| 摘要 |
<p>PROBLEM TO BE SOLVED: To give an operator a constant feeling of operation, regardless of a size of moment of inertia of a revolving body with respect to an axis of rotation of the revolving body, during the revolution/acceleration of a hydraulic work machine. SOLUTION: Moment of inertia I of a revolving body with respect to the axis of rotation is detected by moment of inertia detecting means 7B, 7B, etc., while the pressure P of pressure oil, which is supplied from a flow control valve 5A to an actuator 3A of the revolving body, is detected by pressure detecting means 7A, 7A. On the other hand, a maximum pressure setting means 8 sets the maximum pressure Ps for the pressure oil to be supplied to the actuator 3A for the revolving body, according to the size of the moment of inertia I. In this case, if pressure P detected at present becomes higher than the maximum pressure Ps that was set in accordance with the size of the moment of inertia I, flow controlling means 8, 16A control the flow rate of the pressure oil, which is supplied to the actuator 3A for the revolving body, so that the flow rate of the pressure oil, which is supplied from the flow control valve 5A to the actuator 3A of the revolving body, becomes lower than the pressure Ps .</p> |
