JP2003268751A - Tide gate and construction method for tide gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tide gate having a structure applicable to a large span, capable of securing safety at fully opening time, opening-closing operation time, and fully closing time, openable-closable in a short time, and becoming no obstruction to using the other sea area at normal time, and a construction method of the tide gate. <P>SOLUTION: A box body 7 is formed by arranging a gate body 8 composed of a door body 9, an arm 11a, and an arm 11b by a hinge structure 17, and is immersed in the ground 3. A fixed damper 13 is arranged between the arm 11b and the box body 7. The door body 9 is supported by two points of a door stop part 33a arranged on a bottom surface 31 of the box body 7 or a door stop part 33b arranged on a wall surface 29b and a rotary shaft 15 at stationary time. When opening-closing the tide gate 1, after adjusting buoyancy of the door body 9 by supplying-discharging water and supplying-exhausting air of a door body inner space 21 by using a water supply-discharge device 37 and an air supply-exhaust device 39, a rod 19 is extended-contracted by opening a valve 59 of the fixed damper 13, and the gate body 8 is rotated in the vertical direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tide gate and a method for constructing a tide gate.

[0002]

2. Description of the Related Art Years in low-lying coastal areas are at risk from floods from the sea due to storm surges and tsunamis. In order to respond to this, storm surges and
It is necessary to install a tsunami gate.

Conventionally, the types of tide gates are (1) flap gate type, (2) vertical lift type, (3) floating gate type, (4) visor gate type,
(5) Submerged radial gate type, (6) sector gate type, (7) rubber movable weir, etc.

(1) In the flap gate type, the lower end of the door body is used as a hinge, and the door body is rotated up and down to open and close the water gate. (2) The vertical lift type performs vertical opening / closing operation of the door body and is widely used from small size to large size. (3) In the floating gate type, the buoyancy is controlled by pouring and draining water inside the door to raise and lower the door to open and close the floodgate. Movement is done using tugs. (4) In the visor gate type, both ends of an arc-shaped door having a water channel span as its diameter are used as hinges, and the door is rotated to open and close the water gate.

(5) In the submerged radial gate type, a fan-shaped water gate in which a supporting member is fixed to an arc-shaped door body,
Open and close by rotating vertically around the center of the fan. During normal times, the door body is rotated downwards to be stored in the navigation floor, and at the time of inspection, it is rotated upwards and put out in the air. (6) The sector gate type has a structure in which a radial gate type floodgate is laid sideways, and is opened and closed by rotating the floodgate horizontally. When fully closed, the doors are held together from both sides. (7) The rubber movable weir inserts air and water into the rubber tube.
The sluice gate is opened and closed by discharging it.

[0006]

[Problems to be Solved by the Invention] However,
The types (1) and (3) cannot secure stability against waves, currents, winds, and earthquakes when fully open, during opening and closing, and fully closed. The types (2), (4), and (5) are not structures that can be applied to a large span of up to about 600 m, which is necessary considering the route conditions in Japan. The form of (6) is
It impedes the use of other sea areas such as navigation of ships. The type (7) requires time for opening and closing.

The present invention has been made in view of the above problems, and an object thereof is to have a structure applicable to a large span and to ensure stability at the time of full opening, opening / closing operation, and full closing. The purpose of the present invention is to provide a tide gate and a method of constructing a tide gate that can be opened and closed in a short time and does not hinder the use of other sea areas in normal times.

[0008]

A first aspect of the invention for achieving the above-mentioned object has a box and an inner space, and air and water can be supplied into the inner space. A tide gate, comprising: a rotatably provided door body and a drive means for rotating the door body.

The door body has, for example, an arcuate cross section and has a space inside. The door body is provided with a supply / exhaust pipe and a water supply / drain pipe from the inner space to the outside of the door body. The air supply / exhaust pipe and the water supply / drain pipe are for changing the amount of water (water level) in the door body and adjusting the buoyancy of the door body. In order to easily perform air supply / exhaust and air supply / drainage in the air inside the door, it is preferable to provide the air supply / exhaust pipe in the upper part of the inner air and the water supply / drain pipe in the lower part.

A connecting member is provided on the door body. The connecting member is, for example, a plurality of arms that form a fan shape with the door body as an arc portion. The door body is rotatably installed on the box body by hinge-connecting the connecting member to the box body. A hydraulic fixing / attenuating device or the like is used as a driving means for rotating the door body. The fixing / damping device is provided, for example, between the connecting member and the box, and when the fixing / damping device is expanded / contracted, the door body rotates around the hinge connection of the end portion of the connecting member.

