KR102684454B1 - Gathering device of fish egg and larva and juvenile - Google Patents

Abstract

The present invention relates to an egg fry collector in which a funnel-shaped fishing net sunk in seawater to a predetermined depth is seined with a towing rope connected to a ship to guide fish eggs, larvae, and fry, etc. into a collecting bin at the rear end of the fishing net, in more detail. An entrance shutter formed by a semicircular shutter frame, a fixed frame, and a shutter network connected along the inner peripheral surface of each frame is arranged on the front surface of the ring-shaped entrance frame installed at the entrance side of the tip of the collection net, and the shutter frame and the fixed frame are arranged. It is divided and connected to the upper and lower parts of the front surface of the entrance frame, and the shutter frame is installed to enable angular movement from the upper part of the front surface of the entrance frame toward the fixed frame, and the upper part of the shutter frame is tilted toward the fixed frame. By connecting a shutter rope that can lift the shutter frame to its original position and extending the shutter rope along the towing rope to the deck side of the ship, the shutter frame is tilted toward the fixed frame and then the shutter net portion inside the shutter frame is connected. The opening operation of the inlet shutter, which is pushed to the bottom as much as possible, is first performed on the deck of the ship, and the collector with the open inlet shutter is submerged into seawater to collect egg fry in a seine net manner. Immediately after the collection work is completed, the This relates to an egg fry collector that allows the shutter frame to close the entrance of the collection net together with the shutter net again in seawater as the shutter rope is pulled from the deck of.

Description

{Gathering device of fish egg and larva and juvenile}

The present invention involves seizing a funnel-shaped fishing net sunk in seawater to a predetermined depth with a towing rope connected to a ship to catch fish eggs, larvae, fry, etc. (hereinafter referred to as "ovum fry"). ) relates to an egg fry collector that is guided to the collection bin at the rear end of the collection net.

In general, research on egg fry involves collecting and analyzing egg fry from Korea's East Sea, West Sea, South Sea, and their border waters to identify the spawning grounds of fisheries resources and migratory routes according to ocean currents after hatching, as well as the breeding grounds. Site: The main purpose is to quantitatively secure ecological data, such as the adult's feeding activity and arrival at the growth site, and analysis of the level of growth by stage and distribution density by period up to the species level, as well as its survival strategy and mother. It is also used to estimate the spawning mass of fish, and it is a very important basis for predicting the initial member resources and the fish conditions for the following year.

Research that can be conducted through the above-mentioned survey of egg fry includes a study on structural changes in the fry community by sea area and season, a study on reverse estimation of growth and spawning period through analysis of the age of fry, and a study on the predation-predation relationship through the composition of stomach contents during the fry season. , Egg Production Method (EPM) and/or Daily Egg Production Method (DEPM) research, etc., and through such research and resource surveys, it is possible to accurately determine the resource status of each fish species and the amount of resources of the mother. It is possible.

The fish eggs that are subject to the above-mentioned egg fry survey work are divided into pelagic eggs and demersal eggs, and the egg diameter of the floating fish eggs is within the range of 0.5 to 1.5 mm. In most cases, large fish eggs have an egg diameter in the range of 1.6 to 2.6 mm, and are evenly distributed throughout the entire water depth of the ocean, whereas in the case of sessile fish eggs, coastal sessile fish live on stones, reefs, or rocks. In most cases, adhesive eggs are attached in the form of lumps to the surface of clams, etc., and their egg diameter is about 7.0 to 8.0 mm, which is much larger than that of floating eggs.

In addition, the fish that are subject to research on egg fry are yolk fry (before the yolk is completely absorbed) immediately after hatching from the egg, early fry (complete absorption of the yolk ~ before bending of the notochord end), and mid-stage fry (before the notochord end is bent). They are classified into the following order: beginning of bending ~ completion of bending at the end of the notochord), and later fish (completion of bending at the end of the notochord ~ before the fin reaches its peak). Since they have little swimming ability, they are mainly distributed along the flow of ocean currents, and after the yolk is absorbed. Since they easily die if the feeding or habitat environment deteriorates, the size of the surviving juveniles becomes an important factor in determining the strength of the annual group (same-age group) in the following year.

In addition, the fry that are the subject of egg fry survey work have grown to the point where the number of fins is the same as that of adults, and their body color is different from that of adults, so it is important to secure samples of fry at the species level, and they are more likely to swim than fry. Not only is it possible to move to a preferred habitat due to its greatly developed ability, but if it goes down to the bottom of the water, collecting becomes difficult unless a dedicated net is used, and it has an excellent escape rate even in the surface layer, so it is a net-type collector with a wide entrance. (IKMT collection net with entrance frame diameter of 1.6~2.0m, mesh size of 500㎛, width of 2m, height of 2~3m) is used.

As shown in FIGS. 1 and 2, the above-described egg collecting operation involves the use of a ring-shaped inlet frame (5) at the front end entrance and rear end outlet of the funnel-shaped (conical or cylindrical + conical) collecting net (4). The collector (1), which is installed with a cylindrical collection container (6) connected to each other, is submerged in seawater to a predetermined depth, and then the collector (1) is connected to the research vessel (S) using the towing rope (2) connected to the research vessel (S). It is carried out through a seine netting process and a double netting process in which the collector (1) on which the seine work has been completed is taken back to the survey vessel (S), and the collecting methods are vertical collecting, inclined collecting, and It is divided into horizontal collection (collection by water depth layer).

