METHOD AND APPARATUS FOR DETECTING CRANE HOOK

PROBLEM TO BE SOLVED: To provide an apparatus for detecting a crane hook that can surely determine whether the hook is subjected to loading, and also facilitates maintenance.SOLUTION: An apparatus for detecting a crane hook includes: piping 3 disposed on a hook 4 so that fluid can be discharged to a central part 4b1 of the hook 4; and a fluid supply device 6 to supply fluid to the piping 3. A determination is made as to whether the central part 4b1 of the hook 4 is subjected to loading on the basis of at least one of a change in pressure and a change in flow rate of the fluid supplied to the piping 3.