CN112790167A - Round trawl net - Google Patents
Round trawl net Download PDFInfo
- Publication number
- CN112790167A CN112790167A CN201911105299.6A CN201911105299A CN112790167A CN 112790167 A CN112790167 A CN 112790167A CN 201911105299 A CN201911105299 A CN 201911105299A CN 112790167 A CN112790167 A CN 112790167A
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- Prior art keywords
- rope
- net
- meshes
- mesh
- trawl
- Prior art date
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- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims description 15
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 241000251468 Actinopterygii Species 0.000 description 11
- 238000009941 weaving Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The invention relates to a surrounding trawl, which comprises a trawl body, wherein the trawl body comprises a woven net, an upper enclosing rope, a lower enclosing rope, a left arched hand net and a right arched hand net, the woven net is provided with a demarcation rope arranged between the upper enclosing rope and the lower enclosing rope, a plurality of upper mesh areas which are woven between the upper enclosing rope and the demarcation rope and are transversely parallel, and a plurality of lower mesh areas which are woven between the lower enclosing rope and the demarcation rope and are transversely parallel; each upper mesh area is provided with a plurality of first rhombic meshes, each lower mesh area is provided with a plurality of second rhombic meshes, the first rhombic meshes and the second rhombic meshes are arranged in a mutually reverse mode, and the sizes of the first rhombic meshes in the upper mesh areas and the sizes of the second rhombic meshes in the lower mesh areas are gradually decreased from the left arched hand net to the right arched hand net towards the middle direction. The technical scheme of the invention can make the purse net of the purse net smoother.
Description
Technical Field
The present invention relates to a fishing net for fishing, and more particularly to a trawl net.
Background
The traditional fishing net is mainly formed by weaving net wires into a plurality of meshes, and the size of the meshes is smaller than that of fishes to be captured, so when a fishing boat pulls the fishing net to capture fishes, the fishes to be captured enter the fishing net and are not easy to escape from the meshes, finally, the fishing net and the captured fish swarm are recovered to the boat by means of net recovery, and then the fishes to be captured are searched from the captured fish swarm.
However, the fishing net has the following disadvantages that the fishing net is large in volume and heavy in weight, and if a plurality of meshes cannot be folded and gathered together in the net folding process, the fishing net cannot be folded and has a large storage space, so that the fishing net is not convenient for subsequent fishing or finishing of the fishing net and is very popular.
Disclosure of Invention
The invention provides a purse net, which utilizes the effect that when a fishing net body is retracted, a plurality of first diamond meshes and a plurality of second diamond meshes can be automatically retracted and gathered together, thereby achieving the effects of reducing the retracted volume of the fishing net and improving the smoothness of retracting the fishing net.
In an embodiment of the present invention, the present invention provides a trawl comprising: the fishing net body comprises a woven net, an upper enclosing rope, a lower enclosing rope, a left arching hand net and a right arching hand net, wherein the upper enclosing rope, the lower enclosing rope, the left arching hand net and the right arching hand net are sequentially arranged on the upper side, the lower side, the left side and the right side of the woven net; each upper mesh area is provided with a plurality of first rhombic meshes, each lower mesh area is provided with a plurality of second rhombic meshes, the first rhombic meshes and the second rhombic meshes are arranged in opposite directions by taking the dividing rope as a reference, the sizes of the first rhombic meshes of the upper mesh areas are gradually reduced from the left arched hand net and the right arched hand net towards the middle mesh section, and the sizes of the second rhombic meshes of the lower mesh areas are gradually reduced from the left arched hand net and the right arched hand net towards the middle mesh section.
Based on the above, the plurality of first diamond-shaped meshes and the plurality of second diamond-shaped meshes are arranged in a mutually reverse direction by taking the demarcation rope as a reference, so when the fishing net body is drawn, the plurality of first diamond-shaped meshes and the plurality of second diamond-shaped meshes can be drawn close to the middle of the woven net, and the net drawing smoothness of the trawl net is enhanced.
Based on the above, each first separation rope is an inclined line gradually approaching the middle net section from the boundary rope to the upper enclosing rope, and each second separation rope is an inclined line gradually approaching the middle net section from the boundary rope to the lower enclosing rope, so as to guide the upper net areas and the lower net areas to be folded along the folding direction to the middle net section, and the trawl net is more smooth when being folded.
Drawings
Fig. 1 is a schematic view of the use state of the trawl net of the present invention.
Fig. 2 is a partially enlarged schematic view of a trawl according to the present invention.
