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Equipment reliability evaluation and maintenance method

A reliability and equipment technology, applied in the field of equipment reliability evaluation and maintenance, can solve the problems of excessive equipment maintenance, maintenance cycle without considering equipment operation status, insufficient equipment maintenance, etc., to avoid excessive maintenance, reduce blindness, and avoid maintenance. insufficient effect

Pending Publication Date: 2022-01-14
CASCO SIGNAL
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The maintenance cycle of this model does not take into account the current operating status of the equipment, so it may lead to overhauling of equipment that is in good condition and undermaintenance of equipment that is in poor condition

Method used

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  • Equipment reliability evaluation and maintenance method
  • Equipment reliability evaluation and maintenance method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Embodiment 1, taking a single switch machine as an example, the reliability evaluation and maintenance method for a single switch machine includes the following steps:

[0067] 1. According to the characteristics of each component of the switch machine, determine the replacement cycle RC and the minimum reliability tolerance R min , the opportunity maintenance time threshold T O ;

[0068] 2. Online monitoring of various electrical signals of the switch machine, and storing the monitoring values ​​to the data server;

[0069] 3. Compare the monitoring data with the normal range value, and generate corresponding alarm and early warning information for the abnormal state;

[0070] 4. Make statistics on the failure time of each component of the switch machine (in days), and use the least square method of Weibull parameter estimation to solve Then the fault distribution model of the switch machine components is obtained

[0071] 5. Carry out as figure 1 In the opera...

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Abstract

The invention discloses an equipment reliability evaluation and maintenance method, which comprises the following steps of: traversing all parts in all subway equipment, replacing the parts of which the reliability is less than the lowest reliability tolerance and which reach a replacement cycle, maintaining the parts which do not reach the replacement cycle, updating and calculating the maintenance reliability of the parts with the reliability greater than or equal to the lowest reliability tolerance, and maintaining the parts with the maintenance reliability less than the lowest reliability tolerance. According to the method, the maintenance blindness of the subway equipment is reduced, insufficient maintenance and excessive maintenance are avoided as much as possible, hidden dangers of the subway equipment can be found in time, and the reliability of the equipment is improved.

Description

technical field [0001] The invention relates to an equipment reliability evaluation and maintenance method applied to subway operation and maintenance state maintenance. Background technique [0002] With the development of urban rail transit, the related equipment has multiplied, and the traditional maintenance mode has been difficult to solve the contradiction between maintenance quality and maintenance cost. The maintenance mode of subway equipment can be roughly divided into three stages: fault maintenance, periodic maintenance, and condition maintenance. [0003] Troubleshooting is an after-the-fact maintenance strategy, that is, to repair the equipment after a functional failure has occurred. This method has high maintenance costs and seriously threatens the safe operation of the subway, and does not meet the high reliability requirements of the subway operation for equipment. Periodic maintenance is a kind of preventive maintenance. Its strategy is to carry out perio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/10G06F119/02G06F119/04
CPCG06F30/20G06F17/10G06F2119/02G06F2119/04
Inventor 王宇迪张兵建范东明黄蒙涛王亮张启万赵金婵
Owner CASCO SIGNAL
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