JPH11303049A - Rubber weir - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give a complete descent while decreasing the occurrence of V-notch during descent of a rubber weir and reduce the depth of V-notch by providing a double construction of both the outer layer rubber and inner tube for the rubber weir thereby preventing any damages to the interior tube that may be caused by the impact of boulder or the like to the tube during full descent. SOLUTION: A rubber weir 1 which is expanded, shrunken, risen and fallen by air supply and exhaust for a fluid is produced by a double construction of a non-airtight outer layer rubber 3 and an airtight inner tube 4 which is expanded and shrunken by air supply and exhaust for the fluid wrapped by the outer layer rubber 3. And the outer layer rubber 3 comprises an upstream side rubber 31 and a downstream side rubber 32 which are coupled together near the crown of the weir and fixed to the bottom of water channel at the upstream side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber dam which is installed in a water channel to open and close the water channel, and expands and contracts due to the inflow and discharge of a fluid. With the structure, the inner tube is prevented from being damaged by the impact caused by the boulders, etc. at the time of full fall. It relates to a rubber weir to be designed.

[0002]

2. Description of the Related Art Conventionally, a channel is installed in a channel to open and close a channel for water intake and the like. The channel is expanded and raised by the inflow of a fluid such as air to close the channel. Open, rubber weirs are known.

[0003]

However, in the case of a rubber weir, the surface of the membrane is liable to be worn and damaged by the boulders when it is laid down, its durability is apt to be reduced, and it is necessary to replace the damaged rubber weir. However, there was a problem that the waterway had to be temporarily cut off to stop the flow, which was very troublesome and costly.

In the rubber weir, a part of the top of the rubber weir is locally deformed into a V-shape in the process of falling of the rubber weir, that is, while discharging the internal fluid. Notch phenomenon occurs, overflowing water is concentrated and discharged from the V-notch generation point to the downstream side, and the bottom of the downstream water channel at the V-notch generation point is locally scoured and the channel shape is changed. was there.

Further, in the rubber weir, the air inside the rubber weir is not completely exhausted when it falls down, but remains and the rubber weir partially lifts up due to the residual air, and the rubber weir receives the impact from the boulder. There is also a problem that the ship is easily damaged by a screw or the like of the navigating ship.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in order to solve the problems. The object of the present invention is to provide a rubber weir having a double structure of an outer layer rubber and an inner tube. In addition, the inner tube is prevented from being damaged from the impacts caused by the boulders, etc. at the time of full fall, the degree of V notch generated during the fall of the rubber weir and the depth of the V notch are reduced, and complete fall is achieved. It is to provide a rubber weir that can be designed.

[0007]

In order to achieve the above object, the present invention is provided in a waterway to open and close the waterway,
In a rubber weir that expands and contracts due to supply and exhaust of fluid,
The rubber weir has a double structure of a non-airtight outer layer rubber and an airtight inner tube wrapped in the outer layer rubber and expanded and contracted by supply and exhaust of fluid, and the outer layer rubber is connected near the top of the weir and Composed of upstream rubber and downstream rubber fixed at the bottom of the waterway on the upstream side, the upstream rubber protects the inner tube from boulders and the like at the time of full fall and protects the shape of the inner tube and protects it from falling down when standing up Highly abrasion-resistant rubber made of a highly wear-resistant rubber material that absorbs shocks that indirectly act on the inner tube via the upstream rubber from boulders or the like at the time of full fall-down. The inner tube is made of a thin, highly flexible rubber material.

In a preferred embodiment, the upstream rubber and the downstream rubber are connected in the vicinity of the top of the weir with a U-shaped connecting member having an appropriate length. A spoiler for draining water may be provided. Also,
On the inner surface of the rubber on the upstream side of the outer layer rubber at the time of full fall, a storage space for storing the inner tube and a gradient where the space becomes larger toward the upstream side are formed, and the storage space is prevented from partially sinking. The protrusion may be formed on the inner surface of the upstream rubber.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments of the invention shown in the drawings. Here, FIG. 1 is a front view of the rubber weir, FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG. 1, FIG. 3 (A) is a plan view of the coupler, and FIG.
4 is a side view of the connecting tool, FIG. 4 is a cross-sectional view of the rubber dam in a completely laid state, FIG. 5 (A) is a partial plan view of the upstream rubber of the outer rubber,
FIG. 5B is a side sectional view of the upstream rubber of the outer rubber.

