JP3988078B2

JP3988078B2 - Pneumatic undulation gate

Info

Publication number: JP3988078B2
Application number: JP2002288271A
Authority: JP
Inventors: 章雄飯田; 祥雄飯田
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-01
Filing date: 2002-10-01
Publication date: 2007-10-10
Anticipated expiration: 2022-10-01
Also published as: JP2004124448A

Description

【０００１】
【発明の属する技術分野】
この発明は、水路の底部に設けた回転中心によって扉体が自在に起立または倒伏を行なうことにより、水路の流水を堰上げまたは放流する目的で使用される起伏ゲートの一種で、鋼板製の扉体の下流側根元部に位置する平らな長方形に製作した３辺が閉じ１辺が開いたゴム引布製の空気袋に陸上の空気操作装置から空気管を接続して圧縮空気を送入すれば、空気袋が膨張して扉体を起立させ、逆に空気袋から圧力を有する空気を排出すれば、空気袋が平らに収縮して扉体が倒伏するようにした空圧式起伏ゲートに関するものである。
【０００２】
【従来の技術】
従来の空圧式起伏ゲートにおいては、鋼板製の扉体の曲げ剛性は鋼板の厚さに依存するのが基本である。そして、扉体の有効高さが大きくなり、扉体の水圧荷重に対抗する曲げ剛性が鋼板の厚さだけに依存していては扉体が非常に重いものとなり不経済となる場合は縦リブを使用する。すなわち、鋼板製扉体の上流面に適当な幅の細長い鋼板（縦リブ）を当該面に直角の姿勢で水の流れに平行な方向に適当な間隔で溶接取付けして、扉体が水圧荷重に対抗する曲げ剛性の強化を行なうのである。
【０００３】
【発明が解決しようとする課題】
ところで、この縦リブが扉体の曲げ剛性を補う効果は非常に優れており、また根元部分を空気袋で支持された扉体の下端付近の曲げモーメントは相当に大きな値となるので、従来は縦リブは高さ（鋼板の幅）を減少させつつ曲げモーメントが零となる扉体下端まで延長したのであるが、その結果、下部水密ゴムの縦リブの下端付近に当る部分を切除することになり、漏水が発生する不具合があった。
【０００４】
【課題を解決するための手段】
そこでこの発明の空圧式起伏ゲートにおいては、鋼板製の扉体の上流面の下端部付近の下部水密ゴム取付部分には縦リブを取付けないこととした。その結果、下部水密ゴムは鋼板製扉体の上流面の下端部に連続して取付けられることになり、漏水が発生しない。
【０００５】
しかし、水圧荷重により扉体に作用する曲げモーメントが大きな値となる位置で、縦リブによる補強を失った鋼板製扉体には、縦リブ下端付近で大きな応力が発生し破断の原因となるので、縦リブ下端には下部水密ゴムと押え板の厚さの和程度の幅の細長い鋼板を横リブとして鋼板製扉体の面に直角の姿勢で縦リブに直交する方向で溶接して応力の分散を図ると同時に、鋼板製扉体の下端から横リブ取付位置より上方の適当な位置までの間においては、鋼板の厚さを他の部分より相当量厚くして（一般に２倍から６倍程度）縦リブ下端付近の鋼板の応力を許容値に納めるようにした。
【０００６】
このときの縦リブの下端付近の応力状態については、有限要素法により細部に及ぶ検討が必要となるが、電子計算機の応用により計算可能である。
【０００７】
また、横リブの高さは必要以上に水と砂礫の流下を妨げることのないよう下部水密ゴムとその押え板の厚さの和程度としたものであるが、横リブの存在は下部水密ゴムとその押え板を流下する石や砂礫から保護する効果があるから、横リブにはその意味における存在理由もある。
【０００８】
【発明の実施の形態】
以下、この発明に係る起伏ゲートの実施の形態を、図面に基いて詳細に説明する。
図１、図２、図３、図４ならびに図５は、この発明の空圧式起伏ゲートの１実施例を示すものであり、図１は起伏ゲートの背面図、図２は起伏ゲートの断面図でともに起立状態を示し、図３は起伏ゲートの断面図で倒伏状態を示し、図４は扉体の説明図であり、図５は空気袋の説明図である。
【０００９】
図１、図２および図３において、断面が長方形の水路の底のコンクリートの上面１に、水路を横断して１列に設置した鉛直のアンカーボルト２が主押し付け板３によって、３辺が閉じ１辺が開いた平らな長方形に製作したゴム引布製の空気袋４の開いた辺の縁５を、水路の底のコンクリートの上面１に押え付けることによって、空気袋４の開いた辺を密閉すると同時に、空気袋４を水路の底のコンクリートの上面１に固定する。
【００１０】
この空気袋４の開いた辺の縁５の端には、樹脂製のロッド６によって補強繊維の折曲半径が過小とならないように保護した補強繊維の折返し部７があり、主押し付け板３の上流の角８ならびにコンクリートの上面１の上流の角９に掛かって、空気袋４の開いた辺の縁５が空気袋４に作用する張力によって引抜かれないように機能する。
【００１１】
次に、主押し付け板３に沿って上流側の基礎コンクリート１０に設けた止水金物１１の上面に充分な強度を有するゴム引布製の繋ぎ板兼用水密ゴム１２の１辺をボルト１３と押え板１４によって強固に固定し、主押し付け板の上面にもボルト１５と押え板１６によって強固に固定し、加えて下流側の他の辺を鋼板製の扉体１７の下部の増厚部１８の上流面に、ボルト１９と押え板２０とにより強固に固定することによって、基礎コンクリート１０に設けた止水金物１１と主押し付け板３と扉体１７の下部の増厚部１８の間の漏水を防止する。
【００１２】
この繋ぎ板兼用水密ゴム１２の端部には樹脂製のロッド２１によって補強繊維の折曲半径が過小とならないように保護した補強繊維の折返し部２２があり、押え板１４の上流の角２３ならびに押え板１９の下流の角２４に掛かって、繋ぎ板兼用水密ゴム１２が所定の位置から引抜かれないように機能する。
【００１３】
加えて、水路の底の空気袋４より下流側の適当な位置のコンクリートの上面２５に設置したアンカーボルト２６と押え板２７で一端をコンクリートの上面２５に固定した十分な強度を有するゴム引布製の帯２８の他端を扉体１７の下流側の面の空気袋４の接触する位置より上の適当な位置にボルト２９と押え板３０で固定することにより、扉体１７が所定位置まで起立したときには、この帯２８に作用する張力により扉体１７が停止するようにする。
