CN100397986C - Single dragging rope self expanding type single ship middle layer dragnet - Google Patents
Single dragging rope self expanding type single ship middle layer dragnet Download PDFInfo
- Publication number
- CN100397986C CN100397986C CNB2004100890669A CN200410089066A CN100397986C CN 100397986 C CN100397986 C CN 100397986C CN B2004100890669 A CNB2004100890669 A CN B2004100890669A CN 200410089066 A CN200410089066 A CN 200410089066A CN 100397986 C CN100397986 C CN 100397986C
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- guiding principle
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- canvas
- netting gear
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Abstract
The present invention relates to a self expanding type single-ship mid-water trawl of a single drag rope, particularly to a single-ship mid-water trawl used for the investigation and the fishing of marine biological resources. The present invention needs to solve a problem that operation can not be normally developed by using a traditional single ship trawling mode in the process of developing fishing production or undertaking the investigation of the biological resources by using only one winch. The present invention has the technical scheme that the present invention is formed by the assembly of a drag rope, a cross rope, a web plate and a trawl net and is characterized in that the web plate is a sawtooth-shaped flexible level expander which is connected by a plurality of pieces of triangular sailcloth in series and is arranged on the left and the right of a net mouth, the width of the flexible level expander on each side is 800mm, height is 4730mm, and one side of each sawtoothed taper angle of the triangular sailcloth of the flexible level expander is connected with the netting of the net; a steel pipe is horizontally bound on the sailcloth, the end of the steel pipe is connected with the cross rope, and the front end of the cross rope is integrally connected with the drag rope. The present invention is particularly suitable for non-professional fishing production ships to undertake a task of the investigation of fishery resources.
Description
Technical field:
The present invention relates to living marine resources and investigate and fish for single ship middle layer trawl of usefulness.
Background technology
The middle layer trawl that present single ship uses is assemblied by the netting gear that drags guiding principle, web plate, fork guiding principle and trawlnet, drags guiding principle and is connected in the web plate front side, and the fork guiding principle is connected between web plate rear side and the netting gear, and netting gear is raised to the higher plane of principle and is equipped with float, and infraclass is equipped with sinker.In the trawlnet process, by two two blocks of web plates that drag guiding principle difference traction, web plate produces the expansionary force of side direction under flow action, make the traw mouth horizontal expansion; Float then makes traw mouth partly produce vertical expansion with sinker.Need two winches in the operation ship above-decks equipment of this middle layer trawl,, can't adopt traditional single boat trawl mode, put net operation for normal and just can't carry out for the boats and ships that only are equipped with a winch.
Summary of the invention
The present invention need solve the part boats and ships because of a winch is only arranged in the deck machinery equipment, carry out fish for produce or the living resources fact-finding process in, the problem that can't utilize traditional single boat trawl operating type normally to carry out the work, need provide one of a kind of usefulness drag guiding principle can rise put the net operation singly drag the guiding principle trawlnet.
Technical scheme of the present invention assemblies by draging guiding principle, fork guiding principle, web plate, trawlnet netting gear, it is characterized in that web plate is to be concatenated into the flexible horizontal expander that zigzag is contained in the network interface left and right sides with polylith triangle canvas, the wide 800mm of every side flexible horizontal expander, high 4730mm, triangle canvas zigzag wedge angle one side of flexible horizontal expander links to each other with the netting gear etting, and level is whipped steel pipe on canvas, steel pipe end yoke guiding principle, the set of fork guiding principle front end is connected in one and drags guiding principle.
The present invention is owing to adopt flexible horizontal expander, and flexible horizontal expander directly is contained in the network interface both sides, in the trawlnet process, the flexible horizontal expander of both sides produces the expansionary force of side direction under flow action, make traw mouth part of horizontal expansion, will pitch guiding principle simultaneously and gather and be connected in one and drag guiding principle, therefore, only need one to drag guiding principle and just can rise and put the net operation, solved the single twist cabling machine boats and ships and can't carry out and fish for and carry out the difficult problem that living resources are investigated.The present invention is particularly suitable for amateur fishing for when the production ship is born the fishery resources survey task and uses.
Description of drawings
What Fig. 1 represented is the structural representation of flexible horizontal expander.
What Fig. 2 represented is singly to drag guiding principle trawlnet schematic diagram.
Embodiment
Implement best way of the present invention below in conjunction with description of drawings:
(see figure 2) of the present invention is by draging guiding principle 4, fork guiding principle 5, web plate 6, trawlnet netting gear 3 assemblies, it is characterized in that web plate 6 is to be concatenated into the flexible horizontal expander that zigzag is contained in the network interface left and right sides with polylith triangle canvas, flexible horizontal expander adopts 8 triangle canvas (see figure 1)s altogether, each is concatenated into zigzag respectively with 4 triangle canvas 2 every side, the wide 800mm of the flexible horizontal expander of each side, high 4730mm, the vertical length of side 850mm of triangle canvas of bottom, every vertical length of side 1600mm of the 2 triangle canvas in middle part, the vertical length of side 680mm of top triangle canvas, about two flexible expander gross areas be 3.784m
2, the triangle canvas area of bottom produces downward potentiality greater than the triangle canvas area on top in the use;
The horizontal expansion of netting gear by netting gear about the flexible horizontal expander of two sides finish, zigzag the top of the horn one side of flexible horizontal expander triangle canvas links to each other with the etting of netting gear 3, and whip on canvas with 4 diameter 38mm steel pipe 1 levels, in order to keep the horizontal range of canvas, steel pipe 1 end yoke guiding principle 5 (Fig. 2) can be regulated the angle of attack of expanding canvas by the fork guiding principle;
The trawlnet netting gear adopts the four-piece type structure, and the ratio of back of the body belly and side net mesh is 8: 8, and size of mesh is anterior to adopt 3m, and progressively dwindles to the rear portion, to the keed mesh be 0.1m, whole top netting gear network interface tension girth is 96m, the netting gear total length is 42.81m.The vertical expansion of netting gear is equipped with the buoyancy of float by netting gear and the heavy power of sinker is regulated, and drifts along than being equipped with less than 1.
