KR20090079735A - A trawl fishery available in a low and middle story and method for trawlilng - Google Patents

Abstract

A troll, and its trolling method are provided to allow it to be used in both bottom layer and intermediate layer without the effect of geological characteristic of the deep sea. A troll capable of being used in both bottom layer and intermediate layer comprises a net(110) whose front is opened to catch the school of and whose width becomes narrow as it goes the rear; a net spreading device(130) which hangs the net to a string and spreads the net with pulling the net to a ship; and a height control device(150) which is installed at the net or the net spreading device, and determines the spread position of the net to catch the fish species living in both intermediate layer and bottom layer.

Description

A trawl fishery available in a low and middle story and method for trawlilng}

The present invention relates to a troll and a method that can be used in both low and middle layers without being affected by the geological properties of the seabed, and more particularly, it is possible to capture fish species living in the middle layer and fish species living in the lower layer. The height adjustment device is installed under the net so that the height of the net can be adjusted according to the seabed environment, and the height adjustment device floats upward when the hydraulic pressure is applied. The height adjustment key sinks downward, the control means connected to the upper and lower edges of the height adjustment key, respectively, to control the height adjustment key by pulling the upper or lower edge of the height adjustment key, and the net in the direction of the height adjustment key. It is composed of towing rope.

In general, trawl fishing is a type of "fish fishing" that is the latest version of the fishing net. Book species, and those living near the seabed, are the main targets for fishing.

Low-troll trawling is a technique in which a boat hauls a net and catches fish when the net is stably spread on the sea floor. This is the most advanced way to shoot exactly the fish you want. With middle troll fishing, fish species living near the middle layer of the sea are targeted.

When the net is lowered and raised (two nets, two nets), it is called a stern troll when working with the back of a ship, or a stern, and a side trawl when raising and lowering the net next to the ship. Lately, side trolls are rarely used except for small vessels.

The trawl network 10 used for the above-mentioned trawl fishing, in particular, low net fishing, is provided with a weight body 22 at the lower end of the opening side of the bag-shaped net 20 of a predetermined size, as shown in Figs. Float 24 having a buoyancy in a circular or oval shape is formed at the upper end side, and the weight body 22 and the float 24 are drawn to the hand rope 28 connected to the ship 2 by drawing a connecting rope 26. This is the connected configuration.

The conventional trawl network 10 comprised as mentioned above is mainly suitable for a low net fishing, and there exists a problem that cannot catch suitably the catch of the fish species which live in the vicinity of the middle layer of the sea. For example, going to the coast of Alaska and catching low trolls, flounders, cod, and ramen, you can't catch mid-tier trolls in the deep North Pacific ocean. Therefore, a trawl network that can respond appropriately to the geological characteristics of the seabed and the fishing environment is required.

As described above, the height of the trawl network should be adjusted so that the trawl network 10 can be dragged to the vessel 2 to catch both fish species living in the lower and the middle strata, according to the Korean Utility Model Publication No. 20-0204976. As a trawl network used for this baseline network, the structure which adjusts the opening degree of a network entrance easily using a float is disclosed. This is to easily adjust the inlet of the fishing net by forming the angle control plate using synthetic fiber and arbitrarily adjust the angle of the control plate with a chain, it is not configured to adjust the trawl net itself according to the fishing environment for use in both low and middle layers.

On the other hand, low-troll trolls in low-net networks randomly catch a large number of unspecified fish, and such fishing methods indiscriminately capture undersea resources, which may lead to depletion of fish stocks in the long run. high. In addition, the low-network sweeping and capturing results in severe ups and downs in the seabed, causing the net to be torn or discarded as it is, causing serious environmental pollution.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to change the fishing environment to catch pollack, flounder, cod, Leemyeonsu, etc. at the bottom layer to catch pollack in the middle layer To provide a mid-tier troll that can be used flexibly.

