JP4405937B2 - Undulating weir - Google Patents

Description

  The present invention relates to a undulation weir that undulates according to the water level in a culvert as a water channel.

Conventionally, a slide gate is known as a weir for a water channel. This is known to have a structure in which a gate plate is fitted in a groove provided in a support column provided on both side walls of a water channel and is moved up and down by rotating a rotary handle according to the volume of water (see, for example, Patent Document 1). ).
JP-A-4-55510

  However, in recent years, many culverts have been made with the top opening of the water channel covered with concrete or the like, and installing a slide gate in such a culvert is because of the structure where the top of the water channel is blocked, It was difficult. If the gate plate is moved up and down by an electric motor or the like, it is necessary to secure a power supply, or there is a high possibility that the power supply will be interrupted during a flood or the like, making emergency response difficult. Also, it is very dangerous to go up and down in the culvert. Furthermore, a space for raising the gate plate is required, and it is difficult to use depending on the height of the culvert.

  The present invention has been made to solve such problems, and it is not necessary to perform operations or the like by entering into a culvert. It can be used regardless of the height of the culvert, and can be easily handled in an emergency. The purpose is to provide a undulating weir.

The undulation weir of the invention according to claim 1 is a undulation dam that undulates according to the water level in the culvert, and is attached to the bottom surface of the culvert, bulges by air supply and dams the water flow of the culvert, and by air discharge A bag-like member that is deflated and releases the blocking of the water flow in the underdrain; an air supply means for supplying air to the bag-like member; and an air in the bag-like member to maintain the bag-like member in an inflated state. Stop means for stopping discharge, and air discharge means for automatically releasing the air discharge stop by the stop means and discharging air from the bag-like member when the water level reaches a predetermined height , The air supply means has an air supply pipe in which one end is connected to the bag-like member and the other end is disposed in a manhole provided in the vicinity of the underdrain, and a joint member is attached to the other end. So The joint member, characterized in that the joint member of the counterpart provided at the end of the feed pipe that led to transportable air supply blower is in the configuration to be connected.

The undulation weir of the invention according to claim 2 is characterized in that in the undulation weir of claim 1 , the bottom surface to which the bag-like member is attached is depressed.

The undulation weir of the invention according to claim 3 is the undulation weir of claim 1 or 2 , wherein the air discharge means has an air discharge pipe discharged from the bag-like member, and the stop means has the air A first on-off valve provided in the supply pipe, a second on-off valve provided on the air discharge pipe and opened / closed by a shaft rotated by an operation lever, and a lock mechanism for locking the second on-off valve in a closed state The air opening / closing of the bag-like member is stopped by closing the first on-off valve and the second on-off valve.

The undulation weir of the invention according to claim 4 is the undulation dam according to claim 3 , wherein the locking mechanism includes a locking piece attached to the shaft and a locking piece locked to the locking piece. A float member that stops rocking, and the air discharge means has a float that changes its height position according to a water level, displaces the lock member, and unlocks the locking piece; And a weight for rotating the shaft in a direction to open the second on-off valve.

The hoisting weir of the invention according to claim 5 is the hoisting weir of claim 3 or 4 , characterized in that the operating lever is provided at a position where it can be operated from the ground.

Relief weir of the invention according to claim 6 is the relief weir according to any one of claims 1 to 5, wherein the underdrain mainly waterways and having a branched branch water passage from the main water channel, the branch water passage The bag-shaped member is provided on the surface.

