CN2817427Y - Rectangular curved otter board with double seams - Google Patents
Rectangular curved otter board with double seams Download PDFInfo
- Publication number
- CN2817427Y CN2817427Y CNU2005200445660U CN200520044566U CN2817427Y CN 2817427 Y CN2817427 Y CN 2817427Y CN U2005200445660 U CNU2005200445660 U CN U2005200445660U CN 200520044566 U CN200520044566 U CN 200520044566U CN 2817427 Y CN2817427 Y CN 2817427Y
- Authority
- CN
- China
- Prior art keywords
- board
- plate
- web plate
- chord length
- rectangular curved
- 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
- 241001233242 Lontra Species 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 239000003351 stiffener Substances 0.000 description 2
- 241000238557 Decapoda Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000758 substrate Substances 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
- A01K73/04—Devices for spreading or positioning, e.g. control thereof
- A01K73/045—Devices for spreading or positioning, e.g. control thereof for lateral sheering, e.g. trawl boards
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The utility model relates to a rectangular curved net board with double seams, particularly a single-boat trawl board, which needs to provide a net plate with high efficiency and good stability. The utility model has the technical scheme that the rectangular curved net board with double seams is composed of an upper face board, a lower face board, flow guiding vanes, a drag rope board, a reinforcing board, a lower box body, a pull iron, a cross rope board and a triangular frame. The utility model is characterized in that the cross sections of the face boards of the rectangular curved net board with double seams form a wing shape, the upper and the lower face boards are connected in an obtuse angle, and the included angle of the board faces is 154DEG; the face boards of the rectangular curved net board with double seams are provided with two longitudinal seams, the width of the front seam is 150 mm, and the distance between the centerline of the front seam and the front edge of the rectangular curved net board with double seams is the chord length of 17 percent, the curvature of one flow guiding vane is 9 percent, and the included angle of the direction of the chord length of the flow guiding vane and the drag rope board is 30DEG; the width of the back seam is 140 mm, the distance between the centerline of the back seam and the front edge of the rectangular curved net board with double seams is the chord length of 50 percent, the curvature of the other flow guiding vane is 9 percent, and included angle of the direction of the chord length of the flow guiding vane and the drag rope board is 35DEG; the aspect ratio of the rectangular curved net board with double seams is 1. The utility model is used for single-boat trawl fishing.
Description
Technical field:
The utility model relates to the web plate of expansion trawlnet tool in the single boat trawl operation.
Background technology
Trawl board is installed on the trawlnet front end, and the horizontal expansion that utilizes the hydrodynamic force that produces in the entrainment to keep netting gear reaches the purpose of fishing for.Therefore, the quality of web plate performance directly influences the fishery harvesting efficient of trawlnet.Web plate commonly used in China's single boat trawl fishery has rectangle plane web plate, V-arrangement web plate, ellipse web plate, comprehensive web plate etc.Wherein the rectangle plane web plate still is widely used in China's shrimp trawl-net fishing so far owing to simple in structure, cheap.But rectangle plane web plate lift-drag ratio is 1.14, and hydrodynamic performance is relatively poor.The V-arrangement web plate is mainly used in the medium and small single boat trawl fishery of China owing to simple in structure, cheap, good stability, its lift-drag ratio 1.23, and similar to the rectangle plane web plate, hydrodynamic performance is relatively poor.The adaptability that the ellipse web plate has a fishing ground is strong, suit in the advantage of rugged submarine, mainly uses on 294～441 kilowatts of trawler, and its shortcoming is that complex structure, maintenance trouble, operating period are short.Comprehensive web plate has higher hydrodynamic performance and suits in advantages such as rugged submarines, mainly uses on 441～735 kilowatts of trawler at present, and its shortcoming is that stability is not enough when submarine.
The utility model content
The utility model technical issues that need to address are that a kind of board efficiency (lift-drag ratio) is high, the web plate of good stability for 222～735 kilowatts of single trawlers provide.
The technical solution of the utility model by top panel, lower panel, guide vane, warp plate, reinforcing plate, lower box, drag iron, fork guiding principle plate, tripod to form, it is characterized in that web plate panel transverse shape is the airfoil cambered surface, upper and lower panel links to each other in obtuse angle, and plate face angle is 154 °; The web plate panel has two longitudinal joint mouths, and preceding seam width is 150mm, and the sealing center line is 17% wing chord length apart from the distance of web plate leading edge, and guide vane curvature is 9%, and guide vane chord length direction and warp plate angle are 30 °; Back seam width is 140mm, and the sealing center line is 50% wing chord length apart from the distance of web plate leading edge, and guide vane curvature is 9%, and guide vane chord length direction and warp plate angle are 35 °; The aspect ratio of web plate is 1.
