JPS62294022A - Mooring apparatus of bottom net for set net - 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] 3. Detailed Description of the Invention [Technical Field] The present invention is used in a fixed net, which is placed under the box net and used to generate floating and sinking force to turn the box net into a hoisting net. This invention relates to a mooring device for bedding nets.

[Conventional technology]

Fixed nets used for catching fish generally consist of a fence net that blocks the swimming path of fish, a corral net that forms a playing field for fish that enter along the fence, and a net that allows the fish in the playing field to be naturally chased. It consists of a box net at the bottom and a funnel net (or wire net) with a bottom that extends from the inside of the playground to the F5 net.

The box net is installed so that it can be raised and lowered, and fish are driven into the box net, and the fish that are driven into the box net are finally captured by raising the net and collecting the fish.

This box net hoisting work involves lifting the entrance side (funnel net side) of the box net to the water surface using the work boat's winch, then grasping the bottom net of the box net and moving the work boat forward toward the tip of the box net while bottoming out. The method used was to raise the net one by one to the surface of the water and finally collect the fish at the tip of the box net.

However, such a procedure has the problem that it takes a lot of effort and time to raise the box net to the water surface.

Therefore, as a method to solve this problem, a method of raising the net using a net has been proposed.

In this lifting phase method, the bed f'f with floating and sinking bodies attached is
4 is placed below the box net, and when lifting the net, gas (compressed air, etc.) is supplied into the floating body to float the bedding net, and the box net is levitated in accordance with the floating of the bedding net, On the other hand, a method is adopted in which the gas in the floating and sinking bodies is exhausted, the net is allowed to settle, and the net is returned to a predetermined position in the water in response to this.

Conventionally, as a device for mooring this bedding net in a vertically movable manner, a ring connected to the bedding net is engaged with a guide lobe hanging into the water from the side rope of the box net or its float.
A device was used to hold the net so that it could move up and down at a position overlapping the box net.

[Problem that the invention seeks to solve]

However, in the above-mentioned net mooring device, a ring is provided near the box net that moves up and down along the guide rope, so the net may get caught in this ring or become tangled with the guide rope. There was a problem that the floating and sinking of the bedding net became uneven and caused damage to the net.

There was also the problem that the position of the nets would shift due to the effects of tidal currents, causing some of the box nets to not be lifted, making it difficult to catch fish.

Another drawback was that the structure of the net mooring system was complicated.

〔the purpose〕

It is an object of the present invention to provide a mooring device for a fixed net that can solve the problems of the prior art, has a simple structure, allows the net to rise and fall smoothly, and prevents the net from shifting. It is to provide.

(Means for Achieving the Object) The present invention provides a net that is placed under a box net into which fish are driven, and generates a buoyant force and a sinking force by supplying and exhausting gas, and is used for hoisting the box net. In the stationary net provided with the present invention, the above object is achieved by a mooring device for a bed net that connects the middle of the mooring rope of the box net with the bed net with a rope.

〔Example〕

The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a perspective view of a stationary net provided with a box net according to the present invention, and FIG. 2 is a perspective view of a box net for a stationary net according to an embodiment of the present invention.

In FIG. 1, a fixed net 10 includes a fence 11 that blocks the swimming path of fish, a fence 13 that is continuous with the fence and forms a playground 12 inside, and is adjacent to the playground and communicated through a narrow passage. It is composed of a bottomed box net 14 and a funnel net (or wire mesh) 15 installed from the playground 12 into the box net 14 with an upward slope.

The fence net 11 and the fence net 13 are held in an upright position as shown in the figure by a plurality of floats 16 connected to their upper edges, and are held in a predetermined shape by anchors 18 connected to each float 16 via ropes 17. and installed in position.

In FIG. 2, a float 19 is placed around the box net 14.
A side rope 20 with a side rope 20 is installed in a rectangular shape. This side rope 20 has a mooring rope 21 at its corner.
and is held in place by connecting the anchors 22.

Floats 23 are connected to the upper edge of the box net 14 at predetermined intervals, and the upper edge is held near the water surface.

Furthermore, mooring ropes 24 extending outward across the side ropes 20 are coupled to positions at predetermined intervals on the upper edge of the box 11114. A float 25 is provided in the middle of each mooring rope 24, and the tip end thereof is connected to an anchor 26.

The bottom surface 27 of the illustrated box net 14 is provided with a slope 28 that slopes toward the water surface (upward) toward the fish driving direction A.

However, a frame member 40 that floats and sinks by supplying and exhausting gas is provided at the tip of the fish-driving direction of the box net 14 into which the fish are driven, that is, at the fish-collecting portion on the opposite side of the inlet. By supplying air (such as air) and levitation, an enclosure-like landing section (or distillation section) partitioned off from the inside of the box net 14 is formed on the water surface.

In FIGS. 1 and 2, a rectangular bed net 29 having a larger area than the box net (bottom surface) 27 is located below the box net 14.
is located.

