CN104855345A - Vertical V-shaped grid screen plate - Google Patents
Vertical V-shaped grid screen plate Download PDFInfo
- Publication number
- CN104855345A CN104855345A CN201510261831.9A CN201510261831A CN104855345A CN 104855345 A CN104855345 A CN 104855345A CN 201510261831 A CN201510261831 A CN 201510261831A CN 104855345 A CN104855345 A CN 104855345A
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- plate
- aspect ratio
- vertical
- guide plate
- angle
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- 239000003351 stiffener Substances 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241001233242 Lontra Species 0.000 description 1
- 238000000034 method 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The invention relates to a vertical V-shaped grid screen plate. The vertical V-shaped grid screen plate is composed of an upper guide plate, V-shaped wing plates which are large in aspect ratio and have receding angles, steel warp reinforcing plates and a lower guide plate. The V-shaped wing plates which are large in aspect ratio and have the receding angles are arranged between the upper guide plate and the lower guide plate, the upper ends and the lower ends of the wing plates are connected with the upper guide plate and the lower guide plate at angles of wedges of the front ends of the upper guide plate and the lower guide plate, the wing plates are arranged backwards in parallel at equal intervals, the steel warp reinforcing plates are arranged between the upper guide plate and the lower guide plate and connected with the wing plates to form a screen plate body of a small-aspect-ratio structure, and the whole screen plate body is in a grid mode. The vertical V-shaped grid screen plate has high obstacle crossing capacity and lodging resistance and has the advantages of being high in expansionary force and suitable for fishing boats of different gross tons and water work on different water layers.
Description
Technical field
The invention belongs to sea fishery and fish for technical field of tools, particularly relate to a kind of vertical V-arrangement grid web plate.
Background technology
Trawl board is the important accessory in single boat trawl fishing operation, and its Main Function is the horizontal expansion realizing netting gear, and increase is swept sea and amassed.At present, in world's trawl-net fishing, use more web plate type to have rectangle, ellipse, V-arrangement, vertical (high aspect ratio), vertical type curved face V-arrangement, slat formula etc.Wherein the advantage of V-arrangement web plate is that cost is low, easy to operate, stability better, has stronger obstacle-overpass ability and lodging resistance.But because its plate face form is substantially similar to rectangular otter board, during operation, back can form larger vortex, so the expansionary force of V-arrangement web plate is poor, hydrodynamic efficiency is not high.Improve although China fishery worker has carried out some, such as, nearly ellipse is made in plate face, or offer slot etc. in the middle of web plate, improve its hydrodynamic efficiency with this, total water dynamic efficiency is still in reduced levels.
According to the operation principle of web plate, high aspect ratio structure contributes to reducing streaming of web plate two ends, reduces the induced resistance of web plate, improves the lift-drag ratio of web plate, and then improves the efficiency of web plate.And bottom trawlnet generally uses low aspect ratio web plate due to the restriction in seabed, hydrodynamic performance is poor.Therefore, how to improve the hydrodynamic performance of low aspect ratio web plate, become the difficult point in mesh-plate structure optimal design.
Summary of the invention
The object of the invention is to design a kind of by multiple high aspect ratio and the vertical V-arrangement grid web plate of low aspect ratio that combines of the V-wing plate with receding angle, have and be applicable to different gross ton fishing boat, different water levels water body operation use, stability is more excellent, lodging resistance is better, 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 and there is the V-wing plate of receding angle, 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 is set between baffle upper plate and chin spoiler and there is the V-wing plate of receding angle, the upper and lower side of each 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, with equidistantly setting arranged in parallel backward, and guiding principle stiffener is draged in setting between baffle upper plate and chin spoiler, and the web plate main body of the formation low aspect ratio structure that is connected with each wing plate, overall in grid.
