JP2006207132A - Undulate gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an undulate gate capable of temporarily at least standing up the gate even if a flexible membrane is torn and changing a rubber bag body without shutting off a water passage. <P>SOLUTION: The undulate gate is constituted of a rigid sheathing board 2 having a length corresponding to the riverbed width and pivoted on the riverbed in a state to enable it to undulate and a plurality of flexible bag bodies 3 arranged along a pivoting section thereof on the downstream side of the rigid sheathing board 2, and the rigid sheathing board 2 is made to stand up by supplying a fluid to each flexible bag body 3, and the rigid sheathing board 2 is made to fall by discharging the fluid. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a relief gate that is installed on a river bed with a length corresponding to the river bed width and adjusts the flow of water from the upstream side to the downstream side by standing or lodging.

The undulation gate has a length corresponding to the width of the riverbed and is supported by a hydraulic cylinder from the downstream side that is pivotally supported so that it can stand up and fall on the riverbed. There are things that let you stand and surrender. However, such a undulating gate requires a large amount of money for installation and maintenance due to the structural complexity of the hydraulic cylinder, and is also cumbersome and skillful in terms of operation. There are many problems. Therefore, in recent years, without using a hydraulic cylinder or the like, a rubber bag body that is freely expandable and contractible is attached to the downstream side of the rigid barrier plate in a pillow shape, and the rigid barrier plate is attached according to the expansion and contraction of the rubber bag body. A relief gate configured to stand up and fall is used (see, for example, Patent Document 1 and Patent Document 2).
JP 58-26108 A JP 2001-20261 A

  However, the rubber bag attached to the downstream side of the rigid barrier plate may be damaged and contracted due to collision with driftwood or other drifting material flowing over the rigid barrier plate from the upstream side or the life of the rubber bag itself. Therefore, there is a possibility that the undulating gate may reach an unintended lodging state. In this case, it is also assumed that a large amount of water on the upstream side that has been blocked by the undulating gate due to a loss of the function as the weir suddenly flows out and harms the downstream side.

  In addition, if the rubber bag is damaged, the water channel must be temporarily shut off to stop the flow, and the damaged rubber bag must be replaced and replaced, resulting in complicated work processes and high costs. was there.

  The present invention has been made in view of such problems, and an object of the present invention is to allow at least an emergency gate to stand even when a rubber bag is damaged, and to block a water channel. It is an object of the present invention to provide a undulation gate that allows replacement and replacement of a rubber bag without any problems.

  In order to achieve the above object, the undulation gate of the present invention has a length corresponding to the river bed width, and is pivotally supported so as to be able to stand and fall on the river bed, and on the downstream side of the rigid dam plate, A plurality of flexible bags that are arranged along the pivotal support portion thereof and that control the standing up and the overturning operation of the rigid weir plate based on supply and discharge of the internal pressure are provided.

  In the present invention, the flexible bag is preferably formed by folding the hollow belt-like body in half at the center in the longitudinal direction. In addition, the flexible bag body is formed by folding the hollow belt-like body in half at the central portion in the longitudinal direction and joining both end portions in the longitudinal direction, with the joining end portion positioned upstream. Or the flexible bag is formed by folding the hollow belt-like body in half at the center in the longitudinal direction and having both ends in the longitudinal direction as free ends, and the bent part is positioned upstream. It is preferable that they are arranged. Furthermore, it is preferable that the flexible bag is fixed to a river bed or a dam plate.

  In the undulating gate of the present invention, a plurality of flexible bags are arranged and fixed along the pivotal support portion of the rigid dam plate on the downstream side of the rigid dam plate. Even if one of them breaks a flexible bag due to the impact of a boulder, driftwood or other drifting objects, or the life of the bag itself, the remaining flexible bag maintains the standing state of the rigid weir plate I can. Therefore, a large amount of water on the upstream side of the undulation gate does not flow out and cause damage on the downstream side due to unintentional lodging of the undulation gate.

