JP4189481B2 - Underwater structure with self-sink device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an underwater structure having a structure in which a floating body is moored underwater by a mooring line, and more particularly, to an underwater structure with a self-sinking device in which the floating body self-sinks when the mooring line breaks.
[0002]
[Prior art]
Conventionally, an underwater structure having a structure in which a floating body is moored in water by a mooring line is known. A float-type artificial fish reef, which is a typical example of such an underwater structure, has a structure in which a floating body is provided at the upper portion and the floating body is moored to an anchor portion by a mooring line.
[0003]
[Problems to be solved by the invention]
However, the conventional float type floating body floats on the sea surface when the mooring line breaks, and there is a risk of causing serious damage to a sailing ship or the like.
[0004]
The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide an underwater structure having a structure in which a floating body sinks when a mooring line supporting the floating body is damaged.
[0005]
[Means for Solving the Problems]
The configuration of the present invention to achieve the above object is as follows.
[0006]
That is, the present invention has an underwater structure having a structure in which a floating body is provided at the top and the floating body is moored in water by a mooring line, and a lid portion in which an open cable is attached to the floating body is provided below the floating body. The reversing line connected to the open cable is attached above the floating body, and the mooring line breaks when the mooring line breaks. In this case, the undercover structure with a self-sink device is characterized in that the opening lid pulls the lid portion to make a hole in the floating body, and self-sinks when water enters the floating body from this hole. Further, the present invention provides an underwater structure having a plurality of floating bodies in the upper part and mooring the floating bodies in water by a mooring line, wherein the plurality of floating bodies are connected in series by the mooring lines. The floating body is provided with a lid portion to which an open cable is attached, and when the mooring line breaks, the open cable pulls the lid part to open a hole in the floating body, and water enters the floating body from this hole, It is an underwater structure with a self-sinking device, characterized in that all floating bodies are self-sinking when one mooring line breaks.
[0007]
The underwater structure with a self-sink device according to the present invention is characterized in that “the lid portion is attached so as to close a hole provided in the floating body by a fixing pin, and the fixing pin is broken when the mooring line is broken. the lid opening search is broken by the force pulling the lid "on," to have a protective means for preventing breakage of the open Futasaku "," said lid is provided a plurality of said floating body ", Is included.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
1 and 2 are views of an underwater structure with a self-sink device according to a first embodiment of the present invention, FIG. 1 is an overall perspective view, and FIG. 2 is a partially enlarged perspective view around a floating body.
[0010]
In these drawings, 11 is a floating body, 12 is an anchor portion, 13 is a mooring line, 14 is a support body, 15 is a saddle-like columnar body, 16 (16a, 16b) is an open lid line, 17 is an inverted line, 20 (20a 20b) is a self-sinking device.
[0011]
The underwater structure is attached to the peripheral edge of a plurality of disc-shaped (six in this example) support bodies 14, and a plurality of (eight in this example) mooring lines 13 fixed to the anchor part 12 at the lower end. The floating body 11 is moored underwater. The plurality of mooring lines 13 and the support body 14 constitute an elongated rod-like columnar body 15 serving as a fish reef, and the present underwater structure can be used as an artificial fish reef.
[0012]
The floating body 11 has sufficient buoyancy to levitate the rod-like columnar body 15 in the sea (underwater), and as the material thereof, a conventionally used material such as a steel material provided with an anticorrosion coating by FRP or the like is used. be able to.
[0013]
The floating body 11 in this example has a structure in which four main floating bodies 11 ′ are connected by eight sub-floating bodies 11 ″, all of which are hollow bodies and communicate with each other inside. Two self-precipitating devices 20a and 20b are attached to the lower side of the floating body 11 in a plane-symmetrical position (see FIG. 2).
[0014]
The anchor part 12 is for mooring the bowl-like columnar body 15 provided with the floating body 11 on the upper part, and is a heavy object such as a concrete structure. The anchor portion 12 of this example has an opening 19 formed at the center of the plate-like object so that it can be easily submerged on the seabed.
[0015]
As shown in the figure, mooring of the hook-like columnar body 15 to the anchor portion 12 is performed by bundling the mooring lines 13 constituting the hook-like columnar body 15 at the lower end portion and connecting to the anchor portion 12. However, the mooring lines 13 can be connected to the anchor portion 12 in the columnar position without being bundled.
[0016]
The mooring line 13 is a long rope-like object having flexibility and flexibility, such as a synthetic fiber rope, a metal wire with anticorrosion coating, a chain, a shackle, and the like, and is fixed to a plurality of supports 14. And both ends thereof are fixed to the floating body 11 and the anchor portion 12, respectively.
