JP2016138367A - Land lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a land lock of a simple structure that is capable of being closed automatically by a tide gate, the tide gate serving as a stairway at normal times, and the land lock being installable at a narrow topographical location with elevation difference right by the sea, and closing the tide gate for certain at a time of tsunami.SOLUTION: A land lock installed on a seaside dike or a river dike and having an opening cut through the dike includes a wing part on both sides of the opening, a horizontal shaft having both edges fixed rotatably on the wing part at a bottom edge of the opening, and a floating tide gate of a watertight box body structure that opens/closes the opening by rotating around the horizontal shaft from diagonally lower side to a diagonally upper side in a direction toward the sea. The tide gate has a stairway of a box structure on a top surface, enabling a pedestrian to walk on the stairway when the tide gate is open.SELECTED DRAWING: Figure 1

Description

  The present invention is a land anchor provided on a coastal embankment or river embankment, which can be used as a staircase that descends to a harbor quay, a floating pier, or a sandy beach during normal times, and when storm surge or tsunami occurs, As a land anchor to prevent the intrusion of water, it relates to a land anchor that can be automatically closed using the rise in sea level.

  Conventionally, dikes such as beaches and rivers have been interrupted so that they can pass through for normal life, and when the water increases, they are blocked by gates, etc. ing.

  The sea level rises due to storm surges caused by typhoons and tsunamis caused by earthquakes, and the opening must be closed to prevent the intrusion of the rising sea water from the land opening of the coastal embankment. When it is necessary to perform a closing work manually due to a power failure or the like, and when a storm surge or a tsunami has already entered, there is a problem that the person who performs the closing work is exposed to danger.

  Therefore, there has been research on automatically closing the land with a tide door without relying on electric power etc., for example, the tide door can be forcedly opened and closed by hydraulic pressure and the buoyancy of the air stored in the tide door The prior art of the land ridge which uses a to close the tide door automatically at high tide is disclosed (Reference 1).

JP 2006-257829 A

  In the prior art of Patent Document 1, it is disclosed that the tide is automatically closed by the tide door using the buoyancy of the tide door, but the tide door is normally used as a flat passage. Therefore, when the height of the shore embankment is high and the distance from the embankment to the seaside is short, it is necessary to separately provide a stairway that descends downward, and the prior art has a problem that is difficult to apply.

  In addition, when a tsunami occurs, there is a problem that it is unclear whether the tide door can be reliably operated and closed against the seawater with high wave heights.

  The present invention solves these problems, has a simple structure, and can automatically close a land ridge with a tide door, and the tide door serves as a staircase during normal times, and the outside of the coastal dike. However, there is a land ridge that can be installed even in narrow terrain, such as the sea, with a difference in elevation, and that can reliably close the tide doors when a tsunami occurs.

  A landfill according to claim 1 of the present invention is installed in a coastal dike or a river dike, and in a landfill provided with an opening portion interrupted in the dike, a wing portion on both sides of the opening portion, A horizontal shaft fixed at both ends at the lower end to be pivotable to the wing portion, and with the horizontal shaft portion as one end, it can be pivoted from diagonally downward to diagonally upward in the sea side direction to open and close the opening. A floating tide door with a watertight box structure, and the tide door is provided with a box structure stairs on the upper surface, and when the tide door is opened, the stairs can be passed by pedestrians. It is characterized by that.

By adopting this configuration, the land anchor according to claim 1 is a land anchor provided on a coastal embankment or the like, the opening is located at a position higher than the sea surface, and a wing part on both sides of the opening, A horizontal shaft with both sides fixed to the wing portion at the lower end of the opening, and one end pivoting from diagonally downward to diagonally upward with the horizontal axis as the central axis to open the opening -At least a floating tide door with a closed box structure. In the land anchor according to the present invention, the tide door is open obliquely below the sea side (front), and the top surface of the tide door is a staircase, so that people use the tide door, You can go down to the sea. Therefore, the land ridge according to the present invention is installed even on terrain where the sea and mountains such as fishing ports of narrow terrain where there is a difference in elevation, such as the sea immediately from the coastal embankment, close to the sea, especially on the rias coast. Can be used.

