JP2003306928A - Temporary interrupting facility for water channel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple temporary interrupting facility of a water channel having an open surface and pipes having various shapes of cross sections. <P>SOLUTION: A gutter having a channel-shaped cross section for keeping a predetermined gap to a peripheral wall of the channel during the use of this facility is formed together with an interrupting board of the channel, a rubber body having a circular cross section for the gutter is inserted, when there is still an opening, it is tightly sealed, and an air vent valve is provided at the top of the groove, a pressured fluid supply valve (including a three- way switching valve) is installed in a pipe connected to the gutter, and a water drain valve is provided at a lower position of the interrupting board. For a channel having an open surface, a gutter is formed by directly fixing an L-shaped frame to the interrupting board, and it is much better to press the frame having an L-shaped cross section directly to the interrupting board for forming a gutter, a rubber body at the right and left tops of the gutter is pressed to the inside of gutter with a pressing piece and the rubber body is tightly adhered to the bottom of the gutter and projected portions contacting to the bottom of the channel are fixed to the interrupting board at the water side. For a channel having a circular or a square cross section pipe, a gutter is formed by fixing two sheets of flanges to end portion at one side of a ring-shaped board, and a plurality of supports for fixing predetermined gaps are attached in a scattered manner for fixing the gutters at predetermined intervals to the peripheral walls to the end portions at the opposite side of a ring-shaped board. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary cutoff facility for a water channel.

[0002]

2. Description of the Related Art Conventionally, work has been performed to temporarily cut off a water channel having an open surface or a water channel formed by a pipe having various shapes in cross section according to the purpose of the work. That is, dams such as sandbags are blocked in waterways with open surfaces, and in the case of waterways using pipes, a hollow rubber body is inserted into the rubber body to expand air by pressing air into the rubber body. A method of inserting a rubber body sandwiched by plates from both sides into a pipe and bringing the plates on both sides close to each other to raise the circumference of an annular rubber body and block the inside of the pipe is used.

However, in these methods, the work is complicated, space is taken for blocking, and the blocking is often insufficient, and even if the rubber body of various shapes is restored and the blocking is released, it is restored. There is a case where it cannot be done smoothly and there is a need for improvement.

[0004]

DISCLOSURE OF THE INVENTION The present invention is to provide a facility capable of temporarily blocking a water channel having an open surface or a water channel having a pipe having various cross sections by a simple method.

[0005]

The inventor of the present invention uses, as a temporary cutoff facility for a water channel, a groove having a U-shaped cross section so as to maintain a predetermined gap with the peripheral wall 1 of the water channel to be shut off when this facility is used. 3 is integrally formed with the shutoff plate 2 of the water channel, a rubber body 7 having a circular cross section is fitted into the groove 3, and if the groove 3 still has an opening, it is sealed, and an air vent valve 10 is provided at the top of the groove 3. The inventors have found a pipe in which a pressurized fluid supply valve is provided in a pipe communicating with the groove 3 and a water drain valve 11 is provided below the shutoff plate 2.

In this case, the pressurized fluid supply valve is preferably a three-way switching valve 13 capable of switching the pressurized fluid 17 to the pressure water 18 which is the water in the water channel.

Further, in the case of a water channel having an open surface, a frame 4 having an L-shaped cross section is directly fixed to the blocking plate 2 to form a groove 3 having a U-shaped cross section, and pressing pieces are provided at the left and right apex portions of the groove 3. When the rubber body 7 is pressed into the groove 3 by 8 and is in close contact with the bottom of the groove 3, the opening of the groove 3 is sealed.

Further, in the case of a water channel having an open surface, if a projecting member 25 that abuts the bottom of the water channel is fixed at a lower position on the water side of the water blocking plate 2, the water blocking pressure on one side of the water channel is resisted. Even if the top part of 2 is properly fixed, the lower end of the blocking plate 2 does not rotate, which is convenient.

On the other hand, in the case of a water channel with a pipe having a circular or rectangular cross section, two flanges 6 are fixed to one end of the annular plate 5 fixed to the blocking plate 2 so that the cross section is T-shaped. Then, a groove 3 having a U-shaped cross section is formed.