  In the case of the undulating weir of the present invention, when air is supplied to the bag-like member attached to the bottom surface of the underdrain by the air supply means, the bag-like member expands, and the bag-like member is inflated by the stopping means to maintain the inflated state of the bag-like member. The air discharge of the member is stopped. Thereby, the state which the bag-shaped member swelled is maintained, and the water flow of a culvert is blocked. When the water level in the culvert reaches a predetermined height, the air discharge means automatically cancels the air discharge stop by the stop means and discharges air from the bag-like member, which causes the bag-like member to wither and culvert. Release the water flow barrier at Therefore, since it is a mechanism that does not require a power source or human power, even if it is installed in a culvert, there is no need to enter the culvert and perform operations, etc., and it is easy to deal with in an emergency such as a flood. Furthermore, when the bag-shaped member is deflated and the damming of the water flow in the culvert is released, the bag-shaped member is pressed and further deflated by the water flow, and is stored in the bottom side of the culvert. It can be used regardless of the height of the culvert and can be installed in any culvert.

The air supply pipe for supplying air to the bag-like member opens the manhole cover, and is connected to the joint member in the manhole on the other end provided at the end of the supply pipe connected to the air supply blower that can be transported It is possible to supply air to the bag-shaped member by connecting the joint members. Therefore, the bag-like member can be inflated using a transportable air supply blower at regular inspections or after wiping the bag-like member and releasing the water flow blocking in the underdrain. It is not necessary to always install an air supply blower in the vicinity of the undulation weir.

In the case of the undulating weir of the invention according to claim 2 , since the bottom surface to which the bag-like member is attached is depressed, the upper end height of the deflated bag-like member can be lowered, and the culvert generated by releasing the damming It is possible to prevent the bag-like member from interfering with the water flow at the point.

In the case of the undulation weir of the invention according to claim 3 , the second on-off valve is opened and closed by the rotation of the shaft by the operation lever. When the second on-off valve is locked in the closed state by the lock mechanism and the first on-off valve of the air supply pipe is closed, the bag-like member is maintained in an inflated state.

In the case of the undulating weir of the inventions according to claims 4 and 5 , the locking piece attached to the shaft rotated by the operating lever can be locked to the lock member by swinging the operating lever. Thus, the rotation of the shaft for opening and closing the second on-off valve is stopped, and the second on-off valve is locked in the closed state. In this state, when the height position of the float changes according to the water level, the lock member is displaced in response to the change in the float position, and the locked state with the locking piece is released. Then, the weight rotates the shaft to open the second on-off valve. Therefore, it is possible to automatically and mechanically release the stop by the stop means and discharge air from the bag-like member.

In the case of the undulating weir of the invention according to claim 6 , since the bag-like member is provided in the branch waterway, even if the main waterway side is full, the bag-like member is deflated based on the water level and into the branch waterway Since water flows, it is possible to manage the water flow well.

  Embodiments of the present invention will be specifically described below.

  FIG. 1 is a plan view showing a configuration inside a culvert provided with an undulating dam according to an embodiment of the present invention, FIG. 2 is a plan view showing the vicinity of the undulating dam of FIG. 1, and FIG. 4 is an enlarged plan view showing an A portion in FIG. 2, FIG. 4 is a front view of FIG. 2, and FIG. 5 is a cross-sectional view taken along the line BB of FIG.

  The place where the water flow is adjusted by the undulating weir 10 of the present embodiment is a water channel provided in the ground, that is, in the underdrain 1, and the underdrain 1 has a main water channel 2 and a branched water channel 3 branched therefrom. The bag-like member 11 constituting the undulation weir 10 is provided in the vicinity of the inlet 4 of the branch water channel 3. In addition, 2a in FIGS. 1-5 is a partition wall which partitions off the main water channel 2 and the branch water channel 3. FIG.

  The hoisting dam 10 includes the bag-shaped member 11, air supply means 20 for supplying air to the bag-shaped member 11, and air in the bag-shaped member 11 so as to maintain the bag-shaped member 11 in an inflated state. Stop means 30 for stopping entry and exit, and air discharge means 40 for automatically releasing the stop by the stop means 30 and discharging air from the bag-like member 11 when the water level of the main water channel 2 reaches a predetermined height. It has.