【００１４】
この帯２８においても、その端部には樹脂製のロッド３１によって補強繊維の折曲半径が過小とならないように保護した補強繊維の折返し部３２があり、押え板２７の角３３ならびに押え板３０の角３４に掛かって、作用する張力によって帯２８が所定の位置から引抜かれないように機能する。
【００１５】
次に扉体１７の頭部の曲げ加工部３５は、起立時には扉体１７を越流する水を下流側に導くことにより、越流する水や一緒に流下する流木等が空気袋４や帯２８等を打たないよう保護する。
また倒伏時には、扉体１７の頭部の曲げ加工部３５の先端が支持台３６に支持されて、コンクリートの上面１、下流のコンクリートの上面２５、ならびに扉体１７の下流面によって必要な空間を確保するから、空気袋４や帯２８は扉体１７に押し潰されることがない。
【００１６】
図４に示すように、鋼板製の扉体１７は、堰幅より少し小さい幅方向の寸法と、起立時に必要な起立高を確保するために必要な長さを有するものであって、この鋼板製の扉体１７の頭部には曲げ加工部３５が形成され、その下部には主押し付け板３の厚さとほぼ等しい厚さの増厚部１８を設けてある。この増厚部１８の上部の扉体１７の一般部の板厚に溶接接合される部分は、技術基準にしたがって緩やかに板厚を減少させる。また増厚部１８の下端には半円形の部分３７を設けて扉体１７が起伏運動をするに際して、扉体１７の下部の増厚部１８の下端の半円形の部分３７が空気袋４の上面３８を滑りやすくする。
【００１７】
また鋼板製の扉体１７の下部の増厚部１８の下端の半円形の部分３７に沿う部分には、繋ぎ板兼用水密ゴム１２を固定するボルト１９をねじ込む雌ねじ３９が１列に並んでおり、その上方には、帯２８を固定するボルト２９に合わせたボルト孔４０がある。
【００１８】
さらに扉体１７の下部の増厚部１８の下端の上流面の繋ぎ板兼用水密ゴム１２の取付部に沿って横リブ４１を取付けする。横リブ４１は繋ぎ板兼用水密ゴム１２とその押え板２０の厚さの和程度の幅を有する細長い鋼板を扉体１７の下部の増厚部１８の上流の面に直角の姿勢で、増厚部１８の下端の半円形の部分３７に平行な方向で溶接される。
【００１９】
また扉体１７と下部の増厚部１８の上流面の横リブ４１より上方の区域には、扉体１７の高さ方向の曲げ剛性を強化する目的で、適当な幅の細長い鋼板を当該面に直角の姿勢で横リブ４１に直交する方向に適当な間隔で溶接取付けして縦リブ４２としてある。縦リブ４２を取付けする方向は扉体１７の上を水が越流するときの流れの方向に平行であるから、縦リブ４２は水や砂礫等の流下を妨げることがない。
【００２０】
他方横リブ４１は、縦リブ４２に直交する方向に取付けられるから、その方向は水や砂礫等の流下を妨げる方向であるけれど、横リブ４１の高さは繋ぎ板兼用水密ゴム１２と押え板２０の厚さの和程度であるから、起伏ゲートの機能を確保するのに必要な寸法の範囲に納まっている。
かえって、横リブ４１は押え板１４，１６，２０とともに繋ぎ板兼用水密ゴム１２が流下する石や岩によって損傷するのを防止する効果がある。
【００２１】
図５に示すように、空気を排出したときには、平らな長方形となるよう製造された空気袋４の開いた辺の寸法は、ゲート幅より少し小さく、これと直角の方向には、膨張したときに扉体１７を押し起すのに十分な寸法を有している。
そして主押し付け板３で押えるべき開いた辺以外の３辺では、ゴム引布が連続して折れ曲り閉じている。また、開いた辺では、相対する２枚のゴム引布の縁５の端部に、樹脂製のロッド６によって補強繊維の折曲半径が過小とならないよう保護した補強繊維の折返し部７がある。さらに、この折返し部７に平行してアンカーボルト２が貫通するための孔４３が２枚のゴム引布の縁５を貫いている。また空気袋４の下側のゴム引布の中央付近には、口金４４が取付けられる。
【００２２】
このように構成した上で、空気袋４の下部の口金４４に接続した空気管４５を水路のコンクリートに埋設するなどして陸上に導き、空気操作装置の排気用開閉弁４６、排気用流量調節弁４７、排気放出部４８、給気用開閉弁４９、給気用流量調節弁５０、空気圧縮機５１に、図１、図２および図３のように接続する。
【００２３】
その上で空気圧縮機５１から給気用流量調節弁５０、給気用開閉弁４９、空気管４５、口金４４を経由して空気袋４の内部に空気を圧入した結果、扉体１７が起立した状態の断面図が図２であり、扉体１７の頭部の曲げ加工部３５が、越流する水を下流に導いて、空気袋４や帯２８を打たないよう機能している。
この状態を下流から見たのが図１であり、空気袋４が扉体１７の背面側にあってほぼ全幅において扉体１７を支えている。
【００２４】
他方、空気圧縮機５１を停止し、給気用開閉弁４９を閉じ、排気用開閉弁４６を開いて、空気袋４の内部の圧力を有する空気を、排気用流量調節弁４７によって制御しつつ、排気放出部４８から大気中へ放出した結果、扉体１７が完全に倒伏した状態の断面図が図３である。
この状態では、水路の底を土砂等が激しく流下することがあるので、主押し付け板３に沿って直上流の基礎コンクリート１０に設置した止水金物１１は基礎コンクリート１０の落差部の補強の機能をも有するようにする。
【００２５】
図６、図７、図８および図９はこの発明に係る起伏ゲートの他の実施例を示すものであり、図６は起伏ゲートの断面図で起立状態を示し、図７は起伏ゲートの断面図で倒伏状態を示し、図８は扉体と軸受付主押し付け板の説明図であり、図９は空気袋の説明図である。
【００２６】
図６および図７において、断面が長方形の水路の底に、水路を横断して設置したアンカー金物６１に設けた１列の鉛直の雌ねじ６２にねじ込むボルト６３が、軸受付主押し付け板６０の下流側の凸部６４によって空気袋４の開いた辺の縁５を、アンカー金物６１の下流側の凸部６５に押え付けることによって、空気袋４の開いた辺を密閉すると同時に、空気袋４をアンカー金物６１に固定する。
この空気袋４の開いた辺の縁５の端には、樹脂製のロッド６によって補強繊維の折曲半径が過小とならないように保護した補強繊維の折返し部７があり、軸受付主押し付け板６０の下流側の凸部６４の上流側の角６６とアンカー金物６１の下流側の凸部６５の上流側の角６７に当たって、空気袋４の開いた辺の縁５が空気袋４に作用する張力によって引抜かれないように機能する。