Fig. 3 is another enlarged partial schematic view of the trawl according to the present invention.
Fig. 4 is a schematic view of a trawl according to another embodiment of the present invention.
Wherein, the reference numbers:
10 … round trawl net
1 … fishing net body
2 … knitted net
21 … demarcation rope
22 … mesh area
221 … first diamond mesh
23 … lower mesh zone
231 … second diamond mesh
24 … first separating rope
25 … second separation rope
3 … Upper rope
4 … lower enclosing rope
5 … left arch net
6 … right arch net
7 … intermediate network segment
100 … fishing boat
200 … fish school
Detailed Description
The following detailed description and technical contents of the present invention will be described with reference to the drawings, which are provided for illustrative purposes only and are not intended to limit the present invention.
Referring to fig. 1 to 3, the present invention provides a purse seine, which is suitable for a purse seine and a trawl and mainly uses a fishing boat 100 to pull a fishing net 10 to capture a fish group 200, wherein the purse seine 10 mainly comprises a fishing net body 1.
As shown in fig. 1 to 3, the fishing net body 1 is formed by weaving a plurality of weaving ropes (no reference numeral), the fishing net body 1 includes a weaving net 2, and an upper enclosing rope 3, a lower enclosing rope 4, a left arching net 5 and a right arching net 6 which are sequentially enclosed on the upper, lower, left and right sides of the weaving net 2, the middle of the weaving net 2 has a middle net section 7, the weaving net 2 further has a dividing rope 21 which is arranged between the upper enclosing rope 3 and the lower enclosing rope 4, a plurality of upper net mesh areas 22 which are woven between the upper enclosing rope 3 and the dividing rope 21 and are transversely arranged, and a plurality of lower net mesh areas 23 which are woven between the lower enclosing rope 4 and the dividing rope 21 and are transversely arranged.
Each upper mesh zone 22 has a plurality of first diamond-shaped meshes 221, each lower mesh zone 23 has a plurality of second diamond-shaped meshes 231, the plurality of first diamond-shaped meshes 221 and the plurality of second diamond-shaped meshes 231 are arranged in opposite directions with the dividing rope 21 as a reference, the sizes of the first diamond-shaped meshes 221 of the plurality of upper mesh zones 22 are gradually decreased from the left arched hand mesh 5 and the right arched hand mesh 6 towards the middle mesh zone 7, and the sizes of the second diamond-shaped meshes 231 of the plurality of lower mesh zones 23 are gradually decreased from the left arched hand mesh 5 and the right arched hand mesh 6 towards the middle mesh zone 7.
As shown in fig. 3, the weaving direction of the first diamond-shaped meshes 221 is opposite to the weaving direction of the second diamond-shaped meshes 231, and the number and positions of the upper mesh zones 22 and the lower mesh zones 23 are the same, so that the first diamond-shaped meshes 221 and the second diamond-shaped meshes 231 are arranged in opposite directions and symmetrically with respect to the dividing line 21.
In addition, the sizes of the first diamond-shaped meshes 221 of the two adjacent upper mesh zones 22 and the second diamond-shaped meshes 231 of the two adjacent lower mesh zones 23 are changed as follows, a first separation rope 24 is arranged between the two adjacent upper mesh zones 22, the side of the first diamond-shaped mesh 221 positioned on one side of the first separation rope 24 is formed by the side of the two adjacent first diamond-shaped meshes 221 on the other side, a second separation rope 25 is arranged between the two adjacent lower mesh zones 23, and the side of the second diamond-shaped mesh 231 positioned on one side of the second separation rope 25 is formed by the side of the two adjacent second diamond-shaped meshes 231 on the other side.
Furthermore, each first separation rope 24 is an inclined line gradually approaching the middle net section 7 from the boundary rope 21 to the upper surrounding rope 3, and each second separation rope 25 is an inclined line gradually approaching the middle net section 7 from the boundary rope 21 to the lower surrounding rope 4.
The size of each first diamond-shaped mesh 221 and the size of each second diamond-shaped mesh 231 are between 0.9 meter and 30 meters, the mesh size of the intermediate net section 7 is smaller than the size of each first diamond-shaped mesh 221 and the size of each second diamond-shaped mesh 231, and the fish school 200 is mainly concentrated in the intermediate net section 7 during encirclement, so the mesh size of the intermediate net section 7 is small, and the fish school 200 can be prevented from slipping away from the meshes.
