Device and method for wheeltrack friction fatigue test

A friction fatigue, experimental device technology, used in measuring devices, instruments, scientific instruments, etc.

Pending Publication Date: 2017-11-03
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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It cannot provide accurate and reliable experimental basis for the de...

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  • Device and method for wheeltrack friction fatigue test
  • Device and method for wheeltrack friction fatigue test
  • Device and method for wheeltrack friction fatigue test

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specific Embodiment approach

[0023] figure 1 Shown, a kind of specific embodiment of the method of the present invention is: a kind of wheel-rail friction fatigue experiment device, comprises the DC motor 10 that is installed on the support 9, the support 9, the output shaft of DC motor 10 and the big wheel of simulation rail 7 are connected, the hydraulic cylinder 1 is installed on the crossbeam 8 of the machine base 9, the end of the piston rod 3 protruding downward from the hydraulic cylinder 1 is connected with the small wheel mounting seat 12, and the small wheel 5 simulating a high-speed wheel is installed on the On the steamboat mount 12; It is characterized in that:

[0024] A magnetic powder brake 11 is installed on the small wheel mount 12, and one end of the shaft of the small wheel 5 passes through the bearing 4 and is connected with the output shaft of the magnetic powder brake 11;

[0025] The rim of the small wheel 5 is arc-shaped along the width direction, and the rim of the big wheel 7 i...

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Abstract

The invention discloses a device and method for a wheeltrack friction fatigue test. The device comprises a machine base and a direct current motor installed on the machine base. An output shaft of the direct current motor is connected with a large wheel of a simulated steel rail, a hydraulic cylinder is mounted on a crossbeam of the machine base, the end of a piston rod of the hydraulic cylinder extending out downwards is connected with a small wheel mounting base, and a small wheel for simulating a high-speed wheel is installed on the small wheel mounting base through a bearing. A magnetic powder brake is installed on the small wheel mounting base, one end of the a shaft of the small wheel penetrates the bearing and then is connected with an output shaft of the magnetic powder brake, a rim of the small wheel is in an arc shape in the width direction, and a rim of the large wheel is straight in the width direction. Experimental working conditions and mechanisms of the device are closer to actual working conditions of a high-speed wheeltrack and an abrasion-fatigue damage mechanism, a more accurate and more reliable experimental basis is provided for design, manufacture and maintenance of anti-abrasion-fatigue of the high-speed wheel, and thus high-speed train operation safety and economy are improved.

Description

technical field [0001] The invention relates to an experimental device and an experimental method for railway wheel rail friction fatigue damage. Background technique [0002] Friction fatigue is the science of wear-fatigue damage and failure in systems of loaded friction pairs in machines and equipment. Due to the many factors affecting frictional fatigue, the contact interface is constantly undergoing dynamic changes due to friction, wear, geometric properties and material properties. As important components of high-speed trains, wheels and rails must transmit the force of the wheel-rail interface while bearing weight. Due to the complex system and strong nonlinear coupling effect of high-speed wheel-rail contact, the wheel-rail relationship operates under strong friction and multi-environmental coupling, and its operating conditions are very harsh. Therefore, the wheel-rail system is a complex friction fatigue component. With the rapid development of my country's high-s...

Claims

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Application Information

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IPC IPC(8): G01N3/56
CPCG01N3/56G01N2203/0073G01N2203/0062G01N2203/005G01N2203/0012
Inventor 王文健何成刚师陆冰朱文涛赵相吉刘启跃郭俊
Owner SOUTHWEST JIAOTONG UNIV
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