| 摘要 |
PROBLEM TO BE SOLVED: To provide a crane 1 with a base isolation device 4 having an uniform base isolation characteristic in the traverse direction x and the travel direction y, and also in the oblique direction of synthesizing the traverse direction and the travel direction.SOLUTION: This crane 1 includes a leg structure 2 and a travel device 3. The crane 1 includes the base isolation device 4 suspended by the leg structure 2, a grounding member 19 arranged on the under surface of the base isolation device 4 and a connecting-separating mechanism 5 for attaching-detaching the leg structure 2 and the travel device 4. The crane 1 is constituted so that when an earthquake occurs, the connecting-separating mechanism 5 separates the leg structure 2 and the travel device 3, and the grounding member 19 lands on the ground surface 6 to support the leg structure 2. |