[0017]
The support 14 can be made of, for example, a fiber reinforced plastic or a metal with an anticorrosion coating. The support body 14 of this example has a disk shape, and has a hole through which the open lid 16 passes.
[0018]
The open lid 16 is a long rope-like material made of the same material as that of the mooring cable 13, and is located in the center of the bowl-shaped column 15 through a hole provided in the center of the support 14. The lower end is fixed to the anchor portion 12. As shown in FIG. 2, the upper end of the open lid 16 is branched into two, and the two open ropes 16 a and 16 b are self-sinking devices 20 a through the conduit 18 attached to the floating body 11. , 20b, respectively.
[0019]
The reversing cable 17 is also a long rope-like material made of the same material as the mooring cable 13, and one end is connected to the lid cable 16 and the other end is connected to the upper side of the floating body 11 through the outside of the floating body 11 as shown in FIG. Has been.
[0020]
Next, the configuration and operation of the self-sink apparatus of this example will be described with reference to FIGS. 3 is a partial cross-sectional view around the self-sink device provided on the floating body, and FIG. 4 is a partial perspective view around the floating body when the mooring line is broken.
[0021]
As shown in FIG. 3A, the self-sink apparatus 20 is mainly composed of a pipe portion 21 and a lid portion 22.
[0022]
The pipe portion 21 is a tubular member that is fitted into a hole formed in the surface of the hollow floating body 11, and is fixed to the floating body 11 by welding or the like.
[0023]
The lid portion 22 is a member in which the plug portion 23, the lid 24 and the hook 26 are integrated. The lid portion 22 is fixed to the tube portion 21 by the fixing pin 25 at the peripheral portion of the plug portion 23 through the packing 27 and closes the hole of the tube portion 21 integrated with the floating body 11.
[0024]
Then, by connecting the open lid 16 (16a, 16b) to the hook 26, the open lid and the self-sinking device 20 (20a, 20b) are connected. Here, the open lid 16 (16a, 16b) has a sufficient length so that the floating body 11 is in a relaxed state when the floating body 11 is moored in the water by the mooring rope 13. A large pulling force is not applied to the hook 26 from (16a, 16b).
[0025]
In the underwater structure of the present example provided with the self-sink device 20 (20a, 20b) having the above-described configuration, when all the mooring lines 13 are broken, the floating body 11 is lifted, and the uncovered lines 16 (16a 16b) pulls the lid portion 22. At this time, the fixing pin 25 is designed so as to be broken by the force with which the lid 16 (16a, 16b) pulls the lid portion 22, so that the lid portion 22 becomes a tube portion as shown in FIG. Thus, the hole 28 is opened in the floating body 11. In addition, when a part of the mooring line 13 is cut, the remaining mooring line supports the floating body 11, but the force applied to the mooring line is uneven and a very large force is applied to one mooring line. All mooring lines are cut sequentially as time passes.
[0026]
The fixing pin 25 is preferably made of a resin or the like so as to be surely broken with a relatively small force when the cover portion 22 is removed, and a notch portion may be provided at a predetermined position in order to facilitate breakage. preferable.
[0027]
When the lid portion 22 is removed as described above, the only cable connected to the floating body 11 is the reversing cable 17, and the reversing cable 17 passes through the outside of the floating body 11 and is connected above the floating body 11. 4 is further lifted so that it is turned upside down, and the state as shown in FIG. 4 is obtained. Seawater flows into the floating body 11 from the hole 28 opened in the floating body 11, and the floating body 11 loses buoyancy and sinks.
[0028]
Further, the open lid 16 of this example is in a state protected by the rod-like columnar body 15 and has a structure capable of preventing the open lid 16 from being broken before the mooring line 13. The self-sinking device can function reliably.
[0029]
In the present invention, even one self-sinking device provided in the floating body can function. However, by providing a plurality of self-sinking devices in the floating body as in this example, for example, one hole 28 is a water inlet and the other is air. It is possible to make the floating body sink more reliably.
[0030]
Next, a second embodiment of the underwater structure with a self-sink device of the present invention will be described.
[0031]
FIG. 5 is an overall perspective view of the underwater structure of this example, in which 51 is a protective tube and 52 is a hook.
[0032]
The underwater structure has a structure in which a plurality (five in this example) of spherical floating bodies 11 a to 11 e are connected in series by a mooring line 13 and anchored to an anchor part 12. This underwater structure can also be used as an artificial fish reef.
[0033]
Two self-sink devices 20 each having the structure shown in FIG. 3 are attached to each floating body, and a lid 16 is attached in series to hooks 26 of these self-sink devices 20.
