Method for measuring track corrugation by utilizing axle box vibration and impact information

Abstract

The invention provides a method for measuring track corrugation by utilizing axle box vibration and impact information. A vibration and impact information acquisition device contains a rotating speed sensor S arranged on a wheel set shaft of an operating vehicle, a vibration and impact detection sensor A1 and a vibration and impact detection sensor A2 which are arranged on an axle box bearing block at the two ends of a wheel set, an online monitoring device JKQ and a corrugation ground analysis system DMXT, wherein the rotating speed sensor S, the vibration and impact detection sensor A1 and the vibration and impact detection sensor A2 are connected with the online monitoring device JKQ, and detection, acquisition, diagnosis, analysis and decision of vehicular corrugation information of the operating vehicle are realized by virtue of the online monitoring device JKQ or by downloading data of the online monitoring device JKQ to the corrugation ground analysis system DMXT. The method for measuring the track corrugation by utilizing the axle box vibration and impact information has the advantages that the axle box vibration and impact information of the operating vehicle are acquired, based on a generalized resonance measurement principle, vehicular real-time track corrugation wave length and wave depth measurement and analysis or track corrugation wave length and wave depth measurement and analysis after downloading is completed are realized, and the manual workload is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of rail transit track detection, and specifically relates to a method for measuring rail corrugation by using axlebox vibration and impact information, which is mainly used for detecting the vibration acceleration of the axlebox supporting the wheel axle during the movement of rail transit vehicles such as subways , Impact information, real-time measurement of the wavelength and wave depth of orbital corrugation. Background technique [0002] Track corrugation is the irregularity of the wavy shape of the track surface and is a form of track damage. Track corrugation will have a great impact on the wheel-rail relationship and the failure of the train running part. The hazards caused are: first, potential safety hazards. Grinding and expansion will deteriorate the working status of the wheels, vehicles and rail-related components, accelerate the mechanical damage of the bogie and other related components, inc...

AI Technical Summary

Problems solved by technology

The measurement accuracy of this inertial method or inertial reference method cannot be guaranteed. Since the acceleration is related to the speed of the rail inspection vehicle, the speed of the rail inspection vehicle cannot reach the speed during operation, the acceleration signal is weak, and the signal-to-noise ratio is low. Integral calculation low-frequency signal is easy to cause integral saturation, which is a measurement method that needs to be improved

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