Hydraulic system, driving apparatus for construction machine has control blocks fed, via a pump each, and are each operative to drive a number of hydraulically operated actuators of the construction machine

摘要

The apparatus has a number control blocks (1a-1d) which are fed, via at least one pump (2a-2d) each and are each operative to drive a number of hydraulically operated actuators of the construction machine. At least two of the blocks are designed to drive a common actuator. A delaying time relay connects the delivery capacity of the pump of a second of the two control blocks to the common actuator after a delay. The time relay connects the pump of the second control block after expiration of a fixed predefinable time period and has a sensor element which registers actuator speed and outputs corresponding data to an electronic processor which connects the pump of the second control block when a final speed of the actuator is reached. An Independent claim is included for a method of driving a hydraulic system of a construction machine.