| 摘要 |
PROBLEM TO BE SOLVED: To automatically turn a hook to a prescribed position, and enhance workability by fixing the hook having a mechanism whose direction changes by turn by dead weight of an inverse J-shaped hook to a universal steel plate by a bolt and a nut. SOLUTION: A projection part on the upper side of a shaft cross section of a hook 24 is arranged on the installing directional side of the hook 24, and is erected at a right angle on a universal steel plate 10. In this case, when the projection part is installed by being dislocated from the installing direction of the hook 24, the hook 24 can turn in the direction having a constant inclination to the universal steel plate 10. A similar effect is exhibited by installing it by dislocating the lowest point of an inclined face 27 of a bearing member 23 from the front direction of the universal steel plate 10. A degree of freedom is given to an angle at which the hook 24 is stood to the universal steel plate 10 by adjusting the direction of the hook 24, the direction of the projection part and the direction of the lowest point of the inclined face 27 of the bearing member 23. When the angle is wanted to be fixed, a spacer is installed on a shaft between the lower side of the bearing member 23 and a lower side projection part. |
