| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling preventive device for an elevating floor excellent in safety capable of certainly preventing unstable movement of the elevating floor such as rolling, etc., after setting a floor of a pool, etc., at a position at a desired height. SOLUTION: A rolling preventive device 60 to prevent rolling of an elevating floor 2A movable along the vertical direction of an opening part of a pool, etc., and filled with air so that buoyancy in the water becomes roughly zero while maintaining it at a desired height position is constituted of a first arm 61 installed on the side of a fixed floor and a second arm 62 installed on a lower part of the elevating floor 2A, and head end parts of the first arm 61 and the second arm 62 are constituted by axially supporting them free to extend and contract through a shaft 63. |
