FIELD: transport.
SUBSTANCE: invention relates to transport, particularly, to vehicle parking brakes. Proposed parking brake contains partially made bistable valving to feed control pressure for regulation of one parking brake function, and acceleration valve. The acceleration valve is designed for acceptance of valving control pressure and feeding air to braking cylinder with spring energy accumulator or releasing air from it, depending on control pressure. The first module contains connection with trailer control line with possibility of control by means of solenoid valve to implement test function of trailer parking brake. The valving is integrated into the first module built in compressed air preparation unit. The acceleration valve is installed in the second module located at some distance from the first module and compressed air preparation unit. The solenoid valve is made capable to be controlled by means of pulse-width modulation to prepare function of antitripping-over braking device in connection with trailer control line.
EFFECT: decrease in labour consumption required during repair when failure occurs.
3 cl, 3 dwg
