JP2005200987A - Pneumatically operated roof gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive pneumatically-operated roof gate wherein an air bag can be stably sealed and and the air bag and a mooring plate can be fixed to each other. <P>SOLUTION: A folding fixture section 14 of a reinforcing fiber using a resin-made rod is provided to each edge end of two rubber coated clothes on the sides of the opened air bag 4 and the mooring plate 7, the lower rubber coated cloth of the air bag is ensured to a corner of a concrete surface, the mooring plate is ensured to a recess section in a lower corner on the upstream side of a main holding plate, and the upper rubber coated cloth of the air bag is ensured to the side on the upstream side of the folding fixture section so that they can be stably fixed. Additional fastening work of a bolt can be thereby facilitated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

This invention is a kind of undulating gate used for the purpose of hoisting or discharging the flowing water of a water channel by allowing the door body to stand up or lie down freely by a rotation center provided at the bottom of the water channel, and is a door made of steel plate If compressed air is fed into a pillow-shaped air bag located at the base of the body on the downstream side from an air operating device on land, the air bag expands and the door body rises. Of the pneumatic hoisting gates that allow the air bag to flatten and the door body to fall when the air with pressure is discharged from the bag, the upstream edge is anchored to the bottom of the water channel by the anchor bolt and the holding plate. The lower end of the upstream surface of the door body is fixedly attached to the downstream edge of the rubberized cloth anchoring plate fixed to the door, and the door body is connected to the bottom of the waterway so that it can be raised and lowered. .

In this type of pneumatic undulation gate, there is one rubberized cloth as a tether, and one rubberized cloth on the open side of the air bag. It is fixed to the water channel bottom by pressing it against the water channel bottom with the presser plate, and at the same time the open side of the air bag is sealed. When pressing 3 rubberized cloths with one main presser plate, rubber creep Due to the looseness of the presser foot due to the phenomenon, problems such as incomplete sealing and pulling out three rubberized cloths from a predetermined position occur.
Nothing in particular

The conventional pneumatic undulation gate of this type has a structure in which a total of three rubberized cloths, including the tether plate and the open side of the air bag, are simply pressed, but it has an effective height of about 1 m due to the rubber creep phenomenon. It was applicable only to. Therefore, the edge of the open side of the air bag is pressed against the bottom of the water channel with the anchor bolt and the main presser plate, the air bag is fixed to the bottom of the water channel while sealing the open side, and then the anchor plate is attached to the main presser plate. A two-stage method is used in which the upstream edge is fixed by another presser plate and an anchor bolt.

However, this method uses two presser plates and two groups of anchor bolts, so the structure is complex and not only inferior in economic efficiency, but also when the main presser plate is held down by the anchor bolts, tightening work There was a drawback that it was difficult.

That is, with a group of anchor bolts and a presser plate, a total of three rubberized cloths, including the tether plate and the open side of the air bag, are pressed against the bottom of the waterway and securely fixed to the bottom of the waterway. Therefore, there is a need for a method that can seal the open side of the wire, is less susceptible to the effects of creep, is economical, and can be tightened with anchor bolts as needed.

Therefore, in the pneumatic undulation gate of the present invention, the reinforcing fibers are folded at the edges of the two rubberized cloths on the open side of the air bag and the upstream and downstream edges of the tether with resin rods. A fold-back fixing portion for reinforcing fibers that protects the bending radius from becoming excessively small is provided.

And, the folding fixing part of the edge of the rubberized cloth under the open side of the air bag is hung on the corner on the downstream side of the grooved part on the upper surface of the concrete so that it is not pulled out from the predetermined position, A rubberized cloth on the open side of the air bag at the same time that the folding and fixing part at the upstream edge of the anchoring plate is ensured not to move upward or laterally by the recess at the lower corner on the upstream side of the main presser plate. Adopt a structure in which the folded-back fixing part at the edge of the hook hooks on the upstream side of the folded-back fixing part at the upstream edge of the anchoring plate, and both are not pulled out from the predetermined position by the main presser plate and the anchor bolt. I made it.

