| 摘要 |
Hydraulic system for operation of a winch, including a hydraulic motor for operation of the winch, a pump for pumping hydraulic oil for operation of the motor, a manoeuvering valve for control of the speed of the motor and rotational direction, a first choke valve which is connected in series with the pump, and a second choke valve which is connected in parallel with the motor, the system including two or more hydraulic motors connected in parallel, with throughflow both ways, preferably of the multi-stage type, and drive-connected to the same winch shaft.
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