【００２７】
また、ボルト６３によって軸受付主押し付け板６０を押え付けるときには、その上流端の凸部６８がアンカー金物６１の上流側の凸部６９によって支持され、ボルト６３をねじ込むほど、軸受付主押し付け板６０の下流側の凸部６４はより強く空気袋４の開いた辺の縁５を押し付けるので、空気袋４の開いた辺の密閉と固定が確実なものとなる。
さらに、軸受付主押し付け板６０の下流縁に突起した軸受７０が扉体１７の下部の増厚部１８の下端の凹部７１において回転軸７２と組合い、同時に扉体１７の下部の増厚部１８の下端に突起した軸受７３が軸受付主押し付け板６０の下流縁の凹部７４において回転軸７２と組合うから、扉体１７は軸受付主押し付け板６０に対し回転自由であり、自在に起立または倒伏することができる。
【００２８】
一方、１枚の下部水密用のゴム板７５の１辺を押え板７６とボルト７７によってアンカー金物６１の止水部７８の上面に固定し、他の辺を押え板７９とボルト８０によって扉体１７の下部の増厚部１８の上流面の横リブ４１より下方に固定すると同時に、その中間において押え板８１とボルト８２によって軸受付主押し付け板６０の上面に固定することにより、水路の底に設置したアンカー金物６１と扉体１７の下部の増厚部１８の間の漏水を防止する。
加えて、水路底の空気袋４より下流側の適当な位置に設置したアンカーボルト２６と押え板２７で一端をコンクリートの上面２５に固定した、十分な強度を有するゴム引布製の帯２８の他の端を、扉体１７の下流面の空気袋４の接触する位置より上の適当な位置にボルト２９と押え板３０で固定することより、扉体１７が所定の姿勢まで起立したときには、この帯２８に作用する張力により扉体１７が停止するようにする。
【００２９】
次に扉体１７の頭部の曲げ加工部３５が、起立時には扉体１７を越流する水を下流に導いてから落下させるので、越流する水や一緒に流下する流芥や流木等が空気袋４や帯２８等を直接打たないように保護する。また倒伏時には、扉体１７の頭部の曲げ加工部３５の先端が支持金物３６に支持されて、コンクリートの上面２５と扉体１７の間に必要な空間を確保するから、空気袋４や帯２８が扉体１７により押し潰されることがない。
【００３０】
さらに、扉体１７の下部の増厚部１８の上流面の下端水密用のゴム板７５の取付部に沿って横リブ４１を溶接する。横リブ４１はゴム板７５とその押え板７９の厚さの和程度の幅を有する細長い鋼板で扉体１７の下部の増厚部１８の上流面に直角の姿勢で回転軸７２に平行な方向で設けてある。
また扉体１７と下部の増厚部１８の上流面の横リブ４１より上方の区域には扉体１７の高さ方向の曲げ剛性を強化する目的で適当な幅の細長い鋼板を当該面に直角の姿勢で横リブ４１に直交する方向に適当な間隔で溶接取付けして縦リブ４２としてある。
縦リブ４２を取付ける方向は扉体１７の上を越流する水の流れに平行であるから縦リブ４２は水や砂礫等の流下を妨げることがない。
【００３１】
図８には扉体１７の増厚部１８、曲げ加工部３５、横リブ４１、縦リブ４２、軸受７３、凹部７１の配置関係を示すと同時に、回転軸７２で相互に回転自由であるよう結合された軸受付主押し付け板６０との関係、ならびに軸受付主押し付け板６０における軸受７０、凹部７４、上流の凸部６８、下流の凸部６４とその上流側の角６６の配置関係を示している。
さらに軸受付主押し付け板６０の上面の上流縁にはゴム板７５を固定するボルト８２に合わせた雌ねじ８３が並んでおり、その下流側にはボルト６３に合わせた座掘りつき孔８４が平行に並んでいる。
また扉体１７の下部の増厚部１８には横リブ４１に沿う位置にゴム板７５を固定するボルト８０に合わせた雌ねじ８５があり、扉体１７の上方には帯２８を固定するボルト２９に合わせたボルト孔８６がある。
図９にこの実施例における空気袋４の説明図を示す。この実施例では軸受付主押し付け板６０を押え付けるボルト６３が空気袋４を貫通しないから、開いた辺の縁５に孔を開ける必要がないので、密閉もより確実となり有利である。
【００３２】
このように構成した上で、空気袋４の下部の口金４４に接続した空気管４５を水路のコンクリートに埋設するなどして陸上に導き、空気操作装置の排気用開閉弁４６、排気用流量調節弁４７、排気放出部４８、給気用開閉弁４９、給気用流量調節弁５０、空気圧縮機５１に、図６および図７のように接続する。
【００３３】
その上で空気圧縮機５１から給気用流量調節弁５０、給気用開閉弁４９、空気管４５、口金４４を経由して空気袋４の内部に空気を圧入した結果、扉体１７が起立した状態の断面図が図６であり、扉体１７の頭部の曲げ加工部３５が、越流する水を下流に導いて、空気袋４や帯２８を打たないよう機能している。
【００３４】
他方、空気圧縮機５１を停止し、給気用開閉弁４９を閉じ、排気用開閉弁４６を開いて、空気袋４の内部の圧力を有する空気を、排気用流量調節弁４７によって制御しつつ、排気放出部４８から大気中へ放出した結果、扉体１７が完全に倒伏した状態の断面図が図７である。
【００３５】
上記各実施例の空圧式起伏ゲートにおいて、ゲート幅の小さい（６ｍ以下程度）空圧式起伏ゲートを、扉体の回転中心の延長方向に並べて設置することにより、幅の大きい水路の起伏ゲートとすることが可能である。
【００３６】
【発明の効果】
この発明の空圧式起伏ゲートによれば、扉体１７の下部に増厚部１８ならびに横リブ４１を設けることにより、増厚部１８の下端から横リブ４１に至る間の上流面に縦リブ４２を設けることなく、扉体全体の高さ方向の曲げ剛性を有効に強化することができるから、起伏ゲートの下部水密を形成するゴム板を連続して扉体１７の下部の増厚部１８にボルトと押え板で固定することが可能となった。
その結果、空圧式起伏ゲートの下部水密は完全なものとなり、長期間漏水の発生しない空圧式起伏ゲートを確実に建設できて、維持管理の容易性、経済性、ならびに空圧式起伏ゲートの景観性の向上に大きな成果を得ることができた。
【図面の簡単な説明】
【図１】この発明の起伏ゲートの一実施例を示し、起伏ゲートが起立した状態の背面図である。
【図２】起伏ゲートが起立した状態の断面図である。
【図３】起伏ゲートが倒伏した状態の断面図である。
【図４】起伏ゲートの扉体の説明図である。
【図５】この発明の空気袋の説明図である。
