| 摘要 |
PROBLEM TO BE SOLVED: To provide a flood water cut-off device that is installed near an entrance of a building or the like, includes a water-stop plate automatically rotated and erected when excess water from a flood or a torrential rainfall flows into a storage of the water-stop plate, and prevents water from penetrating into the building from the entrance. ! SOLUTION: A floating platform for placing a front portion of a rotatable water-stop plate is formed inside a water-stop plate storage tank, while a fulcrum platform for supporting a rotatable fulcrum of the water-stop plate is fitted on the other side for storing a floating body in the water-stop plate storage tank, and a guiding bar for guiding the floating body to an inner side surface of the water-stop plate storage tank is fitted, along with an abutting plate for guiding the floating body underneath the water-stop plate, and the rotatable fulcrum is fitted on the side that comes at the bottom when the water-stop plate is erected. Thus, a water st |
