RAILWAY VEHICLE BRAKE ELECTRIC AIR DISTRIBUTOR Russian patent published in 1999 - IPC

FIELD: railway transport; electric and pneumatic brakes; control of compressed air pressure in brake cylinders. SUBSTANCE: electric air distributor has two-pressure member, three-pressure member, pressure relay, braking electromagnetic valve, brake release electromagnetic valve and change-over device. Two-pressure and three-pressure members are coupled with main line. Three-pressure member is connected also with standby reservoir. Two-pressure member has housing, movable partition with plunger, main and control chambers. Plunger is provided with throttling channel and seal. Working space of two-pressure member is limited by seal and housing. Three-pressure member has movable partition with rod, movable partition, valve, working chamber, control chamber, braking chamber and atmospheric chamber. Braking electromagnetic valve has space with valve. Brake release electromagnetic valve has atmospheric space and space with valve. Electric air distributor has channel for communicating control chamber of two-pressure member with control chamber of pressure relay. EFFECT: prevention of spontaneous pneumatic release of train end car brakes when carrying out electric release of brakes, prevention of spontaneous release of brakes at pneumatic control, simplified design of electric air distributor. 1 dwg