06-11-2014 дата публикации
Номер: US20140328628A1
The present invention provides a floating flap gap which has a door body with a forward end which is able to swing upwards, in a direction in which the water flows into an opening or at an access way, around a base end thereof serving as a fulcrum. The door body is attached to one end of a wire rope, and an auxiliary force generating means is attached to the other end thereof. This structure makes it possible to prevent an overflow during the initial influx of water and to enhance the ability of the door body to follow the water level when the door body begins to lower. This structure additionally makes it possible to mitigate a shock which occurs when raising of the door body is completed and when lowering of the door body is completed. 1. A floating flap gate which is disposed at an opening or at an access way , so as to block the opening or the access way when water flows in , the floating flap gate comprising:a door body with a forward end which is able to swing upwards, in a direction in which the water flows in and within a plane in a height direction, around a base end thereof serving as a fulcrum; andan auxiliary force generating means attached to one end of a rope, the other end of which is attached to the door body, the auxiliary force generating means comprising:a counterweight inside which is formed a space,an elastic member disposed in the space within the counterweight, so that when a compressive force operates, the elastic member reacts to the compressive force, and tries to return to its original state, anda presser plate connected to the one end of the rope passing through a central portion of the elastic member disposed within the space via a hole formed in a ceiling of the counterweight, the presser plate being brought into contact with a lower surface of the elastic member to cause the compressive force to operate on the elastic member.2. The floating flap gate according to claim 1 , wherein the elastic member is a compression spring.3. The ...
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