CN110521681B - Nested type detachable trawl bag for separating catch and operation method - Google Patents
Nested type detachable trawl bag for separating catch and operation method Download PDFInfo
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- CN110521681B CN110521681B CN201910934299.0A CN201910934299A CN110521681B CN 110521681 B CN110521681 B CN 110521681B CN 201910934299 A CN201910934299 A CN 201910934299A CN 110521681 B CN110521681 B CN 110521681B
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- 241000251468 Actinopterygii Species 0.000 abstract description 17
- 238000000926 separation method Methods 0.000 abstract description 9
- 239000001963 growth medium Substances 0.000 abstract description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/02—Trawling nets
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination
- A01K61/95—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination specially adapted for fish
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Abstract
The invention discloses a nested trawl net bag capable of separating a catch and falling off and an operation method, wherein the nested trawl net bag comprises a fixed frame, a connecting frame I, a locking device I, a large net bag, a guide ring and the like; the net bags are designed into a plurality of nested net bags, and the mesh size of each net bag is different; the mesh size of the sac at the innermost layer is the largest, and the net wire is the thickest; thereby reducing the mesh size of the net sac and the diameter of the net wire in sequence from inside to outside; the mesh size of the net sac at the outermost layer is the smallest, and the net wire is the thinnest; by the mode, the separation of different sizes of the catch objects is reasonably realized, and the sorting work of workers is reduced; the fish culture medium is characterized in that the fish culture medium is divided into a plurality of layers, wherein the net lines are arranged on the outer layer, and the net lines are arranged on the outer layer.
Description
Technical Field
The invention relates to the field of marine fishery equipment, in particular to a nested trawl bag capable of separating fishery catches and falling and an operation method.
Background
The operation principle of the trawl is that a bag-type fishing net is towed by a ship to catch fishing gear in the sea area through which the fishing net passes; trawl fishing has a problem in that long towing of the trawl burdens the sac and causes the fish caught in the sac to be crushed and damaged, resulting in injury or death of the fish; there have been two patents in 2015 in songwawei, namely, "trawl with parallel groups of bags and catching method thereof (patent No. CN 201310407977)" and "trawl with serial groups of bags and catching method thereof (patent No. CN 201310407953)", and the problem is alleviated by using a plurality of bags to drop off in sequence to reduce the dragging time of each bag, but the fishery harvested materials entering the trawl are not well differentiated, i.e. fishes, shrimps and crabs passing through the trawl are generally dragged into the trawl regardless of the size, so a technology is needed to make up for the deficiency.
Disclosure of Invention
The invention aims to provide a nested trawl bag capable of separating fish catches and falling and an operation method, which aim to solve the problem that fish catches entering the trawl are not well distinguished in the background technology, namely fishes, shrimps and crabs passing through the trawl are usually dragged into a tuck net no matter the size of the fish catches, the shrimps and the crabs passes through the trawl net.
In order to achieve the purpose, the invention provides the following technical scheme: a nested type trawl bag capable of separating fisheries and falling comprises a towline and is characterized by further comprising a fixed frame, a first connecting frame, a first locking device, a first tightening device, a second connecting frame, a second locking device, a first fixing ring, a second fixing ring, a fine net bag, a middle net bag, a large net bag and a guide ring; the left edge of the fixed frame is fixedly connected with the right end part of the warp, and a plurality of guide rings are uniformly and fixedly connected on the warp; the first connecting frame is fixedly connected to the outside of the fixed frame through a plurality of first locking devices, and a first tightening device is fixedly connected to the outer side of the first connecting frame; the second connecting frame is positioned on the inner side of the first connecting frame, the second connecting frame is fixedly connected to the outside of the fixed frame through a plurality of second locking devices, and a second tightening device is fixedly connected to the outer side of the second connecting frame; the left opening of the fine mesh bag is fixedly connected to the right edge of the connecting frame I, and a plurality of fixing rings I are uniformly and fixedly connected to the outer part of the left longitudinal section of the fine mesh bag; the middle mesh bag is positioned on the inner side of the fine mesh bag, the left opening of the middle mesh bag is fixedly connected to the right edge of the second connecting frame, and a plurality of second fixing rings are uniformly and fixedly connected to the outer part of the left longitudinal section of the middle mesh bag; the large net bag is positioned at the inner side of the middle net bag, and the left opening of the large net bag is fixedly connected with the right opening of the fixed frame; the right side tightening ropes of the tightening devices are sequentially connected in series to the corresponding first fixing rings in an annular mode, and the right side end portions of the tightening ropes are fixedly connected to the first fixing rings which are penetrated for the first time; the right side end of the tightening rope is fixedly connected to the second fixing ring which passes through the second fixing ring for the first time; and the pull ropes in the first locking device and the second locking device are connected with the fishing boat sequentially through the corresponding guide rings.
