail end of the rotating shaft is arranged around the dial corresponding to the grooves.
[0012] Furthermore, the top of the hydraulic telescopic rod is equipped with a corresponding pressure sensor to detect the supporting force provided by the semi-circular support block.
[0013] Furthermore, a receiving groove is provided on the base on one side of the guide rail, a rotary motor is provided on the top of the fixing block, and a moving gear is provided on the top of the rotating shaft of the rotary motor to mesh with the gear disk.
[0014] The beneficial effects of this utility model are: 1. This utility model provides a simple automotive torsion bar strength testing device, which can quickly test the strength of automotive torsion bars, and controls the quality level of automotive torsion bar production with the advantages of high precision, high efficiency, and low cost. 2. This utility model greatly shortens the torsion bar strength testing time by adopting a simple and rapid testing technology. Compared with the traditional manual loading test, this new device can achieve timely and rapid testing, reduce the testing cycle, improve production efficiency, and meet the testing needs of rapid production lines. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0017] In the diagram: 1-base, 2-guide rail, 3-slider, 4-fixed block, 5-chuck, 6-rotating shaft, 7-turntable, 8-gear disk, 9-mounting slot, 10-mounting block, 11-fixed slot, 12-support block, 13-arc groove, 14-lifting slot, 15-hydraulic telescopic rod, 16-semi-circular support block, 17-moving gear. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Combination Figures 1 to 2 Shown:
[0020] A simple testing device for the strength of an automotive torsion bar includes a base 1, on which two parallel guide rails 2 are provided. A slider 3 is provided at one end of the guide rails 2, and a chuck 5 is provided on the slider 3. A fixing block 4 is provided at the other end of the guide rails 2. A rotating shaft 6 parallel to the guide rails 2 is connected to both sides of the fixing block 4. A turntable 7 is provided at the end of the rotating shaft 6 located inside the fixing block 4, and rotates coaxially with the rotating shaft 6. A gear disk 8 is attached to the side of the turntable 7 opposite to the fixing block 4. A mounting groove 9 is provided at the axial center of the other side of the turntable 7. A mounting block 10 is provided in the mounting groove 9. A fixing groove 11 is provided in the mounting block 10. The shape of the fixing groove 11 corresponds to the shape of the top of the torsion bar and is used to fix the top of the torsion bar.
[0021] A support block 12 is provided in the middle of the guide rail 2. The top of the support block 12 is provided with an arc-shaped groove 13. A lifting groove 14 is provided in the arc-shaped groove 13. A hydraulic telescopic rod 15 is provided in the lifting groove 14. A semi-circular support block 16 is provided at the top of the hydraulic telescopic rod 15, which is used to provide corresponding support and can also apply corresponding force to detect the strength parameters of the torsion bar.
[0022] The chuck 5 is a three-jaw chuck or a four-jaw chuck. A tapered block is provided at the center of the chuck 5 shaft to facilitate stable fixing of the automotive torsion bar.
[0023] The mounting groove 9 has an internal thread, and the mounting block 10 has an external thread on the outside that corresponds to the internal thread. The mounting block 10 can be removed and replaced, so that the shape of the fixing groove 11 can be used for different models of torsion bars.
[0024] The end of the rotating shaft 6 is engraved with a groove. The fixed block 4 at the end of the rotating shaft 6 is arranged around the dial and corresponds to the groove. The torsion angle can be clearly obtained by the change in the dial reading by the direction of the groove.
[0025] The top of the hydraulic telescopic rod 15 is equipped with a corresponding pressure sensor to detect the support force provided by the semi-circular support block 16, thereby obtaining relevant parameters of the torsion bar's bending strength.
[0026] The base 1 on one side of the guide rail 2 is provided with a receiving groove for accommodating the torsion bar to be tested. The top of the fixing block 4 is provided with a rotary motor. The top of the rotating shaft of the rotary motor is provided with a moving gear 17 that meshes with the gear disk 8. The rotary motor drives the moving gear 17 to rotate, providing rotational power to the gear disk 8, thereby causing the turntable 7 to rotate, thus providing torque to the torsion bar in the middle fixing groove 11 of the turntable 7.
[0027] Working principle: The torsion bar to be tested is removed from the receiving slot, one end is inserted into the fixed slot, and the other end is clamped by a chuck. The rotating motor drives the gear to rotate, providing rotational power to the gear disk, thus making the turntable rotate. At the same time, it provides torque to the torsion bar in the middle fixed slot. At this time, the rotating shaft rotates. By combining the change of the scale markings and the torque provided by the motor with the corresponding parameters, the torque-related data can be calculated quickly and accurately. Then, it is reset, and the hydraulic telescopic rod rises to press against the middle of the torsion bar. The corresponding torsion bar strength parameters are obtained by the extension and retraction of the hydraulic telescopic rod and the force change obtained by the pressure sensor.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A simple device for testing the strength of automotive torsion bars, characterized in that: Includes a base (1), on which two parallel guide rails (2) are provided. A slider (3) is provided at one end of the guide rails (2), and a chuck (5) is provided on the slider (3). A fixing block (4) is provided at the other end of the guide rails (2). A rotating shaft (6) parallel to the guide rails (2) is connected to both sides of the fixing block (4). A turntable (7) is provided at the end of the rotating shaft (6) located inside the fixing block (4). A gear is attached to the side of the turntable (7) opposite to the fixing block (4). The turntable (8) has an installation groove (9) at the center of the other side of the turntable (7). The installation groove (9) has an installation block (10) and a fixing groove (11). The guide rail (2) has a support block (12) in the middle. The support block (12) has an arc groove (13) at the top. The arc groove (13) has a lifting groove (14) and a hydraulic telescopic rod (15) in the lifting groove (14). The top of the hydraulic telescopic rod (15) has a semi-circular support block (16).
2. The simple testing device for automotive torsion bar strength according to claim 1, characterized in that: The chuck (5) is a three-jaw chuck or a four-jaw chuck, and a conical block is provided at the axial center of the chuck (5).
3. The simple testing device for automotive torsion bar strength according to claim 1, characterized in that: The mounting groove (9) is provided with an internal thread, and the mounting block (10) is provided with an external thread corresponding to the internal thread on its outer side.
4. The simple testing device for automotive torsion bar strength according to claim 1, characterized in that: The shape of the fixing groove (11) corresponds to the shape of the top of the torsion bar.
5. The simple testing device for automotive torsion bar strength according to claim 1, characterized in that: The end of the rotating shaft (6) is engraved with a groove, and the fixing block (4) at the end of the rotating shaft (6) is arranged around the dial corresponding to the groove.
6. The simple testing device for automotive torsion bar strength according to claim 1, characterized in that: The top of the hydraulic telescopic rod (15) is equipped with a corresponding pressure sensor to detect the support force provided by the semi-circular support block (16).
7. The simple testing device for automotive torsion bar strength according to claim 1, characterized in that: The base (1) on one side of the guide rail (2) is provided with a receiving groove, the top of the fixing block is provided with a rotary motor, and the top of the rotating shaft of the rotary motor is provided with a moving gear (17) that meshes with the gear disk (8).