According to a feature of the present invention for achieving the object as described above, the present invention is a net that is opened to capture the fish group, the width narrows toward the rear, and the net is suspended on the rope to the ship A net deploying device which expands the net as it goes, and a height adjusting device which is installed in the net or the net developing device and determines a deployment position of the net so as to capture fish species living in the middle layer and fish species living in the lower layer. .

The net, the back plate, the bottom plate and the side plate is formed integrally, the rear end is a bag shape with the end is formed to trap the fish group.

The net deploying device includes a sinker line in which a weight is fixed to the bottom of the opening side of the net by gravity to sink to the bottom, and the net floats on the water by buoyancy at the top of the opening side of the net. A float line to which the float is fixed, a connecting rope extending from the sinker line and the float line, a double rope to unwind or pull out the net, a hand rope connecting the connecting rope to both wires of the ship, and the hand rope It is installed on one side of the includes a deployment plate for deploying the net so that the net spreads well to the left and right when deploying the net.

The height adjusting device includes a height adjusting key that functions as a rudder in contact with water, an adjusting means for controlling the height adjusting key, and a traction rope connecting the height adjusting key and the net.

The height adjustment key is composed of a plate for angle adjustment on the  plate that floats upwards or sinks downwards by hydraulic pressure.

The adjusting means is composed of a control rope connected to each of the top and bottom edges of the angle adjustment plate, the control rope extending from the top edge of the plate via the return ring installed at one point of the connection rope It is connected to the bottom edge of the plate.

The control rope is installed in the center of the plate, connected to the ship and directly controlled by the ship.

The height adjusting device includes a height adjusting key which functions as a rudder in contact with water, and an adjusting means for controlling the height adjusting key, wherein the height adjusting key and the adjusting means are installed at one side of the connection rope or the hand rope.

The height adjustment key is a plate for angle adjustment on the  plate that floats upward or sinks downward by hydraulic pressure, it is composed of a pair for left and right balance.

The adjusting means is composed of a control rope connected to the upper left and right corners and the lower left and right corners of the angle adjustment plate, respectively.

The control rope extending from the top edge of the plate is connected to the bottom edge of the plate via a return ring installed at one point of the connection rope or hand rope.

The connection rope or the hand rope is formed in the center of the plate through which the rope passes through the center of the plate is installed so as to penetrate, the plate is separated from side to side so that the plate is detachable, to connect the divided plate The upper and lower frames are bolted in the horizontal direction of the plate.

And a fish detection device for monitoring the situation of the seabed, wherein the fish detection device includes a monitor installed in the ship, an underwater camera installed in the net, and providing a video signal to the monitor by wire or wirelessly; And an illumination device installed at one side of the underwater camera or the net to identify a state of the seabed to provide a light source.

The connecting rope extending from the net opening the front and narrowing toward the rear, the sinker line sinking the net at the bottom of the opening side and the float line floating the net at the upper end of the opening side, and the connecting rope In the trawl method comprising a hand rope that is connected to the back and the net, while dragging the net to the vessel to expand the net to capture the fish group, connecting the control rope to the upper and lower edges of the plate-shaped plate, respectively, At one point of the connecting rope, a return ring is installed, and the adjusting rope extending from the upper and lower edges of the plate reconnects with the lower and upper edges of the plate via the return ring, and the net is To connect the net and the plate so that it can be linked with the plate to injure and sink Connecting the control rope to the center of the plate, and when catching the fish in the middle layer, if the control rope extending from the top edge is pulled forward, the control rope extending from the bottom edge turns around the return point of the return ring. And pulling back.

As described above, according to the configuration of the present invention, the effect that can be used in both the low and middle layers can be expected without being affected by the geological characteristics of the deep sea.

1 is a perspective view showing the configuration of a trawl network deployed by a vessel according to the prior art.

Figure 2 is an enlarged perspective view showing the configuration of a trawl network according to the prior art.

3 and 4 are a perspective view and a side view respectively showing the configuration of a trawl network usable in both the low and middle layers according to the present invention.

