Single-shaft endurance fatigue test tool for H-shaped control arm

Abstract

The utility model discloses an H-shaped control arm single-shaft endurance fatigue test tool which comprises an installation support, the installation support is vertically arranged on the upper side of a workbench, and one side of the installation support is provided with a front lining fixing base and a rear lining fixing base which are used for fixing a control arm. The tool plate is arranged on the upper side of the workbench and located on one side of the mounting support, a stabilizer bar connecting rod fixing base is arranged on the upper side of the tool plate, a screw base is arranged on one side of the stabilizer bar connecting rod fixing base, a screw is arranged at the top end of the screw base, a spring is connected to the outer side wall of the screw in a sleeving mode, and the stabilizer bar connecting rod fixing base is arranged on the other side of the stabilizer bar connecting rod fixing base. A disc is arranged at the top of the spring, and a connecting disc is arranged at the bottom of the spring; and the Y-axis loading unit is arranged on one side of the tool plate. According to the utility model, the problems of complex structure and high cost caused by the fact that a loading cylinder is adopted to load a fixing force at the spring plate of the existing test tool can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts test tooling, and particularly to a single-axis durability fatigue test tooling for an H-type control arm. Background Art

[0002] With the entry of new energy vehicles into the market, the H-type control arm multi-link suspension has gradually come into the public view. Due to the characteristics of the H-arm multi-link suspension, such as compact structure, good braking performance, and high strength and corrosion resistance, more and more new energy vehicle models are equipped with H-type control arms at present. As an important component in the automotive suspension system, the durability and reliability of the H-type control arm are crucial for the safety performance of the vehicle. To ensure the performance of the H-type control arm in actual use, a single-axis durability fatigue test is required. However, the existing test tooling has certain limitations. Especially when simulating the force at the spring plate, an additional MTS loading cylinder is often needed, which not only increases the cost but also may not be able to fully and accurately simulate the force during actual vehicle installation. Content of the Utility Model

[0003] The utility model provides a single-axis durability fatigue test tooling for an H-type control arm, which can solve the problems of complex structure and high cost caused by using a loading cylinder to apply a fixed force at the spring plate in the existing test tooling.

[0004] To achieve the above object, the utility model provides the following technical solution: A single-axis durability fatigue test tooling for an H-type control arm, including an installation bracket which is vertically arranged on the upper side of a workbench. On one side of the installation bracket, there are a front bushing fixing base and a rear bushing fixing base for fixing the H-type control arm. A tooling plate is arranged on the upper side of the workbench on one side of the installation bracket. On the upper side of the tooling plate, there is a stabilizer bar link fixing base. On one side of the stabilizer bar link fixing base, there is a screw base. At the top of the screw base, there is a screw. A spring is sleeved on the outer side wall of the screw. At the top of the spring, there is a disc, and at the bottom of the spring, there is a connecting disc. Both the disc and the connecting disc are sleeved on the outer side wall of the screw. A Y-axis loading unit is arranged on one side of the tooling plate, which simplifies the operation steps and more accurately simulates the force on the control arm in the actual working state, thus obtaining more reliable test results.

[0005] Preferably, the Y-axis loading unit includes a bearing connected to the control arm. The end of the bearing is connected with a sensor, and the end of the sensor is provided with a driving device, which can accurately simulate the force received during actual vehicle installation.

[0006] Preferably, inner tubes are arranged on both sides of the bearing for convenient connection.

[0007] Preferably, a fixing sleeve extending into the hole of the H-shaped control arm is arranged on one side of the connecting plate, which is convenient for fixing.

[0008] Preferably, the screw base includes a connecting plate connected to the tooling plate. A connecting column is inclinedly arranged on the upper side of the connecting plate, and a threaded hole matching the screw is arranged in the middle of the connecting column, which is convenient for processing and connection.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] The structure is simple. The screw base, screw, spring, disc, and connecting plate are used to replace the loading cylinder, reducing the use of test resources and accurately simulating the actual loading force during vehicle installation. It can solve the problems of complex structure and high cost caused by using a loading cylinder to apply a fixed force at the spring disc in the existing test tooling. Description of the Drawings

[0011] Figure 1 is a three-dimensional structural diagram of the present utility model in the working state;

[0012] Figure 2 is a three-dimensional structural diagram of the present utility model;

[0013] Figure 3 is an installation structure schematic diagram of the screw base of the present utility model;

[0014] Figure 4 is a three-dimensional structural diagram of the screw base of the present utility model;

[0015] Figure 5 is an installation structure schematic diagram of the bearing and the inner tube of the present utility model.

[0016] Reference Signs:

[0017] 1. Installation bracket, 2. H-shaped control arm, 3. Front bushing fixing base, 4. Rear bushing fixing base, 5. Tooling plate, 6. Stabilizer bar link fixing base, 7. Screw base, 71. Connecting plate, 72. Connecting column, 73. Threaded hole, 8. Screw, 9. Spring, 10. Disc, 11. Y-axis loading unit, 12. Bearing, 13. Sensor, 14. Driving device, 15. Inner tube, 16. Connecting plate, 161. Fixing sleeve. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.

