Detection method and device of track regularity state

Abstract

The invention provides a detection method and device of a track regularity state. The track irregularity is measured through a preset chord measuring method, and the chord measuring value corresponding to the preset measuring position is obtained; according to the incidence relation of the chord measuring value and the track irregularity, a mathematical model between the chord measuring value and the track irregularity is established; back calculation computing is carried out on the chord measuring value according to the mathematical model, and the track geometric shape and location are obtained; and filtering is carried out on the track geometry, and the track irregularity is output. The mathematical model between the track irregularity and the chord measuring value is established again, and the chord measuring value serves as a state quantity for the track irregularity. Back calculation is carried out on the track irregularity through the state quantity. By means of the method, a transfer function can be basically stabilized within 1+ / -0.2, the track irregularity can be measured more accurately, and the principle of least squares is involved in a one-chord and multi-point chord measuring method. The track irregularity is corrected through the multi-point measuring value, and the measuring precision and the measuring resolution ratio of the detection method and device are improved.

Description

technical field [0001] The invention relates to the field of railway tracks, in particular to a method and device for detecting a smooth state of a track. Background technique [0002] Due to the existence of random track irregularities, the rolling stock running on the track will vibrate, and this vibration will act on the track instead, resulting in random track force. Under the repeated action of this force, the track will deform or even deteriorate continuously, thus affecting the comfort and even safety of driving. [0003] A common detection method for track smoothness in related technologies is the chord measurement method; the chord measurement method was once regarded as an important track irregularity detection method, which includes two-point difference method, three-point mid-chord method, three-point Deviating chord method and multi-point chord measurement method, etc. Wherein, the above-mentioned methods all take the chord line as the measurement reference, m...

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Problems solved by technology

Therefore, it can be seen that the existing chord measurement method cannot truly reflect the smooth state of the track

[0005] In the research, the inventor found that the method of using the chord measurement value directly as the approximate value of the track irregularity in the prior art cannot truly reflect the smooth state of the track. To solve this problem, no effective solution has been proposed so far

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