Testing system for fatigue durability of vehicle body buffer block

Abstract

The utility model provides a vehicle body buffer block fatigue durability test system, which comprises a workbench, a carrier part, a manipulator and an opponent piece, and is characterized in that the carrier part is fixed on the workbench, and a buffer block is arranged on the carrier part; a pressure head is arranged at the end part of the manipulator; when the opponent piece and the carrier part are arranged on the vehicle body, the opponent piece makes contact with the buffer block on the carrier part, the opponent piece is arranged on the pressing head, the opponent piece and the carrier part are correspondingly arranged, and the opponent piece is used for hitting or rubbing the buffer block. According to the test system for the fatigue durability of the vehicle body buffer block, only the buffer block and the environment part are used for building a small test bench, the manipulator drives the opponent part to move, impact and friction on the buffer block in different directions are simulated, the working condition of the whole vehicle is fully simulated and restored, and the use and loss conditions of the buffer block in the whole life cycle are quickly verified; the test cost and the time cost are low, multi-round test requirements can be met, and effective verification can be quickly carried out when a buffer block or peripheral parts are changed and optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a test system for fatigue durability performance of a vehicle body buffer block. BACKGROUND

[0002] The buffer block is an important part of the vehicle body system. During the driving and use of the automobile, in order to reduce the impact force, avoid the knocking between parts, reduce the shaking and noise, the buffer block is generally arranged at positions such as the front engine hood, the rear trunk lid, the door and the like. The vehicle body buffer block is usually connected to the vehicle body through threads or bolts, and the material is usually a high polymer material such as EPDM or PP, which is easy to produce problems such as rotation, loosening, wear and deformation in long-term friction and vibration, thereby affecting the system function, and it is necessary to complete the fatigue durability performance verification before mass production.

[0003] At present, the vehicle body buffer block is generally subjected to road durability and bench durability test together with the whole vehicle, but due to the high cost and time cost of the whole vehicle test, it is difficult to meet the multiple test requirements, and when the buffer block or the surrounding parts are changed and optimized, it is difficult to quickly and effectively verify. CONTENT OF THE INVENTION

[0004] To at least partially solve the above problems, the embodiments of the present application provide a test system for fatigue durability performance of a vehicle body buffer block, comprising: a workbench, a carrier part, a mechanical hand and a counter part, the carrier part is fixed on the workbench, and the carrier part is provided with a buffer block; the end of the mechanical hand is provided with a pressure head; the counter part is in contact with the buffer block on the carrier part when the counter part and the carrier part are arranged on the vehicle body, the counter part is arranged on the pressure head, the counter part and the carrier part are correspondingly arranged, and the counter part is used for hitting or rubbing the buffer block.

[0005] In some embodiments, the pressure head is rotatably arranged at the end of the mechanical hand, so that the angle of the pressure head relative to the mechanical hand is adjustable.

[0006] In some embodiments, the test system further comprises a temperature box, and the workbench, the carrier part, the mechanical hand and the counter part are arranged in the temperature box, and the temperature box can adjust the temperature inside the temperature box.

[0007] In some embodiments, the test system further comprises a humidity regulator, the humidity regulator is arranged in the temperature box, and the humidity regulator is used for adjusting the humidity in the temperature box.

[0008] In some embodiments, the carrier part is a locally cut part.

[0009] In some embodiments, the carrier part is fixed on the workbench through bolts.

[0010] In some embodiments, the counter part is a locally cut part.

[0011] In some embodiments, the counterpiece is bolted to the indenter.

[0012] The test system for the fatigue durability performance of the vehicle body buffer block provided by the embodiments of the present application builds a small test bench only with the buffer block and the environmental piece, drives the counterpiece to move through the manipulator, simulates the impact and friction on the buffer block in different directions, fully simulates the working condition of the whole vehicle, quickly verifies the use and wear of the buffer block in the whole life cycle, has low test cost and time cost, can meet the needs of multiple tests, and can quickly and effectively verify the buffer block or the surrounding piece after being changed and optimized. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 FIG. 1 is a schematic diagram of the test system for the fatigue durability performance of the vehicle body buffer block provided by the embodiments of the present application.

[0015] The reference signs are as follows:

[0016] 1, buffer block; 2, carrier part; 3, counterpiece; 4, indenter; 5, workbench; 6, bolt; 7, manipulator.

[0017] It should be understood that the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0018] The technical solutions of the preferred embodiments of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0019] As Figure 1As shown, the embodiment of the present application provides a test system for fatigue durability performance of a body cushion block, which comprises a workbench 5, a carrier part 2, a manipulator 7 and a counter part 3. The carrier part 2 is fixed on the workbench 5, and the carrier part 2 is provided with the cushion block 1. The end of the manipulator 7 is provided with a pressure head 4. When the counter part 3 and the carrier part 2 are arranged on the vehicle body, the counter part 3 is in contact with the cushion block 1 on the carrier part 2. The counter part 3 is arranged on the pressure head 4, and the counter part 3 is arranged correspondingly with the carrier part 2. The counter part 3 is used to hit or rub the cushion block 1.

[0020] The test system for fatigue durability performance of a body cushion block provided by the embodiment of the present application only needs to build a small test bench with the cushion block 1 and the environment part. The counter part 3 is moved by the manipulator 7 to simulate the impact and friction of the cushion block 1 in different directions, fully simulate the working condition of the whole vehicle, quickly verify the use and wear of the cushion block 1 in the whole life cycle, and reduce the test cost and time cost. The test system can meet the demand of multiple tests, and can quickly and effectively verify the cushion block 1 or the surrounding part when it is changed and optimized.

