| 摘要 |
PROBLEM TO BE SOLVED: To provide an anti-earthquake pneumatic spring vibration isolated table including a gas discharging device for discharging gases inside a leg tank and a pneumatic spring. SOLUTION: The vibration isolated table comprises an equipment mounting bench 1, a leg 2 which supports the equipment mounting bench 1 and is provided with a tank thereinside for gas highly pressurized, a pneumatic spring 3 which is attached between the equipment mounting bench 1 and the leg 2 and communicates with the tank of the leg 2 thereinside, and a gas supplying source which is connected with the tank of the leg 2 using a gas pipe 5 and supplies a highly-pressurized gas. The vibration isolated table is provided with the gas discharging device for discharging the gases inside the tank of the leg 2 and the pneumatic spring 3 when a vibration of magnitude equal to or larger than a certain value is applied. Therefore, the bench 1 can be prevented from widely moving due to vibrations caused by an earthquake, and thus equipment mounted on the bench 1 can be prevented from being damaged. COPYRIGHT: (C)2009,JPO&INPIT
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