Compared with prior art, remarkable result of the present invention is:
1) vertical V-arrangement grid web plate adopts multiple high aspect ratio and has a combination for the V-wing plate of receding angle, can give full play to high aspect ratio wing plate induced resistance low, the advantage that expansionary force is high, improve the hydrodynamic efficiency of common web plate;
2) vertical V-arrangement grid web plate adopt by multiple high aspect ratio and a low aspect ratio structure being combined into of the V-wing plate with receding angle as a web plate main body, can keep that low aspect ratio web plate mobility is good, operation advantage easily;
3) high aspect ratio that adopts of vertical V-arrangement grid web plate and have the V-wing plate of receding angle, compares ordinary rectangular web plate, has certain receding angle and the upper counterangle.The advantage increasing receding angle is the moment reducing to be formed centrally in incoming flow and wing plate, more be conducive to the horizontal stability improving web plate, the advantage increasing the upper counterangle is to improve the ability that seabed obstacle crossed by web plate, increases the lodging resistance (vertical stability) of web plate entirety;
4) vertical V-arrangement grid web plate is by multiple high aspect ratio and the V-wing plate with receding angle is combined into the web plate main body of a low aspect ratio, can according to the angle at the number of the condition adjustment high aspect ratio wing plate of fishing boat, netting gear and setting angle, each wing plate receding angle and the upper counterangle to adapt to different job requirements;
5) a kind of vertical V-arrangement grid web plate can make web plate under the equal expansionary force condition of acquisition, and overall dimension is miniaturized, so both can be suitable for medium and small fishing boat and use, and can meet again the demand to board spread force when table, middle level water body operation;
6) a kind of vertical V-arrangement grid 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 and there is the V-wing plate, 3 of receding angle: 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 one that the embodiment of the present invention provides vertical V-arrangement grid web plate, its by baffle upper plate 1, high aspect ratio and have receding angle V-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 and there is the V-wing plate 2 of receding angle, drag guiding principle stiffener 3 with each high aspect ratio and the V-wing plate 2 with receding angle be connected in turn, 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.
Described each high aspect ratio and to have the specification of the V-wing plate 2 of receding angle identical, structure is V-arrangement, symmetrical up and down, and meets flow path direction at wing plate and have certain retrogressing angle.
Described drag guiding principle stiffener 3 is equipped with drag guiding principle support, plate face is parallelogram sturcutre, the angle of its front and back end and baffle upper plate 1 are identical with chin spoiler 4 front end wedge shape, terminate from draging the front end of guiding principle stiffener 3 to rear end, connect each high aspect ratio in turn and have the V-wing plate 2 of receding angle.
As shown in Figure 1 to Figure 3, high aspect ratio wing plate has the advantage performance that induced resistance is low, lift-drag ratio is high, contribute to the expansionary force improving web plate, so multiple high aspect ratio, after the V-wing plate 2 with receding angle is combined into the web plate main body of a low aspect ratio, can be improved again mobility and the operation convenience of web plate.
As shown in Figure 1 to Figure 3, by adjusting each high aspect ratio and distance between the V-wing plate 2 with receding angle, and baffle upper plate 1, chin spoiler 4 front wedge shape angle, the impact of web plate back eddy current can be controlled, reach the object of regulation and control board spread force.
As shown in Figure 1 to Figure 3, by adjusting each high aspect ratio and there is the receding angle of V-wing plate 2 and the angle at the upper counterangle of receding angle, the stability of adjustable web plate and lodging resistance.
As shown in Figure 1 to Figure 3, high aspect ratio wing plate structure in the present invention is V-arrangement, upper counterangle degree is between 10 ° ~ 15 °, wing plate has certain receding angle meeting flow path direction, angle is between 10 ° ~ 15 °, its quantity needs to arrange 3-10 according to practical structures or intensity, drags guiding principle stiffener and can arrange 1-3.
Claims (5)
1. a vertical V-arrangement grid web plate, it is characterized in that: it is by baffle upper plate (1), high aspect ratio and there is the V-wing plate (2) of receding angle, drag guiding principle stiffener (3), chin spoiler (4) is formed, multiple high aspect ratio is set between baffle upper plate (1) and chin spoiler (4) and there is the V-wing plate (2) of receding angle, the upper and lower side of each wing plate 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), with equidistantly setting arranged in parallel backward, and guiding principle stiffener (3) is draged in setting between baffle upper plate (1) and chin spoiler (4), and the web plate main body of the formation low aspect ratio structure that is connected with each wing plate, overall in grid.
