JP6547954B2 - Ship net - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a shipping net, and more particularly, to an improvement of a shipping net that can efficiently catch marine animals of small fish species such as shirasu and Ikanago.

As a fishing method for efficiently catching marine animals of small fish species such as Shirasu and Ikanago, a sea fishing net fishing is known.
In the ship net fishery, two fishing boats called net vessels are paired to draw a net, and one fishing boat called a carrier looks for a school of fish to guide the net vessels and picks up the catch and transports it to the port Do. Thus, it operates with three fishing boats.

From the reaction situation of the fish finder, the carrier judges the condition of the shirasu and Ikanago accumulated in the net along with the guidance of the net ship, and decides the net replacement time.
Because Shirasu and Ikanago have different migration locations and swimming depths depending on the day's weather and the complex tidal current of the sea area, it is held that the carrier's experience and the guidance of the netboat based on the can hold the key that influences the daily catch. It is said. In addition, since Shirasu and Ikanago are often located near the upper layer, if the water depth to which the fish net is drawn is adjusted to be shallow, fishing will increase.
In the Osaka Bay and Harimasu, "Ikanago" fishery is operated until mid April, and "Shirasu" fishery is performed from mid April to early June and late September to early December.

  A shipping net is composed of a sleeve net, a bag net (a waist net, a fish net), and a rope. The sleeve network is attached to the left and right sides of the bagnet from the mouth of the bagnet and plays a role in centering the school of fish and driving it into the bagnet. A float and a float are attached to the upper edge of the sleeve net, a sunken is attached to the lower edge, and the mesh opening is designed to open up and down. The size of the mesh of the bagnet is smaller toward the back, and for example, the narrowest mesh is a gauze of about 2 mm, and the length of the bagnet is about 80 m. About 20m from the end of the bagnet is called "fishing" and it can be removed by a chuck. A float is connected to the sleeve net through a rope, and the depth of the sleeve net can be adjusted by changing the length of the extension and contraction of the rope. Both vessels unfold at full speed with ropes in place, and after confirming that the fishing gear sinks to the prescribed water depth, start reintroduction.

FIG. 10 shows a simple example of ship maneuvering using the fishing net fishing method. The interval between two ships in the net is about 50m, and the net time is about 45 minutes to one and a half hours, depending on the condition of the fish school, and the net speed is about 2 knots.
The collected shirasu and ikanago are collected by lifting only the bag net with the winch of the carrier without taking up the whole net, and opening and recovering the chuck of the fish catching section. After collecting the catch, re-enter the bagnet and continue revetment.

In Shirasu fishing and Ikanago fishing, the fishnet network is finer than other fishings because the target fish species are small, and in the case of the ship handling and maneuvering, a large resistance of sea water to the fishnet occurs, and the speed of shipbuilding is difficult to increase. After all, maneuvering at a high speed is extremely economical in terms of economy and competition with other fishing vessels, and fishing varies depending on how fast you can ship.
In addition, although there are differences in mesh size and length between Shirasu and Ikanago, the construction of the fish net, the floats of the sleeve net, etc. are the same. The total fishing net is longer with the Shirasu fishing tackle, which can reach 500 meters in length.

Kobe Regional Maritime Infringement Agency "Kinki fishing method and safe operation"

As a problem in the above-mentioned prior art ship nets for Shirasu and Ikanago, there is a question of how to reduce the influence of the mixture of jellyfish and marine debris existing in the fishing ground.
If the target of fishing is a small fish species such as shirasu or kanago, the mesh of each part constituting the shipping net will be correspondingly smaller. When the size of the mesh of each part becomes finer in this way, there is a problem that non-fishing objects larger than those to be caught such as jellyfish and marine debris larger than shirasu and Ikanago are mixed. The effect of jellyfish contamination is greater than that of common fish species because shiras and ikanagos live near relatively shallow water levels compared to common fish species.

Large amounts of jellyfish and marine debris, etc., in the shipping net will cause the target to be caught such as shirasu and ikanago in the net to deteriorate, and the net will become heavy and the speed of the ship will slow. Particularly in recent years, jellyfish and the like have been frequently generated in large numbers, and it has been questioned how to catch fish targets efficiently while excluding non-fish targets.
A device of the discharge section, also known as "jellyfish-less", is used to pass fish targets and prevent large non-fish targets from passing.

  However, even if such a jellyfish removal and discharge unit is provided, there is a state of being caught and staying in the net until the jellyfish is discharged, and if a large amount of jellyfish stagnates, the net becomes heavy and the speed of boating becomes slow. I will. In other words, the speed of the shipping net slows down if a large amount of jellyfish is accumulated after the entire mesh is made finer according to the target of fishing.