In the case of a water channel using a pipe, 2 of the annular plate 5 is used.
If a plurality of supporting tools 24 for fixing the groove 3 having a U-shaped cross section to the peripheral wall 1 of the water channel at a predetermined gap are dispersedly attached to the end portion on the side where the flanges 6 are not provided, It is convenient for shutting off work.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A facility for temporarily shutting off a water channel according to the present invention is a groove 3 having a U-shaped cross section so as to maintain a predetermined gap with a peripheral wall 1 of the water channel to be shut off when the facility is used. Is integrally formed with the waterway shutoff plate 2 and a rubber body 7 having a circular cross section is fitted into the groove 3, and if there is still an opening in the groove 3, the groove 3 is sealed, and an air vent valve 10 is provided at the top of the groove 3. A pressurized fluid supply valve is provided in a pipe communicating with the inside of the valve 3, and a water drain valve 11 is provided below the shutoff plate 2. The valve is made of galvanized iron or the like.

The rubber body 7 having a circular cross section is rod-shaped or annular (O-ring), and is preferably made of nitrile rubber. The O-ring is used in the case of a water channel with a rectangular pipe having a circular or obtuse cross section. In addition, in the case of a water channel having an open surface with a U-shaped cross section as shown in FIG. 1 or in the case of a water channel using a rectangular pipe having a right angle portion, the rubber body 7 is bent at a right angle. It is formed by cutting into 45 degree inclined surfaces and adhering to each other.

A rubber body 7 having a circular cross section is fitted in the groove 3 having a U-shaped cross section, and if there is still an opening in the groove 3, the rubber body 7 is sealed. Therefore, the pressure applied to the pipe leading to the bottom of the groove 3 is applied. When the pressurized fluid 17 such as water or air is press-fitted through the fluid supply valve, the rubber body 7 is pushed to the open side of the groove 3 as shown in FIG. 3 (the three-way switching valve 13 is used for the pressurized fluid supply valve). Then, while the fitting portion with the groove 3 is left, the flexibility is pressed against the peripheral wall of the water channel so as to be in close contact therewith, thereby blocking the water channel.

Therefore, in the gap between the groove 3 having a U-shaped cross section and the peripheral wall 1 of the water channel, the rubber body 7 is extruded from the groove 3 and the groove 3
It corresponds to the distance until it comes into close contact with the peripheral wall of the water channel due to its flexibility while leaving the fitting portion with.

If the pressurizing fluid supply valve is a three-way switching valve 13 capable of switching the pressurizing fluid 17 to the pressure water 18 which is the water in the water channel as shown in FIG. This is convenient because the pressurization can be maintained for a long time.

In the case of a water channel having an open surface for forming the U-shaped groove 3, as shown in FIGS. 1 and 2, the L-shaped cross section is directly opposed to the peripheral wall 1 of the water channel to the blocking plate 2. Frame 4
Alternatively, it is fixed via a reinforcing frame having an L-shaped cross section with ribs arranged everywhere. Also, since there are openings at the left and right apexes of the groove 3,
If the rubber body 7 there is pressed against the bottom of the groove 3 by the pressing piece 8 and brought into close contact with it, the airtightness on the pressurized fluid 17 side is maintained. As for the pressing method, as shown in FIG. 4, (f) the pressing piece 8 in a state where the rubber body 7 is pressed is fixed by welding or the like, or (g) a bolt is screwed (screwed) onto the welded fixing plate. A member having a portion may be fitted using the screw portion) so that the pressing piece 8 can be moved forward and backward by the rotation of the bolt.

Next, the case of temporarily shutting off a water channel having an open surface will be described more specifically. 1 to 3
As shown in, attach the main valve 12 to the discharge port of the pump 15,
An accumulator 16 is attached to a T-shaped pipe in the middle of the pipe, and is piped to the bottom of the groove 3 via a pressurized fluid supply valve (the three-way switching valve 13 is used in FIGS. 1 to 3). Water is suitable for the pressurized fluid 17, but air can also be used. When the pressurized fluid 17 is water, the pressurized water is supplied between the rubber body 7 and the groove 3 having a U-shaped cross section by the pump 15 with the main valve 12 and the pressurized fluid supply valve opened. Pressurize and press to shut off the waterway.

The blockage of the water channel can be confirmed by raising the water level in one of the water channels. Then pump 15
Even if the main valve 12 between the accumulator 16 and the pump 15 is closed and the pump 15 is stopped, the accumulator 16 accumulates pressure, so that the pressure on the rubber body 7 is maintained for a while. When supplying the pressurized water by the pump 15, the existing air in the groove 3 having a U-shaped cross section is pushed up, so the air vent valve at the top of the groove 3
Temporarily open 10 until water spouts and expels the air.

