JP2002309547A - Flap gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flap gate being constructible at very low cost, while solving technical problems of various gates currently in development and use, from the standpoint of their own advantages and disadvantages. SOLUTION: The flap gate which is very inexpensive and easy to handle can introduce economical efficiency equivalent to those of rubber dams, by continuously supporting external forces by means of an air bag in the width direction of the gate, while utilizing the advantages of a conventional flap gate constructed of a steel door: that it is resistant to external forces (hydraulic forces and impact forces or the like received from flowing matter); that it has wear resistance; and that it is stable even in an intermediate upstanding attitude.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an up / down gate used for raising or discharging flowing water in a waterway by freely rising or falling by a rotating shaft provided at the bottom of the waterway. .

[0002]

2. Description of the Related Art Conventionally, as an undulating gate, a wire rope or a chain is attached to a head of a steel door body in which a horizontal girder or a vertical girder is arranged sufficiently strong against a steel plate (water stoppage plate) subjected to water pressure. Then, this is taken up or unwound by a land hoist and operated to stand or fall, or a similar steel door is pushed up with a hydraulic jack to stand up, and the hydraulic jack is contracted to fall down Various types have been developed and used.

In recent years, a rubber cylinder reinforced with cloth has been fixed to a channel floor so as to withstand internal air pressure and external force (such as water pressure and impact force received from a falling object), and air is press-fitted into the inside. Then, the rubber cylinder expands and dams the running water.On the contrary, the air having the internal pressure is opened and released by opening the on-off valve, so that the rubber cylinder is flattened and collapsed by its own weight and the water pressure. So-called rubber weirs, from which water flows out, have been developed and widely used.

[0004]

By the way, the type in which the undulating operation is performed by a wire rope or a chain attached to the head of a steel door body reinforced by a horizontal girder and a vertical girder has good operability. Although it is stable even in an intermediate standing position, it is not suitable for a large undulating gate, and construction costs are high.

A type in which a steel door body reinforced by sufficiently strong horizontal and vertical girders is pushed up by a hydraulic jack has good operability and is stable even in an intermediate standing posture. Gate and gate width is 30-40
It is a highly safe undulating gate that not only can adopt a size considerably larger than m but also is not easily damaged by earth and sand, boulders, driftwood, drift ice and the like. However, there is a disadvantage that the construction cost is high. In particular, the manufacture, transportation and installation of a slender and heavy steel door are major causes of high construction costs. In addition, if the operating oil leaks, there is a danger of fouling waterways and causing social problems.

[0006] Another major advantage of the rubber weir is that its construction cost is lower than that of the steel gate gate. Nevertheless, when constructing a large waterway, the process of manufacturing a slender and heavy rubber tube in a factory and transporting and installing it without damage on the site requires a lot of technical difficulties and a lot of cost. Become.

Further, even though the rubber weir is reinforced with several layers of cloth, it is easily damaged by earth and sand, boulders, driftwood, and drifting ice flowing down with water, and it is necessary to constantly monitor and perform repair work. Economy.

[0008] In addition, the flexible door of the rubber weir has a serious technical disadvantage that it is unstable in the intermediate inflated state and cannot maintain a uniform intermediate standing state over the entire width. That is, the tubular door body becomes unstable in the intermediate inflated state,
If a partial collapse precedes, only the collapse at that location proceeds and a partially collapsed posture occurs, so that the raised water flows out of the location and cannot maintain the water surface upstream of the gate.

Although the present invention has developed and used a wide variety of gates as described above, it solves the technical problems and at the same time remarkably solves the current situation that has advantages and disadvantages. It is intended to provide an undulating gate which can be constructed at a low cost.

[0010]

That is, the undulating gate of the present invention is strong against external force (such as water pressure and impact force from a falling object) of the undulating gate formed by a conventionally used steel door, and is resistant to wear. Very low cost that succeeded in introducing the same economics as a rubber weir that supports the gate continuously in the width direction with an air bag while taking advantage of the fact that it is stable and stable even in the middle standing position The gate is easy to handle.

The details will be described below. That is, a vertical anchor bolt and a bearing presser plate, which are installed in a row across the bottom of a rectangular waterway, are crushed into a flat rectangle when air is discharged. By pressing the open side of the airbag made of drawing cloth against the bottom of the waterway, the open side is sealed and the airbag is fixed to the bottom of the waterway, and at the same time, the bearing protruding on the downstream side of the bearing / holding plate In addition, an undulating gate having a very simple structure in which a bearing protruding from the lower end of a steel plate door is freely rotatably mounted on a rotating shaft is adopted.

