Patent ID: 9091033
Filing Date: 2015-07-28
Classification: E02B

Abstract:
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; and an 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, and a 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.