The vertical collection method stops the survey vessel (S) or moves the survey vessel (S) at a slow speed according to the wind direction to reach the target water depth (usually about 10 m from the bottom of the bottom) requiring the collector (1). After doing so, a winch provided on the survey vessel (S) is used to seine and seine the collector (1) in a vertical direction up to the surface of the water. In the case of the above oblique collection and horizontal collection methods, the survey vessel ( While moving S) forward at a speed of 1.5 to 2.0 knots, the netting operation of the collector (1) is carried out, and then the collector (1) reaches the target water depth and at the same time maintains the ship speed of 20 to 30 m/min. The method is to wind the towing rope (2) at a speed of .

In the case of the above vertical collection method, the collection work is relatively simple, but because the filtration amount of seawater is relatively small, it has the disadvantage of making it difficult to accurately estimate the biomass of species with low distribution densities. In the case of the above oblique collection and horizontal collection methods, the collection is difficult. Although the work is somewhat difficult, it has the advantage of being able to accurately determine the community composition and population density of various free-living fish living in the surveyed sea area from species with low distribution densities because it can filter a large amount of seawater compared to the vertical collection method. In the oblique and horizontal collection methods, the inclination angle of the tow rope (2) when seining the collector (1) is maintained in the range of 37 to 52 degrees (45 degrees is optimal).

As described above, the collector (1) used for inclined and horizontal collection is equipped with a buoyancy adjustment buoy (8) with a connecting rope so that the collection net (4) can be adjusted to an inclined or horizontal posture together with the entrance frame (5). It is installed hanging at the rear end of the collecting container (6) by (9), and in the case of the collecting device (1) used for vertical collection, a needle will be connected and installed instead of the buoy (8), and the collecting container (6) ) is removably connected to the rear end of the collecting net (4), while a sieve (7) is provided on its body for discharging seawater and filtering (retaining) egg fry. , the towing rope (2) is connected to the entrance frame (5) at the front end of the collecting net (4) by at least two or more radial deployment ropes (3).

In addition, the egg fry collector (1) blocks the fry or fry that have entered the inside of the collection net (4) from escaping or exiting the outside of the collection net (4), allowing for more accurate collection and investigation. In order for the work to be performed, some open-and-close devices have been applied that can close the entrance to the collection net (4) in the seawater corresponding to the target depth layer. Representative examples include the VMPS (Vertical Multiple-opening Plankton Sampler) method or the MOCNESS (MOCNESS) method. One example is the Multiple Opening/Closing Net and Environmental Sensing System) type collector (1).

In addition to the VMPS or MOCNESS type collector (1) as described above, a wire connected to the collector (1) as described in Korea Utility Model Registration No. 20-0261997 (announcement date: February 6, 2002) By lowering the heavy messenger from the deck of the research vessel (S) toward the collector (1), the binding force of the inlet shutter, which was pulled to the open position, as soon as the messenger collides with the striking plate installed on the collector (1) A method is also used in which the inlet shutter is released and moves at an angle toward the collecting net (4) to close the entrance to the collecting net (4).

However, the VMPS type or MOCNESS type collector (1) as described above not only has a very complicated structure of the switchgear itself, but its installation cost is also expensive, and the operation of the collector (1) on which the switchgear is installed is also quite difficult. There was a problem, and in the case of the semi-automatic method using a messenger as a heavy object, it is relatively cheaper and easier to install and operate than the VMPS method or the MOCNESS method, but it strikes by lowering the messenger to a deep water layer along the wire connected to the collector (1). Not only is it difficult to ensure accurate response performance (closing operation) due to the nature of the operation of colliding with the plate, but if the angle of the wire is not properly maintained, the messenger cannot be lowered to the collector (1), making the closing operation of the entrance shutter itself impossible. There was a problem that occurred frequently in situations where this was done.

Republic of Korea Utility Model Registration No. 20-0261997

The present invention was developed to solve the above-described conventional problems, and includes a semicircular shutter frame and a fixed frame on the front surface of the ring-shaped entrance frame installed at the entrance side of the tip of the collecting net, and a shutter connected along the inner peripheral surface of each frame. An entrance shutter is arranged by a net, and the shutter frame and the fixed frame are separately connected to the upper and lower parts of the front surface of the entrance frame, and the shutter frame is angled from the upper part of the front surface of the entrance frame toward the fixed frame. It is installed so that it can move, and a shutter rope that can lift the shutter frame tilted toward the fixed frame to its original position is connected to the upper side of the shutter frame, and the shutter rope is extended along the towing rope to the deck side of the ship, The opening operation of the entrance shutter is first performed on the deck of the ship by tilting the shutter frame toward the fixed frame and then pushing the shutter net portion inside the shutter net as much as possible to the bottom, and collecting egg fry by sinking the collector with the open entrance shutter into seawater. The work is performed in a seine-net manner, and the shutter rope is pulled from the deck of the ship immediately after the collection work is completed, so that the shutter frame can close the entrance of the collection net together with the shutter net again in seawater. The main technical task is to provide equipment.

