JP2006225991A - Pneumatic roof gate - Google Patents

Pneumatic roof gate Download PDF

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JP2006225991A
JP2006225991A JP2005041141A JP2005041141A JP2006225991A JP 2006225991 A JP2006225991 A JP 2006225991A JP 2005041141 A JP2005041141 A JP 2005041141A JP 2005041141 A JP2005041141 A JP 2005041141A JP 2006225991 A JP2006225991 A JP 2006225991A
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door body
door
gate
air bag
bolt
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JP4370620B2 (en
JP2006225991A5 (en
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Akio Iida
章雄 飯田
Yoshio Iida
祥雄 飯田
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IIDA TEKKO KK
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IIDA TEKKO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To improve the safety in flood control by surely establishing technology for reducing the inhibition rate such as a rubber coated cloth-made roof gate weir when driftwood or earth and sand stay on the downstream side of the door body in case of a flood to cause an accident of inhibiting falling-down in a pneumatic roof gate, which is a kind of a steel plate-made roof gate. <P>SOLUTION: This pneumatic roof gate can be installed by arranging several unit gates equally dividing the space between the diameters of the gates, and this characteristic is used so that the strength of a pressing bolt for fixing an intermediate watertight rubber connecting between the door body groups of the unit gates to each other is enough against the ordinary applied stress, and also the strength is to surely break the pressing bolt due to stress generated between the inhibited door body and the uninhibited door body when driftwood or earth and sand stay on the back of the door body to inhibit part of the door body from falling down. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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あり、鋼板製の扉体の下流側根元部に枕状に位置する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。 This invention is a kind of undulation gate used for the purpose of weiring or discharging the water flowing in the water channel by allowing the door body to stand up or lie down freely by the rotation center provided at the bottom of the water channel, If the compressed air is fed into the air bag located on the downstream side of the door body by connecting the air pipe from the air control device on land, the air bag expands and the door body is raised. Further, the present invention relates to a pneumatic undulation gate in which if the air having pressure is discharged from the air bag, the air bag contracts flatly and the door body falls.

このような空圧式起伏ゲートにあっては、扉体を空気袋が堰幅全体に位置して支持するので、扉体に作用する荷重と空気袋の内部の空気圧が一定の関係を持つことになり、同一のゲート幅であれば数個の空圧式起伏ゲートを一括して起伏操作することが可能となる。
そこで、ゲート幅の小さい(2〜5m程度)空圧式起伏ゲートを単位ゲートとして、扉体の起伏時の回転中心の延長方向に並べて設置して幅の広い(10〜200m)水路の起伏ゲートとし、全体を1本の空気管で空気操作装置に接続して一括操作することが多い。
In such a pneumatic undulation gate, since the air bag is supported by the air bag positioned over the entire weir width, the load acting on the door body and the air pressure inside the air bag have a certain relationship. Therefore, if the gate width is the same, several pneumatic undulation gates can be operated together.
Therefore, a pneumatic undulation gate with a small gate width (about 2 to 5 m) is used as a unit gate, and it is installed side by side in the extending direction of the center of rotation when the door body is undulating to form a undulation gate of a wide (10 to 200 m) water channel. In many cases, the whole is connected to an air operating device with a single air pipe and is collectively operated.

このように、複数の単位ゲートを並べて設置した空圧式起伏ゲートにおいては、隣接する単位ゲートの扉体は、両方の扉体の側端部に重ねて押えボルトと押え板によって固定した帯状の中間水密ゴムによって、両扉体の間に生ずる隙間からの漏水を防止しつつ結合される。
この中間水密ゴムによる扉体群の結合は、単位ゲート群による空圧式起伏ゲートに全体として柔軟性を与えると同時に経済性に優れた起伏ゲートの提供を可能にする。
柔軟性の効果は倒伏した扉体の上に堆砂した状態での起立操作の時に扉体群が、堆砂の部分的な多少に対応して捩れて排砂を効果的に進行させる等が指摘できる。
経済性は、扉体や空気袋を製造や運搬、据付けに容易な大きさとすることによって得られるもので、ゲートの径間に一致させた部品を製造据付する場合に比較して格段に安価となる。
特にありません。
In this way, in the pneumatic undulation gate in which a plurality of unit gates are arranged side by side, the adjacent unit gate doors are overlapped on the side edges of both doors and fixed by presser bolts and presser plates. The watertight rubber is coupled while preventing water leakage from the gap between the door bodies.
The combination of the door groups by means of the intermediate watertight rubber gives the overall flexibility to the pneumatic undulation gate by the unit gate group, and at the same time, provides an undulation gate that is economical.
The effect of flexibility is that the door body group twists in response to a part of the sediment during the standing operation in the state where the sand is deposited on the overturned door body, and the sand discharge is effectively advanced. Can point out.
Economic efficiency is obtained by making doors and air bags easy to manufacture, transport and install, and is much less expensive than manufacturing and installing parts that match the gate diameter. Become.
Nothing in particular.