The utility model the experiment proved that when the angle of attack was 35 °, the lift coefficient of web plate was 1.36, and resistance coefficient is 0.67, and the web plate lift-drag ratio can reach 2.03, and combination property is better than the existing otter-trawl web plate of China.
Description of drawings
What accompanying drawing was represented is rectangle double slit mouth curved surface web plate schematic diagram.
Embodiment
Implement best way of the present utility model below in conjunction with description of drawings:
The utility model adopts top panel 1, outer balsh unit 2, stiffener 3, lower box 4, drags iron 5, back guide vane 6, pre-turning vane sheet 7, warp plate 8, lower panel 9, fork guiding principle plate 10, tripod 11 to form the rectangle double slit mouth curved surface web plate of full steel structures; The basic quadrangularly of the peripheral profile of web plate, outer rim weldable steel unit 2 at web plate strengthens, the lower box 4 that the lower edge assembling of web plate is welded by steel plate, iron 5 is dragged in the bottom welding of casing, four circular stiffeners 3 of panel front welding at web plate, and by steel unit and warp plate 8 welding, warp plate 8 assembling tripod base and tripods 11, web plate plate face bends to the airfoil cambered surface, on, lower panel 1,9 link to each other in obtuse angle, and plate face angle is 154 °, and portion is provided with the wide sealing of 150mm in face of the plate, sealing trailing edge assembling curvature is 9% guide vane, established angle is 30 °, and plate face middle part is provided with the wide sealing of 140mm, and sealing trailing edge assembling curvature is 9% guide vane, established angle is 35 °, and the aspect ratio of web plate is 1.This web plate spreading performance is good, and resistance coefficient is low, can effectively cut down the consumption of energy, and good stability, be suitable for using in various substrates marine site.
Claims (1)
- Rectangle double slit mouth curved surface web plate by top panel, lower panel, guide vane, warp plate, reinforcing plate, lower box, drag iron, fork guiding principle plate, tripod to form, it is characterized in that web plate panel transverse shape is the airfoil cambered surface, upper and lower panel links to each other in obtuse angle, and plate face angle is 154 °; The web plate panel has two longitudinal joint mouths, and preceding seam width is 150mm, and the sealing center line is 17% wing chord length apart from the distance of web plate leading edge, and guide vane curvature is 9%, and guide vane chord length direction and warp plate angle are 30 °; Back seam width is 140mm, and the sealing center line is 50% wing chord length apart from the distance of web plate leading edge, and guide vane curvature is 9%, and guide vane chord length and warp plate angle are 35 °, and the aspect ratio of web plate is 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200445660U CN2817427Y (en) | 2005-08-26 | 2005-08-26 | Rectangular curved otter board with double seams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200445660U CN2817427Y (en) | 2005-08-26 | 2005-08-26 | Rectangular curved otter board with double seams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2817427Y true CN2817427Y (en) | 2006-09-20 |
Family
ID=37003480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200445660U Expired - Fee Related CN2817427Y (en) | 2005-08-26 | 2005-08-26 | Rectangular curved otter board with double seams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2817427Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990864B (en) * | 2009-08-24 | 2012-05-30 | 中国水产科学研究院东海水产研究所 | Self-submergence frame type sampling method of marine juvenile fish by sampling net |
| CN102897291A (en) * | 2012-10-16 | 2013-01-30 | 浙江海洋学院 | Large-field-angle trawling gear |
| CN103813710A (en) * | 2011-07-22 | 2014-05-21 | 阿特利·马尔·约瑟法特森 | A trawl door or paravane with remote control adjustment |
| CN104920312A (en) * | 2015-05-21 | 2015-09-23 | 山东大学（威海） | Upright grid type net plate |
-
2005
- 2005-08-26 CN CNU2005200445660U patent/CN2817427Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990864B (en) * | 2009-08-24 | 2012-05-30 | 中国水产科学研究院东海水产研究所 | Self-submergence frame type sampling method of marine juvenile fish by sampling net |
| CN103813710A (en) * | 2011-07-22 | 2014-05-21 | 阿特利·马尔·约瑟法特森 | A trawl door or paravane with remote control adjustment |
| CN103813710B (en) * | 2011-07-22 | 2017-03-29 | 阿特利·马尔·约瑟法特森 | The trawlnet door adjusted using remotely control or hydrofoil |
| CN102897291A (en) * | 2012-10-16 | 2013-01-30 | 浙江海洋学院 | Large-field-angle trawling gear |
| CN102897291B (en) * | 2012-10-16 | 2015-11-25 | 浙江海洋学院 | Large angle trawling gear |
| CN104920312A (en) * | 2015-05-21 | 2015-09-23 | 山东大学（威海） | Upright grid type net plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060920 Termination date: 20120826 |