JPS62294021A - Box 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 relates to the structure of a box net for chasing fish in a fixed net and collecting the fish chased in by a hauling net to catch FfI.

[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 this fence net, and a fence net that forms a playing field for fish that enter the playing field. It consists of a box net at the bottom and a funnel net (or wire mesh) with a bottom that extends from the inside of the playground to the box 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 hoisting method using a bedding net has been proposed.

In this hoisting and horizontal method, a bedding net with floating bodies attached is placed below the box net, and when hoisting the net, gas (compressed air, etc.) is supplied into the floating body to float the bedding net, and the net is floated. The box net is brought to shore in response to the floating of the net, while when installing the box net, the gas in the floating body is exhausted and the net is settled, and the box net is placed at a predetermined position in the water. The method of doing so is adopted.

[Problem that the invention seeks to solve]

By the way, in the case of conventional box nets for fixed nets, the fish that are driven into the box net are collected by hoisting the box net and collecting them in one corner (usually the destination in the driving direction @fi+ >), and then transporting the fish into the work boat. They were captured by collecting and landing the fish.

However, with this conventional method of catching fish using fixed nets, all the fish collected must be landed each time the net is hauled out. Therefore, during the high fishing season, fish are waiting in the playing area even when the fish are being netted. If you want to operate the tM operation continuously and then land the fish in batches, or if you want to keep the fish alive (farming) until you can land them in batches due to poor fishing and the catch is too small in one fishing trip. This type of operation was not possible and was inconvenient.

〔the purpose〕

It is an object of the present invention to provide a box net for a fixed net that can solve the problems of the prior art, ensure net-hauling work in a short time, can be operated by a small number of people, and can improve the efficiency of catching fish. It is.

[Means to achieve the purpose]

The present invention provides a box net for a fixed net, in which a frame body that floats and sinks by supplying and exhausting gas is provided at the leading end in the fish driving direction of the box net, into which fish are driven, and a cage-like landing section is formed by floating the frame body. The structure achieves the above objectives.

〔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 is connected to a fence 11 that blocks the swimming path of fish, a fence 13 that is continuous with the cough net and forms a playing field 12 inside, and is adjacent to the playing field and communicated through a narrow passage. The bottomed box net 14 and the inside of the box net 14 from the playground 12 -
, and a funnel net (or wire net) 15 installed 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 connected to positions at predetermined intervals on the upper edge of the box net 14. Each mooring row 124 is provided with a float 25 in the middle thereof, and the tip thereof is connected to an anchor 26.
is combined with

Box 1 shown? ] 14 is provided with a slope 28 that slopes toward the water surface (upward) in the fish driving direction A.

FIGS. 3 and 4 show a plane and a side surface of the tip of the box net 14 in the direction of catching fish, that is, the fish collecting part on the opposite side from the entrance.

In FIGS. 2 to 4, a frame member 40 that rises and falls as gas is supplied and exhausted is provided at the tip of the box net 14, and gas (such as compressed air) is passed through the supply and exhaust hose 35A into the frame member 40. By supplying and floating the water, an enclosure-shaped landing section (or distillation section) 42 partitioned off from the inside of the box net 14 is formed on the water surface.

The frame member 40 is formed of a U-shaped hollow member with an open end as shown in FIG.
When air is supplied from A, it floats to the water surface as shown by the solid line in FIG. 4 to form the enclosure-like landing section 42, and when air is exhausted from the supply/exhaust hose 35A, it floats underwater as shown by the two-dot chain line in FIG. The enclosure of the landing section 42 is removed and the box net 14
It is constructed in such a way that it communicates with the inside.

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.
are placed.

This net 29 is used for lifting the box net 14, and a plurality of floating bodies 30 (four in the illustrated example) extending in the vertical direction are attached to the net.

As shown in FIG. 2, the netting 29 is stretched via an upper pulley 31 attached to the side rope 20 for fixing the box $1114 and a lower pulley 33 attached to the anchor part 32. The lobes 34 are held in a substantially fixed position overlapping the box net 14 so as to be able to move up and down.

