JPH0453255Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention] "Industrial application field" This invention relates to floating fishing reefs.

``Prior Art'' Floating fishing reefs can be roughly divided into those with floating bodies floating on the sea and those with floating bodies located in the middle layer of the sea. Among these, floating bodies floating on the sea are easy to locate, but are easily affected by waves and ocean currents. On the other hand, floating bodies located in the middle layer of the ocean are difficult to locate, but are less susceptible to the effects of waves and ocean currents. Floating fishing reefs with floating bodies floating on the sea include bundles of bamboo rafts or cylindrical cages made of synthetic resin filled with floats placed horizontally. There is also a similar type of horizontal float made by wrapping a large number of floats in a fishing net.

Conventionally, there are floating bodies equipped with a pump, and the pump pumps up seawater from the surface layer and sprays it on the sea surface, thereby increasing the effect of attracting fish.

FIG. 8 is a partially sectional front view of such a conventional example. The floating body 41 has the shape of a rotating body centered on a mast 42, that is, the shape of a top. 43 is Radar Reflector, 44 is Torou. 45 is a solar cell, and 46 is an annular weight fixed to the floating body 41 to keep the floating body 41 stable. 4
7 is a mooring ring. Sprinkle pump holes 48 are provided at two locations facing each other with the center of the floating body 41 in between, through which shallow seawater is pumped up by a pump (not shown) and the seawater is sprayed.

``Problem that the invention seeks to solve'' In conventional systems, resistance becomes excessive in areas with fast currents, causing floating bodies to be pulled into the sea, destroyed by water pressure, and sink. Similarly, there is a drawback that floating objects etc. may be destroyed during stormy weather. As described above, the conventional method cannot be used in sea areas with large resistance and fast currents, or sea areas with frequent stormy weather. The system shown in Figure 8, in which shallow seawater is pumped up and dispersed, does not have active biological cultivation means such as fish food, so it has been difficult to increase the limit of the fishing reef effect.

The purpose of the present invention is to solve the problems of the conventional floating fishing reef described above and to provide a floating fishing reef that can be applied to sea areas with fast currents. Another object of the present invention is to provide a floating fishing reef with a higher fishing reef effect by having means for growing organisms.

[Structure of the idea]

"Means for Solving the Problems" The present invention is based on a floating fishing reef that is moored by a rope connected to an anchor sunk on the seabed and equipped with a means to enhance the fishing reef effect. A centerboard large enough to create a fishing reef effect is attached to the bottom of the float, and hydrofoils are attached to the centerboard to increase buoyancy in response to increased tidal current velocity, creating a seawater agitation effect due to tidal currents. It is a floating fishing reef equipped with seawater stirring means extending downward from the float, and as an embodiment, (1) the seawater stirring means are lined up in a line in the front-rear direction on both sides of the centerboard, with the cross section extending downward facing the bow side. The floating fishing reef described above once had a convex shape.

It is.

``Effect'' When the current increases, the boat-shaped float experiences resistance. However, unlike a normal fishing reef, there is little resistance, but because it is moored, it tends to sink. On the other hand, when the tidal current becomes large, the hydrofoil generates a lifting force that lifts the float against the force that tends to sink the float, so the float always remains afloat. Because of the centreboard, the bow is always facing the direction of the current. Therefore, the tidal current collides with the seawater stirring means from the direction that has the greatest seawater stirring effect. Since the center board is large and airfoil-shaped, it is easy for living things to attach to it and has a fish-attracting effect.

When embodiment (1) is adopted, the vortex is large on the downstream side of the tidal current stirring means, increasing the fish gathering effect.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Figures 1 to 5 are six views of floating fishing reefs. However, although the side view is shown in FIG. 1, it is symmetrical and the other side views are the same as FIG. 1. Figure 2 is a plan view;
FIG. 3 is a bottom view, FIG. 4 is a front view, and FIG. 5 is a rear view. FIG. 7 is a perspective view of the floating fishing reef.

