Patent ID: 6644025
Filing Date: 2003-11-11
Classification: F15B

Abstract:
A control arrangement for supplying pressure medium to at least two hydraulic consumers (14, 15, 16) comprisinga variable-displacement pump (10) which is controlled according to required flow and a setting of which is variable as a function of highest load pressure of actuated said hydraulic consumers (14, 15, 16), by a pump controller (11), two displaceable meter-in variable restrictors (17, 18, 19); a first of which is arranged between a feed line (13), which leads from the variable-displacement pump (10), and a first hydraulic consumer (14, 15, 16), and a second of which is arranged between the feed line (13) and a second hydraulic consumer (14, 15, 16), and two pressure compensators (23, 24, 25), a first of which is connected downstream of the first meter-in variable restrictor (17, 18, 19), and a second of which is connected downstream of the second meter-in variable restrictor (17, 18, 19), and a control piston of which is actable on in an opening direction, on a front side, by pressure downstream of the associated meter-in variable restrictor (17, 18, 19), and wherein the control pistons of the pressure compensators (23, 24, 25) are actable on in a closing direction by a control pressure which is present in a rear control space (26), is derived from feed pressure prevailing in the feed line (13) with a valve device (45, 52) and changes with the feed pressure.