JPS611335A - Underwarter structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a structure moored underwater or on the surface of water.

More specifically, the present invention relates to various structures that can maintain a posture with low water flow resistance for a long period of time underwater, and thus have durability, and is particularly useful for floating fish reefs.

[Prior art]

Conventional underwater structures 2, such as floating fish reefs, have a cylindrical shape.

Some types have polygonal prism-shaped bodies that are moored to anchors on the bottom of the water using mooring ropes, but since these have relatively large horizontal projected areas, the resistance to water flow increases in proportion to the width. For this reason, there is a problem that strong force is applied to mooring ropes in places where the flow velocity is high, reducing durability. Another problem is that increasing durability requires strong materials, which makes them expensive.

In addition, as an underwater structure that reduces flowing water resistance, there is, for example, Japanese Patent Application Laid-Open No. 54-64829, which places a mooring point, a center of buoyancy, two centers of gravity from the upstream side of the flow, and balances them. By doing so, it is possible to maintain a posture that reduces the horizontal projected area, thereby reducing water flow resistance. Although this method is excellent in the short term, if used in the long term, a large amount of organisms such as barnacles and oysters will adhere to the water, especially in the sea.

The underwater weight of the structure increases. For this reason, there is a problem in that the balance in letter L is lost and the rear part of the structure sags, making it impossible to achieve the intended purpose.

[Problem that the invention seeks to solve]

The present invention improves these conventional drawbacks. That is, the object is to maintain a posture that reduces the horizontal projected area underwater, thereby reducing water flow resistance and improving the durability of the structure. Another purpose is to maintain this effect even when a large amount of -C organisms adhere to the product after long-term use. Furthermore, for the reasons mentioned above, changes in blowing due to changes in current velocity, that is, changes in the angle between the perpendicular line of the mooring point and the mooring rope, are small, so changes in the depth of the structure are small, and the escape of fish due to this is reduced. The purpose is to improve the concentration effect.

[Failure to solve the problem]

The present invention provides a structure consisting of an elongated fuselage, and at least one tail fin provided at the rear of the fuselage in a direction facing toward the rear of the fuselage;
A branch rope-like object consisting of a front rope-like object attached to the front part of the structure, and a rear rope-like object attached to the rear part and having the same length or more.

This is an underwater structure consisting of substantially one mooring rope-like object moored from each other end of the branch rope-like object.

In the present invention, an elongated body has only to have an area projected in the length direction that is smaller than a maximum area projected in a direction perpendicular thereto, and its shape is not limited in any way.
3.The purpose of the present invention can be achieved by the elongated body as described below.

The tail plane works so that the fuselage is always parallel to the direction of water flow when viewed from above. For this reason, it is preferable that it be located at the rear of the fuselage and facing downward. The reason why it is provided facing downwards is that if it is used only underwater, it may be facing upwards, but if it is facing downwards, it is also effective for defining above water, or between above water and underwater, and in addition, a material with a specific gravity greater than 1 is used. This is because it also has the effect of stabilizing the structure. The area of the tail is 10 to 30 times the maximum projected area of the fuselage.
% is preferable. If it is less than this, the above-mentioned effect will be small, and if it is more than 2, the effect will be there, but it will not be economical. The shape of the tail is preferably horizontally elongated, shifted, and swept back to reduce the possibility of catching floating objects.

The branch rope-like objects work so that the structure is nearly parallel to the flowing water direction when viewed from the side. For this reason, the length of the rear rope-like object must be the same as or longer than the front rope-like object. The reason for this is that the above-mentioned blowing occurs in the structure depending on the flow velocity.

On the other hand, when the specific gravity of the structure is less than 1, an upward force due to buoyancy is applied to the nine-sided rope-like object, and when the specific gravity is greater than 1, a downward force due to gravity is applied, so that it does not loosen. This is to reduce the angle of attack of the structure, that is, the angle between the longitudinal extension of the structure and the horizontal line, which increases due to these. For this reason, the length of the rear rope-like object is set to be equal to or longer than the length of the front rope-like object, depending on the flow velocity at the installation location, etc. Also.