If necessary, the box body is provided with an air supply device, a ventilation pipe connected to the air supply device, a water supply device, and a water passage pipe connected to the water supply device. The ventilation pipe and water pipe are, for example,
It is installed in the wall of the box, and when the door reaches a predetermined position, the air supply device / water supply device of the box and the air supply / exhaust pipe / water supply / drain pipe of the door body are connected via the ventilation pipe / water pipe. Aeration and water can be passed between them. Alternatively, a ventilation pipe / water passage pipe may be connected to the door body so that the door body can be constantly ventilated and water can be passed.

According to the first aspect of the present invention, a door body having an inner space and capable of supplying air and water is installed in the box body. Further, a drive means for rotating the door body is provided. Using the air supply and water supply devices installed in the box, and the air supply and exhaust pipes and water supply and drain pipes installed in the inner space of the door, let air and water flow in and out of the door, and the water level in the inner space of the door Is adjusted to change the buoyancy, and then the door is rotated by using the driving means. In normal times, the door is rotated downwards to be stored inside the box, and when fully closed it is rotated upwards to close the water channel.

A second aspect of the present invention is a step (a) of manufacturing a door body having an inner space capable of supplying air and water, and rotatably installing the door body in a box body. A method for constructing a sea tide gate, comprising the step (b) and the step (c) of immersing the box body on the bottom of the water.

A second invention is a method for constructing the tide sluice of the first invention. In the second invention, first, a door body having an inner space and capable of supplying air and water is manufactured. Next, the door body is rotatably installed on the box body, and the box body is sunk on the bottom of the water. For efficient construction, a box part provided with an air supply device and a water supply device in the dock is produced in parallel with the production of the door body in the factory.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a perspective view of a tide gate 1. As shown in FIG. 1, the tide gate 1 includes a gate body 8 including a door body 9, arms 11a and 11b, a box body 7 supporting the gate body 8 and the like. The box 7 is sunk in the ground 3 at the bottom of the water. The gate body 8 is attached to the box body 7 so as to be rotatable in the direction of arrow B shown in FIG.

FIG. 2 is a flow chart showing a method of constructing the tide gate 1. The construction method of the tide gate 1 will be described with reference to the flowchart shown in FIG. First, the ground 3 at the sinking design image position of the box 7 shown in FIG. 1 is excavated (step 101), and the bottom ground is improved (step 102).

In parallel with steps 101 and 102, the box 7 is manufactured in the dock (step 103).
FIG. 3 is a cross-sectional view of the sea tide gate 1 when it is fully opened, that is, when the gate body 8 is at the position shown by the alternate long and short dash line in FIG.
It is sectional drawing by -A. FIG. 4 is a cross-sectional view of the sea tide gate 1 when it is fully closed, that is, a cross-sectional view taken along the line AA when the gate body 8 is at the position shown by the solid line in FIG.

As shown in FIGS. 1, 3 and 4, a box 7
Is a rectangular parallelepiped shape in which the bottom surface 31 is provided with side walls 29a, 29b, 29c and 29d.
The top is open. The wall surface 29a has a device room 57,
It has such a thickness that the apparatus chamber 35 and the like can be installed. The inner surface 28a of the wall surface 29a is formed by providing the horizontal surface 16 and the horizontal surface 18.

On the inner side surface 30 of the bottom surface 31, a door stop 33a is fixed near the center. The door stop portion 33a is, for example, a rectangular columnar member having a trapezoidal cross section, and has a wall surface 29a.
It is installed in parallel with the wall surface 29b. A waterproof rubber 36 is fixed to the slope 34 of the door stop 33a. Wall 29b
On the inner side surface 28b of the
Is fixed. The door stop portion 33b is, for example, a rectangular plate-shaped member. A waterproof rubber 38 is fixed to the lower surface 32 of the door stop portion 33b.

A water supply / drainage device 37 and an air supply / exhaust device 39 are housed in the device chamber 35 in the wall surface 29a. Water supply / drainage device 37
Is connected to the two water pipes 41a and 41b. The water pipe 41a passes through the inside of the bottom surface 31, and the end portion is the door stop portion 33.
It is embedded in a. The water pipe 41b has a bottom surface 31 and a wall surface 2.
The end passes through 9b and is embedded in the door stop 33b.
The air supply / exhaust device 39 includes two ventilation pipes 43a and 43b.
Leads to. The ventilation pipe 43a passes through the bottom surface 31, and the end portion is embedded in the door stop portion 33a. The ventilation pipe 43b passes through the bottom surface 31 and the wall surface 29b, and the end portion is the door stop portion 33b.
Buried in.

