압상량 증대를 위한 전차선로 가동브래킷 개발

A steady arm that applies stagger to a contact wire and a hinged bracket that suspends a contact wire are essential components that give direct influence to overhead line characteristics. This paper presents the development of a hinged bracket including a steady arm and stem insulator which ensure a maximum uplift of 200㎜ for speed enhancement at conventional lines. The developed steady arm was designed considering interference with a pantograph by suiting dynamic gauge when contact wire uplift is 200㎜ proposed by UIC and weight was reduced by redesigning clamps for contact wires and pipe size. The developed and assembled hinged bracket, steady arm, and stem insulator were tested following specifications proposed by Korea Railway Standard and stability was confirmed by passing the stated conditions.