In FIG. 1, a rubber weir 1 is installed in the width direction of the water channel 2 so as to open and close the water channel 2 for water intake or the like.
The fluid 2 is expanded and undulated by the supply of a fluid such as air to close the channel 2, and the fluid 2 is reduced and laid down by the discharge of the air and the channel 2
It has a double structure of a non-hermetic outer layer rubber 3 and an air-tight inner tube 4 wrapped in the outer layer rubber 3 and expanded and contracted by supply and discharge of a fluid.

The outer rubber layer 3 prevents the inner tube 4 of the rubber weir 1 from being damaged by the boulders a and the like during the entire fall, reduces the degree of occurrence of V notches generated in the rubber weir 1 and reduces the depth of the V notch. This is provided to reduce the size and the like, and is provided so as to surround the inner tube 4.

The outer rubber 3 is composed of an upstream rubber 31 and a downstream rubber 32 which are connected near the top of the weir and fixed on the bottom surface 2a of the upstream water channel 2. Since the outer rubber layer 3 composed of the upstream rubber 31 and the downstream rubber 32 is non-hermetic, when the outer rubber 3 is fixed to the bottom surface 2a of the water channel 2, its attachment becomes easy.

The upstream rubber 31 is a side facing the upstream side of the water channel 2 when the rubber weir 1 stands and closes the water channel 2.
At the time of full fall, the upper side of the inner tube 4 is covered with a boulder a
The inner tube 4 is made of a highly wear-resistant rubber material that protects the inner tube 4 from the like and protects the shape of the inner tube 4 when standing up and protects the inner tube 4 from falling down.

A storage space 31a for storing the inner tube 4 is provided on the inner surface of the upstream rubber 31 in the full fall state, that is, on the upper surface side of the inner tube 4. Storage space 31
a is a slope surface 31b in which the ceiling surface serving as the inner surface of the upstream rubber 31 increases in space toward the upstream side of the water channel 2 at the time of full fall.
Is formed.

When the slope 31b is laid down, the upstream rubber 3
1 is provided so that when the inner tube 4 is pressed, the air inside the inner tube 4 is easily pushed out toward the air supply / exhaust port 41 provided near the upstream side.

The height inside the storage space 31a, which is the inner surface of the upstream rubber 31 at the time of full fall, is an amount obtained by adding a margin to the thickness of the completely flat inner tube 4 from which air is discharged. Discharged and perfectly flat inner tube 4
Is completely stored inside the storage space 31a when the bed is completely collapsed.

A plurality of convex portions 31c are formed vertically and horizontally at appropriate intervals on the inclined surface 31b of the storage space 31a which becomes the inner surface of the upstream rubber 31 at the time of full fall. Each convex part 31
c is an inner tube 4 whose lower end is in a flat state when fully laid down.
And is supported by the flat inner tube 4 in contact with the upper surface of the storage space 31 to prevent the storage space 31a from partially sinking.

The downstream rubber 32 faces the downstream side of the water channel 2 when the rubber weir 1 stands and closes the water channel 2.
In addition, when fully lying down, it is located on the lower surface side of the inner tube 4 to prevent the inner tube 4 from directly abutting on the bottom surface 2a of the water channel 2 and protect the upstream rubber 31 from the boulders a etc. It is made of a rubber material having a high cushioning and absorbing property that absorbs and absorbs an impact or the like indirectly acting on the inner tube 4 through the inner tube 4.

At the time of full fall, the upstream rubber 31 and the downstream rubber 32 fall down toward the downstream side of the water channel 2 to be flattened, and the storage space 31a of the upper and lower upstream rubbers 31 and the downstream rubber 32 During this time, the inner tube 4 that has been exhausted and is in a flat state is stored and protected. Also, at the time of full fall, the upstream rubber 31 and the downstream rubber 32 have the same length in the flowing water direction of the water passage 2 and are connected at both ends in the flowing water direction of the water passage 2.

Of these, a portion which is on the downstream end side when fully lying down and near the top of the upstream rubber 31 and the downstream rubber 32 when standing up is a connecting member 3 having an appropriate length and a U-shaped cross section.
3 That is, the upstream rubber 31 and the downstream rubber 32 are directed to the downstream side, the upstream rubber 31 is placed on the upper side, and the downstream rubber 32 is placed on the lower side. ing. The connecting member 33 is attached in the width direction of the water channel 2.

The connecting member 33 having a U-shaped cross section is provided with a spoiler 34 for draining overflow water. The spoiler 34 has a sharp pointed shape toward the downstream side. The spoiler 34 is used for the upstream rubber 3
Connector 3 having a U-shaped cross section for connecting 1 and downstream rubber 32
It serves to change the direction of the water flowing over 3.