Since the upward force applied to both ropes is set to be greater than the underwater weight of the attached organisms, there is no problem of the front or rear part of the structure sagging. Rope, wire, Cheno 2, etc. are used as the branch rope-like material, and these materials are used.

And the structure is not particularly limited.

A mooring rope that is moored to the bottom of the water or an object on the water is
A one-point mooring, that is, one mooring that follows changes in the direction of water flow, is preferable. However, scuttling equipment and various observation equipment 1
There is no problem in adding ropes, power or communication cables, etc. Further, the material and structure of the mooring rope-like object are not particularly limited, similar to the above-mentioned branch rope-like object.

The body is composed of various materials such as plastic, reinforced plastic, corrosion-resistant metal, and corrosion-resistant metal 1, but if the specific gravity of the structure is less than 1.

In particular, plastics such as polyethylene and ABS resin are preferable because they have a low specific gravity, are lightweight and easy to handle, require less buoyancy, and do not corrode. The shape of the spherical float may be spherical or oblate. The rod-shaped body may be a polygonal column or a cylinder, and the inside may be solid or hollow, but a cylindrical body is preferable for ease of processing, ease of handling, economical efficiency, etc. The fixture is a clamp type,
A screw-in type, an inset type, etc. can be used, but a clamping type in which a concave portion corresponding to the external shape of the rod-shaped body is provided and the rod-shaped body is clamped from both sides is superior in terms of durability. In this case, the tightening is performed using corrosion-resistant bolts or the like. The flat ring-shaped frame is
Although it is manufactured according to the outer diameter and number of floats, it is easy to fix the floats.

This is preferable because the assembly work is simple and the float is protected.

One of the features of the present invention is that any desired fuselage can be formed by combining the above-mentioned members. i.e. purpose of use, form of use, ocean conditions.

The material depends on the installation cost, service life, and type of fish collected.

Size, structure 2, etc. can be selected. For this reason,
It is possible to improve durability, economical efficiency, fish attracting effect9, etc.

The netting and artificial seaweed placed at the bottom of the body, or the artificial seaweed placed on the mooring rope, create a shadow effect.

The eddy current effect and the feeding effect of sessile organisms enhance the attracting effect of fish, and depending on the fish species, it can also be used as a spawning ground.
Protective shelves 9 are also effective in increasing aquaculture.

As these materials, known synthetic fibers and films are used.

The present invention will be specifically explained using drawings. FIG. 1 is a diagram showing an embodiment of the underwater structure of the present invention installed on the water surface.
(A) is a plan view, and (B) is a side view.

The body 1 consists of two long rod-like bodies with 16 spherical floats 2 attached to their two parts, and two short rod-like bodies 4. It is composed of four sets of fixtures 5 which are interconnected. Two tail wings 6 are provided at the rear of this to form a structure. A branch rope-like member consisting of two front rope-like members 7 and two rear rope-like members 8 is provided below the structure. One mooring rope-like member 9 from this branch rope-like member is moored to an anchor 11 on the water bottom 10 via a checker 712. A predetermined number of auxiliary buoyant bodies 14 are provided in the middle of the mooring rope via the rope 1. A net-like material 15 is stretched over the lower surface of the fuselage, and a predetermined number of artificial seaweeds 16 are attached to the fuselage, the tail wing, a branch rope-like material, a mooring rope, the rope 13, etc. Further, a marker light 17 is connected to the rear of the structure and floated on the water surface 18.

A feature of this embodiment is that the size of the structure can be easily changed by changing the lengths of the rods 6 and 4. In addition, the provision of two tails provides good directionality, and the addition of artificial seaweed 16 from the tail further enhances this effect.

Get a great shading effect. In addition, the artificial seaweed attached to the mooring rope 9 enhances the attracting effect not only for surface fish species but also for middle and bottom fish species. Note that the reason for providing the auxiliary buoyancy body 14 is to alleviate the impact force applied to the mooring rope and the structure, and to reduce the possibility that the structure sinks below the water surface due to flowing water resistance.

