Method and device for detecting upward arching of track board

Abstract

The invention provides a method and a device for detecting arching of a track board. Based on the method, when a target track needs to be detected and maintained, a detection train can be firstly controlled to run on the target track, and detection data are collected according to a preset sampling frequency in the running process; wherein the detection data comprises mileage data, driving speed and framework vertical acceleration; according to the mileage data, dividing the collected framework into a plurality of segments in a vertical acceleration manner; according to the detection data, calculating acceleration signal main frequency and excitation frequency of each segment in the plurality of segments; and determining whether the target track has the track board arching or not according to the acceleration signal main frequency and the excitation frequency of each segment. Through calculation and according to the acceleration signal main frequency and the excitation frequency of each segment, whether the target track has the track board arching or not can be efficiently and accurately detected with low detection cost.

Description

technical field [0001] This specification belongs to the technical field of railway tracks, and in particular relates to a method and a device for detecting arches on track slabs. Background technique [0002] With the increase of the service life and the damage of the external environment, the track slab on the track sometimes has a phenomenon of arching, which affects the comfort of the train operation and even threatens the safety of the train. [0003] Based on the existing methods, most of them use dynamic detection of track geometric irregularity or static detection of track geometric shape and position to detect and judge whether there is arching on the track slab. [0004] However, when the above detection method is implemented, there are often technical problems such as high detection cost, low detection efficiency, poor detection accuracy, and easy omission of arching on the track with a small amplitude. [0005] For the above problems, no effective solution has b...

AI Technical Summary

Problems solved by technology

[0004] However, when the above detection method is implemented, there are often technical problems such as high detection cost, low detection efficiency, poor detection accuracy, and easy omission of arching on the track with a small amplitude.

[0005] For the above problems, no effective solutions have been proposed so far

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