[0021] In some embodiments, the pressure head 4 is rotatably arranged at the end of the manipulator 7, so that the angle of the pressure head 4 relative to the manipulator 7 is adjustable. In the embodiment, the pressure head 4 can be adjusted in angle, which is convenient for controlling the counter part 3 to hit or rub the cushion block 1 at different angles.

[0022] In some embodiments, the test system further comprises a temperature box, and the workbench 5, the carrier part 2, the manipulator 7 and the counter part 3 are arranged in the temperature box. The temperature box can adjust the temperature inside the temperature box. In the embodiment, the test system can perform fatigue durability test at different temperatures.

[0023] In some embodiments, the test system further comprises a humidity regulator, and the humidity regulator is arranged in the temperature box. The humidity regulator is used to adjust the humidity in the temperature box. In the embodiment, the test system can perform fatigue durability test at different humidities.

[0024] In some embodiments, the carrier part 2 is a locally cut part. In the embodiment, the volume of the carrier part 2 is reduced, which is convenient for installation and fixation of the carrier part 2, and controls the volume of the whole test system, so that the test system occupies less space. In some embodiments, the carrier part 2 can be fixed on the workbench 5 by bolts 6, so as to facilitate installation and disassembly.

[0025] In some embodiments, the counterpiece 3 is a partial cutting piece. In this embodiment, this arrangement can reduce the volume of the counterpiece 3, facilitate the installation and fixation of the counterpiece 3, and control the volume of the entire test system, so that the test system occupies less space. In some embodiments, the counterpiece 3 is fixed on the pressure head 4 by bolts 6, thereby facilitating installation and disassembly.

[0026] When using the test system for testing the fatigue durability performance of the vehicle body buffer block provided by the embodiments of the present application, the following steps can be performed:

[0027] 1. According to the actual vehicle conditions, the test system is built.

[0028] 2. Adjust the contact surface angle of the counterpiece by the pressure head until it is perpendicular to the buffer block; set the mechanical hand to hit the buffer block at the closing speed measured by the actual vehicle, and perform 500 times (which can be increased or decreased as needed).

[0029] 3. Adjust the contact surface angle of the counterpiece by the pressure head to about 10-15° angle with the buffer block; set the mechanical hand to hit the buffer block at the closing speed measured by the actual vehicle, and perform 500 times (which can be increased or decreased as needed).

[0030] 4. Adjust the pressure head in the opposite direction to about -10 to -15° angle with the buffer block; set the mechanical hand to hit the buffer block at the closing speed measured by the actual vehicle, and perform 500 times (which can be increased or decreased as needed).

[0031] 5. Adjust the pressure head to make the contact surface of the counterpiece perpendicular to the buffer block (the contact force is set according to the actual vehicle measurement value), and the mechanical hand repeatedly performs lateral motion with an amplitude of about 3mm for 5000 times (which can be increased or decreased as needed), simulating the shaking and friction working condition under the closing state.

[0032] 6. After the test, check the test piece: (1) whether the buffer block and the carrier part rotate, and whether the connecting screw (if any) attenuates; (2) whether the counterpiece has obvious deformation or damage; (3) whether the buffer block is severely worn or deformed.

[0033] The test system for testing the fatigue durability performance of the vehicle body buffer block provided by the embodiments of the present application only uses the buffer block, the carrier part (whole or partial cutting piece), and the counterpiece (whole or partial cutting piece), occupies less space, has low test cost, and is easy to operate, and can support multiple test verifications. Through the mechanical hand and the rotatable pressure head, various working conditions can be reproduced, which is more objective and sufficient than simple opening and closing or simple vibration tests.

[0034] Based on the above embodiments of the present application, the technical features of one embodiment can be beneficially combined with one or more other embodiments without explicit negation or conflict.

[0035] Although some particular embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A test system for the fatigue durability performance of a vehicle body buffer block, characterized in that, include: Workbench; A carrier component, which is fixed on the worktable and has a buffer block on it; A robotic arm, wherein a pressure head is provided at the end of the robotic arm; When the opponent component and the carrier component are mounted on the vehicle body, the opponent component contacts the buffer block on the carrier component. The opponent component is mounted on the pressure head and is correspondingly mounted to the carrier component. The opponent component is used to strike or rub the buffer block.

2. The testing system according to claim 1, characterized in that, The pressure head is rotatably disposed at the end of the robotic arm so that the angle of the pressure head relative to the robotic arm is adjustable.

3. The testing system according to claim 1, characterized in that, Also includes: A temperature chamber is provided, in which the workbench, the carrier component, the robotic arm, and the hand component are disposed, and the temperature chamber is capable of regulating its internal temperature.

4. The testing system according to claim 3, characterized in that, Also includes: A humidity regulator is installed in the temperature chamber and is used to regulate the humidity in the temperature chamber.

5. The testing system according to claim 1, characterized in that, The carrier component is a partially cut part.

6. The testing system according to claim 1, characterized in that, The carrier component is fixed to the workbench by bolts.

7. The testing system according to claim 1, characterized in that, The opposing component is a partially cut component.

8. The testing system according to claim 1, characterized in that, The counterslip is fixed to the pressure head by bolts.

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