HYDRAULIC SYSTEMS FOR WINCHES

摘要

A hydraulic system is adapted by means of a winch (14) having drive motor (15) and a control valve (19) to quarter a raft (10) from an upper to a lower position by means of the force of gravity and thereafter to lift an empty hook by means of hydraulic motive power. The one side of the drive motor (15), with the control valve in the quartering position (III), is connected to an accumulator (43) for the reception of pressure oil during the operation of the drive motor (15) in the quartering direction. The one side of the drive motor (15), with the control valve (19) in the lifting position (II), is connected to the accumulator (43) for feeding pressure oil for the operation of the drive motor (15) in the lifting direction.