Rail surface wave wear and damage detection device and method

Abstract

An embodiment of the present application provides a rail surface wave wear and damage detection device, the device includes a biaxial measuring vehicle, a measuring equipment base, and a first wheel, the first wheel is installed on the lower part of the measuring equipment base, The biaxial measuring vehicle is fixedly connected to the base of the measuring equipment. The biaxial measuring vehicle includes a fixing part, a bearing part, a second wheel, a displacement sensor and an angular velocity sensor. The second wheel is mounted on the lower part of the carrier, the angular velocity sensor is arranged on the carrier, and the displacement sensor is arranged at the center of the second wheel. The displacement data and angular velocity data are obtained by the displacement sensor and the angular velocity sensor respectively, the linear velocity is obtained according to the displacement data, and then the severity of the wave wear and damage on the track surface is judged in real time according to the ratio of the angular velocity to the linear velocity, and the real-time alarm is issued when the limit is exceeded. Afterwards, accurate values ​​of wave wear and damage can be obtained through precise processing algorithms.

Description

technical field [0001] The present application relates to the field of rails, and in particular, to a device and method for detecting wave wear and damage on a rail surface. Background technique [0002] Due to the natural environment, the quality of the rail itself, and the dynamic action of the train, the surface of the rail will be damaged, worn, and wave wear (referred to as "wave grinding"). The wave wear and damage on the surface of the rail has a great impact on the operation of the railway track line. It is the source of vibration and noise when the locomotive is running, which affects the service life of the locomotive and the comfort of riding, and increases the cost of railway maintenance. It may cause the train to derail and cause huge loss of life and property. Practice has shown that rail wave wear and damage must be repaired in the early stage of formation, otherwise the deterioration will gradually accelerate with time. Therefore, how to quickly and accurat...

AI Technical Summary

Problems solved by technology

This measurement method has the following disadvantages: it is difficult to always keep close contact with the measured rail tread due to the limitation of the dynamic characteristics of the mechanism; there are large or small contact arcs when in contact with the measured rail tread, which will cause undue signal distortion ;Abnormal vibration of the mechanism can easily lead to inertial displacement integration saturation and impact damage to the acceleration sensor; the main problems of the special floating measurement probe are easy to wear and fatigue damage during the movement of the rail tread, which is not conducive to the use of complex railway works

This measurement method has the following disadvantages: the abnormal vibration of the detection equipment will easily lead to the saturation of the inertial displacement integral; the problem of the impact damage of the acceleration sensor by the abnormal vibration of the detection equipment still exists, and there are few successful applications in practice.

The shortcomings of this type of detection method are as follows: the measurement efficiency is low and the labor intensity is high due to the fixed-point measurement method; the lap joint error is large due to the need for data lapping; it is not competent for major problems such as continuous measurement of wave wear and damage in a large range

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