CN106719481A - A kind of Eco-friendly Trawl gear Choice tests device - Google Patents
A kind of Eco-friendly Trawl gear Choice tests device Download PDFInfo
- Publication number
- CN106719481A CN106719481A CN201611111430.6A CN201611111430A CN106719481A CN 106719481 A CN106719481 A CN 106719481A CN 201611111430 A CN201611111430 A CN 201611111430A CN 106719481 A CN106719481 A CN 106719481A
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- China
- Prior art keywords
- net
- outer layer
- rack
- survey grid
- eco
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 239000002775 capsule Substances 0.000 claims description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003306 harvesting Methods 0.000 description 10
- 241000251468 Actinopterygii Species 0.000 description 9
- 238000011161 development Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 241001484259 Lacuna Species 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The invention discloses a kind of Eco-friendly Trawl gear Choice tests device, including survey grid is treated, it is described to treat that survey grid is provided only with an opening；Also include outer layer net, outer layer net is enclosed within the outside for treating survey grid, treats that survey grid overlaps with the opening of outer layer net；The mesh gap of outer layer net is less than the mesh gap for treating survey grid.The beneficial effects of the invention are as follows：The selection function of fishing net that can comprehensively quickly to being installed on it is tested.
Description
Technical field
The present invention relates to technical field of fishery, more particularly, to a kind of Eco-friendly Trawl gear Choice tests device.
Background technology
Development of resources, the development of fishery are built upon on the basis of natural resources, natural environment.Either any fishing
Industry, can all affect to resource and environment, when this influence is beyond resource or environment ability to bear, can
The problem of sustainable development will be highlighted.In recent years, country gradually strengthened for the attention degree of fishery resources, 2013 with
The Ministry of Agriculture puts into effect in succession within 2014《The Ministry of Agriculture is on prohibitting the use of 13 kinds of notices of fishing gear such as double ship many capsule trawlnets of monolithic》
With《Notice of the Ministry of Agriculture on the implementation mutatis mutandis fishing gear of marine fishing and transition fishing gear minimum size of mesh system》.Country is for fishing
Industry resource attention degree is gradually stepped up, and the development for Eco-friendly fishing gear is also gradually paid attention to, and how Reasonable Protection fishery is provided
Source, how rational fishing turns into research aspect the most popular at present.Chinese patent literature CN105660551A, in 2016 6
Disclose within 15th " a kind of middle layer trawl keed selectivity device " moon, connected using rigid annulus, taper separate mesh, manrope and taper
Net is connect, it is characterized in that taper separate mesh is square mesh, the big end of taper separate mesh is fixed on a rigid annulus, and taper separates
The rigid annulus at the big end of net are connected with body net, taper separate mesh small end one rigid annulus of connection, taper separate mesh small end it is firm
Property circle diameter be the 1/2 of the big end rigid annulus diameter of taper separate mesh, the rigid annulus of taper separate mesh small end connect with taper
The connection of net small end is connect, taper connection net big end connection keed, the mesh of taper connection net is identical with the mesh of keed, body net and net
Uniform 4 manropes connection between capsule, manrope length=taper separate mesh longitudinal direction sheepshank length+taper connection net longitudinal direction sheepshank is long
Degree.The device sets different meshes by the different piece in same net, and will enter the fishery harvesting point size in networking is carried out
Selection, the big fish of adult is stayed in net, and teenage small fish leaves from large mesh, is formed and the Eco-friendly of fishery resources is caught
Drag for.In of this sort technical scheme, the selection of fishing net is extremely important, and the mesh of body fishing net determines that great fish can be by
Finally fish for, the mesh of separate mesh determines that how small fish can fled from before fishing for, that is to say, that the two nets
The size of mesh determines the fulfilling degree that Eco-friendly is fished for.Also Just because of this, to the Choice tests of fishing net mesh
Become topmost aspect in environmental fishing gear research.Routine test needs the fishing net reality of the different meshes of use again and again
Fish for, only will appreciate that the fishery harvesting be caught and drag for, it is difficult to grasp that how many small fish actually is fled from from net, whole process of the test it is very long and
Uninteresting, the conclusion for drawing also is inaccurate.
The content of the invention
The technical problem to be solved in the invention is to lack one kind both to can be appreciated that the information of fishing for, and the information of fleeing from is can be appreciated that again
Tentative fishing net, so as to provide a kind of Eco-friendly Trawl gear Choice tests device, can comprehensively quickly to peace
The selection function of dress fishing net thereon is tested.
