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Track detection method

A track detection and track technology, which is used in railway vehicle shape measuring instruments, railway car body parts, railway auxiliary equipment, etc. Accuracy and detection efficiency, penetration ability and strong anti-interference ability, and the effect of strong anti-interference ability

Inactive Publication Date: 2015-03-25
CRRC BEIJING ERQI LOCOMOTIVE CO LTD
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Problems solved by technology

[0004] When using the short chord measurement method for wave wear detection, the amplitude of all measurement items needs to be drawn on the drawing, and manual judgment is required to calculate the excess and deduct points. Therefore, the problem of large or small measurement data often occurs. The measurement results It cannot truly reflect the wear of the rail, which will cause trouble for the subsequent grinding operation

Method used

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  • Track detection method

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Embodiment Construction

[0014] Please refer to figure 1 , the specific steps of a track detection method provided in the embodiment of the present invention are as follows:

[0015] Step 101, simultaneously irradiating the top surface and both sides of the track with laser light.

[0016] Since the top surface and both sides of the track will be worn by waves during use, in order to establish a three-dimensional contour map of the track and obtain accurate values ​​of wave wear in the subsequent steps, it is necessary to first irradiate the top and two sides of the track with laser . Due to the strong penetrating ability and anti-interference ability of laser, the use of laser to illuminate the top surface and both sides of the track can improve the clarity of subsequent image shooting, so that subsequent measurement data will not be affected by dust or other light, ensuring measurement Data Accuracy. .

[0017] Preferably, step 101 includes step 106 and step 107 .

[0018] Step 106, simultaneou...

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Abstract

The invention provides a track detection method. The track detection method comprises the steps that lasers are used for irradiating the top face and the two side faces of a track at the same time; images of the parts, irradiated by the lasers, of the track are shot; image processing is carried out on the images through image processing equipment, so that a stereoscopic skeleton map of the track is built according to the images; image processing is carried out on the stereoscopic skeleton map through the image processing equipment, so that the geometrical parameter of the track is extracted according to the stereoscopic skeleton map; the geometrical parameter of the track is compared with the geometrical parameter of a standard track, and the numerical value of undulatory wear of the track is calculated. The detection precision and detection efficiency of the undulatory wear of the track can be improved.

Description

technical field [0001] The invention relates to track detection technology, in particular to a track detection method. Background technique [0002] Due to the increasing use of high-speed and heavy-duty rail vehicles, the generation of rail wave wear has been intensified. After the rail has wave wear, in order to control the development of wave wear speed, it is necessary to improve the rail section through preventive grinding of the rail. Before the rail is polished, it is usually necessary to detect the rail and obtain the measurement value of the wave wear of the rail to provide a reference for the subsequent grinding operation. [0003] At present, one of the rail wave wear detection technologies is to use the short chord measurement method. In the short chord measurement method, the contact displacement meter is used to obtain the distance between the three measuring points between the longitudinal beam and the rail, and the two measuring points on the rail The connec...

Claims

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Application Information

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IPC IPC(8): B61K9/08
CPCB61K9/08
Inventor 丁明辉母特陈留金李涛
Owner CRRC BEIJING ERQI LOCOMOTIVE CO LTD
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