Instead of depending on the accumulated pressure of the accumulator 16, as shown in FIGS. 1 to 3, when the three-way switching valve 13 is used as the pressurized fluid supply valve, the pressure water 18 generated by the water in the water channel is used.
By operating the control rod 14 which supports the three-way switching valve 13 by the pipe so that the rubber can be communicated between the rubber body 7 and the groove 3 having a U-shaped cross section, FIG.
By switching as in (i), the pressure applied to the rubber body 7 is reliably maintained for a long time. Therefore, the three-way switching valve 13 is provided in advance on the water side of the water channel.

A water drain valve 11 is provided below the shutoff plate 2 on the side opposite to the water in the waterway to facilitate installation and removal of the shutoff plate 2 before and after shutting off work, or when the water level in the waterway is high. In order to alleviate them when they gradually rise or the shutoff plate 2 is pushed by it, open the drain valve 11 and connect a hose to the drain valve 11 if necessary to drain water to another suitable place. Try to induce and eliminate.

To remove the shut-off plate 2, the three-way switching valve 13 is switched to the pressurized fluid 17, the vacuum pump is connected to the pipe (not shown) to reduce the pressure, and the rubber body 7 is drawn into the groove 3. Since the gap is formed with the peripheral wall 1 of the water channel, the blocking plate 2 can be lifted.

When air is used as the pressurized fluid 17, the piping of the pressurized fluid supply valve is connected to the compressor via the operation box, and the pressure from the compressor is adjusted in the operation box to supply the pressurized fluid. The valve is opened and pressurized air is applied into the groove 3, and the rubber body 7 is moved along the side wall of the groove 3 so that the rubber body 7 is brought into close contact with the peripheral wall 1 of the water channel to block the water channel. On this occasion,
It is not necessary to operate the air vent valve 10. In addition, the maintenance and removal of the blocking plate 2 may be performed in the same manner as when the pressurized fluid 17 is water.

In the case of a waterway having an open surface, the blocking plate 2
If a protruding member 25 that abuts the bottom of the water channel when the blocking plate 2 is used is fixed at a lower position on the water side of the blocking plate 2, when the water pressure on the blocking plate 2 is particularly high, the top part of the blocking plate 2 is removed to resist it. Even when properly fixed, the lower end of the blocking plate 2 does not rotate, which is convenient. As the protruding member 25, other than the one shown in FIG. 2, various members such as one having an L-shaped member fixed to the blocking plate 2 can be used.

On the other hand, in the case of temporarily shutting off the water channel by various shapes of tubes such as a Hume tube having a circular cross section and a box-shaped box culvert, the former is shown in FIGS. 6 and 8 and the latter is shown in FIGS. 7 and 8. As described above, the annular plate 5 is fixed to the blocking plate 2 so as to have a T-shaped cross section, and the peripheral wall 1 of the water channel to be blocked and two flanges 6 having a predetermined gap are fixed to one end of the annular plate 5. Then, the groove 3 having a U-shaped cross section is formed.

If there is no right-angled portion in the annular groove 3 formed by the annular plate 5 and the two flanges 6, the O-ring 9 is inserted, and in operation of the three-way switching valve 13, as shown in FIG. A three-way switching valve 13 is provided on the side, and a pipe that extends from the opening of an annular plate 5 that forms a groove 3 having a U-shaped cross section and penetrates the blocking plate 2, and a pressure water in the water channel that penetrates the blocking plate 2 The pipe for receiving and the pipe for the pressurized fluid 17 on the side without water are connected respectively. When the pressurized fluid 17 is water, an air vent valve (not shown) is provided at the top of the groove 3 as in the case of a water channel having an open surface.

Further, when temporarily shutting off the water channel by the pipe, a groove 3 having a U-shaped cross section is formed at an end portion of the annular plate 5 on the side where the flange 6 is not provided at a predetermined gap with respect to the peripheral wall 1 of the water channel. If a plurality of supporting members 24 (five in each of FIGS. 6 and 7) for fixing are dispersed and attached, the shutoff work can be performed smoothly.

