ELECTROPNEUMATIC BRAKE DEVICE COMPRISING A PRESSURE-REGULATING MODULE CONNECTED TO TWO COMPRESSED-AIR SUPPLIES BY MEANS OF TWO CHECK VALVES

摘要

The invention relates to an electropneumatic brake device (1) comprising a first electropneumatic pressure-regulating module (6) with a first relay valve device (22a) and a first inlet/outlet solenoid valve combination (16a) which pneumatically controls the first relay valve device (22a), in addition to a supply connection (14a) which is connected to a first supply inlet (52a) of the first relay valve device (22a) and an inlet valve (18a) of the inlet/outlet solenoid valve combination (16a), the first supply connection (14a) of the first pressure-regulating module (6) being connected to at least one of two independent compressed-air supplies (40, 46), a first compressed-air supply (40) and a third compressed-air supply (46). According to the invention, the first supply connection (14a) is connected to the first compressed-air supply (40) by means of at least one first check valve (42) and to the third compressed-air supply (46) by means of at least one second check valve (48), wherein the check valves (42, 48) each comprise at least one valve-closing member (58) which is pressed against a valve seat (56) by means of spring forces of at least one spring element (54) and, in the forward direction, when the valve-closing member (58) is lifted off the valve seat (56), the check valves allow a compressed-air flow from each of the compressed-air supplies (40, 46) or even from both compressed-air supplies (40, 46) at the same time into the first supply connection (14a), but in the reverse direction, when the valve-closing member (58) is pressed against the valve seat (56), the check valves prevent a compressed-air flow from the first supply connection (14a) into one of the two compressed-air supplies (40, 46) or into both compressed-air supplies (40, 46), and a compressed-air flow from the first compressed-air supply (40) into the third compressed-air supply (46) or from the third compressed-air supply (46) into the first compressed-air supply (40).