2. one according to claim 1 vertical V-arrangement grid web plate, 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 arc.
3. one according to claim 1 vertical V-arrangement grid web plate, it is characterized in that, the specification of described each high aspect ratio wing plate (2) is identical, structure is V-arrangement, upper and lower symmetry, upper counterangle degree is between 10 ° ~ 15 °, and meet flow path direction at wing plate and have certain retrogressing angle, angle is between 10 ° ~ 15 °.
4. one according to claim 1 vertical V-arrangement grid web plate, it is characterized in that, described drag guiding principle stiffener (3) is equipped with drag guiding principle support, plate face is parallelogram sturcutre, the angle of its front and back end and baffle upper plate (1) are identical with chin spoiler (4) front end wedge shape, terminate to rear end from draging guiding principle and strengthening the front end of version (3), connect each high aspect ratio in turn and there is the V-wing plate (2) of receding angle.
5. one according to claim 1 vertical V-arrangement grid web plate, 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 |
|---|---|---|---|
| CN201510261831.9A CN104855345B (en) | 2015-05-21 | 2015-05-21 | A kind of vertical V-arrangement grid web plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261831.9A CN104855345B (en) | 2015-05-21 | 2015-05-21 | A kind of vertical V-arrangement grid web plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104855345A true CN104855345A (en) | 2015-08-26 |
| CN104855345B CN104855345B (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510261831.9A Expired - Fee Related CN104855345B (en) | 2015-05-21 | 2015-05-21 | A kind of vertical V-arrangement grid web plate |
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| CN (1) | CN104855345B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105594670A (en) * | 2016-03-09 | 2016-05-25 | 中国水产科学研究院东海水产研究所 | Horizontal expansion device for Euphausia superba trawl net |
| 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 |
| CN112544576A (en) * | 2020-12-03 | 2021-03-26 | 中国水产科学研究院东海水产研究所 | Bottom trawl with bottom release structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2161351B (en) * | 1984-07-10 | 1988-01-13 | Kevin Joseph Mcloughlin | Otter boards |
| CN2834171Y (en) * | 2006-04-07 | 2006-11-08 | 励伟成 | Dragnet web plate |
| RU2292713C2 (en) * | 2004-11-26 | 2007-02-10 | Сергей Григорьевич Вантеев | Otter board (versions) |
| CN200967544Y (en) * | 2006-11-01 | 2007-10-31 | 象山禾丰机械厂 | Novel fishing boat net trawling plate |
| CN103250686A (en) * | 2013-06-13 | 2013-08-21 | 中国水产科学研究院东海水产研究所 | High-aspect-ratio double-arc surface-middle layer trawl board |
-
2015
- 2015-05-21 CN CN201510261831.9A patent/CN104855345B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2161351B (en) * | 1984-07-10 | 1988-01-13 | Kevin Joseph Mcloughlin | Otter boards |
| RU2292713C2 (en) * | 2004-11-26 | 2007-02-10 | Сергей Григорьевич Вантеев | Otter board (versions) |
| CN2834171Y (en) * | 2006-04-07 | 2006-11-08 | 励伟成 | Dragnet web plate |
| CN200967544Y (en) * | 2006-11-01 | 2007-10-31 | 象山禾丰机械厂 | Novel fishing boat net trawling plate |
| CN103250686A (en) * | 2013-06-13 | 2013-08-21 | 中国水产科学研究院东海水产研究所 | High-aspect-ratio double-arc surface-middle layer trawl board |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105594670A (en) * | 2016-03-09 | 2016-05-25 | 中国水产科学研究院东海水产研究所 | Horizontal expansion device for Euphausia superba trawl net |
| CN105594670B (en) * | 2016-03-09 | 2018-12-18 | 中国水产科学研究院东海水产研究所 | A kind of krill trawlnet horizontal expansion device |
| 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 |
| CN112544576A (en) * | 2020-12-03 | 2021-03-26 | 中国水产科学研究院东海水产研究所 | Bottom trawl with bottom release structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104855345B (en) | 2018-04-17 |
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Granted publication date: 20180417 Termination date: 20200521 |