JPS59118028A - Extensible fishing 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 [Field of the Invention] The present invention relates to a bottom net for fishing nets used in aquaculture cage fishing nets and the like.

[Prior art]

Traditionally, fish nets have been made using a single piece of net, with a number of floats installed at the upper end of the net to float on the sea surface, and a weight installed at the lower end to hold the floats and sinkers. A fish cage fishing net was formed, which consisted of a wall structure formed by a net and a bottom net formed by a separation.

However, as mentioned above, in this type of fish tank fishing net, since the bottom net is just a single piece of net, waves, wave height, currents, and raging typhoons can cause the bottom net to become stretched and break. .

[Purpose of the invention]

The present invention has been made in view of these conventional drawbacks.
The purpose is to provide a craft net that can withstand water flow and water pressure caused by waves, wave height, tides, and raging typhoons.

[Summary of the invention]

The present invention provides slack in the bottom net, and a float (buoyancy) is installed on the bottom net, or a float (buoyancy) and a weight (gravity) are installed to form the bottom net into a bellows shape. The above purpose is achieved by making it expandable.

The principle of the bellows system used in the present invention will be explained with reference to FIG.

The bellows is made up of buoyancy and gravity. When the buoyancy of a bellows is increased, the gravitational force is absorbed by the buoyancy, and when the gravitational force is increased, the buoyancy is absorbed by the gravitational force.

FIGS. 1(a) and 1(b) show a state in which the waves are relatively calm and the buoyancy and gravity are in balance, forming a bellows. FIG. 1(a) shows the relationship between a float A forming a bellows (buoyancy) and a weight B surrounding the float A (gravity). fo is the buoyancy of float A. '01'"02 is the gravitational force of @B on float A. In the state where the bellows is formed, the relationship between f. and g.11902 is f.=g(H
+ go2 p fo > go r fo > 9 (42
It becomes.

FIG. 1(b) shows the relationship between a weight B (gravity) forming a bellows and a float A surrounding the weight B (buoyancy).

gl is the gravity of @B. ,fl, is float A's @B
It is a buoyant force that extends to In the state where a bellows is formed, the relationship between gx and f and f is g+=f1°+1
0 11 fl 12g1 > fl. The relationship is 2g1>fll.

The relationship between the float (buoyant force) and the weight (gravity) must satisfy the above relationship, but in reality, the relationship between the float and the gravity exerted on the float is based on the relationship between the weight, the net, and the reinforcing rope. The buoyancy of the float is set after considering these factors, such as things attached to the net.

[Structure of the invention]

Embodiments of the present invention will be described in detail below with reference to FIGS. 2 to 9.

FIG. 2 is a perspective view showing a first embodiment of the fish cage fishing net according to the present invention, and FIG. 3 is a plan view illustrating the operation of the first embodiment. 1 is fish tank fishing net, wall 2 and bottom net 3
It is formed by. The fish cage fishing net 1 is provided with an elongated main loaf 4 at one end of the net, and the elongated main loaf 4
Large floats 5 are set up at equal intervals on the sea surface, and the main loaf 4 near the large floats 5 or the vertical reinforcing rope (6 described later) is attached to the outside using an anchor row f (15 described later). By pulling it in all directions, it is formed into a rectangular shape. Further, each of the large floats 5 is provided with a vertically reinforcing four-gage 6, and a weight 7 is provided at the lower end of the vertically reinforcing four-gage 6 to form a wall assembly 2. In addition, a weight 81.83 and a float 82.84 are provided in the middle of the vertical reinforcement loaf 6, and the weight 81 (gravity), the float 82 (buoyancy), and the weight 83 (gravity) form a set of bellows. 9, a weight 83 (gravity), a float 84 (buoyancy), and a weight 7
(Gravity) forms one set of bellows 9' on the wall assembly 2.

The weight 7 or the vertical reinforcing loaf "6" near the weight 7 is provided with a bottom reinforcing loaf 10 diagonally, and the bottom reinforcing loaf 10, the weight 7 and the bottom net 3 are formed. Further, a float 12 is provided near the intersection 11 of the bottom reinforcing rogue 10, and the float 12 (buoyant force) and the weight 7 (gravity) surrounding the float 12 are combined to form a set of bellows-shaped square pyramids. A bottom net 3 is formed.In some cases, a central reinforcing loaf 13 may be further provided on the float 12 to form a bellows in cooperation with the float 12 and the float 1/. 12
When adjusting the strength of the bellows formed on the bottom net 3, by providing the buoyancy of the float 12' at sea)
The strength of the bellows can be easily adjusted even at sea.

Further, loafs 13 provided diagonally on the large float 5 serve to reinforce the cage fishing net 1 from the inside.

The fish cage fishing net 1 having the above structure is pulled in all directions around the large float 5 by the outer tension anchor rogue 15, as shown in FIG. Since it is fixed to an anchor 16 installed in the sea, the fish cage fishing net 1 maintains its shape and is positioned on the sea. Reference numeral 17 denotes a float provided in the middle of the outer tension anchor row f15), and by the buoyancy of the float 17, the outer extension anchor rogue 15 pulls the fish cage fishing net 1 outward.

Figure 3 (b) shows a large wave washing over the fish tank fishing net 1.
This figure shows a state in which the bottom net 3 is pushed upward by the wave height, and in such a state, the bottom net 3 extends downward from the weight 7, thereby alleviating water pressure and water flow. are doing.

The fixing method and function of the fish cage fishing net 1 shown in FIG. 3 are the same as those of other embodiments described below, and the water pressure is alleviated to a different degree by changing the shape of the bottom net 3, but it is the same. The fixing method and the like will be omitted in the following embodiments because the method provides the following effects.

FIG. 4 is a perspective view illustrating a second embodiment of the fish cage fishing net 1. In this embodiment, the weight 7 is further equipped with a horizontal reinforcing rod 18.
By surrounding the bottom net 3 in a square shape, the m net 3 is made strong. In addition to the float 12 provided at the intersection 11 of the bottom reinforcement rows 10, there is also a float 19 smaller than the float 12.
When a plurality of these are provided on the floor reinforcing row 10, a pair of bellows-shaped bottom nets 3 curved upward from K is formed, and a load is prevented from being applied only to the portion of the bottom net 3 where the float 12 is attached. . Also, depending on the situation, the float 12 may be omitted. Naokabema 2
This shows an example in which the bellows 9 are not provided.

FIG. 5 is a perspective view illustrating a third embodiment of the fish tank fishing net 1.
A bellows 301 is formed by a row of floats (buoyant force) of 0 and a weight 21 (gravity).

The float row consisting of the float 20 includes a bottom reinforcing rogue 231 that connects the weight 7 and the float 20 and a bottom reinforcing row 23 that connects the float 20.
2, a rectangular shape is formed, a float 20, and a weight 2.
1 is connected by a floor reinforcing rod 233, and the center part of the bottom net 3 hangs down in the shape of a square pyramid.

The third embodiment having the above-mentioned configuration is more flexible than the first embodiment in FIG.

FIG. 6 is a perspective view illustrating a fourth embodiment of the fish cage fishing net 1, which is a further development of the third embodiment shown in FIG.

That is, the first bellows layer 301 is formed by the separation (gravity) of the weight 7, the float row (buoyancy) of the float 20, and the separation (gravity) of the weight 21, and the float 22 (buoyancy). ) and a second bellows layer 302 formed by the movement (gravity) of the weight 21 that recesses the float 22, are formed on the bottom net 3. It is formed into a rectangular shape by a floor reinforcing row 233 connecting the floating ore float 20 made of a weight 21 and the weight 21, and a floor reinforcing row 234 connecting the weight 21. In addition, the center part of the bottom net 3 is
Connect the weight 21 and the float 22 with the floor reinforcing rod 235.
It is raised in the shape of a square pyramid.

FIG. 7 is a perspective view illustrating a fifth embodiment of the fish tank fishing net 1. A separation mechanism such as @24 is provided in the middle of the bottom net 3, and a float 2 is provided in the middle of the bottom net 3.
5 (buoyancy) and the separation (gravity) of the weight 24 surrounding the float 25, a bellows 303 raised in the shape of a square pyramid is formed.

In addition, the separation from the weight 24 is a bottom reinforcement row 261 that connects the weight 7 and the weight 24, and a bottom reinforcement row f262 that connects the weights 24.
They form a rectangular row. Also, 263 is weight 2
Bottom reinforcement row connecting 4 and float 25! It is.

According to the above structure, the bellows 303 formed on the bottom M43 expands and contracts with the weight 24 as the starting point.If the starting point of the bellows 303's expansion and contraction is lowered, the fish cultured in the fish tank fishing net 1, etc. This prevents the bottom net 3 from being damaged by expansion and contraction.

In this embodiment, a weight 27 (gravity) and a float 28 (float)
This shows an example in which a set of bellows 9 made of a weight 7 (gravity) is used between the walls 2.

FIG. 8 is a perspective view illustrating a sixth embodiment of the fish cage fishing net 1. This embodiment is a combination of the fifth embodiment shown in FIG. 7 and the third embodiment shown in FIG. 5. That is, the bottom net 3 is formed with a separation (gravity) like the weight 24, a row of floats (buoyancy) like the float 27, and a bellows 304 like the weight 28 (gravity), and the bellows 304 acts as a weight. 24 as a starting point (in the third embodiment of FIG. 5, the bottom net 3 expands and contracts starting from the weight 7). Furthermore, the float row consisting of the floats 27 has a floor reinforcement row 26 that connects the weight 24 and the floats 27.
4 and a bottom reinforcing rogue 265 that connects the floats 27, forming a rectangular shape. Also, the weight 28 is bottom reinforcement rono 26
6 is connected to the float 27, forming the apex of an inverted square pyramid.

