PASSENGER CAR AUTOMATIC PARKING BRAKE (VERSIONS) Russian patent published in 2007 - IPC B61H11/02 

FIELD: railway transport.

SUBSTANCE: invention relates to combinations of automatic brakes of different type vehicles. Proposed automatic parking brake has housing of brake cylinder with guide, unit and lock of parking brake, accumulating spring, air distributor (according to first design version). Lock is made in form of spring loaded rod-piston installed in unit and forming rod space with the unit. Rod space communicates with brake main line through charge-discharge channel which includes check valve with calibrated hole and additional reservoir arranged before unit. Unit is installed on brake cylinder housing. Rod of brake cylinder is furnished with stop. At discharge of brake main line, spring-loaded rod-piston can into power contact by its end face with said stop. According to second design version, variable volume pneumatic reservoir made of flexible hermetic material is placed into rod space of unit installed on brake cylinder housing.

EFFECT: automatic change over of emergency braking mode into parking mode after stopping of vehicle and provision of release of car parking brake at connection to brake main line of locomotive.

4 cl, 5 dwg