SINGLE-LOAD HYDRAULIC SYSTEM AND MACHINE Russian patent published in 2019 - IPC F15B11/17 

FIELD: machine building.

SUBSTANCE: invention relates to hydraulic system (10) for a machine that includes hydraulic steering system (11), working hydraulic system (12), variable pump (14) for supplying hydraulic fluid to the hydraulic steering system and metering pump (16) for supplying hydraulic fluid to the working hydraulic system. Said variable pump is in selective hydraulic communication with the hydraulic steering system and working hydraulic system via priority valve (13). According to the invention, the priority valve has LS port (133) for receiving a load feedback pressure signal (LS) from the hydraulic steering system when the hydraulic steering system is in operation, wherein the priority valve is designed so that the hydraulic fluid pumped by means of a variable pump is preferably supplied to the hydraulic steering system when the hydraulic steering system is in operation.

EFFECT: technical result is increased reliability of the hydraulic system.

5 cl, 3 dwg