[0034]
The lid 16 is protected by a protective tube 51 to prevent cutting. The upper end is fixed to the hook 52 provided on the uppermost floating body 11a, and the lower end is fixed to the anchor 12. Further, the open lid 16 has a sufficient length so that the floating body is in a relaxed state when the floating body is moored in the water by the mooring rope 13. Normally, the open lid 16 extends from the open lid 16 to the hook 26 of the self-sink device. No great pulling force is applied to the.
[0035]
The protective tube 51 is preferably flexible, and for example, a metal wire assembled in a mesh shape can be used.
[0036]
In the underwater structure of this example having the above-described configuration, for example, when the bottom mooring line is broken, the floating body 11e is first lifted. Then, with the force according to the buoyancy, the lid cable 16 pulls the lid portions 22 of the two self-sink devices 20 attached to the floating body 11e, and the lid portions 22 come off as shown in FIG. Individual holes 28 will be opened. In the same manner, the lids 22 are successively removed from the lower floating bodies to open holes 28 in all the floating bodies, and seawater flows into the floating bodies, and all the floating bodies lose their buoyancy and sink. When the fixing pin 25 of the self-sinking device 20 is designed so that it can be cut very easily, the lid portion 22 may come off from all the floating bodies almost simultaneously.
[0037]
For example, when the uppermost mooring line breaks, the floating body 11a first floats. Then, the lid 16 is pulled by the force corresponding to the buoyancy to pull the lids 22 of the two self-sink devices 20 attached to the float 11a, and the lids 22 are removed as shown in FIG. Individual holes 28 will be opened. When the fixing pin 25 of the self-sink device 20 is designed to be cut very easily, the lid 22 is removed from the upper floating body one after another by the buoyancy of the floating body 11a, and seawater flows into the floating body. The floating body loses buoyancy and sinks.
[0038]
As explained above, the underwater structure of this example can sink all the floating bodies when any one mooring line 13 is cut. Further, since the open lid 16 is protected by the protective tube 51 and has a structure capable of preventing the open lid 16 from being broken before the mooring line 13, the first embodiment As with the configuration, the self-sinking device can function reliably.
[0039]
Further, in this example, the reversing rope 17 as in the first embodiment is not provided, but the self-sink device is attached to each floating body so that at least one hole is positioned upward when the hole 28 is opened in the floating body. By designing the position, seawater can surely flow into the floating body. In addition, since the upper end of the open lid 16 is fixed to the uppermost floating body 11a by the hook 52, no matter which part of the mooring line 13 is cut, the remaining mooring line 13 or the open lid line 16 causes all the floating bodies to be Since it remains moored to the anchor portion 12, the floating body will not be separated.
[0040]
Next, a reference embodiment example of the underwater structure with a self-sink device of the present invention will be described.
[0041]
FIG. 8 is an overall perspective view of the underwater structure of this example, and FIG. 9 is a partially enlarged perspective view around the floating body.
[0042]
In this underwater structure, a plurality of (four in this example) the floating body 11 provided on the upper part is attached to the peripheral part of a plurality of disk-like (two in this example) support 14 and fixed to the anchor part 12. ) Mooring line 13). This underwater structure can also be used as an artificial fish reef.
[0043]
The floating body 11 of this example has a structure in which two main floating bodies 11 ′ are connected by four sub-floating bodies 11 ″, both of which are hollow bodies and communicate with each other inside. 3, two self-sinking devices 20a and 20b having the structure shown in FIG. 3 are attached, and open lids 16a and 16b are attached in a relaxed state to hooks 26 of these self-sinking devices, respectively. .
[0044]
The lower ends of the open lid cables 16a and 16b are fixed to the anchor portion 12 through holes provided in the central portion of the support body 14 as in the first embodiment. Moreover, as shown in FIG. 9, fixtures 91a and 91b are attached to the upper ends of the open lids 16a and 16b, respectively.
[0045]
In the underwater structure of the present example having the above-described configuration, when the mooring line 13 is broken, the floating body 11 is lifted, and two self-sinks in which the open lid lines 16a and 16b are attached to the floating body 11 with a force corresponding to the buoyancy. By pulling the lid portion 22 of the devices 20a and 20b, the lid portion 22 is removed and two holes 28 are opened in the floating body 11 as shown in FIG. At this time, the fixtures 91a and 91b attached to the upper ends of the open lid cables 16a and 16b are stopped at the passage pipe 18 portion, and the floating body 11 can be prevented from further rising.
[0046]
When the lid portion 22 is removed as described above, seawater flows into the floating body 11 from the hole 28 opened at the top of the floating body 11, and the floating body 11 loses buoyancy and sinks.
[0047]
The open lids 16a and 16b of this example are also protected by the bowl-like columnar body 15, and have a structure that can prevent the open lids 16a and 16b from breaking before the mooring line 13. Therefore, the self-sinking device can function reliably.
