High-speed train axle box bearing test bench based on vibration rolling

Abstract

The invention discloses a high-speed train axle box bearing test bench based on vibration rolling, which is characterized by comprising an electromagnetic vibration table (1), an extended table (2), a vertical force loading unit, a tested part, a spindle (12), a universal coupling (15) and a motor (16). The test bench can be used for axle box bearing test for a high-speed train at up to 350km / h.

Description

technical field [0001] The invention relates to a high-speed train axle box bearing test bench based on rolling vibration. Background technique [0002] Axlebox bearings are key components of the running part of high-speed trains. Their operating conditions, dynamic performance and service life have a vital impact on the safe, stable and efficient operation of trains. From the current actual operation of high-speed trains, it can be seen that various failures of axle box bearings have occurred frequently, and they have failed prematurely before reaching the rated life. [0003] Due to the particularity of the operating environment of high-speed trains, the axle box bearings are in service under very harsh and complex working conditions: (1) The operating interval of intercity trains (such as Chengdu-Chongqing, Yangtze River Delta) is short, and the vehicle starts, accelerates, decelerates, And braking is frequent, which means that the dynamic load range of the axlebox beari...

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Problems solved by technology

(3) The track is not smooth, such as wave grinding, triangular pit

At present, the existing railway bearing test research is mainly the fatigue test in the static state, which cannot simulate the special working condition of severe vibration caused by track irregularities

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