JP3760337B2

JP3760337B2 - Inverted trapezoidal undulation gate

Info

Publication number: JP3760337B2
Application number: JP2001256609A
Authority: JP
Inventors: 章雄飯田; 祥雄飯田
Original assignee: 章雄飯田; 祥雄飯田
Priority date: 2001-08-27
Filing date: 2001-08-27
Publication date: 2006-03-29
Anticipated expiration: 2021-08-27
Also published as: JP2003064645A

Description

【０００１】
【発明の属する技術分野】
この発明は、水路の底に設けた回転軸によって鋼製の扉体を自在に起立または倒伏させることにより、水路の流水を堰上げたり、放流したりする目的で使用する鋼製の起伏ゲートに関するものである。
【０００２】
【従来の技術】
従来、鋼製起伏ゲートは、水路の底に設けた水平な回転軸によって自在に起立または倒伏する鋼製の扉体の頭部にワイヤロープやチェーンを取り付けて、これを陸上の巻上機で巻き取りまたは巻き戻すことで起伏操作をする形式のものや、同様の鋼製扉体を下流側に設けた油圧ジャッキで押し上げて起立させ、逆に油圧ジャッキを縮めて倒伏させる形式のものなどが種々開発され、使用されてきた。
【０００３】
また最近は、水路の底に固定したゴム引布で繋留した鋼板製の扉体を、下流側の根元に設置した筒状の空気袋で支持し、空気袋を膨張させて扉体を起立させ、逆に空気袋を収縮させて扉体を倒伏させる形式のものも使用されるようになった。この形式の鋼製起伏ゲートにおいては、機構としての回転軸と軸受は設けないが、扉体の下端付近を回転中心として扉体が回転運動を行なう結果、起立または倒伏するものである。これらの鋼製起伏ゲートの扉体は水路の底に水平な回転中心を有する回転運動を行なって起立または倒伏するものであり、扉体の側端部は鉛直な面に沿って移動する。したがって、鋼製起伏ゲートを設置する水路の断面形は長方形であり、水路の側壁は鉛直面である。
【０００４】
【発明が解決しようとする課題】
しかし河川等では逆台形の断面が多く、水路の側壁は傾斜していることが多いのである。このような断面が逆台形の河川や水路に鋼製起伏ゲートを設置する場合には、起伏ゲートの設置箇所の断面を長方形として、その上流ならびに下流には長方形から逆台形に緩やかに変化する複雑な断面形状を使用する。
【０００５】
そのため工事は困難度を増し、工事費が多額となる。また洪水時には、この断面形状の変化する部分で水流が激しく乱れて護岸などに被害を及ぼす危険も増大する。
【０００６】
【課題を解決するための手段】
この発明の起伏ゲートは、以上のように多種多様な形式が開発され、優れた性能を有する鋼製起伏ゲートの設置可能な水路の断面形状が長方形に限られるという技術上の問題を解決し、断面形状が逆台形の水路においても使用が可能な鋼製起伏ゲートを提供しようとするものである。
【０００７】
すなわち、断面が逆台形の水路の中央部の深さが一定の部分に水路底を横断する水平な回転中心線と長方形の扉体と長方形の空気袋を有する主起伏ゲートを設置し、その両側の護岸の下端に設けた堰柱より上方の護岸の傾斜面に、この傾斜面に平行な回転中心線とほぼ３角形の形状の扉体と空気袋を有する副起伏ゲートを設置する。
【０００８】
このとき、護岸の下端に設けた堰柱の主起伏ゲート側の側面は、主起伏ゲートの扉体の起伏運動における水平な回転中心線と直交する鉛直面であり、主起伏ゲートの側面水密ゴムが接触しつつ摺動する戸当面として機能するようにする。
【０００９】
またこの堰柱の副起伏ゲート側の側面は、副起伏ゲートの扉体の起伏運動における護岸の傾斜角に平行な回転中心線と直交する傾斜面であり、副起伏ゲートの側面水密ゴムが接触しつつ摺動する戸当面として機能するようにする。このように構成した上で、陸上の空気操作装置から主起伏ゲートと副起伏ゲートの空気袋に空気管を接続し、圧縮空気を圧入すれば各空気袋が膨張して各扉体を起立させ、逆に空気を排出したときには各空気袋が縮小して各扉体を倒伏させるのである。
【００１０】
このような構成において問題点の１つは、主起伏ゲートと副起伏ゲートの扉体や空気袋の形状が一様でなく作用する水圧条件が異なるため、主起伏ゲートと副起伏ゲートが一様に同調して起立または倒伏するよう設計するのが困難なことであるが、同一の空気圧で操作した場合、起立操作時には副起伏ゲートの起立操作が先行し、倒伏操作時には副起伏ゲートの倒伏操作が遅れるので、流芥の処理においては有利である。また、水位調整や流量調整は、主起伏ゲートだけで行なうことにすれば、何の困難もないのである。
【００１１】
またもう１つの問題点は、副起伏ゲートの堰上高が変化しているために、ほぼ３角形の形状の空気袋によるほぼ３角形の形状の扉体の支持条件が複雑となり、一般には堰上高の小さいほど早く起立し遅く倒伏する傾向となることである。これに関しては、扉体頭部に閉断面を設けることにより扉体のねじれ剛性を増やしてやれば解決することができる。
【００１２】
【発明の実施の形態】
以下、この発明の逆台形水路の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。
【００１３】
図１、図２、図３、図４、図５、図６、図７、図８、図９、図１０、図１１、図１２、図１３ならびに図１４はこの発明の逆台形水路の起伏ゲートの１実施例を示すものであり、図１は逆台形水路の起伏ゲートの平面図、図２は背面図、図３は主起伏ゲートの断面図、図４は副起伏ゲートの断面図でともに起立状態を示し、図５は逆台形水路の起伏ゲートの平面図、図６は背面図、図７は主起伏ゲートの断面図、図８は副起伏ゲートの断面図でともに倒伏状態を示し、図９は起立状態の主起伏ゲートの断面詳細図、図１０は倒伏状態の主起伏ゲートの断面詳細図、図１１は主起伏ゲートの扉体の説明図、図１２は主起伏ゲートの空気袋の説明図、図１３は副起伏ゲートの扉体の説明図、図１４は副起伏ゲートの空気袋の説明図である。
【００１４】
図１、図２、図３、図４、図５、図６、図７ならびに図８において、断面が逆台形の水路の中央部の深さが一定の部分の水路底１を横断して設置した１列のアンカーボルト２と軸受兼用押え板３によって水路底１に起伏自在に設置した鋼板製の長方形の扉体４の下流側の根元部分に、空気を排出したとき平らな長方形に縮小する３辺が閉じ１辺が開いた空気袋５の開いた辺の縁６をアンカーボルト２と軸受兼用押え板３によって水路底１に押え付けることによって空気袋５の開いた辺を密閉すると同時に固定して主起伏ゲートとする。さらに１枚のゴム板７の１辺を軸受兼用押え板３の上面に固定し、他の辺を扉体４の下部の上流面に固定することにより軸受兼用押え板３と扉体４の間の漏水を防止する。
【００１５】
加えて、水路の底の空気袋５より下流の適当な位置に設けたアンカーボルト８で一端を固定した十分な強度を有するゴム引布製の帯９の他端を扉体４の下流面の空気袋５の接触する位置より上の適当な位置に固定することにより扉体４が所定位置まで起立したときには、この帯９に作用する張力により扉体４が停止するようにする。
【００１６】
このように構成した主起伏ゲートの両側の護岸の下端に設けた堰柱１０より上方の護岸の傾斜面１１を横断して設置した１列のアンカーボルト１２と軸受兼用押え板１３によって護岸の傾斜面１１に起伏自在に設置した鋼板製のほぼ３角形の形状の扉体１４の下流側の根元部分に、空気を排出したとき平らなほぼ３角形の形状に縮小する３辺が閉じ１辺が開いた空気袋１５の開いた辺の縁１６をアンカーボルト１２と軸受兼用押え板１３によって護岸の傾斜面１１に押え付けることによって空気袋１５の開いた辺を密閉すると同時に固定して副起伏ゲートとする。
【００１７】
さらに１枚のゴム板１７の１辺を軸受兼用押え板１３の上面に固定し、他の辺を扉体１４の下部の上流面に固定することにより、軸受兼用押え板３と扉体１４の間の漏水を防止する。加えて、護岸の傾斜面１１の空気袋１５より下流の適当な位置に設けたアンカーボルト１８で一端を固定した十分な強度を有するゴム引布製の帯１９の他端を扉体１４の下流面の空気袋１５の接触する位置より上の適当な位置に固定することにより扉体１４が所定位置まで起立したときには、この帯１９に作用する張力により扉体１４が停止するようにする。
【００１８】
一方、護岸の下端に設けた堰柱１０の主起伏ゲートの側の側面２０は、主起伏ゲートの扉体４の起伏運動における水平な回転中心線と直交する鉛直面であり、主起伏ゲートの扉体４の側端部に取り付けた側面水密ゴムが接触しつつ摺動する戸当面として機能する。また堰柱１０の副起伏ゲート側の側面２１は、副起伏ゲートの扉体１４の起伏運動における護岸の傾斜面１１に平行な回転中心線と直交する傾斜面であり、副起伏ゲートの扉体１４の側端部に取り付けた側面水密ゴムが接触しつつ摺動する戸当面として機能する。
【００１９】
この発明の逆台形水路の起伏ゲートにおいては、主起伏ゲートの扉体４の回転中心線と副起伏ゲートの扉体１４の回転中心線の水平投影線は平行にしてある。その結果、副起伏ゲートの扉体１４の天端線は護岸の上方ほど上流側に位置することになり、流芥が主起伏ゲートの扉体４の上方に移動してから越流することが容易となって流芥の処理上有利である。
【００２０】
図１に示すごとく、起立状態における副起伏ゲートの扉体１４の天端は、主起伏ゲートの扉体４の天端より高くしてある。したがって、この逆台形の起伏ゲートを越流する水と流芥は主起伏ゲートの扉体４に集中するから、扉体４を越えた流芥が水路底１を流下する水により下流に搬送されやすくなる。
【００２１】
図９および図１０に主起伏ゲートの断面詳細図を示す。断面が逆台形の水路の中央部の深さが一定の部分の水路底１を横断して設置した１列のアンカーボルト２が軸受兼用押え板３によって、空気を排出したとき平らな長方形に縮小する３辺が閉じ１辺が開いた空気袋５の縁６を水路底１に押え付けることによって空気袋５の開いた辺を密閉すると同時に空気袋５を固定する。この空気袋５の開いた辺の縁６の端部には、樹脂製のロッド２２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２３があり、軸受兼用押え板３の上流の角２４ならびに水路底１の上流の角２５に掛かって空気袋５の開いた辺の縁６が空気袋５に作用する張力によって引抜かれないように機能する。
【００２２】
さらに、軸受兼用押え板３の下流側に突起した軸受２６が扉体４の下端の凹部２７において回転軸２８と組み合い、同時に扉体４の下端に突起した軸受２９が軸受兼用押え板３の下流側の凹部３０において回転軸２８と組み合うから扉体４は軸受兼用押え板３に対して回転自由であり、アンカーボルト２によって水路底１に起伏自在に設置される。
【００２３】