1 is a ship-shaped float, with the bow on the left and the stern on the right in Figure 1. The ship-shaped float 1 is a sealed hollow body made of FRP, but if necessary, it is coated with ferrous sulfate, which has a large effect on biological attachment and proliferation.
By making the float 1 boat-shaped, resistance due to tidal currents can be reduced, and it can be adapted to sea areas where the tidal currents flow at high speeds. A large centerboard 2 is provided at the bottom of the boat-shaped float 1 starting from the center near the bow. The front edge 2a of the centerboard 2 is receded downward, and extends from the lower end of the front edge 2a gently diagonally rearward to just below the stern of the float 1. The centerboard 2 is designed to increase the fishing reef effect by taking advantage of the habit of fish that prefer shade and to approach walls, and also to reduce the resistance of the float 1 to the tidal current by directing the bow of the float 1 in the direction opposite to the tidal current. A deep water suction nozzle 16 and a hydrofoil 3, which will be described later, are oriented in a direction opposite to the
This is to ensure that these effects are exhibited. Therefore, it is shaped like an airfoil or a flat plate.

By installing a large centerboard 2, it is possible to lower the overall center of gravity, which reduces lateral sway (rolling) and creates a structure that prevents the float 1 from capsizing, which prevents damage due to capsizing and mooring breakage accidents. is prevented.

A hydrofoil 3 is fixed to the lower end of the leading edge 2a of the centerboard 2 so that the center of the leading edge of the wing coincides with the lower end. The hydrofoil 3 increases lift as the tidal current becomes faster, and the buoyancy (displacement amount) of the float 1 can be reduced accordingly. As the current speed increases, float 1
The tension of the mooring rope increases due to the resistance of the mooring rope, and the force that tries to pull the float 1 into the water increases. Furthermore, in the case of only the float 1, [resistance/displacement amount] generally increases with flow velocity due to wave resistance and the like. However, in the case of hydrofoil 3, [resistance/lift] is almost constant regardless of the flow velocity (in fact, it decreases slightly as the flow velocity increases), and especially at high speeds, [resistance/displacement] > [resistance/lift], which is advantageous. be.

The hydrofoil 3 may be installed at any position on the float 1 or the centerboard 2, but the lift and pitching moment generated by the hydrofoil 3 may be attached to the float 1.
It is necessary to install it in a position that will have little negative effect on the pitching characteristics of the product. In this embodiment, the mooring connection fitting 3a is located at the bottom of the centerboard 2 and is provided at the center of the bottom of the hydrofoil.
The position is the center of the lift of the hydrofoil 3.

The hydrofoil 3 is made of FRP, but in order to maintain the effectiveness of the hydrofoil 3, the surface is coated with Teflon coating or an anti-biofouling agent (non-toxic) to prevent biofouling and also to make it easy to clean when it adheres. I have made it possible to do so.

In order to promote the fishing reef effect, split pipes, for example, made by splitting an iron pipe along the axial direction, are installed almost vertically and in a convex shape toward the bow side as a stirring means to produce seawater stirring action by the tidal current on the centerboard 2. The installation agitates the water flow and also promotes biofouling. The split pipes 4 are installed closer to the stern than near the center in the longitudinal direction of the centerboard 2, taking care not to impair directional stability, and the mounting intervals are set so that the resistance due to the split pipes 4 is not excessive. Note that angle-shaped steel may be used as the stirring means. That is, it does not have to start from float 1, but it may be anything that extends below float 1.

A cylindrical pump chamber 5 fixed to the stern of the boat-shaped float 1 and designed to prevent seawater from entering hangs down to almost the same position as the lower end of the centerboard 2.

The fishing reef position display means provided on the deck of the boat-shaped float 1 is as follows. A storage battery compartment 7a containing storage batteries 7, 7' is provided.
A support rod 8 made of a hollow pipe is erected on the top, and a radar reflector 9 is installed on the support rod 8 so as to respond in all directions, and a night marker light 11 is installed on the radar reflector 9. The output of a solar battery 12 for power supplying a beacon light provided on the bow side deck of a ship-shaped float 1 is wired so as to be stored in a storage battery 7, and the beacon light 11 is turned on at night by wiring that passes from the storage battery 7 through a support rod 8. The night marker light 11 is controlled based on a signal from a light sensor, which turns on electricity when it gets dark outside and turns off the electricity when it gets bright outside. The solar cell 12 and the storage battery 7 have a capacity that will not affect the function and performance of the night marker light 11 even if cloudy weather continues for one month.

