Hydraulic variable booster system for heavy equipment operation

摘要

The present invention relates to a system for increasing the operating oil pressure of a heavy equipment, in which a main variable relief valve (8) is connected to a control valve block (2) for distributing and supplying the hydraulic oil discharged from the hydraulic pump (1) And variable-type actuator relief valves 11a, 12a, and 13a are installed in spools 11, 12, and 13 for controlling the flow of pressure oil supplied to the actuators 3, The main variable relief valve 8 and the variable actuator relief valves 11a, 12a and 13a are controlled by the electron proportional control valve 22 so that the supplied pilot pressure is supplied to the control valves 18 19, 20), and the operation is controlled by the mode controller 23, in which the control valves 18, 19, 20 are electrically controlled, so that the operating pressure of the actuator is variably controlled So that the efficiency of the equipment can be maximized.