Portable laser measuring device for wheel circumference surface roughness and non-rounding abrasion
A circumferential surface, laser measurement technology, applied in measurement devices, optical devices, instruments, etc., can solve the problems of wheel-rail and vehicle unsprung structure damage, affecting the service time of the wheel-rail, affecting the comfort of passengers, etc., to achieve convenient detection. Fast, fast data transmission, accurate and reliable measurement data
Active Publication Date: 2011-06-15
SOUTHWEST JIAOTONG UNIV
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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
Method used
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specific Embodiment approach
[0031] figure 1 Shown, a kind of specific embodiment of the present invention is:
[0032] A portable laser measuring device for surface roughness and non-circular wear of a wheel, which consists of: the laser head 11 of the laser displacement sensor 1 is fixed on the laser head support seat 12; the serial port and the USB interface of the laser displacement sensor 1 are respectively connected to the computer The serial port of 5 is connected with USB interface;
[0033] figure 1 , figure 2 Shown, the specific composition of small wheel mechanism 2 is: small wheel 21 is fixed on the U-shaped support block 24 by bearing 23, and the bottom of U-shaped support block 24 is hinged with support seat 26 through connecting rod 25; The middle part of connecting rod 25 is connected with Tension spring 27, the other end of tension spring 27 is connected with supporting seat 26.
[0034] The specific structure that the laser head 11 is fixed on the laser head support seat 12 is: the ...
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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...
Claims
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IPC IPC(8): G01B11/30G01B11/24
Inventor王文健郭俊吴磊房建英刘启跃金学松周仲荣石心余
OwnerSOUTHWEST JIAOTONG UNIV