  The bag-like member 11 is made of, for example, rubber and cloth, and has a generally bowl shape in a swollen state. The bottom portion 11a is attached to a concave bottom surface 3a in the vicinity of the inlet of the branch water channel 3, and the branch water channel 3 is attached to both side surfaces 3b and 3c so that the central portion in the width direction is lowered and the concave bottom surface 3a is not easily affected by water resistance. It has become. In addition, the bag-shaped member 11 may be in the form of a bag itself, or may have an opening. However, in the case of having an opening, the edge of the opening is brought into close contact with the surface of the branch water channel 3, for example, the bottom surface 3a and both side surfaces 3b, 3c of the branch water channel 3 to form a sealed space with the surface of the branch water channel. That's fine.

  The air supply means 20 includes an air supply pipe 21 having one end 21a connected to the bottom of the bag-like member 11 and the other end 21b disposed in a manhole 5 provided in the vicinity of the underdrain 1. A joint member 22 is attached to the other end 21b of the pipe 21, and a first on-off valve 23 is provided at a position slightly closer to the one end 21a than the joint member 22 (see FIG. 5). 2 is an operation lever that opens and closes the first on-off valve 23.

  For example, as shown in FIG. 6, the joint member 22 is connected to a mating joint member 103 provided at an end of a supply pipe 102 connected to an air supply blower 101 conveyed by a truck 100 or the like. It is preferable that the joint member 22 and the mating joint member 103 can be connected with one touch.

  Air supply from the blower 101 is performed with the first on-off valve 23 opened through the operation lever 23a. The air supply is stopped based on, for example, the pressure value of the pressure gauge 24 provided in the vicinity of the operation lever 23a. As a result, the bag-like member 11 swells into a substantially bowl-like standing state, and blocks the water flow in the branch water channel 3. Further, by keeping the first opening / closing valve 23 in the closed state, the bag-like member 11 is prevented from entering and exiting through the air supply pipe 21.

  In this embodiment, the air discharge means 40 includes an air discharge pipe 41 that is branched from the middle of the air supply pipe 21, and discharges air from the bag-like member 11 through the air discharge pipe 41. It has become. The air discharge pipe 41 may be provided in communication with the bag-like member 11 in a state of being completely separated from the air supply pipe 21.

  As shown in FIGS. 3, 5 and 7 (partially enlarged view of FIG. 5), the stopping means 30 has a second on-off valve 31 provided in the middle of the air discharge pipe 41, and the second on-off valve 31 is opened and closed by operating an operating lever 33 attached to the shaft 32. In this embodiment, the operation lever 33 is disposed in the vicinity of the operation hole 6 penetrating from the ground to the inside of the underdrain 1 provided separately from the manhole 5 (see FIG. 3). The operation lever 33 can be operated from the operation hole 6. The manhole 5 and the operation hole 6 are provided with a lid.

  Moreover, the stop means 30 is provided with the lock mechanism 34 which locks the 2nd on-off valve 31 to a closed state, as shown in FIG.3 and FIG.8 (front view which looked at FIG. 3 from the near side). The lock mechanism 34 includes a locking piece 35 attached to the shaft 32 and a lock member 36 that locks the locking piece 35 and stops the swinging of the locking piece 35. In the present embodiment, the lock member 36 is a pair of plate members arranged in parallel with a gap, and one end 36a is rotatably supported, and the other end 36b is sandwiched between the pair of plate members in the horizontal direction. A locking member 36c having a circular cross section having an axial center is provided. The locking piece 35 is provided on the distal end side when the shaft 32 is rotated in the arrow C direction so that the operating lever 33 changes from the horizontal direction indicated by the two-dot chain line to the vertical direction indicated by the solid line (partially broken line). The locking member 36c of the locking member 36 is pushed up by the inclined surface 35a, and is passed through the lower side of the locking member 36c to be locked to the locking member 36c.