Therefore, while the inventor Utsu Shuji has produced fish nets for many years, in the present invention, called the "tidal release part", the coarse part of the net is daringly provided on the side part slightly forward of the trunk, and We have ensured that there is a place where it is easy for the part of the seawater once captured from the opening to slip out of the side, so that the speed of shipboarding does not decrease.
At times when a large amount of jellyfish is likely to be generated, this "tidal part" is useful, and it is possible to exert an effect of adjusting the boating speed to an appropriate speed while suppressing an increase in the load of the boating by the fishing boat.

  However, in recent years, the cycle of mass production of jellyfishes has become short, and the situation has been seen that environmental changes in fishing grounds change daily rather than long-term seasonal fluctuation of several weeks. Therefore, there may be a situation where the target fishing ground does not have many jellyfish despite the time when jellyfish tends to occur. The fishing nets targeted for Shirasu and Ikanago are as long as several hundred meters, and they can not be transported in large numbers, so it is impossible to replace them in accordance with the conditions of the fishing ground. If you use a shipping net that was adjusted with a large amount of jellyfishes in mind, the speed of shipping will be faster than expected, and the amount of seawater that escapes from the tidal part to the side will increase. There was a problem that a part of the fish escaped from the tidal part and the fishing leak increased.

  The inventor Utsu Shuji has produced fish nets for many years, and in view of the situation that the cycle of mass production of jellyfish is short and prediction of mass production is becoming difficult, adjustment of the amount of tidal volume of tidal part, and boating I noticed that there is room for improvement in speed adjustment.

  In view of the above problems, the present invention devises the structure of the "tidal section" and enables adjustment of the magnitude of the resistance received in the sea of the shipping net according to the daily environment of the fishing ground, and the shipping speed The goal is to provide a good shipping net that can dynamically adjust the

  In order to achieve the above object, a vessel net according to the present invention is a vessel net for catching fish to be caught in the sea or the seabed, and is provided between a sleeve net portion and a fish bag portion. In the trunk portion which is a mesh whose mesh size is finer than that of the marine animal to be caught, the connection portion between the trunk inlet portion serving as the connection portion with the sleeve net and the fish collecting bag portion The mesh is coarser than that of the other part in the trunk part outlet part, the trunk part net body between the trunk part inlet part and the trunk part outlet part, and a part of the side surface of the trunk part net body And a tidal drop portion for reducing the resistance generated during ship- ing and a tidal drop adjustment body for increasing or decreasing the resistance in the sea by attaching to the tidal drop portion, and the presence or absence of the tidal drop adjustment body Or adjust the size of the resistance in the sea by the mounting amount, ship It is characterized in that the allowed to adjust the speed come.

  It is preferable that the shape of the tidal opening portion be wider at the front and narrowed toward the rear. The whole net is narrowed from the sleeve net to the trunk net to the rear end because the ship is under the sea, and the shape of the tidal open part is also narrowed toward the rear and towards the rear. It is said that.

There may be multiple types of tidal volume adjusters.
The first type is the type of mesh. The tidal volume adjuster is a mesh having a mesh finer than the mesh of the tidal part, and the mesh of the tidal volume adjuster is attached to the mesh of the tidal part. In other words, by putting another net on the surface of the tidal part and making it a double net, the resistance is increased.
As a method of attaching the tidal volume adjustment body to the tidal opening portion, there is a method of tying and firmly attaching with a string (chich).

  In addition, mounting using a fastener is also possible. Attach and place one of the fasteners along the outline of the tidal part, attach and place the other of the fastener along the edge of the tidal volume adjustment body, and tighten both with the fastener for attachment .

Here, there is also a device for limiting the area to which the tidal volume adjuster is attached at the tidal part. That is, if the amount of dropout is too reduced if the entire surface of the dropout portion is covered, only a part of the dropout portion is covered by the dropout adjustment body.
As a result of various researches on which part of the tidal drop portion to which the tidal volume adjustment body is attached is effective, inventor Utsu Shuji gives priority from the center to the rear portion or the rear portion. It has been found that selecting and attaching to is effective. Tide clearance plays a role in adjusting the amount of seawater entering from the sleeve net to the trunk net, and the net discharge is large and the mesh is coarse enough to catch the target fish species, but the position of the tide is the trunk net Above all, the front is better. The whole net shape is that the diameter of the trunk is wider at the front and narrowed toward the rear, so the larger the diameter at the front, the tide that comes out is the seawater near the periphery and the seawater near the center is It is hard to come off. The smaller the diameter at the rear, the more likely the tide to exit is the escape of seawater near the center. In addition, if you begin to drain the tide backward, there is a possibility that the target fish species that has come deep into the fishnet may get away from the tide flow. If the diameter is also relatively large at the front, the target fish species will not be easily removed, and if it passes through the tidal part early, the target fish species will not be released from the trunk after that. As a result of considering these, the target fish species can not escape from the tidal part if the tidal volume adjuster is attached by preferentially selecting from the center to the rear part or the rear part as a partial region of the tidal part It is possible to adjust the tidal volume while suppressing the

  The second type is a relatively soft flat or mesh sheet type. There is a tidal volume adjustment body pocket in which the sheet body which is a tidal volume adjustment body fits in the net surface of the tidal part, and the tidal volume adjustment body which is a sheet body is attached to the tidal volume adjustment body pocket It is possible. That is, the resistance is increased by attaching the sheet body to the surface of the tide portion. Adjustments can be made easily by changing the size of the mesh and the area of the flat plate of the tidal volume adjuster inserted in the tidal volume adjuster body pocket according to the daily fishing situation.

