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Rail outline detection method based on abrasion value

A detection method and wear value technology, applied in the direction of railway vehicle shape measuring device, railway car body parts, railway auxiliary equipment, etc., can solve the problems of limited measurement range, inability to obtain part data of rail waist, and difficulty in alignment of measurement results, etc., to achieve The effect of improving accuracy

Inactive Publication Date: 2013-06-26
TONGJI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the measurement range of many instruments is limited, and it is impossible to obtain the data of the rail waist, or even the complete profile data of the rail head. Only the profile data of the top surface of the rail and the working edge can be obtained.
For this type of instrument, it is very difficult to align the measurement results with the standard surface

Method used

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  • Rail outline detection method based on abrasion value
  • Rail outline detection method based on abrasion value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] A rail profile detection method based on wear value, its processing flow is as follows figure 1 shown, including the following steps:

[0030] Step S1: Measure the rail profile data by the rail profile measuring instrument, the measured data does not include the data of the rail waist part, and send it to the data processing device;

[0031] Step S2: the data processing device generates a rail profile data curve through the rail profile data;

[0032] Step S3: Fitting the rail profile data curve with the standard profile curve, the principle of fitting is that there is basically no wear on the outer side and lower part of the rail head;

[0033] Step S4: Calculate the wear value at each position on the top of the rail according to the fitted contour data curve, and each position is marked by the angle between the tangent line of the point and the horizontal plane, and the angle range is 1-90°, such as figure 2 angle indicated in .

[0034] Step S5: Comparing the obt...

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Abstract

The invention relates to a rail outline detection method based on an abrasion value. The rail outline detection method comprises the following steps of (1) using a rail profile gauge to measure rail outline data; (2) using the rail profile gauge to send the rail outline data to a data processing device; (3) using the data processing device to receive the rail outline data and conduct data processing to obtain the abrasion value of a rail outline; and (4) making a comparison on the abrasion value obtained in the step (3) and a setting threshold value, and judging that the rail outline is excessively worn when the abrasion value is higher than the threshold value. Compared with the prior art, the rail outline detection method enables imitative effects of the rail outline data and a standard profile curve to be good and improves accuracy of calculation of the abrasion value.

Description

technical field [0001] The invention relates to the field of rail engineering measurement, in particular to a rail profile detection method based on wear values. Background technique [0002] The state of the rail profile is one of the main factors determining the wheel-rail contact relationship, which has an important impact on the safety and comfort of rolling stock operation. Therefore, how to correctly measure and evaluate the rail profile (wear calculation) is an urgent problem to be studied and solved in the field of railway science. Scholars and scientific research institutions at home and abroad have done a lot of research work in this area, and manufactured a variety of rail profile measuring instruments. According to the different measurement principles, they can basically be divided into the following two categories: [0003] (1) Contact mechanical measurement [0004] (2) Non-contact optical measurement [0005] At present, according to the usage situation, t...

Claims

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Application Information

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IPC IPC(8): B61K9/08
Inventor 陈文许玉德李海锋周宇陈雯
Owner TONGJI UNIV
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