| 摘要 |
PURPOSE: A seismic isolation system is provided to prevent damage to a ball by absorbing vertical movement using a spring or rubber cushion and absorbing horizontal movement using a cylindrical roller. CONSTITUTION: A seismic isolation system comprises a bottom plate(10), multiple first cylindrical rollers(20), a middle plate(30), multiple second cylindrical rollers(40), and a top plate(50). The first cylindrical rollers are installed on the bottom plate. The middle plate is installed on the tops of the first cylindrical rollers and is rolled along the first cylindrical rollers. The second cylindrical rollers are installed on the top of the middle plate in the vertical direction of the first cylindrical rollers. The top plate is installed on the tops of the second cylindrical rollers and is rolled along the second cylindrical rollers.
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