PARKING BRAKE VALVE DEVICE Russian patent published in 2020 - IPC B60T13/40 

FIELD: machine building.

SUBSTANCE: invention relates to parking brake valve device (1) for control of parking brake (4) with spring accumulator in electrically-pneumatic braking system (2), wherein said electrically-pneumatic valve device (1) of parking brake has: inlet (1a) of compressed air for connection to supply (3) with compressed air, parking brake output (1b) to control parking brake (4) with spring accumulator, control output (1c) of trailer control to control trailer control valve (6) for trailer braking system (5), wherein this control output (1c) of the trailer control can be equipped with air for switching off the trailer braking system (5), area (15) of primary control of relay valve and controlled area (15) of primary control of relay valve, relay valve (14), which in its actuated position brings input (1a) of compressed air to output (1b) of parking brake, and in its not actuated position removes air from parking brake output (1b), TCV (17) primary control area (trailer control valve) to control trailer control output (1c), controlled by first and second electric control signal (S1, S2) of inlet and connecting valves (10) for air supply and disconnection of area (17) of primary control TCV and area (15) of primary control of relay valve, wherein by setting only inlet valve (10) and connecting valve (11), the following positions can be adjusted: the position of motion at the parking brake supplied air outlet (1b) and control output (1c) of the trailer control output air, parking position at removed air at outlet (1b) of parking brake and removed air at control output (1c) of trailer control, position of trailer control when air is removed at outlet (1b) of parking brake and equipped with air control output (1c) of trailer control.

EFFECT: technical result is low reliability of braking system high reliability.

14 cl, 3 dwg