  Further, it is also possible to divide the mesh surface of the tidal part into a plurality of areas, and provide the tidal volume adjusting body pocket for each division or part of the division. A plurality of tidal volume adjusters may be prepared, and the tidal volume adjusters may be selectively attached to the plurality of tidal volume adjuster pockets.

In order to enable mechanical meshing of the mesh, the sheet is required to be sufficiently soft, for example, soft and flexible enough to be rolled into a roll.
According to this configuration, the vessel can be folded on the boat until the vessel is thrown into the sea. The tidal gap may also be long, ranging from a few meters to a few tens of meters, and needs to be folded when transported on the ship, but it may be folded with the hard mesh or flat sheet attached Have difficulty. If the state is divided into sections as described above, the boundary of the sections can be easily folded, and the whole can be stored compactly.

  Next, in the above-described configuration, it is possible to combine a device for providing a discharge part of a non-fishing object such as jellyfish. A discharge part for non-fishing objects such as jellyfish is formed as an inner bag body slightly forward in the trunk outlet, the opening is provided over the entire cross section of the trunk, and the discharge outlet is provided on the side of the trunk net It is. The size of the mesh of the non-catch target discharge part is such that the catch target animal can pass and the catch target animal passes backward. Non-fished objects that are larger than the mesh can then be supplemented and discharged from the discharge outlet on the side of the trunk mesh.

  The fishing target of the shipping net according to the present invention is preferably a fish species including shirasu and Ikanago. Also, although it is different from the target fish species such as Shirasu and Ikanago, it is useful if economical marine organisms such as giant clams can be sorted by size in the fishing section without being expelled like jellyfish. Therefore, in the above configuration, an inner bag is provided in the fish collecting bag portion to provide a double structure fish species sorting section, and the fish species not passing through the mesh of the fish species sorting section are collected in the fish species sorting section. The fish species passing through the mesh of the sorting unit may be accumulated in the fish collecting bag portion behind the fish type sorting unit.

According to the ship net according to the present invention, the structure of the "tidal part" is devised, and according to the daily environment of the fishing ground, the resistance received in the sea of the ship net through the installation of the tidal volume adjuster It is possible to adjust the size and dynamically adjust the boating speed.
As a result, it is possible to provide a good shipping net with few catches for fishing from the tidal area.

It is a figure (plan view) showing a vessel net for shirasu fishing of the present invention concerning Example 1. It is a figure (right view) which shows the vessel net for shirasu fishings of this invention concerning Example 1. FIG. It is the figure which showed briefly a mode that the tide goes out from the tide part 125. FIG. It is the figure which expanded and showed the structure of the discharge part 130 for jellyfish removal. It is a figure which shows a mode that the tidal volume adjustment body 150 is attached or detached with respect to the tidal part 125. FIG. It is a figure which shows simply the system which tightens the tidal part 125 and the tidal volume adjustment body 150 by a fastener. FIG. 12 is a view showing how the tidal volume adjuster 150 is selectively attached and detached only near the rear end of the tidal portion 125. It is a figure which shows easily the system which tightens the tidal volume adjustment body 150 only with the back end vicinity of the tidal part 125 with a fastener. It is the figure which took out and showed about the tide release part 125a and the tide release amount adjustment body 150a among the shipping net 100a concerning Example 2 intelligibly. FIG. 16 is a diagram showing the tidal part 125 b and the tidal volume adjuster 150 b in a clear manner in the shipping net 100 b according to the third embodiment. It is a figure which shows the example of the insertion pattern of the tidal volume adjustment body 150b. It is a figure showing easily an example of the maneuvering of the conventional boat netting method.

  Hereafter, the Example of the ship net of this invention is described. The present invention is not limited to these examples.

Hereinafter, a configuration example of a shipping net according to the present invention will be described with reference to the drawings.
Unless otherwise noted, it will be described as fish nets for shirasu fishing and ikanago fishing.
1 and 2 are views showing a shipping net of the present invention according to a first embodiment.
FIG. 1 is a plan view, and FIG. 2 is a right side view.

  As shown in FIG. 1 and FIG. 2, the shipping net 100 according to the present invention comprises a sleeve mesh portion 110, a trunk mesh portion 120, a jellyfish removing discharge portion 130, a fish catching bag portion 140, and a tidal volume adjusting body 150. The structure is Meshes are not shown.

  The sleeve mesh portion 110 is a mesh connected to a net drawn by a fishing boat. Originally, it is preferable to use a finer mesh than the target shiras, but if the entire mesh after the sleeve mesh 110 is finely divided, the resistance may be too large and heavy, which may make it impossible to maneuver. It is preferable to increase the maneuvering speed by increasing the mesh of 110 and reducing the resistance.