  In addition, the undulation gate of the present invention can be applied to the other remaining flexible bags even if one of the plurality of flexible bags breaks the flexible bag due to the collision of drifting objects or the life of the bag itself. Since the standing state of the rigid weir plate can be maintained by the bag body, the torn flexible bag body can be replaced with a new flexibility while the rigid weir plate is kept standing without temporarily shutting off the water channel and stopping the flow. It can be exchanged for a bag. In order to realize these, supply / exhaust piping is required for each flexible bag. In order to reduce the number of these, it is possible to connect every other in two systems. In this way, the function can be maintained as long as two adjacent ones are not damaged.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view when the undulating gate according to the first embodiment of the present invention is raised, FIG. 2 is a perspective view when the undulating gate is overlaid, and FIG. 3 is when the undulating gate is raised. FIG.

  As shown in FIGS. 1 and 2, the undulation gate has a length corresponding to the river bed width and is pivotally supported so as to be able to stand and fall on the river bed, and the downstream side of the rigid dam plate 2. Thus, the flexible bag body 3 is constituted by a plurality of flexible bag bodies 3 arranged in a line along the pivotal support portion thereof, and is rigid by supplying fluid such as air or water to the flexible bag body 3. The dam plate 2 is erected to close the water channel, and the fluid is discharged to incline the rigid dam plate 2 and open the water channel. Here, the flexible bag bodies 3 are arranged in a line along the pivot part, but the flexible bag bodies 3 are arranged in a staggered pattern or a plurality of lines along the pivot part. May be. In addition, the flexible bag 3 has a structural strength that can maintain the standing state of the rigid barrier plate 2 with the remaining flexible bag even if one flexible bag is broken. .

  The rigid dam plate 2 is assembled with, for example, a steel plate, a frame structure, a box-type structure, and the like. As shown in FIG. Has been. In addition, the rigid barrier plate 2 is bent at an intermediate portion in a direction perpendicular to the longitudinal direction of the rigid barrier plate 2 and further bent near the tip portion. Although it has a shape that completely covers the flexible bag body 3, it may be a flat plate shape without being bent. FIG. 4 is a cross-sectional view at the time of lying down showing a state when the rigid barrier plate 2 covers the flexible bag body 3.

  An attachment member 5 is provided at an end of the rigid barrier plate 2 in the longitudinal direction, and one side of a substantially triangular rubber film body 7 is bonded and fixed to the attachment member 5. The other side of the rubber film body 7 is fixed to an anchor bolt disposed on the slope portion 8 with a nut. As shown in FIG. 2, the rubber film body 7 is disposed in contact with the slope portion 8 as shown in FIG. If the slope is vertical, the attachment member 5 can be slid directly on the slope without using the rubber film body 7.

  As illustrated in the perspective view of FIG. 5, the flexible bag 3 is a hollow belt-like body, and two long flexible films are overlapped with a release sheet between them to release the release sheet. The part not sandwiching the film is vulcanized and bonded, and then the release sheet is extracted, and the longitudinal ends 17 of the flexible film that has been extracted and opened are closed. FIG. 6 shows that the center part in the longitudinal direction of the hollow belt-like body is folded in half, the closed ends 17 are vulcanized and joined together, and a fluid is supplied to the inner space formed at the position of the release sheet to be expanded. It is a side view of the flexible bag body which shows the state.

  The flexible bag 3 is made of nylon fiber reinforced rubber with a total thickness of about 10 to 40 mm, and becomes a bag with a thickness of about 5 to 20 mm in a state in which a fluid is sealed.

  As shown in FIG. 3, a bolt hole for attaching the flexible bag 3 is provided near the pivotal support 6 of the rigid barrier plate 2, and the flexible bag 3 is a hollow belt-like body. The joint end 18, which is vulcanized and joined between both ends, is disposed on the downstream side of the rigid barrier plate 2 with the joint end portion 18 being upstream, and the bolt hole of the rigid barrier plate 2 and the joint end of the flexible bag body 3. The bolt 14 is passed through the bolt hole formed in the portion 18 and the nut 15 is screwed into the rigid barrier plate 2. A pedestal 10 is arranged between the flexible bag 3 and the riverbed concrete 4 so that, when the undulation gate falls down, a boulder or the like does not enter under the flexible bag 3.

