Hydraulic servo shock absorber test bench

Abstract

The invention provides a hydraulic servo shock absorber test bench, which is mainly composed of a base assembly, a rotating frame assembly, an upper mounting seat assembly and a lower mounting seat assembly. The rotating frame assembly is arranged on one side of the base assembly. The upper end of the rotating frame assembly is connected with the upper mount assembly, and the lower end is connected with the lower mount assembly. The hydraulic servo shock absorber test bench can not only realize the vertical test or horizontal test of the shock absorber, but also simulate the actual loading state of the shock absorber, and control the rotating frame assembly to realize the performance test of the shock absorber at any angle. And through limit switch Ⅰ and limit switch Ⅱ, respectively determine the horizontal test position and vertical test position of the rotating frame assembly during the rotation process, and determine the upper and lower limit positions of the movable base on the rotating frame assembly to ensure that the shock absorber Precision and reliability of bench testing.

Description

technical field [0001] The invention relates to a shock absorber test device for railway EMUs, locomotive vehicles and subway urban rail vehicles, in particular to a hydraulic servo shock absorber test bench. Background technique [0002] As a key component of railway vehicle bogies, oil pressure shock absorbers can absorb and buffer various shocks and vibrations to improve the stability and comfort of vehicle operation, especially as the speed of Harmony series locomotives and CRH series EMUs increases. The improvement not only significantly increases the demand for the types and quantities of hydraulic shock absorbers, but also significantly increases the requirements for the performance and parameters of hydraulic shock absorbers. [0003] Vehicle shock absorbers need to be strictly tested before being installed on the vehicle. The principle of the shock absorber performance test is: apply an excitation signal at a certain speed to the shock absorber test bench, and drive...

AI Technical Summary

Problems solved by technology

[0005] Although the shock absorber test bench of the above two mechanical amplitude modulation methods can meet the vertical and transverse test requirements of the shock absorber, it can only realize the vertical test or horizontal test in a single direction, and cannot realize the performance test of the shock absorber at any angle ; and the test amplitude is achieved by adjusting the eccentricity of the crank. When completing multiple tests under multiple amplitude modulations, the amplitude modulation process is cumbersome, and the accuracy and reliability of mechanical amplitude modulation cannot meet the test requirements; due to different vehicle shock absorber specifications and models The difference is large. The fixtures of the traditional shock absorber test bench cannot meet any type of shock absorber, and the installation versatility and convenience are poor. hard to improve

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