  The trunk mesh portion 120 is a mesh portion provided between the sleeve mesh portion 110 and the fish bag portion 140, and the mesh size is a mesh finer than the shirasu or ikanago to be caught. The trunk mesh portion 120 is constituted of the trunk portion inlet portion 121, the front portion 122, the middle portion 123, the rear portion 124, the tidal portion 125, the inner suspension 127, and the trunk portion outlet portion 129.

The trunk portion inlet portion 121 is an inlet serving as a connection portion with the sleeve mesh 110.
The front part 122, the middle part 123, and the rear part 124 are nets forming the trunk part 120, and the distinction is for convenience.
In order to reduce the resistance of the entire shipping net 100, it is possible to make the mesh size of the front part 122 relatively large to suppress the resistance and to make the middle part 123 to the rear part 124 finer.

  As an example, the mesh of the front portion 122 is 120 to 140 mass / 50 cm, the mesh of the middle portion 123 is 160 to 180 mass / 50 cm, and the mesh of the rear portion 124 is 200 mass / 50 cm.

  The tide relief portion 125 is a portion in which the mesh is a coarser mesh in part of the side surface of the trunk portion 120 than in the mesh of the other portion, and reduces the resistance generated in the trunk mesh portion 120 during boating. It is a thing. In this configuration example, it is provided on the side surface portion of the middle portion 123.

The tidal relief portion 125 is a member that secures a portion where it is easy for a part of the seawater once captured from the opening of the bagnet of the shipping net to slip out from the side, and does not slow the shipping speed.
FIG. 3 is a diagram simply showing the tides coming out of the tide relief section 125. As shown in FIG. The tide relief portion 125 is useful at a time when a large amount of jellyfish is easily generated.
In this configuration example, for example, the mesh of the middle part 123 is set to 160 to 180 mass / 50 cm, and the mesh of the tide portion 125 is set to 2 to 10 mass / 50 cm. If the grid is so coarse, the tide will break off well.

In recent years, the cycle of mass production of jellyfishes has become short, and the situation has been seen that environmental changes in fishing grounds are changing daily rather than long-term seasonal fluctuations of several weeks. Therefore, if the resistance in the sea is greater than expected, the speed of the ship will be slowed, which will affect the fishing and will increase the load on the ship by the fishing boat. Therefore, in the present invention, it is based on the technical idea that it is sufficient to make a portion where tides are easy to escape, and attach and adjust the tidal volume adjustment body 150 in order to adjust the tidal volume according to the situation. ing.
The attachment and function of the tidal volume adjustment body 150 with respect to the tidal part 125 will be described in detail later.

The description of FIGS. 1 and 2 will be continued.
The inside suspension 127 is a structure for pulling up the fish removal section 140 which is submerged in the sea to collect the shirasu accumulated in the fish removal section 140 as needed by the transport ship onto the transport ship. A hooking jig is attached.

  The trunk outlet portion 129 is an outlet serving as a connecting portion with the fish bag portion 140 described later. As described later, it is located at the rear of the jellyfish discharge unit 130, and the jellyfish discharge unit 130 separates the catch targets such as shirasu and Ikanago from the non catch targets such as jellyfish and catches such as shirasu and fish A subject passes through the trunk outlet portion 129 and is received by the fish bag portion 140.

The jellyfish removing discharge portion 130 is provided in front of the trunk portion outlet portion 129 at a rear stage portion of the trunk mesh portion 120, and an inner bag is provided in the trunk mesh portion 120 to form a double structure discharge portion. is there. In this configuration example, it is provided at a part of the rear portion 124 of the trunk portion 120.
The mesh of the non-catch target discharge section 130 is larger than the mesh of the trunk part 120 and is larger than the catch target shiras and ikanago, and the catch target animal is allowed to pass through and the large non catch target animal And an unnecessary thing is a device which supplements and discharges from the side of drum section 120.

The non-fishing object discharge unit 130 includes a discharge unit inlet opening 131, a discharge unit body 132, and a discharge unit outlet 133.
FIG. 4 is an enlarged detailed view of the structure of the jellyfish removing discharge portion 130, and is a plan view.

  The discharge part inlet opening 131 is an inlet part of the discharge part 130 of the non-fishing object, is provided along the inner periphery of the trunk part 120, and all seawater passing through the inside of the trunk 120 is once the discharge part inlet It will be received in the discharge part 130 of non-fishing object from the opening 131.

  The discharge section trunk section 132 is a mesh body provided between the discharge section inlet opening 131 and the discharge section outlet 133, and as will be described later, the mesh of the discharge section trunk section 132 makes it possible to catch fish such as shirasu It is a part that passes the target animal and captures and separates unwanted objects such as jellyfish and other non-fishing targets and marine debris. As will be described later, this separation can be performed over the entire surface of the discharge body section 132.

