CN109169548B - Netting of trawl net and weaving method thereof - Google Patents
Netting of trawl net and weaving method thereof Download PDFInfo
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- CN109169548B CN109169548B CN201810955037.8A CN201810955037A CN109169548B CN 109169548 B CN109169548 B CN 109169548B CN 201810955037 A CN201810955037 A CN 201810955037A CN 109169548 B CN109169548 B CN 109169548B
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- trawl
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- 238000009941 weaving Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007493 shaping process Methods 0.000 claims description 8
- 230000037303 wrinkles Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 241000251468 Actinopterygii Species 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000366 juvenile effect Effects 0.000 description 2
- 241000143060 Americamysis bahia Species 0.000 description 1
- 241000237852 Mollusca Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Images
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04G—MAKING NETS BY KNOTTING OF FILAMENTARY MATERIAL; MAKING KNOTTED CARPETS OR TAPESTRIES; KNOTTING NOT OTHERWISE PROVIDED FOR
- D04G1/00—Making nets by knotting of filamentary material
- D04G1/02—Making nets by knotting of filamentary material in machines
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
- Woven Fabrics (AREA)
Abstract
The invention relates to a netting of a trawl, which is woven by a plurality of weaving ropes, wherein every two weaving ropes are mutually fastened to form nodes, the minimum closed unit formed by the nodes and the weaving ropes connecting the nodes is a net mesh, and the net mesh of the netting is composed of regular hexagons and rhombuses. The invention solves the problem that the trawl is easy to wrinkle in the trawl fishing process, and provides the trawl and the weaving method thereof, which can reduce mesh closure, reduce transverse mesh foot wrinkles and reduce material waste to a certain extent.
Description
Technical Field
The invention belongs to the technical field of fishing gear manufacturing and processes, and particularly relates to a netting of a trawl net and a weaving method thereof.
Background
With the development and progress of society, people have more and more understanding and application of marine resources. The existing fishing modes are many, and the trawl fishing of the trawl can actively and flexibly drag and catch fish groups, and is mainly used for oceans and inland water areas. The fishing objects mainly comprise fish, shrimps and mollusks on the bottom layer and near the bottom layer, and become a fishing mode with wider application. The net is one of the main components of the fishing gear, the basic units of the net are meshes, most of the existing meshes are diamond meshes, but the diamond meshes are easy to be stretched and closed under the action of water flow and fishery catch objects. Therefore, how to reduce mesh closure can release young fishes, protect fishery resources, reduce transverse mesh folds, reduce material waste to a certain extent, and become a problem to be solved urgently.
Disclosure of Invention
The invention solves the problem that the trawl is easy to wrinkle in the trawl fishing process, and provides the trawl and the weaving method thereof, which can reduce mesh closure, reduce transverse mesh foot wrinkles and reduce material waste to a certain extent.
The specific technical scheme of the invention is as follows:
the netting of the trawl is woven by a plurality of weaving ropes, every two weaving ropes are mutually fastened to form nodes, the minimum closed unit formed by the nodes and the weaving ropes connecting the nodes is a net mesh, and the net mesh of the netting is composed of regular hexagons and rhombuses. The meshes of the net are composed of regular hexagons and rhombuses, the combination of the regular hexagons and the rhombuses effectively avoids the defects of the regular hexagons and the rhombuses, combines the advantages of the regular hexagons and the rhombuses, has small mesh resistance glue and small total length of transverse mesh legs, and can reduce wrinkles to a certain extent; the expansion area is large, the water permeability is high, the resistance is low, juvenile fish can be released better, and fishery resources are protected; the transverse ocular foot folds can be reduced, and the material waste is reduced to a certain extent.
Preferably, two adjacent regular hexagonal meshes have a common node in the warp direction and a common edge line in the weft direction. The warp nodes are intersected, and the weft nodes are collinear, so that the strength of the netting of the trawl is ensured, and the close arrangement of the netting meshes of the trawl is ensured.
Preferably, the pattern formed by the two regular hexagonal meshes on one weft and the two regular hexagonal meshes on the adjacent weft is a rhombus. The rhombus is naturally formed in the netting weaving process.
Preferably, the distance between adjacent nodes of the netting is equal. The distances between adjacent nodes of the netting are equal, so that the uniformity of the mesh size is ensured, and the large-scale manufacturing is facilitated.
Preferably, the distance between adjacent nodes of the netting is greater than or equal to 25 cm. The distance between adjacent nodes of the netting is more than or equal to 25 cm, so that juvenile fish can be released, and fishery resources are protected.
Preferably, the side lines forming the regular hexagon mesh consist of single braided ropes and double braided ropes.
Preferably, the sidelines forming the diamond meshes are all single braided ropes.