このようにゲート幅の小さい単位ゲートの群を並べて構成した空圧式起伏ゲートは優れた特性を有するのであるが、洪水時に山崩れ等によって発生した流木等が扉体の下流側に滞留すると倒伏操作が著しく阻害されるという欠点がある。 Pneumatic type undulation gates composed of a group of unit gates with a small gate width in this way have excellent characteristics. There is a drawback that it is significantly inhibited.

もっとも、このような倒伏阻害が発生した場合でも、柔軟な中間水密ゴムで連結された扉体群は全体としての柔軟性があるので、倒伏阻害を直接受けた扉体以外は若干の倒伏は可能である。 However, even if such lodging inhibition occurs, the door group connected by flexible intermediate watertight rubber is flexible as a whole, so it is possible to slightly incline other than the door body that directly received lodging inhibition It is.

しかし、堰体そのものが柔軟なゴム引布で構成されるゴム引布製起伏堰のような大きな洪水流下断面の確保が可能な空圧式起伏ゲートが提供されれば、河川の洪水時の安全性向上に非常に有効であるとして、新しい技術の開発が求められた。 However, if a pneumatic undulation gate capable of securing a large flood flow cross-section, such as a rubberized undulation dam made of a flexible rubberized fabric, is provided, the safety of rivers during flooding will be improved. Therefore, the development of new technology was sought.

そこで、この発明の空圧式起伏ゲートでは、一部の扉体が倒伏阻害を受けた場合には、単位ゲートの境界において隣接する扉体を結合している中間水密ゴムの部分を切離すことが検討された。 Therefore, in the pneumatic undulation gate of the present invention, when a part of the door body is inhibited from falling down, it is possible to cut off the portion of the intermediate watertight rubber that joins the adjacent door bodies at the boundary of the unit gate. It was examined.

その結果、中間水密ゴムを扉体の側端部に固定する押えボルトの破断によって隣接する扉体間の結合を開放することにした。 As a result, it was decided to release the connection between the adjacent door bodies by breaking the presser bolt that fixes the intermediate watertight rubber to the side end of the door body.

洪水時に一部の扉体が流木等によって倒伏を阻害された場合には、これに隣接する扉体は、倒伏操作によって空気袋の支持を失うので中間水密ゴムによって倒伏を阻害された扉体からの引留めの張力を受けることになる。
この時、中間水密ゴムや押え板並びに押えボルトに作用する力の大きさは計算により推定することが可能である。
そこで、この時の荷重によって破断する部品として押えボルトを選択する。
押えボルトの強度はボルトの太さや材質によって幅広い選択の可能性があるばかりでなく、ボルト軸部の一部を細くして弱点を意識的に作ることによっても調節することが可能で好都合である。
その結果、一部の扉体が倒伏阻害を受けても他の扉体を倒伏させて、洪水の流下断面を確保するという技術の目的の達成の確実性を大きく高めることができた。
またこのことにより、中間水密ゴムと押え板は破損せずに再利用の可能性があって経済的であり、早期のゲート機能の回復が可能である。
さらにこの処置により発生する費用は常時市場で調達することが可能な安価なボルトの購入費と中間水密ゴムの再取付けの作業費であり、非常に安価である。
If some of the doors are hampered by driftwood, etc. during a flood, the doors adjacent to this will lose support for the air bag due to the hovering operation. You will receive tension.
At this time, the magnitude of the force acting on the intermediate watertight rubber, the presser plate and the presser bolt can be estimated by calculation.
Therefore, a presser bolt is selected as a part that is broken by the load at this time.
The strength of the presser bolt not only has a wide selection depending on the thickness and material of the bolt, but also can be adjusted conveniently by narrowing a part of the bolt shaft and making the weak point conscious. .
As a result, even if some of the doors were hindered from falling down, it was possible to greatly increase the certainty of achieving the purpose of the technique of ensuring the cross-section of the flood by lowering other doors.
In addition, the intermediate watertight rubber and the presser plate can be reused without being damaged, and it is economical, and the gate function can be recovered at an early stage.
Furthermore, the cost generated by this procedure is the purchase cost of an inexpensive bolt that can be always procured in the market and the work cost of re-installing the intermediate watertight rubber, which is very inexpensive.

以下、この発明の空圧式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、図5、図6ならびに図7はこの空圧式起伏ゲートの1実施例を示すものであり、図1は空圧式起伏ゲートの正面図、図2は断面図でともに起立状態を示し、図3は断面図で倒伏状態を示し、図4は単位ゲート境界部の断面図で起立状態を示し、図5は図4に示すA−A断面図で中間水密ゴムの正常な取付常態を示し、図6は隣接する扉体の間で開度に差が生じ中間水密ゴムが大きく歪んだ状態を示し、図7は軸部に直径を細くした弱点部を設けたボルトの説明図である。
Embodiments of a pneumatic undulation gate according to the present invention will be described below in detail with reference to the drawings.
FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6 and FIG. 7 show one embodiment of this pneumatic relief gate, FIG. 1 is a front view of the pneumatic relief gate, and FIG. FIG. 3 is a sectional view showing a lying state, FIG. 4 is a sectional view of a unit gate boundary, and FIG. 5 is an AA sectional view shown in FIG. FIG. 6 shows a normal installation state of the watertight rubber, FIG. 6 shows a state in which the opening degree is different between adjacent door bodies and the intermediate watertight rubber is greatly distorted, and FIG. 7 shows a weak point portion with a reduced diameter on the shaft portion. It is explanatory drawing of the provided bolt.

