JP5684742B2 - Self-sinking device for floating body protection - Google Patents

Description

  In the present invention, when the tide level rises abnormally due to the occurrence of a large tsunami or the like, seawater is introduced into the inside by the rise of the tide level to cause self-sink, and after the tide level is stabilized, air is supplied to the inside to rise. The present invention relates to a self-sinking device for protecting a floating body.

  If a huge earthquake occurs at the bottom of the sea, a large tsunami may occur on the coast. Due to this large tsunami, there is a risk that a ship or the like moored in the harbor will be carried to the land or pulled back to the sea by a pulling wave. The same applies to floating bodies such as floating piers that are moored in the harbor.Pile mooring floating piers rise along mooring piles as the tide level rises, but in the case of large tsunamis, etc. The action point of the force acting on the pile may exceed the allowable value of the pile, and the mooring pile may be pulled down or pulled out from the seabed. If the mooring pile is damaged and the floating body is detached from the mooring pile, the floating body may flow out and drift, or the floating body may be damaged and sink.

  In such an emergency, it is better to know the location of the sink than the floating body drifts and the side wall is damaged or semi-sunk due to contact with debris such as debris or quay. For example, there is a floating body such as a floating pier in which seawater is introduced into the floating body and allowed to self-sink before the floating body breaks.

  For example, in Patent Document 1, a through-hole is provided in the bottom surface of a box-shaped floating body, a valve body is provided in the bottom-surface through-hole, an anchor is laid on the sea floor, and the box-shaped floating body is connected to the anchor and the valve body. A floating pier having a self-sink device connected by a mooring line having such a length that a tension acts when rising above a tide level or a water level is disclosed.

  Further, in Patent Document 2, as a self-sinking apparatus capable of surely precipitating a floating body, a water inlet is formed in the floating body in a self-settling apparatus that introduces seawater into the buoyancy tank chamber of the floating body and self-sinks the floating body. A valve device that opens with a weight is provided in the water introduction passage from the inlet to the buoyancy tank chamber, the weight is supported by the wire suspension means so that the valve device is closed, and a suspension wire of the wire suspension means is provided. A structure provided with a cutting device that lowers the weight by cutting by remote operation has been proposed.

  Moreover, in patent document 3, when it becomes an abnormally high water level, in order to prevent it coming out of a mooring pile and flowing out, when it becomes a predetermined high water level, as a self-sinking device of a floating body that opens a valve and self-sinks, Open valve seat, valve consisting of valve body and column, support member that supports the valve slidably up and down, open / close link mechanism using lever link equipped with weight, valve lower end and sink weight connected There has been disclosed a self-sinking device for a floating body comprising a mooring line that opens a valve against the closing urging force of an opening / closing link mechanism when the floating body rises and tension is applied to the mooring line.

Japanese Utility Model Publication No. 5-40088 Japanese Patent Laid-Open No. 11-11377 JP-A-4-261907

  In the self-sinking devices and floating piers disclosed in Patent Documents 1 to 3, when the water level is abnormally high due to the occurrence of a tsunami or the like, the valve that connects the inside and outside of the floating body is opened to introduce seawater or the like inside To self-sink. Since the self-sinking device disclosed in Patent Document 2 requires a remote operation to open the valve, the floating body may be damaged if the operation timing is delayed.

  Further, in both of the inventions described in Patent Document 1 and Patent Document 2, an opening is formed on the bottom surface of the floating body, and a valve device for opening and closing the opening is linked to a mooring line fixed to the seabed or the like. The valve device is actuated by the action of the tension of the mooring line when the floating body rises abnormally, and the opening is opened. Periodic repairs are performed against corrosion of the chain used for the mooring line. There is a need. In addition, it is necessary to periodically check the operation of the valve device, and there is a risk that the repair, the preparation of the check operation, the return operation, and the like will be complicated.

  Therefore, in the case of a tsunami or the like, when the tide level or water level of the sea surface or the river surface rises abnormally, the present invention causes the water to rise, and when the water level falls to the normal state, the surface rises. It is an object of the present invention to provide a self-sinking device for protecting a floating body that can be easily restored to its original state.