Inside the pump chamber 5 is a pump 13 for pumping up deep water.
is installed, and the upper end of a deep water pumping hose 14, which is inserted into the pump chamber 5 in a sealed manner, is connected to its suction port, and the discharge port of the pump 13 is connected to the upper end of a deep water pumping hose 14, which is inserted near the bottom of the boat-shaped float, along the centerboard 2, toward the bow. Two discharge pipes 15 extending into the seawater near the bow are connected. The discharge pipe 15 is supported by penetrating near both sides of the split pipe 4, and is fixed by a bracket 2b fixed to the centerboard 2 near the bow of the boat-shaped float 1. The opening of the discharge pipe 15 is provided with a nozzle 16 that opens toward the stern side so as to suck out deep water from the discharge pipe 15 by utilizing the negative pressure generated downstream by the tidal current. In this embodiment, the nozzle 16 is directed downward, and its mouth is cut obliquely toward the rear.

As shown in Figure 6, the deep water pumping hose 14
is installed to reach a water depth of approximately 200 m, and a spindle-shaped weight 17 with a vertical tail fin 17a and a horizontal tail fin 17b at its lower end and whose head always faces the tidal current is rotatably attached to the vertical axis. The suction port of the hose 14 is open in the direction toward the tidal current.

The driving motor of the deep water pump 13 is an electric motor, which is integrated into the pump 13, and is a submersible motor pump that can be used on land.For example, a turpin pump has an open front impeller and a suction end wall. Even when the pump is stopped, there is communication between the suction port and the discharge port, such as a vortex pump with a space between the pump and the pump. The electric motor is connected to one end of an electric wire placed through the upper part of the pump room 5 in a sealed manner, and the other end of the electric wire is connected to solar cells 18 arranged on the deck for powering the deep water pump. .

Pump 13 of electric power obtained from the solar cell 18
Surplus electricity other than that required for operation is stored in battery compartment 7.
The storage battery 7' installed in a is charged and used when solar energy is weak. The pump 13 is controlled by a light sensor so that it is operated during the day when photosynthesis is active and stopped at night. At night or when there is no electricity for pump operation, the amount of deep water pumped up is small, but the deep water is pumped up by suction by the negative pressure of the nozzle 16.

Pumping up deep water increases and promotes the growth of organisms in the lower part of the float 1 and on the surface of the centerboard 2, and in the vicinity.Furthermore, by dispersing nutrients to the rear of the floating fishing reef, areas with high density of plankton increase. This forms a fish ladder and has a positive effect on attracting fish.

Note that ropes, artificial algae, etc. may be attached behind and around the float 1 to enhance the fishing reef effect (not shown).

FIG. 6 is a side view showing the mooring of the floating fishing reef body of FIG. 1. One end of the shackle 21, 21 connected to each other is connected to a hole in the mooring connection metal 3a below the float 1 floating on the sea 20, and the other end of the shackle 21, 21 is connected to each other via a swivel 22. It is connected to one end of the shackle 23, 23. The swivel 22 allows shafts 21 and 23 attached to both ends to rotate about a vertical axis, and absorbs twisting between the mooring rope and the floating body. One end of a rope 24 is connected to the other ends of the shackle 23, 23, and the other end of the rope 24 is connected to one end of a rope 26 via mutually connected shackle 25, 25. The other end of the rope 26 is connected to one end of a rope 28 via a ring 27. There is a short rope 29 in the middle of the rope 28.
A float 29 is provided via a. The other end of the rope 28 is fixed to one end of a chain 37 which is connected via a shackle 36 to an anchor 35 placed on the seabed 34 via mutually connected shackle 31, 31, swivel 32, and shackle 33.

The floating fishing reef configured as described above has a pump 13,
Deep water pumping hose 1 of deep water pumping device
4. The discharge piping 15, the power supply for the nozzle 16 and the pump 13, and the pump chamber 5 may or may not be provided.

For example, centerboard 2 is 1.5m below sea level 20,
Since it is large with a total length of about 4 meters, it is large enough to attract fish in a wide range of sea areas. In particular, the effect becomes greater when living organisms attach.

When there is a tidal current, the split pipe 4 generates a vortex on its downstream side to agitate the seawater and enhance the effect of attracting fish.