A method for weaving a net of a trawl comprises the following steps:
the method comprises the following steps: preparing An upper cross bar, and tying and buckling 2n weaving ropes on the upper cross bar in pairs to form n nodes according to the size of the netting and the mesh, wherein the n nodes are A1, A2 and … An respectively;
step two: bifurcating the braided ropes fastened with each other, and fastening adjacent braided ropes with each other to form n +1 nodes which are respectively B1, B2 and … Bn + 1;
step three: parallel weaving ropes for a certain distance, and tying and buckling the parallel weaving ropes to form n +1 nodes which are respectively C1, C2 and … Cn + 1;
step four: the weaving ropes are branched, and the weaving ropes are fastened in pairs to form N nodes which are respectively D1, D2 and … Dn;
step five: repeating the steps, and repeating the first step, the second step, the third step and the fourth step;
step six: and taking down the netting of the woven trawl.
Preferably, the pattern formed by sequentially connecting the nodes An, Bn, Cn, Dn, Cn +1 and Bn +1 end to end is a regular hexagon.
Preferably, the upper cross bar is of a square rod-shaped structure.
The invention has the beneficial effects that:
1. the netting structure can reduce mesh closure, reduce transverse mesh foot wrinkles and reduce material waste to a certain extent;
2. the meshes of the netting disclosed by the invention are composed of regular hexagons and rhombuses, so that the defects of square meshes and rhombus meshes can be overcome, wrinkles can be reduced, and fishery resources can be protected;
3. the weaving method of the trawl netting of the invention has simple steps and easy operation, and the industrial production of the trawl netting can be realized by using the weaving method.
Drawings
FIG. 1 is a schematic view of the construction of a netting of a trawl of the present invention;
FIG. 2 is a schematic view of an apparatus for manufacturing a net of a trawl and an installation of the net of the trawl according to the present invention;
FIG. 3 is an enlarged view of section A of the present invention;
fig. 4 is a structural perspective view of the V-shaped bracket of the present invention.
In the figure: 1. go up horizontal pole, 2, V-arrangement support, 3, activity montant, 4, sheer pole, 5, fixed montant, 6, moulding pole, 7, mounting hole, 8, weave the rope, 9, screw hole, 10, support body, 11, V-arrangement muscle, 12, spacing hole, 13, installation slot, 14, public rope, 15, female rope, 16, node.
Detailed Description
The invention is further described by the following specific embodiments in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1, a net of a trawl is woven by a plurality of weaving ropes 8, the weaving ropes 8 comprise male ropes 14 and female ropes 15, the male ropes 14 and the female ropes 15 are fastened with each other to form nodes 16, the minimum closed units formed by the nodes 16 and the weaving ropes 8 are meshes, and the meshes of the net of the trawl are composed of regular hexagons and rhombuses. Two adjacent regular hexagonal meshes have a common node 16 in the warp direction and a common edge line in the weft direction. The pattern formed by the two regular hexagonal meshes on one weft and the two regular hexagonal meshes on the adjacent weft is a rhombus. The distances between the adjacent nodes 16 of the net of the trawl are equal, the distances between the two nodes of the net are both a cm, and the distance between the adjacent nodes 16 of the net of the trawl is more than or equal to 25 cm. The sidelines forming the regular hexagon mesh consist of a single braided rope 8 and two braided ropes 8, and the sidelines forming the diamond mesh are all single braided ropes 8.
As shown in fig. 3 and 4, a device for manufacturing a net of a trawl comprises an upper cross bar 1, a lower cross bar 4, a movable vertical bar 4, a fixed vertical bar 5, a V-shaped bracket 2 and a shaping bar 6.
As shown in fig. 2, 3 and 4, the upper cross rod 1 and the lower cross rod 4 are both of a square rod-shaped structure, the upper cross rod 1 and the lower cross rod 4 are both internally provided with clamping grooves which are oppositely arranged, the front surfaces of the upper cross rod 1 and the lower cross rod 4 are both provided with threaded holes 9 (according to the direction shown in fig. 3), the threaded holes 9 are of a threaded through hole structure, and the threaded holes 9 are arranged at equal intervals and the circle centers are all on the same straight line. Go up and be connected through fixed montant 5 and activity montant 3 between horizontal pole 1 and the bottom end, fixed montant 5 is located the left end of horizontal pole 1 and bottom end 4, and activity montant 3 is located the right side of fixed montant 5. The fixed vertical rod 5 is fixedly connected with the upper cross rod 1 and the lower cross rod 4, and the movable vertical rod 3 can move left and right relative to the upper cross rod 1 and the lower cross rod 4. The V-shaped support 2 comprises a support body 10 and V-shaped ribs 11, and the support body 10 and the V-shaped ribs 11 are of an integral structure. The support body 10 is of an inverted T-shaped structure, two limiting holes 12 are formed in a web portion of the T-shaped structure of the support body 10, and the limiting holes 12 are of a circular hole-shaped structure. The flange part of the support body 10 is connected with the V-shaped rib 11, the V-shaped rib 11 is of a V-shaped structure, the turning part of the V-shaped rib 11 is provided with the mounting hole 7, the mounting hole 7 is of a circular through hole structure, the aperture of the mounting hole 7 is larger than the diameter of the braided rope 8, and the mounting hole 7 is mainly used for tying the braided rope 8. The V-shaped supports 2 are arranged in the clamping grooves of the upper cross rod 1 or the lower cross rod 4 and are oppositely arranged. The V-shaped support 2 is fixed with the upper cross rod 1 and the lower cross rod 3 through positioning screws, the end, close to the nut, of each positioning screw is a threaded section, and the end, far away from the nut, of each positioning screw is a cylindrical section. The thread section of the positioning screw is meshed with the threaded hole 9, and the diameter of the cylindrical section of the positioning screw is equal to that of the limiting hole 12.
As shown in fig. 3 and 4, the fixed vertical bar 5 and the movable vertical bar 3 are both of a square rod-shaped structure, and the fixed vertical bar 5 and the movable vertical bar 3 are arranged perpendicular to the upper cross bar 1 and the lower cross bar 4. The fixed vertical rod 5 is fixedly arranged with the upper cross rod 1 and the lower cross rod 4, and the movable vertical rod 5 is locked with the upper cross rod 1 and the lower cross rod 4 through positioning screws. The fixed vertical rod 5 and the movable vertical rod 3 are relatively provided with a shaping rod 6, the shaping rod 6 is of a square rod-shaped structure, the shaping rod 6 is provided with an installation clamping groove 13, and the installation clamping grooves 13 on the two adjacent shaping rods 6 are relatively arranged.
As shown in fig. 2, 3 and 4, the V-shaped ribs 11 are fixed on the upper cross bar 1 and the lower cross bar 4 at equal intervals, the distance between the two wings of the V-shaped ribs 11 is a cm, and the included angle between the two wings of the V-shaped ribs 11 is 120 degrees. The shaping rods 6 are arranged on the fixed vertical rod 5 and the movable vertical rod 3 at equal intervals, and the distance between the shaping rods 6 is a centimeter. In this example a is 30 cm.
As shown in fig. 1 and 2, a method for weaving a net of a trawl includes:
the method comprises the following steps: preparing An upper cross bar 1, and tying and buckling 2n weaving ropes 8 on the upper cross bar 1 in pairs to form n nodes according to the size of netting and the mesh of the trawl, wherein the nodes are A1, A2 and … An respectively;
step two: the weaving ropes 8 which are mutually fastened are forked, and the adjacent weaving ropes are mutually fastened to form n +1 nodes which are respectively B1, B2 and … Bn + 1;
step three: parallel weaving ropes 8 for a certain distance, and tying the parallel weaving ropes 8 to form n +1 nodes which are respectively C1, C2 and … Cn + 1;
step four: the weaving ropes 8 are branched, and every two weaving ropes 8 are fastened to form N nodes which are respectively D1, D2 and … Dn;
step five: repeating the steps, and repeating the first step, the second step, the third step and the fourth step;
step six: and taking down the netting of the woven trawl.
