COMBINED CYLINDER OF WORK BRAKING MECHANISM AND BRAKING MECHANISM WITH SPRING-TYPE POWER ACCUMULATOR INCORPORATING INTERNAL VENTILATION Russian patent published in 2010 - IPC B60T17/08 B60T13/38 F16D65/32 

FIELD: transport.

SUBSTANCE: invention relates to machine building, particularly to combined cylinders of work braking mechanism and braking mechanism with spring-type power accumulation. Proposed combined cylinder comprises membrane, chamber of work braking mechanism, chamber receiving return spring, spring-type power accumulator, piston of braking mechanism with spring-type power accumulator to restrict, on one side, the chamber of braking mechanism with spring-type power accumulator and, one the other side, spring chamber receiving spring-type power accumulator. Braking mechanism piston has piston rod accommodating air release valve to produce or prohibit flow passage between spring-type chamber and chamber of work braking mechanism. Air release valve has bearing case and piston arranged inside the cylinder to displace axially therein. First pressure spring resting upon piston loads valve body towards valve first seat on the piston. Second pressure spring resting upon piston rod loads the piston to force valve body towards second seat and out from first valve seat. Piston first surface is loaded by pressure in spring chamber in direction out from valve second seat, while second surface is loaded by pressure in spring chamber in direction towards second valve seat and out from first valve seat. Valve body forced from first valve seat and/or second valve seat provides for flow passage between chamber of work braking mechanism and spring chamber.

EFFECT: reduced noise in operation.

5 cl, 4 dwg