Although the boat-shaped float 1 is subjected to resistance due to the current, the resistance of the float 1 itself is small because it is boat-shaped. Because of the centerboard 2, the float 1 always has its bow upright, providing directional stability. The mooring device tries to sink the float 1 due to resistance from the tidal current, but this force is canceled by the increased lift of the hydrofoils 3, so the float 1 does not sink.

When equipped with a deep water pumping device, the pump 1 is powered by the power generated by the solar cell 18 for powering the deep water pump or by the storage battery 7' storing the power.
3 is driven, deep water is pumped up by a deep water pumping hose 14, sent through a discharge pipe 15, and blown out from a nozzle 16 downward. This deep water contains nutrients and is dispersed downstream by the current, creating an area with a high density of plankton, which forms a fishway and actively attracts fish, as described above. In addition to the fish attracting effect of the center board 2, split pipe 4, etc., the fish attracting effect is further enhanced.

Although the pump 13 for pumping up deep water is stopped at night, when there is a certain level of tidal current, the tip of the nozzle 16 is shaped to have an ejector effect, and this suction head and the deep water pumping hose 1
The deep water pumping hose 14 and pump 1 are stopped due to the booster effect of the tidal flow at the suction port 4.
3. Deep water can be discharged from the nozzle 16 through the discharge pipe 15.

[Effect of idea]

This invention is based on a floating fishing reef that is moored by a rope connected to an anchor sunk on the seabed and is equipped with a means to enhance the fishing reef effect. a centerboard of the same size, a hydrofoil attached to the centerboard to increase buoyancy in response to an increase in the flow velocity of the tidal current, and a seawater agitation means extending downward from the float that produces a seawater agitation effect due to the tidal current. (1) Since the float always stands with its bow facing the tidal current, there is no possibility of it being overturned by the tidal current, and the force that tries to sink the float is small.

(2) The presence of hydrofoils prevents the float from sinking by resisting forces that try to sink it.

(3) The centerboard has a great effect on attracting fish.

(4) Split pipes greatly enhance the fish-attracting effect.

[Brief explanation of the drawing]

1 to 5 show a part of the six-sided view of the embodiment of the present invention, FIG. 1 is a side view, FIG. 2 is a plan view,
FIG. 3 is a bottom view, FIG. 4 is a front view, and FIG. 5 is a rear view. FIG. 6 is a side view showing the mooring of the floating fishing reef body shown in FIG. 1, FIG. 7 is a perspective view of the floating fishing reef, and FIG. 8 is a front view of the conventional example. 1... Ship-shaped float, 2... Center board,
2a... Leading edge, 2b... Bracket, 3... Hydrofoil, 3a... Connection fitting, 4... Split pipe, 5...
...Pump room, 7, 7'...Storage battery, 7a...Battery room, 8...Support rod, 9...Radar reflector, 11...Night marker light, 12...Solar battery for power source for marker light, 13... Deep water pump, 1
4... Deep water pumping hose, 15... Discharge piping, 16... Nozzle, 17... Weight, 18... Solar cell for deep water pump power source, 20... Offshore, 21... Shackle, 22... Swivel, 2
3...Shackle, 24...Rope, 25...Shackle, 26...Rope, 27...Ring, 28
... Rope, 29 ... Float, 29a ... Short rope, 31 ... Shackle, 32 ... Swivel, 3
3...Shackle, 34...Seafloor, 35...Anchor, 36...Shockle, 37...Chain,
41...Floating body, 42...Mast, 43...Radar reflector, 44...Lantern, 45...Solar cell, 46...Weight, 47...Mooring ring, 48
...Water pump hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A floating fishing reef that is moored by a rope connected to an anchor sunk on the seabed and equipped with means to enhance the fishing reef effect, including a boat-shaped float that floats above the sea surface and a boat-shaped float that is attached to the bottom of the float. A centerboard attached to the centerboard that is large enough to create a fishing reef effect, a hydrofoil attached to the centerboard to increase buoyancy in response to the increase in tidal current speed, and a float below the float that creates seawater agitation due to the tidal current. A floating fishing reef equipped with a stirring means for extending seawater. 2. The floating fishing reef according to claim 1, wherein the seawater stirring means are arranged in a line in the longitudinal direction on both sides of the centerboard and have a downwardly extending cross section that is convex toward the bow side.