Three-branch six-degrees-of-freedom low-temperature test bed of railway vehicle air spring

Abstract

The present invention relates to a three-branch six-degrees-of-freedom low-temperature test bed of a railway vehicle air spring. The test bed comprises a three-branch test platform, a loading quality arc block, a refrigeration cycle system, horizontal actuator mechanisms, a T-shaped slot foundation, a capacity-variable air reservoir and an adjustable support rammer. The three-branch six-degrees-of-freedom low-temperature test bed of the railway vehicle air spring performs test aiming at the low-temperature performance of the railway vehicle air spring, the three-branch test platform is cooperated with the three horizontal actuator mechanisms to simulate the six-degrees-of-freedom motion condition of the air spring in the rail train operation, the loading quality arc block simulates the qualities of the vehicle frame and the vehicle body located on the air spring, and the refrigeration cycle system simulate the intensity changing condition of the air spring in the low temperature condition. The three-branch six-degrees-of-freedom low-temperature test bed of the railway vehicle air spring can effectively improve the safe operation of the high-speed train set, improve the riding comfortableness of the high-speed train set and prompt the development of the train-set technology and is convenient for railway vehicle enterprises to employ the test bed to perform object test and performance comparison of the selected air spring.

Description

technical field [0001] The invention belongs to the field of rail vehicle testing, in particular to air spring low-temperature performance test bench equipment in the elastic suspension of rail vehicles. Background technique [0002] At present, my country's high-speed train technology is developing rapidly. The latest EMU has an operating speed of 380km / h, and the newly developed EMU has a speed close to 600km / h. The increase of train speed and the increase of vehicle axle load aggravate the impact vibration between the wheel set and the track. The ride comfort, safety performance and stability of rail vehicles are becoming more and more prominent. Air spring, as the second suspension component of rail vehicle, not only bears the weight of the vehicle body, but also plays a role of buffering and shock absorption during the operation of the rail vehicle. The quality of its performance directly affects the operating comfort and safety of the rail vehicle. The air spring is ...

AI Technical Summary

Problems solved by technology

The use of the trifurcated six-degree-of-freedom low-temperature test bench solves the problem of the air spring in the low-temperature test that does not consider the performance of the actual operating conditions and the flow of gas in the air spring and the additional air chamber in the prior art.

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