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Method for comprehensively evaluating maintainability of rocker arm systems of coal mining machines

A comprehensive evaluation and maintainability technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of immature comprehensive evaluation of the maintainability of the rocker arm system of coal shearers, and achieve a scientific and comprehensive maintainability level. Accurate and reasonable effect of maintainability evaluation

Active Publication Date: 2017-09-15
CHINA UNIV OF MINING & TECH
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Problems solved by technology

The existing maintainability models mainly determine the maintenance status of small and simple systems, but the comprehensive evaluation of the maintainability of large and complex shearer rocker arm systems integrating machinery, electricity, and hydraulics is still immature

Method used

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  • Method for comprehensively evaluating maintainability of rocker arm systems of coal mining machines
  • Method for comprehensively evaluating maintainability of rocker arm systems of coal mining machines
  • Method for comprehensively evaluating maintainability of rocker arm systems of coal mining machines

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Embodiment approach

[0112] Based on the maintenance status of the shearer rocker arm system, the optimal design plan can be determined and measures to improve the maintainability of the shearer rocker arm system can be proposed. The implementation method is as follows:

[0113] For several different design schemes, the system-level maintainability index can be calculated according to the above method to determine the optimal scheme, and the weak links of each scheme can be analyzed and reasonable improvement measures can be proposed.

[0114] When calculating the maintainability index of each sub-system, let the membership degree of a certain certain index of a certain system for the highest comment be 1 or take a certain quantitative data as the maximum value x max , Cause the change of the maintainability index of the rocker arm system. The greater the change, the more the index of this sub-system can be improved, the better the maintainability of the rocker arm system of the shearer is. That is, this...

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Abstract

The invention discloses a method for comprehensively evaluating maintainability of rocker arm systems of coal mining machines. The method is implemented on the basis of a triangular fuzzy number analytic hierarchy process (TFAHP) and a fuzzy synthetic evaluation model. The method comprises the following steps of firstly, establishing a coal mining machine rocker arm system maintainability analytic hierarchy model and calculating a maintainability weight of each subsystem by utilizing the TFAHP; secondly, normalizing a maintainability quantitative index and quantitative data of each subsystem to obtain a maintainability effectiveness value; processing the quantitative indexes by adoption of the fuzzy synthetic evaluation model and processing the quantitative data by adoption of a linear mathematic model; calculating a maintainability index of each subsystem; and finally synthesizing the maintainability weight and maintainability index of each subsystem to carry out calculation so as to obtain a maintainability index of a rocker arm system of a coal mining machine. According to the system-level maintainability index, an optimum scheme in different design schemes can be determined, and weak links in the design schemes can be analyzed to propose effective improvement measures.

Description

Technical field [0001] The invention relates to the technical field of maintainability of coal mining machinery and equipment, and mainly relates to a comprehensive evaluation method for the maintainability of a coal shearer rocker arm system. Background technique [0002] As the basic attribute of equipment, maintainability reflects its ability to maintain fast, convenient and economical. As the main part of the shearer, the rocker arm system of the shearer is also a part of frequent failures. The quality of its maintenance is directly related to the working efficiency of the entire shearer. During the operation of the shearer, due to the special working environment and changeable working conditions, it is necessary to grasp the maintenance status of the entire rocker arm system in order to implement maintenance in a timely and efficient manner and reduce equipment maintenance costs. The existing maintainability models mainly determine the maintenance status of small and simple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/00
CPCG06Q10/20G06F30/17G06F30/20
Inventor 程刚陈相丞李勇刘畅杨金勇杨建华
Owner CHINA UNIV OF MINING & TECH