Winch system for controlling closing and lifting of a grab

Details Winch system for controlling closing and lifting of a grab Winch system for controlling closing and lifting of a grab

B - Operations, Transporting

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B66C 1/28 (2006.01) B66C 1/22 (2006.01) B66C 1/42 (2006.01) B66C 3/12 (2006.01) B66D 1/26 (2006.01) B66D 1/50 (2006.01)

Patent

CA 1116589

ABSTRACT A winch arrangement for a crane having a grab, closing rope, and a holding rope, said arrangement having a holding and a closing drum to receive a portion of and apply a force to the closing and holding ropes, a holding and a closing hydraulic motor each of which is coupled to the respective holding or closing drum so as to drive same, and a hydraulic circuit to control the motors to apply a lifting force to both the holding and closing ropes via said holding and closing drums.

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