When the main presser plate is strongly pressed by the nut into which the anchor bolt is screwed after being configured in this way, the three rubberized cloths are fixed to the bottom of the water channel, and at the same time, the open side of the air bag is sealed.
In this case, the three rubberized fabrics are secured so that they are not pulled out from the predetermined positions by the folding fixing portions at the respective edges, so that even if slight creep occurs, the effect is minimal. Can be stopped. Further, in this structure, the main presser plate, anchor bolt, and nut are exposed on the surface, so that the main presser plate can be retightened at any time and maintenance is easy.

According to the pneumatic undulation gate of the present invention, the anchoring plate and the fixing portion at the open side of the air bag adopt a method of winding a reinforcing fiber excellent in workability around a resin rod and turning it back. Since the folding fixing part of the anchoring plate secured by the structure further secures the folding fixing part of the rubberized cloth on the open side of the air bag, the air bag sealing and fixing of the air bag and the anchoring plate are sufficiently stable Therefore, a very inexpensive pneumatic undulation gate can be provided.
In addition, the adoption of a single main presser plate that is pressed by a nut that is screwed into a row of anchor bolts is simple in structure and excellent in economic efficiency, and at the same time, the riverbed head that is structurally required at the fixed part of the pneumatic relief gate It became possible to make the gate smaller and it became a gate that was easy to adopt in the overall plan of rivers.
Furthermore, since the nut of the anchor bolt is always exposed to the riverbed surface, it becomes easy to cope with the creep phenomenon by tightening work as needed, and a pneumatic undulation gate excellent in maintenance management can be provided.

Embodiments of a pneumatic undulation gate according to the present invention will be described below in detail with reference to the drawings.
1, 2, 3, 4, 5, and 6 show one embodiment of the pneumatic undulation gate of the present invention. FIG. 1 is a rear view of the pneumatic undulation gate, and FIG. FIG. 3 is a sectional view showing a lying state, FIG. 4 is an explanatory view of a door body, FIG. 5 is an explanatory view of an air bag, and FIG. 6 is an edge of a rubberized cloth. It is explanatory drawing of the cross section of the edge folding fixing | fixed part. 7 is a sectional view according to another embodiment of the pneumatic undulation gate of the present invention, showing a standing state, FIG. 8 is a sectional view showing a lying state, and FIG. 9 is an explanatory view of an air bag.

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 tether 7 made of rubberized cloth. 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.

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.

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.

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 not pulled out from a predetermined position by the main presser plate 3 and the anchor bolt 2.

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 anchoring plate 7 are fixed to the bottom of the water channel while sealing the open side of the air bag 4.

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.

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. When the steel plate door body 22 stands up and the air bag 4 contracts flatly, the steel plate door body 22 falls down.

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.

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. So that it cannot be pulled out from a predetermined position.

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.

As shown in FIG. 4, the steel door 22 has a width direction slightly smaller than the weir width and a length necessary for securing a standing height required for standing, Is provided with a bending portion 36.
Further, the lower end 23 is processed into a semicircular shape so that the lower end 23 moves smoothly on the air bag 4 during the standing and lying movement, and a female screw 38 for screwing a bolt 25 for fixing the downstream edge 21 of the anchoring plate 7 along the lower end 23 is provided. It is lined up in a row.
Above that, there is a female screw 39 into which a bolt 32 for fixing the retaining band 31 is screwed.

As shown in FIG. 5, when the air is discharged, the size of the open side of the air bag 4 manufactured to be a flat rectangle is slightly smaller than the gate width, and in the direction perpendicular to this, the air bag 4 is expanded. The door body 22 has a size sufficient to push up the door.
The rubberized cloth is continuously bent and closed on three sides other than the open side to be pressed by the main presser plate 3. Further, at the open side, the reinforcing fiber folded back protected by the resin rods 10 and 17 so that the bending radius of the reinforcing fiber is not too small at the ends of the edges 5 and 6 of the two rubberized cloths facing each other. There are fixing portions 11 and 18. Further, a hole 40 through which the anchor bolt 2 passes in parallel with the folded fixing portions 11 and 18 passes through the edges 5 and 6 of the two rubberized cloths. A base 41 is attached near the center of the rubberized cloth below the air bag 4.