In parallel with step 103, the gate body 8
Is manufactured in a factory (step 104). As shown in FIGS. 3 and 4, the gate body 8 is composed of a door body 9, an arm 11a, an arm 11b, and the like. The door 9 has an arcuate vertical cross section, and has a box-like shape having a door internal space 21 therein. On the inner peripheral surface 4 of the door body 9, the arm 1 is provided near the upper edge portion 10.
One end of 1a is fixed and an arm 11b is provided near the lower edge 12.
One end of is fixed. The arms 11a and 11b are rod-shaped members, and are the door body 9, the arm 11a, and the arm 11b.
Forms a fan shape having the door body 9 as an arc portion.

On the outer peripheral surface 6 of the door body 9, a convex portion 14 is provided on an extension of the lower edge portion 12. The protrusion 14 is, for example, a rectangular plate-shaped member. 5 is an enlarged sectional view of the door stop portion 33a and the convex portion 14 in the state of FIG. 3, and FIG. 6 is an enlarged sectional view of the door stop portion 33b and the convex portion 14 in the state of FIG.
As shown in FIGS. 3 to 6, the door body 9 includes a supply / exhaust pipe 23.
And the water supply / drainage pipe 25 is installed.

As shown in FIGS. 5 and 6, the supply / exhaust pipe 23
Are installed along the outer edge portion 22 of the door inner space 21. One end of the air supply / exhaust pipe 23 is provided at an upper portion of the door inner space 21 with an air supply / exhaust port 51.
To form. The other end of the air supply / exhaust pipe 23 is embedded in the convex portion 14 of the door body 9. The end of the air supply / exhaust pipe 23 embedded in the convex portion 14 branches in two directions, and the air supply / exhaust port 53a and the air supply / exhaust port 53b are formed in the end surface 20a and the end surface 20b of the convex portion 14, respectively.

The water supply / drain pipe 25 is arranged near the lower end 12 of the door 9. One end of the water supply / drainage pipe 25 forms a water supply / drainage port 45 at a lower portion of the door body space 21. The other end of the water supply / drainage pipe 25 is embedded in the convex portion 14 of the door body 9. The end of the water supply / drainage pipe 25 embedded in the convex portion 14 branches in two directions,
The water supply / drainage port 47a and the water supply / drainage port 47b are formed on the end surface 20a and the end surface 20b, respectively.

A valve 46a is provided near the water supply / drainage port 47a in the water supply / drainage pipe 25, and a valve 46b is provided near the water supply / drainage port 47b. A valve 52a is provided near the air supply / exhaust port 53a in the air supply / exhaust pipe 23, and a valve 52b is provided near the air supply / exhaust port 53b.

As shown in FIG. 5, a water pipe 41a and a ventilation pipe 43a are embedded in the door stop 33a on the bottom surface 31 of the box 7. The end of the water pipe 41a is a door stop 33
A water inlet 49a is formed on the slope 34 of a, and an end of the ventilation pipe 43a forms a vent 55a on the slope 34 of the door stop 33a. The door stop portion 33a supports the door body 9 when the tide gate 1 is fully opened, and at this time, the water passage port 49a is connected to the door body 9a.
Faces the water supply / drainage port 47a provided on the end surface 20a of the convex portion 14. Similarly, the ventilation port 55a faces the air supply / exhaust port 53a.

As shown in FIG. 5, the waterproof rubber 36 fixed to the slope 34 of the door stop 33a has a waterproof rubber 36a,
It is composed of a waterproof rubber 36b and a waterproof rubber 36c. The waterproof rubber 36b is provided between the vent 55a and the water passage 49a. The water-stop rubber 36a and the water-stop rubber 36c are provided on both sides of the water-stop rubber 36b, respectively, on the vent 55a and the water passage 49a.
It is set up across. The waterproof rubber 36 is used as a seal during water passage / ventilation between the door stop portion 33 a of the box body 7 and the convex portion 14 of the door body 9.