一方、１枚のゴム板７の１辺を押え板３１とボルト３２によって軸受兼用押え板３の上面に固定し、他の辺を押え板３３とボルト３４によって扉体４の下部の上流側に固定することにより軸受兼用押え板３と扉体４の間の漏水を防止する。加えて、水路底１の空気袋５より下流の適当な位置に設置したアンカーボルト８と押え板３５で一端を固定した十分な強度を有するゴム引布製の帯９の他端を扉体４の下流面の空気袋５の接触する位置より上の適当な位置にボルト３６と押え板３７で固定することにより扉体４が所定位置まで起立したときにはこの帯９に作用する張力により扉体４が停止するようにする。
【００２４】
次に扉体４の頭部の曲げ加工部３８は、起立時には扉体４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５や帯９を打たないよう保護する。また倒伏時には、扉体４の頭部の曲げ加工部３８の先端が支持台３９に支持されて、水路底１と扉体４の間に必要な空間が確保されるから、空気袋５や帯９は扉体４に押し潰されることがない。
【００２５】
図１１に示すように、軸受兼用押え板３の下流側に突起した軸受２６が扉体４の下端の凹部２７において回転軸２８と組み合い、同時に扉体４の下端に突起した軸受２９が軸受兼用押え板３の下流側の凹部３０において回転軸２８と組み合うから扉体４と軸受兼用押え板３は相互に回転自由である。また、軸受兼用押え板３にはアンカーボルト２に合わせた座ぐり付きの孔４０とゴム板７の一辺を固定するボルト３２に合わせた雌ねじ４１が設けてある。さらに扉体４にはゴム板７の他辺を固定するボルト３４に合わせた雌ねじ４２ならびに帯９の他端を固定するボルト３６に合わせた孔４３が設けてある。
【００２６】
図１２に示すように、空気を排出したときには平らな長方形に縮小するように製造された空気袋５は、開いた辺がゲート幅より少し小さな寸法であり、これと直角の方向の寸法は膨張したときに扉体４を押し起こすのに十分な寸法を有している。
【００２７】
そして軸受兼用押え板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６の端部に樹脂製のロッド２２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２３がある。さらに、この折返し部２３に平行してアンカーボルト２が貫通するための孔４４が２枚のゴム引布の縁６を貫いている。また、空気袋５の下側のゴム引布の中央付近には口金４５が取り付けられる。
【００２８】
以上が主起伏ゲートの詳細であるが、副起伏ゲートの断面詳細も図９および図１０のようになる。ただし、副起伏ゲートにあっては、回転中心線が護岸の傾斜面１１に平行に設定されるから全体が傾いており、したがって、扉体１４と空気袋１５がほぼ３角形の形状となる。すなわち、図１３に示すように軸受兼用押え板１３の下流側に突起した軸受４６が３角形の扉体１４の下端の凹部４７において回転軸４８と組み合い、同時に扉体１４の下端に突起した軸受４９が軸受兼用押え板１３の下流側の凹部５０において回転軸４８と組み合うから扉体１４と軸受兼用押え板１３とは相互に回転自由である。
【００２９】
また軸受兼用押え板１３にはアンカーボルト１２に合わせた座ぐり付きの孔５１とゴム板１７の一辺を固定するボルトに合わせた雌ねじ５２が設けてある。さらに扉体１４にはゴム板１７の他辺を固定するボルトに合わせた雌ねじ５３ならびに帯１９の他端を固定するボルトに合わせた孔５４が設けてあり、頭部には主起伏ゲートの場合と同様に曲げ加工部５５が設けてある。
【００３０】
図１４に示すように、空気を排出したときには、平らなほぼ３角形の形状に縮小するよう製造された空気袋１５は、開いた辺がゲート幅より少し小さい寸法であり、これと直角方向は膨張したときに扉体１４を押し起こすのに必要な寸法を有するように定めるからほぼ３角形の寸法となっている。そして、軸受兼用押え板１３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１６の端部に樹脂製のロッド５６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５７がある。さらに、この折返し部５７に平行してアンカーボルト１２が貫通するための孔５８が２枚のゴム引布を貫いている。また空気袋１５の下側の中央付近には口金４５が取り付けられている。
【００３１】
主起伏ゲートと副起伏ゲートをこのように構成した上で、空気袋５と空気袋１５の下側に設けた口金４５に接続した空気管５９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６０、排気用流量調整弁６１、排気放出部６２、給気用開閉弁６３、給気用流量調整弁６４、空気圧縮機６５に図９および図１０のように接続する。
【００３２】
その上で、空気圧縮機６５から給気用流量調整弁６４、給気用開閉弁６３、空気管５９を経由して空気袋５と空気袋１５の内部に空気を圧入した結果、扉体４と扉体１４が起立した状態の断面図が図３、図４および図９である。
【００３３】
この状態を下流側から見たのが図２であり、逆台形水路の中央部の主起伏ゲートの扉体４の背面のほぼ全幅に空気袋５が位置して扉体４を支持し、その両側の護岸の傾斜面上の副起伏ゲートの３角形の扉体１４の背面のほぼ全幅に３角形の空気袋５が位置して扉体１４を支持している。
【００３４】
また、空気圧縮機６５を停止し、給気用開閉弁６３を閉じ、排気用開閉弁６０を開いて、空気袋５と空気袋１５の内部の圧力を有する空気を排気用流量調整弁６１によって制御しつつ、排気放出部６２から大気中へ放出した結果、扉体４と扉体１４が倒伏した状態の断面図が図７、図８および図１０である。この状態を下流側から見たのが図６であり、主起伏ゲートの扉体４は水路底１に完全に倒伏し、同時に副起伏ゲートの扉体１４は護岸の傾斜面１１に完全に倒伏しているから、逆台形水路の断面は堰柱１０を残して開放されている。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、軸受兼用押え板の直ぐ上流の水路底６６の落差部には補強のため山形鋼６７を設ける。
【００３５】
図１５、図１６、図１７、図１８、図１９、図２０、図２１、図２２、図２３、図２４、図２５、図２６、図２７ならびに図２８はこの発明の逆台形水路の起伏ゲートの他の実施例を示すものであり、図１５は逆台形水路の起伏ゲートの平面図、図１６は背面図、図１７は主起伏ゲートの断面図、図１８は副起伏ゲートの断面図でともに起立状態を示し、図１９は逆台形水路の起伏ゲートの平面図、図２０は背面図、図２１は主起伏ゲートの断面図、図２２は副起伏ゲートの断面図でともに倒伏状態を示し、図２３は起立状態の主起伏ゲートの断面詳細図、図２４は倒伏状態の主起伏ゲートの断面詳細図、図２５は主起伏ゲートの扉体の説明図、図２６は主起伏ゲートの空気袋の説明図、図２７は副起伏ゲートの扉体の説明図、図２８は副起伏ゲートの空気袋の説明図である。
【００３６】
図１５、図１６、図１７、図１８、図１９、図２０、図２１ならびに図２２において、断面が逆台形の水路の中央部の深さが一定の部分の水路底１０１を横断して設置した１列のアンカーボルト１０２と固定台兼用押え板１０３、ならびに固定台兼用押え板１０３の上面に強固に固定したゴム引布製の繋ぎ板１０４とによって水路底１０１に起伏自在に設置した鋼板製の長方形の扉体１０５の下流側の根元部分に、空気を排出したとき平らな長方形に縮小する３辺が閉じ１辺が開いた空気袋１０６の開いた辺の縁１０７をアンカーボルト１０２と固定台兼用押え板１０３によって水路底１０１に押え付けることによって空気袋１０６の開いた辺を密閉すると同時に固定して主起伏ゲートとする。このとき、ゴム引布製の繋ぎ板１０４は１辺を固定台兼用押え板１０３の上面に固定され、他の辺を扉体１０５の下部の上流面に固定されているから、扉体１０５を水路底１０１に起伏自在に繋留すると同時に固定台兼用押え板１０３と扉体１０５との間の漏水を防止する。加えて、水路底１０１の空気袋１０６より下流の適当な位置に設けたアンカーボルト１０８で一端を固定した十分な強度を有するゴム引布製の帯１０９の他端を扉体１０５の下流面の空気袋１０６の接触する位置より上の適当な位置に固定することにより扉体１０５が所定位置まで起立したときには、この帯１０９に作用する張力により扉体１０５が停止するようにする。
【００３７】
このように構成した主起伏ゲートの両側の護岸の下端に設けた堰柱１１０より上方の護岸の傾斜面１１１を横断して設置した１列のアンカーボルト１１２と、固定台兼用押え板１１３、ならびに固定台兼用押え板１１３の上面に強固に固定したゴム引布製の繋ぎ板１１４とによって護岸の傾斜面１１１に起伏自在に設置した鋼板製のほぼ３角形の形状の扉体１１５の下流側の根元部分に、空気を排出したとき平らなほぼ３角形の形状に縮小する２辺が閉じ１辺が開いた空気袋１１６の開いた辺の縁１１７をアンカーボルト１１２と固定台兼用押え板１１３によって護岸の傾斜面１１１に押え付けることによって空気袋１１６の開いた辺を密閉すると同時に固定して副起伏ゲートとする。
【００３８】
このときゴム引布製の繋ぎ板１１４は、１辺を固定台兼用押え板１１３の上面に固定され、他の辺を扉体１１５の下部の上流面に固定されているから、扉体１１５を護岸の傾斜面１１１に起伏自在に繋留すると同時に、固定台兼用押え板１１３と扉体１１５の間の漏水を防止する。加えて、護岸の傾斜面１１１の空気袋１１６より下流の適当な位置に設けたアンカーボルト１１８で一端を固定した十分な強度を有するゴム引布製の帯１１９の他端を扉体１１５の下流面の空気袋１１６が接触する位置より上の適当な位置に固定することにより扉体１１５が所定位置まで起立したときには、この帯１１９に作用する張力により扉体１１５が停止するようにする。
【００３９】
一方、護岸の下端に設けた堰柱１１０の主起伏ゲートの側の側面１２０は主起伏ゲートの扉体１０５の起伏運動における水平な回転中心線と直交する鉛直面であり、主起伏ゲートの扉体１０５の側端部に取り付けた側面水密ゴムが接触しつつ摺動する戸当面として機能する。
【００４０】
他方、堰柱１１０の副起伏ゲートの側の側面１２１は副起伏ゲートの扉体１１５の起伏運動における護岸の傾斜面１１１に平行な回転中心線と直交する傾斜面であり、副起伏ゲートの扉体１１５の側端部に取り付けた側面水密ゴムが接触しつつ摺動する戸当面として機能する。
【００４１】
この実施例の逆台形水路の起伏ゲートにおいては、主起伏ゲートの扉体１０５の回転中心線と副起伏ゲートの扉体１１５の回転中心線の水平投影線とは平行ではなく、護岸の上部ほど副起伏ゲートの扉体１１５の回転中心線の水平投影線は主起伏ゲートの扉体１０５の回転中心線より下流側に離れるようにしてある。その結果、護岸の下端に設けた堰柱１１０の副起伏ゲートの側の側面１２１と護岸の傾斜面１１１とが交叉する線は下流ほど低くなっている。このことは副起伏ゲートの扉体１１５を越流する水や流芥が堰柱１１０より下流方向に流れやすい特徴を有することになる。
【００４２】
