Control device of hydraulic construction machine

摘要

Provided is a control device for a hydraulic construction machine in which a predetermined finishing accuracy is obtained even when an excavation load increases in a horizontal leveling operation or a surface shaping operation. A hydraulic actuator, a work machine driven by the hydraulic actuator, a hydraulic pump, a pump flow controller for controlling the discharge flow rate of the hydraulic pump, a pump horsepower controller for controlling the horsepower of the hydraulic pump, a construction target surface on which the work machine works, In the control apparatus of the hydraulic construction machine provided with the target surface distance acquisition part which measures or computes the target surface distance which is the distance of a work machine, As the target surface distance becomes short, a pump flow control part performs control which makes discharge flow volume small, and a pump The horsepower control unit controls to increase the horsepower of the hydraulic pump.