  The air discharge means 40 further rotates the shaft 32 in the direction of the arrow D that opens the second on-off valve 31 and the float 42 whose height position changes according to the water level as shown in FIGS. And a weight 43. The float 42 is disposed on the main water channel 2 side (see FIG. 5), and has a hook 42a for pushing the lock member 36 upward by rising in the same manner as the float 42 as the water level rises in the main water channel 2. When the water level is above a certain level, the ridge 42a pushes the lock member 36 upward. Then, when the shaft 32 is rotated in the direction of arrow D by the weight 43 with the base end 43a side attached to the shaft 32, the locking of the locking piece 35 to the locking member 36c is released. As shown by the solid line in FIG. 7 and FIG. 8, the weight 43 is arranged so that the distal end 43 b side opposite to the base end 43 a is obliquely upward as the locking piece 35 and the locking member 36 c are locked. The shaft 32 is rotated so that the locking piece 35 is released from the locking member 36c as the locking member 36 is lifted. However, in FIG.2 and FIG.3, the weight 43 is represented in the state which faced horizontally.

  The operation content of the hoisting weir 10 according to the present embodiment configured as described above will be described.

  Preparation for inflating the bag-like member 11 is performed at the beginning of installation and after once used. As the preparation, the operation lever 33 is manually swung from the operation hole 6 to close the second on-off valve 31, open the first on-off valve 23 in the manhole 5, and connect the joint member 22 to the joint member 22. The mating joint member 103 on the air supply blower 101 side is connected. Then, air is supplied from the blower 101 to the bag-like member 11 through the air supply pipe 21. Thereby, the bag-shaped member 11 swells, and becomes a substantially bowl-like standing state.

  Next, the first on-off valve 23 is closed, and the mating joint member 103 is removed from the joint member 22. Thereby, both the 1st on-off valve 23 and the 2nd on-off valve 31 will be in a closed state, the bag-shaped member 11 will be maintained in the state which swelled, and the inlet of the branch waterway 3 will be dammed up. As a result, water flows only in the main water channel 2.

  Thereafter, when the water level increases due to flooding or the like, the water level of the main water channel 2 becomes high, and when the water level reaches a predetermined height H (see FIG. 4), the float 42 floats as the water level rises, The hook 42a pushes up the lock member 36 that holds 35. Then, the locked state of the locking piece 35 is released. Along with this, the weight 43 rotates the shaft 32 to open the second on-off valve 31, the bag-like member 11 is deflated, and the water flow blocking in the branch water channel 3 is released. Therefore, even when the main water channel 2 side is full, the bag-like member 11 is deflated based on the water level, and water flows through the branch water channel 3, so that the water flow can be well controlled.

  Therefore, according to the present embodiment, when the water level of the main water channel 2 reaches the predetermined height H, a mechanism for automatically and mechanically switching the bag-like member 11 from the inflated state to the deflated state, that is, a power source or human power Therefore, even if it is installed in the culvert 1, it is not necessary to enter the culvert 1 and perform operations, etc., and it is easy to deal with in an emergency such as a flood. Further, when the bag-like member 11 is deflated to release the water flow blocking in the branch water channel 3, the bag-like member 11 is pressed by the water flow and further deflated and becomes smaller, and is stored on the bottom surface 3 a side of the branch water channel 3. Therefore, it can be used regardless of the height of the culvert 1 and can be installed in any culvert 1. By recessing the bottom surface 3a, the height of the upper end of the deflated bag-like member 11 can be lowered, and the bag-like member 11 can be prevented from interfering with the water flow. As the depth of the depression of the bottom surface 3a, a dimension that substantially matches the height dimension of the upper end of the deflated bag-like member 11 is preferable in that it can reduce unevenness and flow resistance.

  Moreover, in this embodiment, since the joint member 22 provided in the edge part of the air supply piping 21 which supplies air to the bag-shaped member 11 is arrange | positioned in the manhole 5, air supply to the bag-shaped member 11 is carried out. It can be performed from the outside of the underdrain 1. Therefore, it is easy to inflate the bag-like member 11 again at regular inspections, or after the bag-like member 11 is deflated and the water flow blocking in the branch water channel 3 is released. If an air supply blower is prepared in the vicinity of the manhole 5, air supply to the bag-like member 11 is possible, and therefore it is not necessary to always install an air supply blower in the vicinity of the undulation weir.