図１６に示すごとく、起立状態における副起伏ゲートの扉体１１５の天端は、主起伏ゲートの扉体１０５の天端より高くしてある。したがって、この逆台形の起伏ゲートを越流する水と流芥は主起伏ゲートの扉体１０５の上に集中するから、扉体１０５を越えた流芥が水路底１０１を流下する水により下流に搬送されやすくなる。
【００４３】
図２３および図２４に主起伏ゲートの断面詳細図を示す。断面が逆台形の水路の中央部の深さが一定の部分の水路底１０１を横断して設置した１列のアンカーボルト１０２が固定台兼用押え板１０３によって、空気を排出したとき平らな長方形に縮小する３辺が閉じ１辺が開いたゴム引布製の空気袋１０６の開いた辺の縁１０７を水路底１０１に押え付けることによって空気袋１０６の開いた辺を密閉すると同時に水路底１０１に固定する。この空気袋１０６の開いた辺の縁１０７の端部には、樹脂製のロッド１２２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１２３があり、固定台兼用押え板１０３の上流の角１２４ならびに水路底１０１の上流の角１２５に掛かって空気袋１０６の開いた辺の縁１０７が空気袋１０６に作用する張力によって引抜かれないように機能する。
【００４４】
次に、固定台兼用押え板１０３の上面に十分な強度を有するゴム引布製の繋ぎ板１０４の一辺をボルト１２６と押え板１２７とによって強固に固定し、他の辺を鋼板製の扉体１０５の下部の上流面にボルト１２８と押え板１２９により強固に固定することによって鋼板製の扉体１０５を固定台兼用押え板１０３に起伏自在に繋留すると同時に両者間の漏水を防止する。
【００４５】
この繋ぎ板１０４の端部には樹脂製のロッド１３０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１３１があり、固定台兼用押え板１０３の上流の角１３２ならびに押え板１２９の角１３３に掛かって作用する張力によって繋ぎ板１０４が所定の位置から引抜かれないようにする。
【００４６】
さらに、水路底１０１の空気袋１０６より下流の適当な位置に設置したアンカーボルト１０８と押え板１３４で一端を水路底１０１に固定した十分な強度を有するゴム引布製の帯１０９の他端を扉体１０５の下流面の空気袋１０６の接触する位置より上の適当な位置にボルト１３５と押え板１３６で固定することにより、扉体１０５が所定位置まで起立したときにはこの帯１０９に作用する張力により扉体１０５が停止するようにする。この帯１０９においてもその端部には樹脂製のロッド１３７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１３８があり、押え板１３４の角１３９ならびに押え板１３６の角１４０に掛かって作用する張力によって帯１０９が所定の位置から引抜かれないようにする。
【００４７】
次に扉体１０５の頭部の曲げ加工部１４１は、起立時には扉体１０５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１０６や帯１０９を打たないよう保護する。また倒伏時には、扉体１０５の頭部の曲げ加工部１４１の先端が支持台１４２に支持されて、水路底１０１と扉体１０５の間に必要な空間が確保されるから、空気袋１０６や帯１０９は扉体１０５に押し潰されることがない。
【００４８】
図２５に示すように、鋼板製の扉体１０５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１０５の頭部には曲げ加工部１４１が形成されると同時に下端には固定台兼用押え板１０３の厚さとほぼ等しい直径の丸棒鋼１４３を溶接取付けして扉体１０５が起伏運動をするに際して扉体１０５の下端が空気袋１０６の上面１４４を滑りやすくする。また、鋼板製の扉体１０５の丸棒鋼１４３に沿う部分には繋ぎ板１０４を固定するボルト１２８をねじ込む雌ねじ１４５が１列に並んでおり、その上方には帯１０９を固定するボルト１３５に合わせた孔１４６がある。
【００４９】
図２６に示すように、空気を排出したときには平らな長方形に縮小するように製造された空気袋１０６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１０５を押し起こすのに十分な寸法を有している。
【００５０】
そして固定台兼用押え板１０３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１０７の端部に樹脂製のロッド１２２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１２３がある。さらに、この折返し部１２３に平行してアンカーボルト１０２が貫通するための孔１４７が２枚のゴム引布の縁１０７を貫いている。また、空気袋１０６の下側のゴム引布の中央付近には口金１４８が取り付けられる。
【００５１】
以上が主起伏ゲートの詳細であるが、副起伏ゲートの断面詳細も図２３および図２４のようになる。ただし、副起伏ゲートにあっては、扉体１１５の回転中心線が護岸の傾斜面１１１に平行に設定されるから全体が傾いている。したがって、扉体１１５と空気袋１１６とはほぼ３角形の形状となる。すなわち、図２７に示すように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るが、護岸の上方ほど小さくなり、全体の形状は３角形に近い形状となる。この鋼板製の扉体１１５の頭部には曲げ加工部１４９が形成されると同時に下端には固定台兼用押え板１１３の厚さとほぼ等しい直径の丸棒鋼１５０を溶接取付けして扉体１１５が起伏運動をするに際して扉体１１５の下端が空気袋１１６の上面１５１を滑りやすくする。
【００５２】
また、鋼板製の扉体１１５の丸棒鋼１５０に沿う部分には繋ぎ板１１４を固定するボルト１２８をねじ込む雌ねじ１５２が１列に並んでおり、その上方には帯１１９の他端を固定するボルトに合わせた孔１５３が設けてある。
【００５３】
図２８に示すように、空気を排出したときには、平らなほぼ３角形の形状に縮小するよう製造された空気袋１１６は、開いた辺がゲート幅より少し小さい寸法であり、これと直角方向は膨張したときに扉体１１５を押し起こすのに必要な寸法を有するように定めるからほぼ３角形に近い形状となる。そして、固定台兼用押え板１１３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１１６の端部に樹脂製のロッド１５４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１５５がある。さらに、この折返し部１５５に平行してアンカーボルト１１２が貫通するための孔１５６が２枚のゴム引布を貫いている。また空気袋１１６の下側の中央付近には口金１４８が取り付けられる。
【００５４】
主起伏ゲートと副起伏ゲートをこのように構成した上で、空気袋１０６と空気袋１１６の下側に取付けた口金１４８に接続した空気管５９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６０、排気用流量調整弁６１、排気放出部６２、給気用開閉弁６３、給気用流量調整弁６４、空気圧縮機６５に図２３および図２４のように接続する。
【００５５】
その上で、空気圧縮機６５から給気用流量調整弁６４、給気用開閉弁６３、空気管５９を経由して空気袋１０６と空気袋１１６の内部に空気を圧入した結果、扉体１０５と扉体１１５が起立した状態の断面図が図１７、図１８および図２３である。
【００５６】
この状態を下流側から見たのが図１６であり、逆台形水路の中央部の主起伏ゲートの扉体１０５の背面のほぼ全幅に空気袋１０６が位置して扉体１０５を支持し、その両側の護岸の傾斜面上の副起伏ゲートの３角形に近い形状の扉体１１５の背面のほぼ全幅に３角形に近い形状の空気袋１１６が位置して扉体１１５を支持している。
【００５７】
また、空気圧縮機６５を停止し、給気用開閉弁６３を閉じ、排気用開閉弁６０を開いて、空気袋１０６と空気袋１１６の内部の圧力を有する空気を排気用流量調整弁６１によって制御しつつ、排気放出部６２から大気中へ放出した結果、扉体１０５と扉体１１５が倒伏した状態の断面図が図２１、図２２および図２４である。
【００５８】
この状態を下流側から見たのが図２０であり、主起伏ゲートの扉体１０５は水路底１０１に完全に倒伏し、同時に副起伏ゲートの扉体１１５は護岸の傾斜面１１１に完全に倒伏しているから、逆台形水路の断面は堰柱１１０を残して開放されている。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、固定台兼用押え板の直ぐ上流の水路底６６の落差部には補強のため山形鋼６７を設ける。
【００５９】
【発明の効果】
この発明の逆台形水路の起伏ゲートによれば、従来、長方形断面の水路にのみ設置可能であった鋼板製扉体を有する起伏ゲートを、逆台形断面の水路にも、大規模な水路断面の変化を伴うことなく設置することが可能となった。
【００６０】
その結果、ゲート据付け箇所のコンクリート構造物が小型化し、形状も簡単となって工事費を軽減することが可能となった。特に、護岸の傾斜が緩やかな逆台形水路において、その経済効果が著しい。
【図面の簡単な説明】
【図１】この発明の逆台形水路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平面図である。
【図２】起伏ゲートが起立した状態の背面図である。
【図３】主起伏ゲートが起立した状態の断面図である。
【図４】副起伏ゲートが起立した状態の断面図である。
【図５】起伏ゲートが倒伏した状態の平面図である。
【図６】起伏ゲートが倒伏した状態の背面図である。
【図７】主起伏ゲートが倒伏した状態の断面図である。
【図８】副起伏ゲートが倒伏した状態の断面図である。
【図９】主起伏ゲートが起立した状態の断面詳細図である。
【図１０】主起伏ゲートが倒伏した状態の断面詳細図である。
【図１１】主起伏ゲートの扉体の説明図である。
【図１２】主起伏ゲートの空気袋の説明図である。
【図１３】副起伏ゲートの扉体の説明図である。
【図１４】副起伏ゲートの空気袋の説明図である。
【図１５】この発明の逆台形水路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平面図である。
【図１６】起伏ゲートが起立した状態の背面図である。
【図１７】主起伏ゲートが起立した状態の断面図である。
【図１８】副起伏ゲートが起立した状態の断面図である。
【図１９】起伏ゲートが倒伏した状態の平面図である。
【図２０】起伏ゲートが倒伏した状態の背面図である。
【図２１】主起伏ゲートが倒伏した状態の断面図である。
【図２２】副起伏ゲートが倒伏した状態の断面図である。
【図２３】主起伏ゲートが起立した状態の断面詳細図である。
【図２４】主起伏ゲートが倒伏した状態の断面詳細図である。
【図２５】主起伏ゲートの扉体の説明図である。
【図２６】主起伏ゲートの空気袋の説明図である。
