High-speed railway rail corrugation dynamic detection method and device

A high-speed railway, dynamic detection technology, applied in measuring devices, railway vehicle shape measuring devices, transportation and packaging, etc.

Active Publication Date: 2018-11-20
CHINA RAILWAYS CORPORATION +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned indirect measurement methods generally use indirect indicators such as axlebox acceleration, wheel-rail force or noise to diagnose whether there is corrugation on the rail surface and its wavelength, and do not directly measure the corrugation depth.

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  • High-speed railway rail corrugation dynamic detection method and device
  • High-speed railway rail corrugation dynamic detection method and device
  • High-speed railway rail corrugation dynamic detection method and device

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Embodiment Construction

[0114] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0115] Such as figure 1 As shown, the embodiment of the present invention provides a high-speed railway rail corrugation dynamic detection method, including:

[0116] Step 101: Obtain the measured axlebox acceleration of the high-speed railway vehicle, and perform high-pass filtering on the measured axlebox acceleration according to a preset cut-off filter frequency to generate first axlebox acceleration data.

[0117] Step 102 , process the first axlebox acc...

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Abstract

The invention provides a high-speed railway rail corrugation dynamic detection method and device, and relates to the technical field of high-speed railway data detection. The method includes the following steps: obtaining the measured axle box acceleration of a high-speed railway vehicle; identifying and filtering rail welded joint signals according to an equidistant energy extremum method; determining the corrugation indexes corresponding to each acceleration signal; determining the power spectral density of acceleration signal sections which is corresponding to the corrugation indexes and larger than index threshold values; determining the energy concentration factors of the power spectral density; and determining whether rail positions corresponding to the acceleration signal sections exist rail corrugation according to the energy concentration factors. The detection of rail corrugation can be automatically performed by using the axle box acceleration.

Description

technical field [0001] The invention relates to the technical field of high-speed railway data detection, in particular to a method and device for dynamic detection of rail corrugation on high-speed railways. Background technique [0002] At present, with the continuous development of high-speed railways, the problem of rail corrugation has gradually attracted attention and research. Rail corrugation is a regular wave-like irregularity along the longitudinal surface of the rail. Unlike the random damage forms of rail surface scratches and weld inequality, rail corrugation has significant periodic characteristics. Rail corrugation has gradually become a problem that cannot be ignored in high-speed railway wheel-rail contact. Severe rail corrugation will lead to a sharp increase in the force between the wheels and rails, which not only affects the ride comfort of the train, but also produces serious wheel-rail noise, and will greatly shorten the service life of the track stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01P15/00B61K9/08
CPCB61K9/08G01N29/045G01P15/00
Inventor 刘金朝徐晓迪孙善超成棣于淼张茂轩
Owner CHINA RAILWAYS CORPORATION
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