A specific example of the support 24 is shown in FIG. A rubber wheel 21, for example, can be used as a protrusion on the rotating plate 20 rotatably attached to the substrate 19 having a U-shaped cross section. In this case, the bolt 23 that is integral with the handle 22 is attached to the board 19
Insert the base from above and loosely fit the base part (meaning that there is a movable gap), install the handle 22 so that it does not come off the top surface of the substrate 19, and attach the bolt to the other end of the rotating plate 20.
23 is loosely fitted, and a horizontal bar that is screwed to the bolt 23 is hung on the lower side of the portion of the rotary plate 20 in a loosely fitted state on both sides thereof, and the handle 22 is turned to rotate the rotary plate 20. Adjust the tilt angle of
The tip of the rubber wheel 21 is brought into contact with the peripheral wall 1 of the water channel, and a plurality of supporting members 24 are provided so that the gap between the groove 3 having a U-shaped cross section and the peripheral wall 1 of the water channel becomes uniform.

[0028]

EFFECTS OF THE INVENTION The temporary water channel shutoff facility of the present invention is easy to handle and can reliably shut off the water channel.

[Brief description of drawings]

FIG. 1 is an overall explanatory view (a) of a waterway shutoff facility having an open surface as seen from the water side, and a side view (b) and a plan view (c) with a part thereof cut away.

FIG. 2 is an overall explanatory view (d) viewed from the water side in the case where a projecting member is provided in a water channel shutoff facility having an open surface, and a side view (e) showing a part thereof.

FIG. 3 is an explanatory view showing a mechanism for moving a rubber body in a waterway shutoff facility having an open surface.

FIG. 4 is an explanatory view (f), (g) showing a specific example of pressing the top of the rubber body in a waterway shutoff facility having an open surface

FIG. 5 is an explanatory view of a three-way switching valve, (h) shows a case where a fluid pressurized by a pump is used, and (i) shows a case where pressure water in a water channel is used.

FIG. 6 is an explanatory view of a water channel shutoff facility using a fume tube as seen from the side without water.

FIG. 7 is an explanatory view of a water channel shutoff facility using a box culvert pipe viewed from the side without water.

FIG. 8 is an explanatory view of a side view of a water channel shutoff facility using a Hume tube and a box culvert tube

FIG. 9 is an explanatory view (j) of a portion for adjusting the position of the rotating plate in the support and an explanatory view (k) showing a mechanism in which the rubber wheel comes into contact with the rotating plate.

[Explanation of symbols]

1 Waterway peripheral wall 2 barrier plate 3 grooves 4 L-shaped frame 5 annular plate 6 flange 7 rubber body 8 pressing piece 9 O-ring 10 Air vent valve 11 Drain valve 12 yuan valve 13 Three-way switching valve 14 control rod 15 pumps 16 Accumulator 17 Pressurized fluid 18 pressure water 19 substrate 20 Rotating plate 21 rubber wheels 22 handle 23 bolts 24 Support 25 Projection member

Claims (6)

[Claims] 1. A groove (3) having a U-shaped cross section so as to maintain a predetermined gap with a peripheral wall (1) of a water channel to be shut off when this equipment is used.
Is integrally formed with the waterway shutoff plate (2), a rubber body (7) having a circular cross section is fitted into the groove (3), and if the groove (3) still has an opening, the groove (3) is sealed. ) Is equipped with an air vent valve (10), a pressurized fluid supply valve in the pipe leading to the groove (3), and a drain valve (11) below the shutoff plate (2). Blocking equipment. 2. The waterway temporary according to claim 1, wherein the pressurized fluid supply valve is a three-way switching valve (13) capable of switching the pressurized fluid (17) to pressure water (18) which is water in the waterway. Shut-off equipment. 3. A groove (3) having a U-shaped cross section is formed by fixing a frame (4) having an L-shaped cross section directly to a blocking plate (2) for a water channel having an open surface. 3. The temporary cutoff facility for a water channel according to claim 1 or 2, wherein the rubber body (7) is pressed into the groove (3) by the pressing pieces (8) at the right and left apexes of (1) and is in close contact with the bottom thereof. 4. The temporary water channel according to claim 3, wherein when the barrier plate (2) is used, a projecting member (25) that abuts a bottom of the channel is fixed to a lower position on the water side of the barrier plate (2). Blocking equipment. 5. An annular plate (5) fixed to a blocking plate (2) so as to have a T-shaped cross section, for use as a water channel by a pipe, with two flanges (6) fixed to one end thereof. The waterway temporary shutoff facility according to claim 1 or 2, wherein a groove (3) having a U-shaped cross section is formed. 6. A groove (3) having a U-shaped cross section is provided at an end portion of the annular plate (5) where the two flanges (6) are not provided, with a predetermined gap with respect to the peripheral wall (1) of the water channel. 6. The temporary cutoff facility for a waterway according to claim 5, wherein a plurality of support members (24) for fixing by means are attached.