  Further, near the pivotal support 6 on the downstream side of the rigid barrier plate 2, an air supply / exhaust means (not shown) for supplying a fluid such as air or water into the flexible bag body 3 is disposed. The flexible bag body 3 expands by the supply of fluid from the air supply / exhaust means to stand up the rigid barrier plate, and contracts by discharging the fluid to collapse the rigid barrier plate.

  As shown in FIG. 7, the flexible bag 3 penetrates the bolt hole formed in the joint end 18 to the anchor bolt 11 disposed in the riverbed concrete 4 near the pivot 6 of the rigid barrier plate 2. Then, the nut 12 may be screwed and fixed to the riverbed concrete 4.

  In the above-described embodiment, both end portions 17 in the longitudinal direction of the hollow belt-like body are vulcanized and joined together in advance. However, when the flexible bag 3 is fixed to the rigid barrier plate 2 or the riverbed concrete 4, The end portions 17 may be overlapped, the bolts formed in both end portions may be passed through the bolts, and the nuts may be screwed together to join the end portions 17 to each other.

  Next, the undulating gate according to the second embodiment of the present invention will be described. FIG. 8 is a perspective view when the undulating gate according to the second embodiment of the present invention stands up. Since the rigid weir plate according to the second embodiment is the same as the rigid weir plate according to the first embodiment, description thereof is omitted.

  The flexible bag 13 is a hollow belt-like body as illustrated in a perspective view of FIG. 5, and two long flexible films are overlapped with a release sheet interposed therebetween, and a release sheet is formed. The part not sandwiched is vulcanized and bonded, and then the release sheet is pulled out, and both ends in the longitudinal direction of the flexible film that has been pulled out and opened are closed. In FIG. 9, the center part in the longitudinal direction of the hollow belt-like body is folded in half, both ends 17 in the longitudinal direction are free ends, and fluid is supplied to the inner space formed at the position of the release sheet to be expanded. It is a side view of the flexible bag which shows a state.

  The individual flexible bags 13 are folded in half and arranged in a line on the downstream side of the rigid barrier plate 2 so that the bent portion is on the upstream side, and the bent portions are as shown in FIG. Further, it is pressed by a belt-like or bar-like attachment means 21 prepared for each flexible bag 13 and fixed to the rigid barrier plate 2. Here, the flexible bag bodies 3 are arranged in a line along the pivot part, but the flexible bag bodies 3 are arranged in a staggered pattern or a plurality of lines along the pivot part. May be.

  FIG. 11 is a cross-sectional view showing a state in which the flexible bag 13 is fixed to the rigid barrier plate 2 by the attaching means 21. A bolt hole for attaching the attachment means 21 is provided near the pivot 6 of the rigid barrier plate 2, and the attachment means 21 has attachment holes formed at both ends thereof. The attachment means 21 is fixed to the rigid barrier plate 2 by passing the bolts 14 through the two bolt holes and the attachment holes of the attachment means 21 and screwing the nuts. The flexible bag 13 folded in half is fixed to the rigid dam plate 2 with the bent portion being pressed by the attachment means 21 when the attachment means 21 is fixed to the rigid dam plate 2. A pedestal 10 is disposed between the flexible bag 13 and the riverbed concrete 4 so that, for example, a rolling stone does not enter under the flexible bag 3 when the undulation gate falls down.

  As shown in FIG. 12, the flexible bag 13 is provided with anchor bolts 11 for attaching the attachment means 21 to the riverbed concrete 4, and the bent portion of the flexible bag 13 is provided. The anchor bolt 11 may be pressed through the attachment means 21, and the anchor bolt 11 may be passed through the attachment hole formed in the attachment means 21, and the nut 12 may be screwed to be fixed to the riverbed concrete 4.

  In the above-described embodiment, an attachment means is prepared for each flexible bag 13, and the flexible bags 13 are individually fixed to the rigid barrier plate 2 or the riverbed concrete by the attachment means. The bent portion of the flexible bag 13 is pressed by one attachment means over the entire flexible bag 13, and all the flexible bags 13 are collectively fixed to the rigid barrier plate 2 or the riverbed concrete. Anyway. Furthermore, a pipe may be used as the attachment means and used for supply and exhaust.

  In the undulation gate according to the first and second embodiments described above, a plurality of flexible bag bodies are arranged and fixed along the pivotal support portion of the rigid dam plate on the downstream side of the rigid dam plate, In addition, even if one flexible bag breaks, the remaining flexible bag can maintain the standing state of the rigid barrier plate, so that one of the plurality of flexible bags can be a boulder or driftwood. Even if the flexible bag breaks due to the collision of other drifting objects or the life of the bag itself, the remaining state of the rigid weir plate can be maintained by the other remaining flexible bags. Therefore, a large amount of water on the upstream side of the undulation gate does not flow out and cause harm to the downstream side due to unintentional lodging of the undulation gate.

  In addition, even if one of the plurality of flexible bags breaks the flexible bag due to the collision of a drifting object or the life of the bag itself, the remaining flexible bags can Since the standing state can be maintained, the torn flexible bag body is replaced with a new flexible one as shown in FIG. 13 while the rigid weir plate is kept standing without temporarily shutting off the water channel and stopping the flow. It can be exchanged for a bag.

It is a perspective view at the time of standing up of the raising / lowering gate which concerns on the 1st Embodiment of this invention. It is a perspective view at the time of the fall of a undulation gate. It is sectional drawing at the time of standing of the undulation gate. It is sectional drawing at the time of the fall of the undulation gate. It is a perspective view of a hollow strip. It is a side view of the flexible bag body which concerns on 1st Embodiment. It is sectional drawing which shows the other example which fixes a flexible bag body. It is a perspective view at the time of standing-up of the undulation gate which concerns on the 2nd Embodiment of this invention. It is a side view of the flexible bag body which concerns on 2nd Embodiment. It is a perspective view of the flexible bag body hold | suppressed by the attachment means. It is sectional drawing which shows the state by which the flexible bag body is being fixed to the rigid dam with the attachment means. It is sectional drawing which shows the other example which fixes a flexible bag body. It is a figure explaining that the torn flexible bag body can be exchanged for a new flexible bag body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Rigid dam plate 3,13 Flexible bag body 4 Riverbed concrete 5 Mounting member 6 Pivoting part 7 Rubber film body 8 Slope part 10 Base 11 Anchor bolt 12, 15 Nut 14 Bolt 17 Both ends 18 Joining end 21 Attachment means

Claims (5)

  A rigid weir plate having a length corresponding to the width of the river bed and pivoted so as to be able to stand up and down with respect to the river bed, and disposed downstream of the rigid weir plate along the pivot of the rigid weir plate A raising / lowering gate comprising a plurality of flexible bags for controlling standing up and lying down of a rigid barrier plate based on supply / discharge.   The undulating gate according to claim 1, wherein the flexible bag is formed by folding a hollow belt-like body in half at the center in the longitudinal direction.   The flexible bag is formed by folding the hollow belt-like body in half at the center in the longitudinal direction, joining both ends in the longitudinal direction, and placing the joining end on the upstream side. The undulating gate according to claim 1.   The flexible bag body is formed by folding the hollow belt-like body in half at the center in the longitudinal direction and having both ends in the longitudinal direction as free ends, with the folded portion positioned on the upstream side. The undulating gate according to claim 1.   The undulation gate according to any one of claims 1 to 4, wherein the flexible bag is fixed to a river bed or a dam plate.

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