CONTROL SYSTEM FOR A HYDRAULIC WORK MACHINE

摘要

Disclosed is a control system for a hydraulic work machine, comprising a plurality of hydraulic work circuits for supplying actuators and/or drive units of movable machine parts with hydraulic fluid, and an emergency stop circuit for the work circuits for avoiding danger caused by the machine parts. According to this disclosure, the emergency stop circuit comprises a single safety valve which is connected in parallel to the work circuits via at least one branch line each at the inlet and to a pressure relief point at the outlet.

主权项

1. A control system for a hydraulic work machine, comprising:
a plurality of hydraulic operating circuits that are controllable to supply pressure oil to actuation members and/or drive units of movable machine components; emergency stop circuitry for the operating circuits which can be activated to stop a machine movement to prevent danger resulting from the machine components; each hydraulic operating circuit containing a hydraulic pressure source configured to supply pressure oil to the actuation members and/or drive units of movable machine components; and the emergency stop circuitry having a single safety valve, an inlet of the single safety valve being connected in parallel to each operating circuit by a respective branch line, an outlet of the single safety valve being connected to a pressure relief point.