In the undulating gate configured as described above, the air bag made of rubberized cloth is located at the root portion downstream of the door, and continuously supports the door over its entire width.
The door body does not require lateral stiffening girders. Therefore,
The thickness of the door body can be made smaller than the thickness of the bearing / holding plate. Furthermore, the open side of the airbag made of a rectangular rubber cloth having three sides closed and one side opened with the bearing / compressing plate pressed against the bottom of the waterway to fix the airbag to the bottom of the waterway while sealing tightly. Therefore, the rotating shaft and the bearing can be provided with necessary functions with small dimensions. That is, in this structure, 1
The bearing presser plate fixed to the bottom of the waterway by the row of anchor bolts serves three functions: a) sealing and fixing the air bag; b) fixing the door body up and down; This enabled a very simple structure.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an undulating gate according to an embodiment of the present invention. Figure 1,
FIGS. 2, 3, 4 and 5 show one embodiment of the undulating gate according to the present invention. FIG. 1 is a rear view of the undulating gate, and FIG. FIG. 3 is a cross-sectional view of the undulating gate, showing an undulating state.
FIG. 5 is an explanatory view of an assembled state of a bearing / holding plate, a rotating shaft, and a door body, and FIG. 5 is an explanatory view of an air bag.

1, 2 and 3, a vertical anchor bolt 2 installed in a line across the water channel is mounted on a concrete upper surface 1 at the bottom of the water channel having a rectangular cross section by a bearing / holding plate 3. The open side of the air bag 4 is sealed by pressing the open side edge 5 of the air bag 4 against the concrete upper surface 1 at the bottom of the water channel.
Is fixed to the upper surface 1 of the concrete. At the end of the edge 5 of the open side of the air bag 4, there is a folded portion 7 of the reinforcing fiber protected by a resin rod 6 so that the bending radius of the reinforcing fiber is not too small. Corner 8 upstream of
In addition, on the upstream corner 9 of the upper surface 1 of the concrete, the edge 5 of the open side of the air bag 4 functions so as not to be pulled out by the tension acting on the air bag 4.

Further, the bearing 10 projecting downstream of the bearing / holding plate 3 is combined with the rotating shaft 13 in the concave portion 12 at the lower end of the door body 11, and at the same time, the bearing 14 projecting at the lower end of the door body 11 is provided with the bearing / holding press. The door body 11 is free to rotate with respect to the bearing holding plate 3 because the door body 11 is combined with the rotating shaft 13 in the concave portion 15 on the downstream side of the plate 3.

On the other hand, one side of one rubber plate 16 is
7 and bolts 18, which are fixed to the upper surface of the bearing / holding plate 3, and the other sides are held by the holding plate 19 and the bolts 20.
To prevent water leakage between the bearing / holding plate 3 and the door body 11. In addition, an anchor bolt 21 and a holding plate 22 installed at an appropriate position on the downstream side of the air bag 4 at the bottom of the waterway have one end connected to the concrete upper surface 2.
The other end of the rubber-coated cloth band 23 having sufficient strength fixed to 6 is fixed at an appropriate position above the position where the air bag 4 contacts the downstream surface of the door body 11 with the bolt 24 and the holding plate 25. By doing so, when the door 11 rises to the predetermined position, the door 11 is stopped by the tension acting on the band 23.

Next, the bent portion 27 of the head of the door body 11
At the time of standing, the water flowing over the door body 11 is guided to the downstream side to protect the water flowing over and the driftwood and the like flowing down from hitting the air bag 4 and the belt 23. In addition, at the time of falling down, the tip of the bent portion 27 of the head of the door body 11 is supported by the support base 28, and a necessary space is provided by the upper surface 1 of the concrete, the upper surface 26 of the downstream concrete, and the downstream surface of the door 11 As a result, the air bag 4 and the belt 23 are not crushed by the door 11.

As shown in FIG. 4, a bearing 10 protruding from the downstream edge of the bearing / holding plate 3 is combined with a rotating shaft 13 in a concave portion 12 at the lower end of the door body 11 and simultaneously protrudes from the lower end of the door body 11. 14 is a recess 15 at the downstream edge of the bearing / holding plate 3
At the same time, it is freely rotatable with each other. The bearing / holding plate 3 is provided with a counterbore hole 38 corresponding to the anchor bolt 2 and a female screw 39 corresponding to the bolt 18 for fixing one end of the rubber plate 16. Further, a bolt 20 for fixing the other end of the rubber plate 16 is provided on the door body 11.
And a hole 41 corresponding to the bolt 24 for fixing one end of the band 23.