The present invention, as a means to solve the above technical problem, has a ring-shaped inlet frame and a cylindrical collecting tube connected to the front end inlet and the rear end outlet of the funnel-shaped collecting net, respectively, and is used for collecting fish eggs, fish, and fry. In the egg fry collector, an entrance shutter is installed on the front surface of the entrance frame to selectively open and close the entrance of the collection net, and the entrance shutter has a shutter frame that is a semicircular frame and a shutter net that has a fixed frame that is a disk-shaped blocking net. It is connected and installed on the upper and lower sides of the front face of the entrance frame, respectively, with the shutter frame interposed, and the shutter frame is installed to be angularly movable from the upper portion of the front face of the entrance frame toward the fixed frame, while the fixed frame is It is fixedly installed along the lower part of the front surface of the entrance frame, and hinged connection parts with the entrance frame are provided at the lower left and right sides of the shutter frame. At the upper side of the shutter frame, a shutter frame tilted toward the fixed frame is installed as the entrance frame. A shutter rope for pulling operation for lifting is connected to the upper part of the front surface, and the shutter rope is installed to extend to the deck side of the ship along the towing rope for the collector, or the entrance shutter is connected to the shutter frame and the shutter net. It consists only of, and is characterized in that the lower outer peripheral portion of the shutter net is connected to the entrance frame portion at the corresponding position.

In addition, the shutter frame and the fixed frame or the shutter frame and the lower entrance frame are locally connected at a minimum of 3 to a maximum of 8 places at a certain angle with the remaining outer peripheral edges except the left and right sides of the shutter net. Characterized in that it is installed, and a weight is connected and installed on the center side of the shutter net, and a pull knob is connected and installed on the front end of the shutter rope that extends along the towing rope to the deck side of the ship, and the towing rope It is characterized in that a rope holder for hanging the pull knob of the shutter rope is installed, and a total of two rope holders are installed at regular intervals along the towing rope according to the opening and closing position of the entrance shutter, and each rope holder A hanger tube through which a shutter rope passes is connected and installed on one side of a clamping body that is engaged and fixed with a towing rope, and the pull knob is manufactured to have a conical body that is fitted and fixed to the inside of the tip of the hanger tube, each of the above Among the rope holders, the hanger tube of the rope holder disposed at the closed position of the inlet shutter is characterized in that a cut passage is formed along the length of the tube body to allow the shutter rope to be inserted inside or pulled out.

In a more preferred embodiment, the shutter rope includes a first shutter rope extending from the front side of the collector to the deck side of the ship along the towing rope in a state connected to the upper side of the shutter frame, and an inlet from the upper side of the shutter frame. It consists of a second shutter rope that rotates the upper side of the frame in the shape of a "⊃" and extends along the towing rope to the deck side of the ship, and the pull knob is located on the leading edge of the first shutter rope and the second shutter rope. Each is connected and installed, and the rope holders are installed separately for the first shutter rope and the second shutter rope. The rope holders for the second shutter rope are installed at regular intervals along the tow rope according to the opening and closing position of the entrance shutter. One rope holder for the first shutter rope is installed on a random position of the towing rope between the rope holders for the second shutter rope, and among the rope holders for the second shutter rope, the entrance shutter is closed. It is characterized in that a cut passage is formed along the length of the tube body on the hanger tube of the rope holder disposed in the position so that the second shutter rope can be inserted into or pulled out from the outside, and after the upper side of the inlet frame The tension bracket of the second shutter rope is connected and installed on the side, and a rope hole providing a pivoting movement path of the second shutter rope is formed through the tension bracket in the vertical direction, and the rope of the tension bracket A guide means for the second shutter rope is provided on the front surface inside the hole, and the guide means is a round part that is gently curved along the turning direction of the second shutter rope, or a guide roller or roller bearing that rotates in engagement with the second shutter rope. It is characterized by being this.

According to the present invention as described above, the opening operation of the entrance shutter is first performed on the deck of the ship by tilting the shutter frame of the entrance shutter in the direction of the fixed frame or lower entrance frame, and then pushing the shutter net portion inside the shutter as low as possible. A collector with an open entrance shutter is sunk into seawater to collect egg fry using a seine net method. As the shutter rope is pulled from the deck of the ship immediately after the collection is completed, the shutter frame unfolds the shutter net. It is angularly moved in the upper direction so that the entrance of the collection net can be closed again in seawater. This makes the installation and operation of the entrance switch and its operation much easier, simpler, and more economical than the conventional VMPS or MOCNESS type collector. At the same time, it provides the effect of reliably guaranteeing the closing operation of the collection network entrance compared to the conventional messenger method.

In particular, the outer edge of the shutter net is locally connected to the shutter frame and the fixed frame or the shutter frame and the lower entrance frame, and a weight is applied to the center of the shutter net to tilt the shutter frame downward. The opening operation of the entrance shutter, which pushes the shutter net toward the shutter frame, can be performed more quickly and easily, and at the same time, the open state of the entrance shutter is maintained stably during the process of sinking the collector into seawater or anticipating the collector. It provides the effect of first lifting the shutter frame obliquely along the front upper side of the entrance frame using the first shutter rope, and then lifting the shutter along the upper front side of the entrance frame using the second shutter rope. By allowing the frame to be finally adhered, it provides the effect of allowing the closing operation of the entrance shutter to be performed more easily and accurately.

