Portable outline detection device for train wheel tread

Abstract

The invention discloses a portable detection device used for measurement of a train wheel tread outline. Through application of the device disclosed by the invention, the high-precision quick measurement of wheel tread wear can be completed. The portable detection device disclosed by the invention is realized by the technical scheme that a stepping motor is used to drive a screw rod and make a nut move along a wheel axis direction; and by a V-shaped spherical guide rail and a profiled motion mechanism, moving of the nut drives a laser displacement sensor to carry out two-dimensional motion in a plane passing a wheel axle, and tracks of the motion copy a standard tread outline of the wheel, so that the tread outline is scanned and measured point by point. The profiled measurement is realized, so that the sensor with a small measurement scope is needed to satisfy measurement requirements for the whole tread outline. Measurement accuracy and resolution are higher. Outline dimensions of an instrument are smaller. The sensor is installed and designed in an inclined manner, so that the problem that the measurement accuracy is reduced or even the measurement cannot be realized thanks to an oversized included angle between a measurement light beam and a normal line of a measured point at a place with a large rate of curve of the tread outline is solved.

Description

technical field [0001] The invention relates to a portable device for detecting the tread profile of a train wheel, which can quickly detect the wear condition of the wheel tread, so as to meet the needs of the development of high-speed railways for the detection instrument of the wheel tread. Background technique [0002] With the development of high-speed railways, the speed of trains has increased significantly, and operations such as sudden acceleration, deceleration, and emergency braking have become more frequent, resulting in increased wear between the wheels and rails. Therefore, it is necessary to regularly detect the wear of the wheel treads. Therefore, there is an urgent need for a wheel tread testing instrument that is miniaturized, intelligent, and has high detection accuracy and detection efficiency. [0003] At present, there are two main types of wheel tread wear detection methods: one is manual measurement using contact detection tools, which has low detecti...

AI Technical Summary

Problems solved by technology

This solution combines the profiling measurement technology with the laser displacement sensor, which not only reduces the requirements for the measurement range of the sensor, but also solves the problem of low measurement accuracy or even distortion where the slope of the wheel tread profile curve is large

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