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、水路を横断して並べて設置したアンカーボルト2が主押え板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5,6ならびにゴム引布製の繋留板7の上流の縁8の3枚を一緒に、水路底のコンクリートの上面1に押し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と繋留板7を水路底に固定する。 1, 2, and 3, anchor bolts 2 arranged side by side across the water channel on the top surface of the concrete of the rectangular water channel having a rectangular cross section are closed by the main presser plate 3, three sides are closed and one side is opened The upper edge 1 of the concrete at the bottom of the waterway together with the edges 5 and 6 of the open side of the air bag 4 made of rubberized cloth made into a flat rectangle and the upstream edge 8 of the anchoring plate 7 made of rubberized cloth together. The air bag 4 and the tether plate 7 are fixed to the bottom of the water channel at the same time as the open side of the air bag 4 is sealed.

この空気袋4の開いた辺の下方のゴム引布9の縁5の端には、樹脂製のロッド10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縁端の折返し定着部11があり、水路底のコンクリートの上面1の上流側にある溝状部分の下流側の角12に掛かって、ゴム引布9が作用する張力によって所定の位置から引抜かれないようにする。 At the end of the edge 5 of the rubberized cloth 9 below the open side of the air bag 4, the edge-folding fixing portion 11 is protected by a resin rod 10 so that the bending radius of the reinforcing fiber is not excessively small. It is hung on the corner 12 on the downstream side of the groove-like portion on the upstream side of the upper surface 1 of the concrete at the bottom of the water channel so that it is not pulled out from a predetermined position by the tension applied by the rubberized cloth 9.

また繋留板7の上流の縁8の端には、樹脂製のロッド13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縁端の折返し定着部14があり、主押え板3の上流側の下隅の凹部15によって上にも横にも移動しないよう確保されるので、繋留板7が作用する張力によって所定の位置から引抜かれないようになる。 Further, at the end of the upstream edge 8 of the anchoring plate 7, there is an edge-end folding fixing portion 14 protected by a resin rod 13 so that the bending radius of the reinforcing fiber is not excessively small, and upstream of the main presser plate 3. Since it is ensured that it does not move upward or laterally by the concave portion 15 at the lower corner of the side, it is prevented from being pulled out from a predetermined position by the tension acting on the anchoring plate 7.

同時に、空気袋4の開いた辺の上方のゴム引布16の縁6の端には、樹脂製のロッド17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縁端の折返し定着部18があり、繋留板7の上流側の縁8の端にある折返し定着部14の上流側19に掛かって、ゴム引布16が作用する張力によって所定の位置から引抜かれないようにする。
すなわち、繋留板7と空気袋4の上方のゴム引布16も、主押え板3とアンカーボルト2によって所定の位置から引抜かれないようになる。
At the same time, at the end of the edge 6 of the rubberized cloth 16 above the open side of the air bag 4, the edge folding and fixing portion protected by the resin rod 17 so that the bending radius of the reinforcing fiber is not too small. 18 is placed on the upstream side 19 of the folded fixing portion 14 at the end of the upstream edge 8 of the anchoring plate 7 so that it is not pulled out from a predetermined position by the tension applied by the rubberized cloth 16.
That is, the rubber pulling cloth 16 above the anchoring plate 7 and the air bag 4 is also not pulled out from a predetermined position by the main presser plate 3 and the anchor bolt 2.

このように構成した上で、アンカーボルト2にねじ込むナット20によって主押え板3を繋留板7、空気袋4の開いた辺のゴム引布9ならびに16の3枚のゴム引布を水路底のコンクリートの上面1に対して強く押し付けることにより、空気袋4の開いた辺を密閉しつつ、空気袋4と繋留板7を水路底に固定する。 With this configuration, the main presser plate 3 is attached to the anchor plate 7 by the nut 20 screwed into the anchor bolt 2, and the three rubberized fabrics 9 and 16 on the open side of the air bag 4 are attached to the bottom of the water channel. By strongly pressing against the upper surface 1 of the concrete, the air bag 4 and the tether 7 are fixed to the bottom of the water channel while sealing the open side of the air bag 4.

次に、繋留板7の下流側の縁21を鋼板製の扉体22の上流面の下端23に添う位置に押え板24とボルト25によって固定し、鋼板製の扉体22を繋留板7によって水路底のコンクリートの上面1に起伏自在に繋留する。
この場合も繋留板7の下流の縁21の縁端には、樹脂製のロッド26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縁端の折返し定着部27があり、繋留板7が作用する張力によって所定の位置から引抜かれないようにする。
Next, the edge 21 on the downstream side of the tether plate 7 is fixed to a position along the lower end 23 of the upstream surface of the steel plate door body 22 by a holding plate 24 and a bolt 25, and the steel plate door body 22 is fixed by the tether plate 7. Tethered to the upper surface 1 of the concrete at the bottom of the waterway.
Also in this case, at the edge of the downstream edge 21 of the anchoring plate 7, there is a bent-back fixing portion 27 of the edge protected by the resin rod 26 so that the bending radius of the reinforcing fiber is not too small. So that it cannot be pulled out from a predetermined position due to the tension applied by.

