Work machine

Abstract

A work machine is provided with a first hydraulic actuator that uses a plurality of hydraulic pumps as hydraulic fluid sources; a plurality of pump combiner valves that controls each supply flow rate of hydraulic fluid from the plurality of hydraulic pumps to the first hydraulic actuator; a second hydraulic actuator that shares a hydraulic fluid source with the first hydraulic actuator; and a controller that controls the plurality of pump combiner valves, and the controller stores priority pump data defining a priority pump corresponding to the first hydraulic actuator for each operation load pattern, specifies the priority pump on the basis of the priority pump data according to the operation load pattern at the time when the first operation device is operated to control the plurality of pump combiner valves, and learns and updates the priority pump data from operation signals of the first and second operation devices and the load pressure of the first hydraulic actuator. Accordingly, it is possible to decide an appropriate priority pump every time for each hydraulic actuator in various situations without depending on the judgment by an operator.