In addition, the tide door has a hollow watertight structure and has buoyancy due to the air contained in the tide door, and when the storm surge occurs or a small tsunami occurs, the sea level rises. The tide door can be lifted only by buoyancy, and can turn to automatically close the land anchor. Therefore, since it is not necessary for a person to go to the tide door to close the land anchor, the tide door can be safely closed even when a storm surge or tsunami occurs. In addition, the wing part is provided on both sides of the movable part of the tide door, and the water-tightness of the land anchor is maintained by the waterproof structure by the waterproof rubber between the movable part and the wing part.

A land anchor according to claim 2 is the land anchor according to claim 1, wherein an impact mitigating member for assisting buoyancy of foamed plastic, rubber floats, etc. at the other end opposite to the horizontal shaft portion of the tide door. A buoyancy component is provided.

By adopting this configuration, the land anchor according to claim 2 is provided with an impact mitigating member and a buoyancy component such as foam plastic and rubber float at the tip of the other side (sea side) of the tide door. Yes. As a result, in normal times, when the sea is directly under the shore, there is an impact buffer and buoyancy component at the tip of the tide door that faces diagonally downward. In addition, the impact buffering member / buoyancy component is a foamed plastic or rubber floating bag, and therefore has a strong buoyancy. Therefore, the land anchor of the present application can keep the tip of the tide door drifting in the waves and the top surface of the tide door is a staircase, so that a person can get on the ship as it is.

A land anchor according to a third aspect is the land anchor according to the second aspect, characterized in that a connecting plate for entering the floating pier is provided at the other end of the tide door.

  By adopting this configuration, the land lock gate according to claim 3 can be directly and safely boarded and exited from the stairs on the top surface of the tide door directly on the floating pier provided in the port. And by using a floating pier, it becomes possible to get on and off a larger ship.

The land anchor according to claim 4 is the land anchor according to claim 2, characterized in that a wave removing portion is provided at the other end of the tide door.

  By adopting this configuration, even if a large-scale tsunami hits, the tide door is not swallowed by the tsunami by passing the power of the tsunami by the wave breaker provided at the tip of the tide door. Can be closed.

  According to the land anchors according to claims 1 to 5 of the present invention, even if a storm surge or a tsunami occurs, the tide doors of the land anchors are automatically closed, so that seawater enters the urban area on land. Can be prevented. In addition, no power source such as a power source or human power is required, and it is not necessary for a person to go to close the gate even during a power failure.

  In addition, since the upper surface of the tide door is a staircase, the land anchor of the present invention can be applied to a coastal embankment with a difference in elevation, particularly a narrow terrain fishing port where the mountain and the sea are close to each other. it can.

1 is a schematic overall perspective view of a land anchor according to an embodiment for carrying out the present invention, showing a state in which a tip portion of an open tide door is drifting on the sea surface. FIG. 2 is a schematic general perspective view of a land anchor according to an embodiment for carrying out the present invention, showing a state in which a tip portion of an open tide door is placed on a sand beach. FIG. 2 is a schematic general perspective view showing a state where the tide door closes the ridge with seawater in a high tide state, which is a land ridge according to an embodiment for carrying out the present invention. FIG. 2 is a schematic cross-sectional view of a tide door that is a land anchor according to an embodiment for carrying out the present invention and is open. FIG. 1 is a schematic view of a land of a land according to an embodiment for carrying out the present invention, showing a state in which a connection plate is provided at the tip of an open tide door and connected to a floating pier. FIG. 1 is a schematic general perspective view of a land ridge according to a form for carrying out the present invention, showing a state in which a tide door having a wave breaker at its tip is placed on a sand beach and opened. .