The reason for using Che 7 is to alleviate the above-mentioned impact force and increase the fixing force to the bottom of the water.

The branch ropes 7 and 8 have the effect of preventing the structure from overturning, or reducing the water flow resistance when the structure sinks below the water surface due to water flow resistance when the flow velocity is high. Details of the latter will be described later.

The body 1 is constructed by connecting two flat ring-shaped frames 19 with floats 2 attached thereto by four rod-shaped bodies 20. The anchor used was a dohyo ring with a predetermined weight.

In addition to the above-mentioned features, the present embodiment is particularly characterized by being installed below the water surface, so that it does not obstruct the navigation of ships on the water surface, and prevents damage to the structure due to single ships or drifting objects, or the cutting of mooring ropes. There was no damage, so it was a matter of fact for both sides. In addition,
To explain the advantages compared to conventional structures, the water flow flows from the left side to the right side of the page, but as the flow speed increases, conventional structures have a large resistance to flowing water, so they move around the anchor around the anchor. It rotates a lot and the depth of the structure increases greatly. As a result, the fish that were exposed to octopuses in Part 1 escape and become beeful. In the present invention, the projected area in the horizontal direction is reduced by having a small projected area in the longitudinal direction of the structure and by setting the lengths of the branch ropes 7 and 8 according to the flow velocity of the water area in which it is installed. For this reason.

The water flow resistance is reduced, and the above-mentioned fish do not escape, resulting in a high catchment effect. ′! 1, it is highly durable.

Example 1 A description will be given based on FIG. 1. A spherical float made by AB S with a diameter of 360 mm was used as the float, and a rod-shaped rod made by Roba BRP with an outer diameter of 90 mm, an inner diameter of 75 mm, and a length of 4 m was used. To fix the float and rod-like body, a rubber receiver with a depression corresponding to the external shape of both was held between the two and tied together with a rope. The rod-shaped body 4 uses the same Z-ib and has a length of 1.
It was set as m. The fixing device is made by Bo IJ Kofren and has a width of 300 mm.
, a plate with a length of 300 mm and a height of 70 mm, and a radius of 47 mm.
Seven semicircular recesses were provided in the shape of seven characters, and the rod-shaped filter 4 was sandwiched from above and below with seawater-resistant rubber gaskets, and connected and fixed with bolts provided at the four corners. ,
The tail wing was made of stainless steel plates with a thickness of 6III11, and the area of each was 0.55 m2. This area was 15 times the maximum projected area of the fuselage. A band was provided on the tail and attached to the rear of the rod-shaped body with bolts. The branch rope-like object 7°8 uses Tetron cross rope 18mm, and the lengths are 2.8m and 4.4m. The mooring rope is a Tetron cross rope - 1 part uses 18 volumes and the lower part uses 16 trunks, with a total length of 800 m and 2. Of these, 100 rn of the part near the anchor is covered with PVC. The anchor used was a Chinese anchor, and the weight was approximately 400 kg including the chain. The net is made of Tetron black spun-dyed monofilament with a diameter of 2.7 m.
m, and a 50 mm eyelet was used. The artificial seaweed is made by bundling 10 sheets of Tetron non-woven fabric 100mm wide and 15m long to make one, and then attaching 10 seaweeds. The auxiliary buoyant body is float 2
Eight pieces similar to the above were used.

The constructed underwater structure was installed in the sea at a depth of 4.00 m. After installation, the structure was located on the surface layer and showed good orientation with respect to the direction of the tidal current. In addition to adult fish such as bonito, tuna, and dolphinfish, many small fish were also observed to be eclipsed.

Example 2 This will be explained based on FIG. 2. Flat ring-shaped frame 19
Made from 1 inch stainless steel pipe.

They were connected by welding using a rod-shaped body 20 made from a similar pipe.

The other members used were the same as in Example 1.