This floor I! The i ¥29 is used for hoisting the box net 14, and a plurality of (four in the illustrated example) floating and sinking bodies 30 extending in the vertical direction are attached to the net.

The tip end side of the net 14 (fish collecting side opposite to the entrance) is passed through an upper pulley 31 attached to the side rope 2o for fixing the box 1M14 and a lower pulley 33 provided on the anchor part 32. It is supported by a stretched rope 34 in a vertically movable manner at a fixed position. The mooring ropes 34 are arranged at predetermined intervals on the tip side of the netting 29, and each rope 34
Both ends of 4 are the edges of the net 29 (in the illustrated example, the floating body 3o
end).

In addition, in the illustrated example, each upper pulley 31 is attached to the side rope 20 for supporting the box net 14, but if the upper pulley is in a position where it can be installed near the water surface, it will be attached to the mooring rope 20 of the box net 14.
It is also possible to attach using the mooring lobes 21 at the corners or the upper edge of the box net 14 itself.

Said floor jJi! The left and right sides of the net 29 are moored by a rope 50 that connects the middle of the mooring rope 24 of the box net 14 to the net.

In the illustrated example, both ends of the bottom net 29 are moored by ropes 50 connected to the middle of the mooring ropes 21 at the corners of the side lobes 200.

Further, each of the ropes 50 is connected at a plurality of positions at predetermined intervals along both side edge portions of the netting 29 (in the illustrated example, the floating bodies 30 on both sides).

Note that the net 29 is not directly related to catching fish, and its mesh size and thickness can be freely selected separately from the box net 14 and the like.

An air supply/exhaust hose 35 for supplying and discharging gas (compressed air, etc.) to and from the floating body 30 is connected to the end of the floating body 30 on the population side of the box net 14.

This supply/exhaust hose 35 extends to an air operation ship 36 on the water surface, and is connected to a gas supply source such as a compressor on the ship via a pulp, and through this valve, the floating body 30
It is configured to provide air supply and exhaust to the

Each floating body 30 is formed of a flexible hollow body made of rubber or plastic, for example, and generates a floating force by supplying air and a sinking force by exhausting air.

That is, the bedding net 29 and the floating body 30 constitute a hoisting device for the box net 14, and by supplying air to the flotation body 30 and making it float, the box net 14 is hoisted through the bedding net 29. By evacuating the floating body 30 and allowing it to settle, the net 29 can be seated and the box net 14 can be returned to its use state.

The frame member 40 provided in the fish collecting section is also formed of a flexible hollow body made of rubber or plastic, for example, as in the case of the floating body 30, and floats to the water surface by supplying air, and the box net 1
4 is formed into an enclosure-like (fish-like) landing section partitioned from the inside, and is configured to be immersed in water by exhaust air and the partition inside the box net 14 is removed.

FIG. 3 is a sectional view illustrating a state in which the net 29 is moored by the rope 50.

In FIG. 3, the rope 50 has one end connected to the box net 14.
midway C of the mooring rope 21 that supports the mooring rope 24 or the corner of the side rope 20 (normally,
24.Anchor 2 at approximately the midpoint of 21 or below
6.22), and the other end is connected to the edge of the net 29 (in the illustrated example, the floating body 30).

In other words, the mooring rope 50 with lay #M29 is connected to the box IM14.
It is tensioned using anchors 22 and 26 for mooring.

When the net 29 is lowered (seated) and the box net 14 is in use, the rope 50 for mooring the net 29 is at the position indicated by line X, as shown by the solid line in FIG.

When air is supplied to the floating body 30 and the net is lifted, the rope 50 is connected to the mooring rope 24 (or 21
) The netting net 29 is guided upward at a substantially fixed position while drawing an arc as shown by two-dot chain lines Y and Z with the connecting portion C as the center.

When installing the box net 14 in water, the floating body 30 is evacuated and the bottom net 29 is allowed to settle. Even when the net 29 sinks, the rope 50 guides the net 29 downward in a substantially fixed position while drawing an arc as shown by the two-dot chain line around the connection point C.

Next, with reference to FIGS. 4(A) to 4(C), the operation of frying the box net 14 described above will be explained.

When pulling up the box net 14, the air operation boat 36 and the capture boat 41 are placed above the box net, and the air supply and exhaust hose 3
5 and the tip of an air supply/exhaust hose (not shown) connected to the frame member 40 is connected to a gas supply source such as a compressor or an air cylinder on an air-operated ship via a valve, so that gas can be supplied.

After that, □First, air supply into each floating body 30 of the bed net 29 is started.

The capture boat 41 is located above the water surface within the box net 14 as shown in the figure.

FIG. 4(A) to FIG. 4(C) schematically show a method of chasing fish using a fishing net.

When gas is supplied into the floating body 30, the floating body 30 which has been sinking moves to the gas supply side (the box net 14) together with the bedding net 29 in the order shown in FIGS. 4(A) to 4(C). Accordingly, the box net 14 is pushed up from the bottom surface on the entrance side and is lifted up.

FIG. 4(A) shows the initial state of floating body 30, in which buoyancy is not yet acting on box net 14.

