| 摘要 |
PROBLEM TO BE SOLVED: To provide a hooking detector which does not output alarm even when a hook is temporarily detached in a transition time from work to work.SOLUTION: A hooking detector of the present invention has a hook handling detection and alarm output postponement means for detecting gripping of a hook or contact to the hook, and postponing alarm output or output to a communication means of output of detection means even when the hook is not hooked when detecting gripping or contact. |
