CURRENT COLLECTOR OF ELECTRIC ROLLING STOCK Russian patent published in 1994 - IPC

FIELD: transport; electrical equipment. SUBSTANCE: current collector has pressure regulator, pole with contact unit, pneumatic drive, pole vibration pickup connected by its output with regulator adjusting member through pneumatic cylinder. Vibration pickup is made in form of inertia spool valve whose input is connected with compressed air supply source through pressure stabilizer. Inertia valve has spring-loaded spool installed for free oscillating relative to its balanced position. In case of pole vibrations spool provides delivery of air into pneumatic cylinder which acts, with high accuracy, onto regulator adjusting member, thus providing reliability of current collection. EFFECT: enhanced reliability of operation. 4 cl, 3 dwg