| 摘要 |
<P>PROBLEM TO BE SOLVED: To lessen power loss by reducing a load always burdened on a hydraulic pump when holding a suspended body. <P>SOLUTION: A hydraulic tag line device includes a hydraulic motor 2 driving a tag line drum, the hydraulic pump 1 supplying pressure oil to the hydraulic motor 2, an accumulator 3 supplying accumulated pressure oil to the hydraulic motor 2, and an unload relief valve 4. The hydraulic pump 1 is connected to a pressure port P of the unload relief valve 4, a tank 9 is connected to a tank port R of the unload relief valve 4, and one port of the hydraulic motor 2 is connected to an actuator port A of the unload relief valve 4. The accumulator 3 is connected between the one port of the hydraulic motor 2 and the actuator port A of the unload relief valve 4, and the other port of the hydraulic motor 2 is connected between the tank port R of the unload relief valve 4 and the tank 9. <P>COPYRIGHT: (C)2012,JPO&INPIT |