  As shown in FIGS. 1, 2, and 3, a land anchor 1 according to the present invention is a land anchor 1 provided in an opening of a coastal dike 10, provided on both sides of the opening, A pair of wing portions 4 having stoppers 5 that support the other end side (sea side) of the tide door 2 when the tide door 2 is closed on the side and stop the rotation, and a lower portion (floor surface) of the opening portion The horizontal shaft 3 is supported at both ends by the wing portion at the position, and the one end side (land opening portion side) is turned up and down with the horizontal shaft 3 as the central axis, and the upper surface has a stepped portion 2-1 And a tide door 2 having a hollow watertight structure. As shown in FIG. 1 and FIG. 2, the land anchor 1 normally opens the tide door 2 and floats the end portion of the tide door 2 on the sea surface 20-1, or It is placed on land such as sandy beach 30. In addition, as shown in FIG. 3, when a storm surge or a tsunami occurs, the land ridge 1 rotates the tide door 2 upward with the horizontal axis 3 as the central axis only by buoyancy, so that seawater is generated on the land side. Close to prevent entry.

  As shown in FIG. 4, the tide door 2 is a water-tight box structure having a substantially rectangular parallelepiped shape that allows a horizontal axis 3 to pass through at one end, and the inside is hollow and contains air. Yes. Therefore, when the tide door 2 is immersed in seawater, it floats on the seawater surface 20 due to its buoyancy. Therefore, as the seawater surface 20-1 rises and falls due to waves, storm surges, tsunamis, etc., the tide door 2 The other end 2-7 also moves up and down following the seawater surface 20-1. As a result, the tide door 2 rotates up and down around the horizontal axis. The tide door 2 is placed obliquely downward toward the other end 2-7 in normal times. On the upper surface 2-2 of the tide door 2, a staircase 2-1 is provided, and during normal times, a person can descend toward the sea 20 from the coastal dike 10 provided at a high place. Therefore, the land anchor 1 can be installed in a place where the land anchor 1 is provided at a position higher than the sea level and the sea 20 is immediately in front of you. Since the staircase portion 2-1 is not only the tread and the kick-up but also the wife portion is closed and sealed, each step of the staircase 2-1 becomes an independent hollow air chamber, which helps the tide door 2 buoyancy. Working. In addition, the magnitude | size of the tide door 2 is width 1-4m, length 1-5m, and thickness 20-50cm. Further, the upper surface 2-2 and the lower surface 2-3 of the tide door 2 are not parallel but slightly spread from the horizontal shaft 3 toward the other end side, and the buoyancy on the other end side of the tide door 2 is increased and smooth. Can be closed. In addition, the stairs part 2-1 of the tide door 2 is below the width | variety of the tide door 2, and when the upper surface 2-2 of both sides of the stairs part 2-1 or the stairs part 2-1 is hooked on the stopper 5, the tide part The rotation of the door 2 is stopped. The tide door 2 is preferably a thin steel plate or aluminum alloy thin plate in terms of buoyancy.

  The horizontal axis 3 is a central axis for rotating the tide door 2 and supports one end side of the tide door 2. The other end of the tide door 2 is placed on land such as a sandy beach 30 in normal times and placed directly on the sea 20 and is balanced by the buoyancy of the tide door 2 and drifts between waves like a floating pier. There is a case. When a high wave occurs due to a storm surge or tsunami, the tide door 2 rotates upward as the sea level 20 rises, and is rotated upward by the horizontal shaft 3 and the stopper 5 provided on the inner surface of the wing part 4. Movement is restrained and supported. Therefore, since the horizontal shaft 3 needs to support the tide door 2, it is preferable to use a steel pipe having a diameter of about 50 to 300 mm.

  As shown in FIGS. 1, 2, 3, 5, and 6, the wing portions 4 are provided on both sides of the opening of the land anchor 1, and when the tide door 2 is closed, the tide door 2 and the coast It plays a role in preventing seawater from entering the levee 10. The wing part 4 is the same length as the tide door 2 from the position where the sea side end of the tide door 2 is at least the same height as the horizontal axis 3 to the same height as the coastal dike 10. It projects in the direction of the sea 20. In addition, a stopper 5 is provided on the inner side surface of each wing portion 4, and this stopper 5 has an upper surface 2-2 (step portion 2-1) on the other end side of the tide door 2 when a storm surge or a tsunami occurs. ) (Including) is stopped and supported. In addition, the water stop rubber | gum 2-8 is provided in the side surface of the tide door 2, and the opening part lower part of the land anchor 1, and the rotation axis periphery of the tide door 2 and the contact part with the wing part 4, respectively. The water contact area is stopped.