このように構成すれば、鋼板製の扉体22の下端23は主押え板3の下流側の縁に添う位置において空気袋4の上に載った状態となるので、空気袋4が膨張すれば鋼板製の扉体22が起立し、逆に空気袋4が平らに収縮すれば鋼板製の扉体22が倒伏することになる。 If comprised in this way, since the lower end 23 of the door 22 made from a steel plate will be in the state mounted on the air bag 4 in the position which follows the downstream edge of the main presser plate 3, if the air bag 4 expand | swells, it will be. If the steel plate door body 22 stands up and the air bag 4 contracts flatly, the steel plate door body 22 will fall.

さらに、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28に設置したアンカーボルト29と押え板30で一端をコンクリートの上面28に固定した十分な強度を有する引留帯31の他端を、鋼板製の扉体22の下流側の面の空気袋4の接触するより上の適当な位置にボルト32と押え板33で固定することにより、鋼板製の扉体22が所定の姿勢まで起立した時には、この引留帯31に作用する張力により停止するようにする。 Furthermore, the anchor belt 29 and the holding plate 30 installed on the concrete upper surface 28 at an appropriate position downstream of the air bladder 4 at the bottom of the water channel and the retaining band 31 having one end fixed to the concrete upper surface 28 have sufficient strength. The other end of the door 22 made of steel plate is fixed to an appropriate position above the contact of the air bag 4 on the downstream side of the door 22 made of steel plate with a bolt 32 and a presser plate 33 so that the door 22 made of steel plate When standing up to the posture, it is stopped by the tension acting on the retaining band 31.

この引留帯31においても、その端部には樹脂製のロッド34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定着部35があって、引留帯31が作用する張力によって所定の位置から引抜かれないようにする。 The retaining band 31 also has a reinforcing fiber folding fixing portion 35 protected at its end by a resin rod 34 so that the bending radius of the reinforcing fiber is not excessively small, and the tension at which the retaining band 31 acts. To prevent it from being pulled out from a predetermined position.

次に鋼板製の扉体22の頭部の曲げ加工部36は、起立時には越流する水を下流側に導くことにより、水や一緒に流下する流木等が空気袋4や引留帯31等を打たないよう保護する。
また倒伏時には、鋼板製の扉体22の頭部の曲げ加工部36が支持台37に支持されて、コンクリートの上面1、コンクリートの上面28、ならびに鋼板製の扉体22の下流面によって必要な空間を確保するから、空気袋4や引留帯31は鋼板製の扉体22に押し潰されることがない。
Next, the bent portion 36 of the head portion of the steel plate door body 22 guides the water that overflows to the downstream side when standing up, so that the water, the driftwood that flows down together with the air bag 4, the retaining band 31, and the like. Protect against hitting.
Further, at the time of lodging, the bent portion 36 of the head portion of the steel plate door body 22 is supported by the support base 37, and is required by the concrete upper surface 1, the concrete upper surface 28, and the downstream surface of the steel plate door body 22. Since the space is ensured, the air bladder 4 and the retaining band 31 are not crushed by the steel plate door body 22.

このように構成した上で、空気袋4の下方の口金41に接続した空気管42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43、排気用流量調節弁44、排気放出部45、給気用開閉弁46、給気用流量調節弁47、空気圧縮機48に、図1、図2および図3のように接続する。 With this configuration, the air pipe 42 connected to the base 41 below the air bag 4 is guided to the land by burying it in the concrete of the water channel, etc. The valve 44, the exhaust discharge part 45, the air supply on / off valve 46, the air supply flow rate adjustment valve 47, and the air compressor 48 are connected as shown in FIGS.

その上で空気圧縮機48から給気用流量調節弁47、給気用開閉弁46、空気管42、口金41を経由して空気袋4の内部に空気を圧入した結果、鋼板製の扉体22が起立した状態の断面図が図2であり、扉体22の頭部の曲げ加工部36が、越流する水を下流に導いて、空気袋4や帯31を直接打たないよう保護している。
この状態の断面図が図2であり、上流側から見たのが図1である。
Then, as a result of press-fitting air from the air compressor 48 into the air bag 4 via the air supply flow rate adjustment valve 47, the air supply on / off valve 46, the air pipe 42, and the base 41, a steel plate door body is obtained. 2 is a cross-sectional view of the door 22 standing up, and the bent portion 36 of the head of the door body 22 protects the air bag 4 and the belt 31 from being directly hit by guiding the overflowing water downstream. is doing.
FIG. 2 is a cross-sectional view of this state, and FIG. 1 is a view from the upstream side.

