| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a control device of a hydraulic motor which keeps the hydraulic motor so as not to exceed the highest operation pressure without making the motor exhibit a relief function when the hydraulic motor exceeds the highest operation pressure, stabilizes the operation of the hydraulic motor, and suppresses a wasteful energy loss to the minimum.SOLUTION: Pressure sensors 29a, 29b are arranged at respective input/output ports 23a, 23b of a hydraulic motor 23, higher pressure out of the input/output ports 23a, 23b is detected, when the higher pressure exceeds the highest operation pressure, a slewing speed is detected by a gyro sensor, a necessary amount Qm=ν×V×(60/360 10) of a slewing motor 23 is operated by a controller 30, a pump regulator 21 of a variable displacement hydraulic pump 20 is driven, and a necessary amount of pressure oil is supplied to the slewing motor 23.</p> |