By having the structure as described above, this embodiment maintains the function of preventing killing of fish as in the fifth embodiment shown in FIG. It's tight.

FIG. 9 is a perspective view illustrating a seventh embodiment of the fish cage fishing net 1. This embodiment is a further development of the sixth embodiment shown in FIG. 8, and shows a bottom net 3 having three stages of bellows 305°, 06.307.

The bottom net 3 is a main bottom reinforcing rope 30 that connects the weights 7 and 29.
The main bottom reinforcing rope 3 is formed into an inverted rectangular shape.
In the middle of 0, weights 31, 33, 35 (gravity) and float 32
, 34 and 36 (buoyancy) are provided alternately, and between the weights 31 and 3
3, between the weights 35, between the floats 32, between the floats 34, and between the floats 36 with bottom reinforcing ropes 361, 363, 365, 362, respectively.
364.

366, three stages of bellows 305, 306, and 307 surrounding the bottom net 3 in a rectangular shape are formed.

The bottom net 3 having the above structure is formed in the shape of an inverted pyramid, so there is little water resistance, and since bellows are formed in several stages, the bottom net 3 has very good elasticity. .

In addition, in the wall assembly 2 of this embodiment, the vertical reinforcement loaf 6 has a weight of 37.39 mm.
, 41.43 (gravity) and float 38° 40.42.44
This figure shows a wall assembly with an inverted bellows formed by providing (buoyant force) alternately and linearly. In other words, when the height of the wave decreases due to the vertical movement of the waves, the weight 37.39.4
Due to the drooping force of 1.43 (gravity), floats 38, 40, 42
Four sets of bellows are formed with the apex at 44 degrees.

[Modified example of the invention]

As mentioned above, seven types of embodiments of the fish cage fishing net 1 using the present invention have been described, but the present invention is not limited to these, and various combinations may be made, and the number of bellows layers may be increased.

It goes without saying that the shape need not be limited to a rectangle. Incidentally, the bellows method shown in the tenth open plan view may be used for the wall assembly 2, and it becomes possible to easily construct the bellows at sea level. That is, as shown in FIG. 1O(a), horizontal reinforcing ropes 181 and 182 are further provided between the stretched main rope 4 and the horizontal reinforcing loaf 18, and the horizontal reinforcing ropes 181 and 182 are connected to the intersection 61 of the horizontal reinforcing loaf 181 and the vertical reinforcing loaf ``6''. The intersection point 6 between the main loaf °4 connected with the loaf f45 and further provided with a weight 46 on the loaf f45, the horizontal reinforcing loaf 182 and the vertical reinforcing loaf 766
It is constructed by connecting a loaf 47 to the loaf 47 and installing a float 48 at the tip of the loaf f47. (buoyancy) and a weight 46 (gravity) to form a bellows. 5 is a large float provided on the extended main rogue 4 and floating on the sea surface, as in the previous embodiment.

〔Effect of the invention〕

As described above, according to the configuration of the embodiment of the present invention, waves, wave height,
It is possible to provide a stretchable bottom net that can withstand tidal currents and typhoon temperature sensitivity, and to protect fishing grounds by preventing the bottom net from breaking due to wave force and water pressure.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram explaining the principle of the bellows method.
Figures 9 to 9 illustrate embodiments of the bottom net of a fish cage fishing net using the present invention, Figure 2 is a perspective view illustrating the first embodiment, and Figure 3 shows the effect of Figure 2. FIG. 4 is a perspective view explaining the second embodiment. FIG. 5 1-1: A perspective view explaining the third embodiment. FIG. 6 is a perspective view explaining the fourth embodiment. , FIG. 7 is a perspective view illustrating the fifth embodiment, FIG. 8 is a perspective view illustrating the sixth embodiment, and FIG. 9 is a perspective view illustrating the seventh embodiment. FIG. 1O is a plan view showing an example in which a bellows structure, which can be formed at sea level with simple work, is used in a wall assembly. 1... Fishing net, 3... Bottom net, 12, 19, 20° 22.25.27, 32, 34.36... Float, 7° 21.24, 28, 29.31, 33. 35... weight,
301.302, 303, 304, 305.30630
7... Bellows. Agent Patent Attorney Book 1) Takashi Figure 4 Figure 1 Figure 5 Figure 6 Figure 1 Figure 7 Figure 8 Figure 9

Claims (3)

[Claims] (1) A bellows-type telescopic fishing net in which a float (buoyancy) is provided on the bottom net of the fish tank to form a bellows-like shape, allowing the bottom net to expand and contract. (2) A bellows-type telescopic fishing net in which a float (buoyancy) and a weight (gravity) are installed in the bottom net of the fish tank, forming a bellows-like shape to allow the bottom net to expand and contract. (3) The retractable fishing net according to claim 2, wherein floats (buoyancy) and weights (gravity) are alternately arranged in the bottom net of the fish pen in a bellows shape.