CN107372384B - A kind of fish planktonic organism acquisition trawlnet - Google Patents
A kind of fish planktonic organism acquisition trawlnet Download PDFInfo
- Publication number
- CN107372384B CN107372384B CN201710667946.7A CN201710667946A CN107372384B CN 107372384 B CN107372384 B CN 107372384B CN 201710667946 A CN201710667946 A CN 201710667946A CN 107372384 B CN107372384 B CN 107372384B
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- CN
- China
- Prior art keywords
- bracket
- string bag
- trawlnet
- fish
- planktonic organism
- 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.)
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Links
- 241000251468 Actinopterygii Species 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 239000002775 capsule Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 230000000903 blocking effect Effects 0.000 abstract description 8
- 230000000366 juvenile effect Effects 0.000 description 7
- 239000003643 water by type Substances 0.000 description 7
- 239000013535 sea water Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 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
- A01K73/025—Regulation of net depth
-
- 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
- A01K73/06—Hauling devices for the headlines
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The invention discloses a kind of fish planktonic organisms to acquire trawlnet, including the string bag and it is fixed on the bracket of string bag opening, the bottom of the string bag is equipped with net capsule, the blocking apparatus of covering string bag opening is equipped in the bracket, the side of bracket is equipped with several dismountable floating balls and iron ball, and the edge of bracket is equipped with tow strap.The present invention is intended to provide a kind of be able to achieve the fish planktonic organism acquisition trawlnet accurately acquired in different water levels.
Description
Technical field
The invention belongs to technical field of fishery more particularly to a kind of fish planktonic organism to acquire trawlnet.
Background technique
In recent years, country gradually payes attention to fishery resources, put into effect that " Ministry of Agriculture is quasi- about marine fishing is implemented in succession
With the notice of fishing gear and transition fishing gear minimum size of mesh system " and " important fishery resources catchable size first part: ocean
Economic fish " etc. relevant announcements and standard, in this, as the foundation to protect fishery resourses.In fishery conservation, fish-egg and
Basis of the larva and juvenile as stock of fish supplement and Living resources of fisheries sustainable use, in research marine fish resource point
Cloth determines fishing ground fishing season etc. and is all of great significance.Carry out fish-egg and larva and juvenile investigation, to the understanding stock of fish and production
Power situation, protection and reasonable development fishery resources show important especially.How fish-egg and larva and juvenile are accurately acquired, is to determine rationally assessment
The basis of biomass resource.Current planktonic organism acquires trawlnet, and such as China Patent Publication No.: CN206274768 discloses one
Kind is swum for fixing the plankton net of water layer horizontal trawl sampling, including line concentration type buoy plate, plankton net and plummet
Biological net includes that successively nested plankton net, line concentration type buoy plate pass through the first rope and planktonic organism for the phases of three kinds of specifications
Net connection, the first rope are equipped with length scale, adjustable in length, and plummet is connect by the second rope with plankton net,
Under the action of plummet and line concentration type buoy plate, plankton net can complete the acquisition to fixed water layer planktonic organism sample.However
Such trawlnet can only be acquired in fixed water layer, be can not achieve and become water layer acquisition, and flexibility in use is poor.
Summary of the invention
It is able to achieve it is an object of the invention to overcome the defect of prior art, and provide one kind and is accurately adopted in different water levels
The fish planktonic organism of collection acquires trawlnet.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of fish planktonic organism acquires trawlnet, including the string bag and is fixed on the bracket of string bag opening, the string bag
Bottom be equipped with net capsule, the blocking apparatus of covering string bag opening is equipped in the bracket, the side of bracket is equipped with several detachable
Floating ball and iron ball, the edge of bracket is equipped with tow strap.In this way, acquisition trawlnet is connect by tow strap with acquisition vessel, acquisition vessel is expert at
Dragging acquisition trawlnet carries out the acquisition of fish planktonic organism during sailing.By adjusting acquisition trawlnet bracket upper floating ball and iron ball
Ratio changes the buoyancy size of acquisition trawlnet, ultimately corresponds to different acquisition water layers, when needs are adopted in the waters on more upper layer
Floating ball ratio is then improved when collection, when needing then to improve the ratio of iron ball when the waters of more lower layer acquires, to realize change water
The effect of layer acquisition.
Preferably, the bracket is in a ring, the floating ball and iron ball are evenly arranged on the outside of bracket, described
Bracket is equipped with the bracket body of rod of positioning floating ball and iron ball.
Preferably, the bracket is equipped with flowmeter and the fixed frame based on firm discharge.
