| 摘要 |
PROBLEM TO BE SOLVED: To provide a waterproof plate device capable of preventing a waterproof plate from abruptly moving up.SOLUTION: A waterproof plate device includes: a waterproof plate 20 which moves up over a road surface to dam up water; a waterproof plate housing pit 2b formed under the road surface so as to house the waterproof plate; a catchment pit 2a provided in a passage where the waterproof plate housing pit is formed so as to allow water to flow therein; a catchment bucket 19 arranged in the catchment pit so as to move up and down in the catchment pit according to the weight of water reserved in the catchment pit; and a transfer mechanism 31 moving the waterproof plate up and down as the catchment bucket moves up and down, the transfer mechanism being equipped with waterproof plate speed reduction means 50 which reduces the moving-up speed of the waterproof plate. |
