Method, device and system for monitoring high-speed electric multiple unit train bogie bearing faults

Abstract

The invention provides a method, device and system for monitoring high-speed electric multiple unit train bogie bearing faults. The method includes: obtaining vibration signals of a bogie bearing axle box, noise signals in a train compartment and running speed of a train; obtaining a vibration signal acceleration effective value according to the vibration signals; performing spectral analysis on the vibration signals and the noise signals, and extracting vibration characteristic frequency and noise characteristic frequency from an analysis result; and generating monitoring information according to the vibration signal acceleration effective value, the vibration characteristic frequency, the noise characteristic frequency and the speed. The method, device and system for monitoring high-speed electric multiple unit train bogie bearing faults is timely and accurate in monitoring result, and can provide reference for workers in time so as to improve traveling safety of the high-speed electric multiple unit train further.

Description

technical field [0001] The invention relates to a fault monitoring technology, in particular to a method, device and system for fault monitoring of a bogie bearing of a high-speed EMU train. Background technique [0002] The bogie bearing is a key component for the safe operation of high-speed EMU trains, and it is also the most easily damaged component. The failure of the bearing is directly related to the safety of transportation. During the long-term operation of the train, the bearing not only needs to transmit force, but also has relative sliding with the journal surface. In the case of high-speed and heavy-load operation, bearing failures tend to expand rapidly, causing hot shafts in a short period of time, and eventually leading to major traffic accidents. [0003] At present, almost all domestic high-speed EMU train bogie bearing fault monitoring adopts the axle temperature monitoring and alarm system. The axle temperature monitoring and alarm system uses the heat ...

AI Technical Summary

Problems solved by technology

Therefore, temperature monitoring is not suitable for so-called local damage faults such as pitting corrosion and local spalling.

In addition, when the high-speed EMU train is running, the working environment around the shaft temperature sensor is relatively complicated, especially when the train is over-phased, the train crosses and passes through the tunnel, it may cause great interference to the collected temperature data, and the shaft temperature often occurs. False alarms lead to midway parking, which seriously affects the transportation order

In short, there are still certain risks in using the shaft temperature monitoring and alarm system to prevent accidents

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