PURPOSE: To allow the pass of a large-sized ladle on various facilities by forming the hook of a crane of a first hook part provided on one side surface side in the lower part, and a second hook part provided on the opposite side and upper than the first hook part.

CONSTITUTION: A hook 32 is formed of a first hook part 33 provided on one side surface side in the lower part and a second hook part 34 provided on the opposite side and upper than the first hook part. A ladle 40 is caught by the lower first hook part 33 at the time of its inversion, and caught by the upper hook part 34 at the time of movement. Thus, if the ladle 40 is large-sized, its lower surface is held at a height as in the past at the time of movement, and can be passed on various facilities on the ground without changing the girder of a crane 20.