  In the above-described embodiment, an operation hole for operating the operation lever is provided separately from the manhole. However, the present invention is not limited to this, and the operation hole is omitted depending on the position where the operation lever is provided. Of course, it is good also as a structure which operates from a manhole.

  In the above-described embodiment, the locking mechanism is constituted by a locking piece and a locking member, but the present invention is not limited to this. For example, a configuration in which a protrusion is provided on the outer periphery of the shaft and a lock member is hooked on the protrusion may be used.

It is a top view which shows the structure in the culvert where the undulation weir concerning one Embodiment of this invention was provided. It is a top view which shows the vicinity of the undulation weir of FIG. FIG. 3 is an enlarged plan view showing a portion A in FIGS. 1 and 2. FIG. 3 is a front view of FIG. 2. It is sectional drawing by the BB line of FIG. 4 (right view of FIG. 4). It is a schematic diagram which shows the blower for air supply which can be conveyed. It is the elements on larger scale of FIG. It is the front view which looked at FIG. 3 from the near side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underdrain 2 Main water channel 3 Branch water channel 3a Bottom surface 5 Manhole 6 Operation hole 10 Undwelling weir 11 Bag-shaped member 20 Air supply means 21 Air supply piping 21a One end 21b Other end 22 Joint member 23 1st on-off valve 30 Stop means 31 2nd open / close Valve 33 Operation lever 34 Lock mechanism 35 Locking piece 36 Lock member 40 Air discharge means 41 Air discharge pipe 42 Float 43 Weight 101 Air supply blower 102 Supply pipe 103 Joint member on the other side

Claims (6)

A hoisting weir that undulates according to the water level in the underdrain,
A bag-like member attached to the bottom surface of the culvert, inflated by air supply and damming the water flow of the culvert, and deflated by air discharge to release the damming of the water flow in the culvert;
Air supply means for supplying air to the bag-like member;
Stop means for stopping air discharge of the bag-like member to maintain the bag-like member in an inflated state;
When the water level reaches a predetermined height, air discharge means for automatically releasing the air discharge stop by the stop means and discharging air from the bag-like member ,
The air supply means includes an air supply pipe having one end connected to the bag-like member and being disposed in a manhole provided at the other end in the vicinity of a culvert, and having a joint member attached to the other end. A hoisting weir characterized in that a mating joint member provided at an end of a supply pipe connected to a transportable air supply blower is connected to the joint member . The undulating weir according to claim 1 ,
The hoisting weir, wherein the bottom surface to which the bag-like member is attached is depressed. In the undulation weir according to claim 1 or 2 ,
The air discharge means has an air discharge pipe discharged from the bag-like member, and the stop means is provided in a first on-off valve provided in the air supply pipe and the air discharge pipe, and is operated by an operation lever. A bag-like member comprising a second on-off valve that is opened and closed by a rotating shaft and a lock mechanism that locks the second on-off valve in a closed state, and by closing the first on-off valve and the second on-off valve The undulation weir is characterized by stopping the entry and exit of air. In the undulation weir according to claim 3 ,
The locking mechanism includes a locking piece attached to the shaft, and a locking member that locks the locking piece and stops swinging of the locking piece,
The air discharging means has a float whose position changes according to the water level, displaces the locking member to release the locking state with the locking piece, and a shaft in a direction to open the second on-off valve. A hoisting weir characterized by having a weight to be rotated. In the undulation weir according to claim 3 or 4 ,
The hoisting weir is characterized in that the operating lever is provided at a position where it can be operated from the ground. In the undulation weir according to any one of claims 1 to 5 ,
The hoisting dam has a main water channel and a branch water channel branched from the main water channel, and the bag-like member is provided in the branch water channel.

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