| 摘要 |
PURPOSE: A vibration isolation excess floor using a ball bearing is provided to easily solve the difficulties of horizontal installation due to a steel ball and to absorb vibration by using the steel ball when earthquake happens. CONSTITUTION: A vibration isolation excess floor (100) using a ball bearing comprises a structure (110), a leg unit (120), a vibration isolation bearing unit (130), and a level control unit (150). The structure is installed in the upper part in order to support protected equipment. The leg unit is separately installed in the lower part of the structure in order to support the structure. The vibration isolation bearing unit is installed between each leg units and the structure and comprises an upper slide plate (131), a lower slide plate (132), and a steel ball (133). The steel ball is installed in order to absorb vibration between an upper slide surface (131a) of the upper slide plate and a lower slide surface of the lower slide plate. The level control unit is installed between the leg unit and the vibration isolation bearing unit. The level control unit supports the vibration bearing unit and controls a level through inclination control of the vibration isolation bearing unit.
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