With this configuration, the air pipe 42 connected to the base 41 at the lower part of the air bag 4 is led to the land by burying it in the concrete of the water channel, and the exhaust on-off valve 43 of the air operating device, the exhaust flow rate adjustment 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.

Then, as a result of press-fitting air from the air compressor 48 into the air bag 4 through the air supply flow rate adjustment valve 47, the air supply on / off valve 46, the air pipe 42, and the base 41, the door body 22 stands up. FIG. 2 is a cross-sectional view of this state, and the bending portion 36 of the head of the door body 22 functions so as to guide the overflowing water downstream and not hit the air bag 4 or the band 31.
FIG. 1 shows this state viewed from the downstream side, and the air bag 4 is on the back side of the door body 22 and supports the door body 22 in almost the entire width.

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.

FIG. 6 is a detailed explanatory view of the folding fixing portion provided at the edge of the rubberized cloth. The rubberized cloth has a structure in which the reinforcing fiber 50 is protected between the upper and lower outer layer rubbers 49, and the strength is significantly improved as compared with the outer layer rubber 49 alone. Since the integrity of the reinforcing fiber 50 cannot be maintained, a fixing reinforcing fiber 52 attached to the reinforcing fiber 50 is provided with an appropriate length after the reinforcing fiber 50 is wrapped around the resin rod 51 and folded back. Cover with a rubber fixing cloth folding fixing part.
Since the folded fixing portion is strongly pressed by the presser plate and the bolt, the fixing effect of the fixing reinforcing fiber 52 becomes reliable.

7, 8 and 9 show another embodiment of the pneumatic undulation gate according to the present invention. FIG. 7 is a sectional view of the pneumatic undulation gate and shows a standing state, and FIG. 8 shows the pneumatic undulation. A sectional view of the gate shows a lying state, and FIG. 9 is an explanatory view of an air bag.
7 and 8, the anchor bolts 2 arranged side by side across the water channel are arranged on the downstream side of the main presser plate 60 in the groove-like portion 65 on the upstream side of the concrete upper surface 1 at the bottom of the water channel having a rectangular cross section. The edges 5 and 6 of the open side of the air bag 62 made of rubber-cloth cloth and the upstream side of the tether 7 made of rubber-cloth cloth are formed in a flat rectangle with three sides closed and one side opened by the protrusion 61 below the edge. By pressing the three edges 8 together against the concrete upper surface 1 of the water channel bottom, the open side of the air bag 62 is sealed, and at the same time, the air bag 62 and the tether 7 are fixed to the water channel bottom.

At the end of the edge 5 of the rubberized cloth 9 below the open side of the air bag 62, there is a folded back portion of the reinforcing fiber protected by the resin rod 10 so that the bending radius of the reinforcing fiber is not too small. Yes, it is prevented from being pulled out from a predetermined position by the tension acting on the downstream corner 12 of the groove-like portion 65 on the upstream side of the upper surface 1 of the concrete at the bottom of the water channel due to the tension applied by the rubberized cloth 9.
Further, at the end of the upstream edge 8 of the anchoring plate 7, there is a reinforcing fixing portion 14 of the reinforcing fiber which is protected by the resin rod 13 so that the bending radius of the reinforcing fiber is not too small, and downstream of the main presser plate 60. Since it is ensured that it does not move upward or laterally by the concave portion 63 of the base portion on the upstream side of the protrusion 61 below the side edge, it is not pulled out from a predetermined position by the tension acting on the anchoring plate 7. To.
At the same time, at the end of the edge 6 of the rubberized cloth 16 above the open side of the air bag 61, the reinforcing fiber folded and fixed portion 18 is protected by a resin rod 17 so that the bending radius of the reinforcing fiber is not excessively small. It is hung on the upstream side 19 of the folded fixing portion 14 of the edge 8 on the upstream side of the anchoring plate 7 so that the rubber pulling cloth 16 is not pulled out from a predetermined position.
That is, the rubber pulling cloth 16 above the anchoring plate 7 and the air bladder 62 is not pulled out from a predetermined position by the main presser plate 60 and the anchor bolt 2.

Furthermore, a downward protrusion 64 reaches the bottom of the groove-like portion 65 on the upstream side of the upper surface 1 of the concrete at the upstream edge of the main presser plate 60, and the downstream side with the anchor bolt 2 in between. Since it is opposed to the protrusion 61 below the side edge, the pressing effect by the anchor bolt 2 and the nut 20 is very excellent.