【図２７】副起伏ゲートの扉体の説明図である。
【図２８】副起伏ゲートの空気袋の説明図である。
【符号の説明】
１水路底
２アンカーボルト
３軸受兼用押え板
４扉体
５空気袋
６縁
７ゴム板
８アンカーボルト
９帯
１０堰柱
１１護岸の傾斜面
１２アンカーボルト
１３軸受兼用押え板
１４扉体
１５空気袋
１６縁
１７ゴム板
１８アンカーボルト
１９帯
２０側面
２２ロッド
２３折返し部
２４角
２５角
２６軸受
２７凹部
２８回転軸
２９軸受
３０凹部
３１押え板
３２ボルト
３３押え板
３４ボルト
３５押え板
３６ボルト
３７押え板
３８曲げ加工部
３９支持台
４０孔
４１雌ねじ
４２雌ねじ
４３孔
４４孔
４５口金
４６軸受
４７凹部
４８回転軸
４９軸受
５０凹部
５１孔
５２雌ねじ
５３雌ねじ
５４孔
５５曲げ加工部
５６ロッド
５７折返し部
５８孔
５９空気管
６０排気用開閉弁
６１排気用流量調整弁
６２排気放出部
６３給気用開閉弁
６４給気用流量調整弁
６５空気圧縮機
６６水路底
６７山形鋼
１０１水路底
１０２アンカーボルト
１０３固定台兼用押え板
１０４繋ぎ板
１０５扉体
１０６空気袋
１０７縁
１０８アンカーボルト
１０９帯
１１０堰柱
１１１護岸の傾斜面
１１２アンカーボルト
１１３固定台兼用押え板
１１４繋ぎ板
１１５扉体
１１６空気袋
１１７縁
１１８アンカーボルト
１１９帯
１２０側面
１２１側面
１２２ロッド
１２３折返し部
１２４角
１２５角
１２６ボルト
１２７押え板
１２８ボルト
１２９押え板
１３０ロッド
１３１折返し部
１３２角
１３３角
１３４押え板
１３５ボルト
１３６押え板
１３７ロッド
１３８折返し部
１３９角
１４０角
１４１曲げ加工部
１４２支持台
１４３丸棒鋼
１４４上面
１４５雌ねじ
１４６孔
１４７孔
１４８口金
１４９曲げ加工部
１５０丸棒鋼
１５１上面
１５２雌ねじ
１５３孔
１５４ロッド
１５５折返し部
１５６孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steel hoisting gate used for the purpose of raising or discharging water flowing in a waterway by freely raising or lowering a steel door body by a rotating shaft provided at the bottom of the waterway. Is.
[0002]
[Prior art]
Conventionally, steel hoisting gates have been installed on land hoisting machines by attaching a wire rope or chain to the head of a steel door that stands up or falls freely by a horizontal rotating shaft provided at the bottom of the waterway. There is a type that makes ups and downs by winding or rewinding, a type that pushes up a similar steel door body with a hydraulic jack provided on the downstream side, and conversely shrinks the hydraulic jack and falls down Various types have been developed and used.
[0003]
Recently, a steel plate door anchored by a rubberized cloth fixed to the bottom of the water channel is supported by a cylindrical air bag installed at the base of the downstream side, and the air bag is inflated to raise the door body. On the other hand, the type that collapses the air bag and falls the door body is also used. In this type of steel undulation gate, a rotating shaft and a bearing as a mechanism are not provided, but as a result of the door body rotating around the lower end of the door body, it rises or falls. The door bodies of these steel undulation gates rise or fall by performing a rotational movement having a horizontal rotation center at the bottom of the water channel, and the side ends of the door bodies move along a vertical plane. Therefore, the cross-sectional shape of the water channel in which the steel undulation gate is installed is a rectangle, and the side wall of the water channel is a vertical surface.
[0004]
[Problems to be solved by the invention]
However, rivers have many inverted trapezoidal cross sections, and the side walls of waterways are often inclined. When installing steel undulation gates in rivers and waterways with such inverted trapezoidal cross sections, the cross section of the undulation gate installation area is rectangular, and the upstream and downstream are complicated to gradually change from rectangular to inverted trapezoidal. Use a simple cross-sectional shape.
[0005]
As a result, the construction becomes more difficult and the construction costs are large. In addition, during floods, the risk of damaging the revetment is increased because the water flow is violently disturbed at the part where the cross-sectional shape changes.
[0006]
[Means for Solving the Problems]
The undulation gate of the present invention has been developed in a variety of forms as described above, solving the technical problem that the cross-sectional shape of the water channel where the steel undulation gate having excellent performance can be installed is limited to a rectangle, It is an object of the present invention to provide a steel undulation gate that can be used even in a water channel having an inverted trapezoidal cross section.
[0007]
That is, a main undulation gate having a horizontal rotation center line, a rectangular door, and a rectangular air bag that crosses the bottom of the water channel is installed at a constant depth at the center of the water channel having an inverted trapezoidal cross section. On the inclined surface of the revetment above the dam pillar provided at the lower end of the revetment, a sub-undulation gate having a rotation center line parallel to the inclined surface, a door body having a substantially triangular shape, and an air bag is installed.
[0008]
At this time, the side surface on the main undulation gate side of the weir column provided at the lower end of the revetment is a vertical plane perpendicular to the horizontal rotation center line in the undulation movement of the main undulation gate door body, and the side watertight rubber of the main undulation gate To function as a door-to-door sliding sliding.
