CN103283691A - Small-span-chord-ratio rectangular double cambered-surface middle-layer net plate and floating- gravitational force adjusting method thereof - Google Patents
Small-span-chord-ratio rectangular double cambered-surface middle-layer net plate and floating- gravitational force adjusting method thereof Download PDFInfo
- Publication number
- CN103283691A CN103283691A CN2013102339345A CN201310233934A CN103283691A CN 103283691 A CN103283691 A CN 103283691A CN 2013102339345 A CN2013102339345 A CN 2013102339345A CN 201310233934 A CN201310233934 A CN 201310233934A CN 103283691 A CN103283691 A CN 103283691A
- Authority
- CN
- China
- Prior art keywords
- plate
- main panel
- aspect ratio
- cambered surface
- low aspect
- 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.)
- Granted
Links
Images
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The invention relates to a small-span-chord-ratio rectangular double cambered-surface net plate and a floating-gravitational force adjusting method of the net plate. The net plate comprises a main panel, the two sides of the panel are of hollow structures, the inner side and the outer side of the main panel are arc-shaped curved surfaces, the curvature of the arc-shaped curved surface on the inner side is larger than that of the arc-shaped curved surface on the outer side, an upper deflector is installed at the top of the main panel, a lower deflector is installed at the bottom of the main panel, a warp reinforcing plate is installed in the middle, and a warp support is installed on the warp reinforcing plate and connected with the main panel through reinforcing ribs on the two sides. Cross rope connecting holes are formed in the upper deflector and the lower deflector, a floating force plate is installed below the upper deflector in a detachable connection mode, a balancing weight plate is installed above the lower deflector in a detachable connection mode, a bottom-pull baffle is installed below the lower deflector in a detachable connection mode, the front end of the bottom-pull baffle is arc-shaped, and a reinforcing rib plate is arranged in an upturned arc shape at the front end of the bottom-pull baffle. The main panel provides floating force, achieves floating-gravitational force adjusting in a detachable mode and is suitable for trawling in different water layers.
Description
Technical field
The invention belongs to sea fishery and fish for technical field of tools, particularly relate to the two cambered surface table middle level web plates of a kind of low aspect ratio rectangle and the power control method that drifts along thereof.
Background technology
Trawlnet is a kind of filterability fishing gear of movement.Web plate is the main accessory in the single boat trawl, and main effect is the horizontal expansion that realizes netting gear in the towing process of fishing boat.When carrying out middle level water body and bottom trawlnet, web plate also plays the effect of netting gear settler, is used for the realization netting gear and vertically expands.Web plate type commonly used has rectangle, ellipse, vertical type curved face type, vertical type curved face " V " shape, rectangle double slit curved face type, multiple aerofoil profile web plate etc. in the trawl-net fishing at present.High performance web plate should have following characteristic: have bigger expansionary force and less resistance; Good stability; Use in the marine site that adapts to different substrates; Use, adjust simply, processing, easy to maintenance.In the operation, the different target shoals of fish is not to be in same water layer, needs correct the adjusting and control net position, and the intensive center of network interface being aimed at the shoal of fish is to fish for one of key of success technology.The common method of regulating and control the net position when having operation now is that guiding principle length and trawlnet speed are draged in adjusting, and by to draging the upper and lower movement of guiding principle anchoring point or web plate fork guiding principle anchoring point, makes web plate generation vertical stress component up or down, adjusts water layer of living in.But the adjustable range of this control method of restriction that is subjected to this body structure of web plate is limited, also can cause the web plate stability decreases.
Also there is method to drag the iron device in vertical type curved face type or the installation of vertical type curved face " V " shape web plate lower end in addition, regulate web plate weight, in order to adapt to the profundal zone trawling, shortcoming is that the installation site is more random, influence the original hydrodynamic performance of web plate, only be useful in large-scale trawler, and when the bottom trawling, run into barrier and can wide-angle change and drag to, overturning easily.
Proposition along with global fishery resources decline, energy shortage and FAO " responsible fisheries code of conduct ", energy consumption is lower from now on, medium and small trawler will no longer be limited to a certain fixedly marine site operation more flexibly, but according to fishing season information rapid adjustment fishing ground, and realize that according to fish finder reflection fixedly controlled directed fishing, the tracking of water layer are fished for, reduce double catching.When various different water layer operation, as bottom trawlnet, middle layer trawl, surface trawl, web plate there is different requirements, need the web plate of the different force rate examples of drifting along, but a fishing boat can not be equipped with multiple web plate, will limit the job area of fishing boat like this.Therefore the development of single boat trawl web plate, exploitation should possess according to different work water layer and operation sea situation, can realize that through simple assembling same web plate is used for multi-purpose purpose, develops towards high efficiency, low energy consumption, good stability, low-cost direction simultaneously.
Summary of the invention
Technical problem to be solved by this invention provides the two cambered surface table middle level web plates of a kind of low aspect ratio rectangle and the power control method that drifts along thereof, spreading performance is good, resistance coefficient is low, the inner two ends of main panel hollow structure can provide a part of buoyancy, have the quick adjusting power of drifting along, adapt to different water layer operations and have the advantage of good spreading performance.
The technical solution adopted for the present invention to solve the technical problems is: the two cambered surface table middle levels of a kind of low aspect ratio rectangle web plate is provided, comprise main panel, described main panel both sides are hollow structure, described main panel inboard and the outside are arc-shaped curved surface, the curvature of the inboard arc-shaped curved surface of described main panel is greater than the curvature of outer arcuate curved surface, deflector is installed at the main panel top, chin spoiler is installed in the bottom, the middle installation draged the guiding principle stiffener, described drag to be equipped with on the guiding principle stiffener drag the guiding principle support, the described reinforcement of guiding principle support by both sides that drag is connected with main panel, described baffle upper plate and chin spoiler are provided with fork guiding principle connecting hole, the buoyancy plate is installed in the mode of removably connecting in described baffle upper plate below, Weight plate is installed in the mode of removably connecting in described chin spoiler top, described chin spoiler below is installed the end in the mode of removably connecting and is dragged baffle plate, it is circular arc that the baffle plate front end is dragged at the described end, in the circular arc that the described end drags the baffle plate front end to upwarp deep floor is arranged.
Drag baffle plate to drag barrier support to be connected with chin spoiler the end of by and adopt stainless steel bolt to connect at the described end.
The described end, drag the angular edge place of baffle plate, baffle upper plate and chin spoiler all to handle through fillet.
Described main panel is made with the ship plate of thickness 1cm.
The curvature of the inboard arc-shaped curved surface of described main panel is about 15%, the curvature of outer arcuate curved surface is about 8%.
Described main panel edges at two ends is fillet, radius of corner 3.5cm.
The steel plate thickness of described baffle upper plate and chin spoiler is 1cm, and the wing tip development length is 10cm.
The angular edge of described baffle upper plate, chin spoiler is fillet.
Filling foamed plastics, aluminium alloy float or pressure-resistant plastic float in the hollow structure at described main panel two ends.
It is circular arc arc radius 20cm that the baffle plate front end is dragged at the described end.
The described end, drag baffle plate to be made by the 2cm steel plate.
The power of the drifting along control method of the two cambered surface web plates of a kind of low aspect ratio rectangle, its step is as follows:
A, on the top layer, when the trawling of waters, middle level need increase buoyancy, the buoyancy plate is installed below baffle upper plate;
B, when the trawling of middle subjacent waters need increase heavy power, Weight plate is installed above chin spoiler;
C, when carrying out the bottom trawling, the end, be installed below chin spoiler drag baffle plate.
Beneficial effect
The two cambered surface table middle level web plates of a kind of low aspect ratio rectangle provided by the invention and the power control method that drifts along thereof, except the inner two ends of main panel hollow structure can provide a part of buoyancy, by freely assembling buoyancy plate and Weight plate, realize the quick adjustment of the power of drifting along, be applicable to the trawling of different water layers.It is good to have spreading performance, and resistance coefficient is low, and position of centre of gravity is low, the advantage of good stability.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the embodiment of the invention;
Fig. 2 drags the baffle plate schematic diagram for the end of the embodiment of the invention;
Fig. 3 is the front view of the embodiment of the invention;
Fig. 4 is the rearview of the embodiment of the invention;
Fig. 5 is the vertical view of the embodiment of the invention.