To achieve these goals, the present invention is adopted the following technical scheme that：A kind of Eco-friendly Trawl gear selectivity
Experimental rig, including survey grid is treated, it is described to treat that survey grid is provided only with an opening；Also include outer layer net, outer layer net is enclosed within treats survey grid
Outside, treats that survey grid overlaps with the opening of outer layer net；The mesh gap of outer layer net is less than the mesh gap for treating survey grid.
The technical program covers last layer outer layer net outside survey grid is treated, outer layer net overlaps with the aperture position for treating survey grid, makes
Fishery harvesting is only capable of entering by opening treats survey grid.There are three final positions into the fishery harvesting for treating survey grid：Size is more than the net for treating survey grid
The part of interporal lacuna is left on treats in survey grid, portion of the size between the mesh gap for treating survey grid and the mesh gap of outer layer net
Divide the space for being left on and treating in the outer outer layer net of survey grid, size can be from outer layer net point less than the part in the mesh gap of outer layer net
From.After analysis stays in kind after the fishery harvesting inside and outside survey grid, size and development degree, the mesh gap for treating survey grid is just will appreciate that
Whether size meets the requirement of Eco-friendly off-grid, further experiment and analyze, can also to different cultivars, Various Seasonal,
Different waters propose targetedly mesh clearance requirement.
Preferably, described also include rack to be measured and outer layer rack；Rack to be measured and outer layer rack are cylindrical cage,
Outer layer rack is enclosed within rack outside to be measured, is connected with the cross bar of radial direction in end between the two；The rack to be measured and outer layer net
The outer framework of frame is axial vertical pole, and vertical pole is provided with the etting fixture of fixed net, and etting fixture is crossed by the Netcom to be measured
It is fixed on rack to be measured, the outer layer net is fixed on outer layer rack and cross bar by etting fixture.Such design, shape
Into a cage for bilayer, net to be measured is covered on the rack to be measured of internal layer, the outer layer rack overlying lid outer layer net of outer layer is able to
To further treat that survey grid and outer layer net open, fish for true effect with realize treating survey grid to greatest extent, there is provided more accurately
Test data.Rack to be measured and outer layer net are set up the cylindrical cage for being calculated as connecting together, and the cross bar connection for passing through end,
Can ensure net strut effect on the premise of, reduce material usage.Rack to be measured and outer layer rack can using stainless steel,
Titanium alloy etc., it is ensured that long period of soaking in the seawater can also durable.
Preferably, the etting fixture is streamlined on the direction parallel to vertical pole.Used rack to be measured and
The experimental rig of outer layer rack, can in the seawater move along the axial direction of rack to be measured by front of opening direction when in use,
Therefore etting fixture needs to be designed as streamlined in the direction of movement, to reduce the resistance of motion.
Preferably, the opening for treating survey grid is connected with the small tubaeform network interface of outer imperial palace.Tubaeform network interface can be helped
Help more fishery harvesting to enter to treat in survey grid.Can cover consistent even more small with outer layer net mesh gap on tubaeform network interface
Net.
Preferably, being provided with removable ball float at the opening of the end of the outer layer rack and/or tubaeform network interface.It is floating
Ball can help whole experimental rig to be suspended in the predetermined depth of water on demand, more targeted to specific fishery harvesting.
Preferably, the ball float is pressure-resistant floating ball.Because deeper pressure is bigger below sea, it is therefore desirable to floated with pressure-resistant
Ball resists deep water hydraulic pressure, and compatibility test device obtains more fully test data.
Preferably, the openend of the rack to be measured is provided with net capsule attachment means, treat that the opening of survey grid passes through net
Capsule attachment means are detachably mounted to the openend of rack to be measured.For the ease for the treatment of the dismounting of survey grid, this programme uses net capsule
Attachment means treat the opening of survey grid to fix.
In sum, the beneficial effects of the invention are as follows：The selection function of fishing net that can comprehensively quickly to being installed on it
Tested.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Wherein：1 rack to be measured, 2 outer layer racks, 3 cross bars, 4 vertical poles, 5 etting fixtures, 6 tubaeform network interfaces, 7 ball floats, 8
Net capsule attachment means.
