Railroad switch machine

Details Railroad switch machine Railroad switch machine

E - Fixed Constructions

01

B

346/77

E01B 7/00 (2006.01) B61L 5/04 (2006.01)

Patent

CA 1176743

ABSTRACT OF THE DISCLOSURE A high-speed switch machine for actuating railroad switch points. The machine has an electric motor which drives a hydraulic pump. The pump supplies pressure fluid to a hydraulic cylinder adapted to move the switch points from an initial to a second limit position. A four-way, two-position hydraulic control valve directs fluid to the cylinder such that the cylin- der automatically operates in an extension and retraction cycle. The uni-directional motor and two-position control valve mini- mize response times of the actuating components so that the switch points are thrown in a short time period.

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