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Railway vehicle body vibration fatigue monitoring system and method

A vibration fatigue and rail vehicle technology, applied in the field of rail vehicles, can solve the problems of monitoring vehicle body vibration fatigue, etc., and achieve the effect of simple hardware composition, stable transmission mode, and accurate data collection

Pending Publication Date: 2020-05-08
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of monitoring car body vibration fatigue, and propose a rail vehicle car body vibration fatigue monitoring system and method

Method used

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  • Railway vehicle body vibration fatigue monitoring system and method
  • Railway vehicle body vibration fatigue monitoring system and method
  • Railway vehicle body vibration fatigue monitoring system and method

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Embodiment Construction

[0049] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0050] Such as figure 1 As shown, the present invention provides a rail vehicle body vibration fatigue monitoring system, including on-board equipment 1, off-board equipment 2 and user terminal 3;

[0051] In the embodiment of the present invention, such as figure 1 As shown, the on-vehicle device 1 includes a first communication sub-device 4, a second communication sub-device 5 and a third communication sub-device 6; the off-vehicle device 2 includes a first off-vehicle sub-device 7, a second off-vehicle sub-device 8 and a third Off-vehicle sub-device 9; first communication sub-device 4 and first off-vehicle sub-device 7 are connected in communication; second communication sub-device 5 and second off-vehicle sub-device 8 are connected in communication; third communication sub-device 6 and third off-vehicle sub-device 9 Communication connection; the fi...

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Abstract

The invention discloses a rail vehicle body vibration fatigue monitoring system and a method. The rail vehicle body vibration fatigue monitoring system comprises on-vehicle equipment, off-vehicle equipment and a user terminal. The on-vehicle device is in communication connection with the off-vehicle device and the user terminal. The system provided by the invention needs few sensor measuring points, and is simple in equipment hardware composition, small in size and convenient to carry. And the system can also feed back the real-time situation to the user, so that the user is guided to focus ondesign and maintenance. According to the method, the power spectral density is adopted as calculation input, the calculation speed is high, and the collection period of the under-vehicle equipment can be greatly shortened. Meanwhile, the fatigue weak part of the vehicle body provided by the method can provide an important basis for vehicle body structure design, so that workers are guided to payattention to a vehicle body maintenance area during maintenance; the sensitive frequency provided by the method can guide the design of a vehicle suspension system; and the real-time change of the fatigue damage value of the vehicle body is also one of guidance bases for workers to perform line maintenance and vehicle body maintenance period adjustment.

Description

technical field [0001] The invention belongs to the technical field of rail vehicles, and in particular relates to a rail vehicle body vibration fatigue monitoring system and method. Background technique [0002] With the rapid development of rail vehicles, the operating environment of the vehicles is complex and changeable, and the reliability of the vehicle structure becomes particularly important. As an important part of the rail vehicle structure, the reliability of the car body is related to the safety of operation. [0003] The fatigue damage of car body can be divided into static fatigue damage and vibration fatigue damage. Static fatigue damage rarely occurs in rail vehicle bodies, because the structure has adopted relevant standards or simulation methods for static fatigue strength evaluation in the design stage to ensure that the structure meets the design life. However, vibration fatigue is completely different from static fatigue, and vibration fatigue is much ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/08
CPCG01M17/08
Inventor 杨晨池茂儒刘开成周亚波
Owner SOUTHWEST JIAOTONG UNIV
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