Claims (3)
1. singly drag the single ship middle layer trawl of guiding principle self expandable formula, assembly by draging guiding principle, fork guiding principle, web plate, trawlnet netting gear, it is characterized in that web plate is to be concatenated into the flexible horizontal expander that zigzag is contained in the network interface left and right sides with polylith triangle canvas, the wide 800mm of every side flexible horizontal expander, high 4730mm, triangle canvas zigzag wedge angle one side of flexible horizontal expander links to each other with the netting gear etting, and level is whipped steel pipe on canvas, steel pipe end yoke guiding principle, and the set of fork guiding principle front end is connected in one and drags guiding principle.
2. the single ship middle layer trawl of guiding principle self expandable formula that singly drags according to claim 1 is characterized in that the diameter of steel tube 38mm of level whipping on canvas.
3. the single ship middle layer trawl of guiding principle self expandable formula that singly drags according to claim 1, it is characterized in that the trawlnet netting gear adopts the four-piece type structure, the ratio of back of the body belly and side net mesh is 8: 8, the anterior 3m that adopts of size of mesh, and progressively dwindle to the rear portion, to the keed mesh be 0.1m, whole top netting gear network interface tension girth is 96m, total length is 42.81m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100890669A CN100397986C (en) | 2004-12-03 | 2004-12-03 | Single dragging rope self expanding type single ship middle layer dragnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100890669A CN100397986C (en) | 2004-12-03 | 2004-12-03 | Single dragging rope self expanding type single ship middle layer dragnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1781367A CN1781367A (en) | 2006-06-07 |
| CN100397986C true CN100397986C (en) | 2008-07-02 |
Family
ID=36772297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100890669A Expired - Fee Related CN100397986C (en) | 2004-12-03 | 2004-12-03 | Single dragging rope self expanding type single ship middle layer dragnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100397986C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103168754A (en) * | 2013-03-29 | 2013-06-26 | 中国水产科学研究院东海水产研究所 | Method enabling trawl net to vertically expand |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101080143B1 (en) * | 2011-07-13 | 2011-11-07 | 박명자 | Improved stow net |
| CN102410786B (en) * | 2011-11-02 | 2013-09-18 | 中国船舶重工集团公司第七一〇研究所 | Towing net bag type device for intercepting suspended matter in water for single ship |
| CN102657108A (en) * | 2012-04-01 | 2012-09-12 | 中国水产科学研究院东海水产研究所 | Device and method for detecting central shrimp fishing ground |
| CN104304200B (en) * | 2014-09-23 | 2017-06-06 | 浙江海洋学院 | A kind of flexible net expansing device |
| CN105766821B (en) * | 2016-03-10 | 2018-10-26 | 水利部中国科学院水工程生态研究所 | Chinese sturgeon larvae is layered the application method of collecting net |
| CN109077032A (en) * | 2018-08-30 | 2018-12-25 | 上海海洋大学 | A kind of fish-egg larva and juvenile quantitative sampling net of the flexible sedimentation sail of band |
| CN109077033A (en) * | 2018-08-30 | 2018-12-25 | 上海海洋大学 | A kind of multi-joint quantitative sampling net of fish-egg larva and juvenile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB216418A (en) * | 1923-09-06 | 1924-05-29 | Andre Eugene Marty | Improvements in and relating to the towing and opening of drag nets for fishing |
| CN2090160U (en) * | 1991-05-03 | 1991-12-11 | 威海网具厂 | Superficial drawn net |
-
2004
- 2004-12-03 CN CNB2004100890669A patent/CN100397986C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB216418A (en) * | 1923-09-06 | 1924-05-29 | Andre Eugene Marty | Improvements in and relating to the towing and opening of drag nets for fishing |
| CN2090160U (en) * | 1991-05-03 | 1991-12-11 | 威海网具厂 | Superficial drawn net |
Non-Patent Citations (6)
| Title |
|---|
| 单船拖网柔性网板的研究. 虞聪达，宋伟华.浙江海洋学院学报（自然科学版），第18卷第1期. 1999 |
| 单船拖网柔性网板的研究. 虞聪达，宋伟华.浙江海洋学院学报（自然科学版），第18卷第1期. 1999 * |
| 四片式中层拖网主要部件尺寸变化对其性能的影响. 陈雪忠，郁岳锋，刘峰，石承军.水产学报，第21卷第1期. 1997 |
| 四片式中层拖网主要部件尺寸变化对其性能的影响. 陈雪忠，郁岳锋，刘峰，石承军.水产学报，第21卷第1期. 1997 * |
| 小型渔船单拖网技术. 于长清，许传才，李书德，考伟.水产科学，第18卷第5期. 1999 |
| 小型渔船单拖网技术. 于长清，许传才，李书德，考伟.水产科学，第18卷第5期. 1999 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103168754A (en) * | 2013-03-29 | 2013-06-26 | 中国水产科学研究院东海水产研究所 | Method enabling trawl net to vertically expand |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1781367A (en) | 2006-06-07 |
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