APPLICATION OF SYSTEM ANALYSIS FOR PROVIDING RELIABILITY OF ELECTRICAL MACHINES IN DIAMOND INDUSTRY

Abstract

The relevance. Recently, the diamond mining industry has included a trend of mining using the mining method. In this regard, the drive based on DC motor and AC motor has become widespread. Unplanned shutdowns of mining machinery lead to economic recession and additional costs for repairs. Unplanned break of tunneling equipment leads to industrial disasters and jeopardize the safety of personnel. Therefore there is an urgent problem of providing adequate level reliability of mining machinery amongst other problems of diamond industry. Early diagnostics, repair using modern technologies and constant improvement of maintenance minimize downtime and eliminate sudden failure. Application of system analysis in reliability of electrical machines does not get necessary development. Paired comparisons applied in the system analysis allow analyzing the criteria reluctant to quantitative evaluation. The main aim of the research is to determine the most effective ways to solve the problem of ensuring the proper level of operational reliability of electric machines of the cutting body of the AM-75 roadheader in the diamond industry by analyzing hierarchies. Object of research is the electric drive of the cutting body of the AM-75 tunnel miner, operated under conditions of the diamond-mining complex. Methods: system analysis, hierarchy method, expert evaluation method. Results. Using the hierarchy analysis method the authors have determined the criterion which affects most of all the reliability of electrical machines of cutting unit of road header AM-75. The paper introduces in hierarchy the objective tree for the problem of providing reliability for electrical machines of road header.

Keywords

• system analysis
• hierarchy analysis method
• goal tree
• roadheader
• electrical machines
• operational reliability
• diamond industry