After the construction as described above, the nuts 20 screwed into the anchor bolts 2 are used to connect the protrusions 61 below the downstream edge of the main presser plate 60 to the anchoring plate 7, the rubberized cloth 9 on the open side of the air bag 62, and The air bag 62 and the tether plate 7 are fixed to the bottom of the water channel while the open side of the air bag 62 is sealed by pressing the three rubber-stretched cloths 16 against the upper surface 1 of the concrete at the bottom of the water channel.

This embodiment is different from the embodiments described in FIGS. 1, 2, 3, 4, 5, and 6 in that
1) A hole through which the anchor bolt 2 penetrates as shown in FIG. 9 by moving the position of the anchor bolt 2 to the upstream side from the folding fixing portion of the edge of the rubberized cloth on the side where the air bag 62 is open. Has been improved to reduce the risk of leaks,
2) As well as the main presser plate 60, the width of the main presser plate 60 is remarkably increased compared to the main presser plate 3, and at the upstream edge thereof, a protrusion 64 reaching the bottom of the groove portion of the concrete is provided, and at the same time, By providing a protrusion 61 of an appropriate size downward at the edge, a total of three rubberized fabrics including the anchor plate 7 and the rubberized fabric on the open side of the air bag 62 are joined together on the upper surface of the concrete at the bottom of the waterway. I pushed it to 1
These are two items.
In this embodiment, the stability of the main presser plate 60 by the anchor bolt 2 and the nut 20 is excellent, so that it can be adopted even in a large gate having an effective height exceeding 3 m.

The pneumatic undulation gate of the present invention is an air used for the purpose of weiring or discharging the flowing water of a river or waterway by allowing the door body to stand up or fall freely by a rotation center provided at the bottom of the river or waterway. It can be used as a pressure relief gate.
Conventionally, this type of pneumatic undulation gate has been used as an economical gate, but due to the flexibility of the rubberized fabric and the creep phenomenon, it is possible to securely fix the air bag and fixing rubber for a long period of time. It was insufficient. However, with the pneumatic undulation gate of the present invention, since a group of anchor bolts and main presser plate can be used to secure a rubberized cloth from a small gate to a large gate with an effective height exceeding 3m, It is now possible to provide a pneumatic undulation gate with high reliability, safety and easy maintenance.

It is a rear view of the state which showed one Example of the pneumatic undulation gate of this invention, and the undulation gate stood up. It is sectional drawing of the state which the pneumatic type relief gate stood up. It is sectional drawing of the state which the pneumatic type relief gate fell down. It is explanatory drawing of the door body of a pneumatic undulation gate. It is explanatory drawing of the air bag of a pneumatic undulation gate. It is sectional explanatory drawing of the folding fixing | fixed part of the edge of a rubberized cloth. It is a rear view of the state which showed the other Example of the pneumatic undulation gate of this invention, and the undulation gate stood up. It is sectional drawing of the state which the pneumatic type relief gate fell down. It is explanatory drawing of the air bag of a pneumatic undulation gate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concrete top surface 2 Anchor bolt 3 Main presser plate 4 Air bag 5 Edge 6 Edge 7 Anchor plate 8 Upstream edge 9 Rubber pulling cloth 10 Rod 11 Folding fixing part 12 Corner 13 Rod 14 Folding fixing part 15 Recess 16 Rubber drawing cloth 17 Rod 18 Folding fixing part 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 part 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 Female screw 39 Female screw 40 Hole 41 Cap 42 Air pipe 43 Exhaust on / off valve 44 Exhaust flow control valve 45 Exhaust discharge part 46 Inlet open / close valve 47 For air supply Flow control valve 48 Air compressor 49 Outer rubber 50 Reinforcing fiber 51 Rod 52 Reinforcing reinforcing fiber 60 Main presser plate 61 Protrusion 62 Air bag 63 Recess 64 Protrusion 65 Grooved portion

Claims (3)