【図６】この発明の起伏ゲートの他の実施例を示し、起伏ゲートが起立した状態の断面図である。
【図７】起伏ゲートが倒伏した状態の断面図である。
【図８】起伏ゲートの扉体の説明図である。
【図９】空気袋の説明図である。
【符号の説明】
１コンクリートの上面
２アンカーボルト
３主押し付け板
４空気袋
５開いた辺の縁
６ロッド
７折返し部
８，９角
１０基礎コンクリート
１１止水金物
１２繋ぎ板兼用水密ゴム
１３ボルト
１４押え板
１５ボルト
１６押え板
１７扉体
１８増厚部
１９ボルト
２０押え板
２１ロッド
２２折返し部
２３，２４角
２５コンクリートの上面
２６アンカーボルト
２７押え板
２８帯
２９ボルト
３０押え板
３１ロッド
３２折返し部
３３，３４角
３５曲げ加工部
３６支持台
３７半円形の部分
３８上面
３９雌ねじ
４０ボルト孔
４１横リブ
４２縦リブ
４３孔
４４口金
４５空気管
４６排気用開閉弁
４７排気用流量調節弁
４８排気放出部
４９給気用開閉弁
５０給気用流量調節弁
５１空気圧縮機
６０軸受付主押し付け板
６１アンカー金物
６２雌ねじ
６３ボルト
６４，６５凸部
６６，６７角
６８，６９凸部
７０軸受
７１凹部
７２回転軸
７３軸受
７４凹部
７５ゴム板
７６押え板
７７ボルト
７８止水部
７９押え板
８０ボルト
８１押え板
８２ボルト
８３雌ねじ
８４座掘りつき孔
８５雌ねじ
８６ボルト孔[0001]
BACKGROUND OF THE INVENTION
This invention is a kind of undulating gate used for the purpose of hoisting or discharging the flowing water of a water channel by allowing the door body to stand up or lie down freely by a rotation center provided at the bottom of the water channel, and is a door made of steel plate If you connect compressed air by connecting an air pipe from a land-based air operating device to a rubber-filled air bag made of a flat rectangle located at the base of the body on the downstream side and closed on one side This is a pneumatic hoisting gate in which the air bag expands and the door body is raised, and conversely, if air with pressure is discharged from the air bag, the air bag shrinks flatly and the door body falls. is there.
[0002]
[Prior art]
In a conventional pneumatic undulation gate, the bending stiffness of a steel plate door is basically dependent on the thickness of the steel plate. If the effective height of the door is increased and the bending rigidity against the hydraulic load of the door depends only on the thickness of the steel plate, the vertical rib is used when the door is very heavy and uneconomical. Is used. That is, an elongated steel plate (longitudinal rib) with an appropriate width is welded to the upstream surface of a steel plate door body at a right angle to the surface in a direction parallel to the flow of water, and the door body is subjected to a hydraulic load. Bending rigidity is strengthened against this.
[0003]
[Problems to be solved by the invention]
By the way, the effect that this vertical rib supplements the bending rigidity of the door body is very excellent, and the bending moment in the vicinity of the lower end of the door body whose base portion is supported by the air bag becomes a considerably large value. The vertical rib was extended to the lower end of the door body where the bending moment was zero while reducing the height (the width of the steel plate), but as a result, the portion corresponding to the lower end of the vertical rib of the lower watertight rubber was cut off. There was a problem that water leakage occurred.
