CN104920312A - Upright grid type net plate - Google Patents
Upright grid type net plate Download PDFInfo
- Publication number
- CN104920312A CN104920312A CN201510261861.XA CN201510261861A CN104920312A CN 104920312 A CN104920312 A CN 104920312A CN 201510261861 A CN201510261861 A CN 201510261861A CN 104920312 A CN104920312 A CN 104920312A
- Authority
- CN
- China
- Prior art keywords
- plate
- flow guide
- guide plate
- grid type
- aspect ratio
- 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
- 239000003351 stiffener Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 230000002787 reinforcement Effects 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 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)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention relates to an upright grid type net plate which comprises an upper flow guide plate, a plurality of wing plates with large span-chord ratios, steel warp reinforcement plates and a lower flow guide plate. The upright grid type net plate is characterized in that the wing plates with the large span-chord ratios are arranged between the upper flow guide plate and the lower flow guide plate, the upper ends and the lower ends of the wing plates with the large span-chord ratios are connected with the upper flow guide plate and the lower flow guide plate along angles of wedges at the front end of the upper flow guide plate and the front end of the lower flow guide plate, are equidistantly rearwards arrayed and are parallel to one another, the steel warp reinforcement plates are arranged between the upper flow guide plate and the lower flow guide plate and are connected and combined with the various wing plates to form a net plate body which is of a structure with a small span-chord ratio, and the upright grid type net plate is integrally in a grid form. The upright grid type net plate has the advantages that merits of low induced drag and high lift-drag ratios of the wing plates with the large span-chord ratios can be sufficiently played, and the upright grid type net plate is applicable to fishing boats with different gross tons and operation on water of different water layers and is high in water power efficiency.
Description
Technical field
The invention belongs to sea fishery and fish for technical field of tools, particularly relate to a kind of upright grid type web plate.
Background technology
Web plate is the important accessory in single boat trawl, and its Main Function is the horizontal expansion realizing netting gear.For the trawlnet of different water levels, web plate also plays netting gear settler or realizes the effect of netting gear vertical opening.Current world trawl-net fishing uses more web plate type to have rectangle, ellipse, V-arrangement, vertical (high aspect ratio), vertical type curved face V-arrangement, slat formula etc.Operation principle and the wing of web plate are similar, and the operating efficiency of size on web plate of aspect ratio has remarkable impact.When adopting high aspect ratio, reduction is streamed at web plate two ends, the induced resistance of web plate reduces, improve lift-drag ratio, and then improve the efficiency of web plate, and such as, vertical type curved face shape, vertical type curved face V-arrangement, hyperboloid shape web plate, this type of web plate is used for large-scale middle and bottom layers trawlnet, and the towed speed of web plate is very fast.And for medium and small trawler, be subject to the restriction of boats and ships towing tension, deck working area, netting gear specification etc., general use low aspect ratio web plate, such as, rectangle, V-arrangement web plate etc., the hydrodynamic efficiency of this type of web plate is lower, a large amount of eddy current is produced behind when entrainment, thus increase board drag and the expansionary force decreasing web plate, meanwhile, the friction between this type of web plate and seabed is comparatively large, stirs a large amount of mud mist during towing at sea bottom surface, form way vestige, greatly destroy halobiontic habitat.
Trawlnet is the fish production mode, particularly single boat trawl of a high energy consumption, and web plate substantially increases again the resistance of whole gear system while playing its effect.Therefore, how to improve trawlnet trawling efficiency, reduce energy consumption and cost, being the difficult point of mesh-plate structure design and fit on, is also the developing direction of single boat trawl fishery.
Summary of the invention
The object of the invention is the upright grid type web plate designing a kind of low aspect ratio combined by multiple high aspect ratio wing plate, have and be applicable to different gross ton fishing boat, different water levels water body operation use, hydrodynamic efficiency is high, the advantage that web plate back eddy current is few.
Object of the present invention is achieved through the following technical solutions: it is by baffle upper plate, high aspect ratio wing plate, drag guiding principle stiffener, chin spoiler is formed, it is characterized in that baffle upper plate is identical with chin spoiler specification, front end is wedge shape, rear end is arc, multiple high aspect ratio wing plate is set between baffle upper plate and chin spoiler, and the upper and lower side of high aspect ratio wing plate is connected with chin spoiler along the angle of baffle upper plate with chin spoiler front end wedge shape with baffle upper plate, equidistantly to arrange backward, be arranged in parallel between each wing plate, overall in grid, arrange between baffle upper plate and chin spoiler and drag guiding principle stiffener, and be connected with each wing plate.