As shown in FIG. 5, when the air is discharged, the air bag 4 manufactured so as to have a flat rectangular shape has an open side slightly smaller than the gate width and has a direction perpendicular to the gate width. , Have dimensions sufficient to push up the door 11 when inflated. On three sides other than the open side to be held by the bearing / holding plate 3, the rubberized cloth is continuously bent and closed. In the open side, the opposite 2
At the end of the edge 5 of the rubberized cloth, there is a folded portion 7 of the reinforcing fiber which is protected by a resin rod 6 so that the bending radius of the reinforcing fiber is not too small. Further, holes 29 through which the anchor bolts 2 penetrate are formed in parallel with the folded portions 7.
It passes through the edge 5 of a piece of rubberized cloth. A base 30 is attached near the center of the rubber cloth on the lower side of the air bag 4.

With the above construction, the air pipe 37 connected to the base 30 below the air bag 4 is buried in the concrete of the waterway and led to the land. Flow control valve 32, exhaust discharge section 33,
The air supply opening / closing valve 34, the air flow control valve 35, and the air compressor 36 are connected as shown in FIGS.

Then, air is injected into the air bag 4 from the air compressor 36 via the air supply flow control valve 35, the air supply opening / closing valve 34, and the air pipe 37, and as a result, the door 11 is raised. FIG. 2 is a cross-sectional view showing a state in which the bent portion 27 of the head of the door body 11 functions to guide the overflowing water downstream and not hit the air bag 4 or the belt 23. FIG. 1 shows this state viewed from the downstream side. The air bag 4 is on the back side of the door body 11 and supports the door body 11 over almost the entire width.

On the other hand, the air compressor 36 is stopped, the air supply on-off valve 34 is closed, the exhaust on-off valve 31 is opened, and the air bag 4 is opened.
FIG. 3 is a cross-sectional view showing a state in which the door 11 is completely laid down as a result of discharging the air having the pressure inside the air from the exhaust discharge section 33 into the atmosphere while controlling the air by the exhaust flow control valve 32.
It is. In this state, since earth and sand may flow down the bottom of the water channel violently, an angle iron 43 is provided for reinforcement at the head of the water channel bottom 42 immediately upstream of the bearing / holding plate 3.

FIGS. 6, 7, 8 and 9 show another embodiment of the undulating gate according to the present invention. FIG. 6 is a sectional view of the undulating gate, showing an upright state, and FIG. FIG. 8 is a cross-sectional view of the gate, showing a lying state.
FIG. 9 is an explanatory view of an assembly state of a rotating shaft and a door body, and FIG. 9 is an explanatory view of an air bag.

In FIGS. 6 and 7, an anchor fitting 61 installed at the bottom of a channel having a rectangular cross section is installed across the channel.
Bolts 63 that are screwed into a single row of vertical female screws 62
However, by pressing the edge 5 of the open side of the air bag 4 with the convex portion 64 on the bearing side of the bearing / holding plate 3 against the convex portion 65 on the downstream side of the anchor hardware 61, the open side of the air bag 4 is pressed. At the same time, the air bag 4 is fixed to the anchor hardware 61. At the end of the edge 5 of the open side of the air bag 4, there is a folded portion 7 of the reinforcing fiber protected by a resin rod 6 so that the bending radius of the reinforcing fiber is not too small. Corner 66 on the upstream side of the convex portion 64 on the bearing side and corner 67 on the upstream side of the convex portion 65 on the downstream side of the anchor hardware 61.
In such a case, the edge 5 of the open side of the air bag 4 functions so as not to be pulled out by the tension acting on the air bag 4.

When the bearing / pressing plate 3 is pressed by the bolt 63, the convex portion 68 at the upstream end thereof is supported by the convex portion 69 on the upstream side of the anchor hardware 61. Since the convex portion 64 on the bearing side of 3 presses the edge 5 of the open side of the air bag 4 more strongly, the sealing and fixing of the open side of the air bag 4 are ensured. Further, the bearing 10 protruding from the downstream edge of the bearing / holding plate 3 is combined with the rotating shaft 13 in the concave portion 12 at the lower end of the door body 11, and at the same time, the bearing 1 protruding from the lower end of the door body 11.
The door body 11 is freely rotatable with respect to the bearing / holding plate 3 because the door 4 is engaged with the rotating shaft 13 at the concave portion 15 on the downstream edge of the bearing / holding plate 3, so that the door body 11 can stand or fall freely.