[0004]
[Means for Solving the Problems]
Therefore, in the pneumatic undulation gate according to the present invention, no vertical rib is attached to the lower watertight rubber attaching portion in the vicinity of the lower end portion of the upstream surface of the steel plate door body. As a result, the lower watertight rubber is continuously attached to the lower end of the upstream surface of the steel plate door body, and water leakage does not occur.
[0005]
However, steel plate doors that have lost reinforcement by vertical ribs at positions where the bending moment acting on the door body due to hydraulic load is large will cause large stress near the lower end of the vertical ribs and cause breakage. The lower end of the vertical rib is welded in a direction perpendicular to the vertical rib in a posture perpendicular to the surface of the steel door body as a horizontal rib with a width equal to the sum of the thickness of the lower watertight rubber and the presser plate. At the same time as dispersion, between the lower end of the steel plate door body and a suitable position above the horizontal rib mounting position, the thickness of the steel plate is made considerably thicker than other parts (generally 2 to 6 times). Degree) The stress of the steel plate near the lower end of the longitudinal rib was kept within the allowable value.
[0006]
The stress state in the vicinity of the lower end of the vertical rib at this time needs to be studied in detail by the finite element method, but can be calculated by application of an electronic computer.
[0007]
The height of the horizontal rib is the sum of the thickness of the lower watertight rubber and its holding plate so as not to hinder the flow of water and gravel more than necessary, but the presence of the horizontal rib is the lower watertight rubber. There is also a reason for the existence of horizontal ribs in that sense because it has the effect of protecting stones and gravel flowing down the presser plate.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a relief gate according to the present invention will be described below in detail with reference to the drawings.
1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5 show one embodiment of the pneumatic relief gate of the present invention, FIG. 1 is a rear view of the relief gate, and FIG. 2 is a sectional view of the relief gate. 3 shows a standing state, FIG. 3 is a sectional view of the undulating gate, shows a lying state, FIG. 4 is an explanatory view of a door body, and FIG. 5 is an explanatory view of an air bag.
[0009]
1, 2, and 3, the vertical anchor bolts 2 installed in a row across the water channel are closed by the main pressing plate 3 on the concrete upper surface 1 at the bottom of the water channel having a rectangular cross section. The open side of the air bag 4 is sealed by pressing the edge 5 of the open side of the air bag 4 made of rubberized cloth made of a flat rectangle with one side against the top surface 1 of the concrete at the bottom of the water channel. At the same time, the air bladder 4 is fixed to the upper surface 1 of the concrete at the bottom of the water channel.
[0010]
At the end of the edge 5 of the open side of the air bag 4, there is a folded portion 7 of the reinforcing fiber protected by the resin rod 6 so that the bending radius of the reinforcing fiber is not excessively small. It acts on the upstream corner 8 as well as the upstream corner 9 of the concrete upper surface 1 so that the edge 5 of the open side of the air bag 4 is not pulled out by the tension acting on the air bag 4.
[0011]
Next, a bolt 13 and a press plate are attached to one side of a rubber-sealed cloth jointing water-tight rubber 12 having sufficient strength on the upper surface of a water stop fitting 11 provided on the upstream concrete foundation 10 along the main pressing plate 3. 14 is firmly fixed to the upper surface of the main pressing plate by the bolt 15 and the pressing plate 16, and the other downstream side is upstream of the thickened portion 18 at the lower part of the steel door 17. By firmly fixing to the surface with bolts 19 and presser plates 20, water leakage between the water stop hardware 11 provided on the foundation concrete 10, the main pressing plate 3, and the thickened portion 18 below the door body 17 is prevented. To do.
[0012]
At the end portion of the watertight rubber 12 also serving as a connecting plate, there is a folded-back portion 22 of the reinforcing fiber protected by the resin rod 21 so that the bending radius of the reinforcing fiber is not too small. It functions on the corner 24 downstream of the presser plate 19 so that the connecting plate / watertight rubber 12 is not pulled out from a predetermined position.
[0013]
In addition, it is made of rubberized cloth having sufficient strength with one end fixed to the upper surface 25 of the concrete by anchor bolts 26 and presser plates 27 installed on the upper surface 25 of the concrete at an appropriate position downstream of the air bag 4 at the bottom of the water channel. The other end of the belt 28 is fixed at a suitable position above the position where the air bag 4 on the downstream surface of the door body 17 is in contact with the bolt 29 and the holding plate 30, so that the door body 17 stands up to a predetermined position. When this occurs, the door body 17 is stopped by the tension acting on the band 28.
[0014]
Also in the band 28, there is a folded portion 32 of the reinforcing fiber protected at the end portion thereof by the resin rod 31 so that the bending radius of the reinforcing fiber is not excessively small, and the corner 33 of the presser plate 27 and the presser plate 30. The belt 28 functions so that the belt 28 is not pulled out from a predetermined position by the applied tension.
[0015]
Next, the bending portion 35 of the head portion of the door body 17 guides the water flowing over the door body 17 to the downstream side when standing up, so that the overflowing water, the driftwood flowing down together, etc. Protect from hitting 28 etc.
At the time of lying down, the tip of the bending portion 35 at the head of the door body 17 is supported by the support base 36, and a necessary space is formed by the upper surface 1 of the concrete, the upper surface 25 of the downstream concrete, and the downstream surface of the door body 17. Therefore, the air bag 4 and the belt 28 are not crushed by the door body 17.
[0016]
As shown in FIG. 4, the steel plate door 17 has a width direction dimension slightly smaller than the weir width and a length necessary for securing a standing height required for standing up. A bent portion 35 is formed at the head of the door body 17 and a thickened portion 18 having a thickness substantially equal to the thickness of the main pressing plate 3 is provided below the bent portion 35. The portion welded to the plate thickness of the general portion of the door body 17 above the thickened portion 18 is gradually reduced in thickness according to technical standards. In addition, when the door body 17 moves up and down by providing a semicircular portion 37 at the lower end of the thickened portion 18, the semicircular portion 37 at the lower end of the thickened portion 18 at the lower portion of the door body 17 is formed in the air bag 4. The upper surface 38 is made slippery.