[0048]
As described above, the two embodiment examples and the reference embodiment of the underwater structure with a self-sink device of the present invention have been described. When the mooring line is broken, the opening line pulls the lid portion to make a hole in the floating body. As long as it is capable of self-sinking, the design of the self-sinking device, floating body, and other components can be changed as appropriate.
[0049]
Moreover, when using the underwater structure of this invention especially as artificial reef, it is preferable to surround the rod-shaped columnar body 15 in 1st Embodiment with a net | network, for example. In this way, the surface area of the artificial fish reef that promotes the growth of algae and microorganisms can be easily increased. Further, a plurality of the bowl-shaped columnar bodies 15 described above can be moored to the anchor portion 12.
[0050]
【The invention's effect】
The underwater structure of the present invention is as described above, and has the following effects.
(1) Since the floating body has a structure that sinks when the mooring line supporting the floating body is cut, there is no concern that the floating body will cause damage to the navigation vessel. In particular, when the underwater structure of the present invention is used as an artificial fish reef, the floating body often has a large size exceeding several meters, and the effect of applying the present invention is extremely large.
(2) In particular, when a protective means for preventing breakage of the open lid is provided, it is possible to prevent the open lid from breaking before the mooring line, and the self-sink device can function reliably. Thereby, an underwater structure with a self-sink device with higher reliability is realized.
(3) In particular, when a plurality of self-sink devices (lids) are provided on the floating body, the floating body can be more reliably subsidized.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of an underwater structure with a self-sink device according to a first embodiment of the present invention.
FIG. 2 is a partially enlarged perspective view around the floating body of the underwater structure with a self-sink device according to the first embodiment of the present invention.
FIG. 3 is a partial cross-sectional view around the self-precipitation device provided in the floating body of the underwater structure with the self-precipitation device according to the first embodiment of the present invention.
FIG. 4 is a partial perspective view around a floating body when a mooring line breaks in the underwater structure with a self-sink device according to the first embodiment of the present invention.
FIG. 5 is an overall perspective view of an underwater structure with a self-sink device according to a second embodiment of the present invention.
FIG. 6 is a perspective view showing a state in which a mooring line in an underwater structure with a self-sink device according to a second embodiment of the present invention is broken.
FIG. 7 is a perspective view showing a state in which a mooring line in an underwater structure with a self-sink device according to a second embodiment of the present invention is broken.
FIG. 8 is an overall perspective view of an underwater structure with a self-sink device according to a reference embodiment of the present invention.
FIG. 9 is a partially enlarged perspective view around a floating body of an underwater structure with a self-sink device according to a reference embodiment of the present invention.
FIG. 10 is a partial perspective view around a floating body when a mooring line breaks in an underwater structure with a self-sink device according to a reference embodiment of the present invention.
[Explanation of symbols]
11, 11a to 11e Floating body 11 'Main floating body 11 "Sub-floating body 12 Anchor part 13 Mooring line 14 Support body 15 Saddle-shaped columnar bodies 16, 16a, 16b Uncovered line 17 Reverse line 18 Cable line 19 Openings 20, 20a, 20b Self-precipitation apparatus 21 Pipe part 22 Lid part 23 Plug part 24 Lid 24
25 Fixing Pin 26 Hook 27 Packing 28 Hole 51 Protective Tube 52 Hook 91a, 91b Fixing Tool

Claims (5)

An underwater structure having a floating body in the upper part and having a structure in which the floating body is moored underwater by a mooring line, a lid portion having an open cable attached to the floating body is provided below the floating body, and above the floating body An inversion line connected to the open cable is attached, and the vertical direction of the floating body is reversed when the mooring line is broken. When the mooring line is broken, the open cable is An underwater structure with a self-sinking device, characterized in that the lid part is pulled to make a hole in the floating body, and water self-sinks by entering water into the floating body through the hole. An underwater structure having a structure in which a plurality of floating bodies are provided at an upper portion, and the floating bodies are moored underwater by a mooring line. The plurality of floating bodies are connected in series by the mooring lines, and the lid is opened to the floating body. When the mooring cable breaks, the lid cable pulls the lid and opens a hole in the floating body, and water enters the floating body through this hole, and one mooring line An underwater structure with a self-sink device , wherein all floating bodies are self-sinkable when broken . The lid is attached by a fixing pin so as to close a hole provided in the floating body, and the fixing pin is broken by a force that pulls the lid when the mooring line is broken. The underwater structure with a self-sink device according to claim 1 or 2 . The underwater structure with a self-sink device according to any one of claims 1 to 3, further comprising protective means for preventing breakage of the lid cable. The underwater structure with a self-sink device according to any one of claims 1 to 4 , wherein a plurality of the lid portions are provided on the floating body.

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