Preferably, further including tow strap connector, the tow strap is evenly distributed on the edge of bracket, the end of the tow strap
Portion is fixed with tow strap connector.
Preferably, the blocking apparatus includes intercepting sieve, the mesh mesh number for intercepting sieve is less than the string bag
Mesh mesh number.Interception sieve on blocking apparatus can large volume of fish or object intercepted, reduce impurity in sample
Quantity, convenient for being acquired to fish-egg and larva and juvenile.
Preferably, the floating ball includes the shell of hard and the buoyancy adjustment room that is connected to shell, the buoyancy
The piston of sealing cooperation is equipped in regulation room, the outside of the buoyancy adjustment room is equipped with can be with piston in buoyancy adjustment room
The push plate of sliding, plane where the push plate is open with the string bag are parallel.In this way, being acquired when acquisition vessel pulls acquisition trawlnet
When, push plate is mobile to buoyancy adjustment room by the active force of seawater, to push piston to compress buoyancy adjustment room, by buoyancy tune
Section room air is depressed into shell, so that overall buoyancy reduces, sinks down into predetermined water layer convenient for acquisition trawlnet.
Preferably, the bracket is equipped with several baffles of rotation connection in string bag opening and can drive flapper closure
The torsional spring of string bag opening, the branch are provided with baffle limiting on the shank for closing string bag aperture position, the push plate
Equipped with releasing shank to the solution closing piece of baffle limiting.When acquisition trawlnet just has started to sink, seawater is smaller to the active force of push plate,
Shank keeps the limit effect to baffle, and the string bag is open and closes by baffle, and as acquisition vessel speed rises, seawater is for push plate
Active force increases, the final limit for releasing shank for baffle, acquires trawlnet at this time and also reaches predetermined water layer, baffle can after opening
It is acquired operation.In this way, can avoid collecting the biology in other water layers, guarantee that sampling is more accurate and reliable.
Preferably, the top of the shank is equipped with the guiding surface that can be contacted with solution closing piece, the branch is provided with drive
Shank is close to the reset spring of baffle, and drive shank is far from baffle when the solution closing piece acts on guiding surface.In this way, when pushing away
When plate is mobile to buoyancy adjustment room, solution closing piece acts on the guiding surface at the top of shank, so that shank releases the limit for baffle
Position, when solving the disappearance of closing piece active force, shank can reset under action of reset spring.
The beneficial effects of the present invention are: the ratio of (1) by adjusting floating ball and iron ball, changes the buoyancy of acquisition trawlnet, just
It is acquired operation in different water levels in realizing, versatility and flexibility are higher；(2) floating ball can change with acquisition foot
Buoyancy size sinks down into predetermined waters convenient for acquisition trawlnet and is acquired again, samples more accurate and reliable.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram at 2 floating ball of the embodiment of the present invention.
In figure: tow strap 1, iron ball 2, the bracket body of rod 3, floating ball 4, flowmeter 5, the string bag 6, net capsule 7, fixed frame 8, bracket 9 drag
Rope connection 10, push plate 11 solve closing piece 11a, piston 12, buoyancy adjustment room 13, reset spring 14, shank 15, guiding surface
15a, baffle 16.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1:
In embodiment as shown in Figure 1, a kind of fish planktonic organism acquires trawlnet, including the string bag 6 and is fixed on the string bag
The bracket 9 of opening, the bottom of the string bag are equipped with net capsule 7, and the etting that the string bag and net capsule are all made of higher mesh mesh number is made, is convenient for
Collect fish-egg and larva and juvenile.The side of bracket be equipped with several dismountable floating balls 4 and iron ball 2, bracket in a ring, the floating ball
It is evenly arranged on the outside of bracket with iron ball, bracket is equipped with the bracket body of rod 3 of positioning floating ball and iron ball, and floating ball and iron ball can
It is fixed by the way of coupler body hanging with the bracket body of rod, is mounted and dismounted when being conveniently adjusted.
The blocking apparatus of covering string bag opening is equipped in bracket, blocking apparatus includes intercepting sieve, intercepts the mesh of sieve
Mesh number is less than the mesh mesh number of the string bag.The edge of bracket is equipped with tow strap 1, and tow strap shares three, and three tow straps are angularly distributed in
The end of bracket edge, three tow straps is equipped with tow strap connector 10, and end and the tow strap connector of tow strap are fixed, tow strap connector
For being attached with acquisition vessel, it is convenient for pulling.Bracket is equipped with flowmeter 5, and flowmeter is located at the center of bracket, and leads to
Fixed frame 8 is crossed to be fixed.
