CN202896841U - Vertical double-seam net board of middle-layer trawl - Google Patents
Vertical double-seam net board of middle-layer trawl Download PDFInfo
- Publication number
- CN202896841U CN202896841U CN 201220519589 CN201220519589U CN202896841U CN 202896841 U CN202896841 U CN 202896841U CN 201220519589 CN201220519589 CN 201220519589 CN 201220519589 U CN201220519589 U CN 201220519589U CN 202896841 U CN202896841 U CN 202896841U
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- net board
- guiding plate
- flow guiding
- plate
- vertical double
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Abstract
The utility model discloses a vertical double-seam net board of a middle-layer trawl. The vertical double-seam net board of the middle-layer trawl is characterized by comprising a net board body. The net board body comprises a warp board, an upper panel and a lower panel, wherein the upper panel and the lower panel are vertically arranged on two sides of the warp board and share the same shape. The upper panel comprises a first upper flow guiding plate, a second upper flow guiding plate and a third upper flow guiding plate. Seams are arranged among the first upper flow guiding plate, the second upper flow guiding plate and the third upper flow guiding plate. The length-width ration of the net board body ranges from 2:1 to 2.5:1. The vertical double-seam net board of the middle-layer trawl is good in hydrodynamic force performance, simple in structure, low in manufacture cost and suitable for ocean operation with adverse working conditions. The design of double seams can prevent an eddy zone from forming when the net board is in operation so that lifting force is improved and resisting force is reduced.
Description
Technical field
The utility model relates to the web plate that the expansion netting gear is used in the single boat trawl operation.
Background technology
Early stage otter-trawl operation uses framework to fix the shape of network interface.But for comparatively large-scale trawlnet, because the size of framework such as is operated, lays at the restriction of aspect, great restriction has also been received in its development.
In the twenties in 20th century, people have invented web plate, have substituted framework, so just make netting gear break away from the restriction of framework, make the possibility of the oriented large scale development of netting gear.
General web plate require its under water during operation hydrodynamic performance reach optimum regime.Should be according to the sea area characteristics during use, the power of fishing boat, fish for object, operation fishing ground, fish for water layer, facility condition etc., select suitable web plate type.Simultaneously, in the web plate design, must satisfy following several conditions: 1) in certain towing speed scope, the expansion of netting gear is remained unchanged substantially; 2) require web plate to have larger expansionary force and less resistance; 3) stability of web plate will be got well in operation process, and the marine site that can adapt to different geology is used; 4) require web plate to use, adjust simply, processing, maintenance and economical and practical.Wherein the most important thing is to require web plate under certain towing tension, towing speed condition, have large as far as possible expansionary force and less water resistance.
Present midwater trawl structurally also has improved space, how therefore stability and the dilatancy of web plate in operation process be provided, and the reduction drag coefficient, make easy to process, adjust simply, it is that web plate enterprise is explored, the problem of research that service expenditure reduces always.
Summary of the invention
For the deficiencies in the prior art, a kind of vertical double slit web plate of midwater trawl is provided, its hydrodynamic performance is better, and simple in structure, and cost of manufacture is cheap.Be fit to the abominable marine site operation of operating mode.
The utility model is achieved through the following technical solutions: the vertical double slit web plate of midwater trawl, comprise the web plate body, described web plate body comprises warp plate and is vertically installed in top panel and the lower faceplate of warp plate both sides, described top panel is identical with lower panel structure, described top panel comprises the first baffle upper plate, the second baffle upper plate and the 3rd baffle upper plate that is parallel to each other, form sealing between described the first baffle upper plate, the second baffle upper plate and the 3rd baffle upper plate, the aspect ratio bit of described web plate body is in the interval of 2:1 to 2.5:1.
The utility model compared with prior art, have following beneficial effect: hydrodynamic performance is better, and simple in structure, cost of manufacture is cheap.Be fit to the abominable marine site operation of operating mode.And the design of double slit mouth can prevent that web plate from forming eddy zone in operational process, improves lift, reduces resistance.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is along the cutaway view at A-A place among Fig. 1.