  As shown in FIGS. 1 and 4, the impact relaxation member / buoyancy component 6 is made of a foamable plastic or rubber floating bag, and the other end 2-7 side of the tide door 2 is floated in the sea. In some cases, when boarding a small boat such as a fishing boat directly from the staircase portion 2-1 of the tide door 2, the boat and the tide door 2 are in contact with each other so as not to be damaged. When a storm surge or a tsunami occurs, buoyancy is applied to the other end 2-7 side of the tide door 2 to assist the operation of closing the tide door 2.

  As shown in FIG. 5, the floating pier connecting plate 7 has a floating pier and the stairs 2-1 of the tide door 2 when the other end 2-7 side of the tide door 2 is drifted to the sea surface 20-1. 11 is connected, so that a person can safely get on the pier 11 from the stairs 2-1 during normal times. Moreover, the floating pier 7 is supported by the staircase portion 2-1 with a hinge, and the floating pier 11 side is a free end. When the storm surge or tsunami occurs, the floating pier 7 is narrower than the width of the staircase portion 2-1 of the tide door 2, and the edge of the floating pier is cut off. , Does not prevent the closing of the tide door 2.

  As shown in FIG. 6, the wave removal portion 8 has an arc upwardly toward the tip, and the bottom and tip are shaped like the tip of a ship. When a large-scale tsunami strikes, The force of the tsunami does not go to the lower side or the side of the tide door 2, and a large tsunami is prevented from directly hitting the upper surface 2-2 of the tide door 2. Therefore, even if a tsunami strikes, the land anchor 1 according to the present invention can close the tide door 2 with certainty because a large wave force is not directly applied to the tide door 2. Therefore, the tsunami damage can be prevented by providing the wave removal unit 8 in an area where a large-scale tsunami attack is predicted. In addition, step 8-1 in the upper part of the wave removal part 8 is hollow like the tide door 2, and the air is sealed. Therefore, when a storm surge or tsunami occurs, buoyancy is also generated from the wave removal unit 8 to assist in closing the tide door 2. Moreover, since the wave removal part 8 is a little narrower than the tide door 2, since it does not interfere with the wing part 4, it does not prevent the tide door 2 from being closed. Further, a staircase may be provided at the tip so that the ship can be directly boarded from the tip of the wave removal portion 8.

  An example of how to use the land anchor 1 according to the present invention will be described. As shown in FIG. 1, the land anchor 1 according to the present invention has a height difference from the coastal dike 10 and can be installed directly in a place that is the sea. The tide door 2 of the land 1 is provided at the lower end of the opening of the land 1 and is supported by the horizontal shaft 3 having both ends fixed to the wings 4, and the other end 2-7 side ( The sea side) can float on the sea surface 20-1, drifting in the waves. Therefore, in normal times, a person gets off the staircase portion 2-1 provided on the upper surface 2-2 of the tide door 2 from the opening of the shore 1 higher than the sea level 20-1, and directly enters the ship. You can also. At this time, since the impact relaxation member / buoyancy component 6 is provided on the other end side of the tide door 2, the ship and the tide door 2 are not damaged.

