Portable laser measuring device for wheel circumference surface roughness and non-rounding abrasion

Abstract

The invention relates to a portable laser measuring device for wheel circumference surface roughness and non-rounding abrasion, a laser head (11) of a laser displacement sensor (1) is fixed on a laser head supporting seat (12); a serial port and a USB interface of the laser displacement sensor (1) are respectively connected with the serial port and the USB interface of a computer (5); and a truckle (21) of a truckle mechanism (2) is axially connected with an increment photoelectric encoder (22), and a signal output end of the increment photoelectric encoder (22) is connected with a control signal input end of the laser displacement sensor (1). The testing device can conveniently measure the surface roughness and non-rounding abrasion conditions of various wheel circumferences on the spot; the device is convenient to carry and has high degree of automation, simple and convenient operation, high control and testing precision and good reproducibility of test data.

Description

technical field [0001] The invention relates to a detection device for railway wheels. Background technique [0002] As an important running part of railway locomotives and vehicles, wheels need to safely and reliably bear loads and run quickly on rails. With the rapid development of high-speed, heavy-duty railways and urban rail transit, the requirements for wheel reliability are getting higher and higher: [0003] The circumferential non-circular wear of the wheel tread will cause a series of changes in the dynamic response of the vehicle track system, which will have a great impact on the driving stability, safety, comfort and service life of various components of the vehicle track system: 1. Short wavelength of the wheel tread The wavy non-circular wear of the wheel and rail will cause high-frequency impact loads on the wheel and rail, and the long-wavelength non-circular wear will cause an increase in the low-frequency wheel-rail contact force, resulting in damage to t...

AI Technical Summary

Problems solved by technology

[0003] The circumferential non-circular wear of the wheel tread will cause a series of changes in the dynamic response of the vehicle track system, which will have a great impact on the driving stability, safety, comfort and service life of various components of the vehicle track system: 1. Short wavelength of the wheel tread The wavy non-circular wear will cause high-frequency impact loads on the wheel and rail, and the long-wavelength non-circular wear will cause an increase in the low-frequency wheel-rail contact force, resulting in damage to the wheel-rail and vehicle unsprung structures

2. The non-circularization of the wheel circumference will also cause periodic movement of the vehicle in the vertical and horizontal directions, which will intensify the wear between the wheels and rails; if the long-wavelength side wear of the straight track rails and the pit-shaped side wear of the wheels will not only affect the service of the wheels and rails time, serious conditions may trigger derailment

3. The impact and noise caused by the non-circular wear of the wheel will affect the comfort of passengers

Increasing the roughness can improve the adhesion coefficient of the wheel and rail to ensure safe operation, but at the same time it will also have a very large impact on the damage of the wheel and rail

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