A Method for Measuring Rail Corrugation Using Axlebox Vibration and Shock Information

Abstract

A method for measuring track corrugation using axlebox vibration and impact information, the vibration and impact information acquisition device includes a speed sensor S installed on the wheel set shaft of an operating vehicle, and a vibration sensor S installed on the axle box bearing seats at both ends of the wheel set Shock detection sensor A1, vibration shock detection sensor A2, online monitoring device JKQ and corrugation ground analysis system DMXT, the speed sensor S, vibration shock detection sensor A1, vibration shock detection sensor A2 are connected to the online monitoring device JKQ, the The online monitoring device JKQ or download its data to the corrugation ground analysis system DMXT to realize the detection, collection, diagnosis, analysis and decision-making of vehicle-mounted corrugation information of operating vehicles. The invention collects the vibration and impact information of the axle box of the operating vehicle, and based on the measurement principle of generalized resonance, realizes the measurement and analysis of the wavelength and wave depth of the track corrugation in real time or after downloading on the vehicle, greatly reducing the manual workload.

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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