Preferably, the first locking device and the second locking device have the same structure.
Preferably, the first locking device comprises a shell, a first guide wheel, a second guide wheel, a pull rope, a spring and a bolt; the first guide wheel and the second guide wheel are respectively movably connected inside the left lower side of the shell; the spring bolt is vertically and movably connected to the upper side inside the shell, a spring is arranged between the bottom surface of the spring bolt and the bottom surface inside the shell, and the upper side of the spring bolt is connected with a corresponding lock hole in one inner side of the connecting frame; and the right side end of the pull rope is fixedly connected with the center of the bottom surface of the lock tongue through a first guide wheel and a second guide wheel in sequence.
Preferably, the right side of the guide wheel II is positioned right below the center of the bottom surface of the lock bolt.
Preferably, the second tightening device has the same structure as the first tightening device, and the specific structure of the first tightening device comprises a fixed shell, an inner cavity, a clamping block, a fixed pin, a first pulley block, a second pulley block, a first one-way wheel, a first one-way bearing, a tightening rope, a second one-way bearing and a second one-way wheel; the fixture block is fixedly connected in a corresponding position of the fixed frame through the fixing pin; the inner cavity is arranged in the fixed shell, the center of the left side of the inner cavity is fixedly connected with a first pulley block, and the center of the right side of the inner cavity is fixedly connected with a second pulley block; the center of the first one-way wheel is fixedly connected to the lower side of the inner part of the right side of the fixed shell, and the outer part of the first one-way wheel is fixedly connected with the first one-way wheel; the center of the one-way bearing II is fixedly connected to the upper side of the inner part of the right side of the fixed shell, and the outer part of the one-way bearing II is fixedly connected with a one-way wheel II; and the left end of the tightening rope is fixedly connected with the center of the right side of the clamping block through a second one-way wheel, a first one-way wheel, a pulley block II internal pulley, an inner cavity and a pulley block I internal pulley in sequence.
Preferably, the tightening rope is wound clockwise for several turns after the one-way pulley II and then wound anticlockwise for several turns to pass through the one-way pulley I.
Preferably, the cinch cord in the lumen is disposed in a serpentine arrangement.
A nested operation method for separating a trawl bag from which a catch can fall comprises the following steps:
A. putting the trawl net bag into water, starting a fishing boat to open the trawl net bag to start towing and fishing operation;
B. after the fishing operation is carried out for a certain time, the mesh sizes of the small net sacs, the middle net sacs and the large net sacs are different, so that the separation of different sizes of the catch is realized, and then the first locking device and the second locking device are pulled in sequence to separate the small net sacs and the middle net sacs;
C. b, pulling a middle pull rope of the locking device I to separate the connecting frame I from the fixed frame and keep away from the trawl which continues to advance for fishing operation, and starting the first tightening device, wherein the pull rope can be continuously pulled to close the left opening of the fine net bag after the tightening rope in the inner cavity is completely pulled out, so that all the fishery catch objects are positioned in the fine net bag, and the separation and closing of the middle net bag are completed in the same way;
D. and finally, directly dragging the fixed frame and the large net bag to a fishing boat through the trawl line, and sequentially dragging the middle net bag and the fine net bag to the fishing boat through the pull rope to finish the operation.
Compared with the prior art, the invention provides a nested trawl bag capable of separating a catch and dropping and an operation method, and the nested trawl bag has the following beneficial effects:
(1) the net bags are designed into a plurality of nested net bags, and the mesh size of each net bag is different; the mesh size of the sac at the innermost layer is the largest, and the net wire is the thickest; thereby reducing the mesh size of the net sac and the diameter of the net wire in sequence from inside to outside; the mesh size of the net sac at the outermost layer is the smallest, and the net wire is the thinnest; through this kind of mode, rationally realize the separation to different catch sizes, alleviate staff's letter sorting work.
(2) The fish culture medium is characterized in that the fish culture medium is divided into a plurality of layers, wherein the net lines are arranged on the outer layer, and the net lines are arranged on the outer layer.
(3) The one-way bearing arranged in the tightening device ensures that the pull rope can only be pulled in one direction, and also ensures that the pull rope cannot be automatically opened after the opening of the net bag is sealed, thereby ensuring that all the catch objects are positioned in the net bag and avoiding loss.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the locking device;
FIG. 3 is a schematic view of the tightening mechanism;
in the figure: 1-tracings; 2-a fixed frame; 3-connecting the frame one; 4-locking the first device; 5-tightening the first device; 6-tightening the second device; 7-connecting the frame II; 8-locking device II; 9-fixing the ring I; 10-fixing a ring II; 11-fine mesh sac; 12-middle mesh bag; 13-large net sac; 14-a guide ring; 41-a housing; 42-a first guide wheel; 43-guide wheel II; 44-a pull rope; 45-spring; 46-a locking tongue; 51-a stationary housing; 52-lumen; 53-a fixture block; 54-a fixation pin; 55-a first pulley block; 56-pulley block two; 57-one-way wheel one; 58-one-way bearing I; 59-tightening the rope; 510-one-way bearing II; 511-one-way wheel two.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a technical solution: a nested type trawl bag capable of separating fisheries and falling comprises a warp 1, a fixed frame 2, a first connecting frame 3, a first locking device 4, a first tightening device 5, a second tightening device 6, a second connecting frame 7, a second locking device 8, a first fixing ring 9, a second fixing ring 10, a fine net bag 11, a middle net bag 12, a large net bag 13 and a guide ring 14; the left edge of the fixed frame 2 is fixedly connected with the right end part of the warp 1, and a plurality of guide rings 14 are uniformly and fixedly connected on the warp 1; the connecting frame I3 is fixedly connected to the outside of the fixed frame 2 through a plurality of locking devices I4, and a tightening device I5 is fixedly connected to the outer side of the connecting frame I3; the second connecting frame 7 is positioned on the inner side of the first connecting frame 3, the second connecting frame 7 is fixedly connected to the outer part of the fixed frame 2 through a plurality of second locking devices 8, and the outer side of the second connecting frame 7 is fixedly connected with a second tightening device 6; the left opening of the fine mesh bag 11 is fixedly connected to the right edge of the first connecting frame 3, and a plurality of first fixing rings 9 are uniformly and fixedly connected to the outer part of the left longitudinal section of the fine mesh bag 11; the middle mesh bag 12 is positioned on the inner side of the fine mesh bag 11, the left opening of the middle mesh bag 12 is fixedly connected to the right edge of the second connecting frame 7, and a plurality of second fixing rings 10 are uniformly and fixedly connected to the outer part of the left longitudinal section of the middle mesh bag 12; the large net bag 13 is positioned at the inner side of the middle net bag 12, and the left opening of the large net bag 13 is fixedly connected with the right opening of the fixed frame 2; the right side of the first tightening device 5 is sequentially connected in series to the corresponding first fixing rings 9 in an annular manner, and the right side end of the tightening rope is fixedly connected to the first fixing ring 9 which passes through the first fixing ring for the first time; the right tightening ropes of the second tightening devices 6 are sequentially connected in series to the corresponding second fixing rings 10 in an annular mode, and the right end portions of the tightening ropes are fixedly connected to the second fixing rings 10 which are penetrated for the first time; and the pull ropes in the first locking device 4 and the second locking device 8 are connected with the fishing boat sequentially through the corresponding guide rings 14.
The first locking device 4 and the second locking device 8 are identical in structure.
As shown in fig. 2, the first locking device 4 specifically includes a housing 41, a first guide wheel 42, a second guide wheel 43, a pull rope 44, a spring 45 and a latch 46; the guide wheel I42 and the guide wheel II 43 are respectively movably connected inside the left lower side of the shell 41; the bolt 46 is vertically and movably connected to the upper side inside the shell 41, a spring 45 is arranged between the bottom surface of the bolt 46 and the bottom surface inside the shell 41, and the upper side of the bolt 46 is connected with a corresponding lock hole in the inner side of the first connecting frame 3; the right end of the pull rope 44 is fixedly connected with the center of the bottom surface of the bolt 46 through a guide wheel I42 and a guide wheel II 43 in sequence.