Further, as shown in FIG. 6, the wall surface 2 of the box 7 is
The water pipe 41b and the ventilation pipe 4 are provided in the door stop 33b of 9b.
3b is buried. The end of the water pipe 41b embedded in the door stop 33b is bent inside the door stop 33b to form a water passage 49b on the lower surface 32 of the door stop 33b. The end portion of the ventilation pipe 43b forms a ventilation port 55b on the lower surface 32 of the door stop portion 33b. The door stop 33b is
The door body 9 is supported when the tide gate 1 is fully closed, and at this time, the water passage port 49b faces the water supply / drainage port 47b provided on the end surface 20b of the convex portion 14 of the door body 9. Similarly, vent 55b
Faces the air supply / exhaust port 53b.

As shown in FIG. 6, the waterproof rubber 38 fixed to the lower surface 32 of the door stop 33b is a waterproof rubber 38a,
It is composed of a waterproof rubber 38b and a waterproof rubber 38c. The waterproof rubber 38b is provided between the ventilation port 55b and the water communication port 49b. The water-stop rubber 38a and the water-stop rubber 38c are provided on both sides of the water-stop rubber 38b with a vent 55b and a water passage 49b, respectively.
It is set up across. The water blocking rubber 38 serves as a seal for water passage and ventilation between the door stop portion 33b of the box body 7 and the convex portion 14 of the door body 9, and also on the water surface 5a side and the water surface 5b side shown in FIG. Used for stopping water.

After the manufacture of the box 7 and the gate body 8 is completed, the gate body 8 is set on the box 7 (step 105). As shown in FIGS. 3 and 4, the arm 11 a of the gate body 8 is
The arm 11b is coupled to the horizontal surface 16 formed on the wall surface 29a of the box 7 by using the hinge structure 17. In the hinge structure 17, the rotating shaft 15 is provided as a central axis of the vertical rotation of the gate body 8.

Further, between the arm 11b and the box 7, an expandable / contractible hydraulic fixing / attenuating device 13 is attached. The fixed damping device 13 is used as a drive device for rotating the gate body 8 in the vertical direction. 7 is a schematic sectional view of the fixing / damping device 13 in the state shown in FIG. 3, FIG. 8 is a schematic sectional view of the fixing / damping device 13 in expansion and contraction, and FIG. 9 is a fixing / damping device 13 in the state shown in FIG. FIG.

As shown in FIGS. 7 to 9, the fixing / damping device 13 includes a cylinder 73, a rod 19 which can be put in and taken out from the cylinder 73, a pipe 61 for connecting the upper and lower parts of the cylinder 73, and a pipe 61 in the middle thereof. It is composed of a valve 59 and the like provided. A highly viscous liquid 63 such as oil is filled inside the cylinder 73 and the pipe 61 of the fixing / damping device 13.

The inside of the cylinder 73 is vertically divided by a piston 79 fixed to the lower portion of the rod 19. Piston 7
The movement of the liquid 63 between the upper and lower sides of 9 is performed via the pipe 61. The seal 81 prevents the liquid 63 from flowing around the piston 79.
To prevent it from moving up and down. The valve 59 controls the movement of the liquid 63 in the tube 61.

The fixing / damping device 13 can expand and contract the rod 19 by moving the liquid 63. When the liquid 63 in the pipe 61 moves in the direction of arrow I shown in FIG. 8, the piston 79 and the rod 19 move integrally in the direction of arrow J. When the liquid 63 in the pipe 61 moves in the direction of arrow K, the piston 79 and the rod 19 move integrally in the direction of arrow L. The seal 77 prevents the liquid 63 from leaking from the insertion port 75 of the rod 19.

As shown in FIGS. 3 and 4, the upper end 69 of the rod 19 of the fixing / damping device 13 is joined to the arm 11b by a pin joint 65. In addition, the lower end portion 7 of the cylinder 73
1 is on the horizontal plane 18 formed on the wall surface 29a of the box 7,
They are joined using a hinge structure 67. The valve 59 is the wall surface 29
It is stored in the device room 57 provided inside a. Tube 61
Is a material that can follow the movement of the fixing / damping device 13,
It is arranged so as to penetrate the wall surface 29a.

Next, the box 7 is sunk (step 10).
6) Complete the tide gate 1 (step 107). That is, the box 7 integrated with the gate main body 8 is installed on the ground 3 which has been excavated and improved at the bottom in steps 101 and 102, and the state shown in FIG. 5 is obtained.

Next, the operation of the tide gate 1 will be described with reference to FIGS. As shown in FIG. 3, the water surface 5
At a normal level, the gate body 8 is completely stored inside the box 7. At this time, a sufficient amount of water so that the door body 9 does not float up is injected into the door body space 21 and the water surface 2
Fill up to 7a with water. The valves 46a and 46b in the water supply / drain pipe 25 of the convex portion 14 of the door body 9, the valve 5 in the water supply / exhaust pipe 23
2a and the valve 52b are closed. Further, as shown in FIGS. 3 and 7, the valve 59 of the fixing / damping device 13 is closed to fix the rod 19 so that the gate body 8 does not move.

In the state shown in FIG. 3, since there is no structure above the water bottom surface 2, there is no hindrance to the use of the ocean space above the tide gate 1 such as navigation of a ship. Also,
Since the gate body 8 is supported by the door stop portion 33a and the rotating shaft 15 at two points, it is possible to prevent the gate body 8 from swaying due to waves, tidal currents, and wake waves of the ship.

When the tide gate 1 is closed, the gate body 8 is rotated in the direction of arrow C shown in FIG. When the door 9 is floated, first, the valve 59 of the fixing / damping device 13 is kept closed and the device chamber 35 of the box 7 is closed.
The water supply / drainage device 37 and the air supply / exhaust device 39 in the inside are operated, the valve 46a in the water supply / drainage pipe 25 and the valve 52a in the air supply / exhaust pipe 23 (FIG. 5) are opened, and drainage and air supply of the door inner space 21 are performed. , The buoyancy of the door body 9 is secured.

The water inside the door body 21 is drained from the water supply / drainage port 45 as shown by the arrow E in FIG. 5, and returns to the water supply / drainage device 37 via the water supply / drainage pipe 25, the water supply / drainage port 46a, the water supply port 49a, and the water supply pipe 41a. . In addition, the air sent from the air supply / exhaust device 39 includes the ventilation pipe 43a, the ventilation port 55a, and the air supply / exhaust port 53.
a, through the air supply / exhaust pipe 23, the air is supplied from the air supply / exhaust port 51 to the door inner space 21 as shown by an arrow F in FIG. The water level in the door inner space 21 falls, for example, from the water surface 27a shown in FIG. 3 to the water surface 27b shown in FIG.

After the drainage / air supply of the air inside the door 21 provides sufficient buoyancy against the downward load received by the door body 9 when the tide gate 1 is closed, the valve 46a in the water supply / drainage pipe 25,
The valve 52a in the air supply / exhaust pipe 23 is closed. Then, the valve 5 of the fixing / damping device 13 is maintained while maintaining the amount of water in the door inner space 21.
Open 9. In FIG. 3, the fixing / damping device 13 is in the state shown in FIG. 7, but as shown in FIG. 8, when the valve 59 is opened and the liquid 63 inside the cylinder 73 is moved in the direction of the arrow I, the piston 79 and The rod 19 rises in the direction of arrow J, and the gate body 8 rotates upward. Fixed and damping device 1
3 damps the vibration of the door body 9 to levitate the gate body 8.

After securing the buoyancy of the door body 9, by using the fixing / damping device 13, the gate main body 8 can be stably raised in a short time even if there are waves or currents on the water surface 5.

When the convex portion 14 of the door 9 reaches the door stop 33b, the valve 59 of the fixing / damping device 13 is closed to close the rod 1
9 is fixed, the movement of the gate body 8 is stopped, and the state shown in FIG. 4 is obtained. Since the waterproof rubber 38 is provided between the door-stop portion 33b and the convex portion 14, it is possible to obtain waterproofing between the outside and the inside of the door body 9, that is, the water surface 5a side and the water surface 5b side. The water levels inside and outside the door body 9 are the water level 5 as shown by the solid line in FIG.
There are cases where the water surface 5b is higher than a, and cases where the water surface 5a is higher than the water surface 5b, as indicated by the one-dot chain line.

The weight of the door body 9 is such that the vertically upward component of the pressure acting on the outer periphery of the door body 9 always exceeds the gravity of the door body 9 even if a water level difference occurs on both sides of the door body 9. Designed to. Therefore, in the closed state as shown in FIG. 4, the gate main body 8 is supported by the downward force at the two points of the door stop portion 33b and the rotating shaft 15, and does not sway due to wave force or water level difference.

When the tide gate 1 is opened, the gate body 8 is rotated in the direction of arrow D shown in FIG. When the door 9 is to be sunk, first, the valve 59 of the fixing / damping device 13 is closed and the water supply / drainage device 37 and the water supply / exhaust device 39 in the device chamber 35 of the box body 7 are operated to move the water in the water supply / drainage pipe 25. The valve 46b and the valve 52b (FIG. 6) in the supply / exhaust pipe 23 are opened to exhaust the air inside the door 21 and supply water, thereby increasing the weight of the door 9.

The air in the door inner space 21 is exhausted from the air supply / exhaust port 51 as shown by an arrow G in FIG. 6, and is supplied / exhausted via the air supply / exhaust pipe 23, the air supply / exhaust port 53b, the ventilation port 55b, and the ventilation pipe 43b. Return to device 39. In addition, the water sent from the water supply / drainage device 37 includes the water pipe 41 b, the water supply port 49 b, and the water supply / drainage port 47.
b, through the water supply / drainage pipe 25, as shown by an arrow H in FIG. The water level in the door inner space 21 rises, for example, from the water surface 27b shown in FIG. 4 to the water surface 27a shown in FIG.

By the exhaust and water supply of the air 21 in the door, the box 7
The valve 46b in the water supply / drainage pipe 25 and the valve 5 in the air supply / exhaust pipe 23 are obtained after the weight is obtained such that the door 9 does not float when stored in the pipe.
Close 2b. Then, the valve 59 of the fixing / damping device 13 is opened while maintaining the amount of water in the door inner space 21. In FIG. 4, the fixing / damping device 13 is in the state shown in FIG. 9, but when the valve 59 is opened and the liquid 63 inside the cylinder 73 is moved in the direction of arrow K as shown in FIG. The rod 19 descends in the direction of the arrow L, and the gate body 8 rotates downward. The fixing / damping device 13 damps the vibration of the door body 9 and sinks the gate body 8.

When the convex portion 14 of the door body 9 reaches the door stop portion 33a of the bottom surface 31 of the box body 7, the valve 5 of the fixing / damping device 13 is opened.
9 is closed, the rod 19 is fixed, the movement of the gate body 8 is stopped, and the state shown in FIG. 3 is obtained.

After the weight of the door body 9 is increased, the fixing / attenuating device 13 is used to stably store the gate body 8 in the box body 7 in a short time even when the water surface 5 has a wave or a flow. can do.

As described above, in the first embodiment, the door body 9 whose buoyancy is controlled by supplying / draining / supplying / exhausting air to / from the door inner space 21 is rotated in the vertical direction by using the fixing / damping device 13. Thus, the unstable vibration when the door 9 is opened and closed is damped, and the gate body 8 can be opened and closed stably in a short time. Further, by supporting the gate body 8 at two points, the door stop 33a and the rotary shaft 15 when opened and the door stop 33b and the rotary shaft 15 when closed, stability against waves, currents, winds, and earthquakes is achieved. Can be secured. When the gate body 8 is opened, the gate body 8 is stored inside the box body 7, so that it does not hinder the use of other sea areas such as navigation of a ship.

Further, in FIG. 1, the length 10 of the door 9 is
To extend the arm 11a, arm 11b, hinge structure 1
How to support by increasing the number of 7 or length 10
Are arranged relatively short door bodies 9, and each door body 9 is connected to an arm 11a,
By the method of supporting the arm 11b and the hinge structure 17,
Can handle long and large spans. By changing the length 10 and quantity of the door body 9, it can be applied to a long range of sea area.

Next, a second embodiment will be described. FIG. 10 is a perspective view of another gate body 8a, and FIG.
Shows a cross-sectional view of the gate body 8a. 11 is the same as FIG.
It is sectional drawing by MM of. In the second embodiment,
Instead of the gate body 8 of the tide gate 1, FIG.
The gate body 8a shown in 1 is used.

The gate body 8a includes a door body 9a and an arm 11.
a, arm 11b, etc. As shown in FIGS. 10 and 11, the door body 9a, like the door body 9, has an arcuate vertical cross section and has a door body space 21a therein. The arm 11a fixed near the upper edge portion 10 of the inner peripheral surface 4, the arm 11b fixed near the lower edge portion 12, and the door body 9a form a fan shape having the door body 9a as an arc portion. On the outer peripheral surface 6 of the door body 9a, a convex portion 14a is provided on an extension of the lower edge portion 12. The convex portion 14a is, for example, a rectangular plate-shaped member.

The gate main body 8a is connected to a box body having substantially the same shape as the box body 7 shown in FIGS. 3 and 4 by using a hinge structure 17. In the hinge structure 17, the rotating shaft 15 is provided as a central axis of the vertical rotation of the gate body 8a. Further, between the arm 11b and the box, a tide gate 1 is provided as a drive device for rotating the gate body 8a in the vertical direction.
Similarly, a telescopic fixing / damping device is attached.

The shape of the box for installing the gate body 8a is
It is almost the same as the case 7, but no water pipes or ventilation pipes are buried in the bottom surface, the wall surface, and the two door stop portions. Ventilation pipe 8
7 is fixed to the door body 9a in parallel with the arm 11a. The end of the ventilation pipe 87 is connected to the air supply / exhaust pipe 95 provided near the upper edge 10 of the door inner space 21a, and the air supply / exhaust port 91 is formed at the end of the air supply / exhaust pipe 95. The air supply / exhaust port 91, like the air supply / exhaust port 51 of the door 9, is used for air supply / exhaust to / from the door internal space 21a.

The water pipe 89 is fixed to the door 9a in parallel with the arm 11b. At the end of the water pipe 89, the inside of the door 21
The water supply / drainage pipe 97 is provided near the lower edge 12 of the a, and the water supply / drainage port 93 is formed at the end of the water supply / drainage pipe 97. The water supply / drainage port 93, like the water supply / drainage port 45 of the door 9,
It is used for water supply / drainage to the interior 21a of the door.

The ventilation pipe 87 and the water passage 89, which are provided in parallel with the arms 11a and 11b, use the swivel mechanism 83 provided on the rotary shaft 15 and are provided on the same straight line as the rotary shaft 15. It is connected to a pipe 85. Double pipe 85
Is connected to a water supply / exhaust device and a water supply / drainage device stored in the box.

In order to close the tide gate using the gate main body 8a, the air supply / exhaust device and the water supply / drainage device stored in the box are used to supply and drain the air 21a in the door body, and the door body 9a.
Adjust the buoyancy of a. Air is supplied from the air supply / exhaust device to the double pipe 8
5, through the swivel mechanism 83, the ventilation pipe 87, and the air supply / exhaust pipe 95 to the door inner space 21a. Water is the inside of the door 21a
From the water supply / drainage pipe 97, the water flow pipe 89, the swivel mechanism 83, and the double pipe 85 to the water supply / drainage device. Then, the valve of the fixing / damping device is opened, and the gate main body 8a is rotated by the rotary shaft 15
Rotate upward around. The valve of the fixing / damping device is closed when the convex portion 14 reaches the door stop portion fixed to the upper end of the wall surface of the box.

In order to open the tide gate using the gate body 8a, the air supply / exhaust device and the water supply / drainage device stored in the box are used to supply and drain the air 21a inside the door, and the door 9
Increase the weight of a. Air is supplied from the air 21a inside the door to the air supply / exhaust pipe 95, the ventilation pipe 87, the swivel mechanism 83, and the double pipe 8.
5 is sent to the air supply / exhaust device. Water is sent from the water supply / drainage device through the double pipe 85, the swivel mechanism 83, the water passage 89, and the water supply / drainage pipe 97 to the door inner space 21a. After that, the valve of the fixing / damping device is opened, and the gate body 8a is moved to the rotary shaft 5
Rotate downward around. When the convex portion 14 reaches the door stop portion fixed to the bottom surface of the box, the valve of the fixing / damping device is closed.

As described above, in the second embodiment, the double pipe 85 is installed on the same straight line as the rotary shaft 15, and the ventilation pipe 87 is used as the air supply / exhaust pipe 95 by using the swivel mechanism 83.
The water pipe 89 is connected to the water supply / drain pipe 97. This method has a feature that the door 9a is always connected to the air supply / exhaust device and the water supply / drainage device. The air supply / exhaust device and the water supply / drainage device are used to perform water supply / drainage / air supply / exhaust to / from the door inner space 21a, and the door 9a in which the amount of water in the door inner space 21a is controlled is vertically rotated using the fixing / attenuating device. Unstable vibration when the body 9a is opened and closed is damped, and the gate body 8a can be opened and closed stably in a short time.

Further, the gate body 8a having the convex portion 14
Like the gate main body 8 of the first embodiment, is supported by the box body at the two points of the door stop and the rotating shaft 15 at the time of opening / closing, so that it is resistant to waves, currents, winds, and earthquakes. , Stability can be secured. When the gate body 8a is opened, the gate body 8a is stored inside the box so that it does not hinder the use of other sea areas such as navigation of a ship.

Further, as with the door body 9 shown in FIG. 1, a method of extending the length of the door body 9a to increase the number of arms 11a, arms 11b, and hinge structures 17 or supporting them, or a relatively long length. A long span can be accommodated by arranging the short door bodies 9a and supporting each door body 9a by the arm 11a, the arm 11b, and the hinge structure 17. By changing the length and quantity of the door body 9a, it can be applied to a long range of sea area.

The technical scope of the present invention is not limited to the above embodiment. The ventilation pipes and water pipes are used for the air supply / exhaust device on the box side when the gate body is opened and closed.
Any structure may be used as long as it can connect the water supply / drainage device and the water supply / exhaust pipe / water supply / drain pipe provided in the door body. Further, the number of arms provided around the rotation axis does not have to be two. The waterproof rubber may be provided on the convex portion side of the door body in a shape capable of obtaining necessary waterproofness.

Further, since the tide gate of the present invention is a disaster prevention facility and is a structure which is stored under the sea floor in normal times,
It is expected that sand and mud will accumulate inside the box. Therefore, a plurality of depressions (not shown) are provided on the bottom of the box to use it as a mud trap. Sediment accumulated in the mud is regularly discharged outside the box by a vacuum pump, sand pump, etc.

[0065]

As described above in detail, the present invention has a structure applicable to a large span, and can ensure stability at the time of full opening, opening / closing operation, and full closing, and can open / close in a short time. Thus, it is possible to provide a tide gate and a method of constructing a tide gate that does not hinder the use of other sea areas in normal times.

[Brief description of drawings]

FIG. 1 is a perspective view of a tide gate 1.

FIG. 2 is a flowchart showing a method of constructing the tide gate 1.

FIG. 3 is a sectional view of the tide gate 1 when it is fully opened.

FIG. 4 is a sectional view of the tide gate 1 when it is fully closed.

5 is an enlarged cross-sectional view of the door stop portion 33a and the convex portion 14 in the state of FIG.

6 is an enlarged cross-sectional view of the door stop portion 33b and the convex portion 14 in the state of FIG.

FIG. 7 is a schematic sectional view of the fixing / damping device 13 in the state shown in FIG.

FIG. 8 is a schematic sectional view of the fixing / damping device 13 during expansion and contraction.

9 is a schematic cross-sectional view of the fixing / damping device 13 in the state shown in FIG.

FIG. 10 is a perspective view of another gate body 8a.

FIG. 11 is a sectional view of the gate body 8a.

[Explanation of symbols]

1 ...... tide gate 3 ...... ground 7 ………… Box 8: Gate body 9 ... Door body 11 ... Arm 13 ………… Fixed / attenuator 14 ......... Convex part 15 ... Rotation axis 17 ………… Hinge structure 21 ......... empty inside the door 23, 95 ... Supply and exhaust pipes 25, 97 ......... Water supply and drainage pipes 33a, 33b ......... door stop 37 ... Water supply / drainage device 39 ... Air supply / exhaust device 41a, 41b .... Water pipe 43a, 43b ... Vent pipe 45, 47, 93 ......... Water supply / drainage port 51, 53, 91 ... Supply / exhaust ports 83 ... Swivel mechanism 85 ... Double tube

Claims (9)

[Claims] 1. A box body and an inner space, in which air supply and water supply are possible,
A sea tide sluice comprising a door body rotatably provided in the box body, and a drive unit for rotating the door body. 2. The sea tide sluice according to claim 1, wherein the door has an arc-shaped cross section. 3. The tidal floodgate according to claim 1, wherein the door body has an air supply / exhaust pipe and a water supply / drainage pipe. 4. The sea tide sluice according to claim 1, wherein the door body is provided with a connecting member, and the connecting member is hinged to the box body. 5. The box body is further provided with an air supply device, a ventilation pipe connected to the air supply device, a water supply device, and a water passage pipe connected to the water supply device. Tide locks. 6. When the door reaches a predetermined position, ventilation between the ventilation pipe and the water supply / exhaust pipe or water passage between the water supply pipe and the water supply / discharge pipe can be performed. The sea tide sluice according to claim 5. 7. The door body is provided with a ventilation pipe and a water passage pipe,
The tidal floodgate according to claim 1, wherein ventilation and water flow are always performed. 8. A step (a) of manufacturing a door body having an inner space capable of supplying air and water, and a step (b) of rotatably installing the door body on a box body. And a step (c) of submerging the box on the bottom of the water, and a method for constructing a sea tide sluice. 9. The method of constructing a sea tide sluice according to claim 8, further comprising the step of providing an air supply device and a water supply device in the box.