| At present,due to the high security,high speed of metro traffic,short delay and frequency of many advantages,therefore,more and more get the favour of large and medium-sized cities population,and also gradually become the preferred form of transport.In the modern urban subway transportation system,the state of subway vehicles is crucial to the operation of the subway transportation system.Metro vehicle as soon as possible after any failure,will directly affect the normal operation of the metro transportation system,disturb the order of urban public traffic,affect passengers’ travel arrangement,and will cause serious social impact.Thus,we takethe metro vehicle state of "Y Metro Group Co.,Ltd." as the research object and analyzethe present situation of Y company’s metro vehicle comprehensively in order tolearn about the problems of metro vehicle maintenance based on the present situation of metro vehicle maintenance and related data.Then we set up the maintenance management system and method of metro vehicle after referring to the existed scientific methods and put forward a feasible strategy of metro vehicle maintenance system.Firstly,we illustrate the research background,significance,literature review both at home and abroad and the structure arrangement of Y company’s metro maintenance strategy,which can provide aperfect background analysis for the following study.On the basis of the main contents of the paper,we analyze the relevant methods and theories used in the research process including malfunction analysis,metro vehicle maintenance strategy and optimization management method.Secondly,we analyze the current situation and problems of metro vehicle maintenance of Y company,and the profile of Y company and the current situation of metro vehicle maintenance can be deemed as a key point.Then we analyze some problems such asimperfect maintenance system,unscientific maintenance cycle,backward maintenance level,one-sided maintenance analysis andunreasonable maintenance plan based on the maintenance state.After that,we discuss the statistical analysis situation of metro vehicle malfunction totally,then discuss that of every system,finally discuss the influence of metro vehicle malfunction on the maintenance.At last,we put forward the method of strategy optimization,discuss the purpose,method and construction process of metro vehicle maintenance strategy optimization,and finally discuss the implementation of metro vehicle maintenance strategy optimization.The analysis and summary of the metro vehicle malfunction information can make the maintenance staff have certain predictability to metro vehicle malfunction,and formulate reasonable precautions,in order to ensure the safety,stability and economyduring the operation of the metro vehicle.On one hand,it can bring great social and economic benefits to Shenyang if we could makepublic transportation normal and stable.On the other hand,a scientific maintenance and optimization strategy can effectively reduce the cost of manpower,material and capital of Y company.Meanwhile,the optimization strategy can provide some theoretical reference for the peer enterprises.Therefore,the research has great value both practically and theoretically. |