In addition, using the conical pull knob connected to the front end of the shutter rope and the hanger tube of the rope holder installed on the towing rope, the first shutter rope and the second shutter rope are hung on the towing rope according to the opening and closing positions of the inlet shutter. By allowing the opening and closing of the inlet shutter to be maintained more stably and not to interfere with the netting work of the collector using the towing rope, it also prevents the phenomenon of each shutter rope being unnecessarily entangled or twisted with the towing rope. By preventing this in advance, the pulling operation of the shutter rope for the closing operation of the entrance shutter also provides the effect of being performed smoothly without interference with the towing rope, and the tension bracket installed on the upper side of the rear surface of the entrance frame and applied inside it provide the effect. Using the guide means, the pulling operation of the second shutter rope can be performed more accurately and smoothly, providing a very useful effect.

Figure 1 is a schematic diagram showing the method of collecting egg fry.
Figure 2 is an external perspective view showing a conventional egg fry collector.
Figure 3 is an exploded perspective view of the main part of the egg fry collector according to the present invention.
Figure 4 is a front view of the combined state of Figure 3;
Figure 5 is a schematic side view of Figure 4;
Figure 6 is a front view showing the entrance shutter in Figure 4 in an open state.
Figure 7 is a schematic side view of Figure 6;
Figure 8 is a side view showing the closing operation of the opened inlet shutter.
Figure 9 is an enlarged cross-sectional view of portion "A" in Figure 8.
Figure 10 is a side view of the main part showing the shutter rope setting state when the entrance shutter is opened.
Figure 11 is a side view of the main part showing the shutter rope setting state when the entrance shutter is closed.
Figure 12 is a cross-sectional view taken along line BB of Figure 10.
Figure 13 is a cross-sectional view taken along line CC of Figure 10.

Hereinafter, the present invention for achieving the above object will be described in detail with reference to the attached drawings.

As shown in FIGS. 3 to 5, the egg fry collector (1) according to the present invention has a collecting net on the front surface of the ring-shaped inlet frame (5) installed at the front end entrance of the funnel-shaped collecting net (4). (4) An entrance shutter (10) is arranged to selectively open and close the entrance, and the entrance shutter (10) has a shutter frame (11) that is a semicircular frame and a fixed frame (13) that is disc-shaped. The shutter net 15 as a net is installed separately and connected to the upper and lower sides of the front surface of the entrance frame 5, while the opening and closing operation of the entrance shutter 10 is performed on the upper side of the shutter frame 11. Shutter rope (20) is connected and installed for.

The shutter frame (11) is installed to be angularly movable from the upper front side of the entrance frame (5) toward the fixed frame (13) below it, and the fixed frame (13) is of the entrance frame (5). It is fixedly connected and installed along the lower part of the front surface, and for this purpose, hinge assembly parts 12 with the entrance frame 5 are protruding from the left and right lower parts of the shutter frame 11, and the entrance frame 5 ), a hinge bracket 17 is installed on the left and right sides of the shutter frame 11 through which the hinge assembly 12 is inserted through the assembly hole 18, and an entrance frame is installed on the rear side of the fixed frame 13. 1) A plurality of fitting assembly parts 14 (a total of 3 pieces, one each on the left, right, and bottom sides in the drawing) are protruding and inserted into the assembly hole 18 on the front surface.

As described above, the method of connecting and installing the shutter frame 11 on the entrance frame 5 to enable angular movement and the method of connecting and installing the fixed frame 13 in a fixed manner on the entrance frame 5 are shown in the drawing. In addition to the method described above, various other methods can be applied, and when opening the entrance shutter 10, the shutter net 15 portion is pushed downward as shown in FIGS. 6 and 7 to remove the collection net 4. Since it is necessary to minimize the part where the entrance is obscured by the shutter net 15, rather than attaching the fixed frame 13 to the entrance frame 5, the fixed frame 13 should be spaced apart from the entrance frame 5 with a predetermined clearance. It is advisable to install it.

In addition, since the shutter frame 11 is angularly moved in the up and down directions on the front side of the entrance frame 5, the shutter is moved by the deployment rope 3 connecting the towing rope 2 with the entrance frame 5. It is desirable to ensure that the angular movement of the frame 11 is not interfered with, and for this purpose, the position where the deployment rope 3 is connected may be adjusted outside the angular movement radius of the shutter frame 11, and Figures 3 and 4 As shown by the dotted line, the binding ring 19 of the deployment rope 3 is separately installed on the outer side of the entrance frame 5 so that the connection position of the deployment rope 3 is on the outer side of the entrance frame 5. This method is also possible.

In the case of the shutter frame 11 and the fixing frame 13, it is preferable to use a stainless steel material with excellent corrosion resistance as in the entrance frame 5, and in the case of the shutter net 15, the collecting net 4 is also used. It is desirable to have a mesh of a similar size (about 500㎛), but it is desirable to have a mesh of a level that prevents the fish or fry that have entered the inside of the collecting net (4) from escaping or escaping to the outside. It is sufficient, and the shutter rope 20 may be a general rope with a smaller diameter than the towing rope 2, and if necessary, a wire line or wire rope may be used.

As briefly explained above with reference to FIGS. 6 and 7, the opening operation of the entrance shutter 10 is performed by angularly moving the shutter frame 11 toward the fixed frame 13, and then forming a roughly semi-circular shape on the inside thereof. This is performed on the deck of the ship (S) by pushing the remaining part of the shutter net (15) as far as possible toward the bottom, so that the outer peripheral edge of the shutter net (15) can be performed more quickly and easily. Rather than connecting the entire thing to the shutter frame 11 and the fixed frame 13, only a part of the outer periphery of the shutter net 15 is localized to the shutter frame 11 and the fixed frame 13 as shown in FIG. It is desirable to connect them in a functional way.