  The discharge outlet 133 is attached to the side so as to lead the outside of the trunk part 120, and the shiras and ikanago to be caught pass through the mesh of the discharge trunk 132 and enter the fish removal part 140 described later However, unnecessary objects such as jellyfish and marine debris are guided to the outside of the trunk portion 120 from the outlet port 133 and discharged. The diameter of the opening may be, for example, about 2 m.

  In this example, the shape of the non-catch target discharge portion 130 is asymmetrical, and in this configuration example, the left side of the non-catch target discharge portion 130 is substantially straight. The right side of the discharge part 130 is a curved surface that is smoothly curved to a large degree, and has a shape like a so-called short corner of a cow.

  As described above, the jellyfish removing and discharging unit 130 first has a shape that squeezes in a bowl shape to separate a target to be caught and a target not to be caught. By squeezing in a mortar shape, the objects to be caught go straight straight and pass through the net to advance to the next stage of the fish section, while the objects not to be caught are collected at the center to separate the objects to be caught and not collected is there. The shape of the jellyfish removing discharge portion 130 is squeezed into a bowl shape and then guided toward the side surface of the discharge portion barrel 132, and the discharge outlet outlet 133 is provided on the side surface of the discharge portion barrel 132 and opened. ing. The non-fishing target animals and unwanted matter are discharged from the open outlet 133 to the outside of the side of the discharge barrel 132. Since the ship net is continuously pulled during the operation time when ship maneuvering starts, if the open outlet of the discharge part 130 for removing jellyfish is thus provided on the side of the discharge body section 132, the ship net for ship maneuvering As the fish moves forward, non-fishing targets and unnecessary materials pass through the jellyfish discharge unit 130 and are discharged from the discharge unit outlet 133 provided on the side surface of the trunk 132 one after another.

Referring back to FIGS. 1 and 2, the description will be continued.
The fish removal unit 140 is a part that captures and accumulates marine animals captured by the shipping net 100. In this configuration example, it is configured to include a shellfish picking 141, a fish picking 142, and a fish winding 143. The whole of the fish removal section 140 can be separated by a chuck or the like, and the carrier can pull up the inside suspension 127 with a hook or the like, pull it up, remove the fish removal 140 chuck and withdraw only the fish removal section 140 and collect it. It is a mechanism that can be done.

  The giant clam extract 141 is a fish species sorting section provided with an inner bag in the sack portion of the fish removing section 140 to make a double structure fish species that do not pass through this mesh accumulate in this, and fish species that pass through this mesh Is a structure that is collected in a fish bag. In this configuration example, the size of the mesh may be a size that allows Shirasu to pass but not Shiko. In addition, floating matter such as jellyfish larger than giant clam and marine unwanted matter can not pass through the jellyfish removal and is discharged from the jellyfish removal outlet 128. It will accumulate.

  The fish tray 142 is located downstream of the giant clam jar 141, and is a portion where the fish species that has passed through the giant clam shell 141 finally accumulates, and in this configuration example, shiras, which is a fish species to be captured, is accumulated.

  The fish roll 143 is a portion that holds the final stage of the fish tray 142. If the fish winding 143 has a structure that can be opened and closed, the fish winding 143 can be opened on the carrier ship to take out the shirasu.

Next, the tidal volume adjustment body 150 will be described.
The tidal volume adjustment body 150 increases or decreases the resistance in the sea by attaching or detaching to the tidal portion 125.
The structural example of the tidal volume adjustment body 150 of the first embodiment is of the mesh type.

  In this configuration example, the size of the mesh is such that the mesh of the middle part 123 is 160 to 180 mass / 50 cm, and the mesh of the tide portion 125 is 2 to 10 mass / 50 cm. A mesh-type tidal volume adjuster 150 is selected and attached so as to cover the surface of the tidal portion 125.

FIG. 5 is a diagram showing how the tidal volume adjuster 150 is attached to and detached from the tidal portion 125. As shown in FIG. The upper drawing of FIG. 5 shows how the tidal drop adjustment body 150 is attached to and detached from the tidal discharge portion 125, and the lower view of FIG. 5 shows the tidal drop adjustment body 150 with the tidal discharge portion 125 attached. There is.
As shown in FIG. 5, by selecting the tidal volume adjustment body 150 having different mesh fineness, it is possible to adjust the tidal volume out of the tidal portion 125.

  As mesh-type tidal volume adjustment body 150, it is sufficient to prepare various grids in the range of 20 to 160 mass / 50 cm so that adjustment can be performed in multiple stages. Thus, the tidal volume changes by selecting and superposing the tidal volume adjustment body 150 of the fine mesh on the coarse mesh tidal portion 125 and forming a double-structured mesh, the amount of tidal volume changes, and The resistance of the can be adjusted.

  If the tide portion 125 itself is to be replaced, the work becomes a work of sewing the net again after separating the parts of the net, and it takes time and cost. It is impossible to change dynamically according to the situation of the day or even to replace it on board.