[0009]
The side surface of the weir column on the side of the sub-undulation gate is an inclined surface perpendicular to the rotation center line parallel to the inclination angle of the revetment in the up-and-down movement of the door body of the sub-uplift gate. However, it should function as a sliding door. After configuring in this way, connect air pipes from the air operating device on land to the air bags of the main hoisting gate and the auxiliary hoisting gate, and press the compressed air to inflate each air bag to raise each door body. On the contrary, when air is discharged, each air bag shrinks and each door body is laid down.
[0010]
In such a configuration, one of the problems is that the main undulation gate and the sub undulation gate are uniform because the shapes of the door body and the air bag of the main undulation gate and the sub undulation gate are not uniform and the hydraulic pressure conditions are different. Although it is difficult to design to stand up or fall in sync with the air pressure, when operating at the same air pressure, the stand up operation of the sub hoisting gate precedes the stand up operation, and the sub hoisting operation of the sub hoisting gate occurs during the fall operation. This is advantageous in handling fluency. If the water level and flow rate are adjusted only by the main undulation gate, there is no difficulty.
[0011]
Another problem is that since the height of the weir of the sub-undulation gate is changed, the support condition of the door with a substantially triangular shape by the air bag with a substantially triangular shape is complicated, and generally the weir is The smaller the height, the more likely it is to stand up earlier and fall later. This can be solved if the torsional rigidity of the door body is increased by providing a closed cross section at the head of the door body.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the undulating gate of the inverted trapezoidal water channel according to the present invention will be described in detail below with reference to the drawings.
[0013]
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14 are undulations of the inverted trapezoidal channel of the present invention. FIG. 1 is a plan view of an undulating gate of an inverted trapezoidal channel, FIG. 2 is a rear view, FIG. 3 is a sectional view of a main undulating gate, and FIG. 4 is a sectional view of a sub-undulating gate. FIG. 5 is a plan view of the undulating gate of the inverted trapezoidal channel, FIG. 6 is a rear view, FIG. 7 is a cross-sectional view of the main undulating gate, and FIG. 8 is a cross-sectional view of the sub-undulating gate. 9 is a detailed sectional view of the main undulation gate in a standing state, FIG. 10 is a detailed sectional view of the main undulation gate in a lying state, FIG. 11 is an explanatory view of a door body of the main undulation gate, and FIG. FIG. 13 is an explanatory view of the door body of the sub-undulation gate, and FIG. 14 is an explanatory view of the air bag of the sub-undulation gate.
[0014]
1, 2, 3, 4, 5, 6, 7, and 8, the cross section of the inverted trapezoidal channel is installed across the channel bottom 1 at a constant depth in the center of the channel. When the air is discharged to the downstream base portion of the rectangular door body 4 made of a steel plate that can be raised and lowered on the water channel bottom 1 by the row of anchor bolts 2 and the bearing-holding presser plate 3, it is reduced to a flat rectangle. The open side of the air bag 5 is sealed and fixed by pressing the edge 6 of the open side of the air bag 5 with three sides closed and one side open to the water channel bottom 1 by means of the anchor bolt 2 and the bearing use holding plate 3. The main undulation gate. Furthermore, one side of one rubber plate 7 is fixed to the upper surface of the bearing / holding plate 3, and the other side is fixed to the upstream surface of the lower portion of the door body 4, whereby the bearing / holding plate 3 and the door body 4 are fixed. Prevent water leakage.
[0015]
In addition, the other end of the band 9 made of rubberized cloth having sufficient strength with one end fixed by an anchor bolt 8 provided at an appropriate position downstream of the air bag 5 at the bottom of the water channel is connected to the air on the downstream surface of the door body 4. When the door body 4 stands up to a predetermined position by being fixed at an appropriate position above the position where the bag 5 contacts, the door body 4 is stopped by the tension acting on the band 9.
[0016]
The slope of the revetment is formed by a row of anchor bolts 12 and a bearing-holding presser plate 13 installed across the sloped surface 11 of the revetment above the weir column 10 provided at the lower end of the revetment on both sides of the main undulation gate constructed in this way. At the base portion on the downstream side of the substantially triangular door body 14 made of a steel plate installed on the surface 11 so as to be able to undulate, the three sides which are reduced to a flat substantially triangular shape when air is discharged are closed and one side is closed. The side 16 of the open side of the open air bag 15 is pressed against the inclined surface 11 of the revetment by the anchor bolt 12 and the bearing and holding plate 13 so that the open side of the air bag 15 is sealed and fixed at the same time. And
[0017]
Further, by fixing one side of one rubber plate 17 to the upper surface of the bearing / holding plate 13 and fixing the other side to the upstream surface of the lower portion of the door body 14, the bearing / holding plate 3 and the door body 14 are fixed. Prevent water leakage between. In addition, the other end of a band 19 made of rubberized cloth having a sufficient strength with one end fixed by an anchor bolt 18 provided at an appropriate position downstream of the air bag 15 on the inclined surface 11 of the revetment is connected to the downstream surface of the door body 14. When the door body 14 stands up to a predetermined position by being fixed at an appropriate position above the position where the air bag 15 contacts, the door body 14 is stopped by the tension acting on the band 19.
[0018]
On the other hand, the side surface 20 on the main undulation gate side of the weir column 10 provided at the lower end of the revetment is a vertical surface perpendicular to the horizontal rotation center line in the undulation movement of the door body 4 of the main undulation gate. The side watertight rubber attached to the side end portion of the door body 4 functions as a door contact surface that slides while contacting. Further, the side surface 21 on the side of the sub undulation gate of the weir column 10 is an inclined surface orthogonal to the rotation center line parallel to the inclined surface 11 of the revetment in the undulation movement of the door body 14 of the sub undulation gate. The side watertight rubber attached to the side end portion of 14 functions as a door contact surface that slides while contacting.
[0019]
In the undulation gate of the inverted trapezoidal waterway of the present invention, the horizontal projection line of the rotation center line of the door body 4 of the main undulation gate and the rotation center line of the door body 14 of the sub undulation gate is made parallel. As a result, the top end line of the door body 14 of the sub undulation gate is located upstream of the revetment, and the fluency may overflow after moving above the door body 4 of the main undulation gate. This is easy and advantageous in handling fluency.
[0020]
As shown in FIG. 1, the top end of the door body 14 of the subsidiary hoisting gate in the standing state is higher than the top end of the door body 4 of the main hoisting gate. Therefore, the water and flutes that flow over the inverted trapezoidal undulation gate concentrate on the door body 4 of the main undulation gate, so that the fluency over the door body 4 is conveyed downstream by the water flowing down the channel bottom 1. It becomes easy.
[0021]
9 and 10 are detailed sectional views of the main undulation gate. A row of anchor bolts 2 installed across the bottom 1 of the channel with a constant depth at the center of the inverted trapezoidal channel is reduced to a flat rectangle when the air is discharged by the bearing retainer plate 3. By pressing the edge 6 of the air bag 5 with three sides closed and one side open against the bottom 1 of the water channel, the open side of the air bag 5 is sealed and the air bag 5 is fixed at the same time. At the end of the edge 6 of the open side of the air bag 5, there is a reinforcing fiber folded portion 23 protected by a resin rod 22 so that the bending radius of the reinforcing fiber is not too small. The edge 6 of the open side of the air bag 5 is prevented from being pulled out due to the tension acting on the air bag 5.
[0022]
Further, the bearing 26 protruding downstream of the bearing / holding plate 3 is combined with the rotary shaft 28 in the recess 27 at the lower end of the door body 4, and simultaneously the bearing 29 protruding at the lower end of the door body 4 is downstream of the bearing / holding plate 3. The door body 4 is free to rotate with respect to the bearing / holding plate 3 because it is combined with the rotary shaft 28 in the concave portion 30 on the side, and is installed on the water channel bottom 1 by the anchor bolt 2 so as to be raised and lowered.
[0023]
On the other hand, one side of one rubber plate 7 is fixed to the upper surface of the bearing / holding plate 3 by the holding plate 31 and the bolt 32, and the other side is fixed to the upstream side of the lower portion of the door body 4 by the holding plate 33 and the bolt 34. By fixing, water leakage between the bearing / holding plate 3 and the door body 4 is prevented. In addition, the other end of the band 9 made of rubberized cloth having sufficient strength with one end fixed by an anchor bolt 8 and a holding plate 35 installed at an appropriate position downstream of the air bladder 5 at the bottom of the water channel 1 is connected to the door body 4. When the door body 4 stands up to a predetermined position by fixing it with a bolt 36 and a holding plate 37 at an appropriate position above the position where the air bladder 5 contacts on the downstream surface, the door body 4 is moved by the tension acting on the belt 9. Try to stop.
[0024]
Next, the bending portion 38 at the head of the door body 4 guides the water flowing over the door body 4 to the downstream side when standing up, so that the water flowing over and the driftwood flowing down together with the air bag 5 or the belt. Protect against hitting 9. Further, at the time of lying down, the tip of the bending portion 38 at the head of the door body 4 is supported by the support base 39, and a necessary space is secured between the water channel bottom 1 and the door body 4. 9 is not crushed by the door body 4.
[0025]
As shown in FIG. 11, the bearing 26 protruding to the downstream side of the bearing / holding plate 3 is combined with the rotary shaft 28 in the recess 27 at the lower end of the door body 4, and at the same time, the bearing 29 protruding to the lower end of the door body 4 is also used as the bearing. Since the rotary shaft 28 is combined in the recess 30 on the downstream side of the presser plate 3, the door body 4 and the bearing presser plate 3 are freely rotatable with respect to each other. Further, the bearing / holding plate 3 is provided with a counterbore hole 40 matched to the anchor bolt 2 and a female screw 41 matched to the bolt 32 for fixing one side of the rubber plate 7. Further, the door body 4 is provided with a female screw 42 fitted to the bolt 34 for fixing the other side of the rubber plate 7 and a hole 43 fitted to the bolt 36 for fixing the other end of the band 9.
