FLOATING BODY TYPE FLAP GATE

PROBLEM TO BE SOLVED: To restrain deflection of a door body in inspection time of operation confirmation to deflection in water pressure action time, without enlarging a thickness of the door body, even when installed in a wide place of a span.SOLUTION: A floating body type flap gate can rotatably f...

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Bibliographische Detailangaben
Hauptverfasser: SHIROYAMA KOJI, SAYAMA SHINICHI, YOSHIKI RYUTA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To restrain deflection of a door body in inspection time of operation confirmation to deflection in water pressure action time, without enlarging a thickness of the door body, even when installed in a wide place of a span.SOLUTION: A floating body type flap gate can rotatably float a door body 2 with the base end side as a fulcrum, and comprises a suspension beam 4 for providing an arched camber where a central part in the longitudinal direction becomes a maximum warping quantity in an initial state. The suspension beam 4 is arranged in a tip part of the door body 2 so that the camber is positioned on the upper side in the floating direction of the door body 2 when viewing the door body 2 of a falling-down state from the tip side. A counterweight 7 is connected to the tip side of the door body 2 or the suspension beam 4, and assists floating-up of the door body 2. In inspection time of operation confirmation, the pulled-up suspension beam 4 burdens weight of acting when the door body 2 stands up.SELECTED DRAWING: Figure 1 【課題】径間の広い場所に設置する場合でも、扉体の厚さを大きくせずに、動作確認の点検時における扉体のたわみを水圧作用時のたわみに抑える。【解決手段】扉体2が基端側を支点として回転浮上可能な浮体式フラップゲートである。初期状態では長手方向中央部が最大の反り量となるアーチ状のキャンバーを設けた吊りビーム4を備える。扉体2の先端部に、前記吊りビーム4を、倒伏状態の扉体2を先端側から見た場合にキャンバーが扉体2の浮上方向の上側に位置するように配置する。扉体2あるいは吊りビーム4の先端側にカウンタウエイト7を接続し、扉体2の浮上を補助する。動作確認の点検時は、引き上げられた前記吊りビーム4が、扉体2の起立時に作用する重量を負担する。【選択図】図1