On the other hand, if it is the method of covering the tidal volume adjustment body 150 from the top like this invention, it can attach comparatively easily, and it is possible to change dynamically according to the condition of the day.
In addition, although what can be easily attached on the tidal part 125 is preferable, the tidal volume adjustment body 150 needs to be firmly attached in order to receive fixed resistance in the sea.

Therefore, for example, one of the fasteners 151 is attached and placed along the outline of the tide portion 125, and the other of the fasteners 151 is attached and placed on the edge of the tidal volume adjustment body 150 as well. There is a system that tightens firmly.
FIG. 6 is a view simply showing a method of tightening the tidal relief portion 125 and the tidal volume adjustment body 150 with a fastener.

  FIG. 6A shows a state in which the tidal volume adjustment body 150 is removed from the tidal portion 125. FIG. 6 (b) shows a state in which the selected tidal volume adjuster 150 is applied to the tidal portion 125. In the state shown in FIG. 6, the fastener 151 is fastened and firmly attached.

If it is this system, the effort of attachment is also very easy and does not drop off easily.
If fasteners 151 are attached to all of the tidal volume adjustment bodies 150 having different mesh fineness, the tidal volume adjustment body 150 is selected according to the daily fishing ground situation and the contour of the tidal portion 125 is selected. You may attach it with a fastener along the line.
As described above, it is possible to adjust the size of the resistance in the sea by the presence or absence of the attachment amount or the attachment amount of the tidal volume adjustment body 150, and to adjust the boating speed.

  Next, a device in which the area to which the tidal volume adjustment body 150 is attached in the tidal portion 125 is a part will be described. As shown in FIGS. 5 and 6, the tidal volume adjuster 150 can be attached so as to cover the entire surface of the tidal portion 125, but there may be cases where the amount of tidal volume is too large. In that case, the mesh of the tidal volume adjustment body 150 may be attached as a little rough, but if the attachment range is the whole, the attachment operation takes time and effort. Therefore, the device for narrowing the attachment range by attaching the tidal volume adjustment body 150 only to a partial region of the tide portion 125, and limiting to a necessary tidal volume have been made.

Here, in the selection of a partial region of the tide portion 125, the region from the center to the rear portion or only the rear portion is preferentially selected and attached.
FIG. 7A is a view showing how the rear portion is selected as a partial region of the tide relief portion 125 to which the tidal volume adjustment body 150 is attached, and the tidal volume adjustment body 150 is attached. The tidal volume adjustment body 150 is finished in the shape of only a part behind.
FIG.7 (b) is a figure which shows a mode that the tidal volume adjustment body 150 was attached only to the back part. As shown in FIG. 7 (b), the fine part of the tidal volume adjustment body 150 of the mesh is attached to the rear part of the tidal part 125, and the other part from the front to the center of the tidal part 125 is the coarse original of the mesh. The tide zone 125 is visible. Since the attachment range of the tidal volume adjustment body 150 is suppressed to be narrow, the attachment work is simplified.

FIG. 8 is a view showing an example of a configuration in which a partial area of the tide relief portion 125 to which the tidal volume adjustment body 150 is attached is attached by a fastener.
As shown to Fig.8 (a), the tidal volume adjustment body 150 is finished by the shape of a part of back, and the fastener is attached along the outline. The tidal relief portion 125 is attached by a fastener along its contour.
As shown in FIG. 8 (b), if the tidal volume adjustment body 150 is applied to a part of the tidal portion 125 and closed by the fastener, as shown in FIG. 8 (c), both are fasteners. It can be tightened.

  Although the amount of tide removal depends on the area of the tide amount adjustment body 150 to be attached, the tide position is centered on the front side by setting the attachment position to the rear. Because the diameter is larger in the front, the tide that comes out is the sea water relatively near the circumference, and the sea water near the center is difficult to escape. If the tidal volume adjustment body 150 is attached to the front and the tide is drained around the back, the narrow diameter, the tide that escapes will also drain the seawater near the center relatively, and it has entered the trunk net deeply There is a possibility that the target fish species will escape from the tide flow. With the configurations shown in FIGS. 7 and 8, such problems are reduced.

  As described above, according to the shipping net 100 according to the first embodiment, by simply adjusting the tidal volume with a simple structure, the shipping speed can be easily adjusted, and non-fishing targets such as jellyfish can be efficiently In addition to being excluded, it is possible to prevent the omission of catches such as Shirasu and Ikanago.

The second embodiment is the same fishing net as the first embodiment, but the type of the tidal volume adjustment body 150 is different.
The type of the tidal volume adjusting body of Example 1 was a type to which nets of different mesh sizes were attached.
The type of the tidal volume adjustment body of the second embodiment is a flat or mesh sheet, and is a type attached to the tidal portion 125. In addition, a sheet | seat body is made into a roll-formable raw material, and in the state which mounted | worn the sheet | seat body in the tidal volume adjustment body pocket, mechanical winding-up of a shipboard net is enabled.