  As a technical means for achieving the above object, the floating body protection self-sink device according to the present invention is connected to a mooring pile and is guided by the mooring pile and floats on a water surface that rises and falls according to a change in water level. In a self-sinking device for protecting a floating body that protects the floating body from being damaged by introducing water and submerging it for emergency condemnation when the water level rises abnormally, the floating body is formed inside the floating body having a hollow casing The inlet tube that penetrates the side wall of the inlet tube and communicates the inside and the outside, and the opening of the outer side end portion of the introduction tube is closed, and the opening at the outer side end portion of the introducing tube is released by receiving an impact from the outside. A plug block to be opened, an appropriate height of the mooring pile, and a self-sediment-inducing member disposed at a position where the plug block collides with the rising of the floating body, and the introduction disposed in the middle of the introduction pipe A processing valve for opening and closing the pipe, and the floating body An air vent that communicates the inside and outside of the floating body provided on the face plate, a connecting member that is detachable from the air hose, and that is provided outside the air vent, and is floated with the processing valve open to be used. When the water level is abnormal, the plug block collides with the self-sinking inducing member due to the rising of the floating body, the plug block is detached, and water flows into the inside through the introduction pipe and sinks.

  When an abnormally high water level occurs due to a tsunami or the like, the floating body rises along the mooring pile to a higher place than normal. When the plug block collides with the self-sinking inducing member due to the rise to the abnormal height, the plug block is detached from the introduction pipe, the outer end of the introduction pipe is opened, and the inside and outside of the floating body are It communicates through the introduction pipe. In addition, since the processing valve is open, there is nothing that blocks the communication of the introduction pipe. For this reason, when water, such as seawater and river water, flows into the inside of the floating body through the introduction pipe and becomes a weight more than the buoyancy acting on the floating body, it sinks. If an appropriate amount of water flows in, it will land on the seabed or riverbed and stop almost at that position.

  When the water level is stabilized and the water depth is normal, an air hose is connected to the connecting member, and pressurized air is supplied from the outside into the floating body by a compressor or the like. When pressurized air is supplied, the water that has flowed into the inside is discharged to the outside of the floating body through the introduction pipe, the air gradually stays inside, and the buoyancy gradually increases, and the water surface such as the sea surface or river surface To surface.

  When the floating body rises, the processing valve is closed to close the introduction pipe. As a result, the inside and outside of the floating body are shut off, and thereafter the floating body is maintained in a floating state without supplying pressurized air. In this state, a plug block is attached to the outer side end portion of the introduction pipe to close the outer side end portion of the introduction pipe. Next, when the processing valve is opened, the floating body is restored to its original state.

  According to a second aspect of the present invention, there is provided a self-sinking apparatus for protecting a floating body, wherein the processing valve is exposed on an upper surface plate.

  For example, the processing valve can be arranged inside a floating body so that an operator can enter the inside of the floating body and operate the processing valve. It is what I did.

  According to a third aspect of the present invention, there is provided a self-sinking device for protecting a floating body, wherein a drainage hose that is connected to a suction side of a drainage pump when the plug block is detached can be attached to and detached from the outer end of the introduction pipe. It is characterized by being.

  When the floating body is levitated, a drainage pump is connected to the outer side end portion of the introduction pipe, and the water flowing into the inside is discharged by the drainage pump.

  According to the self-sinking apparatus for protecting a floating body according to the present invention, when an abnormally high water level or the like occurs, the floating body rises to an abnormal height so that seawater or the like is introduced therein, so that the floating body sinks. For this reason, it is prevented as much as possible that a mooring pile is damaged or it drifts carelessly and causes a secondary disaster. In addition, after the water level is stabilized, air can be supplied and floated inside, so that the floating body can be reused.

  In addition, since the introduction pipe that allows the inside and outside to communicate with the floating body side wall is penetrated, this through hole can be formed in the existing floating body, and the floating body can be easily modified. Moreover, when confirming the operation, it is only necessary to confirm that the plug block is detached and confirm the opening / closing operation of the processing valve. At this time, if the plug block can be attached and detached, it can be attached again after being removed for confirmation.

  Furthermore, by adjusting the length of extension of the self-sinking induction member, it is possible to adjust the amount of rise when the floating body self-sinks, so the amount of rise for the wave height to be self-settled according to the surrounding environment such as a port can be easily changed. And can be adjusted.

  Moreover, according to the self-sinking apparatus for protecting a floating body according to the invention of claim 2, the work for reusing the floating body can be easily performed. For example, the processing valve can be arranged inside the floating body so that an operator can enter the inside of the floating body and operate the processing valve. In addition, advancement / retraction with respect to the inside of the worker is performed by opening / closing a manhole provided on the upper surface plate of the floating body. In this case, the manhole is opened while supplying pressurized air to the floated floating body, but the pressurized air retained inside is released due to the opening of the manhole, and the floating body may sink again. . At this time, if the upper surface plate sinks below the water surface, water flows in from the manhole, and the sinking speed increases, and there is a possibility that it sinks in an instant.