As described above, the area that locally connects the outer edge of the shutter net 15 with the shutter frame 11 and the fixed frame 13 is located at at least three locations at a certain angle along the outer edge of the shutter net 15. It is desirable to keep it within the range of a maximum of 8 locations, because if the local connection portion is less than 3 locations, the shutter frame 11 is angled upward in the open state of the entrance shutter 10 to open the entrance shutter. When re-closing (10), it is difficult for the shutter net (15) to be stably and sufficiently spread, and if the local connection area exceeds 8, the shutter frame (11) must be moved at an angle toward the fixed frame (13). This is because the task of opening the entrance of the collecting net (4) as much as possible by pushing the shutter net (15) downward becomes somewhat difficult.

Figure 4 shows a representative example in which the outer peripheral portion of the shutter net 15 is locally connected to the shutter frame 11 and the fixed frame 13 at a total of four locations at an angle of 90 degrees, and the positions are also shown. In order to maximize the convenience of pushing the shutter net 15 to the bottom, it is disposed over the remaining parts except the left and right sides of the shutter net 15, and for this purpose, the shutter frame 11 and the fixed frame are installed. (13) forms an oval-shaped frame that can be partially inscribed with the shutter net 15, rather than a completely semicircular frame.

In addition to the above method, each frame 11 (13) and the shutter net (15) are in temporary contact with the outer peripheral portion of the blocking net (15) over the entire inner peripheral surface of the shutter frame (11) and the fixed frame (13). ) There are also other methods, such as providing only the actual connection part locally, or forming a local connection part with the shutter frame 11 and the fixing frame 13 on the outer periphery of the blocking net 15. It is possible, and unlike this local connection method, a shutter net (15) with an area larger than the area of the shutter frame (11) and the fixed frame (13) in a fully unfolded state is loosely spaced between each frame (11) (13). Of course, by arranging it (loosely), it is also possible to provide an extra net that can push the shutter net 15 downward when the inlet shutter 10 is opened.

More preferably, by connecting the weight 16 to the central part of the shutter net 15, as soon as the shutter frame 11 is angularly moved toward the fixed frame 13, the shutter net 15 is moved to the weight 16. ), it is automatically pushed down a certain width along the lower direction, and the corresponding weight is also used in the process of sinking the collector (1) with the inlet shutter (10) open into seawater or in the process of forecasting the collector (1). Since the weight 16 continues to press the shutter net 15 in the downward direction, the situation in which the shutter net 15 is pushed back upward and partially blocks (blocks) the entrance of the collecting net 4 is also prevented. can do.

If the above function can be achieved, the position and number of weights 16 connected can be adjusted arbitrarily, and in Figure 4, there are a total of 2, one each on the left and right sides of the center of the shutter net 15. A representative example is the application of two weights (16). By applying the weights (16), the opening operation of the entrance shutter (10) can be performed more quickly and easily, and at the same time, the collector (1) ) from the casting net to the seine net, the open state of the entrance shutter 10 can be maintained very stably.

If necessary, the entrance shutter 10 may be composed of only the shutter frame 11 and the shutter net 15. In this case, the lower outer periphery of the shutter net 15 is the location of the fixed frame 13. It will be connected and installed on the lower part of the entrance frame (5), and only the shutter frame (11) will be installed to enable angular movement between the upper and lower front surfaces of the entrance frame (5), and this fixed frame Regardless of whether (13) is applied, the shutter rope (20) itself is designed to enable the pulling operation of lifting the shutter frame (11) to the closed position of the entrance shutter (10) in the target water depth for collecting egg fry. It will be installed extending from the upper side of the shutter frame 11 to the deck side of the ship (S).

If the shutter frame 11 can be lifted to the closed position of the entrance shutter 10 as described above, various installation methods of the shutter rope 20 may be applied, but as shown in FIGS. 3 to 8 Likewise, a first shutter rope (21) connected to the upper side of the shutter frame (11) and extending from the front side of the collector (1) to the deck side of the ship (S) along the towing rope (2), and a shutter The second shutter rope (22) turns from the upper side of the frame (11) to the upper side of the inlet frame (5) in the shape of a "⊃" shape, and then extends to the deck side of the ship (S) along the towing rope (2). ) It is most desirable to install them separately.

When the shutter rope 20 is installed by dividing it into the first shutter rope 21 and the second shutter rope 22 in the same manner as above, as shown in the direction of the solid arrow in FIG. 8, the first shutter rope ( 21), the shutter frame 11 is initially lifted obliquely along the front upper side of the entrance frame 5, and then the second shutter rope 22 is lifted as shown in the direction of the virtual arrow in FIG. 8. As the shutter frame 11 is pulled into the upper front surface of the entrance frame 5, the shutter frame 11 is finally closed to the upper front surface of the entrance frame 5. The operation can be performed accurately.

Of course, even if only one shutter rope 20 (the first shutter rope) is connected to the upper side of the shutter frame 11, the closing operation of the entrance shutter 10 itself is possible, and the representative operation process is explained. In other words, pull out the shutter rope (20) and lift the shutter frame (11) as much as possible toward the front upper side of the entrance frame (11), then slowly loosen the shutter rope (20) while moving the ship (S) forward. As a result, the shutter frame 11 is pushed toward the entrance frame 5 by the hydraulic resistance applied to the shutter net 15, and the shutter rope 20 can be fixed on the tow rope 2 at that point. Another method is to move the ship (S) backwards to the location where the collector (1) is located while pulling out the shutter rope (20).