  The configuration of the shipping fish net 100a according to the second embodiment is the same as the first embodiment, and includes the sleeve net portion 110, the trunk net portion 120, the jellyfish removing discharge portion 130, the fish catching bag portion 140, and the tidal drop adjustment body 150a. In the trunk mesh portion 120, the tidal drop portion 125a is different, and the tidal drop adjustment body 150a is different.

  FIG. 9 is a diagram showing the tidal part 125a and the tidal volume adjuster 150a in the shipping net 100a according to the second embodiment in an easily understandable manner. FIG. 9 (a) shows a state before inserting the plate-like tidal volume adjuster 150a, and FIG. 9 (b) shows a state where the plate-like tidal volume adjuster 150a is inserted.

As shown in FIG. 9A, a tidal volume adjusting body pocket 126a is provided on the surface of the net of the tide portion 125a. The tidal volume adjustment body pocket 126a is a net-like pocket having a net provided with an opening in the traveling direction of the shipping net 100a, and is a net-like bag. The plate-like tidal volume adjustment body 150a is attached to the tidal volume adjustment body pocket 126a.
Although the size of the mesh of the tidal volume adjusting body pocket 126a is not limited, it may be the same size as the mesh of the tide portion 125a.
The tidal volume adjuster 150a is inserted here.

  As shown in FIG. 9A, the tidal volume adjuster 150a is made of a material that is flexible enough to be rolled into a roll. For example, if there is a certain degree of durability such as sponge, urethane foam, gel inclusion body, silicone rubber, etc. and the flexibility is excellent, the tidal volume adjustment body 150a is also when winding the mesh with a winding machine. It does not inhibit the operation.

  As shown in FIG. 9B, when the plate-like tidal volume adjusting body 150a is mounted in the tidal volume adjusting body pocket 126a, a part of the mesh of the originally coarse tidal portion 125a adjusts the tidal amount Since the body 150a is closed, the amount of tidal flow out of the tidal portion 125a changes.

  If the tidal volume adjustment body 150a is in the form of a mesh, the mesh of the tidal volume 125a is converted to the mesh of the mesh of the tidal volume adjustment body 150a. It is very easy to mount the sheet-like tidal volume adjuster 150a in the tidal volume adjuster body pocket 126a, and once inserted, it can be easily detached during ship fishing There is no

  When there is no mesh in the tidal volume adjustment body 150a, the mesh of the tidal volume portion 125a is blocked by the tidal volume adjustment body 150a. If the sealed area is too large, the resistance of the shipping net 100a in the sea may be too large to be able to ship, so when attaching the tidal volume adjustment body 150a, the area may be small to some extent Need to adjust to.

  Here, various fine mesh sizes and various sizes are prepared as the tidal volume adjustment body 150a, and the tidal volume adjustment body 150a dynamically according to the daily fishing ground situation. Is selected and inserted into the tidal volume adjusting body pocket 126a, it is possible to easily adjust the tidal volume coming out of the tide portion 125a. This replacement is easy and possible on board.

Next, as Example 3, a device for dividing the tidal volume adjusting body pocket shown in Example 2 and dividing the tidal volume adjusting body into a divided size will be described.
FIG. 10 is a diagram showing the tidal part 125b and the tidal volume adjuster 150b in a easily understandable manner in the shipping net 100b according to the third embodiment. FIG. 10 (a) shows a state before inserting the plate-like tidal volume adjuster 150b, and FIG. 10 (b) shows a state where the plate-like tidal volume adjuster 150b is inserted.

  As shown in FIG. 10 (a), a plurality of small tidal volume adjusting body pockets 126b are provided on the surface of the tide portion 125b. The size, shape, position and the like of the tidal volume adjustment body pocket 126b are not limited, but in this example, four substantially trapezoidal ones are provided.

As shown in FIG. 10 (b), a plate-like tidal volume adjusting body 150b finished in a matched shape is inserted into the tidal volume adjusting body pocket 126b.
If the tidal volume adjusting body 150b is in the form of a mesh, the mesh of the tidal volume adjusting body pocket 126b of the tidal portion 125b is converted to the mesh of the tidal volume adjusting body 150b. .
If the tidal volume adjustment body 150b is flat, the mesh of the tidal volume adjustment body pocket 126b of the tidal portion 125b is closed by the plate of the tidal volume adjustment body 150b.

  Here, various fine mesh sizes and flat plates of various sizes are prepared as the tidal volume adjustment body 150b, and the tidal volume adjustment is dynamically adjusted according to the daily fishing ground situation. If the body 150b is selected and the tidal volume adjusting body pocket 126b is selected and inserted into it, it is possible to easily adjust the tidal volume out of the tidal portion 125b more finely.

  Note that if there are a plurality of tidal volume adjustment body pockets 126b as described above, there are many options as to which mesh fineness tidal volume adjustment body 150b is inserted into which tidal volume adjustment body pocket 126b. to be born.