  On the other hand, if the processing valve is exposed on the upper surface of the top plate as in the floating body protection self-sinking device according to claim 2, the interior is not opened by opening a manhole or the like. Thus, the floating body can be maintained in a suspended state, and the work for reusing the floating body can be performed smoothly.

  Moreover, according to the self-sinking apparatus for protecting a floating body according to the invention of claim 3, since the internal water is discharged when refloating, the floating body can be floated more quickly.

It is a schematic perspective view which shows the external appearance of the floating pier provided with the protective self-sedimentation apparatus which concerns on this invention. It is the schematic sectional drawing cut | disconnected by the vertical surface explaining the structure inside the floating jetty provided with the self-sink apparatus for protection which concerns on this invention. It is a figure explaining the process in which the floating pier shown in FIG. 1 sinks, (a) is in a state of floating in a normal state, (b) is a floating pier at an abnormally high water level, and the plug block is detached. Each state is shown. It is a figure explaining the process following the sinking process shown in FIG. 3, (a) has shown the state which sank under the water surface, (b) has each shown the state which sank and settled. It is a figure explaining the process of ascending a sunken floating pier, (a) is a state where an air hose is connected to the floating pier, (b) is a state where pressurized air is supplied to the inside and seawater is discharged, Show. It is a figure explaining the process following the levitation | floating process shown in FIG. 5, and has shown the state by which the floating pier was levitated.

  Hereinafter, based on the preferred embodiment shown in the drawings, a self-sinking device for protecting a floating body according to the present invention will be described in detail.

  FIG. 1 shows a floating pier 1 as a floating body connected to a mooring pile 2. That is, the floating pier 1 is formed in a cavity and floats on the water surface L such as the sea surface or the river surface, and the appropriate part is connected to the mooring pile 2 constructed on the sea bottom or the water bottom of the river bottom, so that the wave rises and falls. Ascend and descend while being guided by mooring pile 2. Moreover, this floating pier 1 and the land which is not shown in figure are connected by the crossover. A beam member 3 is stretched over the two adjacent mooring piles 2 of the mooring piles 2, and an impact rod 4 as a self-sinking inducing member is disposed below the central part of the beam members 3. It is provided in a stretched state. In addition, it is preferable that the extending length of the impact rod 4 can be changed.

  A plug block 6 is projected outward from the side wall of the floating pier 1. The plug block 6 is disposed vertically below the impact rod 4 so that the plug block 6 collides with the impact rod 4 when the floating bridge 1 rises to an abnormal height.

  In addition, an air vent 7 that communicates the inside and outside of the floating pier 1 is provided at an appropriate position on the top plate of the floating pier 1. As will be described later, the air vent 7 is assembled with a connecting member 7a for connecting an air hose. In addition, a shade (not shown) is placed on the upper part so that rain, wave splash, etc. do not enter inside during normal times.

  FIG. 2 is a vertical sectional view for explaining the inside of the floating pier 1 and shows a main part of the protective self-sink device according to the present invention. A plurality of introduction pipes 8 are arranged inside the floating pier 1, and end portions on the inner side of these introduction pipes 8 are opened in the floating pier 1. The external ends of these introduction pipes 8 are connected to the plug block 6, and the opening of the external end is closed by the plug block 6. After the plug block 6 is detached from the external end, The inside and outside of the floating pier 1 communicate with each other through these introduction pipes 8. The plug block 6 is separated from the outer end of the introduction pipe 8 by colliding with the impact rod 4, and since the detached plug block 6 is unclear where it is thrown out, it is discarded as a consumable item. It does not matter what is done.

  As shown in FIG. 2, the introduction pipe 8 has a substantially U-shaped path, and a processing valve 9 is provided on the upper part. In the processing valve 9, an operation knob is exposed to the upper surface plate so that the opening / closing operation can be performed from the upper surface plate of the floating pier 1. In addition, the periphery of the shaft of the operation knob is appropriately sealed to block the inside and outside around the shaft. Moreover, it is preferable to cover the operation knob above the operation knob with a height that coincides with the upper surface plate of the floating pier 1 so that the operation knob is not exposed by the cover in normal times. The inner end of the introduction pipe 8 is opened at a position facing the bottom plate of the floating pier 1.

  The operation of the self-sinking apparatus for protecting a floating body according to the present invention configured as described above will be described below.

