On-line rail vehicle bearing failure detection device and method

Abstract

The invention provides an on-line rail vehicle bearing failure detection device and method. The device comprises a low-noise track located on a path by which a rail vehicle to be detected passes; a vibration sensing module comprising at least one vibration sensor unit and a signal output end and disposed on the low-noise track; a microphone module including at least one microphone unit and a signal output end and located at position at a side of the low-noise track and close to the vibration sensing module; and a data processing module including a signal input end and a signal output end, wherein the signal input end of the data processing module is connected with the signal output end of the vibration sensing module and the signal output end of the microphone module. The on-line rail vehicle bearing failure detection device and method can effectively improve the bearing failure detection rate and reduce the fault omitting probability of bearing failure.

Description

technical field [0001] The invention belongs to the field of rail transit, and in particular relates to an online fault detection device and method for rail vehicle bearings. Background technique [0002] Among all kinds of faults that affect the safe operation of rail transit vehicles, bearing faults are one of the most important types of faults. The train bearing is an important part of the bogie. Its static load and dynamic load are large, and its working conditions are harsh. It has been working in high and low temperature, vibration, and impact environments for a long time. A general freight car has hundreds of bearings, and a passenger train has at least dozens of bearings. The failure of any one bearing may affect the transportation safety of the entire train, which can easily lead to breakage of axles, bushings, bearings or wheels, resulting in The train derailed. According to statistics, most of the axle fracture accidents are caused by bearing failure. Therefore...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an online detection device and method for rail vehicle bearing faults, which are used to solve the problem of offline diagnosis methods, vehicle-mounted online diagnosis methods, and trackside online diagnosis methods in the prior art. The method is time-consuming, labor-intensive, low detection efficiency, complicated monitoring device, high probability of false alarms and missed alarms, susceptible to interference from environmental noise and train running noise, high false alarm rate and low fault recognition rate, etc.

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