[0026]
As shown in FIG. 12, the air bag 5 manufactured so as to be reduced to a flat rectangle when the air is discharged has a dimension in which the open side is slightly smaller than the gate width, and the dimension in the direction perpendicular thereto is inflated. The door body 4 has sufficient dimensions to push up.
[0027]
The rubberized cloth is continuously bent and closed on three sides other than the open side to be pressed by the bearing / holding plate 3. On the open side, there is a reinforcing fiber folded portion 23 which is protected by a resin rod 22 so that the bending radius of the reinforcing fiber is not too small at the end portions of the edges 6 of the two rubberized cloths facing each other. Further, a hole 44 through which the anchor bolt 2 passes in parallel with the folded portion 23 penetrates the edge 6 of the two rubberized cloths. A base 45 is attached near the center of the rubberized cloth below the air bag 5.
[0028]
The above is the details of the main undulation gate, but the cross-sectional details of the sub undulation gate are as shown in FIGS. However, in the sub undulation gate, the rotation center line is set in parallel with the inclined surface 11 of the revetment, so that the whole is inclined, and thus the door body 14 and the air bag 15 have a substantially triangular shape. That is, as shown in FIG. 13, a bearing 46 projecting to the downstream side of the bearing / holding plate 13 is combined with the rotary shaft 48 in the recess 47 at the lower end of the triangular door body 14, and at the same time projecting to the lower end of the door body 14. 49 is combined with the rotary shaft 48 in the recessed portion 50 on the downstream side of the bearing / holding plate 13, so that the door body 14 and the bearing / holding plate 13 are freely rotatable with respect to each other.
[0029]
The bearing / holding plate 13 is provided with a hole 51 with counterbore matched to the anchor bolt 12 and a female screw 52 matched with a bolt for fixing one side of the rubber plate 17. Further, the door body 14 is provided with a female screw 53 matched with a bolt for fixing the other side of the rubber plate 17 and a hole 54 matched with a bolt for fixing the other end of the belt 19. Similarly to the above, a bending portion 55 is provided.
[0030]
As shown in FIG. 14, when air is exhausted, the air bag 15 manufactured so as to be reduced to a flat, substantially triangular shape has a size whose open side is slightly smaller than the gate width, and the direction perpendicular to this is as follows. Since it is determined to have a size necessary for pushing up the door body 14 when it is expanded, it has a substantially triangular size. The rubberized cloth is continuously bent and closed on three sides other than the open side to be pressed by the bearing / holding plate 13. Further, on the open side, there is a reinforcing fiber folded portion 57 which is protected by a resin rod 56 so that the bending radius of the reinforcing fiber is not too small at the ends of the edges 16 of the two rubberized cloths facing each other. Further, a hole 58 through which the anchor bolt 12 passes in parallel with the folded portion 57 penetrates the two rubberized cloths. A base 45 is attached near the center of the lower side of the air bag 15.
[0031]
After the main undulation gate and the auxiliary undulation gate are configured in this way, the air pipe 59 connected to the cap 45 provided on the lower side of the air bag 5 and the air bag 15 is buried in the concrete of the water channel and led to the land. FIG. 9 and FIG. 10 show the exhaust on / off valve 60, the exhaust flow adjustment valve 61, the exhaust discharge section 62, the supply air on / off valve 63, the supply air flow adjustment valve 64, and the air compressor 65 of the air operating device. Connect to.
[0032]
Then, as a result of press-fitting air from the air compressor 65 into the air bag 5 and the air bag 15 via the air supply flow rate adjustment valve 64, the air supply on / off valve 63, and the air pipe 59, the door body 4 is obtained. 3, 4, and 9 are sectional views in a state where the door body 14 stands up.
[0033]
FIG. 2 shows this state as seen from the downstream side, and the air bag 5 is positioned at almost the entire width of the back surface of the door body 4 of the main undulation gate at the center of the inverted trapezoidal water channel to support the door body 4. The triangular air bag 5 is positioned and supports the door body 14 at almost the entire width of the back surface of the triangular door body 14 of the sub-undulation gate on the inclined surfaces of the revetments on both sides.
[0034]
Further, the air compressor 65 is stopped, the air supply on / off valve 63 is closed, the exhaust on / off valve 60 is opened, and the air having the pressure inside the air bag 5 and the air bag 15 is discharged by the exhaust flow rate adjusting valve 61. 7, 8, and 10 are cross-sectional views in a state where the door body 4 and the door body 14 are laid down as a result of being released from the exhaust emission part 62 into the atmosphere while being controlled. FIG. 6 shows this state viewed from the downstream side, and the door body 4 of the main undulation gate completely falls to the channel bottom 1, and the door body 14 of the secondary undulation gate completely falls to the inclined surface 11 of the revetment at the same time. Therefore, the cross section of the inverted trapezoidal water channel is opened leaving the weir column 10. In this state, earth and sand or the like may drastically flow down the bottom of the water channel, and therefore, an angle iron 67 is provided for reinforcement at the head of the water channel bottom 66 immediately upstream of the bearing / holding plate.
[0035]
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, and 28 are undulations of the inverted trapezoidal channel of the present invention. FIG. 15 is a plan view of an undulating gate of an inverted trapezoidal channel, FIG. 16 is a rear view, FIG. 17 is a sectional view of a main undulating gate, and FIG. 18 is a sectional view of a sub-undulating gate. FIG. 19 is a plan view of the undulating gate of the inverted trapezoidal channel, FIG. 20 is a rear view, FIG. 21 is a sectional view of the main undulating gate, and FIG. 22 is a sectional view of the subsidiary undulating gate. 23 is a detailed sectional view of the main undulation gate in the standing state, FIG. 24 is a detailed sectional view of the main undulation gate in the lying state, FIG. 25 is an explanatory view of the door body of the main undulation gate, and FIG. 27 is an explanatory view of the air bag, FIG. 27 is an explanatory view of the door body of the auxiliary undulation gate, and FIG. It is an explanatory view of an air bag of the gate.
[0036]
15, 16, 17, 18, 19, 20, 21, and 22, the cross section of the inverted trapezoidal channel is installed across the channel bottom 101 at a constant depth at the center of the channel. A row of anchor bolts 102, a fixing plate / holding plate 103, and a rubberized cloth connecting plate 104 firmly fixed to the upper surface of the fixing table / holding plate 103 are made of a steel plate that can be raised and lowered on the channel bottom 101. At the base of the downstream side of the rectangular door 105, the edge 107 of the open side of the air bag 106, which has three sides closed and one side that shrinks to a flat rectangle when air is discharged, is connected to the anchor bolt 102 and the fixing base. The open side of the air bag 106 is sealed and fixed at the same time as the main undulation gate by pressing against the water channel bottom 101 with the combined presser plate 103. At this time, since one side of the rubberized cloth connecting plate 104 is fixed to the upper surface of the fixing plate 103 and the other side is fixed to the upstream surface of the lower portion of the door body 105, the door body 105 is connected to the water channel. At the same time as anchoring freely to the bottom 101, water leakage between the fixing plate / holding plate 103 and the door body 105 is prevented. In addition, the other end of a band 109 made of rubberized cloth having one end fixed with an anchor bolt 108 provided at an appropriate position downstream of the air bag 106 on the water channel bottom 101 is connected to the air on the downstream surface of the door body 105. When the door body 105 stands up to a predetermined position by being fixed at an appropriate position above the position where the bag 106 contacts, the door body 105 is stopped by the tension acting on the band 109.
[0037]
A row of anchor bolts 112 installed across the sloped surface 111 of the revetment above the weir column 110 provided at the lower end of the revetment on both sides of the main undulation gate constructed in this way, The base of the downstream side of the substantially triangular door body 115 made of a steel plate, which is installed on the inclined surface 111 of the revetment in a undulating manner by means of a rubberized cloth connecting plate 114 firmly fixed to the upper surface of the fixing plate / holding plate 113. The edge 117 of the open side of the air bag 116 having two sides closed and one side opened, which is reduced to a flat and substantially triangular shape when air is discharged, is protected by the anchor bolt 112 and the fixing plate / holding plate 113. By pressing against the inclined surface 111, the open side of the air bag 116 is sealed and fixed at the same time as a sub-undulation gate.
[0038]
At this time, the connecting plate 114 made of rubberized cloth has one side fixed to the upper surface of the fixing plate / holding plate 113 and the other side fixed to the upper upstream surface of the lower portion of the door body 115. At the same time, the water can be prevented from leaking between the fixing plate / holding plate 113 and the door body 115 at the same time. In addition, the other end of a belt 119 made of rubberized cloth having sufficient strength with one end fixed by an anchor bolt 118 provided at an appropriate position downstream of the air bag 116 on the inclined surface 111 of the revetment is connected to the downstream surface of the door body 115. When the door body 115 stands up to a predetermined position by being fixed at an appropriate position above the position where the air bag 116 contacts, the door body 115 is stopped by the tension acting on the band 119.
[0039]
On the other hand, the side surface 120 on the main hoisting gate side of the weir column 110 provided at the lower end of the revetment is a vertical surface perpendicular to the horizontal rotation center line in the hoisting motion of the main hoisting gate door body 105, and the door of the main hoisting gate The side watertight rubber attached to the side end of the body 105 functions as a sliding surface that slides while contacting.