The direction of overflow of the overflow water is changed by the spoiler 34, and the overflow of the overflow water is drained in the width direction of the water channel 2, and the air flows in from the drain point to below the overflow point, and the overflow point is removed. It is prevented that the lower pressure becomes the atmospheric pressure to become a negative pressure, and the vibration of the rubber weir 1 generated due to the negative pressure is prevented.

Further, the portion which is on the upstream end side when fully lying down and near the lower ends of the upstream rubber 31 and the downstream rubber 32 when standing up is fixed to the bottom surface 2a of the water channel 2 by an anchor 2b or the like. That is, the upstream rubber 31 and the downstream rubber 32 are directed to the downstream side, the upstream rubber 31 is placed on the upper side, and the downstream rubber 32 is placed on the lower side, and fixed to the bottom surface 2a of the water channel 2 by the anchor 2b or the like. Have been.

The inner tube 4 is formed of a rubber bag which expands and contracts by supply and exhaust of a fluid such as air. The inner tube 4 is held by the outer rubber layer 3 on the outside so as to lie down on the downstream side of the water channel 2 when it lays down,
The inner tube 4 to which the fluid is supplied and expands is held by the outer rubber 3 so as to rise and raise the outer rubber 3 toward the upstream side of the water channel 2.

The inner tube 4 is provided with a supply / exhaust port 41 near the upstream side of the water channel 2, and through this supply / exhaust port 41, for example, air as a fluid is supplied to the inside of the inner tube 4. The air as the fluid is discharged. The supply / exhaust port 41 has a structure in which, for example, air as a fluid is supplied and discharged by a pump (not shown) that supplies and discharges the fluid.

Next, the operation based on the configuration of the embodiment of the present invention will be described below. When the water channel 2 is opened by lowering the rubber weir 1 that has been standing up and closing the water channel 2, the fluid inside the inner tube 4 of the rubber weir 1, for example, air, is used by using a pump and a supply / exhaust port 41 (not shown). And release it into the atmosphere.

When the air inside the inner tube 4 of the rubber weir 1 begins to be discharged, the inner tube 4 is inflated because it is sandwiched between the upstream rubber 31 and the downstream rubber 32 of the outer rubber 3. The inner tube 4 of the rubber weir 1 is pinched by the upstream rubber 31 and the downstream rubber 32 of the outer rubber layer 3, and gradually contracts in a flat shape,
The rubber weir 1 starts falling down toward the downstream side of the water channel 2.

In this case, the inner tube 4 that contracts while falling down toward the downstream side is pressed from the downstream side of the water channel 2 to the upstream side by the slope 31 b of the upstream side rubber 31 of the outer layer rubber 3, The air inside moves toward the upstream side. An air supply / exhaust port 41 is provided near the upstream side of the inner tube 4, and the internal air smoothly moves toward the air supply / exhaust port 41, and flows from the air supply / exhaust port 41 to the outside of the inner tube 4. It is discharged and contracts smoothly into the inner tube 4, so that the remaining air inside the inner tube 4 is avoided.

When the air inside the inner tube 4 is exhausted from the air supply / exhaust port 41, the inner tube 4 becomes flat. In this case, the flattened inner tube 4 enters the storage space 31a of the upper upstream rubber 31 and the lower surface of the inner tube 4 comes into contact with the upper surface of the downstream rubber 32. Is completely protected by the upper and lower upstream rubbers 31 and the downstream rubbers 32, and is prevented from being damaged by the boulders a and the like.

Further, when the rubber weir 1 falls down, a connecting member 33 having a U-shaped cross section is attached to a portion which becomes an overflow point of the rubber weir 1 in the width direction of the water channel 2. It hardly occurs, and even if a V notch occurs, a deep V notch hardly occurs.

A spoiler 34 is attached to a connecting member 33 having a U-shaped cross section attached to a portion of the rubber weir 1 which will be an overflow point.
Is formed, so that the spoiler 34 drains the water, and prevents the air from flowing into the area below the overflow point from the drainage point, thereby preventing the pressure below the overflow point from becoming atmospheric pressure and becoming a negative pressure. As a result, the vibration of the rubber weir 1 generated due to the negative pressure is prevented.