Fig. 3 is the cross-sectional schematic of the utility model Weight plate.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment the utility model is described in further detail: referring to Fig. 1 to Fig. 2, the vertical double slit web plate of midwater trawl, comprise web plate body 1, described web plate body 1 comprises warp plate 2 and is vertically installed in the top panel 3 and lower faceplate 4 of warp plate 2 both sides, described top panel 3 is identical with lower faceplate 4 structures, described top panel 3 comprises the first baffle upper plate 30 that is parallel to each other, the second baffle upper plate 31 and the 3rd baffle upper plate 32, described the first baffle upper plate 30,32 of the second baffle upper plate 31 and the 3rd baffle upper plates form sealing 33, the aspect ratio bit of described web plate body 1 is guaranteeing to guarantee its stability when web plate can produce the large tension force of trying one's best in the interval of 2:1 to 2.5:1.
In described sealing 33, be fixedly installed the some gussets 6 that are parallel to each other, so that strengthen the intensity of web plate.
Be fixed with Weight plate 7 at the web plate sidewall, referring to Fig. 3, the tangent plane of described Weight plate 7 is curved, and Weight plate 7 comprises fixed leg 71, is provided with the first plate body 72 and the second plate body 70 at the two ends of described fixed leg 71 detouchable.When dismounting the second plate body 70, the web plate overall weight reduces, and therefore can adjust web plate it is towed in higher water layer; When dismounting during the first plate body 72, the web plate overall weight descends, and current can produce larger lift when directly impacting fixed leg 71, with respect to dismounting the second plate body 70, and can be in higher water layer operation.
Claims (2)
1. the vertical double slit web plate of midwater trawl, it is characterized in that: comprise web plate body (1), described web plate body (1) comprises warp plate (2) and is vertically installed in the top panel (3) and lower faceplate (4) of warp plate (2) both sides, described top panel (3) is identical with lower faceplate (4) shape, described top panel (3) comprises the first baffle upper plate (30), the second baffle upper plate (31) and the 3rd baffle upper plate (32), described the first baffle upper plate (30), form sealing (33) between the second baffle upper plate (31) and the 3rd baffle upper plate (32), the aspect ratio of described web plate body (1) is 2:1 to 2.5:1.
2. the vertical double slit web plate of midwater trawl according to claim 1 is characterized in that: be fixedly installed gusset (6) in described sealing (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519589 CN202896841U (en) | 2012-10-11 | 2012-10-11 | Vertical double-seam net board of middle-layer trawl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519589 CN202896841U (en) | 2012-10-11 | 2012-10-11 | Vertical double-seam net board of middle-layer trawl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202896841U true CN202896841U (en) | 2013-04-24 |
Family
ID=48117541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220519589 Expired - Fee Related CN202896841U (en) | 2012-10-11 | 2012-10-11 | Vertical double-seam net board of middle-layer trawl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202896841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340186A (en) * | 2013-06-13 | 2013-10-09 | 中国水产科学研究院东海水产研究所 | High-aspect-ratio double-cambered-surface trawl otter board and buoyancy-sinking force ratio adjusting method thereof |
-
2012
- 2012-10-11 CN CN 201220519589 patent/CN202896841U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340186A (en) * | 2013-06-13 | 2013-10-09 | 中国水产科学研究院东海水产研究所 | High-aspect-ratio double-cambered-surface trawl otter board and buoyancy-sinking force ratio adjusting method thereof |
| CN103340186B (en) * | 2013-06-13 | 2016-03-02 | 中国水产科学研究院东海水产研究所 | The two cambered surface trawl board of a kind of high aspect ratio and drift along and compare control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JESSN OCEAN EQUIPMENT LTD. Free format text: FORMER NAME: NINGBO GESSN OCEAN EXPLOITATION CO., LTD. Owner name: JESSN OCEAN EQUIPMENT CO., LTD. Free format text: FORMER NAME: JESSN OCEAN EQUIPMENT LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee after: JESSN MARINE EQUIPMENT Co.,Ltd. Address before: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee before: Victory Marine Equipment Co.,Ltd. Address after: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee after: Victory Marine Equipment Co.,Ltd. Address before: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee before: NINGBO JESSN OCEAN DEVELOPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20201011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |