JP3496144B2 - Tide gate - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tide gate installed on a shore or the like in order to prevent a disaster in which a region on the seashore is hit by a high tide and submerged in water.

[0002]

2. Description of the Related Art Conventionally, levees and concrete walls have been constructed for the purpose of protecting coastal areas from storm surge disasters. However, if the dike cannot be built due to the road, prepare a horizontal gate and use it by pulling it out when necessary, or if there is a river outflow, set up a gutter gate and usually raise the roller gate. The door of the slide gate is lowered when necessary to close the opening.

[0003]

In order to prevent a disaster caused by a high tide, it is basically necessary to construct a dike or a concrete wall, but it is necessary to raise the existing dike adjacent to the place where people live. When it becomes necessary, troublesome problems may occur. The reason for this is that the people who live in the area agree with the reason that the sunken ridge is bad due to the raised embankment, the living environment is deteriorated due to the obstruction of ventilation, the visibility is narrowed, and the scenery is bad. It is a situation that does not exist.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention seeks to provide a tide gate installed on the coast in such a case. In other words, in normal times, you lie flat
It secures sunlight and ventilation, preserves the landscape, and stands up to the required height in the event of high tide, preventing seawater from entering the land. In addition, a pillar that can control the standing angle is installed along the land side of the tide gate, and when the gate receives high tide water pressure, the pillar is tilted to the land side of the standing door body to prevent the collapse of the door body. It is configured to improve the certainty of the disaster prevention function of the tide gate.

The tide gate of the present invention, therefore, has the following features: a) A row of horizontal anchor bolts and bearings installed parallel to the top of the seawall on the vertical plane protruding from the upper edge of the seawall of the seawall. The pressing plate is crushed into a flat rectangle when air is discharged. The open side of the air bag made of rubber-lined cloth with three sides closed and one side open is pressed against the vertical plane to seal the open side. At the same time, fix the bladder to the sea-side upper edge of the seawall. b) The lower end of the door body made of steel plate having a dimension in the width direction slightly smaller than the weir width and a length necessary to secure a required standing height when standing up, in the bearing protruding above the bearing / holding plate. The bearing protruding in the direction is rotatably attached by the rotating shaft. c) On the other hand, one rubber plate is attached to the sea side of the bearing / holding plate and the sea side of the lower part of the steel plate door by bolts and holding plates, respectively, so that water leakage between the bearing / holding plate and the door body occurs. Prevent. d) In addition, the other end of a rubber-made cloth belt having sufficient strength with one end fixed with an anchor bolt and a holding plate installed at an appropriate position on the land side from the air bag on the top end surface of the seawall is made of steel plate. By fixing with bolts and a pressure plate at an appropriate position above the contact of the air bag on the land side of the door body, when the door body stands up to a predetermined posture, the door body stops due to the tension acting on this band To do so. e) With this configuration, if an air pipe is connected to the air bag from the land-based air operating device and compressed air is fed into the air bag from the air operating device, the air bag expands and the door body When the air bag is erected and air is exhausted from the air bag, the air bag is flattened and the door body falls down. f) In addition, a pillar having an appropriate length and compressive strength can be freely installed on a shaft parallel to the axis of rotation of the door supported by a bearing provided on the upper end of the land wall surface of the seawall, and at the same time the pillar is raised. By assembling a drive device that controls the angle, the pillars are normally set upright in the normal state, and when facing a high tide, it can be tilted to support the land-side head of the standing door. It is a feature.

In the above-mentioned tide gate, according to the present invention, instead of one row of horizontal horizontal anchor bolts installed parallel to the top of the seawall, a vertical protrusion of an anchor metal piece installed on the upper end of the seawall of the seawall On the surface, a row of horizontally oriented bolts and a bearing-holding plate that are installed horizontally and parallel to the top of the seawall are crushed into a flat rectangle when air is exhausted. It is also characterized in that the open side of the air bag made of rubber-lined cloth is pressed against the vertical plane to seal the open side and fix the air bag to the sea-side upper end of the seawall. It is a thing.

Also, in each of the above-mentioned tide gates, the present invention aims to enhance the bending rigidity of the door body in the height direction, by forming a thin steel plate on the sea-side surface of the door body in a posture perpendicular to the surface. It is also characterized by being attached by welding in a direction perpendicular to the rotation center of the.

The present invention provides the above-mentioned tide gates,
The tide gates with a small gate width (about 2 to 3 m) are arranged side by side in the extension direction of the rotation axis of the door body to make a tide gate with a large width (about 10 to 300 m). is there.

According to the present invention, in the above-mentioned tide gate, an odd number of tide gates having a small gate width are arranged side by side in the extension direction of the rotation axis of the door body. The rubber-lined cloth belt for stopping the door when standing up to a predetermined posture is omitted, and at the same time, the steel plate that projects from the land side surface to the adjacent gate in the entire length of the side end of the door is provided. Thus, when the odd-numbered tide gate is stopped in a predetermined standing posture by the tension acting on the rubber-coated cloth belt, the protruding steel plate overlaps the land side surface of the side end portion of the adjacent odd-numbered door body, It is also characterized in that even-numbered door bodies are stopped in a predetermined standing posture while preventing water leakage between both door bodies.

In the above-mentioned tide gates according to the present invention,
It is also characterized in that the air handling device includes an air tank having a sufficiently large volume so that the compressed air stored in the air tank is used when the tide gate is raised.

In the above-mentioned tide gates according to the present invention,
It is also characterized in that a roadbed that withstands the running of vehicles and the walking of people is attached to the sea-side surface of the steel plate door body.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a tide gate according to the present invention will be described below in detail with reference to the drawings. Figure 1,
2, FIG. 3, FIG. 4 and FIG. 5 show one embodiment of the present invention. FIG. 1 is a rear view of a standing body of a tide gate with a support supporting a back surface of the door body, and FIG. Sectional view of the body standing upright, with the back of the pillar supported, Figure 3 is a cross-sectional view of the door lying down and the pillar standing vertically, and Figure 4 is a bearing / holding plate, door body, and rotary shaft. It is an explanatory view of the assembled state of
FIG. 5 is an explanatory diagram of the shape of the air bag.

In FIGS. 1, 2 and 3, anchor bolts 2 are installed horizontally in a horizontal direction on a vertical plane 1 protruding from the upper end of the seawall of the seawall and parallel to the top of the seawall.
Presses the edge 5 of the open side of the air bladder 4 against the vertical plane 1 by the bearing / holding plate 3 so that the air bladder 4
The air bag 4 is fixed to the sea-side upper end of the seawall at the same time as the open side of the is closed.

At the end of the edge 5 of the open side of the air bag 4, there is a folded portion 7 of the reinforcing fiber which is protected by a resin rod 6 so that the bending radius of the reinforcing fiber is not too small. The lower end corner 8 of the dual-purpose holding plate 3 and the lower end corner 9 of the vertical surface 1 prevent the edge 5 of the open side of the air bag 4 from being pulled out by the tension acting on the air bag 4.

A bearing 1 protruding from the upper end of a bearing / holding plate 3
0 is combined with the rotating shaft 13 in the recess 12 at the lower end of the door body 11. At the same time, the bearing 14 protruding from the lower end of the door 11
Is combined with the rotary shaft 13 at the recess 15 at the upper end of the bearing / holding plate 3. Therefore, the door body 11 can freely move up and down while being supported by the fixed bearing / holding plate 3.

Further, one side of one rubber plate 16 is provided with a holding plate 17
By fixing the bearing / holding plate 3 to the upper part of the sea side of the bearing / holding plate 3 and fixing the other side to the lower part of the sea side of the door body 11 by the holding plate 19 and the bolt 20, the bearing / holding plate 3 and the door are fixed. Prevents water leakage between the bodies 11.

In addition, the anchor bolt 21 and the holding plate 2 installed at appropriate positions on the land side of the air bag 4 at the top of the seawall.
The other end of the rubber-lined cloth belt 24 having a sufficient strength, one end of which is fixed to the upper surface 23 of the concrete at 2, is bolted to a suitable position above the air bag 4 of the door 11 made of steel plate. When the door body 11 made of steel plate stands up to a predetermined posture, the door body 11 is stopped by the tension acting on the belt 24 by fixing the door body 11 to the predetermined posture.

At this time, at the end portion of the belt 24, there is a folded portion 28 of the reinforcing fiber which is protected by a resin rod 27 so that the bending radius of the reinforcing fiber is not too small, and the pressing plate 2 is provided.
The second corner 29 and the corner 30 of the holding plate 26 are prevented from being pulled out from a predetermined position by the tension applied to the belt 24.

As shown in FIG. 4, the bearing 10 protruding from the upper end of the bearing / holding plate 3 is engaged with the rotating shaft 13 in the recess 12 at the lower end of the door body 11, and at the same time, the bearing 14 protruding from the lower end of the door body 11 is formed. , The recess 1 at the upper end of the bearing / holding plate 3
5, the bearing / holding plate 3 and the door 11 are freely rotatable relative to each other by being combined with the rotary shaft 13. Further, the bearing / holding plate 3 is provided with a hole 31 matched with the anchor bolt 2 and a female screw 32 matched with the bolt 18 fixing one end of the rubber plate 16. Further, the door body 11 has a rubber plate 16
A female screw 33 that fits the bolt 20 that fixes the other end of the belt, a hole 34 that fits the bolt 25 that fixes one end of the band 24, a bent portion 35 at the upper end, and a hitting member 47 at the time of falling that also functions as a pillar guide. is there.

As shown in FIG. 5, the air bag 4, which is manufactured so as to be crushed into a flat rectangle when air is discharged, has a dimension in the width direction slightly smaller than the gate width and a door when inflated in the direction perpendicular to the width. It has a length necessary to push up the body 11. Then, the rubberized cloth is continuously folded back and closed on three sides other than the open side to be pressed by the bearing / holding plate 3. At the ends of the two rubber-coated cloths facing each other on the open side, there is a folded portion 7 of the reinforcing fiber, which is protected by a resin rod 6 so that the bending radius of the reinforcing fiber is not too small.

Further, a hole 36 through which the anchor bolt 2 penetrates in parallel with the folded-back portion 7 penetrates the edge 5 of the two rubber-coated cloth plates. A cap 37 is attached near the center of the rubberized cloth below the air bag 4.

With this structure, an air pipe 38 continuous with the mouthpiece 37 at the bottom of the air bag 4 is guided to a high place by burying it in a concrete of a seawall, and an exhaust opening / closing valve 39 of an air handling device 39. Exhaust flow control valve 40, Exhaust gas discharge unit 4
1, the air supply on-off valve 42, the air supply flow rate adjusting valve 43, the air tank 44, the check valve 45, and the air compressor 46 are connected as shown in FIGS. 1, 2 and 3. Then, in the air tank 44, normally, compressed air is produced by the air compressor 46 and sent through the check valve 45 to be stored.

Then, the exhaust on-off valve 39 is closed, the air supply on-off valve 42 is opened, and the air tank 44 is passed through the air supply flow rate control valve 43, the air supply on-off valve 42, and the air pipe 38. FIG. 2 is a cross-sectional view showing a state in which the air bag 4 is inflated and the door 11 is erected as a result of sending air into the air bag 4. The door body 11 stands up to a predetermined posture, tension is applied to the belt 24 to stop it, and the tip of the door body 11 reaches a predetermined height. FIG. 1 shows this state from the land side, and the air bag 4 is on the land side of the door body 11 and supports the door body 11 in almost the entire width.

Further, the air supply on-off valve 42 is closed, the exhaust on-off valve 39 is opened, and the air having the pressure inside the air bag 4 is supplied to the air pipe 38, the exhaust on-off valve 39, and the exhaust flow rate control valve. FIG. 3 is a cross-sectional view showing a state in which the door 11 is completely laid down as a result of being discharged into the atmosphere from the exhaust gas discharge portion 41 via 40. Since the hitting member 47 of the head of the door 11 is supported by the support 48 at the top of the seawall, a space is secured between the top of the seawall and the door 11, so that the air bladder 4 and the belt are secured. 24 is the door 11
Is not crushed by.

In addition, the door body 1 supported by bearings 49 mounted on a support base 48 provided at the upper end of the land side wall surface of the seawall.
1. The lower part of the column 51 having a proper length and sufficient compressive strength, which is undulating by an axis 50 parallel to the rotation axis 13 of 1,
A weight 52 and a contact portion 53 are provided. As shown in FIG. 3, the column 51 receives a moment to lean toward the land due to the weight 52, but since the contact portion 53 hits the vertical surface of the support base 48, the column 51 is kept in the vertical posture.

Now, the compressed air in the air tank 44 is pressed into the air bag 4 by opening the air supply on-off valve 42 to raise the door 11, and then the on-off valve 54 is closed and the on-off valve 55 is opened. Open the compressed air in the air tank 44 to the air tube 57 and the flexible tube 5.
As a result of being press-fitted into the air cylinder 59 through the piston rod 60, the piston rod 60 passes through the shaft 61 and the bearing 62, and the weight 52
As a result of pushing up the
FIG. 2 shows a state in which the tip 63 of the support column 51 is in contact with the side surface of 7.
Shown in. After this, when the door body 11 falls a little due to the water pressure of the high tide, the tip 63 of the support column 51 supports the door body 11 at the root of the bent portion 35, and prevents the standing height from significantly lowering.

As shown in FIGS. 2 and 3, the air cylinder 59 is attached to the bearing 65 on the land side wall surface of the seawall by the shaft 64, and supports the whole including the support column 51 and the weight 52. In the state of FIG. 2, the on-off valve 55 is closed and the on-off valve 54
And the air having the pressure inside the air cylinder 59 is discharged from the air discharge portion 67 into the atmosphere via the flexible tube 58, the air tube 57, the opening / closing valve 54, and the flow rate adjusting valve 66. Pushed into the air cylinder 59,
FIG. 3 shows a cross-sectional view of the state in which the door 11 is laid down after the pillars 51 have become vertical.

FIG. 6, FIG. 7 and FIG. 8 show another embodiment of the tide gate according to the present invention. FIG. 6 is a schematic rear view of the tide gate group showing the standing state, and FIG. In the standing posture, tension is generated, and the standing state is shown in a schematic cross-sectional view of the even-numbered tide gate without the rubber-made cloth belt that stops the erection movement of the door body. It is a schematic explanatory drawing of overlap. FIG. 6 is a rear view showing a state in which three tide gates each having a small width are arranged side by side as an example of a tide gate group composed of an odd number of tide gates, and the tide gate groups are standing upright. In FIG. 6, the odd-numbered tide gates (1st and 3rd) are the same as the tide gates shown in FIG. 1 to FIG. 5, and a belt 24 made of rubberized cloth is attached to the land side surface of the door body 101. There is.

However, the even tide gate (second)
On the land side surface of the door body 102 of FIG. Therefore, the door body 102 of the even-numbered tide gate
Cannot stand alone in a predetermined standing position.
This situation is shown in FIG. Therefore, the steel plate 10 protruding toward the door body 101 of the odd-numbered tide gate in the entire length of the land side surface of the side edge portion of the door body 102 of the even-numbered tide gate.
3 is provided. Now, the exhaust on-off valve 39 of the air control device installed at a high place is closed, the air supply on-off valve 42 is opened, and the air supply flow rate adjusting valve 43 from the air tank 44, the air supply on-off valve 42,
As a result of sending the compressed air into the air bag 4 via the air pipe 38 and the base 37, the air bag 4 expands and the door body 101,
FIG. 6 is a view of the state in which the members 102 make a standing motion together and stand up to a predetermined posture from the land side.

First, the door body 101 of the odd-numbered tide gate
Is stopped in a predetermined upright posture by the tension generated on the rubber-coated cloth belt 24 to which is attached. Next, the bearing portion 104 on the land side surface at the side end portion of the door body 101 is the door body 1 of the even-numbered tide gate where the standing motion is still to be continued.
The support 102 overlaps with the bearing portion 105 of the steel plate 103 protruding along the entire length of the side end portion of 02, and supports the door body while preventing water leakage between the door bodies, so that the door body 102 also stops in a predetermined standing posture. FIG. 8 is an explanatory view of the overlapping state of the pressure bearing portions 104 and 105. In this embodiment, a large number of tide gates having a small gate width are arranged side by side in the extension direction of the rotation axis of the door body to prevent water leakage between adjacent tide gates when a wide tide gate is constructed. As a means, it is possible to separate each by not connecting all the doors of both tide gates with a rubber plate, but by connecting the side ends of adjacent doors to each other. It was shown that. With this configuration,
It is possible to raise the door of each tide gate of the tide gate group independently by human power or by a temporary crane,
Even in an emergency situation where the air handling device cannot stand up the tide gate due to damage to the air bag or insufficient pressure in the air tank, it is possible to take emergency measures to raise the door to ensure the function of the tide gate. .

[0031]

In the tide gate according to the present invention, the bearing / holding plate 3 is provided at the top end of the sea-side wall of the seawall, and (a) the air bag is sealed and fixed, and (b) the door body is freely undulated. Fixed, (c)
Since it is a main component that achieves the three important functions of fixing the lower watertight rubber, it was possible to make an inexpensive gate with a simple structure and a small number of components. Further, since the door body supported almost continuously in the width direction by the air bag is a steel plate door body having a low workability, this is also a factor that makes the gate very inexpensive.

In addition, by providing the air manipulator with an air tank having a sufficiently large volume and maintaining the air pressure normally required, it is possible to raise the tide gate without operating the air compressor. Therefore, A) The tide gate stands up even when there is a power outage, such as during a typhoon. B) Allowing longer operating times of the air compressor,
The drive motor is small and the maintenance cost is low. C) It is possible to shorten the standing operation time. I was able to realize the advantage. Further, in the tide gate of the present invention, after the door is erected, the drive device tilts the undulating support that is normally in the form of a vertical fence on the land side edge of the tide embankment. Support posture. As a result, the standing height of the door body is not significantly lowered even when the water pressure of high tide is received. Also, when a large number of tide gates with a small gate width are installed side by side in the extension direction of the axis of rotation of the door body to form a wide tide gate, the side edges of the door body should be connected without connecting adjacent tide gates to each other. By adopting a structure that prevents leakage of water between each other by overlapping the steel plates protruding from the adjacent doors, it is possible to raise the doors of each tide gate separately by human power or by a temporary crane. However, even if the air operation device, that is, the rising operation of the tide gate due to compressed air becomes impossible due to damage to the air bag or insufficient pressure in the air tank, the function of the tide gate can be ensured. There is a tide gate with excellent safety. As described above, the tide gate of the present invention is excellent in economic efficiency and is excellent in the performance as a disaster prevention gate. Therefore, providing it can bring great social benefits.

[Brief description of drawings]

FIG. 1 is a rear view showing an embodiment of a tide gate according to the present invention, in a state in which a support column supports a back surface of a door body of a standing tide gate.

FIG. 2 is a cross-sectional view of a state in which a door is erected and a back of the door is supported by a column.

FIG. 3 is a cross-sectional view of a state in which the door body is lying down and the support columns are standing vertically.

FIG. 4 is an explanatory diagram of an assembled state of a bearing-holding plate, a rotating shaft, and a door body.

FIG. 5 is an explanatory diagram of a shape of an air bag.

FIG. 6 is a rear view showing another embodiment of the tide gate according to the present invention, in a state where the tide gate group stands upright.

FIG. 7 is a schematic cross-sectional view of an even-numbered tide gate in which a strip made of rubberized cloth is omitted, showing a standing state.

FIG. 8 is a schematic explanatory view of overlapping doors of adjacent tide gates.

[Explanation of symbols]

1 vertical plane 2 Anchor bolt 3 Bearing plate that also serves as a bearing 4 air bags 5 edges 6 rod 7 Folding part 8 and 9 corners 10 bearings 11 door body 12 recess 13 rotation axis 14 bearings 15 recess 16 rubber plate 17 Presser plate 18 volt 19 Presser plate 20 volts 21 anchor bolt 22 Presser plate 23 Top 24 obi 25 volts 26 Presser plate 27 rod 28 Folding part 29,30 square 31 holes 32, 33 female thread 34 holes 35 Supporting material 36 holes 37 mouthpiece 38 air tube 39 Exhaust on-off valve 40 Exhaust flow control valve 41 Exhaust emission part 42 Open / close valve for air supply 43 Flow control valve for air supply 44 air tank 45 check valve 46 air compressor 47 hit materials 48 support 49 bearings 50 axes 51 props 52 Weight 53 Hit part 54,55 open / close valve 56 Flow control valve 57 air tube 58 Flexible tube 59 Air cylinder 60 piston rod 61 axis 62 bearing 63 tip 64 axes 65 bearing 66 Flow control valve 67 Air release unit 101,102 door 103 Protruding steel plate 104, 105 bearing section

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-2000-355924 (JP, A) U.S. Patent Publication 57-58271 (JP, Y2) US Patent 5713699 (US, A) US Patent 4780024 (US, A) US Patent 5538360 (US, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02B 7/20 E02B ^7/ 40-7/44

Claims (7)

(57) [Claims] 1. A) A horizontal row of anchor bolts installed horizontally parallel to the top of the seawall and a bearing / holding plate are arranged on the vertical plane protruding from the upper end of the seawall surface of the seawall. When it is discharged, it collapses into a flat rectangle. The open side of an air bag made of rubber-lined cloth with three closed sides and one open side is pressed against the above vertical plane to seal the open side and seal the air bag against the seawall. Secure it to the upper edge of the sea side. b) The lower end of the door body made of steel plate having a dimension in the width direction slightly smaller than the weir width and a length necessary to secure a required standing height when standing up, in the bearing protruding above the bearing / holding plate. The bearing protruding in the direction is rotatably attached by the rotating shaft. c) On the other hand, one rubber plate is attached to the sea side surface of the bearing / holding plate and the sea side surface of the lower part of the steel plate door body by bolts and holding plates, respectively. Prevent water leakage between the bodies. d) On the other hand, the other end of a belt made of rubberized cloth having sufficient strength with one end fixed with an anchor bolt and a holding plate installed at an appropriate position on the land side from the air bag on the top end surface of the seawall is made of steel plate. By fixing with bolts and a pressure plate at an appropriate position above the contact of the air bag on the land side of the door body, the door body stops due to the tension acting on this band when the door body stands up to a predetermined posture. To do so. e) With this configuration, if an air pipe is connected to the air bag from the land-based air operating device and compressed air is fed into the air bag from the air operating device, the air bag expands and the door body When the air bag is erected and air is exhausted from the air bag, the air bag is flattened and the door body falls down. f) In addition, a pillar having an appropriate length and compressive strength can be freely installed on a shaft parallel to the axis of rotation of the door supported by a bearing provided on the upper end of the land wall surface of the seawall, and at the same time the pillar is raised. By assembling a drive device that controls the angle, the pillars are normally set upright in the normal state, and when facing a high tide, it can be tilted to support the land-side head of the standing door. A characteristic tide gate. 2. The tide gate according to claim 1, wherein a protrusion of an anchor metal piece installed on the upper end of the sea wall of the seawall is used in place of a row of horizontal horizontal anchor bolts installed parallel to the top of the seawall. In the vertical plane, a row of horizontal horizontal bolts and a bearing / holding plate, which are provided in parallel with the top of the seawall and which are screwed into a female screw, are crushed into a flat rectangle when air is discharged. One feature is that the air bag is fixed to the sea-side upper end of the seawall by sealing the open side by pressing the open side of the air bag made of rubberized cloth with one open side against the vertical plane. The tide gate. 3. The tide gate according to claim 1, wherein, for the purpose of strengthening the bending rigidity of the door in the height direction, an elongated steel plate is placed on the sea-side surface of the door in a posture perpendicular to the surface. A tide gate characterized by being welded in a direction perpendicular to the center of rotation of the door. 4. The tide gate according to any one of claims 1 to 3, wherein the tide gates having a small gate width (about 2 to 3 m) are arranged side by side in the extension direction of the rotation axis of the door body to have a large width. (Approximately 10 to 300 m) A tide gate that is a tide gate. 5. The tide gate of claim 4, wherein an odd number of tide gates having a small gate width are installed side by side in the extension direction of the rotation axis of the door body, and in the even tide gate, the door body is The rubber-lined cloth belt for stopping the door when standing up to a predetermined posture is omitted, and at the same time, the steel plate that projects from the land side surface to the adjacent gate in the entire length of the side end of the door is provided. Thus, when the odd-numbered tide gate is stopped in a predetermined standing posture by the tension acting on the rubber-coated cloth belt, the protruding steel plate overlaps the land side surface of the side end portion of the adjacent odd-numbered door body, A tide gate characterized in that even number doors are stopped in a predetermined standing posture while preventing water leakage between both doors. 6. The tide gate according to any one of claims 1 to 5, wherein the air manipulating device includes an air tank having a sufficiently large volume so that when the tide gate is erected, compressed air stored in the air tank is stored. A sea tide gate characterized by being used. 7. The sea tide gate according to any one of claims 1 to 6, characterized in that a roadbed which is resistant to running of a vehicle or walking of a person is attached to a sea-side surface of a steel plate door body. .