Compared with prior art, remarkable result of the present invention is:
1) a kind of upright grid type web plate adopts multiple high aspect ratio wing plate to combine, and can give full play to high aspect ratio wing plate induced resistance low, the advantage that lift-drag ratio is high, improve web plate hydrodynamic performance;
2) upright grid type web plate adopts a web plate main body of multiple high aspect ratio groups of vanes being synthesized a low aspect ratio, and maintenance low aspect ratio web plate mobility is good, operation advantage easily;
3) multiple high aspect ratio groups of vanes is synthesized a web plate for a low aspect ratio by upright grid type web plate, can according to the number of the condition of fishing boat, netting gear adjustment high aspect ratio wing plate and setting angle to adapt to different trawling requirements;
4) a kind of upright grid type web plate is under the equal expansionary force condition of acquisition, and overall dimension is miniaturized, so both can meet the demand to board spread force when table, middle level water body operation, and can meet again the user demand of medium and small trawler;
5) a kind of upright grid type web plate is in operation process, due to the guide functions that the gap between grid is played, compares the impact that conventional low aspect ratio web plate can reduce web plate back eddy current, can maintain higher hydrodynamic performance in wider range of angles of attack.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is inner side view of the present invention;
Fig. 3 is outer side view of the present invention.
Label declaration: 1: baffle upper plate, 2: high aspect ratio wing plate, 3: drag guiding principle stiffener, 4: chin spoiler.
Embodiment
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiments of the invention, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar change thereof, all should list protection scope of the present invention in.
By shown in Fig. 1 to Fig. 3, the upright grid type web plate of the one that the embodiment of the present invention provides, its by baffle upper plate 1, high aspect ratio wing plate 2, drag guiding principle stiffener 3, chin spoiler 4 is formed, equally spacedly between baffle upper plate 1 and chin spoiler 4 be provided with multiple high aspect ratio wing plate 2, drag guiding principle stiffener 3 to be connected in turn with each high aspect ratio wing plate 2, the web plate main body of a composition low aspect ratio structure.
Described baffle upper plate 1 is identical with chin spoiler 4 specification, and one end is wedge shape, and the other end is curved.
The specification of described each high aspect ratio wing plate 2 is identical, and plate face structure is rectangle.
Described drag guiding principle stiffener 3 is equipped with drag guiding principle support, and identical with the specification of baffle upper plate 1, chin spoiler 4.
As shown in Figure 1 to Figure 3, high aspect ratio wing plate induced resistance is low, and lift-drag ratio is high, contributes to the expansionary force improving web plate, after multiple high aspect ratio wing plate 2 being combined into the web plate main body of a low aspect ratio, can improve again mobility and the operation convenience of web plate.
As shown in Figure 1 to Figure 3, by adjusting the distance between each high aspect ratio wing plate 2, and baffle upper plate 1, chin spoiler 4 front wedge shape angle, the impact of Controling network backboard bilge vortex.
As shown in Figure 1 to Figure 3, the quantity of the high aspect ratio wing plate 2 in the present invention can need to arrange 3-10 according to practical structures or intensity, drags guiding principle stiffener 3 and can arrange 1-3.
Claims (5)
1. a upright grid type web plate, it is characterized in that: it is by baffle upper plate (1), high aspect ratio wing plate (2), drag guiding principle stiffener (3), chin spoiler (4) is formed, equidistantly be arranged in parallel multiple high aspect ratio wing plate (2) between baffle upper plate (1) and chin spoiler (4), and the upper and lower side of high aspect ratio wing plate (2) is connected with chin spoiler (4) along the angle of baffle upper plate (1) with chin spoiler (4) front end wedge shape with baffle upper plate (1), arrange between baffle upper plate (1) and chin spoiler (4) and drag the web plate main body that guiding principle stiffener (3) and each high aspect ratio wing plate (2) are connected to form a low aspect ratio structure in turn, overall in grid.
