CN2657393Y - Net sack of fishing trawl - Google Patents
Net sack of fishing trawl Download PDFInfo
- Publication number
- CN2657393Y CN2657393Y CN 03274154 CN03274154U CN2657393Y CN 2657393 Y CN2657393 Y CN 2657393Y CN 03274154 CN03274154 CN 03274154 CN 03274154 U CN03274154 U CN 03274154U CN 2657393 Y CN2657393 Y CN 2657393Y
- Authority
- CN
- China
- Prior art keywords
- net
- net capsule
- bursa
- capsule
- stage casing
- 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
Links
Abstract
The utility model discloses a dragnet net-bursa for halieutics; a binding link is arranged in the bellow of the end of the bursa; the front end is connected with the end terminal of the net body of the dragnet; the net-bursa can be divided into the front part of the net-bursa, the middle part of the net-bursa and the rear part of the net-bursa in order; the front part and the rear part of the net-bursa are all with a diamond-shaped net structure; the middle part of the net-bursa is a square shaped net structure. The utility model adopts the structure combined with the diamond-shaped and the square-shaped structures, and enables the net structure to keep the maximum open angle all time; the structure can release young fish of different body shapes, enhance the releasing ratio and the selectivity of halieutics, and realize the purpose of catching the big and releasing the young. The device is good for protection and utilization of fish culture resource rationally.
Description
Technical field
The utility model relates to a kind of fishing gear, relates in particular to a kind of fishing trawlnet net capsule.
Background technology
Trawlnet is one of topmost fishing gear in the marine fishing fishery, and fishery output is maximum and most effective, but also the most serious to fishery resources and seabed environmental destruction.The net capsule is one of trawlnet most important component, selects performance that decisive influence is arranged to fishing for.For a long time, trawlnet net capsule is to be made by diamond mesh net sheet entirely, and netting twine is thick; size of mesh is little, and longitudinally stressed back mesh is tending towards closing up, and the fishery harvesting selectivity is relatively poor; so that the juvenile fish ratio can be in any more, has had a strong impact on fishery resources sustainable utilization and marine organisms Protection of Diversity.Along with people to the improving constantly of resource and environmental protection consciousness, responsible notion of fishing for has been proposed in the world, the strong development selectivity Fishing Gear and Fishing Method of appealing.Therefore, reform net capsule structure, the selection performance that improves its fishing just seem urgently necessary again.It will more help protection and rationally utilize fishery resources, promote the marine fishing sustainable development of fishery.
The utility model content
The purpose of this utility model is to provide a kind of can improve the fishery harvesting quality, can protect and rationally utilize the fishing trawlnet net capsule of fishery resources again.
The purpose of this utility model is achieved by the following technical programs:
A kind of fishing trawlnet net capsule that the utility model provides, its terminal assembling drawline, front end is connected with the end of trawlnet body; Described net capsule is divided into net capsule leading portion, net capsule stage casing and net capsule back segment from front to back, and described net capsule leading portion and net capsule back segment are the diamond mesh structure, and net capsule stage casing is the square mesh structure.In the fishing trawlnet net capsule of the present utility model, the square mesh structure is adopted in its stage casing, makes in the trawling process, and longitudinally stressed back mesh always keeps maximum to open, and improves the fishing selectivity.Simultaneously, combine, be suitable for the many fingerlings in ocean and mix the characteristics of dwelling, adopt square mesh can discharge the round body type juvenile fish, adopt diamond mesh can discharge flat build juvenile fish with the diamond mesh structure of net capsule leading portion and back segment.
Net capsule described in the utility model, the length ratio of its leading portion, stage casing and back segment can be made as 1: 6: 1.The large percentage that the net capsule stage casing of the mesh that is square structure occupies not only improves the selectivity of fishing, and makes most of mesh of net capsule always keep maximum to open, thereby reduces trawl resistance, reduces fishing with consuming.
The size of mesh of net capsule leading portion described in the utility model, net capsule stage casing and net capsule back segment is 40mm.By net capsule selectivity comparative trial, and long according to the legal hualage standard and 50% selective body of main marine fishing object, determine that size of mesh of the present utility model is 40mm, can improve the release rate of juvenile fish.
Between net capsule leading portion described in the utility model and the net capsule stage casing, respectively assemble one between net capsule stage casing and the net capsule back segment and laterally strengthen guiding principle, described whole net capsule longitudinally is equipped with four vertical manropes symmetrically at least.Not only increase net capsule intensity, also improve the situation of opening of mesh, make more juvenile fish escape from open mesh, reach the purpose of protection juvenile fish resource.
The utlity model has following beneficial effect:
(1) the net capsule structure that adopts most of square mesh and fraction diamond mesh to combine always keeps the maximum open while in most of mesh, can discharge the juvenile fish of different builds, improves release rate and the fishing selectivity of juvenile fish, realize catching stay greatly little.
(2) because most of mesh always keeps maximum to open, therefore can reduce the resistance of trawlnet, reduce fishing with consuming.
(3) Zhuan Pei manrope not only can increase net capsule intensity, can also improve mesh and open situation, further improves the release rate of juvenile fish, thereby reaches the purpose of protection juvenile fish resource.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is done further and is described in detail:
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Figure 1 shows that a kind of embodiment that fishes trawlnet net capsule of the present utility model, the net capsule is a cylindrical shape, and the length ratio that is divided into 3, three sections of net capsule leading portion 1, net capsule stage casing 2 and net capsule back segments from front to back is 1: 6: 1.Net capsule leading portion 1 is identical with net capsule back segment 3 structures, is diamond mesh, and net capsule stage casing 2 is a square mesh, and size of mesh is 40mm.The front end of net capsule leading portion 1 is connected with the end of trawlnet body.Between net capsule leading portion 1 and the net capsule stage casing 2, respectively have one laterally to strengthen guiding principle 5 between net capsule stage casing 2 and the net capsule back segment 3, is pricked respectively to tie and is coupled together, form whole net capsule; Whole net capsule has longitudinally assembled four vertical manropes 4 symmetrically; Drawline 6 of the end of net capsule back segment assembling, tension drawline 6 is drawing close-network capsule end in during operation, and operation finishes and then unclamps drawline 6 and put catches to unload.
Claims (4)
1, a kind of fishing trawlnet net capsule, its end is equipped with drawline, front end is connected with the end of trawlnet body, it is characterized in that: described net capsule is divided into net capsule leading portion, net capsule stage casing and net capsule back segment from front to back, described net capsule leading portion and net capsule back segment are the diamond mesh structure, and net capsule stage casing is the square mesh structure.
2, fishing trawlnet net capsule according to claim 1, it is characterized in that: the length ratio of described net capsule leading portion, net capsule stage casing and net capsule back segment is 1: 6: 1.
3, fishing trawlnet net capsule according to claim 1, it is characterized in that: the size of mesh of described net capsule leading portion, net capsule stage casing and net capsule back segment is 40mm.
4, according to each described fishing trawlnet net capsule of claim 1-3, it is characterized in that: between described net capsule leading portion and the net capsule stage casing, respectively assemble one between net capsule stage casing and the net capsule back segment and laterally strengthen guiding principle, described whole net capsule longitudinally assembles four vertical manropes symmetrically at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03274154 CN2657393Y (en) | 2003-09-04 | 2003-09-04 | Net sack of fishing trawl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03274154 CN2657393Y (en) | 2003-09-04 | 2003-09-04 | Net sack of fishing trawl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657393Y true CN2657393Y (en) | 2004-11-24 |
Family
ID=34331185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03274154 Expired - Fee Related CN2657393Y (en) | 2003-09-04 | 2003-09-04 | Net sack of fishing trawl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657393Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106719481A (en) * | 2016-12-06 | 2017-05-31 | 浙江省海洋水产研究所 | A kind of Eco-friendly Trawl gear Choice tests device |
| CN107047492A (en) * | 2017-04-13 | 2017-08-18 | 浙江省海洋水产研究所 | A kind of selective fishing device |
| CN107410230A (en) * | 2017-05-18 | 2017-12-01 | 中国水产科学研究院东海水产研究所 | A kind of small mesh middle layer trawl |
| CN111642469A (en) * | 2020-06-04 | 2020-09-11 | 中国水产科学研究院东海水产研究所 | Bag-shaped net and method for acquiring escape rate of caught object from trawl mesh by using same |
-
2003
- 2003-09-04 CN CN 03274154 patent/CN2657393Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106719481A (en) * | 2016-12-06 | 2017-05-31 | 浙江省海洋水产研究所 | A kind of Eco-friendly Trawl gear Choice tests device |
| CN107047492A (en) * | 2017-04-13 | 2017-08-18 | 浙江省海洋水产研究所 | A kind of selective fishing device |
| CN107410230A (en) * | 2017-05-18 | 2017-12-01 | 中国水产科学研究院东海水产研究所 | A kind of small mesh middle layer trawl |
| CN111642469A (en) * | 2020-06-04 | 2020-09-11 | 中国水产科学研究院东海水产研究所 | Bag-shaped net and method for acquiring escape rate of caught object from trawl mesh by using same |
| CN111642469B (en) * | 2020-06-04 | 2022-08-19 | 中国水产科学研究院东海水产研究所 | Bag-shaped net and method for acquiring escape rate of caught object from trawl mesh by using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Yang Lin Designer after: Zhang Xufeng Designer after: Tan Yongguang Designer before: Zhang Lin Designer before: Zhang Xufeng Designer before: Tan Yongguang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: ZHANG LIN ZHANG XUFENG TAN YONGGUANG TO: YANG LIN ZHANG XUFENG TAN YONGGUANG |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |