Electric/hand-operated one body loaded car white vehicle body torsion static angular rigidity testing system

Abstract

The invention relates to a static torsional rigidity test system of a car body-in-white with electric / manual integrated loading, which is characterized in that it includes a mechanical restraint device, an electronically controlled loading device, a sensor measuring device and an industrial computer; the mechanical restraint device includes a front restraint device and a rear restraint device; the electric control loading device includes a motor control card arranged on the industrial computer; the output end of the motor control card is electrically connected to the motor driver, and the output end of the motor driver is electrically connected to the motor in the mechanical lifting device, and the mechanical lifting device is set Below the front restraint device, a force sensor is arranged on it, and the output end of the force sensor is electrically connected to the data acquisition card arranged on the industrial computer; the sensing and measuring device includes a mounting bracket arranged under the front restraint device, and the mounting bracket is provided with a photoelectric The switch and the displacement sensor; the output end of the photoelectric switch is electrically connected to the motor driver; the output end of the displacement sensor is electrically connected to the data acquisition card; the industrial computer is preset with a test module for controlling the motor control card and the data acquisition card.

Description

technical field [0001] The invention relates to a whole vehicle test system, in particular to a test system for torsional static stiffness of a car body-in-white with integrated electric / manual loading. Background technique [0002] The static stiffness of the automobile body-in-white structure is one of the important parameters to measure the mechanical performance of the vehicle. If the body stiffness design is unreasonable, it will affect the dynamic response and NVH (Noise, Vibration, Harshness) performance of the car during driving, which will affect the handling, stability and safety of the car. make an impact. Therefore, during the research and development period of automobiles, it is necessary to test the static stiffness of the body-in-white structure. Structural static stiffness includes torsional static stiffness and bending static stiffness. [0003] In the past 10 years, some domestic universities and enterprises have carried out the research and development ...

AI Technical Summary

Problems solved by technology

Fan Zijie and Chen Zongyu of Tsinghua University developed a set of test platform for torsional static stiffness of body-in-white structure (public number CN1405542A, public date March 26, 2003). The device has low cost, strong versatility, easy operation, and can meet the test accuracy and reliability requirements, but manual loading is used, and the test labor intensity is high; Huang Yan and Xia Chenggang of Shanghai BYD Company designed and developed the torsional stiffness test device of the automobile chassis (public number CN1769858A, public date May 10, 2006), the During the test, the device retains the suspension part, but the versatility is not high. The loading is carried out by the jack, and the test labor intensity is high; Chen Wenmin, Guo Xichen and Zhang Houping of Chery Automobile Company disclosed a static stiffness Test system and test method thereof (publication number CN101281085A, public date October 8, 2008), the system introduces a servo mechanism for loading, and the labor intensity of the test is reduced, but the mechanical device is complex and there are over-constraints

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