Rotation control device for working machine
AssigneeKobelco Construction Machinery Co., Ltd.
InventorsMasayuki KAGOSHIMA, Masayuki KOMIYAMA
Life of this patent
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Abstract
In a rotation control device for rotating a rotation motor at speed in accordance with a boom raising operation amount, at the time of a combined operation for simultaneously performing a rotation action and a boom raising action, a limitation value of rotation torque in accordance with the boom raising operation amount is determined by rotation torque limitation value setting means of a controller, the limitation value serving as a rotation torque limitation value is sent to rotation speed control means, and a command value of the rotation torque is torque-limited by rotation torque limiting means.
Claims4
A rotation control device for working machine, comprising:
- a rotation body;
- a rotation motor for rotating and driving said rotation body;
- a hydraulic actuator driven by pressure oil from a hydraulic pump;
- rotation operation means for sending a rotation signal to said rotation motor;
- hydraulic actuator operation means for sending an action signal to said hydraulic actuator;
- rotation operation amount detecting means for detecting a rotation operation amount which is an operation amount of said rotation operation means;
- hydraulic actuator operation amount detecting means for detecting a hydraulic actuator operation amount which is an operation amount of said hydraulic actuator operation means;
- and
- control means for controlling said rotation motor on the basis of the signals from both said operation amount detecting means, the control means being adapted:
- (A) to control said rotation motor at speed in accordance with the rotation operation amount, and
- (B) to torque-control said rotation motor in the direction of slowing down acceleration of the rotation in accordance with an increase in the hydraulic actuator operation amount at the time of a combined operation for simultaneously performing a rotation action and a hydraulic action by said hydraulic actuator.
Dependencies are inferred from the claim text.