| 摘要 |
PROBLEM TO BE SOLVED: To provide rolling type seismic isolation equipment capable of firmly integrating upper and lower trays so as not to permit a sphere to move at an advantageous cost and, in addition, capable of reducing the number of waste parts generated at the time of disintegrate the integration after installation. SOLUTION: The upper and lower trays 4 and 5 are jointed with screw bodies 13 crossed vertically between the upper and lower trays at plural places around the sphere, and the sphere is fixed at a predetermined position between the upper and lower trays. Head portions 13a of the screw bodies 13 are protruded upward of the upper surface of the upper tray. The lower tray 4 is equipped with a portion 4b protruding sideward from the upper tray 5, and the protruded portions 4b are used as jointing portions to a substructure such as a foundation or the like. COPYRIGHT: (C)2003,JPO
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