他方、空気圧縮機48を停止し、給気用開閉弁46を閉じ、排気用開閉弁43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44によって制御しつつ、排気放出部45から大気中へ放出した結果、扉体22が完全に倒伏した状態の断面図が図3である。 On the other hand, the air compressor 48 is stopped, the supply on / off valve 46 is closed, the exhaust on / off valve 43 is opened, and the air having the pressure inside the air bag 4 is controlled by the exhaust flow control valve 44. FIG. 3 is a cross-sectional view of the door body 22 completely lying down as a result of being released from the exhaust emission part 45 into the atmosphere.

図4に空圧式起伏ゲートが起立した時の単位ゲートの境界部の断面図を示す。空気袋4は単位ゲートの幅の中央付近では図2のように膨張し扉体22を押起すのであるが、単位ゲートの側端付近では不完全な形にしか膨張できない。しかし扉体22は自身の剛性によって起立している。そして隣接する扉体22の境界において両扉体22の隙間を越えて設置された中間水密ゴム38が押え板39と押えボルト40によって両方の扉体22に固定され隙間からの漏水を防止しつつ、両方の扉体22を連結している。
この時の中間水密ゴム38の付近の断面の説明図が図5であり、図1並びに図4のA−A断面を示したものである。基本的には隣接する単位ゲートは同一の形状寸法に製作据付されているので、両単位ゲートの扉体22は同調して起立倒伏するから中間水密ゴム38に格別の外力が作用することはない。中間水密ゴム38は両単位ゲートの扉体22の隙間からの漏水を防止している。
この状況をゲート全体として上流から見たのが図1であり、扉体22は起立している。図1に示した空圧式起伏ゲートは3基の単位ゲートを並べて設置してある。起立した3個の扉体22の左端と右端は側面戸当52との隙間からの漏水を防止する側面水密ゴム49が押え板50と押えボルト51によって扉体22の側端に取付けられている。また起立した3個の扉体22の境界においては、隣接する扉体22と扉体22の間の隙間からの漏水を
防止する中間水密ゴム38が押え板39と押えボルト40によって扉体22の側端に取付けられている。
FIG. 4 shows a cross-sectional view of the boundary portion of the unit gate when the pneumatic undulation gate stands. The air bag 4 is inflated as shown in FIG. 2 near the center of the width of the unit gate and pushes up the door body 22, but can only be inflated in the vicinity of the side edge of the unit gate. However, the door body 22 stands up due to its own rigidity. An intermediate watertight rubber 38 installed across the gap between the door bodies 22 at the boundary between the adjacent door bodies 22 is fixed to both door bodies 22 by the presser plates 39 and the presser bolts 40 while preventing water leakage from the gaps. Both door bodies 22 are connected.
FIG. 5 is an explanatory view of a cross section in the vicinity of the intermediate watertight rubber 38 at this time, and shows the AA cross section of FIGS. 1 and 4. Basically, the adjacent unit gates are manufactured and installed in the same shape and size, so that the door body 22 of both unit gates stands up and down in synchronism, so that no special external force acts on the intermediate watertight rubber 38. . The intermediate watertight rubber 38 prevents water leakage from the gap between the door bodies 22 of both unit gates.
FIG. 1 shows the situation from the upstream as a whole gate, and the door body 22 stands up. The pneumatic undulation gate shown in FIG. 1 has three unit gates arranged side by side. The left and right ends of the three standing door bodies 22 are attached to the side ends of the door body 22 by presser plates 50 and presser bolts 51, with a side watertight rubber 49 that prevents water leakage from the gap between the side door stoppers 52. . Further, at the boundary between the three standing door bodies 22, an intermediate watertight rubber 38 for preventing water leakage from the gap between the adjacent door bodies 22 is pressed by the presser plate 39 and the presser bolt 40. Installed on the side edge.

この状態での中間水密ゴム38の状況や扉体22との関係を断面A−Aで示したものが図5並びに図6である。
図5の状態では、隣接した2個の扉体22は同調しており中間水密ゴム38は曲がっていないのであるが、隣接した扉体22が受ける荷重に偏りのある場合には、隣接した2個の扉体22が同調せず、起立または倒伏の進行に差が発生して断面A−Aが図6の状況となる。
いま、図6が起立操作中の断面A−Aであるとすれば、例えば右側の扉体22に堆砂が載った場合には右側の扉体22の起立が遅れて進行するので、左側の扉体22の起立が先行し中間水密ゴム38が斜めになって引張力を右側の扉体22に伝えることになる。
この中間水密ゴム38の引張力は、押え板39から押えボルト40を経由して右側の扉体22に伝えられる。同時に左側の扉体22に対してはその押えボルト40によって伝えられる。
FIG. 5 and FIG. 6 show the state of the intermediate water-tight rubber 38 in this state and the relationship with the door body 22 by a cross-section AA.
In the state of FIG. 5, the two adjacent door bodies 22 are synchronized and the intermediate watertight rubber 38 is not bent. However, if the load received by the adjacent door bodies 22 is uneven, The individual door bodies 22 do not synchronize, and a difference occurs in the progress of standing or lying down, so that the cross section AA becomes the situation of FIG.
Assuming that FIG. 6 is a cross-sectional view AA during the standing operation, for example, when sediment is placed on the right door body 22, the standing of the right door body 22 proceeds with a delay. The standing of the door body 22 precedes, and the intermediate watertight rubber 38 is inclined to transmit the tensile force to the right door body 22.
The tensile force of the intermediate watertight rubber 38 is transmitted from the presser plate 39 to the right door body 22 via the presser bolt 40. At the same time, it is transmitted to the left door body 22 by the presser bolt 40.

