Test bench and test method for testing the performance of elastic parts in hydraulic shock absorbers

Abstract

The invention relates to a test bench and test method for testing the performance of an elastic part in an oil damper. The test bench comprises a test bench rack; the test bench rack is provided witha fixture; an electro-hydraulic servo control system is installed on the test bench rack; an intelligent measurement and control system is mounted at one side of the electro-hydraulic servo control system; the electro-hydraulic servo control system includes a servo oil source, a pressure detection module, and a hydraulic actuator, wherein the servo oil source is connected with the hydraulic actuator through an oil path, and the hydraulic actuator is connected with a tested oil damper; and the intelligent measurement and control system includes a display, measurement and control instrument, aninflation valve, a flow rate and flow quantity detection module, and a collection card, wherein the inflation valve is connected with the tested oil damper through an ejector pin, the inflation valveand the flow rate flow and flow quantity detection module are electrically connected with the display, measurement and control instrument. According to the test bench and test method of the invention,convenient control of pressure is realized through hydraulic oil flow quantity; and the performance of the elastic part in the oil damper can be accurately measured through flow rate and flow quantity.

Description

technical field [0001] The invention relates to the field of testing equipment for oil pressure shock absorbers, in particular to a test bench for testing the performance of elastic parts in oil pressure shock absorbers and a test method thereof. Background technique [0002] For many parts, such as shock absorbers, in the manufacturing industry of railway rail transit vehicles, it is necessary to conduct elastic tests on the elastic parts to check the maximum weight that the shock absorbers can bear. Usually, the sampling method is used to do destructive testing on a part of a batch of products. Test to determine whether the batch of products is qualified. However, this method will generate vibration when testing elastic parts, which will affect the test accuracy, and the pressure gauge can only reflect the pressure value at the moment the part is destroyed, and cannot record the whole test process, which is not conducive to technicians to analyze the performance changes of...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned technical solution still uses destructive testing, compressing the elastic parts in the shock absorber, so that the pressure on the contact surface between the thimble and the shock absorber continues to increase until the elastic elements of the shock absorber are compressed to the limit, and then the shock absorber deforms , breakage, the test results are easily interfered by other components, it is not easy to control the test conditions, and it is difficult to accurately measure the performance of the elastic parts in the shock absorber

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