Suspension Test Bench with Variable Stiffness Virtual Body Fixture

Abstract

The invention relates to a rigidity-variable virtual vehicle body clamp suspension test bed. A sliding guiding column and a shock excitation platform are installed at the two ends of a T-shaped groove bottom plate, a suspension and a wheel assembly are arranged on the shock excitation platform and connected with a virtual vehicle body assembly, and the virtual vehicle body assembly is installed on the sliding guiding column through a sliding bearing block. The lower end of a rigidity-variable virtual vehicle body is fixedly connected with the suspension and the wheel assembly, the side face of the rigidity-variable virtual vehicle body is connected with a U-shaped groove angle adjusting frame in an angle-adjustable mode, and a spring is connected between the U-shaped groove angle adjusting frame and a spring pressing plate. The vibration of a road surface is simulated through the output of the vibration excitation platform, the suspension deforms, the virtual vehicle body deforms, and meanwhile the virtual vehicle body floats up and down along the sliding guiding column. The rigidity-variable virtual vehicle body clamp suspension test bed can meet the requirement for the simulated condition tests of a MacPhersan type suspension system and other independent suspensions, and can meet the requirements for the actual work condition test and the pseudo-dynamic work condition test by being used in cooperation with different loading systems. The rigidity-variable virtual vehicle body clamp suspension test bed is suitable for the earlier stage of the development test of the suspension system. The matched test of the suspension and the vehicle body and the matched test of a shock absorber and the spring can be achieved after the rigidity of the vehicle body is determined.

Description

technical field [0001] The invention relates to a quarter suspension test bench of an automobile, in particular to a suspension test bench considering the rigidity of the vehicle body and the movement of the sprung mass. Background technique [0002] In order to increase the speed of product development and realize the simultaneous development of parts factories and OEMs, it is necessary to effectively improve the test level of parts. Most of the existing suspension test benches focus on the internal test of the suspension system. In terms of design, the influence of the body movement and body stiffness on the suspension performance during the actual vehicle test is ignored, and the connection points of the suspension are rigidly fixed to the bottom plate of the test bench. This is not consistent with the real situation in the process of using the suspension, thus causing the error of the suspension test. In order to solve this contradiction, it is necessary to design a sus...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to aim at the defects of the existing suspension test bench, and provide a suspension test bench with variable stiffness virtual body fixtures capable of simulating the stiffness of the vehicle body and the motion of the sprung mass. It can be floated to make the suspension bench test more reasonable to simulate the actual vehicle road test

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