Fig.11 (a) is an insertion pattern example of the tidal volume adjustment body 150b, FIG.11 (b) is a figure which shows the other insertion pattern of the tidal volume adjustment body 150b.
In the example of FIG. 11A, the backmost tidal volume adjuster body pocket 126b is selected from the plurality of tidal volume adjuster body pockets 126b, and the tidal volume adjuster body 150 is attached thereto only It is.
In the example of FIG. 11 (b), among the plurality of tidal volume adjuster pockets 126b, the rearmost tidal volume adjuster pocket 126b and the tidal volume adjuster pocket 126b immediately ahead thereof are selected, It is an example which attached the tidal volume adjustment body 150 in them.
Each of the patterns has a pattern of attaching the tidal volume adjuster 150 around the rear.

If it is a pocket, the tidal volume adjustment body 150 can be easily attached to the tidal portion 125, and a plurality of tidal volume adjustment body pockets 126b can be selected and easily attached. Adjustments can be made more finely.
Given the mesh fineness, the choice of the tidal volume adjuster body pocket 126b location, there may be a number of patterns. This adjustment is also possible on board.

  Although the preferred embodiments of the configuration example of the vessel net of the present invention have been illustrated and described above, it will be understood that various modifications can be made without departing from the technical scope of the present invention. .

  The ship net according to the present invention can be widely applied to shiras fishery, ikanago fishery ship nets and the like.

DESCRIPTION OF SYMBOLS 100 Shipping network 110 Sleeve section 120 Waist section 121 Trunk section entry section 122 Front section 123 Middle section 124 Rear section 125 Tide relief section 126 Tide release amount adjustment body pocket 127 Hanging 129 trunk section exit section 130 Jellyfish removing section 131 Discharge part inlet opening 132 Discharge part body part 133 Discharge part outlet 134 Opening and closing structure 135 Opening and closing part 136 2nd opening and closing structure 140 Fish taking part 141 Shrimp taking 142 Fish taking 143 Fish winding 150 Tidal quantity adjustment body

Claims (10)

A fishing net for catching target animals which live in the sea or the sea floor, and
In the torso portion provided between the sleeve mesh portion and the fish bag portion, the mesh size of which is smaller than that of the marine animal to be caught,
A trunk portion inlet portion which is a connection portion with the sleeve net, a trunk portion outlet portion which is a connection portion with the fish collecting bag portion, and a trunk portion net between the trunk portion inlet portion and the trunk portion outlet portion A body and a part of the side surface of the trunk network, the mesh being coarser than the mesh of the other part, which reduces the resistance generated during shipboarding;
It has a tidal volume adjuster that increases or decreases resistance in the sea by attaching to the tidal portion,
A shipping network characterized in that the magnitude of the resistance in the sea is adjusted according to the presence or absence or amount of attachment of the tidal volume adjustment body to adjust the speed of vessel construction.   The tidal volume adjuster is a mesh having a mesh finer than the mesh of the tidal part, and the mesh of the tidal volume adjuster is covered and attached to the mesh of the tidal part, The ship net according to claim 1, wherein the tidal part has a double structure of nets.   The ship net according to claim 1 or 2, wherein the shape of the tidal open part is wide at the front and squeezed toward the rear.   Attach and place one of the fasteners along the outline of the tidal discharge portion, attach and place the other of the fastener along the edge of the tidal volume adjustment body, and secure both with the fastener. 4. A shipping net according to any one of the preceding claims, wherein it is possible.   An area to which the tidal volume adjuster is attached in the tidal part is a partial area of the tidal part, and a portion from the center to the rear or only to the rear is preferentially selected and attached. The shipping net according to any one of Items 1 to 4. The said tidal volume adjustment body is a flat or mesh-like sheet body,
A tidal volume adjusting body pocket in which the sheet body fits can be provided on the mesh body surface of the tidal part, and the tidal volume adjusting body can be attached to the tidal volume adjusting body pocket. The shipping net according to any one of Items 1 to 3. The ship net according to claim 6, wherein the tidal volume adjustment body pocket is provided only in the rear part or the rear part from the vicinity of the center of the tidal part.   The sheet body, which is the tidal volume adjustment body, is a material that can be deformed in a roll shape, and mechanical winding of the marine net can be performed in a state where the sheet body is mounted in the tidal volume adjustment body pocket A shipping net according to claim 6 or 7.   It is formed as an inner bag at a position slightly forward of the inside of the trunk outlet, the opening is over the entire cross-section of the trunk, and the discharge outlet is the outlet of the non-fishing object provided on the side of the trunk net. And the mesh is large enough to allow the fish to pass through, and the fish to be caught is passed backward and supplemented with a non-fish catch that is larger than the fish net from the discharge outlet on the side of the trunk net The shipping net according to any one of claims 1 to 7, further comprising a discharge unit for discharging non-fishing objects.   The ship net according to any one of claims 1 to 9, wherein the marine animals to be caught are fish species including shirasu or kanago.

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