Hydraulic drive device
AssigneeKobelco Construction Machinery Co., Ltd.
InventorsYuichiro FUJITA, Hiromitsu KOURA, Koji UEDA
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Abstract
A hydraulic driving system includes a pump, an actuator, and a controller. The pump is rotationally driven by a power source to discharge oil. The pump has a capacity which is changeable. The actuator is activated by a supply of the oil discharged from the pump. The controller controls the capacity of the pump in accordance with a manipulation content for the actuator. The controller changes, on the basis of a rotational speed of the pump, an upper limit value of a magnitude of a pump capacity change amount being a change amount of the capacity of the pump per unit time.
Claims5
A hydraulic driving system, comprising:
- a pump that is rotationally driven by a power source to discharge oil and has a capacity which is changeable;
- an actuator that is activated by a supply of the oil discharged from the pump;
- and
- a controller that controls the capacity of the pump in accordance with a manipulation content for the actuator, wherein
- the controller changes, on the basis of a rotational speed of the pump, an upper limit value of a magnitude of a pump capacity change amount being a change amount of the capacity of the pump per unit time.
Dependencies are inferred from the claim text.