  As shown in FIG. 3, when the sea level 20-1 rises when a storm surge or tsunami occurs, the buoyancy (impact mitigation member / buoyancy component 6 is provided) of the tide door 2 main body and the staircase 2-1. In some cases, the tide door 2 rises as the sea level 20-1 rises due to the buoyancy of the impact relaxation member / buoyancy component 6). And the tide door 2 is the upper part of the tide door 2 in the position where the other end side of the tide door 2 becomes the same height as the top edge of the coastal dike 10 by the stopper 5 provided in the inner surface of both wing parts 4. While the rotation is restrained, the other end of the tide door 2 is supported by the two points of the stopper 5 and the horizontal shaft 3 on the opposite side, so that it can counter the wave force. Therefore, since the land anchor 1 according to the present invention does not require any electricity or human power as power, the land anchor can be safely and reliably closed even during a power failure. In addition, since the width | variety of the staircase part 2-1 is below the width | variety of the tide door 2, when closing the tide door 2, since it does not interfere with the wing part 4, closure is not prevented.

  An example of another method of using the land anchor 1 according to the present invention will be described. As shown in FIG. 2, the land anchor 1 according to the present invention can be installed from a coastal dike 10 in a narrow place where there is a height difference. When the other end side of the tide door 2 is the beach 30 such as a sandy beach, the other end side of the tide door 2 can be placed on the beach 30 as it is. Therefore, in normal times, the pedestrian can get off the stairs 2-1 and go to the beach 30 safely and easily. In addition, when a storm surge or tsunami occurs, the opening of the land anchor 1 can be safely and reliably closed as described above. It should be noted that there is no problem even if the impact relaxation member / buoyancy component 6 such as foam plastic or rubber float is provided or the other end is placed on the beach.

  Moreover, an example of another usage method of the land anchor 1 which concerns on this invention is demonstrated. As shown in FIG. 5, a floating jetty 11 can be installed at the tip of the other side of the tide door 2. If the floating pier 11 is installed, it is easy to get on and off the ship, and it is possible to get on and off the ship at a position far from the land, so that the sea becomes deeper and you can get on and off the big ship. By providing the floating pier connection plate 7, a person can safely move from the tide door 2 to the floating pier 11. The floating pier connection plate 7 is supported by the staircase portion 2-1 of the tide door 2 with a hinge and supported by the floating pier 11 at a free end. Therefore, when the tide door 2 is closed, the floating pier connection plate 7 is disconnected from the floating pier 11, and the width of the floating pier connection plate 7 is shorter than the width of the staircase portion. Is shorter than the tide door 2 and is about 2 m at the longest, so it does not prevent the tide door 2 from closing. The floating pier connection plate 7 is preferably a thin steel plate, and it is preferable to use a striped steel plate with a non-slip.

  Moreover, an example of another usage method of the land anchor 1 which concerns on this invention is demonstrated. As shown in FIG. 6, a wave removal unit 8 can be provided in an area where a large-scale tsunami may occur. A large-scale tsunami wave is sent to the lower side or the side of the tide door 2 by the wave removal unit 8, so that the wave does not directly hit the tide door 2, so that the closing of the tide door 2 is not hindered. The shape of the wave removing portion 8 is preferably a shape like a ship's tip, but the shape is not particularly limited as long as it is a shape that can pass waves. Further, a wave removal step 8-1 is provided on the upper surface of the wave removal portion 8, and the inside is hollow and the air is sealed, so that buoyancy is generated and a person can get on the beach 30 so that the beach 30 can be reached. It has become. Note that a staircase is provided at the tip of the wave removal portion 8 so that a boat can be boarded.

  It can be widely used as a coastal embankment or river embankment.

1: Land 2: Tide door
2-1: Stair part 2-2: Tide door upper surface 2-3: Tide door lower surface 2-4: Tide door air chamber 2-5: Stair part air chamber 2-6: Horizontal shaft 2-7: Other end 2-8: Still water rubber 3: Horizontal shaft 4: Wing part
5: Stopper
6: Impact mitigation member and buoyancy component 7: Floating pier connection plate
8: Wave breaker 8-1: Wave breaker Step 10: Coastal dike 11: Floating pier 20: Sea 20-1: Sea surface 30: Beach

Riku閘according to claim 1 of the present invention is installed in coastal dikes or river embankment, a Riku閘provided with opening gaps in該堤proof, and wing portions on both sides of the opening, the opening A horizontal shaft fixed at both ends at the lower end of the portion so as to be pivotable to the wing portion, and the horizontal shaft portion as one end so that it can be pivoted from diagonally downward to diagonally upward in the sea side direction to open the opening. In a land ridge with a watertight box structure that closes and a floating tide door, the tide door has a box-like stairs on the top surface, and when the tide door is opened, a pedestrian can walk the stairs. It is constructed so that it can pass through , and the other end portion of the tide door is provided with an impact mitigating member such as foamed plastic or rubber floating bag .