Figure 5 is a perspective view showing the configuration of a trawl network usable in both low and middle layers according to another embodiment of the present invention.

Figure 6 is a perspective view showing the configuration of a trawl network usable in both low and middle layers according to another embodiment of the present invention.

7 is a side view of FIG. 6;

8 is a side view showing a state of use of FIG.

9 is an exploded perspective view showing a configuration in which the angle adjusting plate is detachably detachable.

** Description of Codes for Major Configurations of Drawings **

100: trawl network 110: net

130: net deployment device 132: Sinka line

134: float line 136: connecting rope

138: hand rope 150: height adjustment device

160: height adjustment key 162: angle adjustment plate

170: adjusting means 172: adjusting rope

174: return ring 180: towing rope

190: frame

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the troll and the method that can be used in both the low and middle layers according to the present invention having the configuration as described above will be described in detail.

As shown in Figures 3 and 4, the trawl network 100 of the present invention, which can be used in both low and middle layers, is a net 110 for catching a fish group, and the net 110 is suspended on a line and dragged into a ship. Net deployment device 130 for deploying the net 110 and is installed between the net 110 and the net deployment device 130, the net 110 to capture fish species living in the middle layer and fish species living in the lower layer It is configured to include a height adjustment device 150 to determine the deployment position of.

The net 110 has a back plate, a bottom plate and a side plate are integrally formed, and the rear end has a bag shape having a tip formed to trap the fish group. In the net 110, various fish groups are captured while being towed by the ship, and dragging the net 110 in the water increases the drag resistance due to the water and the lifting resistance to be lifted onto the ship, so as to reduce the various resistance. It gradually forms narrower toward the rear from the inlet of (110).

The net deploying device 130 includes a sinker line 132 having a weight fixed to the bottom of the opening 110 of the net 110 by gravity to sink to the bottom, and an opening top of the net 110. Float line 134 is fixed to the float so that the net 110 floats on the water by buoyancy, connecting rope 136 extending from the sinker line 132 and the float line 134, respectively, and the motor A net (not shown) for releasing or drawing a net by the wire, a hand rope 138 connecting the wire rope 136 and a wire of the ship, and one side of the hand rope 138 to be installed on the net 110. It includes an otter board (not shown) for deploying the net so that the net 110 unfolds from side to side when deployed.

The height adjustment device 150, the height adjustment key 160, the adjustment means 170 for adjusting the height adjustment key 160, the height adjustment key 160 and the net 110 by connecting the net ( It consists of a towing rope 180 to raise or lower 110.

The height adjustment key 160 is composed of a square angle adjustment plate 162 having a predetermined thickness and width. Therefore, the plate 162 is in contact with the water to serve as a rudder, and when the top of the plate 162 is tilted forward, it will float upward by the water pressure flowing backward, and when the top of the plate 162 is tilted backward, It will sink downward by the water pressure flowing into it.

The adjusting means 170 is composed of a control rope 172 connected to the upper and lower edges of the plate 162, respectively. The adjusting rope 172 extending from the upper edge and the lower edge of the plate 162 is integrally connected, and at one point of the connecting rope 136 or at an intersection point where the connecting rope 136 and the hand rope 138 meet. Install the return ring 174 and allow the adjustment rope 172 to rotate with the return ring 174 as the return point.

That is, when the adjusting rope 172 extending from the upper edge is pulled forward, the adjusting rope 172 extending from the lower edge is pulled backward. On the contrary, when the control rope 172 extended from the bottom edge is pulled forward, the control rope 172 extended to the top edge is pulled backward. Here, the fixing rope 172 is fixed by using a clamp or the like on one side of the return ring 174 or the adjusting rope 172.

The towing rope 180 is a function of connecting the height adjustment plate 162 and the net 110 at the same time as the rotation center of the plate 162, and also has a function of balancing the left and right of the plate 162. Therefore, the pulling rope 180 is installed to connect the upper end of the opening side to both sides.

