Composite loading test device of torsion and cutting of air spring

Abstract

The invention relates to a composite loading test device of torsion and cutting of an air spring. The composite loading test device comprises a simulated bogie device and a simulated train body device. The simulated bogie device includes a crank connecting rod oscillating workbench. The simulated train body device consists of a vertical oil cylinder assembly and a horizontal oil cylinder assembly; the horizontal oil cylinder assembly is arranged along the front-back direction of the crank connecting rod oscillating workbench; an air spring is clamped between the vertical oil cylinder assembly and the crank connecting rod oscillating workbench; and the horizontal oil cylinder assembly and the crank connecting rod oscillating workbench are hinged. The vertical oil cylinder assembly applies a vertical load on the air spring. The horizontal oil cylinder assembly and the crank connecting rod oscillating workbench form a crank connecting rod mechanism. When the horizontal oil cylinder assembly stretches out and draws back, the air spring makes arc torsional pendulum motions along a front-back direction with oscillating of the crank connecting rod oscillating workbench; and a horizontal cutting load and a horizontal torsion load are applied on the air spring. Besides, a vertical sensing assembly is installed on the vertical oil cylinder assembly and a horizontal sensing assembly is installed at the horizontal oil cylinder assembly.

Description

technical field [0001] The invention relates to an air spring test device, in particular to an air spring torsion and shear composite loading test device, which simulates the load state of the air spring in actual operation, and conducts a stiffness test and a fatigue test on the air spring. Background technique [0002] With the rapid development of my country's high-speed rail technology, the fastest operation of high-speed EMUs has reached 380km / h. Such a high speed undoubtedly puts forward higher requirements for vehicle vibration-reducing suspension devices. At present, the secondary suspension of high-speed EMUs generally adopts air Spring system, this kind of pneumatic suspension device not only has excellent vertical performance such as constant height, constant natural frequency and low natural vibration frequency, but also can cancel the shaker structure of the bogie to improve the lateral dynamic characteristics of the vehicle. [0003] In my country, 30% of the ...

AI Technical Summary

Problems solved by technology

[0006] 1. Only mechanical displacement can be output, and there is no feedback of displacement and load. When the output displacement value will deviate from the set target value, it will affect the reliability of the test

The load and displacement data output by the test device to the air spring cannot be collected, and the stiffness change of the air spring during the test process cannot be analyzed, that is, only the fatigue test can be performed on the air spring, and the stiffness test cannot be performed

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