Hydraulic control arrangement for e.g. backhoe loader, has demand feed regulator loaded with highest load pressure of one of hydraulic consumers during actuation of one of load independent flow distribution control valves

摘要

The arrangement has load independent flow distribution- directional control valves (12) for activating two hydraulic consumers, respectively. Demand feed regulators (45, 46) are attached to hydraulic pumps (30, 31), and load indication lines (25, 26) lead to the regulators (46) for indicating highest load pressures of the hydraulic consumers. The regulator (46) is loaded with the highest load pressure of one of the hydraulic consumer during actuation of one of the control valves. The pumps supply pressure medium into inflow lines (23), which lead to the valves.