In order to more easily and accurately perform the closing operation of the entrance shutter 10 using the single shutter rope 20 as described above, the shutter frame 11 is connected to the shutter net 15 by pulling the shutter rope 20. It is required to be lifted to the highest possible position, and for this purpose, the shutter rope 20 is lifted from the lower side of the entrance frame 5 with the shutter frame 11 tilted toward the lower side of the entrance frame 5. It is desirable to extend along the upper direction of the towing rope (2) via the deployment rope (3) shown in Figure 2, and the same applies even when using two shutter ropes (20). It is desirable.

The method of connecting the first shutter rope 21 and the second shutter rope 22 to the upper side of the shutter frame 11 is to connect the ends of each rope 21 and 22 to the upper side of the shutter frame 11. Direct connection with a rope knot is most preferable, and if necessary, a binding ring for the first shutter rope (21) and the second shutter rope (22) may be additionally provided on the upper side of the shutter frame (11). , It is desirable to apply a tension bracket 23 to the upper rear surface of the entrance frame 5 so that the swing-type pulling operation of the second shutter rope 22 can be performed more smoothly and smoothly.

It is preferable that the tension bracket (23) is made of the same material as the entrance frame (5) and fixed and installed integrally, and the front end portion of the collecting net (4) is attached to the entrance frame (23) with the tension bracket (23) interposed therebetween. 5), it is desirable to install it in connection with the bracket body, and as shown in FIG. 9, the rope hole 24 that provides a pivoting movement path for the second shutter rope 22 is located on the rear side of the tension bracket 23. It is formed to penetrate in the vertical direction, and by applying the rope hole 24, the second shutter rope 22 can accurately perform the opening and closing operation of the entrance shutter 10 without being separated from the tension bracket 23. There is.

Even more preferably, a guide means for guiding the pivoting movement of the second shutter rope 22 is provided on the front surface (left side in FIG. 9) inside the rope hole 24 of the tension bracket 23, In Figure 9, a round portion 25 that is gently curved along the turning direction of the second shutter rope 22 is provided as the guide means, but in addition, a guide roller or roller bearing that engages with the second shutter rope 22 and rotates on a shaft etc. may be installed, and the rotation axis of the guide roller or roller bearing will be installed to pass through the rope hole 24 in the left and right horizontal directions.

As an additional matter, the shutter rope (20), which extends along the towing rope (2) to the deck side of the ship (S), is hung on the towing rope (2) by adjusting the front end portion to the opening/closing position of the inlet shutter (10). It is desirable to provide a rope holder 30 that can be placed, and any type of holder structure may be applied as long as it can perform the corresponding function. However, as shown in FIGS. 10 to 13, A representative example is a hanger tube (28) through which the shutter rope (20) is connected to one side of the clamping body (27), which is detachably engaged with the towing rope (2). there is.

The clamping body 27 is a cylindrical pipe structure engaged with the outer surface of the towing rope 2, and at one end (left end in FIG. 12) is a clamping body 27 to enable position adjustment of the rope holder 30. ) is provided, and a pair of clamping ends 29 to which the clamping bolts 31 for fixing the position of the rope holder 30 are fastened are protruding from the cut portions, and the hanger tube 28 ) is formed integrally with the clamping body (27) at a position opposite the clamping end (29).

In the drawing, the hanger tube 28 is shown as having a square tube shape, but in addition, a circular tube or a polygonal tube can be used, and the inner space of the tube body provides a rope passage 32, and the shutter At the end of the rope 20, a cone-shaped pull knob 26 is installed and connected to the inside of the end of the hanger tube 28 of the rope holder 30. Of course, as long as it can be inserted and locked inside the tip of the hanger tube 28, it can have various shapes other than the cone shape.

By applying the above method, the rope holder (30) can be easily moved and fixed to the required position on the towing rope (2), and the shutter rope (20) can be adjusted to the opening/closing position of the entrance shutter (10). Not only can the pull knob (26) be stably hung on the rope holder (30), but also the pull knob (26) can be prevented from being easily separated from the rope holder (30) together with the shutter rope (20), and the entrance The pulling operation of the shutter rope 20 for closing the shutter 10 can also be easily performed while the pulling knob 26 is firmly held.

10 and 11, based on the case where the shutter rope 20 is divided into the first shutter rope 21 and the second shutter rope 22, a total of three rope holders ( 30) is installed as a representative example, and a total of two rope holders 30 for the second shutter rope 22 are installed at regular intervals along the tow rope 2 in accordance with the opening and closing positions of the inlet shutter 10. It is installed, and one rope holder 30 for the first shutter rope 21 is installed on a random position of the towing rope 2 between the rope holders 30 for the second shutter rope 22. It is done.

The reason for installing only one rope holder 30 for the first shutter rope 21 on the towing rope 2 as described above is that, as previously explained based on FIG. 8, the shutter frame 11 is installed at the entrance. The operation of pulling out the front upper part of the frame (5) and finally closing the entrance shutter (10) is performed by the second shutter rope (22), and in the case of the first shutter rope (21), the shutter frame (11) Since it is used only for the operation of lifting in the front upper direction at a certain angle, only one rope holder 30 for the first shutter rope 21 may be provided in accordance with the open position of the entrance shutter 10.

