Railway switch locking device

摘要

The device has a fixed part (PF) secured to a stock rail, and a movable part movable with respect to the fixed part. The movable part is fixed on a switch point rail. The movable part allows application and locking of the switch point rail on the stock rail by using a metal locking arm. The fixed part includes a bolt (7) with a socketed screw in which a bronze piston slides. The piston is actuated by the switch point rail to control a controller of the device. The screw comprises a threaded rod (71) and a hammer head (72) that is distinct from the threaded rod and secured to the threaded rod.