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Car white vehicle body structure static angular rigidity testing system and testing method thereof

A testing system and body-in-white technology, which is applied in the field of automobile manufacturing, can solve the problems of applying for patents for technical solutions or being reported in the literature, and achieves the effects of simple operation, good versatility and improved efficiency.

Active Publication Date: 2008-10-08
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] At present, major automobile companies at home and abroad are spending huge amounts of investment to improve the special test bench for body stiffness in order to improve the quality and efficiency of the test, but there is no mature technical solution to apply for a patent or appear in the literature.

Method used

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  • Car white vehicle body structure static angular rigidity testing system and testing method thereof
  • Car white vehicle body structure static angular rigidity testing system and testing method thereof
  • Car white vehicle body structure static angular rigidity testing system and testing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment solves the problems of loading, data collection and data processing in the test system.

[0064] The test system is provided with a computer control unit, and the servo loading device 42 is connected with the computer control unit through a signal line; the data collection and processing system is provided with sensors and signal lines connected with the computer control unit.

[0065] Before the test, according to different models and specific test requirements, set the test program and store it in the computer control unit. During the test, the computer control unit sends a loading instruction, and the bending stiffness loading device 44 and the torsional stiffness loading device 45 perform different loadings; the loading force is converted into an electrical signal by the force sensor and sent to the computer control unit; at the same time, the value of the deformation amount corresponding to the test body 3 is also converted into an electrical signal...

Embodiment 2

[0068] In this embodiment, the front support assembly 4 can be used not only as the restraining device 41 but also as the torsional rigidity loading device.

[0069] Such as image 3 , Figure 4 , Figure 5 As shown, the front support assembly 4 is arranged on the front end of the test vehicle body 3, on which a front support turntable 15, a front support arm 5, a front support column 13 with joint bearings at both ends and a front support column are arranged. Seat joint bearing 10, front support slide assembly 14, front support lock nut 11, front support connecting rod 12, etc.

[0070] The structure of the front support assembly 4 is as follows: the bottom surface of the front support turntable 15 is fastened to the test bench floor 1, and the front support arm 5 passes through the center of its length from the front The support turntable 15 is supported, and the connection between the front support turntable 15 and the front support arm 5 is provided with a rotating disk...

Embodiment 3

[0074] This embodiment is a structure in which the front support assembly 4 is used as a part of the restraint device 41 .

[0075] Such as image 3 with Figure 4 As shown, the rotation directions of the front support joint bearings 10 on the two ends of the respective front support columns 13 are perpendicular to each other, and the axis of the front support joint bearings 10 at the upper end is parallel to the longitudinal centerline of the vehicle body.

[0076] The purpose of this structure is to make the front support assembly 4 have a certain degree of flexibility during the stress and deformation process of the test vehicle body 3, without affecting the free deformation of the vehicle, that is to say, the stiffness of the front support assembly 4 itself Does not affect the test of the test body 3.

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Abstract

The invention discloses a static stiffness test system for white vehicle bodies of passenger vehicles. A constrained device (41) comprises a front steadier assembly (4) and a rear steadier assembly (2); a flexural stiffness charger (44) and a torsional stiffness charger (45) are arranged on a service charger (42) to load on the vehicle bodies; a data acquisition and processing system is consisted of a bending deflection test device (46) and a reverse angle test device (47) which are used for vehicle bodies. The invention also discloses a test method used by the test system mentioned above. Using the mentioned technical scheme and compared with the prior test technology and the device thereof used for flexural stiffness and torsional stiffness test for white vehicle bodies of passenger vehicles, the invention has the advantages of better versatility, simple operation, time-saving, less labor intensity and more accurate test date, improving the test production efficiency. As a result, the precision and reliability are higher, besides, economic benefit is improved significantly.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing technology and equipment, and relates to testing equipment in the automobile manufacturing technology and detection and testing technology. More specifically, the present invention relates to a static stiffness test system for a body-in-white structure of a passenger car. In addition, the present invention also relates to the test method adopted by the test system. Background technique [0002] The static stiffness of the automobile body is one of the performances that the body-in-white structure of a passenger car must meet, and the determination of the optimal value of the static stiffness of the body requires the establishment of a set of scientific, reliable and feasible theoretical models and test methods. Generally, the static stiffness of the vehicle body currently on the market can be used as an approximate standard for evaluating the necessary static stiffness of the veh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00G01M17/007
Inventor 陈文敏郭喜晨张厚平阳轩铎章礼文吴显逸王菊芳
Owner CHERY AUTOMOBILE CO LTD
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