High-speed EMU axle box bearing three-degree-of-freedom dynamic loading reliability test bench

Abstract

The invention discloses a high-speed electric multiple unit axle box bearing three-degree-of-freedom dynamic load reliability test platform and aims to overcome a problem that an axle box bearing reliability test can be not carried out in a practical operation. The test platform comprises a torque detection testing device and an axle box bearing reliability test device. The torque detection testing device is connected with the axle box bearing reliability test device through a cross shaft type universal shaft coupler. The axle box bearing reliability test device comprises a simulated frame side beam test device, a three-degree-of-freedom vibration simulation test device and a shaft assembly for an axle box bearing test. The three-degree-of-freedom vibration simulation test device comprises a vibration T type beam and a lateral actuator. The shaft assembly for the axle box bearing test is fixed on the vibration T type beam through bolts. The simulated frame side beam test device and the three-degree-of-freedom vibration simulation test device are placed in a parallel way. The parallel distance of the vibration T type beam in the three-degree-of-freedom vibration simulation test device and a simulated frame side beam supporting platform in the simulated frame side beam test device is 20 mm to 40 mm.

Description

technical field [0001] The invention relates to a test bed for detecting the parameters of a transmission system of a rail vehicle, more specifically, the invention relates to a three-degree-of-freedom dynamic loading reliability test bed for an axle box bearing of a high-speed train set. Background technique [0002] At present, my country's EMU technology is developing rapidly. The maximum speed of EMUs in operation has reached 350km / h, and the maximum speed of EMUs under development is close to 500km / h. With the increase of train speed and vehicle axle load, the vibration between the vehicle and the track is intensified, the running stability of the vehicle is reduced, and the problems of train safety and ride comfort are becoming more and more prominent. At the same time, with the on-line operation of a large number of high-speed EMUs, the maintenance work of EMUs at all levels is also carried out. Among them, the maintenance of axle box bearings is an important part of ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problem that the reliability test of the axle box bearing in the actual operation of the train in the prior art is not feasible, and to provide a three-degree-of-freedom dynamic loading reliability test bench for the axle box bearing of the high-speed EMU

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