2. the upright grid type web plate of one according to claim 1, is characterized in that, described baffle upper plate (1) is identical with chin spoiler (4) specification, and front end is wedge shape, and rear end is curved.
3. the upright grid type web plate of one according to claim 1, is characterized in that, the specification of described each high aspect ratio wing plate (2) is identical, and plate face structure is rectangle.
4. the upright grid type web plate of one according to claim 1, is characterized in that, drags guiding principle stiffener (3) is equipped with and drags guiding principle support, and identical with the specification of baffle upper plate (1), chin spoiler (4).
5. the upright grid type web plate of one according to claim 1, is characterized in that, the quantity of described high aspect ratio wing plate (2) can need to arrange 3-10 according to practical structures or intensity, drags guiding principle stiffener and can arrange 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261861.XA CN104920312B (en) | 2015-05-21 | 2015-05-21 | A kind of upright grid type web plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261861.XA CN104920312B (en) | 2015-05-21 | 2015-05-21 | A kind of upright grid type web plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104920312A true CN104920312A (en) | 2015-09-23 |
| CN104920312B CN104920312B (en) | 2018-01-05 |
Family
ID=54108030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510261861.XA Expired - Fee Related CN104920312B (en) | 2015-05-21 | 2015-05-21 | A kind of upright grid type web plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104920312B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105875534A (en) * | 2016-05-24 | 2016-08-24 | 中国水产科学研究院东海水产研究所 | Frame plate-embedded type assembly mesh plate |
| CN110754447A (en) * | 2019-09-04 | 2020-02-07 | 浙江省海洋水产研究所 | Suspended screen plate for single-ship-bottom trawl |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU561544A1 (en) * | 1974-09-09 | 1977-06-15 | Калининградский технический институт рыбной промышленности и хозяйства | Trawl board |
| GB2161351A (en) * | 1984-07-10 | 1986-01-15 | Kevin Joseph Mcloughlin | Otter boards |
| US5283972A (en) * | 1990-12-06 | 1994-02-08 | Nichimo Co., Ltd. | Otter board |
| CN2817427Y (en) * | 2005-08-26 | 2006-09-20 | 中国水产科学研究院东海水产研究所 | Rectangular curved otter board with double seams |
| US20100115820A1 (en) * | 2007-04-24 | 2010-05-13 | Valentine Gavrilovich Perevoshchikov | Perforated slat trawl door |
| CN202890254U (en) * | 2012-10-11 | 2013-04-24 | 宁波捷胜海洋开发有限公司 | Bottom layer trawl board |
-
2015
- 2015-05-21 CN CN201510261861.XA patent/CN104920312B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU561544A1 (en) * | 1974-09-09 | 1977-06-15 | Калининградский технический институт рыбной промышленности и хозяйства | Trawl board |
| GB2161351A (en) * | 1984-07-10 | 1986-01-15 | Kevin Joseph Mcloughlin | Otter boards |
| US5283972A (en) * | 1990-12-06 | 1994-02-08 | Nichimo Co., Ltd. | Otter board |
| CN2817427Y (en) * | 2005-08-26 | 2006-09-20 | 中国水产科学研究院东海水产研究所 | Rectangular curved otter board with double seams |
| US20100115820A1 (en) * | 2007-04-24 | 2010-05-13 | Valentine Gavrilovich Perevoshchikov | Perforated slat trawl door |
| CN202890254U (en) * | 2012-10-11 | 2013-04-24 | 宁波捷胜海洋开发有限公司 | Bottom layer trawl board |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105875534A (en) * | 2016-05-24 | 2016-08-24 | 中国水产科学研究院东海水产研究所 | Frame plate-embedded type assembly mesh plate |
| CN105875534B (en) * | 2016-05-24 | 2019-05-31 | 中国水产科学研究院东海水产研究所 | A kind of frame panel formula assembly reticular lamina |
| CN110754447A (en) * | 2019-09-04 | 2020-02-07 | 浙江省海洋水产研究所 | Suspended screen plate for single-ship-bottom trawl |
| CN110754447B (en) * | 2019-09-04 | 2021-10-08 | 浙江省海洋水产研究所 | Suspended screen plate for single-ship-bottom trawl |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104920312B (en) | 2018-01-05 |
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Granted publication date: 20180105 Termination date: 20200521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |