CN203136828U - Double-cod end trawl with hydrofoils - Google Patents
Double-cod end trawl with hydrofoils Download PDFInfo
- Publication number
- CN203136828U CN203136828U CN 201320099856 CN201320099856U CN203136828U CN 203136828 U CN203136828 U CN 203136828U CN 201320099856 CN201320099856 CN 201320099856 CN 201320099856 U CN201320099856 U CN 201320099856U CN 203136828 U CN203136828 U CN 203136828U
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- CN
- China
- Prior art keywords
- hydrofoil
- outer net
- net
- double
- external net
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a double-cod end trawl with hydrofoils, which comprises an external net, the external net is almost shaped like a cone after being expanded, the opening of the external net is located on the round bottom of the cone, an internal net which has the same shape as the external net does is arranged in the external net, the meshes of the internal net are smaller than the meshes of the external net, the rigidity of the internal net is lower than the rigidity of the external net, the upper hydrofoil, the left hydrofoil, the lower hydrofoil and the right hydrofoil are connected with the opening of the external net, and are 90 degrees away from one another on the round opening of the external net, the sides of the upper hydrofoil and the lower hydrofoil, which are opposite from each other, are provided with curved projections, the sides of the left hydrofoil and the right hydrofoil, which are opposite from each other, are provided with curved projections, and the upper hydrofoil, the left hydrofoil, the lower hydrofoil and the right hydrofoil can be connected with a tug through ropes. The fabrication process of the double-cod end trawl is simple, and the double-cod end trawl is convenient to operate; the double-cod end trawl not only can increase the survival rate of catches, but also can effectively protect fish bodies from being injured; and the double-cod end trawl can be widely applied in aquaculture and scientific research activities.
Description
Technical field
The utility model belongs to fishing and uses the trawlnet technical field, particularly relates to a kind of two capsule trawlnets with hydrofoil.
Background technology
After entering 21 century, the sustainable development fishery has become the common themes of the times of paying close attention in the world.Exploitation marine fish culture new varieties are to solve the major issue that China's sea fishery sustainable and healthy development faces, and have become one of important behave of culturing industry economic pursuit new growth point.Catch fish from natural sea area, carrying out artificial domestication is the indispensable step of new varieties.Yet for the stronger fish of irritability, in the netting gear fishing operation process such as adopt traditional trawlnet, gill net, throw the net, it is high and the fish surface is impaired seriously to catch lethality.Therefore, need a kind of can the raising fish for survival rate, can effectively protect the device of fishing for that the fish body avoids damaging again.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of two capsule trawlnets with hydrofoil, catches the impaired problem such as serious of lethality height, fish surface in the prior art to solve.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of two capsule trawlnets with hydrofoil are provided, comprise outer net, described outer net struts the back substantially coning, described outer net opening is positioned at conical round bottom, an Intranet that shape is the same with outer net is arranged in the described outer net, the mesh of described Intranet is less than the mesh of outer net, the hardness of described Intranet is less than the hardness of outer net, described outer net opening part is connected with hydrofoil, left side hydrofoil, following hydrofoil and right hydrofoil, the described hydrofoil of going up, left side hydrofoil, the position of following hydrofoil and right hydrofoil on the circular open of outer net, stagger mutually 90 the degree, the described hydrofoil of going up has arc convex with the opposing face of following hydrofoil, described left hydrofoil and the opposing face of right hydrofoil have arc convex, the described hydrofoil of going up, left side hydrofoil, following hydrofoil is connected towboat with right hydrofoil with rope.
Described outer net all be to be made by macromolecular material with Intranet.
Beneficial effect
Advantage of the present utility model is that manufacture craft is simple, and is easy to operate; Can improve and fish for survival rate, can effectively protect the fish body to avoid damage again; Can be widely used in breeding production and scientific research activity.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only are used for explanation the utility model and are not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, a kind of two capsule trawlnets with hydrofoil, comprise outer net 2, described outer net 2 struts the back substantially coning, described outer net 2 openings are positioned at conical round bottom, the same Intranet 3 of a shape and outer net 2 is arranged in the described outer net 2, the mesh of described Intranet 3 is less than the mesh of outer net 2, the hardness of described Intranet 3 is less than the hardness of outer net 2, described outer net 2 opening parts are connected with hydrofoil 4, left side hydrofoil 5, following hydrofoil 6 and right hydrofoil 7, the described hydrofoil 4 of going up, left side hydrofoil 5, the position of following hydrofoil 6 and right hydrofoil 7 on the circular open of outer net 2, stagger mutually 90 the degree, the described hydrofoil 4 of going up has arc convex with following hydrofoil 6 opposing faces, described left hydrofoil 5 and right hydrofoil 7 opposing faces have arc convex, the described hydrofoil 4 of going up, left side hydrofoil 5, following hydrofoil 6 is connected towboat 1 with right hydrofoil 7 with rope.
Described outer net 2 all be to be made by macromolecular material with Intranet 3.
The utility model is to have on the basis of outer net 2 at the conventional small trawlnet, has installed Intranet 3 additional, and Intranet 3 material softnesses have avoided catching fish frictionally damage in device; The while Double-level Reticulated is the available buffer impact force of water flow also, has reduced the stress reaction of catching fish, fishes for survival rate thereby improved.
Claims (2)
1. two capsule trawlnets with hydrofoil, comprise outer net (2), it is characterized in that, described outer net (2) struts the back substantially coning, described outer net (2) opening is positioned at conical round bottom, the shape Intranet (3) the same with outer net (2) arranged in the described outer net (2), the mesh of described Intranet (3) is less than the mesh of outer net (2), the hardness of described Intranet (3) is less than the hardness of outer net (2), described outer net (2) opening part is connected with hydrofoil (4), left side hydrofoil (5), following hydrofoil (6) and right hydrofoil (7), the described hydrofoil (4) of going up, left side hydrofoil (5), the position of following hydrofoil (6) and right hydrofoil (7) on the circular open of outer net (2), stagger mutually 90 the degree, described upward hydrofoil (4) and the opposing face of following hydrofoil (6) have arc convex, described left hydrofoil (5) and the opposing face of right hydrofoil (6) have arc convex, the described hydrofoil (4) of going up, left side hydrofoil (5), following hydrofoil (6) is connected towboat (1) with right hydrofoil (7) with rope.
2. a kind of two capsule trawlnets with hydrofoil according to claim 1 is characterized in that, described outer net (2) with Intranet (3) all be to be made by macromolecular material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320099856 CN203136828U (en) | 2013-03-05 | 2013-03-05 | Double-cod end trawl with hydrofoils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320099856 CN203136828U (en) | 2013-03-05 | 2013-03-05 | Double-cod end trawl with hydrofoils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203136828U true CN203136828U (en) | 2013-08-21 |
Family
ID=48964404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320099856 Expired - Fee Related CN203136828U (en) | 2013-03-05 | 2013-03-05 | Double-cod end trawl with hydrofoils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203136828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432233A (en) * | 2019-09-02 | 2019-11-12 | 浙江海洋大学 | A kind of elasticity aperture film Cod-ends of Trawl |
-
2013
- 2013-03-05 CN CN 201320099856 patent/CN203136828U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432233A (en) * | 2019-09-02 | 2019-11-12 | 浙江海洋大学 | A kind of elasticity aperture film Cod-ends of Trawl |
| CN110432233B (en) * | 2019-09-02 | 2021-06-08 | 浙江海洋大学 | Elastic small-hole film trawl net bag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140305 |