The right side of the second guide wheel 43 is positioned right below the center of the bottom surface of the bolt 46.
As shown in fig. 3, the second tightening device 6 has the same structure as the first tightening device 5, and the specific structure of the first tightening device 5 includes a fixed housing 51, an inner cavity 52, a latch 53, a fixed pin 54, a first pulley block 55, a second pulley block 56, a first freewheel 57, a first one-way bearing 58, a tightening rope 59, a second one-way bearing 510, and a second one-way wheel 511; the clamping block 53 is fixedly connected in the corresponding position of the fixed frame 2 through a fixing pin 54; the inner cavity 52 is arranged inside the fixed shell 51, the center of the left side of the inner cavity 52 is fixedly connected with a first pulley block 55, and the center of the right side of the inner cavity 52 is fixedly connected with a second pulley block 56; the center of the first one-way wheel 57 is fixedly connected to the lower side of the inside of the right side of the fixed shell 51; the center of the second one-way bearing 510 is fixedly connected to the upper side of the inside of the right side of the fixed shell 51, and the outside of the second one-way bearing 510 is fixedly connected with a second one-way wheel 511; the left end of the tightening rope 59 is fixedly connected with the center of the right side of the fixture block 53 through a second one-way wheel 511, a first one-way wheel 57, a pulley in a second pulley block 56, the inner cavity 52 and a pulley in a first pulley block 55.
Wherein, the tightening rope 59 is wound clockwise for several turns after the second one-way wheel 511 and then wound anticlockwise for several turns through the first one-way wheel 57; the cinch cord 59 within the lumen 52 is disposed in a serpentine arrangement.
A nested operation method for separating a trawl bag from which a catch can fall comprises the following steps:
A. putting the trawl net bag into water, starting a fishing boat to open the trawl net bag to start towing and fishing operation;
B. after the fishing operation is carried out for a certain time, the mesh sizes of the small net bag 11, the middle net bag 12 and the large net bag 13 are different, so that the separation of different sizes of the catch is realized, and then the first locking device 4 and the second locking device 8 are pulled in sequence to separate the small net bag 11 and the middle net bag 12;
c, pulling the pull rope 44 in the locking device I4 in the step B to separate the connecting frame I3 from the fixed frame 2 and keep away from the trawl which continues to advance for fishing operation, and meanwhile, starting the tightening device I5, when the tightening rope 59 in the inner cavity 52 is completely pulled out, continuing to pull the pull rope 44 to close the left opening of the fine mesh bag 11, ensuring that all the fisheries are located in the fine mesh bag 11, and similarly, completing the separation and closing of the fine mesh bag 12;
D. finally, the fixed frame 2 and the large net bag 13 are directly towed to a fishing boat through the towing line 1, and then the middle net bag 12 and the fine net bag 11 are sequentially towed to the fishing boat through the pulling rope to complete the operation.
The working principle is as follows: when fishing, firstly putting the trawl net bag into water, starting a fishing boat to open the trawl net bag to start towing fishing, realizing the separation of different sizes of the catch due to different mesh sizes of the net bags of the fine net bag 11, the middle net bag 12 and the large net bag 13, and then sequentially pulling the locking device I4 and the locking device II 8 to separate the fine net bag 11 and the middle net bag 12; pulling the pull rope 44 in the locking device I4 can separate the connecting frame I3 from the fixed frame 2 and keep away from the trawl which continues to advance for fishing operation, and meanwhile, the tightening device I5 can be started, when the tightening rope 59 in the inner cavity 52 is completely pulled out, the pull rope 44 can be continuously pulled to close the left opening of the fine mesh bag 11, so that all the fishery objects are ensured to be positioned in the fine mesh bag 11, and the separation and closing of the middle mesh bag 12 are completed in the same way; finally, the fixed frame 2 and the large net bag 13 are directly towed to a fishing boat through the towing line 1, and then the middle net bag 12 and the fine net bag 11 are sequentially towed to the fishing boat through the pull rope to complete the operation; the net bags are designed into a plurality of nested net bags, and the mesh size of each net bag is different; the mesh size of the sac at the innermost layer is the largest, and the net wire is the thickest; thereby reducing the mesh size of the net sac and the diameter of the net wire in sequence from inside to outside; the mesh size of the net sac at the outermost layer is the smallest, and the net wire is the thinnest; by the mode, the separation of different sizes of the catch is reasonably realized, the sorting work of workers is reduced, and then the catch starts to fall off from the outermost layer when falling off, and the falling off time is set according to a certain time sequence; the outermost layer is loaded with smaller fishes due to the thinnest mesh wire, the tolerance of small-volume fishes is lower than that of large-volume fishes, the fishes die more easily, and the survival capability of the large-volume fishes is relatively strong; the shedding sequence just accords with the rule, and the death of the fishes is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A nested trawl net bag capable of separating fisheries and falling comprises a warp line (1), and is characterized by further comprising a fixed frame (2), a first connecting frame (3), a first locking device (4), a first tightening device (5), a second tightening device (6), a second connecting frame (7), a second locking device (8), a first fixing ring (9), a second fixing ring (10), a fine net bag (11), a middle net bag (12), a large net bag (13) and a guide ring (14);
the left edge of the fixed frame (2) is fixedly connected with the right end part of the warp (1), and a plurality of guide rings (14) are uniformly and fixedly connected on the warp (1);
the connecting frame I (3) is fixedly connected to the outside of the fixed frame (2) through a plurality of locking devices I (4), and a tightening device I (5) is fixedly connected to the outer side of the connecting frame I (3);
the second connecting frame (7) is positioned on the inner side of the first connecting frame (3), the second connecting frame (7) is fixedly connected to the outer part of the fixed frame (2) through a plurality of second locking devices (8), and the outer side of the second connecting frame (7) is fixedly connected with a second tightening device (6);
the left opening of the fine mesh bag (11) is fixedly connected to the right edge of the connecting frame I (3), and a plurality of fixing rings I (9) are uniformly and fixedly connected to the outer part of the left longitudinal section of the fine mesh bag (11);
the middle mesh bag (12) is positioned on the inner side of the fine mesh bag (11), the left opening of the middle mesh bag (12) is fixedly connected to the right edge of the second connecting frame (7), and a plurality of second fixing rings (10) are uniformly and fixedly connected to the outer part of the left longitudinal section of the middle mesh bag (12);
the large net bag (13) is positioned at the inner side of the middle net bag (12), and the left opening of the large net bag (13) is fixedly connected with the right opening of the fixed frame (2);
the right side of the first tightening device (5) is annularly and sequentially connected in series into the corresponding first fixing rings (9), and the right side end of the tightening rope is fixedly connected to the first fixing ring (9) which is penetrated for the first time;
the right side tightening ropes of the second tightening devices (6) are sequentially connected in series to the corresponding second fixing rings (10) in an annular mode, and the right side end portions of the tightening ropes are fixedly connected to the second fixing rings (10) which are penetrated for the first time;
the pull ropes in the first locking device (4) and the second locking device (8) are connected with the fishing boat sequentially through corresponding guide rings (14);
the first locking device (4) and the second locking device (8) have the same structure;
the locking device I (4) comprises a shell (41), a guide wheel I (42), a guide wheel II (43), a pull rope (44), a spring (45) and a lock tongue (46);
the guide wheel I (42) and the guide wheel II (43) are respectively movably connected inside the left lower side of the shell (41);
the lock tongue (46) is vertically and movably connected to the upper side inside the shell (41), a spring (45) is arranged between the bottom surface of the lock tongue (46) and the bottom surface inside the shell (41), and the upper side of the lock tongue (46) is connected with a corresponding lock hole in the inner side of the first connecting frame (3); the right end part of the pull rope (44) is fixedly connected with the center of the bottom surface of the bolt (46) through a guide wheel I (42) and a guide wheel II (43) in sequence.
2. The nested breakaway catch fish-dropping trawl bag according to claim 1, wherein: the right side of the second guide wheel (43) is positioned right under the center of the bottom surface of the bolt (46).
3. The nested breakaway catch fish-dropping trawl bag according to claim 1, wherein: the structure of the second tightening device (6) is the same as that of the first tightening device (5), and the specific structure of the first tightening device (5) comprises a fixed shell (51), an inner cavity (52), a clamping block (53), a fixing pin (54), a first pulley block (55), a second pulley block (56), a first one-way wheel (57), a first one-way bearing (58), a tightening rope (59), a second one-way bearing (510) and a second one-way wheel (511); the clamping block (53) is fixedly connected in a corresponding position of the fixed frame (2) through a fixing pin (54);
the inner cavity (52) is arranged inside the fixed shell (51), the center of the left side of the inner cavity (52) is fixedly connected with a first pulley block (55), and the center of the right side of the inner cavity (52) is fixedly connected with a second pulley block (56);
the center of the first one-way wheel (57) is fixedly connected to the lower side of the inside of the right side of the fixed shell (51), and the outside of the first one-way wheel (57) is fixedly connected with the first one-way wheel (57);
the center of the second one-way bearing (510) is fixedly connected to the upper side of the inside of the right side of the fixed shell (51), and the outside of the second one-way bearing (510) is fixedly connected with a second one-way wheel (511);
the left end of the tightening rope (59) is fixedly connected with the center of the right side of the clamping block (53) through a second one-way wheel (511), a first one-way wheel (57), a pulley block (56) inside, an inner cavity (52) and a pulley block (55) inside in sequence.
4. A nested breakaway catch fall trawl bag according to claim 3, wherein: the tightening rope (59) is wound clockwise for a plurality of turns and then anticlockwise for a plurality of turns after the one-way wheel II (511) and passes through the one-way wheel I (57).
5. A nested breakaway catch fall trawl bag according to claim 3, wherein: the cinch cord (59) within the lumen (52) is disposed in a serpentine arrangement.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110143506.8A CN112956454B (en) | 2019-09-29 | 2019-09-29 | Operation method for nested separated fishing catch object and capable of falling off trawl bag |
| CN201910934299.0A CN110521681B (en) | 2019-09-29 | 2019-09-29 | Nested type detachable trawl bag for separating catch and operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910934299.0A CN110521681B (en) | 2019-09-29 | 2019-09-29 | Nested type detachable trawl bag for separating catch and operation method |
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| CN202110143506.8A Division CN112956454B (en) | 2019-09-29 | 2019-09-29 | Operation method for nested separated fishing catch object and capable of falling off trawl bag |
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| CN110521681A CN110521681A (en) | 2019-12-03 |
| CN110521681B true CN110521681B (en) | 2021-06-08 |
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| CN201910934299.0A Active CN110521681B (en) | 2019-09-29 | 2019-09-29 | Nested type detachable trawl bag for separating catch and operation method |
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|---|---|---|---|---|
| CN111972360A (en) * | 2020-09-01 | 2020-11-24 | 中国水产科学研究院南海水产研究所 | Special catching and expanding net for acete chinensis |
| CN111972361B (en) * | 2020-09-01 | 2022-04-29 | 中国水产科学研究院南海水产研究所 | Marine nuclear power station intake shrimp interception net |
| CN116076455A (en) * | 2022-09-13 | 2023-05-09 | 浙江海洋大学 | Fishing boat trawl with but quick separation net bag |
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| CN103478089B (en) * | 2013-09-09 | 2015-07-01 | 浙江海洋学院 | Trawl net with a plurality of parallel bag sets and catching method thereby |
| CN203523584U (en) * | 2013-09-09 | 2014-04-09 | 浙江海洋学院 | Drag net with multiple sets of parallel bags |
| CN104285918B (en) * | 2014-09-23 | 2016-08-24 | 浙江海洋学院 | Dragging span fishery harvesting segregation apparatus |
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| CN207476717U (en) * | 2017-11-03 | 2018-06-12 | 浙江海洋大学 | A kind of trawlnet fish shrimp separating device |
| CN208581732U (en) * | 2018-06-06 | 2019-03-08 | 杨孝民 | A kind of bottom, which closes up to fish, revolves net |
| CN109077033A (en) * | 2018-08-30 | 2018-12-25 | 上海海洋大学 | A kind of multi-joint quantitative sampling net of fish-egg larva and juvenile |
| CN209185450U (en) * | 2018-12-04 | 2019-08-02 | 浙江海洋大学 | A kind of combined bio trawling gear |
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2019
- 2019-09-29 CN CN202110143506.8A patent/CN112956454B/en active Active
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| CN110521681A (en) | 2019-12-03 |
| CN112956454A (en) | 2021-06-15 |
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