| 摘要 |
PROBLEM TO BE SOLVED: To provide a damping device capable of arbitrarily adjusting the position of a fixed outer tube in the axial direction of a screw rod by properly rotating a rotor including a nut member relative to the screw rod, holding a building on a foundation at a specified position or returning the building to a specified position on the foundation, and sufficiently developing an effect specific to a base isolation device. SOLUTION: In this damping device, the axial one end of the rotor is projected from the hollow part of the fixed outer tube in the axial direction, a tool acting part for engaging a tool therewith is formed at the projected end, the tool is engaged with the tool acting part, and the tool is operated to arbitrarily rotate the rotor. Thus, the position of the fixed outer tube on the screw rod can be arbitrarily changed. COPYRIGHT: (C)2006,JPO&NCIPI
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