[0040]
On the other hand, the side surface 121 of the weir column 110 on the side of the sub undulation gate is an inclined surface orthogonal to the rotation center line parallel to the inclined surface 111 of the revetment in the undulation movement of the door body 115 of the sub undulation gate. The side watertight rubber attached to the side end of the body 115 functions as a door contact surface that slides while contacting.
[0041]
In the undulation gate of the inverted trapezoidal waterway of this embodiment, the rotation center line of the door body 105 of the main undulation gate and the horizontal projection line of the rotation center line of the door body 115 of the sub undulation gate are not parallel, and are closer to the upper part of the revetment. The horizontal projection line of the rotation center line of the door body 115 of the sub undulation gate is set to be separated from the rotation center line of the door body 105 of the main undulation gate. As a result, the line where the side surface 121 on the side of the sub-undulation gate of the weir column 110 provided at the lower end of the revetment and the inclined surface 111 of the revetment intersects becomes lower toward the downstream. This means that the water and flutes that overflow the door body 115 of the subsidiary undulation gate easily flow downstream from the weir pillar 110.
[0042]
As shown in FIG. 16, the top end of the door body 115 of the subsidiary hoisting gate in the standing state is higher than the top end of the door body 105 of the main hoisting gate. Therefore, the water and flutes that flow over the inverted trapezoidal undulation gate concentrate on the door body 105 of the main undulation gate, so that the flutes that pass over the door body 105 are downstream by the water flowing down the channel bottom 101. It becomes easy to be transported.
[0043]
23 and 24 are detailed sectional views of the main undulation gate. When one side of the anchor bolts 102 installed across the channel bottom 101 of the central part of the channel with the inverted trapezoidal cross-section has a constant depth is discharged into the flat rectangular shape when the air is discharged by the fixing table / holding plate 103. The open side of the air bag 106 is sealed by pressing the edge 107 of the open side of the rubber-filled air bag 106 with three sides closed and one side open to the water channel bottom 101, and at the same time fixed to the water channel bottom 101. To do. At the end of the edge 107 of the open side of the air bag 106, there is a reinforcing fiber folded portion 123 protected by a resin rod 122 so that the bending radius of the reinforcing fiber is not too small. It functions so that the edge 107 of the open side of the air bag 106 is not pulled out by the tension acting on the air bag 106 over the corner 124 upstream of 103 and the angle 125 upstream of the water channel bottom 101.
[0044]
Next, one side of a rubber-coated cloth connecting plate 104 having sufficient strength is firmly fixed to the upper surface of the fixing table / holding plate 103 with a bolt 126 and a holding plate 127, and the other side is a door 105 made of steel plate. The steel plate door body 105 is anchored to the fixing table / holding plate 103 so as to be raised and lowered, and at the same time, water leakage between the two is prevented.
[0045]
At the end of the connecting plate 104, there is a reinforcing fiber folded portion 131 which is protected by a resin rod 130 so that the bending radius of the reinforcing fiber is not too small. The connecting plate 104 is prevented from being pulled out from a predetermined position by the tension acting on the corner 133 of the plate 129.
[0046]
Further, the other end of a band 109 made of rubberized cloth having sufficient strength with one end fixed to the channel bottom 101 by an anchor bolt 108 and a holding plate 134 installed at an appropriate position downstream of the air bag 106 on the channel bottom 101 is a door. By fixing with bolts 135 and a holding plate 136 at an appropriate position above the position where the air bag 106 contacts on the downstream surface of the body 105, the tension applied to the band 109 when the door body 105 stands up to a predetermined position. The door body 105 is stopped. The band 109 also has a reinforcing fiber folded portion 138 protected at its end by a resin rod 137 so that the bending radius of the reinforcing fiber is not excessively small. The corner 139 of the press plate 134 and the corner of the press plate 136 are also provided. The belt 109 is prevented from being pulled out from a predetermined position by the tension acting on the belt 140.
[0047]
Next, the bent portion 141 of the head of the door body 105 guides the water that overflows the door body 105 to the downstream side when standing up, so that the overflowing water and the driftwood that flows down together with the air bag 106 and the belt. Protect 109 from hitting. At the time of lying down, the tip of the bent portion 141 of the head of the door body 105 is supported by the support base 142, and a necessary space is secured between the water channel bottom 101 and the door body 105. 109 is not crushed by the door body 105.
[0048]
As shown in FIG. 25, the steel plate door body 105 has a width direction dimension slightly smaller than the weir width and a length necessary to ensure a standing height required for standing up. A bent portion 141 is formed at the head of the door body 105, and at the same time, a round bar steel 143 having a diameter substantially equal to the thickness of the fixing plate / holding plate 103 is welded to the lower end to cause the door body 105 to move up and down. In doing so, the lower end of the door body 105 makes the upper surface 144 of the air bag 106 slip easily. In addition, a female screw 145 into which a bolt 128 for fixing the connecting plate 104 is screwed is arranged in a line at a portion along the round bar 143 of the steel plate door body 105, and an upper portion thereof is aligned with the bolt 135 for fixing the belt 109. There is a perforated hole 146.
[0049]
As shown in FIG. 26, when the air is discharged, the size of the open side of the air bag 106 which is manufactured to be reduced to a flat rectangle is slightly smaller than the gate width, and when expanded in a direction perpendicular to the gate width. It has sufficient dimensions to push up the door body 105.
[0050]
The rubberized cloth is continuously bent and closed on the three sides other than the open side to be pressed by the fixed base / holding plate 103. In the open side, there is a reinforcing fiber folded portion 123 which is protected by a resin rod 122 so that the bending radius of the reinforcing fiber is not too small at the end of the edge 107 of the two rubberized cloths facing each other. Further, a hole 147 through which the anchor bolt 102 passes in parallel with the folded portion 123 penetrates the edge 107 of the two rubberized cloths. A base 148 is attached near the center of the rubberized cloth below the air bag 106.
[0051]
The above is the details of the main undulation gate. The cross-sectional details of the sub undulation gate are as shown in FIGS. However, since the rotation center line of the door body 115 is set in parallel to the inclined surface 111 of the revetment, the whole of the subsidiary undulation gate is inclined. Therefore, the door body 115 and the air bag 116 have a substantially triangular shape. That is, as shown in FIG. 27, it has a width direction dimension slightly smaller than the weir width and a length necessary for securing the standing height required for standing, but it becomes smaller toward the upper part of the revetment, and the overall shape is reduced. Becomes a shape close to a triangle. A bent portion 149 is formed at the head of the door body 115 made of steel plate, and at the same time, a round bar steel 150 having a diameter substantially equal to the thickness of the fixing plate / holding plate 113 is welded and attached to the lower end of the door body 115. The lower end of the door body 115 makes the upper surface 151 of the air bag 116 slip easily when performing the undulation motion.
[0052]
Further, a female screw 152 into which a bolt 128 for fixing the connecting plate 114 is screwed is arranged in a line at a portion along the round bar steel 150 of the steel plate door body 115, and a bolt for fixing the other end of the belt 119 is arranged above the screw. A hole 153 is provided to match the above.
[0053]
As shown in FIG. 28, when air is exhausted, the air bag 116 manufactured so as to be reduced to a flat, substantially triangular shape has a size whose open side is slightly smaller than the gate width, and the direction perpendicular to this is as follows. Since it is determined so as to have a size necessary for raising the door body 115 when it expands, the shape is almost a triangle. Then, the rubberized cloth is continuously folded and closed on three sides other than the open side to be pressed by the fixing base pressing plate 113. On the open side, there is a reinforcing fiber folded portion 155 which is protected by a resin rod 154 so that the bending radius of the reinforcing fiber is not excessively small at the ends of the edges 116 of the two rubberized cloths facing each other. Furthermore, a hole 156 for allowing the anchor bolt 112 to pass through the folded portion 155 passes through the two rubberized cloths. A base 148 is attached near the center of the lower side of the air bag 116.
[0054]
After the main undulation gate and the auxiliary undulation gate are configured in this way, the air pipe 59 connected to the base 148 attached to the lower side of the air bag 106 and the air bag 116 is buried in the concrete of the water channel and led to the land. FIG. 23 and FIG. 24 show the exhaust on-off valve 60, the exhaust flow adjustment valve 61, the exhaust discharge part 62, the air supply on-off valve 63, the air supply flow adjustment valve 64, and the air compressor 65 of the air operating device. Connect to.
[0055]
Then, as a result of injecting air from the air compressor 65 into the air bag 106 and the air bag 116 through the air supply flow rate adjustment valve 64, the air supply on / off valve 63, and the air pipe 59, the door body 105 is obtained. 17, 18, and 23 are cross-sectional views of the door body 115 standing up.
[0056]
FIG. 16 is a view of this state from the downstream side, and an air bag 106 is located at almost the entire width of the back surface of the door body 105 of the main undulation gate at the center of the inverted trapezoidal water channel to support the door body 105. An air bag 116 having a shape close to a triangle is positioned at almost the entire width of the back surface of the door body 115 having a shape close to a triangle of the sub-undulation gate on the inclined surfaces of the revetments on both sides, and supports the door body 115.
[0057]
Further, the air compressor 65 is stopped, the air supply on-off valve 63 is closed, the exhaust on-off valve 60 is opened, and the air having the pressure inside the air bag 106 and the air bag 116 is discharged by the exhaust flow rate adjusting valve 61. FIG. 21, FIG. 22 and FIG. 24 are cross-sectional views of the door body 105 and the door body 115 lying down as a result of release from the exhaust emission part 62 into the atmosphere while controlling.
