Annular experimental device for simulating wheel-rail and bow-net contact high-frequency vibration state

Abstract

The invention discloses an annular experimental device for simulating a wheel-rail and bow-net contact high-frequency vibration state. The annular experimental device comprises an annular rail which is horizontally arranged and is in smooth transition as a whole, wherein an experimental train is arranged on the annular rail; an annular traction device for dragging the experimental train is arranged in the center of the annular rail; the annular traction device is connected with the experimental train through a rotating arm and a coupler; the experimental train moves along the annular rail under the action of the annular traction device; the experimental train comprises a train body, a bogie, a wheel pair and a pantograph; the pantograph is in contact with a cable network arranged above theannular rail; a bogie traction motor for driving the wheel pair is mounted on the bogie; and an output shaft of the bogie traction motor is connected with the wheel pair. According to the annular experimental device, a creeping phenomenon caused by train operation is simulated through two sets of power systems, namely the annular traction device and the bogie traction motor, and the wheel-rail contact state is really simulated; and compared with a complete simulation scene, the annular experimental device has the advantages that the simulation condition is greatly reduced, the simulation costis reduced, and the application prospect is good.

Description

technical field

[0001] The invention belongs to the technical field of track simulation test, and relates to a ring-shaped experimental device for simulating the high-frequency vibration state of wheel-rail and pantograph-catenary contact, in particular to a device capable of simulating wheel-rail and pantograph-catenary contact in a laboratory environment in a manner close to reality state of the experimental device. Background technique

[0002] With the increase of operation time, the railway track will have a certain regularity and periodical wear in the longitudinal direction on some parts of the rail top surface, which is similar to the wave shape. This phenomenon is called track wave wear, or wave wear for short. Track corrugation is one of the main causes of track damage, wheel-rail vibration and noise.

[0003] Corrugation can generally be divided into short-wavelength corrugation and long-wavelength corrugation. The former has a wavelength of 20-80mm and a wave de...

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