このように、隣接した扉体22に作用する荷重に大小の差が発生することは、流れの中心の偏りによる水面高の差や堆砂の偏りまたは流木の越流等により有り得るけれど中間水密ゴム38や押えボルト40に余り大きな応力を発生させることはない。
これに対し、起立している扉体22の背部に越流した流木が滞留してその位置の単位ゲートの扉体22の倒伏を阻害した状態で倒伏操作が行なわれると、倒伏を阻害された扉体22が阻害されない扉体22を中間水密ゴム38、押え板39、押えボルト40によって引留める事態となり、非常に大きな応力が発生する。
この時押えボルト40に作用する応力の算定は可能であるから、この応力において破断するボルトを押えボルト40として採用することが可能である。
すなわち、押えボルト40の破断強さの選択は下記aとbを総合して達成することができる。
a.ボルトの呼びと材質の選択
ボルトの呼びはM10,M12,M16等を選択し、材質は引留強さ
500N/mm2のステンレス鋼に対し65N/mm2の塩化ビニルを比較する等である。
b.ボルトの軸部に直径を細くした弱点を作る。
直径を70%にすれば、引張強さは約50%に低下する。
In this way, a large or small difference in the load acting on the adjacent door body 22 may be caused by a difference in the water surface height due to the deviation of the center of the flow, the deviation of sedimentation or the overflow of driftwood, etc., but the intermediate watertight rubber 38 or the presser bolt 40 does not generate a large stress.
On the other hand, when the falling operation was performed in the state where the driftwood overflowed on the back of the standing door body 22 and the fall of the door body 22 of the unit gate at that position was inhibited, the lodging was inhibited. The door body 22 that is not obstructed by the door body 22 is held by the intermediate watertight rubber 38, the presser plate 39, and the presser bolt 40, and a very large stress is generated.
At this time, since the stress acting on the presser bolt 40 can be calculated, a bolt that breaks at this stress can be adopted as the presser bolt 40.
That is, the selection of the breaking strength of the presser bolt 40 can be achieved by combining the following a and b.
a. Bolt Nominal and Material Selection Bolt Nominal is selected from M10, M12, M16, etc., and the material is 65N / mm 2 vinyl chloride compared to stainless steel with a tensile strength of 500 N / mm 2 .
b. Make a weak point with a reduced diameter on the shaft of the bolt.
If the diameter is 70%, the tensile strength is reduced to about 50%.

図7に軸部に細い弱点部53を作ったボルトの説明図を示す。このボルトを押えボルト40として使用した場合、洪水時に流木等によって一部扉体22に倒伏阻害が生じて単位ゲートの境界に大きな応力が作用して押えボルト40が破断した場合、扉体22に設けた雌ねじにねじ込まれた雄ねじ部での破断の場合より、破断したボルトの除去が容易であって、復旧作業が迅速に安価に終了する利益がある。 FIG. 7 shows an explanatory diagram of a bolt in which a thin weak point portion 53 is formed in the shaft portion. When this bolt is used as the presser bolt 40, if a part of the door body 22 is prevented from falling down due to driftwood or the like during a flood and a large stress acts on the boundary of the unit gate and the presser bolt 40 breaks, The broken bolt is easier to remove than the case of breaking at the male screw portion screwed into the provided female screw, and there is an advantage that the restoration work can be completed quickly and inexpensively.

鋼製起伏ゲートでは、洪水時に扉体の下流側に流木や土石等が滞留して扉体の倒伏を阻害した結果、洪水が安全に流下できずに堤防を越えて市街地に流入して大きな被害が発生した記録がある。
このような事故は極く稀ではあっても、一度発生すると重大な社会問題となるから、可能性を少しでも排除して、安全性を完全なものに近づける技術が必要である。
その意味で、この発明の空圧式起伏ゲートによれば、万一、一部の扉体の倒伏が阻害された場合にも、他の扉体が倒伏して洪水の流下する可能性を従来になく効果的に拡大する技術が提供されることになった。
このことは、日本のように急流部の多い河川に多数の取水設備を設けている社会にとって有意義であり、利用の可能性は非常に大きいと思われる。
In the steel undulation gate, driftwood and debris stayed in the downstream side of the door during flooding and hindered the fall of the door. As a result, the flood could not flow safely and flowed over the embankment into the city area, causing significant damage. There is a record that occurred.
Even if such an accident is extremely rare, once it occurs, it becomes a serious social problem. Therefore, a technology that eliminates the possibility as much as possible and brings safety close to perfection is necessary.
In that sense, according to the pneumatic undulation gate of the present invention, in the unlikely event that the fall of some doors is obstructed, the possibility that other doors will fall and flood will flow down in the past. The technology to expand effectively was to be provided.
This is significant for a society that has a large number of water intake facilities in rivers with a lot of rapids like Japan, and the possibility of use is considered to be very large.