[0058]
FIG. 20 shows this state viewed from the downstream side, and the door body 105 of the main undulation gate completely falls on the channel bottom 101, and at the same time, the door body 115 of the sub undulation gate completely falls on the inclined surface 111 of the revetment. Therefore, the cross section of the inverted trapezoidal water channel is opened leaving the dam pillar 110. In this state, earth and sand or the like may drastically flow down the bottom of the water channel, and therefore, an angle iron 67 is provided for reinforcement at the head portion of the water channel bottom 66 immediately upstream of the fixing base / holding plate.
[0059]
【The invention's effect】
According to the inverted trapezoidal channel undulating gate of the present invention, the undulating gate having a steel plate door that can be installed only in the rectangular channel canal, the inverted trapezoidal channel channel also has a large channel cross section. It was possible to install without change.
[0060]
As a result, the concrete structure at the gate installation site was downsized, the shape was simplified, and construction costs could be reduced. In particular, the economic effect is remarkable in the inverted trapezoidal canal where the revetment slope is gentle.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a plan view showing a undulating gate of an inverted trapezoidal water channel according to an embodiment of the present invention in a standing state.
FIG. 2 is a rear view of a state where the undulating gate is raised.
FIG. 3 is a cross-sectional view of a state in which a main undulation gate is raised.
FIG. 4 is a cross-sectional view of a state in which a subsidiary undulation gate is raised.
FIG. 5 is a plan view showing a state in which the undulation gate has fallen down.
FIG. 6 is a rear view of a state in which the undulation gate is lying down.
FIG. 7 is a cross-sectional view of a state in which a main undulation gate has fallen down.
FIG. 8 is a cross-sectional view of a state in which a subsidiary undulation gate has fallen down.
FIG. 9 is a detailed cross-sectional view of the main undulation gate standing upright.
FIG. 10 is a detailed cross-sectional view of a state in which the main undulation gate has fallen down.
FIG. 11 is an explanatory diagram of a door body of a main undulation gate.
FIG. 12 is an explanatory diagram of an air bag of a main undulation gate.
FIG. 13 is an explanatory diagram of a door body of a subsidiary undulation gate.
FIG. 14 is an explanatory view of an air bag of a subsidiary undulation gate.
FIG. 15 is a plan view showing a undulating gate according to another embodiment of the inverted trapezoidal water channel of the present invention, in a state in which the undulating gate is raised.
FIG. 16 is a rear view of a state where the undulating gate is raised.
FIG. 17 is a cross-sectional view of a state in which a main undulation gate is raised.
FIG. 18 is a cross-sectional view of a state in which a subsidiary undulation gate is raised.
FIG. 19 is a plan view of a state in which the undulating gate has fallen down.
FIG. 20 is a rear view showing a state in which the undulation gate has fallen down.
FIG. 21 is a cross-sectional view showing a state where the main undulation gate has fallen down.
FIG. 22 is a cross-sectional view of a state in which the subsidiary undulation gate has fallen down.
FIG. 23 is a detailed cross-sectional view of the main undulation gate in a standing state.
FIG. 24 is a detailed cross-sectional view of a state in which the main undulation gate has fallen down.
FIG. 25 is an explanatory diagram of a door body of a main undulation gate.
FIG. 26 is an explanatory diagram of an air bag of a main undulation gate.
FIG. 27 is an explanatory view of a door body of a subsidiary undulation gate.
FIG. 28 is an explanatory diagram of an air bag of a subsidiary undulation gate.
[Explanation of symbols]
1 Channel bottom
2 Anchor bolt
3 Bearing and holding plate
4 doors
5 Air bag
6 Edge
7 Rubber plate
8 Anchor bolt
9 bands
10 Weir pillar
11 Inclined surface of revetment
12 Anchor bolt
13 Bearing and holding plate
14 Door
15 Air bag
16 edge
17 Rubber plate
18 Anchor bolt
19 belt
20 sides
22 Rod
23 Folding part
24 corners
25 corners
26 Bearing
27 recess
28 Rotating shaft
29 Bearing
30 recess
31 Presser plate
32 volts
33 Presser plate
34 volts
35 Presser plate
36 volts
37 Presser plate
38 Bending part
39 Support stand
40 holes
41 Female thread
42 Female thread
43 holes
44 holes
45 base
46 Bearing
47 recess
48 Rotating shaft
49 Bearing
50 recess
51 holes
52 Female thread
53 Female thread
54 holes
55 Bending part
56 Rod
57 Turn-up part
58 holes
59 Air pipe
60 Exhaust valve
61 Flow control valve for exhaust
62 Exhaust discharge part
63 Air supply on / off valve
64 Flow adjustment valve for air supply
65 Air compressor
66 Channel bottom
67 Yamagata Steel
101 water channel bottom
102 Anchor bolt
103 Presser plate combined with fixing base
104 Connecting board
105 Door
106 Air bag
107 rim
108 Anchor bolt
109 belt
110 Weir pillar
111 Inclined surface of revetment
112 Anchor bolt
113 Presser plate combined with fixing base
114 Connecting board
115 Door
116 air bag
117 rim
118 Anchor bolt
119 belt
120 side
121 side
122 Rod
123 Folding part
124 corners
125 corners
126 Volts
127 Presser plate
128 volts
129 Presser plate
130 rod
131 Folding part
132 corners
133 corner
134 Presser plate
135 volts
136 Presser plate
137 rod
138 Folding part
139 corner
140 corners
141 Bending part
142 Support stand
143 Round steel bar
144 Top surface
145 Female thread
146 holes
147 holes
148 clasp
149 Bending part
150 Round steel bar
151 Top surface
152 Female thread
153 hole
154 Rod
155 Turn-up part
156 holes

Claims

The side surface of the main undulation gate side of the dam pillar provided at the lower end of the revetment on both sides of the main undulation gate is composed of (1) main undulation gate and (2) sub undulation gate described below. It is a vertical plane perpendicular to the horizontal rotation center line in the undulation movement of the door body of the undulation gate, and functions as a door contact surface that slides in contact with the side watertight rubber attached to the side edge of the door body of the main undulation gate Further, the side surface of the weir column on the side of the secondary undulation gate is an inclined surface perpendicular to the rotation center line parallel to the inclined surface of the revetment in the undulation motion of the door body of the secondary undulation gate. The side watertight rubber attached to the side edge of the door body of the gate is configured to function as a door contact surface that slides in contact with the air bag on the main undulation gate and auxiliary undulation gate. Connect the air pipe and press-fit with compressed air. And air bag is inflated is raised each door body, when the discharged air in the opposite undulations gate of inverted trapezoidal canal, characterized by being configured so as to fall down each door body by shrinking the bladder.
(1): One row of anchor bolts installed across the bottom of the channel with a constant depth at the center of the channel with an inverted trapezoidal cross section, and a rectangle installed on the bottom of the channel using the anchor bolt. A main undulation gate composed of three members: a steel door body and an air bag attached to a base portion on the downstream side of the steel door body, which is reduced to a flat rectangle when air is discharged.
(2): One row of anchor bolts installed across the sloped surface of the revetment above the weir pillars provided at the bottom of the revetment on both sides of the main undulation gate, and the anchor bolts can be installed freely on the revetment It is composed of three members: a substantially triangular door made of steel plate, and an air bag that shrinks to a flat substantially triangular shape when air attached to the root portion downstream of the door is discharged. The side relief gate.

2. The undulating gate of the inverted trapezoidal canal according to claim 1, wherein the main undulating gate and the auxiliary gate are driven by bolts screwed into a row of female screws provided on anchor bases installed at the bottom of the channel and the revetment, instead of anchor bolts installed at the bottom of the channel and the revetment. The undulating gate of the inverted trapezoidal waterway, characterized in that the steel door body of the undulating gate is installed freely.

In the undulation gate of the inverted trapezoidal waterway according to claim 1 or 2, the horizontal projection line of the rotation center line parallel to the inclined surface of the revetment in the undulation movement of the door body of the sub undulation gate is in the undulation movement of the door body of the main undulation gate. Crossing between the inclined surface of the side of the weir column on the side of the sub undulation gate and the inclined surface of the revetment by moving the upper part of the revetment to the downstream side with respect to the horizontal rotation center line The undulating gate of the inverted trapezoidal waterway is constructed so that the downstream line becomes lower in the downstream, so that the water and flutes that flow over the door body of the secondary undulating gate flow easily in the downstream direction from the dam pillar position. .

In the undulation gate of the inverted trapezoidal water channel according to any one of claims 1 to 3, in order to strengthen the bending rigidity in the height direction of the door body, a long steel plate is placed on the upstream surface of the door body in a posture perpendicular to the surface. Inverted trapezoidal undulation gate, which is attached by welding in a direction parallel to the water flow.

In the undulation gate of the inverted trapezoidal water channel according to any one of claims 1 to 4, the undulation gate having a small gate width (about 2 to 3 m) is arranged side by side in the direction of the rotation center line in the undulation movement of the door body, A undulating gate of an inverted trapezoidal waterway characterized by a large undulating gate (about 10 to 200 m).

6. In the undulating gate of the inverted trapezoidal water channel according to any one of claims 1 to 5, the rising water of the sub undulating gate is appropriately higher than the rising height of the main undulating gate, so that the overflowing water and sluice can flow over the main undulating gate. The undulating gate of the inverted trapezoidal waterway, characterized by being concentrated in the part.