On the other hand, one side of one rubber plate 16 is
7 and bolts 18, which are fixed to the upper surface of the bearing / holding plate 3, and the other sides are held by the holding plate 19 and the bolts 20.
To prevent water leakage between the bearing / holding plate 3 and the door body 11. In addition, the anchor bolt 21 and the holding plate 22 installed at an appropriate position on the downstream side of the air bag 4 at the bottom of the waterway have one end connected to the upper surface 26 of the concrete.
The other end of the band 23 made of rubberized cloth having sufficient strength is fixed to an appropriate position above the position where the air bag 4 contacts the downstream surface of the door body 11 with the bolt 24 and the holding plate 25. By doing so, when the door 11 rises to the predetermined posture, the door 11 is stopped by the tension acting on the band 23.

Next, the bent portion 27 of the head of the door body 11
When standing up, the water flowing over the door body 11 is guided to the downstream and then dropped, so that the water flowing over and the garbage and driftwood flowing down together do not hit the air bag 4 or the belt 23 directly. I do. Also, at the time of the fall, the bent portion 27 of the head of the door body 11 is formed.
Is supported by the support hardware 28 to secure a necessary space between the upper surface 26 of the concrete and the door 11, so that the air bag 4 and the band 23 are not crushed by the door 11.

Further, in order to enhance the bending rigidity of the door body 11 in the height direction, an elongated reinforcing steel plate 70 is attached to the upstream surface of the door body 11 by welding in a direction perpendicular to the flow of water at a right angle. At a necessary place in the reinforcing steel plate 70, the connection steel plate 72 is extended to a position above the bent portion 27, and is connected to the spoiler 71 protruding at the tip of the bent portion 27.
In the spoiler 71, the water flowing over the door body 11 is bent by the bent portion 27.
This is to prevent low-frequency noise that may be generated when falling from the vehicle. When the spoiler 71 and the reinforcing steel plate 70 are connected by the connecting steel plate 72, there is an effect of preventing a situation in which the refuse does not fall on the spoiler 71 and flow down at the time of standing up and falling down.

FIG. 8 shows the configuration of the door 11, the reinforcing steel plate 70 and the like described above, and also shows the combination of the door 11, the rotary shaft 13, and the presser plate 3 serving as a bearing. FIG. 9 is an explanatory view of the air bag 4 in this embodiment. In this embodiment, since the bolt 63 for pressing the bearing / holding plate 3 does not penetrate the air bag 4, there is no need to make a hole in the edge 5 of the open side, so that sealing is more reliable and advantageous.

With the above construction, the air pipe 37 connected to the base 30 below the air bag 4 is buried in the concrete of the waterway or the like, and is led to the land. Flow control valve 32, exhaust discharge section 33,
The air supply on-off valve 34, the air supply flow control valve 35, and the air compressor 36 are connected as shown in FIGS.

Then, air is injected into the air bag 4 from the air compressor 36 via the air supply flow control valve 35, the air supply opening / closing valve 34, and the air pipe 37. As a result, the door 11 is raised. FIG. 6 is a cross-sectional view showing a state in which the bent portion 27 of the head of the door body 11 functions to guide the overflowing water downstream and not hit the air bag 4 or the belt 23.

On the other hand, the air compressor 36 is stopped, the air supply on-off valve 34 is closed, the exhaust on-off valve 31 is opened, and the air bag 4 is opened.
FIG. 7 is a cross-sectional view showing a state in which the door 11 is completely laid down as a result of discharging air having an internal pressure of from the exhaust discharge section 33 to the atmosphere while controlling the air by the exhaust flow control valve 32.
It is. In this state, since earth and sand may flow down the bottom of the water channel violently, an angle iron 43 is provided for reinforcement at the head of the water channel bottom 42 immediately upstream of the bearing / holding plate 3.

[0033]

According to the undulating gate of the present invention, the bearing / holding plate 3 is mainly composed of a) sealing and fixing of the air bag, b) fixing of the door so that it can be raised and lowered, and c) fixing of the lower watertight rubber. Since it is used as a part that achieves three functions, it is possible to obtain an inexpensive gate with a very simple structure having a small number of parts. Further, the door body almost continuously supported in the width direction by the air bag is a steel sheet door body with a low workability, and this is also a factor that makes the gate extremely inexpensive.

In addition, as an effect of adopting the bearing / holding plate 3, there is an economic effect that the required head between the upstream and the downstream of the undulating gate is small, and the concrete structure is simple and small. Furthermore, in the undulating gate of the present invention, since the steel door always protects the air bag and the belt,
The same strength and durability as a steel undulating gate can be obtained against falling earth and sand, boulders, driftwood, drift ice, etc.

As described above, the undulating gate of the present invention is very economical, and has the same strength and durability as the conventional undulating gate made of steel.