Specific embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, being a kind of Eco-friendly Trawl gear Choice tests device.The present apparatus includes rack to be measured 1
With 2 two columnar titanium alloy cages of outer layer rack, some vertical poles 4 are radially provided with both side walls, on each vertical pole all
It is fixed with etting fixture 5.Etting fixture has streamlined on the length direction of vertical pole.Outer layer rack is enclosed within rack to be measured
Outward, both ends are securely attached to together with the cross bar 3 of radial direction.The removable fixation of etting fixture is crossed by Netcom to be measured
On the outside of rack to be measured, the cylindrical shape net capsule only in right-hand end opening is formed；Outer layer net is fixed outside by etting fixture
The outside of layer net, forms and the cylindrical shape net capsule for treating that survey grid opening overlaps.According to test requirements document, the mesh gap of outer layer net is less than
Treat the mesh gap of survey grid.Treat that survey grid is also associated with tubaeform network interface 6, the right side opening of tubaeform network interface in the position of right-end openings
Mouth is big, and left side connection treats that the opening of survey grid is small.Tubaeform network interface covering is used and outer layer net mesh gap identical net.Outward
Two ends of layer rack, the right-hand end of tubaeform network interface are respectively connected with several ball floats 7, can be adjusted according to depth is fished for
The quantity of ball float.What ball float was selected is pressure-resistant floating ball.The right openings end of rack to be measured is additionally provided with net capsule attachment means 8, treats
The opening of survey grid is detachably mounted to the right openings end of rack to be measured by net capsule attachment means, conveniently treats survey grid
Fast assembling-disassembling.
A kind of Eco-friendly Trawl gear Choice tests device of this example, using inside and outside two-layer cage, is covered each by
Secure and treat survey grid and outer layer net, expanded by tubaeform network interface and fish for entrance, be have selected by ball float and fish for depth.Entirely
Experimental rig is moved fishing in marine site from left to right under the drive of ship, and the fishery harvesting in marine site is led by tubaeform network interface
Enter to treating that survey grid net is intracapsular.Into treating that the fishery harvesting of survey grid net capsule, according to different sizes, there is three final positions：Size is more than to be treated
The part in the mesh gap of survey grid is left on treats in survey grid, and size is between the mesh gap for treating survey grid and the mesh gap of outer layer net
Between part be left on the space treated in the outer outer layer net of survey grid, size can be from outer less than the part in the mesh gap of outer layer net
Layer net is separated.After analysis stays in kind after the fishery harvesting inside and outside survey grid, size and development degree, the net for treating survey grid is just will appreciate that
Whether interporal lacuna size meets the requirement of Eco-friendly off-grid, further experiment and analysis, can also be to different cultivars, difference
Season, different waters propose targetedly mesh clearance requirement, for fishery work provides more accurately professional guidance opinion.
Claims (7)
1. a kind of Eco-friendly Trawl gear Choice tests device, including survey grid is treated, it is characterized in that, it is described to treat that survey grid only sets
There is an opening；Also include outer layer net, outer layer net is enclosed within the outside for treating survey grid, treats that survey grid overlaps with the opening of outer layer net；Outer layer
The mesh gap of net is less than the mesh gap for treating survey grid.
2. a kind of Eco-friendly Trawl gear Choice tests device according to claim 1, it is characterized in that, it is described also
Including rack to be measured（1）With outer layer rack（2）；Rack to be measured and outer layer rack are cylindrical cage, and outer layer rack is enclosed within to be measured
Rack outside, between the two in end with the cross bar of radial direction（3）Connection；The outer framework of the rack to be measured and outer layer rack is axle
To vertical pole（4）, vertical pole is provided with the etting fixture of fixed net（5）, the Netcom to be measured crosses etting fixture and is fixed on and treats
On survey grid frame, the outer layer net is fixed on outer layer rack and cross bar by etting fixture.
3. a kind of Eco-friendly Trawl gear Choice tests device according to claim 2, it is characterized in that, the net
Clothing fixture is streamlined on the direction parallel to vertical pole.
4. a kind of Eco-friendly Trawl gear Choice tests device according to Claims 2 or 3, it is characterized in that, institute
State and treat that the opening of survey grid is connected with the small tubaeform network interface of outer imperial palace（6）.
5. a kind of Eco-friendly Trawl gear Choice tests device according to claim 4, it is characterized in that, it is described outer
Removable ball float is provided with the layer end of rack and/or the opening of tubaeform network interface（7）.
6. a kind of Eco-friendly Trawl gear Choice tests device according to claim 5, it is characterized in that, it is described floating
Ball is pressure-resistant floating ball.