The towing rope 180 is described as being installed at the upper end of the opening side of the net 110, but is not necessarily limited thereto, and may be installed between the deployment plates. The deployment plate is installed on the hand rope 138 to guide the hand rope 138 to be well open to both sides, the towing rope 180 may be installed between the deployment plate.

The adjustment rope 172 may be installed only on one side of the plate 162, and both sides of the control rope 172 may be installed. In addition, as shown in Figure 5, the adjustment rope 172 is installed in the center of the plate 162, it can be configured to be controlled directly from the vessel. When the control rope 172 is installed on the return ring 174, the trawl network 100 needs to be re-adjusted by walking, but when the control rope 172 is extended to the ship, the height adjustment key 160 may also be controlled in the ship. Can be. In addition, the height adjustment key 160 is not excluded from being able to remotely control the remote control.

As shown in Figure 6, 7 and 8, according to another embodiment of the present invention, the height adjustment device 150 is connected to the rope rope 136 unlike the embodiment is installed on the towing rope 180 Alternatively, the hand rope 138 is installed.

That is, the height adjusting device 150 is installed on one side of the pair of hand ropes 138, the height adjusting device 150 is symmetrical, the hand rope 138 is the center of the rectangular rectangular plate 162 It is installed to pass through. Therefore, in order to adjust the plate 162 to be inclined up and down, the end of the adjustment rope 172 is connected to each corner of the square plate 162, the central one side of the adjustment rope 172 is returned to the hand rope 138 installed It is installed to pass through the ring 174.

The square plate 162 serves as a rudder so that the net 110 floats up or sinks down. When the net 110 is to be supported up, the square plate 162 extends the control rope 172 extending from the upper edge. Pulling forward pulls the adjustment rope 172 extending from the bottom edge backwards, while the top of the plate 162 is inclined downward, and conversely extends from the top edge if the net 110 is to be lowered down. Pulling the adjusted control rope 172 backward, the control rope 172 extending from the upper edge is pulled forward, the top of the plate 162 is inclined upward. Then, the adjustment rope 172 is fixed by using a clamp (not shown).

In addition, in order to lower or raise the net 110 from the ship, you have to wind the hand rope 138 by using a double mesh, since the plate 162 may interfere with the winding, it is configured to be detachably attached. As shown in FIG. 9, the plate 162 is bisected to the left and right, and the upper and lower frames 190 are vertically connected by using bolts in the horizontal direction of the plate 162.

On the other hand, the net 110 may be further installed a fish detection device that can monitor the situation of the seabed. This is to prevent indiscriminate capture of seabed resources and to make it easier to see the movement of fish. In addition, it is possible to further install various sensors that can determine the topography of the seabed, the speed of the current and the like.

To this end, a ship is equipped with a monitor, and a net is equipped with an underwater camera to grasp the state of the seabed, and the video signal transmitted from the underwater camera is transmitted to the monitor by wire or wirelessly, clearly identifying the state of the dark seabed. In order to do this, lighting devices for video detection can be further installed in the net or underwater cameras.

As described above, the present invention has a variety of types of trolls, low-troll trolls are used to catch benthic fish, middle-troll trolls are used to catch migratory fish that live just below the sea surface, It can be seen that the technical idea is a configuration in which all trolls can be used. Within the scope of the basic technical idea of the present invention, many other modifications will be possible to those skilled in the art.

