| 摘要 |
<p>Provided is a hydraulic control device for a work machine with which power controllability can be adequately improved while ensuring the speed controllability of a hydraulic actuator with respect to an operation input from an operation device. The present invention is equipped with: target drive pressure calculation units (26A, 26B), which calculate target values for the drive pressure of hydraulic actuators (3a, 4a) on the basis of the speed detected by speed detection units (18A, 18B) and target values calculated by target speed calculation units (25A1, 25B1); and a target discharge amount calculation unit (30), which calculates a target value for the discharge amount of a hydraulic pump (12) in accordance with the discharge pressure detected by a discharge pressure sensor (17) and the target values calculated by the target drive pressure calculation units (26A, 26B). Inflow control units (19A, 19B) control the pressure of operating oil supplied to the hydraulic actuators (3a, 4a) in accordance with the target values calculated by the target drive pressure calculation units (26A, 26B), and a controller (20) controls the discharge amount of the hydraulic pump (12) so as to achieve the target value calculated by the target discharge amount calculation unit (30).</p> |
