Method and system for detecting size of train wheelset online

Abstract

The invention discloses a method and a system for detecting the size of a train wheelset online. According to the invention, the diameter of a wheel flange vertex circle and the train speed are acquired through laser correlation photoelectric switches, a wheel flange lowest point and the height between the wheel flange lowest point and the ground are positioned through an eddy-current sensor, points on a wheel are detected through inside and outside 1D laser displacement sensors so as to acquire a wheel tread contour line, and thus the wheel flange height, the wheel flange thickness and the wheel diameter are acquired. The method disclosed by the invention is low in cost, and detection for the wheelset size such as the wheel flange height, the wheel flange thickness and the wheel diameter can be realized by only requiring two 1D laser displacement sensors, four laser correlation photoelectric switches and the eddy-current sensor; and the diameter of the wheel flange vertex circle and the train speed can be calculated by the four laser correlation photoelectric switches, the eddy-current sensor determines the height between the wheel flange lowest point and the ground and a serial number of a sampling point at the moment, the outside 1D laser displacement sensor is combined, relative wheelset size of the detected wheel can be acquired through corresponding algorithm processing, and the operation is simple.

Description

technical field [0001] The invention belongs to the technical field of traffic safety engineering, in particular to an online detection method and system for the size of a train wheel set. Background technique [0002] The wheel set is an extremely important part to ensure the safe operation of the train on the rails. With the rapid development of urban traffic in my country, the train is required to have a higher operating speed and safety guarantee. Therefore, it is of great significance to detect the size parameters of the wheel set in real time. . During the long-term running of the train, friction will occur between the wheel set and the surface of the rail, and friction will also occur between the wheel rim and the inner side of the rail when the train passes through a curve, which will inevitably cause wear to the wheel set, resulting in wheel Changes in size will reduce the comfort of passengers and the reliability of safe train operation. [0003] The detection met...

AI Technical Summary

Problems solved by technology

However, in the process of measuring the size of the wheel set, there are still problems such as the measurement device is too complicated, the installation and debugging are difficult, and the measurement accuracy is not high.

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