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RAMS 통계분석을 활용한 도시철도 전동차 출입문 부품 고장분석 및 개선에 관한 연구
The entrance and exit system of the city rail system is a device that handles the entry·exit of passengers. However, it is an important device affecting the operation of the city railroads since failure in the event of failure directly affects the safety of the passengers The type of belt-type door system was analyzed using the analysis of the RAMS integrated system statistics that are set up in Busan Metropolitan Railway for improved passenger service and safe operation of the city railroads. As a countermeasure to improve it, First, developing and applying the door belt pulley bearing and upper roller replacement equipment reduced the annual average failure rate of the belt pulley, the bearing, and the upper roller by 56.7 percent. Second, the development and application of the door operated testing machine reduced the annual average failure rate of the door belt pulley bearings and upper rollers by 91.7 percent by recognizing bearing defects and bad assembly conditions before the motor vehicle was shipped. The results are verified by statistical analysis of the RAMS integrated system.