7. a kind of Eco-friendly Trawl gear Choice tests device according to Claims 2 or 3, it is characterized in that, institute
The openend for stating rack to be measured is provided with net capsule attachment means（8）, treat that the opening of survey grid is detachable by net capsule attachment means
The openend for being fixed on rack to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111430.6A CN106719481A (en) | 2016-12-06 | 2016-12-06 | A kind of Eco-friendly Trawl gear Choice tests device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111430.6A CN106719481A (en) | 2016-12-06 | 2016-12-06 | A kind of Eco-friendly Trawl gear Choice tests device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106719481A true CN106719481A (en) | 2017-05-31 |
Family
ID=58874469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611111430.6A Pending CN106719481A (en) | 2016-12-06 | 2016-12-06 | A kind of Eco-friendly Trawl gear Choice tests device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106719481A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108719165A (en) * | 2018-04-28 | 2018-11-02 | 浙江省海洋水产研究所 | The apparatus and method of gear selectivity experiment sampling |
| CN108739686A (en) * | 2018-06-14 | 2018-11-06 | 中国水产科学研究院黄海水产研究所 | A kind of device and method of cage gear selectivity fishing experiment |
| CN109717157A (en) * | 2019-03-10 | 2019-05-07 | 杭州林迪德瑞科技有限公司 | Trawling gear and method |
| CN109730041A (en) * | 2019-03-10 | 2019-05-10 | 杭州林迪德瑞科技有限公司 | Intelligent trawling gear and method |
| CN110432233A (en) * | 2019-09-02 | 2019-11-12 | 浙江海洋大学 | A kind of elasticity aperture film Cod-ends of Trawl |
| CN113261543A (en) * | 2021-05-17 | 2021-08-17 | 浙江省海洋水产研究所 | Rotary type selective trawl equipment for marine protection animals |
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| SU1147310A1 (en) * | 1982-09-03 | 1985-03-30 | Полярный научно-исследовательский институт морского рыбного хозяйства и океанографии им.Н.М.Книповича | Apparatus for determining selectivity of trawl |
| SU1653683A1 (en) * | 1989-02-03 | 1991-06-07 | В.Н.Мельников, А.В Мельников, С.Ф.Ефанов и И.Г.Истомин | Device for separating hydrobionts for types and sizes in catching |
| CN2657393Y (en) * | 2003-09-04 | 2004-11-24 | 中国水产科学研究院南海水产研究所 | Net sack of fishing trawl |
| CN202535939U (en) * | 2012-04-01 | 2012-11-21 | 上海海洋大学 | Special casting net for catching small-size fish |
| CN103704182A (en) * | 2013-12-16 | 2014-04-09 | 浙江海洋学院 | Novel offshore fishing device |
| CN204616809U (en) * | 2015-03-20 | 2015-09-09 | 中国水产科学研究院南海水产研究所 | A kind of fry harvesting purse seine device |
| CN204762908U (en) * | 2015-05-22 | 2015-11-18 | 中国水产科学研究院珠江水产研究所 | Different particle diameter level plankton gather separation netting gear |
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2016
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| SU1653683A1 (en) * | 1989-02-03 | 1991-06-07 | В.Н.Мельников, А.В Мельников, С.Ф.Ефанов и И.Г.Истомин | Device for separating hydrobionts for types and sizes in catching |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108719165A (en) * | 2018-04-28 | 2018-11-02 | 浙江省海洋水产研究所 | The apparatus and method of gear selectivity experiment sampling |
| CN108719165B (en) * | 2018-04-28 | 2020-04-03 | 浙江省海洋水产研究所 | Fishing gear selective experiment sampling device and method |
| CN108739686A (en) * | 2018-06-14 | 2018-11-06 | 中国水产科学研究院黄海水产研究所 | A kind of device and method of cage gear selectivity fishing experiment |
| CN109717157A (en) * | 2019-03-10 | 2019-05-07 | 杭州林迪德瑞科技有限公司 | Trawling gear and method |
| CN109730041A (en) * | 2019-03-10 | 2019-05-10 | 杭州林迪德瑞科技有限公司 | Intelligent trawling gear and method |
| CN109730041B (en) * | 2019-03-10 | 2021-06-15 | 杭州林迪德瑞科技有限公司 | Intelligent trawl apparatus and method |
| 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 |
| CN113261543A (en) * | 2021-05-17 | 2021-08-17 | 浙江省海洋水产研究所 | Rotary type selective trawl equipment for marine protection animals |
| CN113261543B (en) * | 2021-05-17 | 2022-06-24 | 浙江省海洋水产研究所 | Rotary type selective trawl equipment for marine protection animals |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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