It should be noted that the present invention is not limited to the above embodiment of the present invention, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

[0033]

As is apparent from the above description, according to the rubber weir according to the present invention, the rubber weir has a double structure of the outer layer rubber and the inner tube, and the outer layer rubber is formed on the upstream side having high wear resistance. By comprising rubber and the buffer-absorbing downstream rubber, the upstream rubber can protect the inner tube from rolling stones etc. at the time of full fall, and also maintain the shape of the inner tube when standing up and protect it from falling objects The inner rubber can be protected by the downstream rubber by absorbing and absorbing shocks and the like indirectly acting on the inner tube from the boulders and the like via the upstream rubber at the time of full fall. In addition, since the upstream rubber and the downstream rubber of the outer rubber are fixed at the bottom of the water channel, the fixing portion of the rubber weir to the water channel bottom does not need to combine the fixing function and the confidential function unlike the conventional product. Can be simplified in the fixing structure to the water channel bottom. Moreover, since the upstream rubber and the downstream rubber of the outer rubber are connected near the top of the weir, it is possible to reduce the degree of occurrence of the V notch and the depth of the V notch. Furthermore, since the inner tube is made of a thin, highly flexible rubber material, the air supply / exhaust port uses the restoring force of the outer layer rubber to make the residual air which tends to be generated at the tip near the entire sloping state become flat. It can be guided to the part and complete laying down, and it is thin and easy to repair. Furthermore, since the outer layer rubber can be divided into the upstream side rubber and the downstream side rubber by removing the connecting member, inspection and repair of the inner tube or replacement thereof can be easily performed.

Further, the connection between the upstream rubber and the downstream rubber in the vicinity of the weir is made by a rigid connector having a U-shaped cross section of an appropriate length. When a spoiler for draining overflow water is provided, the bending rigidity in the width direction of the water channel is further improved by the rigid connector,
The notch generation degree and the V-notch depth can be further reduced. Moreover, with the spoiler,
It is possible to prevent the atmosphere from flowing sufficiently below the overflow section and to prevent the lower side of the overflow section from becoming a negative pressure. The generated vibration of the rubber weir can be prevented.

Further, a gradient is formed on the inner surface of the rubber on the upstream side of the outer layer rubber at the time of full fall as a storage space for storing the internal tube and a space increasing toward the upstream side. If a convex portion that prevents the storage space from partially sinking is formed on the inner surface of the upstream rubber, it becomes easier to guide residual air in the inner tube to the supply / exhaust port on the fixed portion side, Residual air can be prevented from remaining in the inner tube, trouble caused by remaining air, for example, a rubber weir partially lifts up and receives the impact from boulders or the screw of a navigating ship It is possible to prevent the occurrence of troubles such as damage due to the above. In addition, it is possible to prevent the storage space from partially sinking due to the convex portion formed on the inner surface of the upstream rubber.

[Brief description of the drawings]

FIG. 1 is a front view of a rubber weir showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken on line AA of FIG. 1;

FIG. 3A is a plan view of a coupler showing an embodiment of the present invention. (B) is a side view of the coupler showing the embodiment of the present invention.

FIG. 4 is a cross-sectional view of the rubber weir in a completely laid state showing the embodiment of the present invention.

FIG. 5 (A) is a partial plan view of the upstream rubber of the outer rubber showing the embodiment of the present invention. (B) is a side sectional view of the upstream rubber of the outer layer rubber showing the embodiment of the present invention.

[Description of Signs] 1 Rubber weir 2 Water channel 2a Bottom surface 2b Anchor 3 Outer rubber 31 Upstream rubber 31a Storage space 31b Slope 31c Convex portion 32 Downstream rubber 33 Connecting tool 34 Spoiler 4 Inner tube 41 Supply / exhaust port section a Roller

Claims (3)

[Claims] 1. A rubber dam which is installed in a water channel to open and close a water channel and expands and contracts by supply and exhaust of a fluid, wherein the rubber weir is wrapped in a non-airtight outer layer rubber and the outer layer rubber to supply a fluid. A double structure of an airtight inner tube that expands and contracts due to exhaust gas, and the outer layer rubber is configured by an upstream rubber and a downstream rubber connected near the top of the weir and fixed at an upstream water channel bottom, The upstream rubber is made of a highly wear-resistant rubber material that protects the inner tube from boulders and the like at the time of full fall, and maintains the shape of the inner tube at the time of standing and protects it from falling down. It is composed of a rubber material with high shock absorbing property that absorbs shocks that indirectly act on the inner tube from the boulders etc. via the rubber on the upstream side,
A rubber dam, wherein the inner tube is made of a thin and highly flexible rubber material. 2. The connection between the upstream rubber and the downstream rubber near the top of the weir is made by a connecting member having a U-shaped cross section of an appropriate length, and a spoiler for draining overflow water is provided on the connecting member having a U-shaped cross section. The rubber weir according to claim 1, wherein the rubber weir is provided. 3. A storage space for storing the inner tube and a gradient in which the space increases toward the upstream side are formed on the inner surface of the rubber on the upstream side of the outer layer rubber at the time of full fall, and the storage space is partially formed. The rubber weir according to claim 1, wherein a convex portion for preventing sinking is formed on an inner surface of the upstream rubber.