この発明の空圧式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正面図(視点上流側)である。FIG. 3 is a front view of the pneumatic undulation gate according to an embodiment of the present invention in a state where the undulation gate is raised (upstream side of the viewpoint). 空圧式起伏ゲートが起立した状態の断面図である。It is sectional drawing of the state which the pneumatic type relief gate stood up. 空圧式起伏ゲートが倒伏した状態の断面図である。It is sectional drawing of the state which the pneumatic type relief gate fell down. 空圧式起伏ゲートが起立した状態の単位ゲートの境界部の断面図である。It is sectional drawing of the boundary part of a unit gate in the state where the pneumatic relief gate stood up. 中間水密ゴムの正常な取付状態の説明図である。It is explanatory drawing of the normal attachment state of intermediate | middle watertight rubber | gum. 隣接する扉体の間で開度に差が生じた結果、中間水密ゴムが大きく歪んだ状態の説明図である。It is explanatory drawing of the state which the intermediate | middle watertight rubber | gum was largely distorted as a result of having produced the difference in the opening degree between adjacent door bodies. 軸部に細い弱点部を作ったボルトの説明図である。It is explanatory drawing of the volt | bolt which made the weak weak part in the axial part.

符号の説明Explanation of symbols

1 コンクリートの上面
2 アンカーボルト
3 主押え板
4 空気袋
5 縁
6 縁
7 繋留板
8 上流の縁
9 ゴム引布
10 ロッド
11 折返し定着部
12 角
13 ロッド
14 折返し定着部
15 凹部
16 ゴム引布
17 ロッド
18 折返し定着部
19 上流側
20 ナット
21 下流の縁
22 鋼板製の扉体
23 下端
24 押え板
25 ボルト
26 ロッド
27 折返し定着部
28 コンクリートの上面
29 アンカーボルト
30 押え板
31 引留帯
32 ボルト
33 押え板
34 ロッド
35 折返し定着部
36 曲げ加工部
37 支持台
38 中間水密ゴム
39 押え板
40 押えボルト
41 口金
42 空気管
43 排気用開閉弁
44 排気用流量調節弁
45 排気放出部
46 給気用開閉弁
47 給気用流量調節弁
48 空気圧縮機
49 側面水密ゴム
50 押え板
51 押えボルト
52 側面戸当
53 弱点部
DESCRIPTION OF SYMBOLS 1 Top surface of concrete 2 Anchor bolt 3 Main presser plate 4 Air bag 5 Edge 6 Edge 7 Anchoring plate 8 Upstream edge 9 Rubber pulling cloth 10 Rod 11 Folding fixing part 12 Corner 13 Rod 14 Folding fixing part 15 Recessed part 16 Rubber drawing cloth 17 Rod 18 Folding fixing portion 19 Upstream side 20 Nut 21 Downstream edge 22 Steel plate door body 23 Lower end 24 Presser plate 25 Bolt 26 Rod 27 Folding fixing portion 28 Concrete upper surface 29 Anchor bolt 30 Holding plate 31 Retention band 32 Bolt 33 Presser Plate 34 Rod 35 Folding fixing portion 36 Bending portion 37 Support base 38 Intermediate watertight rubber 39 Press plate 40 Presser bolt 41 Base 42 Air pipe 43 Exhaust on / off valve 44 Exhaust flow control valve 45 Exhaust discharge unit 46 Inlet on / off valve 47 Flow control valve for air supply 48 Air compressor 49 Side watertight rubber 50 Presser plate 51 Presser bolt 52 Side Toto 53 weak spot

Claims (3)