The lengths of the branch ropes 7 and 8 are 2 m and 285 m.

The total length of the mooring rope was 960 m. However, the length of the mooring rope is the length when a load equivalent to excess buoyancy is applied.

The created underwater structure was installed in the sea at a depth of 10,013 m. After installation, it was observed that the depth of the structure changes less due to changes in tidal current speed compared to conventional floating fish reefs.

〔Effect of the invention〕

The effects of the present invention are summarized as follows.

■It is highly durable as it can reduce water resistance.

Changes in the depth of the structure are also smaller, making it more effective at attracting fish. Furthermore, this effect will continue even if you use it for a long time and the creature gets +1.

■1 By providing a tail, it not only provides directionality but also stabilizes the structure, improving the effect of attracting fish.

■・Since it is composed of each component, the purpose of use, form of use,
Marine conditions, installation costs, service life, and species of fish collected.

It can be any structure depending on the situation. For this reason, durability, economical efficiency, and the collecting effect 9 can be improved. It is still easy to transport and handle the two parts.

(2) By using a flat ring-shaped frame, it is easy to assemble the float fixing 9, and the float is protected.

■By using net autumn products and artificial seaweed.

It enhances the shading effect, eddy current effect, and bait effect, and has a high attracting effect not only for surface layer fish species but also for middle layer and bottom layer fish species. It is also effective as a spawning reef and has a protection value of 2.

・O8 By installing it below the water surface, it will not obstruct the navigation of ships and will not be damaged, so it is useful for both parties.

■Compared to conventional floating fish reefs, the resistance to running water is small, which greatly improves durability and trapping effect. Therefore, it is useful in the fisheries industry.

■ Any structure moored in ice water 2 For example, in addition to floating fish reefs, observation facilities for tidal currents, water temperature, salinity 1, etc.

It can also be applied to various storage facilities, human habitation facilities, etc.

[Brief explanation of drawings]

FIG. 1 is a diagram showing one embodiment of the present invention, and (A) is Hei 1:
Body 2: Spherical float 3: Long rod 4: Short rod 5: Fixture 6: Tail Wing 7: Front rope 8: Rear rope 9: Mooring rope 10: Water Bottom 11: Anchor 12: Cheno 1 Rope: Rope 14: Auxiliary buoyant body 15: Net 16 Two artificial seaweed 17: Signal light 18: Water surface 19; Flat ring-shaped frame 20: Rod-shaped body Patent applicant Azuma Shi Co., Ltd. company number 10

Claims (8)

[Claims] (1) A structure consisting of an elongated fuselage, at least one tail mounted downward at the rear of the fuselage, a front rope-like object attached to the front of the structure, and a structure attached to the rear of the structure. An underwater structure consisting of a branch rope-like object consisting of a front rope-like object and a rear rope-like object having the same length or longer, and substantially one mooring rope-like object moored from each other end of the branch rope-like object. thing. (2) The body is provided with one or more plastic spherical floats in the upper part along the length direction, and two or more elongated plastic rod-shaped bodies arranged parallel to each other, and the rod-shaped bodies Claim (1) consisting of two or more short plastic rods arranged at right angles and a plastic fixture that interconnects these rods.
Underwater structures described in Section 1. (3) The body is provided with two or more plastic spherical floats inside along the length direction, and two or more flat ring-shaped frames arranged parallel to each other, and these frames are interconnected. An underwater structure according to claim (1), which comprises two or more rod-shaped bodies. (4) The maximum projected area of the tail is 10 times the maximum projected area of the fuselage.
30% of the underwater structure according to claim (1). (5) The underwater structure according to claim (1), wherein the structure has a specific gravity of less than 1. (6) The front rope-like object is attached to the front of the underwater center of gravity of the structure, and the rear rope-like object is attached to the rear of the underwater center of gravity of the structure.
Underwater structures listed in ). (7) An underwater structure according to claim (1), wherein the body is provided with a net-like material on its lower surface. (8) An underwater structure according to claim (1), which comprises artificial seaweed.