In addition, the tide door has a hollow watertight structure and has buoyancy due to the air contained in the tide door, and when the storm surge occurs or a small tsunami occurs, the sea level rises. The tide door can be lifted only by buoyancy, and can turn to automatically close the land anchor. Therefore, since it is not necessary for a person to go to the tide door to close the land anchor, the tide door can be safely closed even when a storm surge or tsunami occurs .

In addition, wings are provided on both sides of the movable part of the tide door, and the watertightness of the land ridge is maintained by a waterproof structure using a waterproof rubber between the movable part and the wing part.

Riku閘according to the present invention includes a tip portion of the other end of the tide door (sea side) foamed plastic, a rubber shock absorbing member such as a bladder. Thus, during normal, in the case immediately below the Riku閘is sea, since the tip portion of the oblique downward tide door there is a shock absorbing member can be directly berthing a boat fishing boat such as tide door shock-absorbing member with has a strong buoyancy because it is foamed plastic, rubber bladder. Therefore, the land anchor of the present application can keep the tip of the tide door drifting in the waves and the top surface of the tide door is a staircase, so that a person can get on the ship as it is.

A land anchor according to a second aspect is the land anchor according to the first aspect, characterized in that a connecting plate for entering the floating pier is provided at the other end of the tide door.

By adopting this configuration, the land lock gate according to claim 2 can be safely and directly on and off the floating pier provided at the port from the stairs on the top surface of the tide door. And by using a floating pier, it becomes possible to get on and off a larger ship.

The land anchor according to claim 3 is the land anchor according to claim 2, characterized in that a wave removing portion is provided at the other end of the tide door.

According to the land anchors according to claims 1 to 3 of the present invention, even if a storm surge or a tsunami occurs, the tide doors of the land anchors are automatically closed, so that seawater enters the urban area on land. Can be prevented. In addition, no power source such as a power source or human power is required, and it is not necessary for a person to go to close the gate even during a power failure.

An example of another method of using the land anchor 1 according to the present invention will be described. As shown in FIG. 2, the land anchor 1 according to the present invention can be installed from a coastal dike 10 in a narrow place where there is a height difference. When the other end side of the tide door 2 is the beach 30 such as a sandy beach, the other end side of the tide door 2 can be placed on the beach 30 as it is. Therefore, in normal times, the pedestrian can get off the stairs 2-1 and go to the beach 30 safely and easily. In addition, when a storm surge or tsunami occurs, the opening of the land anchor 1 can be safely and reliably closed as described above. Even though providing the shock absorbing member and the buoyancy structure material 6, such as foamed plastic or rubber bladder, the other end there is no problem even if placed on a beach.

Claims (4)

On land ridges that are installed on coastal dikes and river dikes, and have openings in the dike,
Wings on both sides of the opening,
A horizontal shaft fixed at both ends at the lower end of the opening so as to be rotatable to the wing portion, and the horizontal shaft portion as one end so that the opening can be rotated from obliquely downward to obliquely upward in the sea side direction. A floating tide door with a watertight box structure that opens and closes,
The land ridge characterized in that the tide door has a box-shaped staircase on the upper surface, and is configured such that a pedestrian can pass through the stairs when the tide door is opened.   The land anchor according to claim 1, further comprising an impact mitigating member and a buoyancy component such as foam plastic and a rubber float at the other end of the tide door.   The land anchor according to claim 2, further comprising a connection plate for entering the floating pier at the other end of the tide door.   The land anchor according to claim 2, further comprising a wave removing portion at the other end of the tide door.

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