Claims (14)

A net that is opened to catch fish and whose width becomes narrower toward the rear; A net deploying device which extends the net by hanging the net on a rope and dragging the net; A height adjusting device installed in the net or the net deploying device and determining a deployment position of the net so as to capture fish species living in the middle layer and fish species living in the lower layer; Troll usable in both low and middle fishing, characterized in that configured to include. The method of claim 1, The net, the back plate, the bottom plate and the side plate is integrally formed, the rear end can be used for both low and middle trolls, characterized in that the bag-shaped end is formed so as to trap the fish group. The method of claim 1, The net deployment device, A sinker line having a weight fixed to the bottom of the opening side of the net by gravity to sink to the bottom; A float line on which the float is fixed so that the net floats on water by buoyancy at the upper end of the opening side of the net; Connecting ropes extending from the sinker line and the float line, respectively; A netting machine that unwinds or draws out the net; A hand rope for connecting the connecting ropes and the ship's mantle; A deployment plate installed on one side of the hand rope and deploying the net so that the net expands well from side to side when the net is deployed; Troll usable in both low and middle layers, characterized in that configured to include. The method according to claim 1 or 3, The height adjustment device, Height adjuster which functions as a rudder in contact with water; Adjusting means for controlling the height adjusting key; Towing rope connecting the height adjustment key and the net; Troll usable in both low and middle layers, characterized in that configured to include. The method of claim 4, wherein The height adjustment key is a troll that can be used for both low and middle layers, characterized in that consisting of a plate for angle adjustment on the plate that floats upwards or sinks downwards by hydraulic pressure. The method of claim 5, wherein The adjusting means is composed of a control rope connected to each of the top and bottom edges of the angle adjustment plate, the control rope extending from the top edge of the plate via the return ring installed at one point of the connection rope Trolls for both low and mid strata characterized by connecting to the bottom edge of the plate. The method of claim 6, The control rope is installed in the center of the plate, connected to the vessel can be used in both low and middle troll, characterized in that directly controlled from the vessel. The method of claim 3, wherein The height adjustment device, Height adjuster which functions as a rudder in contact with water; Adjusting means for controlling the height adjusting key; Including; The height adjustment key and the adjustment means are available on both the low and middle floor troll, characterized in that installed on one side of the connection rope or hand rope. The method of claim 8, The height adjustment key is a troll plate that can be floated upwards or sinks downwards by hydraulic pressure, and can be used in both low and middle layers, characterized in that the pair is configured for left and right balance. The method of claim 8, The control means, trolls that can be used in both the lower and middle layers, characterized in that consisting of a control rope connected to the upper left and right corners and the lower left and right corners of the angle adjustment plate. The method of claim 10, The control rope extending from the upper edge of the plate is connected to the lower edge of the plate via a return ring installed at one point of the connection rope or hand rope, trawl usable for both low and middle floors. The method of claim 11, The connection rope or the hand rope is formed in the center of the plate through which the rope passes through the center of the plate is installed so as to penetrate, the plate is separated from side to side so that the plate is detachable, to connect the divided plate Troll usable in both the lower and middle layers, characterized in that the upper and lower frames are bolted in the horizontal direction of the plate. The method of claim 1, Fish detection device for monitoring the situation of the seabed; More, The fish detection device, A monitor installed on the vessel; An underwater camera installed in the net and providing an image signal to the monitor by wire or wirelessly; An illumination device installed at one side of the underwater camera or the net to identify a state of the seabed to provide a light source; Troll usable in both low and middle layers, characterized in that configured to include. The connecting rope extending from the net opening the front and narrowing toward the rear, the sinker line sinking the net at the bottom of the opening side and the float line floating the net at the upper end of the opening side, and the connecting rope In the trawl method consisting of a hand rope connected to the back and the net, while dragging the net to the ship to expand the net to capture the fish group, Connecting the adjusting ropes to the upper and lower edges of the plate-shaped plate, respectively; Installing a return ring at one point of the connection rope, and connecting the control rope extending from the upper edge and the lower edge of the plate to the lower edge and the upper edge of the plate via the return ring; Connecting an adjusting rope to the center of the plate so as to connect the net with the plate so that the net can interlock with the plate and float and sink; When catching the fish in the middle layer, if the control rope extending from the upper edge is pulled forward, the control rope extending from the bottom edge is pulled back around the return point of the return ring; Troll method usable in both low and middle layers, characterized in that configured to include.