Fig. 6 is that the A-A of Fig. 3 is to profile.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Shown in Fig. 1 to 6, the two cambered surface table middle levels of a kind of low aspect ratio rectangle web plate, comprise main panel 3, described main panel 3 both sides are hollow structure, described main panel 3 inboards and the outside are arc-shaped curved surface, the curvature of described main panel 3 inboard arc-shaped curved surfaces is greater than the curvature of outer arcuate curved surface, deflector 5 is installed at main panel 3 tops, chin spoiler 10 is installed in the bottom, the middle installation draged guiding principle stiffener 4, described drag to be equipped with on the guiding principle stiffener 4 drag guiding principle support 8, described guiding principle support 8 reinforcement by both sides that drags is connected with main panel 3, described baffle upper plate 5 and chin spoiler 10 are provided with fork guiding principle connecting hole 6, buoyancy plate 7 is installed in the mode of removably connecting in described baffle upper plate 5 belows, Weight plate 9 is installed in the mode of removably connecting in described chin spoiler 10 tops, described chin spoiler 10 belows are installed the end in the mode of removably connecting and are dragged baffle plate 1, it is circular arc that baffle plate 1 front end is dragged at the described end, in the circular arc that the described end drags baffle plate 1 front end to upwarp deep floor 11 is arranged.
Drag baffle plate 1 to drag barrier support 2 to be connected with chin spoiler 10 end of by and adopt stainless steel bolt to connect at the described end.
The described end, drag the angular edge place of baffle plate 1, baffle upper plate 5 and chin spoiler 10 all to handle through fillet.
Described main panel 3 is made with the ship plate of thickness 1cm.
The curvature of described main panel 3 inboard arc-shaped curved surfaces is about 15%, the curvature of outer arcuate curved surface is about 8%.
Described main panel 3 edges at two ends are fillet, radius of corner 3.5cm.
The steel plate thickness of described baffle upper plate 5 and chin spoiler 10 is 1cm, and the wing tip development length is 10cm.
The angular edge of described baffle upper plate 5, chin spoiler 10 is fillet.
Filling foamed plastics, aluminium alloy float or pressure-resistant plastic float in the hollow structure at described main panel 3 two ends.
It is circular arc arc radius 20cm that baffle plate 1 front end is dragged at the described end.
The described end, drag baffle plate 1 to be made by the 2cm steel plate.
The power of the drifting along control method of the two cambered surface web plates of a kind of low aspect ratio rectangle, its step is as follows:
A, on the top layer, when the trawling of waters, middle level need increase buoyancy, buoyancy plate 7 is installed below baffle upper plate 5;
B, when the trawling of middle subjacent waters need increase heavy power, Weight plate 9 is installed above chin spoiler 10;
C, when carrying out the bottom trawling, the end, be installed below chin spoiler 10 drag baffle plate 1.
Claims (12)
1. the two cambered surface table middle levels of low aspect ratio rectangle web plate, comprise main panel (3), it is characterized in that, described main panel (3) both sides are hollow structure, described main panel (3) inboard and the outside are arc-shaped curved surface, the curvature of the inboard arc-shaped curved surface of described main panel (3) is greater than the curvature of outer arcuate curved surface, deflector (5) is installed at main panel (3) top, chin spoiler (10) is installed in the bottom, the middle installation draged guiding principle stiffener (4), described drag to be equipped with on the guiding principle stiffener (4) drag guiding principle support (8), the described reinforcement of guiding principle support (8) by both sides that drag is connected with main panel (3), described baffle upper plate (5) and chin spoiler (10) are provided with fork guiding principle connecting hole (6), buoyancy plate (7) is installed in the mode of removably connecting in described baffle upper plate (5) below, Weight plate (9) is installed in the mode of removably connecting in described chin spoiler (10) top, described chin spoiler (10) below is installed the end in the mode of removably connecting and is dragged baffle plate (1), it is circular arc that baffle plate (1) front end is dragged at the described end, in the circular arc that the described end drags baffle plate (1) front end to upwarp deep floor (11) is arranged.
2. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that, drag baffle plate (1) to drag barrier support (2) to be connected with chin spoiler (10) end of by and adopts stainless steel bolt to connect at the described end.
3. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that the described end drags the angular edge place of baffle plate (1), baffle upper plate (5) and chin spoiler (10) all to handle through fillet.
4. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that described main panel (3) is made with the ship plate of thickness 1cm.
5. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that, the curvature of the inboard arc-shaped curved surface of described main panel (3) is about 15%, the curvature of outer arcuate curved surface is about 8%.
6. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that described main panel (3) edges at two ends is fillet, radius of corner 3.5cm.
7. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that the steel plate thickness of described baffle upper plate (5) and chin spoiler (10) is 1cm, and the wing tip development length is 10cm.
8. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that the angular edge of described baffle upper plate (5), chin spoiler (10) is fillet.
9. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that filling foamed plastics, aluminium alloy float or pressure-resistant plastic float in the hollow structure at described main panel (3) two ends.
10. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that it is circular arc arc radius 20cm that baffle plate (1) front end is dragged at the described end.
11. the two cambered surface table middle levels of a kind of low aspect ratio rectangle according to claim 1 web plate is characterized in that the described end drags baffle plate (1) to be made by the 2cm steel plate.
12. according to the power of the drifting along control method of the two cambered surface web plates of described any one low aspect ratio rectangle of claim 1 to 11, its step is as follows:
A, on the top layer, when the trawling of waters, middle level need increase buoyancy, buoyancy plate (7) is installed in baffle upper plate (5) below;
B, when the trawling of middle subjacent waters need increase heavy power, in chin spoiler (10) top Weight plate (9) is installed;
C, when carrying out the bottom trawling, the end, be installed in chin spoiler (10) below drag baffle plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310233934.5A CN103283691B (en) | 2013-06-13 | 2013-06-13 | Small-span-chord-ratio rectangular double cambered-surface middle-layer net plate and floating- gravitational force adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310233934.5A CN103283691B (en) | 2013-06-13 | 2013-06-13 | Small-span-chord-ratio rectangular double cambered-surface middle-layer net plate and floating- gravitational force adjusting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103283691A true CN103283691A (en) | 2013-09-11 |
| CN103283691B CN103283691B (en) | 2014-12-10 |
Family
ID=49085676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310233934.5A Active CN103283691B (en) | 2013-06-13 | 2013-06-13 | Small-span-chord-ratio rectangular double cambered-surface middle-layer net plate and floating- gravitational force adjusting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103283691B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106386717A (en) * | 2016-11-23 | 2017-02-15 | 中国水产科学研究院东海水产研究所 | Rectangular curved otter board |
| CN111436404A (en) * | 2020-04-15 | 2020-07-24 | 浙江海洋大学 | Double-cambered surface trawl net plate |
| CN111811049A (en) * | 2019-04-10 | 2020-10-23 | 三星电子株式会社 | Air conditioner |