When the floating body 30 further rises to the surface, the inlet side of the box net 14 is pushed up and the outlet of the funnel net 15 is lifted, as shown in FIG. 4(B), and the fish in the box net 14 are unable to escape. The fish in the box net 14 are gradually driven toward the tip (fish collecting section), that is, the frame member 40 that can float and sink.

When the hoisting net of the box net 14 reaches its final stage and the fish passes through the frame member 40 and enters the area where the landing section (retention section) is formed at the tip of the box net, air is released as shown in FIG. 4(C). Gas is supplied from the operation vessel 36 into the frame member 40 through an air supply/exhaust hose (not shown), and the frame member 40 is floated to form an enclosure-shaped landing section 42 partitioned off from the inside of the box net 14. Place the fish in the detention (N#) state.

Next, the inside of the floating body 30 is evacuated through the supply/exhaust hose 35, and the netting 29 is lowered through an operation substantially reverse to that described above, and the box netting 14 is returned to the installed state shown in FIGS. 1 and 2.

In this case, the frame member 40 is left in the floating state as shown in FIG.
Keep it inside.

Next, when a certain period of time has elapsed and a new fish has been driven into the box 1114, air is supplied to the floating body 30 and the box net 14 is hoisted again.

When the net moves forward and fish are collected near the landing section 42, the frame member 40 is evacuated and the frame member is once lowered to drive all the fish, including new fish, into the area where the landing section 42 is formed; Air is again supplied to the rear frame member 40 to form an enclosure-like landing section 42, and all the fish are kept there.

Thereafter, fish are retained in the landing section 42 by repeating the hoisting net operation described above an appropriate number of times, and after repeating the hoisting net a desired number of times, the fishing boat 41 collects the fish retained within the landing section 42 and transports them on board. unload the water to

According to the embodiment described above, the mooring row 12 of the box net 14
By using the rope 50 connected in the middle of 4, and the rope 50 connected in the middle of the mooring rope 21 that supports the corner of the side rope 20 as necessary,
Since both left and right sides of the netting 29 are supported in a predetermined position so as to be able to move up and down, a simple structure using the existing anchors 26.2'2 can be used to secure the cough! 1ikli129 can be moored evenly during the raising of the net, and therefore the net can be smoothly and reliably floated and sunk (landed on the bottom) without shifting or loosening.

In addition, the tip side of the net 29 is connected to a pulley 3 installed near the water surface.
1 and a pulley 33 provided on the anchor part 32, and by connecting both sides of the rope to the edge of the netting 29, it is supported vertically in a substantially fixed position. The tip end is also moored so that it can float up and down smoothly without shifting or loosening.

In this way, a mooring device for the net IM 29 was obtained, in which the net 29 can be smoothly moved up and down in a fixed position, and the workability of the box net 14 when hoisting the net can be greatly improved.

FIG. 5 shows a mooring device for a set net net according to another embodiment of the present invention.

In this embodiment, not only the left and right sides of the net 29 but also the
Also on the tip side of the net, the mooring row 124 of the box net 14
Using the mooring lobes 21 of the side lobes 20, a lobe 50 is provided which is connected between the middle of these mooring rows 124, 21 and the edge of the bedding net 29.

That is, in this embodiment, the entire mooring device of the bedding net 29 is a mooring row 1 using existing anchors 26 and 22.
50, it is supported in a fixed position so as to be movable up and down.

The other parts of this embodiment have substantially the same structure as the case of FIG. 2, and corresponding parts are indicated by the same numbers and their explanations will be omitted.

The embodiment shown in FIG. 5 also achieved the same effects as the embodiments described in FIGS. 1 to 3.

〔effect〕

As is clear from the above description, according to the present invention, a mooring device for a fixed net is provided which has a simple structure, allows the net to rise and fall smoothly, and prevents the net from shifting or loosening. It will be done.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a set net equipped with a mooring device for a set net according to the present invention, FIG. 2 is a perspective view showing a mooring device for a set net according to an embodiment of the present invention, and FIG. 4(A) to 4(
C) is a schematic explanatory view showing the procedure for hoisting the box net shown in FIG. 2, and FIG. 5 is a perspective view showing a mooring device for a set net net according to another embodiment of the present invention. 10...～・・−・−・Fixed net, 14−・−・−・・
・Box netting, 20------・---・Side robe, 21−・
・・・・−・Mooring rope, 22−・・−・−Anchor, 24−・−−−m−−−・−Mooring rope, 26・−・
・・・・−・Anchor, 29−−−−−・−・・Laying net, 30−・・・・・・・・・・・Floating body, 50−・−・～・
- Lobe, C-・------ Lobe joint.

Claims (1)

[Claims] (1) In a fixed net equipped with a bedding net that is placed under the box net into which fish are driven and that generates buoyancy and sinking force by supplying and exhausting gas and is used for hoisting the box net, A mooring device for a fixed net net, characterized in that a part of the mooring rope and the net are connected by a rope.