In the illustrated example, the lobes 34 passing through the upper and lower pulleys 31 and 33 are provided at a plurality of positions around the net 29, and both ends of each rope 34 are connected to the circumference of the net 29.

Note that the net 29 is not directly related to catching fish, and its mesh size and thickness can be 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 bodies 30 is connected to the end of each of the floating bodies 30 on the artificial side of the box net 14.

This supply/exhaust hose 35 is connected to the frame 40 of FIGS. 3 and 4.
Air operation vessel 3 on the water surface with the air supply and exhaust hose 35A
6 and is connected via a valve to an onboard operation panel and a gas supply source such as a compressor, and is configured to supply and exhaust air to and from the floating body 30 and the frame 40 through this valve.

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 brought to the bottom and the box net 14 can be returned to its use state.

The frame member 40 provided in the fish collection section also has the floating body 30.
As in the case of , it is formed of a flexible hollow body made of rubber or plastic, for example, and floats to the water surface by supplying air, forming an enclosure-like (fish-like) landing section partitioned from the inside of the box net 14, It is constructed so that the partition inside the box 1M14 can be removed by submerging it into water by exhausting the air.

Next, referring to FIG. 5, the operation of hoisting the box net 14 described above will be explained.

When pulling up the box net 14, first, the air operation boat 36 and the capture boat 41 are placed above the box net 14, and the floating body 3
0 and the supply/exhaust hose 35A (Figs. 3 and 4) connected to the frame member 40. Connect to the supply source, first connect the laying net 2
Air supply into each floating body 30 of 9 is started. In addition, capture ship 4
1 is located on the water surface in box 1M14.

FIG. 5(A) to FIG. 5(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. 5(A) to 5(C). Accordingly, the box net 14 is pushed up from the bottom surface on the entrance side and is lifted.

FIG. 5(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. 5(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 net of the box net 14 reaches its final stage and the fish passes through the frame member 40 and enters the landing area (retention section) formation area at the tip of the box net, as shown in FIG. 5(C), the air Supply/exhaust hose 35A from the operating vessel 36 (Fig. 3, Fig. 4)
Gas is supplied into the frame member (40th) through the frame member 40.
are floated to form an enclosure-like landing section 42 partitioned from the inside of the box net 14, and all the fish are kept in a detention (farming) 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. 5(C), and the captured fish are kept in the enclosure-shaped landing section 42.

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

When the net moves forward and the fish are gathered 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 rod member 40 to form an enclosure-like landing section 42 in which all the fish are kept.

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 frame member 40 that floats and sinks by air supply and exhaust is provided at the tip of the box net 14, and by floating the frame member, an enclosure-shaped landing section can be formed at any time. It is now possible to temporarily store the captured fish (including M-culture), and it is now possible to operate the box net hauling operation continuously during periods of abundant fishing, making it possible to carry out the hauling net work quickly and reliably, and with a small number of people. This made it possible to improve the efficiency of catching fish.

〔effect〕

As is clear from the above description, according to the present invention, there is provided a box net for stationary nets that can carry out net-hauling operations reliably in a short time and that can improve fishing efficiency through continuous operation of collecting and capturing fish. be done.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a fixed net equipped with a box net according to the present invention, FIG. 2 is a perspective view of a box net for a set net according to an embodiment of the present invention, and FIG. 3 is a frame member of the box net of FIG. FIG. 4 is a side view of FIG. 3, and FIGS. 5(A) to 5(C) are schematic diagrams showing the procedure for lifting the box net in FIG. 2. It is an explanatory diagram. 10・−・−・・・Fixed net, 14・−・・−・・
・-・Box net, 40・-・-・-Frame member (l$ sink), 4
2・・・−１−−・・−Fish landing section, A・・・・・−・−
-Direction of driving the fish. Agent: Yasushi Ooto, Patent Attorney Figure 3 Figure 4

Claims (1)

[Claims] (1) A fixed net characterized in that a frame member that floats and sinks by supplying and exhausting gas is provided at the tip of the box net in the direction in which the fish are driven in, and an enclosure-like landing section is formed by levitating the frame member. box net.