Wheel profile laser measurement device

Abstract

The invention relates to a wheel profile laser measurement device. An electromotor is fixed on one end of a base, and is connected with a drive screw, and an incremental photoelectric encoder is mounted on the other end of the drive screw; a guide rod which is parallel with the drive screw is arranged on the base as well, and the bottom of the base is fixed on a rail through supporting blocks; a movable slider is sleeved on the guide rod, and also cooperates with the drive screw by means of screw threads; a movable rod is fixed on the movable slider, a laser head of a laser displacement sensor is fixed on the top of the movable rod, the serial port and the USB port of the laser displacement sensor are respectively connected with the serial port and the USB port of a computer, and the signal output end of the incremental photoelectric encoder is connected with the control signal input end of the laser displacement sensor. The test device can conveniently measure the abrasion change of a wheel profile on the spot; moreover, the device is convenient to carry and easy and convenient to operate, the measurement precision is high, and the repeatability of test data is good.

Description

technical field [0001] The invention relates to a detection device for the profile of a railway wheel. Background technique [0002] As an indispensable and important running part of railway passenger cars, freight cars and locomotives, train wheels mainly function to safely and reliably bear loads and run quickly on rails; they have extremely high requirements for their reliability. During the operation of railway wheels, due to the effect of wheel-rail friction, the wheel profile (the lateral surface of the wheel) will be worn to a certain extent. The worn profile will have a certain difference from the standard wheel profile. This will affect the wheel-rail relationship. Matching will have a greater impact, which in turn will affect the safe operation of the train. [0003] In recent years, with the continuous development of my country's railways to heavy loads and high speeds, the wear of wheel profiles has become more and more serious. The main forms of wheel surface ...

AI Technical Summary

Problems solved by technology

[0004] Most of the measurement of the wheel profile in my country uses a contact measuring instrument. This measuring instrument measures the change of the profile by rolling the ball (roller) at the front end of the rocker arm on the wheel profile. Since the ball has a certain diameter, when the wheel appears When the diameter of the grooved wear pit or spalling pit is smaller than the diameter of the ball, it is not possible to use this gauge to measure the true wear and profile change of the wheel.

Images