In actual use, acquisition trawlnet is connect by the tow strap connector of tow strap end with acquisition vessel, is being launched
Before, staff passes through the ratio of adjusting bracket upper floating ball and iron ball, to change the buoyancy size of acquisition trawlnet.It is adjusting
When, it needs then to properly increase floating ball ratio when the waters on more upper layer acquires, when needs are when the waters of more lower layer acquires
The ratio of iron ball is then properly increased, to realize the effect for becoming water layer acquisition.After acquiring in trawlnet investment water, acquisition vessel is being travelled
Dragging acquisition trawlnet in the process, acquisition trawlnet sink down into scheduled water layer, carry out the acquisition of fish planktonic organism.
Embodiment 2
In embodiment as shown in Figure 1, a kind of fish planktonic organism acquires trawlnet, including the string bag 6 and is fixed on the string bag
The bracket 9 of opening, the bottom of the string bag are equipped with net capsule 7, and the etting that the string bag and net capsule are all made of higher mesh mesh number is made, is convenient for
Collect fish-egg and larva and juvenile.The side of bracket be equipped with several dismountable floating balls 4 and iron ball 2, bracket in a ring, the floating ball
It is evenly arranged on the outside of bracket with iron ball, bracket is equipped with the bracket body of rod 3 of positioning floating ball and iron ball, and floating ball and iron ball can
It is fixed by the way of coupler body hanging with the bracket body of rod, is mounted and dismounted when being conveniently adjusted.
The blocking apparatus of covering string bag opening is equipped in bracket, blocking apparatus includes intercepting sieve, intercepts the mesh of sieve
Mesh number is less than the mesh mesh number of the string bag.The edge of bracket is equipped with tow strap 1, and tow strap shares three, and three tow straps are angularly distributed in
The end of bracket edge, three tow straps is equipped with tow strap connector 10, and end and the tow strap connector of tow strap are fixed, tow strap connector
For being attached with acquisition vessel, it is convenient for pulling.Bracket is equipped with flowmeter 5, and flowmeter is located at the center of bracket, and leads to
Fixed frame 8 is crossed to be fixed.
As shown in connection with fig. 2, floating ball includes the shell of hard and the buoyancy adjustment room 13 that is connected to shell, buoyancy adjustment room
The interior piston 12 for being equipped with sealing cooperation, the outside of buoyancy adjustment room are equipped with the push plate that can be slid in buoyancy adjustment room with piston
11, plane where push plate is open with the string bag is parallel.Bracket is equipped with several baffles 16 being rotatablely connected in string bag opening and can
The torsional spring of flapper closure string bag opening is driven, branch is provided with baffle limiting in the shank 15 for closing string bag aperture position, push plate
It is equipped with and releases shank to the solution closing piece 11a of baffle limiting.The top of shank is equipped with the guiding surface that can be contacted with solution closing piece
15a, branch are provided with the reset spring 14 for driving shank close to baffle, and solution closing piece drives shank far from gear when acting on guiding surface
Plate.
In actual use, acquisition trawlnet is connect by the tow strap connector of tow strap end with acquisition vessel, is being launched
Before, staff passes through the ratio of adjusting bracket upper floating ball and iron ball, to change the buoyancy size of acquisition trawlnet.It is adjusting
When, it needs then to properly increase floating ball ratio when the waters on more upper layer acquires, when needs are when the waters of more lower layer acquires
The ratio of iron ball is then properly increased, to realize the effect for becoming water layer acquisition.After acquiring in trawlnet investment water, acquisition vessel is being travelled
Dragging acquisition trawlnet in the process, acquisition trawlnet sink down into scheduled water layer, carry out the acquisition of fish planktonic organism.When acquisition vessel is dragged
Acquisition trawlnet is dragged when being acquired, push plate is mobile to buoyancy adjustment room by the active force of seawater, so that piston be pushed to compress
Buoyancy adjustment room air is depressed into shell by buoyancy adjustment room, so that overall buoyancy reduces, is sunk down into convenient for acquisition trawlnet pre-
Determine water layer.Meanwhile solving closing piece and acting on the guiding surface at the top of shank, so that shank releases the limit for baffle, seawater is pushed away
The string bag is open by dynamic baffle to be opened, and is acquired to fish-egg and larva and juvenile.When acquisition loses way preparation receipts net, seawater is to push plate
It being reduced with the active force of baffle, piston reverses direction is mobile, and the buoyancy of floating ball increases, it floats convenient for acquisition trawlnet, meanwhile, solve closing piece pair
It disappears in the active force of guiding surface, shank can reset under action of reset spring, and shank will carry out baffle when flapper closure
Limit.