In addition, it is possible to randomly arrange the rope holder 30 for the first shutter rope 21 and the rope holder 30 for the second shutter rope 22 at any position on the tow rope 2, but Due to the structural characteristics of the shutter 10, the pulling width of the first shutter rope 21 is less than the pulling width of the second shutter rope 22, so the rope holder 30 for the first shutter rope 21 is connected to the second shutter. It is desirable to arrange it between the rope holders 30 for the rope 22 so that the pulling operation of the first shutter rope 21 and the second shutter rope 22 can be easily performed without interference between the ropes.

In order to make it easier to distinguish between the first shutter rope (21) and the second shutter rope (22) from the same perspective, each shutter rope (20) is distributed and arranged on the upper and lower sides of the tow rope (2). , it is preferable to extend it along with the towing rope (2) along the relevant position. For this purpose, the rope holder 30 for the first shutter rope 21 is installed so that the hanger tube 28 portion faces downward. It is fixedly installed on (2), and the rope holder 30 for the second shutter rope 22 is fixedly installed on the towing rope 2 with its hanger tube 28 portion facing upward.

10 shows that the pull knobs 26 of the first shutter rope 21 and the second shutter rope 22 are aligned with the corresponding rope holder ( 30) shows the state of being hung on the hanger tube 28, and shown in FIG. 11 is the first shutter rope 21 and the second shutter rope (21) according to the closing operation of the inlet shutter 10 shown in FIG. 8. This shows the state in which the pulling knob 26 of the second shutter rope 22 is finally hung on the hanger tube 28 of the rope holder 30 through the pulling operation process of 22) and the corresponding process.

As described above, in the case of the second shutter rope 22, it extends from the rope holder 30 at the rear (right end in the drawing) corresponding to the open position of the entrance shutter 10 to the front corresponding to the closed position of the entrance shutter 10. Since the position is set alternately to the rope holder 30 side (left end in the drawing), the hanger tube 28 of the rope holder 30 corresponding to the closed position of the inlet shutter 10 is provided as shown in FIG. 13. , a cut passage 33 is formed along the length of the tube body so that the second shutter rope 22 can be inserted into or pulled out of the rope passage 32 of the hanger tube 28. In the other rope holder 30, the cut-out passage 33 is not provided to prevent the shutter rope 20 from unnecessarily coming out of the hanger tube 28 together with the pull knob 26.

If the shutter rope 20 is made of a single rope, only the pair of rope holders 30 used for the second shutter rope 22 may be installed on the tow rope 2, and the first rope holder 30 may be installed on the tow rope 2. As in the method applied to the shutter rope 21, only one rope holder 30 may be installed on the towing rope 2, and the rope holder 30 has the function of hanging the shutter rope 20 at the required position. In addition, by preventing the towing rope (2) and the shutter rope (20) from being unnecessarily entangled or twisted, the pulling operation of the shutter rope (20) for the closing operation of the entrance shutter (10) can be performed smoothly without interference with the towing rope (2). It also provides functions that allow it to be performed.

According to the present invention, which has the above configuration, the shutter frame 11 of the entrance shutter 10 is tilted in the direction of the fixed frame 13 or the lower entrance frame 5, and then the shutter net 15 portion inside the shutter frame 11 is folded. The opening operation of the entrance shutter (10), which is pushed to the bottom as much as possible, is initially performed on the deck of the ship (S), and the collector (1) with the open entrance shutter (10) is sunk into seawater to anticipate the collection of egg fry. It is performed in this way, and immediately after the collection work is completed, the shutter frame (11) unfolds the shutter net (15) and moves angularly in the upper direction just by the simple operation of pulling the shutter rope (20) from the deck of the ship (S) to collect the material. The entrance to the net (4) can be closed again in seawater.

Through this, the accuracy and reliability of the collection of egg fry and the investigation work can be greatly improved by preventing the juvenile fish or fry that have entered the collection net (4) from re-exiting or escaping to the outside of the collection net (4). Not only that, but the installation and operation of the entrance switch and its operation can be performed much more easily, simply, and economically than the conventional VMPS or MOCNESS type collector (1), which provided the same function. Even compared to the messenger method, the closing operation of the entrance to the collection network (4) can be reliably guaranteed.

In addition, the outer peripheral portion of the shutter net 15 is locally connected to the shutter frame 11 and the fixed frame 13 or the shutter frame 11 and the lower entrance frame 5, and the shutter net 15 ) By applying the weight 16 to the center side, the opening operation of the entrance shutter 10, which tilts the shutter frame 11 in the downward direction and then pushes the shutter net 15 toward the shutter frame 11, is more convenient. It can be performed quickly and easily, and at the same time, the open state of the inlet shutter 10 can be stably maintained during the process of sinking the collector 1 into seawater or the process of forecasting the collector 1.

In particular, when the shutter rope (20) is installed separately into the first shutter rope (21) and the second shutter rope (22), the first shutter rope (21) is used to install the shutter rope (20) at the front upper part of the entrance frame (5). The shutter frame (11) is initially lifted obliquely along the side direction, and then the shutter frame (11) is finally brought into close contact along the upper front surface of the entrance frame (5) using the second shutter rope (22). The closing operation of the shutter 10 can be performed more easily and accurately.

As an additional matter, the first shutter rope (21) is pulled using the conical pull knob (26) connected to the front end of the shutter rope (20) and the hanger tube (28) of the rope holder (30) installed on the tow rope (2). ) and the second shutter rope (22) can be hung on the towing rope (2) in accordance with the opening and closing position of the entrance shutter (10), so that the opening and closing state of the entrance shutter (10) can be maintained more stably. At the same time, it is possible to ensure that the netting operation of the collector (1) using the tow rope (2) is not hindered by each shutter rope (20).

In addition, since the phenomenon of each shutter rope (20) being unnecessarily entangled or twisted with the towing rope (2) can be prevented in advance, the pulling operation of the shutter rope (20) for the closing operation of the entrance shutter (10) It can also be performed smoothly without interference with the towing rope (2), and the second shutter rope (22) is connected using the tension bracket (23) installed on the upper side of the rear surface of the entrance frame (5) and the guide means applied therein. The pulling operation can also be performed more accurately and smoothly.

1: Collector 2: Towing rope 3: Deployment rope
4: Collection net 5: Entrance frame 6: Collection bin
7: Sheave 8: Buoy 9: Connection rope
10: Entrance shutter 11: Shutter frame 12: Hinge assembly part
13: Fixed frame 14: Fitting assembly 15: Shutter net
16: Weight 17: Hinge bracket 18: Assembly worker
19: Binding ring 20: Shutter rope 21: First shutter rope
22: Second shutter rope 23: Tension bracket 24: Rope hole
25: Round part 26: Pulling knob 27: Clamping body
28: Hanger tube 29: Clamping end 30: Rope holder
31: clamping bolt 32: rope passage 33: cut passage

Claims (10)

In the egg fry collector used for collecting fish eggs, larvae, and fry, a ring-shaped inlet frame and a cylindrical collection container are respectively installed at the front end entrance and the rear end outlet of the funnel-shaped collection net,
An entrance shutter is installed on the front surface of the entrance frame to selectively open and close the entrance of the collecting net, and the entrance shutter has a shutter frame that is a semicircular frame and a fixed frame that is a disc-shaped blocking net with a shutter net interposed therebetween. It is connected and installed on the upper and lower sides of the front surface, respectively.
The shutter frame is installed to be angularly movable from the upper front side of the entrance frame toward the fixed frame, while the fixed frame is fixedly installed along the lower front side of the entrance frame, and is located at the lower left and right sides of the shutter frame. A hinged connection with the entrance frame is provided,
A shutter rope for pulling operation is connected to the upper side of the shutter frame to lift the shutter frame tilted toward the fixed frame to the upper part of the front face of the entrance frame, and the shutter rope extends to the deck side of the ship along the towing rope for the collector. It is installed,
The shutter rope is connected to the upper side of the shutter frame, and the first shutter rope extends along the towing rope from the front side of the collector, and turns from the upper side of the shutter frame to the upper side of the entrance frame in the shape of a "⊃". It then consists of a second shutter rope extending along the towing rope,
Pull knobs are connected to the leading ends of the first shutter rope and the second shutter rope that extend along the towing rope to the deck side of the ship, and the pull knobs of the first shutter rope and the second shutter rope are hung on the towing rope. An egg fry collector, characterized in that each rope holder that can be placed is installed. The egg fry collector according to claim 1, wherein the entrance shutter is composed only of a shutter frame and a shutter net, and the lower outer peripheral portion of the shutter net is connected to the entrance frame portion at the corresponding position. The method of claim 1 or 2, wherein the shutter frame and the fixed frame or the shutter frame and the lower entrance frame portion are localized at at least 3 to up to 8 locations with the outer peripheral portion excluding the left and right sides of the shutter net. The egg fry collector is connected and installed, and each local connection part is arranged at a certain angle range along the outer periphery of the shutter net. The egg fry collector according to claim 1 or 2, wherein a weight is connected to the central side of the shutter net. delete delete delete The method of claim 1 or 2, wherein a total of two rope holders for the second shutter rope are installed at regular intervals along the towing rope in accordance with the opening/closing position of the inlet shutter, and the rope holder for the first shutter rope is the second rope holder. One is installed at a random position on the towing rope between the rope holders for the shutter rope,
Each of the rope holders has a hanger tube through which the shutter rope passes connected to one side of a clamping body that is engaged and fixed with the towing rope, and each pull knob is fitted and fixed to the inside of the tip of the hanger tube of the rope holder. It is manufactured to have a conical body,
Among the rope holders for the second shutter rope, the hanger tube of the rope holder disposed at the closed position of the inlet shutter has a cut passage formed along the length of the tube body to allow the second shutter rope to be inserted into the inside or pulled out to the outside. An egg fry collector characterized in that. The method of claim 1 or 2, wherein a tension bracket for the second shutter rope is connected to the upper rear surface of the entrance frame, and a rope hole providing a pivoting movement path for the second shutter rope on the tension bracket. An egg fry collector characterized by penetrating in this vertical direction. The method of claim 9, wherein a guide means for the second shutter rope is provided on the front surface inside the rope hole of the tension bracket, and the guide means is a round part that is gently curved along the turning direction of the second shutter rope, or a guide means for the second shutter rope. An egg fry collector characterized by a guide roller or roller bearing that engages with a rope and rotates.

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