Steel rail wear measurement method and device

A technology of rail wear and measurement method, applied in the field of measurement, can solve the problems of low measurement accuracy and low data collection frequency, and achieve the effects of improving matching accuracy, improving measurement accuracy and reducing influence

Active Publication Date: 2019-06-07
WUHAN WUDA ZOYON SCI & TECH
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Problems solved by technology

The existing non-contact method has the defects of low data collection frequency and low...

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  • Steel rail wear measurement method and device
  • Steel rail wear measurement method and device
  • Steel rail wear measurement method and device

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Embodiment Construction

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. 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.

[0020] In view of the low sampling frequency in the existing technology, and factors such as rail corrosion, it is easy to cause more abnormal values ​​in the measured rail profile, and it is impossible to effectively use the measurement results of similar positions to correct the error in the measurement, which leads to the measurement The defect of low precision.

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Abstract

The embodiments of the present invention provide a steel rail wear measurement method and device. The method includes the following steps that: a line scanning three-dimensional measuring sensor is adopted to continuously measure a steel rail, so that measurement data can be obtained; the measurement railhead contour, measurement rail web contour and measurement rail base contour of the steel railare obtained according to the measurement data; the measurement matching contours are matched with standard matching contours, so that the deviation parameters of the measurement matching contours and the standard matching contours are obtained; and coordinate transformation is performed on the measurement rail head contour according to the deviation parameters, the measurement rail head contourwhich has been subjected to the coordinate transformation is compared with a standard rail head contour, and the wear measurement value of the steel rail is calculated based on a comparison result. According to the steel rail wear measurement method and device provided by the embodiments of the present invention, the line scanning three-dimensional measuring sensor can quickly obtain the high-precision steel rail contours, that is, the measurement points of the steel rail contours in a cross-sectional direction and a measurement moving direction are relatively dense, and therefore, the influence of steel rail surface undulating texture on measurement results can be decreased; and the accuracy of the measurement results can be improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of measurement, and more specifically, to a method and device for measuring rail wear. Background technique [0002] During the operation of the train, the wheels and rails are in contact with the rail head, which will cause wear and tear, and the wear is usually concentrated on the tread of the rail head, the arc section of the side and the straight section of the side. Once the rail wear (wear) exceeds the limit, it will bring major hidden dangers to the safety of railway transportation, so it is very important to measure rail wear with high precision. The existing rail wear measurement methods include contact measurement and non-contact measurement. Among them, the contact measurement is generally carried out by manual sampling with a special caliper, which has low measurement efficiency and cannot quickly conduct a general survey of rail wear. Among them, the non-contact measu...

Claims

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Application Information

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IPC IPC(8): G01B11/24
Inventor 张德津曹民林红卢毅王新林文艺
Owner WUHAN WUDA ZOYON SCI & TECH
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