| CN111990346A (en) * | 2020-08-19 | 2020-11-27 | 中国水产科学研究院东海水产研究所 | Euphausia superba trawl net plate water changing layer adjusting mechanism and method thereof |
| CN112512313A (en) * | 2018-07-11 | 2021-03-16 | A·M·乔萨法森 | Dispensing device |
| WO2021214082A1 (en) * | 2020-04-22 | 2021-10-28 | Josafatsson Atli Mar | Spreading device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU743657A1 (en) * | 1978-01-16 | 1980-06-30 | Специальное Экспериментально- Конструкторское Бюро Промышленного Рыболовства | Apparatus for horizontal opening of trawl mouth |
| SU749372A1 (en) * | 1978-03-03 | 1980-07-23 | Специальное Экспериментально-Конструкторское Бюро Промышленного Рыболовства | Apparatus for horizontal opening of trawl mouth |
| SU1117028A1 (en) * | 1980-07-21 | 1984-10-07 | Находкинская База Активного Морского Рыболовства Приморского Производственного Объединения Рыбной Промышленности "Приморрыбпром" | Strut trawl board |
| SU1741699A1 (en) * | 1990-03-20 | 1992-06-23 | Научно-Производственное Объединение "Югрыбтехцентр" Южного Бассейнового Научно-Производственного Рыбохозяйственного Объединения | Trawl opening device |
| JPH04183343A (en) * | 1990-11-15 | 1992-06-30 | Nichimo Co Ltd | Otter board |
| US5283972A (en) * | 1990-12-06 | 1994-02-08 | Nichimo Co., Ltd. | Otter board |
| CN2798586Y (en) * | 2005-07-06 | 2006-07-26 | 中国水产科学研究院东海水产研究所 | Screen plate for expanding dragnet sleeve and mouth |
| CN2817425Y (en) * | 2005-07-19 | 2006-09-20 | 中国水产科学研究院东海水产研究所 | Rectangular curved netting plate |
| EP1778006A2 (en) * | 2004-07-26 | 2007-05-02 | Candis EHF. | High speed, increased hydrodynamic efficiency, light-weight molded trawl door and methods for use and manufacture |
| CN101686657A (en) * | 2007-04-24 | 2010-03-31 | 汉皮德简公司 | Perforated slat trawl door |
| KR20100097803A (en) * | 2009-02-27 | 2010-09-06 | 백경공업주식회사 | Otter board |
| WO2011029958A1 (en) * | 2009-09-14 | 2011-03-17 | Hampidjan Hf | High efficiency, high stability, multi-elevation trawl door and methods |
-
2013
- 2013-06-13 CN CN201310233934.5A patent/CN103283691B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU743657A1 (en) * | 1978-01-16 | 1980-06-30 | Специальное Экспериментально- Конструкторское Бюро Промышленного Рыболовства | Apparatus for horizontal opening of trawl mouth |
| SU749372A1 (en) * | 1978-03-03 | 1980-07-23 | Специальное Экспериментально-Конструкторское Бюро Промышленного Рыболовства | Apparatus for horizontal opening of trawl mouth |
| SU1117028A1 (en) * | 1980-07-21 | 1984-10-07 | Находкинская База Активного Морского Рыболовства Приморского Производственного Объединения Рыбной Промышленности "Приморрыбпром" | Strut trawl board |
| SU1741699A1 (en) * | 1990-03-20 | 1992-06-23 | Научно-Производственное Объединение "Югрыбтехцентр" Южного Бассейнового Научно-Производственного Рыбохозяйственного Объединения | Trawl opening device |
| JPH04183343A (en) * | 1990-11-15 | 1992-06-30 | Nichimo Co Ltd | Otter board |
| US5283972A (en) * | 1990-12-06 | 1994-02-08 | Nichimo Co., Ltd. | Otter board |
| EP1778006A2 (en) * | 2004-07-26 | 2007-05-02 | Candis EHF. | High speed, increased hydrodynamic efficiency, light-weight molded trawl door and methods for use and manufacture |
| CN2798586Y (en) * | 2005-07-06 | 2006-07-26 | 中国水产科学研究院东海水产研究所 | Screen plate for expanding dragnet sleeve and mouth |
| CN2817425Y (en) * | 2005-07-19 | 2006-09-20 | 中国水产科学研究院东海水产研究所 | Rectangular curved netting plate |
| CN101686657A (en) * | 2007-04-24 | 2010-03-31 | 汉皮德简公司 | Perforated slat trawl door |
| KR20100097803A (en) * | 2009-02-27 | 2010-09-06 | 백경공업주식회사 | Otter board |
| WO2011029958A1 (en) * | 2009-09-14 | 2011-03-17 | Hampidjan Hf | High efficiency, high stability, multi-elevation trawl door and methods |