Wherein, the pattern formed by sequentially connecting the nodes An, Bn, Cn, Dn, Cn +1 and Bn +1 end to end is a regular hexagon.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (4)
1. A weaving method of netting of a trawl is characterized in that the netting is woven by a plurality of weaving ropes (8), every two weaving ropes (8) are mutually fastened to form nodes (16), the minimum closed unit formed by the nodes (16) and the weaving ropes (8) connecting the nodes (16) is a mesh, the mesh of the netting is formed by regular hexagons and rhombuses, the side line forming the regular hexagons is formed by a single weaving rope (8) and two weaving ropes (8), two adjacent regular hexagons have a common node (16) in the warp direction, the weft direction has a common side line, the pattern formed by the two regular hexagons on one weft and the two regular hexagons on the adjacent weft is a rhombus, the side line forming the regular meshes is formed by a single weaving rope (8) and two weaving ropes (8), and the side lines forming the rhombuses a single weaving rope (8);
the netting of the trawl net is manufactured by adopting the following devices, and comprises an upper cross rod (1), a lower cross rod (4), a movable vertical rod (3), a fixed vertical rod (5), a V-shaped support (2) and a shaping rod (6), wherein clamping grooves are formed in the upper cross rod (1) and the lower cross rod (4), the upper cross rod (1) and the lower cross rod (4) are connected with the movable vertical rod (3) through the fixed vertical rod (5), the V-shaped support (2) comprises a support body (10) and a V-shaped rib (11), the flange part of the support body (10) is connected with the V-shaped rib (11), a mounting hole (7) is formed in the V-shaped rib (11), the mounting hole (7) is used for tying a braided rope (8), and the V-shaped support (2) is mounted in the clamping grooves of the upper cross rod (1) or the lower;
the weaving method comprises the following steps:
the method comprises the following steps: preparing An upper cross bar (1), and tying and buckling 2n weaving ropes (8) on the upper cross bar (1) in pairs to form n nodes according to the size of the netting and the mesh size, wherein the n nodes are A1, A2 and … An respectively;
step two: the braided ropes (8) which are mutually fastened and buckled are forked, and the adjacent braided ropes are mutually fastened and buckled to form n +1 nodes which are respectively B1, B2 and … Bn + 1;
step three: parallel weaving ropes (8) for a certain distance, and tying and buckling the parallel weaving ropes (8) to form n +1 nodes which are respectively C1, C2 and … Cn + 1;
step four: the weaving ropes (8) are branched, and every two weaving ropes (8) are fastened to form N nodes which are respectively D1, D2 and … Dn;
step five: repeating the steps, and repeating the first step, the second step, the third step and the fourth step;
step six: taking down the knitted netting;
the pattern formed by sequentially connecting the nodes An, Bn, Cn, Dn, Cn +1 and Bn +1 end to end is a regular hexagon.
2. Method for weaving a trawl according to claim 1, characterized in that the distance between adjacent nodes (16) of the net is equal.
3. Method for weaving a trawl according to claim 1, characterized in that the distance between adjacent nodes (16) of the net is greater than or equal to 25 cm.
4. Method for weaving a trawl according to claim 1, characterized in that the upper crossbar (1) is a square rod-like structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810955037.8A CN109169548B (en) | 2018-08-21 | 2018-08-21 | Netting of trawl net and weaving method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810955037.8A CN109169548B (en) | 2018-08-21 | 2018-08-21 | Netting of trawl net and weaving method thereof |
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| Publication Number | Publication Date |
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| CN109169548A CN109169548A (en) | 2019-01-11 |
| CN109169548B true CN109169548B (en) | 2021-05-18 |
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| CN201810955037.8A Active CN109169548B (en) | 2018-08-21 | 2018-08-21 | Netting of trawl net and weaving method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112362899B (en) * | 2020-10-09 | 2022-06-14 | 烟台大学 | Breeding cage wake environment monitoring device |
| CN112921495B (en) * | 2021-01-27 | 2024-03-15 | 山东鲁普科技有限公司 | Rope woven net for capturing and recycling unmanned surface vessel and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103262820A (en) * | 2013-06-17 | 2013-08-28 | 王钏坤 | Floating type spherical net cage |
| CN104285918A (en) * | 2014-09-23 | 2015-01-21 | 浙江海洋学院 | Selective catch separating device for trawl |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62206171A (en) * | 1986-03-06 | 1987-09-10 | ラツセル株式会社 | Reticulated structure |
| SU1701219A1 (en) * | 1988-06-13 | 1991-12-30 | Управление Мурманского Тралового Флота | Fish trawl net |
| CN2156666Y (en) * | 1993-03-08 | 1994-02-23 | 烟台海洋鱼业公司 | Fishnet |
| CN2225134Y (en) * | 1995-04-27 | 1996-04-24 | 邹永华 | Trawlnet |
| JP2000510323A (en) * | 1995-10-13 | 2000-08-15 | マートロール・インコーポレーテッド | Grid design and method for trawl net system |
| CN204259648U (en) * | 2014-11-04 | 2015-04-15 | 中国水产有限公司 | A kind of large mesh four-piece type middle layer trawl netting gear structure |
| CN205295649U (en) * | 2015-12-28 | 2016-06-08 | 福建华峰新材料有限公司 | Anti sandwich mesh cloth that tears of change polychrome |
| CN107410230B (en) * | 2017-05-18 | 2023-05-16 | 中国水产科学研究院东海水产研究所 | Small-mesh middle-layer trawl |
| CN108251962A (en) * | 2018-04-16 | 2018-07-06 | 宁波百厚网具制造有限公司 | A kind of polyester（PET lines）The net making machine of hexagon net |
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2018
- 2018-08-21 CN CN201810955037.8A patent/CN109169548B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103262820A (en) * | 2013-06-17 | 2013-08-28 | 王钏坤 | Floating type spherical net cage |
| CN104285918A (en) * | 2014-09-23 | 2015-01-21 | 浙江海洋学院 | Selective catch separating device for trawl |
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