| 摘要 |
<p>The present invention provides a crane safety hook having a safety ring at a mouth of the hook to be rotated. The crane safety hook includes: the safety ring wherein a spiral spring is provided for an axial pin to apply an elastic force to the inside of the hook; a concave grove formed along the center of the inner side of the hook and having a predetermined length; a through-hole formed on the top of the hook in a diagonal direction and having a predetermined length; and a wire of which one end is fixated to the outer center of the safety ring and the other end passes through the through-hole to be fixated to the tip of the hook. According to the present invention, the safety ring at the mouth of the hook to be rotated applies an elastic force to the inside of the hook and is rotated to the outside of the hook by a rope engaged with the inside of the hook, thereby allowing the engagement and detachment of the hook with or from the rope and preventing an escape of the rope from the inside of the hook.</p> |
