A test method for EMU converter

Abstract

The invention discloses a test method of a motor train unit converter. The method comprises the following steps of according to vibration data of a converter installed on a motor train unit, acquiring a vibration-environment long life test spectrum; installing the converter on a vibration test clamp, wherein the vibration test clamp is fixed to a triaxial six-degree-of-freedom vibration bench; applying vibration-environment long life test spectrums of an X axis direction, a Y axis direction and a Z axis direction on a plurality of excitation points of the converter and carrying out simulation vibration tests; and carrying out the simulation vibration tests of preset time and then ending the simulation vibration tests. By using the test method, a test environment can be truly simulated and accurate test data is acquired, and the method plays an important role in structure intensity of the converter and endurance quality detection.

Description

technical field [0001] The invention relates to the technical field of rail transit vehicle equipment, in particular to a test method for a converter of an EMU. Background technique [0002] With the rapid development of my country's rail transit industry, the market has put forward higher requirements for the stability of EMU converters. [0003] As we all know, there are two main vibration test methods for railway products: random vibration and sinusoidal vibration. In the early days, due to the constraints of random vibration test equipment, railway products generally completed appraisal and assessment by means of sine frequency sweep or fixed frequency. In 1994, the Japanese railway department promulgated two standards, JIS E4031-1994 and JISE4032-1994, which stipulated the vibration and shock test methods of domestic railway rolling stock components. A vibration test method. In 2000, my country equivalently adopted JIS standards to formulate TB / T 2542-2000 and TB / T 2...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the standard acceleration spectrum specified in the test is often used to carry out the longevity simulation test. However, this method does not combine the actual operating vibration environment of the converter. The vibration test results are inaccurate, and it is easy to cause under-testing or over-testing. , which is not conducive to the quality inspection of the converter; in addition, the three-axis and one-way vibration used to simulate the actual operating environment of the converter, the total time of vibration in the three directions is three times the equivalent test time

[0005] The above shortcomings will affect the accuracy of the final test results of the converter, which is not conducive to the accurate inspection of the quality of the converter. At the same time, the total time of the vibration test is three times the equivalent test time, and the test efficiency is low.

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