| WO2011029958A4 (en) * | 2009-09-14 | 2011-05-26 | Hampidjan Hf | High efficiency, high stability, multi-elevation trawl door and methods |
Non-Patent Citations (3)
| Title |
|---|
| 王明彦等: "立式V型曲面网板的水动力性能", 《水产学报》, no. 03, 30 June 2004 (2004-06-30) * |
| 郭根喜等: "《拖网网板动力学理论研究与实践》", 31 July 2008, article ""第一章 网板研究发展概况"、"小展弦比机翼理论与小展弦比网板"、"第十一章 国外的多用途网板"", pages: 1-15,20-25 - 254-261 * |
| 陈兴崇: "网板Ⅱ", 《水产与教育》, no. 02, 30 December 1976 (1976-12-30) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106386717A (en) * | 2016-11-23 | 2017-02-15 | 中国水产科学研究院东海水产研究所 | Rectangular curved otter board |
| CN112512313A (en) * | 2018-07-11 | 2021-03-16 | A·M·乔萨法森 | Dispensing device |
| CN111811049A (en) * | 2019-04-10 | 2020-10-23 | 三星电子株式会社 | Air conditioner |
| CN111811049B (en) * | 2019-04-10 | 2023-12-05 | 三星电子株式会社 | air conditioner |
| US11971179B2 (en) | 2019-04-10 | 2024-04-30 | Samsung Electronics Co., Ltd. | Air conditioner |
| CN111436404A (en) * | 2020-04-15 | 2020-07-24 | 浙江海洋大学 | Double-cambered surface trawl net plate |
| CN111436404B (en) * | 2020-04-15 | 2022-03-18 | 浙江海洋大学 | Double-cambered surface trawl net plate |
| WO2021214082A1 (en) * | 2020-04-22 | 2021-10-28 | Josafatsson Atli Mar | Spreading device |
| CN111990346A (en) * | 2020-08-19 | 2020-11-27 | 中国水产科学研究院东海水产研究所 | Euphausia superba trawl net plate water changing layer adjusting mechanism and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103283691B (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103283691B (en) | Small-span-chord-ratio rectangular double cambered-surface middle-layer net plate and floating- gravitational force adjusting method thereof | |
| CN106035143B (en) | Integrate the semi-submersible type deep-sea culture net cage of wave energy and solar power generation | |
| CN103271005B (en) | Small aspect ratio rectangular double-curved-surface surface and middle layer net plate | |
| CN207519426U (en) | A kind of cultivation work ship | |
| CN204350897U (en) | A kind of trawlnet flexibility expands net arrangement | |
| CN103340186B (en) | The two cambered surface trawl board of a kind of high aspect ratio and drift along and compare control method | |
| CN204151746U (en) | A kind of floating clipping wall unit and clipping wall group being applicable to marine float | |
| RU2727058C2 (en) | Trawl board with aerodynamic profile | |
| CN104234021B (en) | A kind of water surface cleaning ship and push away bleaching device | |
| CN104304200B (en) | A kind of flexible net expansing device | |
| CN103250686A (en) | High-aspect-ratio double-arc surface-middle layer trawl board | |
| CN103419906A (en) | A-shaped deep sea floating island | |
| CN206251766U (en) | A kind of rectangular curved netting plate | |
| Balash et al. | Twist-and-camber effects on the performance of simple hydro-sails for efficiently spreading penaeid trawls | |
| CN105599859B (en) | A kind of wave advance catamaran that the hydrofoil angle of attack is adjusted by hiding float | |
| CN207904857U (en) | A kind of floating breakwater | |
| CN207597342U (en) | The unrestrained device of self-stability exposed throughout type gear | |
| CN203558192U (en) | Raking ship | |
| Balash et al. | Hydrodynamic evaluation of a generic sail used in an innovative prawn-trawl otter board | |
| CN204097990U (en) | A kind of water surface cleaning ship and push away bleaching device | |
| CN103782927A (en) | Novel artificial fish reel | |
| JP2000102333A (en) | Trawl fishing net with submerged plate | |
| CN206914579U (en) | Otter-trawl plate peculiar to vessel | |
| CN208908872U (en) | One kind can snorkeling truss-like net cage | |
| JP2749812B2 (en) | Troll net |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |