延长日检周期的评估方法及应用
打开文本图片集
中图分类号：U279 文献标志码：B doi：10.20214/j.cnki. zhgdjt.2025. 02.010
Evaluation Method for Extension ofDaily Maintenance Interval and its Application
YANG Junyi1，LIULulu²，YU Hongbin² （1.Operation Branch of Shijiazhuang Rail Transit Group Co.，Ltd.，Shijiazhuang O5oo36，China; 2.CRRC Qingdao Sifang Rolling Stock Research Institute Co.，Ltd.，Qingdao ，China）
Abstract：Extending the daily maintenance interval is one of the keys to optimize the maintenance mode of urban rail transit.To give a scientific and reasonable support to the extension of daily maintenance interval， thefeasibilityof extending thedaily maintenance interval isanalyzed theoretically，which is crucialforjudging whether the conditions of implementing the multi-day maintenance are met and whether the vehicles are safe and reliableduring the multi-day maintenance.Byanalyzing the characteristics of thedaily maintenance items and combining the fault data and component reliability data during the train operation，the article proposes a both qualitative and quantitative method foranalyzing the feasibility of extension and comprehensively evaluates the extension of daily maintenance on considering the service condition of the intelligent operation and maintenance equipment.Through analysis and evaluationof the feasibilityof extension，the risk grade and the acceptable maximum maintenance intervalof daily maintenance items can be obtained，and combined with the covering effect of the intellgent inspection equipment，the feasibilityof extending thedaily maintenance can be judged comprehensively. The analysis of extending the one-day maintenance to the 8-day maintenance on a metro line in Shijiazhuang shows that this evaluation method allows to effectively evaluate the feasibility of extendig the daily maintenance interval and further realize the trial implementation of the multi-day maintenance mode with security measures so as to reduce the workload of daily maintenance and improve the efficiency of train maintenance and the availability of vehicles.
Key words：urban rail transit；extension of daily maintenance；evaluation method；reliability analysis; elligent maintenance
城市地铁规模的网络化发展导致车辆维保压力急剧增大，但同时也极大地促进了城市轨道交通对精益化维保的探索。（剩余6992字）