[0017]
In addition, in a portion along the semicircular portion 37 at the lower end of the thickened portion 18 at the lower portion of the steel door 17, female screws 39 into which bolts 19 for fixing the connecting plate and watertight rubber 12 are screwed are arranged in a row. Above that, there is a bolt hole 40 matched with a bolt 29 for fixing the belt 28.
[0018]
Further, the horizontal rib 41 is attached along the attachment portion of the watertight rubber 12 for the connecting plate and watertight rubber on the upstream surface at the lower end of the thickened portion 18 at the lower portion of the door body 17. The lateral ribs 41 are thickened in a posture perpendicular to the upstream surface of the thickened portion 18 at the lower part of the door body 17 with an elongated steel plate having a width approximately equal to the sum of the thickness of the watertight rubber 12 serving as the connecting plate and the presser plate 20. Welding is performed in a direction parallel to the semicircular portion 37 at the lower end of the portion 18.
[0019]
In addition, in the area above the lateral rib 41 on the upstream surface of the door body 17 and the lower thickened portion 18, an elongated steel plate having an appropriate width is applied to the surface in order to strengthen the bending rigidity in the height direction of the door body 17. A vertical rib 42 is formed by welding at an appropriate interval in a direction perpendicular to the horizontal rib 41 in a posture perpendicular to the horizontal rib 41. Since the direction in which the vertical ribs 42 are attached is parallel to the direction of flow when water overflows over the door body 17, the vertical ribs 42 do not hinder the flow of water, gravel, or the like.
[0020]
On the other hand, since the horizontal rib 41 is attached in a direction perpendicular to the vertical rib 42, the direction of the horizontal rib 41 is a direction that hinders the flow of water, gravel, etc., but the height of the horizontal rib 41 is the watertight rubber 12 serving as the connecting plate and the presser plate. Since it is about the sum of 20 thicknesses, it is within the range of dimensions necessary to ensure the function of the undulating gate.
On the contrary, the lateral rib 41 has an effect of preventing the connecting plate / watertight rubber 12 together with the presser plates 14, 16, 20 from being damaged by the flowing stones or rocks.
[0021]
As shown in FIG. 5, when the air is discharged, the size of the open side of the air bag 4 manufactured to be a flat rectangle is slightly smaller than the gate width, and in the direction perpendicular to this, the air bag 4 is expanded. The door body 17 has a size sufficient to push up the door body 17.
The rubberized cloth is continuously bent and closed on three sides other than the open side to be pressed by the main pressing plate 3. Further, in the open side, there is a folded portion 7 of the reinforcing fiber which is protected by the resin rod 6 so that the bending radius of the reinforcing fiber is not too small at the end of the edge 5 of the two rubberized cloths facing each other. . Further, a hole 43 through which the anchor bolt 2 passes in parallel with the folded portion 7 passes through the edges 5 of the two rubberized cloths. A base 44 is attached near the center of the rubberized cloth below the air bag 4.
[0022]
With this configuration, the air pipe 45 connected to the base 44 at the bottom of the air bag 4 is guided to the land by burying it in the concrete of the water channel, and the exhaust on-off valve 46 of the air operating device, the exhaust flow rate adjustment As shown in FIG. 1, FIG. 2 and FIG. 3, the valve 47, the exhaust discharge part 48, the air supply on / off valve 49, the air supply flow rate adjustment valve 50, and the air compressor 51 are connected.
[0023]
Then, as a result of press-fitting air from the air compressor 51 through the air supply flow rate adjustment valve 50, the air supply on-off valve 49, the air pipe 45, and the base 44, the door body 17 rises. FIG. 2 is a cross-sectional view of this state, and the bent portion 35 of the head of the door body 17 functions so as to guide the overflowing water downstream and not hit the air bag 4 or the belt 28.
FIG. 1 shows this state viewed from the downstream side, and the air bag 4 is on the back side of the door body 17 and supports the door body 17 in almost the entire width.
[0024]
On the other hand, the air compressor 51 is stopped, the air supply on-off valve 49 is closed, the exhaust on-off valve 46 is opened, and the air having the pressure inside the air bag 4 is controlled by the exhaust flow control valve 47. FIG. 3 is a cross-sectional view of the state in which the door body 17 is completely laid down as a result of being released from the exhaust emission part 48 into the atmosphere.
In this state, since earth and sand may flow down the bottom of the water channel, the water stop 11 installed on the foundation concrete 10 immediately upstream along the main pressing plate 3 functions to reinforce the head of the foundation concrete 10. To have.
[0025]
6, FIG. 7, FIG. 8 and FIG. 9 show another embodiment of the undulating gate according to the present invention. FIG. 6 is a sectional view of the undulating gate and shows a standing state, and FIG. 7 is a sectional view of the undulating gate. FIG. 8 is an explanatory view of a door body and a main pressing plate with a bearing, and FIG. 9 is an explanatory view of an air bag.
[0026]
6 and 7, a bolt 63 screwed into a row of vertical female screws 62 provided on an anchor hardware 61 installed across the water channel at the bottom of the water channel having a rectangular cross section is provided downstream of the bearing main pressing plate 60. By pressing the edge 5 of the open side of the air bag 4 against the convex portion 65 on the downstream side of the anchor hardware 61 by the convex portion 64 on the side, the open side of the air bag 4 is sealed and at the same time the air bag 4 is Fix to the anchor hardware 61.
At the end of the edge 5 of the open side of the air bag 4 is a reinforcing fiber folded portion 7 protected by a resin rod 6 so that the bending radius of the reinforcing fiber is not too small. The edge 5 of the open side of the air bag 4 acts on the air bag 4 in contact with the upstream corner 66 of the convex portion 64 on the downstream side of 60 and the upstream corner 67 of the convex portion 65 on the downstream side of the anchor hardware 61. Functions so as not to be pulled out by tension.
[0027]
When pressing the bearing main pressing plate 60 with the bolt 63, the convex portion 68 at the upstream end thereof is supported by the convex portion 69 at the upstream side of the anchor hardware 61, and the main pressing plate 60 with the bearing is screwed as the bolt 63 is screwed. Since the convex part 64 on the downstream side presses the edge 5 of the open side of the air bag 4 more strongly, the open side of the air bag 4 is surely sealed and fixed.
Further, the bearing 70 protruding from the downstream edge of the main pressing plate 60 with bearing is combined with the rotary shaft 72 in the concave portion 71 at the lower end of the thickened portion 18 at the lower portion of the door body 17, and at the same time the thickened portion at the lower portion of the door body 17. Since the bearing 73 protruding from the lower end of the shaft 18 is combined with the rotary shaft 72 in the recess 74 at the downstream edge of the bearing-equipped main pressing plate 60, the door body 17 is free to rotate with respect to the bearing-equipped main pressing plate 60 and can stand up freely. You can surrender.
[0028]
On the other hand, one side of the lower watertight rubber plate 75 is fixed to the upper surface of the water stop portion 78 of the anchor metal 61 by the presser plate 76 and the bolt 77, and the other side is fixed to the door body by the presser plate 79 and the bolt 80. 17 is fixed below the lateral rib 41 on the upstream surface of the thickened portion 18 at the lower portion of 17 and, at the same time, is fixed to the upper surface of the main pressing plate 60 with bearings by a pressing plate 81 and a bolt 82, thereby Water leakage between the installed anchor hardware 61 and the thickened portion 18 below the door body 17 is prevented.
In addition, a belt 28 made of rubberized cloth having a sufficient strength and having one end fixed to the upper surface 25 of the concrete with an anchor bolt 26 and a holding plate 27 installed at an appropriate position downstream of the air bag 4 at the bottom of the water channel. When the door body 17 stands up to a predetermined posture by fixing the end of the door body 17 to an appropriate position above the position where the air bag 4 contacts the downstream surface of the door body 17 with the bolt 29 and the presser plate 30, The door body 17 is stopped by the tension acting on the belt 28.
[0029]
Next, when the head bending portion 35 of the door body 17 is raised, the water flowing over the door body 17 is guided downstream and then dropped, so that the overflowing water, the flutes and driftwood flowing down together, etc. Protect the air bag 4 and the belt 28 from being hit directly. Further, at the time of lying down, the tip of the bending portion 35 at the head of the door body 17 is supported by the support hardware 36 to secure a necessary space between the upper surface 25 of the concrete and the door body 17. 28 is not crushed by the door body 17.
[0030]
Further, the lateral rib 41 is welded along the attachment portion of the lower end watertight rubber plate 75 on the upstream surface of the thickened portion 18 below the door body 17. The lateral rib 41 is an elongated steel plate having a width approximately equal to the sum of the thicknesses of the rubber plate 75 and the presser plate 79, and a direction perpendicular to the upstream surface of the thickened portion 18 at the lower portion of the door body 17 and in a direction parallel to the rotary shaft 72. Is provided.
Further, in the area above the lateral rib 41 on the upstream surface of the door body 17 and the lower thickened portion 18, an elongated steel plate having an appropriate width is perpendicular to the surface in order to enhance the bending rigidity in the height direction of the door body 17. The vertical ribs 42 are welded and attached at appropriate intervals in a direction orthogonal to the horizontal ribs 41 in this posture.
Since the direction in which the vertical ribs 42 are attached is parallel to the flow of water that flows over the door body 17, the vertical ribs 42 do not hinder the flow of water or gravel.
[0031]
FIG. 8 shows the positional relationship between the thickened portion 18, the bent portion 35, the lateral rib 41, the longitudinal rib 42, the bearing 73, and the recessed portion 71 of the door body 17, and at the same time, the rotary shaft 72 seems to be mutually rotatable. The relationship between the bearing-attached main pressing plate 60 and the bearing 70, the concave portion 74, the upstream convex portion 68, the downstream convex portion 64 and the upstream corner 66 of the main pressing plate 60 with bearing is shown. ing.
Further, an internal thread 83 aligned with a bolt 82 for fixing the rubber plate 75 is arranged on the upstream edge of the upper surface of the bearing main pressing plate 60, and a counterbored hole 84 corresponding to the bolt 63 is parallel to the downstream side. Are lined up.
Further, the thickened portion 18 at the lower part of the door body 17 has a female screw 85 in alignment with the bolt 80 for fixing the rubber plate 75 at a position along the lateral rib 41, and a bolt 29 for fixing the belt 28 above the door body 17. There are bolt holes 86 tailored to the above.
FIG. 9 is an explanatory diagram of the air bag 4 in this embodiment. In this embodiment, since the bolt 63 for pressing the main pressing plate 60 with bearing does not penetrate the air bag 4, it is not necessary to make a hole in the edge 5 of the open side, and thus sealing is more reliable and advantageous.
[0032]
With this configuration, the air pipe 45 connected to the base 44 at the bottom of the air bag 4 is guided to the land by burying it in the concrete of the water channel, and the exhaust on-off valve 46 of the air operating device, the exhaust flow rate adjustment 6 and 7 are connected to the valve 47, the exhaust discharge section 48, the supply opening / closing valve 49, the supply flow control valve 50, and the air compressor 51.
[0033]
Then, as a result of press-fitting air from the air compressor 51 through the air supply flow rate adjustment valve 50, the air supply on-off valve 49, the air pipe 45, and the base 44, the door body 17 rises. FIG. 6 is a cross-sectional view of this state, and the bent portion 35 of the head of the door body 17 functions so as to guide the overflowing water downstream and not hit the air bag 4 or the belt 28.
