| 摘要 |
PROBLEM TO BE SOLVED: To perform safe countermeasure that a hook is stably ground-contacted and reversed without falling it to a side when a hung up baggage is ground-contacted, a rope hung on the hook is self-released by reversal action and removal of the rope does not occur in the baggage hanging state in the hook suspended on a crane and hanging up the baggage. SOLUTION: The automatic hook is constituted by a hook module 5; and a hanging wire module 8, and further, the hook module 5 comprises the hook 10 constituted by a hook part 6, an opposite reversal prevention member 9, a ground-contact flat surface 20, a long hole 11 of an approximately chevron shape and a rope insertion part 7; and a hook hanging member 25. At unloading, the automatic hook is in ground contact with the ground-contact flat surface 20, thereby, a horizontal shaft 17 loosely inserted to the hook long hole 11 is guided to a hole inner surface in the hook long hole 11 and is descended from a first hole center P1 toward a second hole center P2. A center of gravity W of the hook is positioned at an upper part than the hole center P3 and when the horizontal shaft 17 arrives at the hole center P3, it is reversed by rotation moment generated around P3 to self-release the rope. COPYRIGHT: (C)2008,JPO&INPIT
|
