| 摘要 |
PROBLEM TO BE SOLVED: To provide a base isolation support device of a crane capable of efficiently absorbing the shock of an earthquake, while enhancing stability of the crane, without wholly mounting ballast with a simple structure. SOLUTION: A base frame 14 is supported by a stand beam 12 to be fixed and arranged via laminated rubber 13 as a plurality of sets of horizontal directional displacement absorbing means arranged so as to sandwich the stand beam 12 from above and below. A mast 2 is erected on the base frame 14 so that an interval between the axis of the mast 2 and an arranging position of the respective sets of laminated rubber 13 becomes equal, and a load and the overturning moment acting on the mast 2 are received by compression of the laminated rubber 13. COPYRIGHT: (C)2007,JPO&INPIT
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