[0034]
On the other hand, the air compressor 51 is stopped, the air supply on-off valve 49 is closed, the exhaust on-off valve 46 is opened, and the air having the pressure inside the air bag 4 is controlled by the exhaust flow control valve 47. FIG. 7 is a cross-sectional view showing a state where the door body 17 is completely laid down as a result of being released from the exhaust emission part 48 into the atmosphere.
[0035]
In the pneumatic undulation gate of each of the above embodiments, the undulation gate of a wide water channel is formed by arranging the pneumatic undulation gates with a small gate width (about 6 m or less) in the extension direction of the rotation center of the door body. It is possible.
[0036]
【The invention's effect】
According to the pneumatic undulation gate of the present invention, the vertical rib 42 is provided on the upstream surface from the lower end of the thickened portion 18 to the horizontal rib 41 by providing the thickened portion 18 and the horizontal rib 41 at the lower portion of the door body 17. Therefore, it is possible to effectively enhance the bending rigidity in the height direction of the entire door body, so that the rubber plate forming the lower watertightness of the undulating gate is continuously formed on the thickened portion 18 at the lower portion of the door body 17. It is possible to fix with bolts and presser plates.
As a result, the lower watertightness of the pneumatic undulation gate is complete, and it is possible to reliably construct a pneumatic undulation gate that does not leak for a long period of time, making it easy to maintain and economical, and the landscape of the pneumatic undulation gate. We were able to get great results in improving
[Brief description of the drawings]
FIG. 1 is a rear view of a undulating gate according to an embodiment of the present invention in a state where the undulating gate is raised.
FIG. 2 is a cross-sectional view of a state in which a relief gate is raised.
FIG. 3 is a cross-sectional view of a state in which the undulating gate has fallen down.
FIG. 4 is an explanatory view of a door body of a undulation gate.
FIG. 5 is an explanatory diagram of an air bag according to the present invention.
FIG. 6 shows another embodiment of the undulating gate according to the present invention, and is a sectional view showing a state in which the undulating gate is raised.
FIG. 7 is a cross-sectional view of a state in which the undulation gate has fallen.
FIG. 8 is an explanatory diagram of a door body of a undulation gate.
FIG. 9 is an explanatory diagram of an air bag.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Top surface of concrete 2 Anchor bolt 3 Main pressing plate 4 Air bag 5 Edge of open side 6 Rod 7 Folding part 8,9 Corner 10 Foundation concrete 11 Water stop fitting 12 Watertight rubber combined with connecting plate 13 Bolt 14 Press plate 15 Bolt 16 Presser plate 17 Door 18 Thickened portion 19 Bolt 20 Presser plate 21 Rod 22 Folded portion 23, 24 Corner 25 Concrete upper surface 26 Anchor bolt 27 Presser plate 28 Band 29 Bolt 30 Presser plate 31 Rod 32 Turned portion 33, 34 Corner 35 Bending portion 36 Support base 37 Semicircular portion 38 Top surface 39 Female screw 40 Bolt hole 41 Horizontal rib 42 Vertical rib 43 Hole 44 Base 45 Air pipe 46 Exhaust on-off valve 47 Exhaust flow control valve 48 Exhaust discharge part 49 For air supply On-off valve 50 Supply flow control valve 51 Air compressor 60 Main pressing plate 61 with bearing 61 Anchor metal 62 Female 63 Bolt 64, 65 Convex 66, 67 Square 68, 69 Convex 70 Bearing 71 Concave 72 Rotating shaft 73 Bearing 74 Concave 75 Rubber plate 76 Press plate 77 Bolt 78 Water stop portion 79 Press plate 80 Bolt 81 Press plate 82 Bolt 83 Female thread 84 Counterbored hole 85 Female thread 86 Bolt hole

Claims

Opened side of rubber-filled air bag made of flat anchor bolt and main pressing plate installed side by side across the bottom of a channel with a rectangular cross section made into a flat rectangle with 3 sides closed and 1 side opened The air bag is fixed to the bottom of the water channel while the open side is sealed by pressing it against the bottom of the water channel, and the steel plate door body is positioned so as to follow the downstream edge of the main pressing plate on the air bag. By placing the rotation center at the time of undulation of the lower end part, the air bag is positioned and supported at the root part on the downstream side of the steel plate door body ,
If you connect the air pipe to the air bag from the air control device on land and send in compressed air, the air bag expands to raise the door body, and conversely, if air with pressure is discharged from the air bag, In the pneumatic hoisting gate where the air bag shrunk flat and the door body collapsed,
In order to enhance the bending rigidity in the height direction of the door body, an elongated steel plate with an appropriate width is attached to the lower end portion of the upstream surface of the steel plate door body except for the lower watertight rubber mounting portion, at a right angle to the upstream surface of the door body. A vertical rib is formed by welding at appropriate intervals in a direction parallel to the flow of water in the posture, and at the same time, a thin steel plate with a width approximately equal to the sum of the thickness of the lower watertight rubber and the holding plate is formed at the lower end of the vertical rib. In a posture perpendicular to the upstream surface of the door-making body and welded in a direction perpendicular to the longitudinal ribs to form lateral ribs ,
In addition, between the lower end of the steel plate door body and the appropriate position above the horizontal rib mounting position, the thickness of the steel plate is made considerably thicker than other parts so that the stress near the lower end of the vertical rib does not become extremely large. Pneumatic undulation gate characterized by doing so.

The pneumatic undulation gate according to claim 1, wherein the bolt is screwed into a vertical female screw provided side by side on an anchor hardware installed across the bottom of the water channel instead of a vertical anchor bolt installed side by side across the bottom of the water channel. The main pressing plate closes the open side by pressing the open side of the air bag made of rubberized cloth with one side open and one side open against the anchor hardware. Pneumatic undulation gate characterized by fixing the bag to the anchor hardware.

3. The pneumatic undulation gate according to claim 1 or 2, wherein the hydraulic undulation gates having a small gate width (about 6 m or less) are arranged side by side in the extending direction of the rotation center of the door body, Pneumatic undulation gate characterized by