INTERMEDIATE SECTION POWER SOURCE SWITCHING SYSTEM OF AC ELECTRIC RAILWAY

PROBLEM TO BE SOLVED: To simplify a control mechanism of an intermediate section power source switching system of an AC electric railway.SOLUTION: The intermediate section power source switching system of the AC electric railway comprises an opening-closing control device 7 provided between feeders connected with an AC power source of a mutually different phase of two transformer stations and controlling cutoff-supply of switches 5a and 5b for executing switching operation of an intermediate section. The opening-closing control device 7 comprises a switching member 8 journaled to a rotary shaft 8a. A movable electrode shaft 11a of the switch 5a is connected to one end of the switching member 8, and a movable electrode shaft 11b of the switch 5b is connected to the other end. A driving force transmission member 10 is provided between the rotary shaft 8a of the switching member 8 and a connection part of the movable electrode shaft 11a of the switch 5a. A roller 13 is provided in an end part of the driving force transmission member 10, and a triangular cam 9 is rotatably provided for rotating in a state of abutting on the roller 13.