  FIG. 3 (a) shows the state of the floating pier 1 in a normal state, and is floating on the water surface L. In the normal time, the processing valve 9 is opened. For example, when a large tsunami or the like occurs and the water surface L becomes abnormally high and the floating pier 1 rises to a height higher than the design value with respect to the mooring pile 2, the plug block 6 collides with the impact rod 4, and FIG. As shown in (b), the plug block 6 is detached from the outer side end portion of the introduction pipe 8, and the outer side end portion of the introduction pipe 8 is opened. For this reason, the inside and outside of the floating pier 1 communicate with each other through the introduction pipe 8.

  Since the outer end of the introduction pipe 6 is opened, water such as seawater and fresh water flows into the floating pier 1 through the introduction pipe 6. At this time, as shown in FIG. 4A, the internal air is discharged from the air vent 7. When water flows in, the weight becomes larger than the buoyancy, so that the floating pier 1 sinks and sinks to the bottom of the seabed or riverbed as shown in FIG. 4 (b).

  After the floating pier 1 is sunk, it is not affected by waves or the like, so the mooring pile 2 is stopped at that position unless the mooring pile 2 is damaged. Therefore, the sinking position of the floating pier 1 can be grasped, and it is prevented from drifting carelessly, thereby preventing a secondary disaster.

  When the tsunami or the like is eliminated and the wave height becomes normal, the sunken pier 1 is lifted.

  As shown in FIG. 5 (a), the air hose 11 is connected via a connecting member 7 a attached to the air vent 7. When the air hose 11 is connected to a discharge port of a compressor (not shown) and the compressor is operated, pressurized air is supplied into the floating bridge 1 via the air hose 11 as shown in FIG. . As a result, the water flowing into the inside is discharged to the outside through the introduction pipe 6. When pressurized air is supplied and stays inside and the buoyancy becomes larger than the weight, the floating pier 1 starts to float. As shown in FIG. 6, when the upper surface plate is exposed from the water surface, the operator gets on the upper surface plate. The processing valve 9 is closed. Thereby, the introduction pipe 9 is closed and the inside and outside of the floating pier 1 are shut off. For this reason, the inside of the floating pier 1 becomes a cavity and can float on the water surface without supplying pressurized air, and the air hose 11 is removed.

  With the floating pier 1 floating, a new plug block 6 is attached to the outer end of the introduction pipe 8, and the introduction pipe 8 is closed with the plug block 6. Thereafter, when the processing valve 9 is opened, the normal state, that is, the original state is restored.

  According to the self-sinking device for protecting a floating body according to the present invention, the floating body itself is prevented from being damaged by self-sinking at an abnormally high water level such as an abnormally high tide level due to the occurrence of a large tsunami or the like. When it returns, it will be lifted and returned to its original state for reuse, thus preventing secondary disasters caused by drifting on floating piers and contributing to a quick return to the original state.

L Water surface (sea surface, river surface)
1 Floating pier (floating body)
2 Mooring pile 3 Beam member 4 Impact rod (self-sediment-inducing member)
6 Plug block 7 Air vent
7a Connecting member 8 Introduction pipe 9 Treatment valve
11 Air hose

Claims (3)

The floating body that is connected to the mooring pile and is guided by the mooring pile and that moves up and down according to the change in the water level is damaged by introducing water and sinking for emergency blame when the water level rises abnormally In the self-sinking device for protecting floating bodies
An introduction pipe that allows the inside and outside of the floating body to communicate with each other through the side wall of the floating body, which is formed of a hollow casing inside;
A plug block that closes the opening of the outer side end of the introduction pipe and is released by receiving an impact from the outside to open the opening of the outer side end of the introduction pipe;
An appropriate height of the mooring pile, and a self-sediment-inducing member disposed at a position where the plug block collides with the rising of the floating body;
A processing valve for opening and closing the introduction pipe disposed in the middle of the introduction pipe;
An air vent that communicates the inside and outside of the floating body provided on the top plate of the floating body;
A connecting member that is detachably attached to the air hose, disposed outside the air vent;
Floating with the treatment valve open for use, and at the time of abnormal water level, the plug block collides with the self-sinking inducing member due to rising of the floating body, the plug block is detached, and water is introduced into the inside through the introduction pipe. A self-sinking device for protecting a floating body, characterized by flowing in and sinking.   2. The self-sinking device for protecting a floating body according to claim 1, wherein the processing valve is provided so as to be exposed on an upper surface plate.   The floating body according to claim 1 or 2, wherein a drainage hose to be connected to a suction side of a drainage pump is detachable at an outer end portion of the introduction pipe when the plug block is detached. Self-sinking device for protection.

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