[Brief description of the drawings]

FIG. 1 is a rear view showing an embodiment of an undulating gate according to the present invention, in a state where the undulating gate is erected.

FIG. 2 is a cross-sectional view of a state where an undulating gate is erected.

FIG. 3 is a cross-sectional view showing a state where an undulating gate is laid down.

FIG. 4 is a schematic diagram of an assembled state of a door body, a rotating shaft, and a bearing / holding plate of an up / down gate;

FIG. 5 is a schematic view of an air bag according to the present invention.

FIG. 6 is a sectional view showing another embodiment of the undulating gate according to the present invention, in a state where the undulating gate is erected.

FIG. 7 is a cross-sectional view showing a state in which the undulating gate is laid down.

FIG. 8 is an explanatory diagram of a door body, a rotating shaft, and a bearing / holding plate of an undulating gate.

FIG. 9 is a schematic view of an air bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top surface 2 Anchor bolt 3 Bearing / holding plate 4 Air bag 5 Edge of open side 6 Rod 7 Folding portion 8,9 Square 10 Bearing 11 Door body 12 Depression 13 Rotary shaft 14 Bearing 15 Depression 16 Rubber plate 17 Pressing plate 18 Bolt Reference Signs List 19 holding plate 20 bolt 21 anchor bolt 22 holding plate 23 band 24 bolt 25 holding plate 26 upper surface 27 bent portion 28 support base 29 hole 30 base 31 exhaust opening / closing valve 32 exhaust flow control valve 33 exhaust discharging portion 34 air supply On-off valve 35 Air supply flow control valve 36 Air compressor 37 Air tube 38 Hole 39 Female screw 40 Female screw 41 Hole 42 Water channel bottom 43 Angle iron 61 Anchor hardware 62 Female screw 63 Bolt 64,65 Convex portion 66,67 Square 68,69 convex Part 70 Reinforced steel plate 71 Spoiler 72 Connected steel plate

 ──────────────────────────────────────────────────続 き The continuation of the front page F term (reference) 2D019 AA31 CA05

Claims (4)

[Claims] 1. a) Crossing the bottom of a rectangular channel with a cross section of 1
The vertical anchor bolts and bearing / holding plate installed in the row are crushed into a flat rectangle when air is exhausted. The open side of the rubber bag with three closed sides and one open side is placed at the bottom of the channel. By holding down, while sealing the open side,
Secure the bladder at the bottom of the channel. b) The bearing protruding on the downstream side of the bearing / holding plate includes:
A bearing protruding from a lower end of a steel plate door having a dimension in the width direction slightly smaller than the weir width and a length necessary to secure a required erecting height at the time of erecting is rotatably mounted by a rotating shaft. c) On the other hand, one rubber plate is attached to the upper surface of the bearing / holding plate and the lower portion of the upstream surface of the steel plate door with bolts and holding plates, respectively, to secure the bearing / holding plate and the steel plate door. Prevent water leakage during d) Connect the other end of a rubber-made cloth band having sufficient strength, one end of which is fixed with an anchor bolt and a holding plate installed at an appropriate position downstream of the air bag at the bottom of the water channel, to the downstream side of the steel plate door. By fixing with a bolt and a holding plate at an appropriate position above the contact of the air bag on the surface, when the door body stands up to a predetermined posture, the door body stops due to the tension acting on this band. . With this configuration, an air pipe is connected from the air operating device on land to the air bag, and if compressed air is sent from the air operating device into this air bag, the air bag expands and the door body rises. An up-and-down gate, characterized in that, when air is discharged from the air bag, the air bag is crushed flat and the door body falls down. 2. The undulating gate of claim 1, wherein a single row of anchors mounted across the bottom of the channel instead of the vertical anchor bolts mounted in a row across the bottom of the channel. The bolt screwed into the vertical female screw and the bearing / holding plate are crushed into a flat rectangle when the air is exhausted. An up-and-down gate characterized by fixing an air bag to an anchor while closing an open side by attaching the gate. 3. The undulating gate according to claim 1, wherein an elongated steel plate is provided on an upstream surface of the door body in a posture perpendicular to the surface for the purpose of enhancing bending rigidity in a height direction of the door body.
An undulating gate, which is attached by welding in a direction parallel to the flow of water. 4. The up-and-down gate according to claim 1, wherein the up-and-down gate having a small gate width (about 2 to 3 m) is arranged side by side in a direction in which the rotation axis of the door body extends, thereby increasing the width. (10-200 m) An undulating gate characterized by being an undulating gate of a waterway.