| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic circuit capable of reducing the fuel consumption during work by avoiding an overload state. SOLUTION: An overload preventive circuit comprises a pressure sensor to detect the discharge pressure of a pump, a controller which connects the output of the pressure sensor to the input side, and outputs the control signal to control the input torque of a regulator from the output side, and a hydraulic circuit to connect the output of the controller to the regulator. The controller controls the input torque to be reduced to a predetermined low torque when the discharge pressure of the pump is increased at a predetermined rate, and controls the input torque to be increased along the predetermined pattern thereafter. COPYRIGHT: (C)2005,JPO&NCIPI
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