[0019] As Figures 1-5As shown in the figure, to solve the problem that the existing test tooling uses a loading cylinder to apply a fixed force at the spring disc, resulting in a complex structure and high cost, the present utility model provides the following technical solution: An H-shaped control arm single-axis durability fatigue test tooling, including an installation bracket 1, which is vertically fixed on the workbench and used to support and fix the entire test device. A front bushing fixing base 3 and a rear bushing fixing base 4 are provided on its side for fixing the H-shaped control arm 2 to be tested; a tooling plate 5 is arranged on the upper side of the workbench and on one side of the installation bracket 1. A stabilizer bar link fixing base 6 is arranged on the upper side of the tooling plate 5 for fixing the stabilizer bar link to maintain stability during the test. A screw base 7 is arranged on one side of the stabilizer bar link fixing base 6. A screw 8 is arranged at the top of the screw base 7. A spring 9 is sleeved on the outer wall of the screw 8. A disc 10 is arranged at the top of the spring 9, and a connecting disc 16 is arranged at the bottom of the spring 9. Both the disc 10 and the connecting disc 16 are sleeved on the outer wall of the screw 8. A nut is arranged on the screw 8 on one side of the disc 10. By adjusting the nut, the force applied at the spring disc can be changed, without the need to increase the use of the MTS loading cylinder and can accurately simulate the force received by the spring disc during actual vehicle loading; the Y-axis loading unit 11 is a key component for applying the test force. It is arranged on one side of the tooling plate 5, simplifying the operation steps and more accurately simulating the force condition of the control arm under the actual working state, so as to obtain more reliable test results.

[0020] In this embodiment, as Figure 2 shown, the Y-axis loading unit 11 includes a bearing 12 connected to the control arm. A sensor 13 is connected to the end of the bearing 12, and a driving device 14 is arranged at the end of the sensor 13. The sensor 13 is used to measure and monitor the applied force and can accurately simulate the force received during actual vehicle loading.

[0021] In this embodiment, as Figure 5 shown, inner tubes 15 are arranged on both sides of the bearing 12. The inner tubes 15 are used to connect the bearing 12 and the H-shaped control arm 2, which is convenient for connection.

[0022] In this embodiment, as Figure 3 shown, a fixing sleeve 161 extending into the hole of the control arm 2 is arranged on one side of the connecting disc 16, which is convenient for fixing.

[0023] In this embodiment, as Figure 4 shown, the screw base 7 includes a connecting plate 71 connected to the tooling plate 5. A connecting column 72 is inclinedly arranged on the upper side of the connecting plate 71. A threaded hole 73 matching the screw 8 is arranged in the middle of the connecting column 72, which is convenient for processing and connection.

[0024] In this embodiment, as Figure 1As shown, the control arm 2 to be tested is fixed on the front bushing fixing base 3, the rear bushing fixing base 4, and the stabilizer bar link fixing base 6. Adjust the position of the fixing sleeve 161 so that it is firmly fixed in the hole of the control arm 2. Then continue to install the inner tube 15 in the bearing 12, and connect the inner tube 15 to the control arm 2. By adjusting the nut on the screw rod 8, change the tension of the spring 9 to simulate the force condition of the control arm under the actual working state. Start the driving device 14 to apply a periodic force to the control arm 2 through the bearing 12. The sensor 13 monitors and records the applied force in real time to ensure that the test force is within the predetermined range. Conduct a certain number of loading cycles until the predetermined test period is reached or the control arm 2 shows fatigue failure. Record the test data and analyze it through data processing software to evaluate the durability and reliability of the control arm 2.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indications will change accordingly.

[0026] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0027] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A uniaxial endurance fatigue test tool for an H-type control arm, characterized in that: include: A mounting bracket (1), wherein the mounting bracket (1) is vertically arranged on the upper side of the workbench, and a front bushing fixing base (3) and a rear bushing fixing base (4) for fixing an H-shaped control arm (2) are arranged on one side of the mounting bracket (1); A tooling plate (5) is arranged on the upper side of the workbench and on one side of the mounting bracket (1); a stabilizing rod connecting rod fixing base (6) is arranged on the upper side of the tooling plate (5); a screw base (7) is arranged on one side of the stabilizing rod connecting rod fixing base (6); a screw (8) is arranged at the top of the screw base (7); a spring (9) is sleeved on the outer side wall of the screw (8); a disc (10) is arranged on the top of the spring (9); a connecting disc (16) is arranged on the bottom of the spring (9); the disc (10) and the connecting disc (16) are both sleeved on the outer side wall of the screw (8); A Y-axis loading unit (11) is arranged on one side of the tooling plate (5).

2. The H-type control arm uniaxial endurance fatigue test fixture according to claim 1 is characterized in that: The Y-axis loading unit (11) comprises a bearing (12) connected to the control arm, the end of the bearing (12) is connected to a sensor (13), and the end of the sensor (13) is provided with a driving device (14).

3. The H-type control arm uniaxial endurance fatigue test fixture according to claim 2 is characterized in that: Inner tubes (15) are provided on both sides of the bearing (12).

4. The H-type control arm uniaxial endurance fatigue test fixture according to claim 1, characterized in that: A fixing sleeve (161) extending into the hole of the H-shaped control arm (2) is provided on one side of the connecting plate (16).

5. The H-type control arm uniaxial endurance fatigue test fixture according to claim 1, characterized in that: The screw base (7) comprises a connecting plate (71) connected to the tooling plate (5), a connecting column (72) is obliquely arranged on the upper side of the connecting plate (71), and a threaded hole (73) matching the screw (8) is arranged in the middle of the connecting column (72).

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