Anchored in a vertical anchor bolt installed side by side across the bottom of a channel with a rectangular cross section, along the open side of an air bag made of rubberized fabric made into a flat rectangle with three sides closed and one side open Bolt holes are made according to the arrangement of the bolts, and the air bag is attached to the anchor bolts and installed on the concrete upper surface of the water channel.
On top of that, put a rubberized cloth tether plate with bolt holes that are also opened according to the arrangement of anchor bolts, and further place a main presser plate with bolt holes that are also opened according to the arrangement of anchor bolts. By firmly pressing the main presser plate with a nut screwed into the anchor bolt from above, the air bag, the tether plate and the main presser plate are fixed to the upper surface of the concrete at the bottom of the water channel while sealing the open side of the air bag. .
Position where the downstream edge of this tether plate follows the lower end on the upstream side of the door made of steel plate having a width direction slightly smaller than the weir width and a length necessary for securing the standing height required for standing By firmly fixing the door body to the bottom of the water channel, the door body is anchored in an up-and-down manner, and at the same time, water leakage between the upper surface of the concrete and the door body is prevented.
In addition, the other end of the retaining band made of rubber-stretched cloth with sufficient strength, with one end fixed by anchor bolts and retaining band presser plate installed in concrete at an appropriate position downstream of the air bag at the bottom of the waterway By fixing the bolt and the retaining band holding plate at an appropriate position above the air bag on the downstream side of the body, the door is lifted by the tension acting on the retaining band when the door body stands up to a predetermined position. Let the body stop.
With this configuration, if an air tube is connected to the air bag from the air operating device on land, and compressed air is sent into the air bag from the air operating device, the air bag expands and the door body is raised. On the contrary, in the pneumatic hoisting gate where the air bag contracts flatly when the air having pressure is discharged from the air bag and the door body falls down,
The edge of the two rubberized cloths on the open side of the air bag and the upstream and downstream edges of the tether are protected by resin rods so that the bending radius of the reinforcing fiber is not too small. A folded back fixing portion is provided.
At this time, it is ensured that the folding fixing portion at the upstream edge of the anchoring plate does not move upward or laterally by the concave portion at the upstream lower corner of the main presser plate, and at the same time, the rubber on the open side of the air bag Both ends of the pulling cloth are pulled out from a predetermined position by a recess in the lower corner on the upstream side of the main pressing plate so that the folding fixing portion on the edge of the anchoring plate is supported on the upstream side of the folding and fixing portion on the upstream edge of the tether. Do not.
In addition, the folded back fixing portion of the edge of the rubberized cloth under the open side of the air bag is hung on the downstream corner of the groove-like portion on the upper surface of the concrete so that it is not pulled out from a predetermined position. A pneumatic undulation gate characterized in that the folded-back fixing portion at the downstream edge of the anchoring plate is hung on a downstream corner of the retaining plate of the anchoring plate and is not pulled out from a predetermined position. In the pneumatic undulation gate according to claim 1, in order to avoid a hole through which an anchor bolt opened at a position along an open side of an air bag made of rubberized cloth from causing an air leak, At the same time as moving the position upstream from the folding fixing part of the edge of the rubberized cloth on the open side of the air bag, the width of the main presser plate is widened, and it is appropriate to downward toward the upstream and downstream edges. By providing a protrusion with a sufficient height, the downstream protrusion is pressed against the concrete on the bottom of the water channel by pressing the rubber strips of the tether plate and the air bag together, and at the same time, by the recess at the base of the upstream. The upstream edge of the anchoring plate is secured so that it does not move upward or laterally, and the upstream protrusion is directly supported by the concrete at the bottom of the water channel on the upstream side of the anchor bolt, and the downstream protrusion Effect by pressing Pneumatic undulating gate, characterized in that it was so that. The pneumatic undulation gate according to claim 1 or 2, wherein a bolt and a main presser plate that are screwed into a female screw installed side by side on an anchor hardware installed across the water channel bottom, instead of an anchor bolt installed side by side across the water channel bottom, However, by pressing the edge of the open side of the rubberized cloth air bag and the upstream edge of the rubberized cloth anchoring plate against the bottom of the water channel, the air bag and the connecting plate are sealed while sealing the open side of the air bag. Pneumatic undulation gate characterized in that is fixed to anchor hardware.

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