断面が長方形の水路の底を横断して並べて設置したアンカーボルトと主押え板とが、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の開いた辺の縁を、ゴム引布製の扉体繋留板の上流側の縁を介して、水路の底に押し付けることによって、開いた辺を密閉しつつ、水路の底に空気袋と扉体繋留板を固定し、
加えて扉体繋留板の下流側の縁に、鋼板製の扉体の上流面の下端部をボルトと押え板により取り付けることによって、鋼板製の扉体が水路の底に起伏自在に取り付けられると同時に、鋼板製扉体の下流側の根元部分に空気袋が位置し、鋼板製の扉体を枕状に支持するようにした上で、
陸上の空気操作装置から空気袋に空気管を接続し、空気袋の内部に空気操作装置から圧縮空気を送入すれば空気袋が膨張して鋼板製の扉体を起立させ、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ゲート幅の小さい(2〜5m程度)空圧式起伏ゲートを単位ゲートとして、扉体の起伏時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(10〜200m程度)水路の起伏ゲートとした空圧式起伏ゲートにおいて、
隣接する扉体の側端部に重ねた位置にあり押え板と押えボルトによって固定して、両扉体の間に生ずる隙間からの漏水を防止しつつ、両扉体を1体に結合する中間水密ゴムの押えボルトの強度を、ボルトの材質の選択やボルトの軸部に加工した直径減少部によって適当な値に設定することにより、中間水密ゴムによる両扉体の連結部は、通常の起伏操作時の相対的な先行遅行による張力や堆砂の通常程度の偏りにより扉体群全体としての捩れを生ずる時等に中間水密ゴムに作用する通常時の張力に対しては必要な強度を保有するものの、一部の扉体の下流側に流木や土石が介在して倒伏が不可能となった時には、中間水密ゴムに作用する大きな張力によって押えボルトが破断して両扉体間の連結を解放することにより、流木や土石による倒伏の阻害を受けない単位ゲートの扉体の倒伏を可能にするようにしたことを特徴とする空圧式起伏ゲート。
The edge of the open side of the rubber-filled air bag made of a flat rectangle with three sides closed and one side open, with anchor bolts and main presser plates placed side by side across the bottom of the rectangular channel The air bag and the door body anchoring plate are fixed to the bottom of the waterway, while the open side is sealed, by pressing the door to the bottom of the waterway through the upstream edge of the rubber body cloth door body anchoring plate,
In addition, when the lower end of the upstream surface of the steel plate door body is attached to the downstream edge of the door body anchoring plate with a bolt and a presser plate, the steel plate door body is attached to the bottom of the water channel in a freely undulating manner. At the same time, an air bag is positioned at the base portion on the downstream side of the steel plate door body, and the steel plate door body is supported in a pillow shape,
If an air pipe is connected to the air bag from the air operating device on land, and the compressed air is sent from the air operating device to the inside of the air bag, the air bag expands to raise the steel plate door, and conversely When air with pressure is discharged from the air pump, when the door body is raised and lowered, using a pneumatic gate with a small gate width (about 2 to 5 m) that allows the air bag to contract flat and the door body to fall down. In the pneumatic undulation gate as the undulation gate of a large channel (about 10-200 m) by installing it side by side in the extending direction of the rotation center of
An intermediate where the two door bodies are combined into one body while being secured to the side edge of the adjacent door body and fixed by a presser plate and a presser bolt to prevent water leakage from the gap between the door bodies. By setting the strength of the watertight rubber presser bolt to an appropriate value by selecting the material of the bolt and reducing the diameter of the bolt shaft, the joint between the two door bodies with the intermediate watertight rubber can be It possesses the required strength for normal tension acting on the intermediate watertight rubber when the entire door body group is twisted due to the tension due to the relative advance delay during operation and the normal deviation of the sediment. However, when driftwood or debris is not available on the downstream side of some door bodies, it becomes impossible to incline, and the presser bolt breaks due to the large tension acting on the intermediate watertight rubber, and the two door bodies are connected. By releasing, lodging by driftwood and debris Pneumatic relief gates, characterized in that so as to allow the lodging of a door body of the unit gate not subject to inhibition.
請求項1の空圧式起伏ゲートにおいて、
断面が長方形の水路の底を横断して並べて設置したアンカーボルトの代りの、水路の底を横断して設置したアンカー金物に並べて設けた雌ねじにねじ込むボルトと主押え板とが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の開いた辺を、ゴム引布製の扉体繋留板の上流側の縁を介して、水路の底に押し付けることによって、開いた辺を密閉しつつ、水路の底に空気袋と扉体繋留板を固定したことを特徴とする空圧式起伏ゲート。
The pneumatic relief gate of claim 1,
Instead of anchor bolts installed side by side across the bottom of a channel with a rectangular cross section, the bolt and the main presser plate that are screwed into the female screw provided side by side on the anchor hardware installed across the bottom of the channel are closed on one side 1 Open side by pressing the open side of the rubber-clothed air bag made into a flat rectangle with open sides against the bottom of the water channel through the upstream edge of the rubber-bound fabric door anchoring plate A pneumatic hoisting gate characterized in that an air bag and a door anchoring plate are fixed to the bottom of the water channel while sealing the air.
請求項1または2の空圧式起伏ゲートにおいて、
扉体を水路の底に起伏自在に取り付けるゴム引布製の扉体繋留板の代りに、主押え板の下流の縁から突出した軸受と扉体下端部の軸受とを回転軸で起伏自在に結合したことを特徴とする空圧式起伏ゲート。
The pneumatic undulation gate according to claim 1 or 2,
Instead of a rubber-clothed door anchoring plate that attaches the door body to the bottom of the waterway, the bearing protruding from the downstream edge of the main presser plate and the bearing at the lower end of the door body can be connected in an up-and-down manner with a rotating shaft. Pneumatic undulation gate characterized by
JP2005041141A 2005-02-17 2005-02-17 Pneumatic undulation gate Expired - Fee Related JP4370620B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009035984A (en) * 2007-08-03 2009-02-19 Iida Tekko Kk Pneumatic derricking gate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009035984A (en) * 2007-08-03 2009-02-19 Iida Tekko Kk Pneumatic derricking gate

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