RAILWAY VEHICLE BRAKE Russian patent published in 2014 - IPC B61H1/00 B60T17/08 B61H13/20 B60T13/26 

FIELD: transport.

SUBSTANCE: railway vehicle brake includes brake line connected via air manifold with spare reservoir and main brake cylinder with piston the rod of which is connected using double-armed lever with brake shoe control linkage, as well as with additional cylinder gimbal-mounted on bogie. The piston rod of additional cylinder at its one end is gimbal-mounted on double-armed lever of brake cylinder, and at its other end (in parking brake actuation mode only) is connected with piston via nipple and threaded bushing connected via splined and rotary bushing with stopper. Additional cylinder is connected to spare reservoir using pipeline via activation valve. The activation valve provides air supply to additional cylinder during parking braking only by means of turning a key located on car board. If parking braking is not switched on then rod nipple is not connected with threaded bushing.

EFFECT: higher brake reliability and eliminating possibility of unauthorised actuation of braking system during train movement.

2 dwg