Screw-propeller turning-over device

A propeller turn-over device comprises an upper bracket, a lower bracket, a middle shaft and a nut. The middle shaft is fixedly connected with the lower bracket at the bottom thereof. The upper part of the middle shaft is wedge-shaped, and the screw thread is disposed on a disk portion and matched w...

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Bibliographic Details
Main Authors SHEN HONGSHU, LIU YAN, SUN LI, LIU JINGCHENG, SUN HAILIN
Format Patent
LanguageChinese
English
Published 09.06.2010
Subjects
CRANES
HAULING
HOISTING
LIFTING
LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES
PERFORMING OPERATIONS
TRANSPORTING
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Summary:A propeller turn-over device comprises an upper bracket, a lower bracket, a middle shaft and a nut. The middle shaft is fixedly connected with the lower bracket at the bottom thereof. The upper part of the middle shaft is wedge-shaped, and the screw thread is disposed on a disk portion and matched with the nut; upper and lower lifting eyes are respectively disposed at the top and the bottom ends of the middle shaft; a shaped circle hole matched with the wedge-shaped part of the middle shaft is disposed in the middle of the upper bracket which is sleeved on the wedge-shaped part through the shaped circle hole; and the nut is on the middle shaft and pressed tightly on the upper bracket through a gasket to form the propeller turn-over device. A propeller is assembled into the upper and the lower brackets and pressed using the nut, and can not be contact with the sling when slinging for turn-over; therefore the damage to a blade and cut-off of the sling are thoroughly prevented. The devicechanges the original pro
Bibliography:Application Number: CN2008110612