As shown in fig. 1, the upper rope 3 is a rope body that can float on the sea surface, and the present embodiment is described by taking a plastic rope as an example, but not limited thereto. Wherein, go up the upper purse line 3 and connect in the higher authority of fishing net body 1 to do benefit to and let go up purse line 3 float in the sea.
As shown in fig. 1, the lower apron rope 4 is a rope body that can be submerged in the sea, and the present embodiment is described by taking a nylon rope as an example, but not limited thereto. Wherein, enclose rope 4 down and connect in the lower level of fishing net body 1 to do benefit to and let enclose rope 4 sink in the sea down, and can enclose rope 3 and pull out fishing net body 1 stay relatively for last, and do benefit to and enclose going on of fishing shoal. Wherein, the upper enclosing rope 3 and the lower enclosing rope 4 can adopt rope bodies with low extension, so as to limit the fishing net body 1 from deforming.
As shown in fig. 1 to 3, in the using state of the trawl net 10 of the present invention, the first diamond-shaped meshes 221 and the second diamond-shaped meshes 231 can be folded and gathered together by the tension force of the diamond-shaped meshes, so that when the net body 1 is folded and pulled, the first diamond-shaped meshes 221 and the second diamond-shaped meshes 231 can be automatically folded and gathered together, so as to achieve the effects of reducing the volume of the folded net and improving the smoothness of the folded net.
In addition, the plurality of first diamond-shaped meshes 221 and the plurality of second diamond-shaped meshes 231 are arranged in opposite directions with the dividing rope 21 as a reference, and the dividing rope 21 is positioned between the upper enclosing rope 3 and the lower enclosing rope 4, so when the fishing net body 1 is retracted and pulled, the plurality of first diamond-shaped meshes 221 and the plurality of second diamond-shaped meshes 231 are drawn close to the middle of the woven net 2 (the dividing rope 21), the situation that the net deviates to one side due to uneven stress is avoided, and the net retracting smoothness of the purse net 10 is enhanced.
Moreover, each first separation rope 24 is an inclined line gradually approaching the middle net section 7 from the boundary rope 21 to the upper circumferential rope 3, and each second separation rope 25 is an inclined line gradually approaching the middle net section 7 from the boundary rope 21 to the lower circumferential rope 4, so as to guide the upper net areas 22 and the lower net areas 23 to be folded towards the middle net section 7 along the folding direction (from the left arched hand net 5 and the right arched hand net 6 to be folded to the middle net section 7), so that the net folding of the surrounding trawl 10 is smoother.
Furthermore, when the fishing net body 1 is pulled and retracted, the fish school 200 will gather toward the middle position of the woven net 2 first, and will not slip away from the mesh until the space in the middle of the woven net 2 is insufficient, so the size of the first diamond mesh 221 of the plurality of upper mesh areas 22 gradually decreases from the left arched hand net 5 and the right arched hand net 6 toward the middle net section 7, and the size of the second diamond mesh 231 of the plurality of lower mesh areas 23 gradually decreases from the left arched hand net 5 and the right arched hand net 6 toward the middle net section 7, so that the mesh of the woven net 2 presents a fishing net with large sides, small middle and relatively small meshes, and the enclosure trawl 10 of the invention has the advantages of low cost, light weight and small volume.
Referring to fig. 4, another embodiment of a trawl 10 according to the present invention is shown, wherein the embodiment of fig. 4 is substantially the same as the embodiment of fig. 1 to 3, and the embodiment of fig. 4 is different from the embodiment of fig. 1 to 3 in that the structure of the middle net segment 7 is different.
As shown in fig. 1 to 3, the middle section 7 is a plane net, but not limited to this, and as shown in fig. 4, the middle section 7 may also be a mesh bag.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A trawl, comprising:
the fishing net body comprises a woven net, an upper enclosing rope, a lower enclosing rope, a left arching hand net and a right arching hand net, wherein the upper enclosing rope, the lower enclosing rope, the left arching hand net and the right arching hand net are sequentially arranged on the upper side, the lower side, the left side and the right side of the woven net;
each upper mesh area is provided with a plurality of first rhombic meshes, each lower mesh area is provided with a plurality of second rhombic meshes, the first rhombic meshes and the second rhombic meshes are arranged in opposite directions by taking the dividing rope as a reference, the sizes of the first rhombic meshes of the upper mesh areas are gradually reduced from the left arched hand net and the right arched hand net to the middle mesh section, and the sizes of the second rhombic meshes of the lower mesh areas are gradually reduced from the left arched hand net and the right arched hand net to the middle mesh section.
2. The round trawl net of claim 1, wherein a first separation rope is provided between two adjacent upper mesh areas, the edge of the first diamond-shaped mesh on one side of the first separation rope is formed by the edge of two adjacent first diamond-shaped meshes on the other side.
3. The trawl of claim 2, wherein each of the first dividing ropes is an inclined line gradually approaching the middle section from the dividing rope to the upper enclosing rope.
4. The round trawl net of claim 1, wherein a second separation rope is provided between two adjacent lower mesh areas, and the side of the second diamond-shaped mesh on one side of the second separation rope is formed by the side of two adjacent second diamond-shaped meshes on the other side.
5. The trawl of claim 4, wherein each of the second dividing ropes is an inclined line gradually approaching the middle net section from the dividing rope to the lower enclosing rope.
6. The trawl of claim 1, wherein the first diamond meshes and the second diamond meshes are symmetrically arranged with respect to each other with the dividing rope as a reference.
7. The trawl of claim 1, wherein the upper rope is a rope that floats on the sea surface and the lower rope is a rope that sinks into the sea.
8. The trawl of claim 7, wherein the upper rope and the lower rope are low-ductility rope bodies, the upper rope is a plastic rope, and the lower rope is a nylon rope.
9. The trawl of claim 8, wherein the middle net section is a planar net or a pocket net.
10. The trawl according to claim 1, wherein the mesh size of the middle segment is smaller than the size of each of the first diamond-shaped meshes and the size of each of the second diamond-shaped meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105299.6A CN112790167B (en) | 2019-11-13 | 2019-11-13 | Round trawl net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105299.6A CN112790167B (en) | 2019-11-13 | 2019-11-13 | Round trawl net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112790167A true CN112790167A (en) | 2021-05-14 |
| CN112790167B CN112790167B (en) | 2022-06-10 |
Family
ID=75803194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911105299.6A Active CN112790167B (en) | 2019-11-13 | 2019-11-13 | Round trawl net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112790167B (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB125370A (en) * | 1919-03-24 | 1920-04-29 | Cornelis Pieter Dros | Improvements in Trawling and like Fishing Apparatus. |
| GB462538A (en) * | 1935-09-10 | 1937-03-10 | William Ernest Shuttleworth | Improvements in or relating to fishing gear |
| GB1219021A (en) * | 1967-04-07 | 1971-01-13 | Klas Yngve Torvald Bernhardsso | Improvements in trawl or similar fishing nets |
| US5444933A (en) * | 1991-11-12 | 1995-08-29 | Kinoshita; Hiromi | Trawl fishing gear and trawl fishing method |
| CN2671338Y (en) * | 2003-12-29 | 2005-01-19 | 中国水产科学研究院东海水产研究所 | Double boat surface and middle layer rope trawl |
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| US20060272196A1 (en) * | 1996-10-11 | 2006-12-07 | Sherif Safwat | Cell design for a trawl system and methods |
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| US20180027784A1 (en) * | 2015-02-11 | 2018-02-01 | Gx Technology Canada Ltd. | Rigging configuration for a commercial fishing trawl |
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| JP6869566B1 (en) * | 2019-11-14 | 2021-05-12 | 余添枝 | Fishing net |
-
2019
- 2019-11-13 CN CN201911105299.6A patent/CN112790167B/en active Active
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| GB462538A (en) * | 1935-09-10 | 1937-03-10 | William Ernest Shuttleworth | Improvements in or relating to fishing gear |
| GB1219021A (en) * | 1967-04-07 | 1971-01-13 | Klas Yngve Torvald Bernhardsso | Improvements in trawl or similar fishing nets |
| US5444933A (en) * | 1991-11-12 | 1995-08-29 | Kinoshita; Hiromi | Trawl fishing gear and trawl fishing method |
| US20060272196A1 (en) * | 1996-10-11 | 2006-12-07 | Sherif Safwat | Cell design for a trawl system and methods |
| CN2671338Y (en) * | 2003-12-29 | 2005-01-19 | 中国水产科学研究院东海水产研究所 | Double boat surface and middle layer rope trawl |
| CN2788557Y (en) * | 2005-01-20 | 2006-06-21 | 中国水产科学研究院东海水产研究所 | Sea fishing resources monitoring and survey trawl |
| US20060288634A1 (en) * | 2005-05-24 | 2006-12-28 | Wimbus Malcolm I | Trap for marine life |
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| Publication number | Publication date |
|---|---|
| CN112790167B (en) | 2022-06-10 |
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