Claims (6)
1. a kind of fish planktonic organism acquires trawlnet, characterized in that including the string bag (6) and be fixed on the string bag (6) opening
The bottom of bracket (9), the string bag (6) is equipped with net capsule (7), and the interception dress of the covering string bag (6) opening is equipped in the bracket (9)
It sets, the side of bracket (9) is equipped with several dismountable floating balls (4) and iron ball (2), and the edge of bracket (9) is equipped with tow strap (1), institute
The shell that floating ball (4) includes hard and the buoyancy adjustment room (13) being connected to shell are stated, the buoyancy adjustment room (13) is interior
Piston (12) equipped with sealing cooperation, the outside of the buoyancy adjustment room (13) is equipped with can be with piston (12) in buoyancy adjustment
The push plate (11) slid in room (13), plane where the push plate (11) is open with the string bag (6) is parallel, and the bracket (9) exists
The torsion that the string bag (6) opening is equipped with several baffles (16) of rotation connection and baffle (16) can be driven to close the string bag (6) opening
Spring, the bracket (9) are equipped with baffle (16) limit in the shank (15) for closing the string bag (6) aperture position, the push plate
(11) it is equipped with and releases the solution closing piece (11a) that shank (15) limit baffle (16).
2. a kind of fish planktonic organism according to claim 1 acquires trawlnet, characterized in that the bracket (9) in a ring,
The floating ball (4) and iron ball (2) is evenly arranged on the outside of bracket (9), and the bracket (9) is equipped with positioning floating ball
(4) and the bracket body of rod (3) of iron ball (2).
3. a kind of fish planktonic organism according to claim 1 acquires trawlnet, characterized in that set on the bracket (9)
Have flowmeter (5) and based on firm discharge (5) fixed frame (8).
4. a kind of fish planktonic organism according to claim 1 or 2 or 3 acquires trawlnet, characterized in that further include that tow strap connects
It connects device (10), the tow strap (1) is evenly distributed on the edge of bracket (9), the end of the tow strap (1) and tow strap connector
(10) fixed.
5. a kind of fish planktonic organism according to claim 1 or 2 or 3 acquires trawlnet, characterized in that the interception dress
It sets including intercepting sieve, the mesh mesh number for intercepting sieve is less than the mesh mesh number of the string bag (6).
6. a kind of fish planktonic organism according to claim 1 acquires trawlnet, characterized in that the top of the shank (15)
Equipped with the guiding surface (15a) that can be contacted with solution closing piece (11a), the bracket (9), which is equipped with, drives shank (15) close to baffle
(16) reset spring (14), the solution closing piece (11a) drive shank (15) far from baffle when acting on guiding surface (15a)
(16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667946.7A CN107372384B (en) | 2017-08-07 | 2017-08-07 | A kind of fish planktonic organism acquisition trawlnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667946.7A CN107372384B (en) | 2017-08-07 | 2017-08-07 | A kind of fish planktonic organism acquisition trawlnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107372384A CN107372384A (en) | 2017-11-24 |
| CN107372384B true CN107372384B (en) | 2019-09-24 |
Family
ID=60354466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710667946.7A Active CN107372384B (en) | 2017-08-07 | 2017-08-07 | A kind of fish planktonic organism acquisition trawlnet |
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| Country | Link |
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| CN (1) | CN107372384B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108514A (en) * | 2019-04-22 | 2019-08-09 | 中国水产科学研究院东海水产研究所 | The micro- plastics acquisition device of the water surface |
| CN111436388B (en) * | 2020-04-16 | 2022-10-18 | 河北农业大学 | Method and device for protecting fish resources in water transfer engineering |
| CN111551397B (en) * | 2020-04-17 | 2022-10-28 | 浙江省海洋水产研究所 | Micro-plastic sampling device for seawater proportional concentration |
| CN111528186B (en) * | 2020-05-27 | 2024-06-18 | 中国水产科学研究院东海水产研究所 | Antarctic krill truss rod trawl lifting and diving self-powered adjusting device |
| CN111802341B (en) * | 2020-06-01 | 2022-04-05 | 浙江省海洋水产研究所 | Rotary fishing device and fishing method |
| CN111631196B (en) * | 2020-06-01 | 2022-05-17 | 浙江省海洋水产研究所 | Marine organism fishing method |
| CN111631172A (en) * | 2020-06-22 | 2020-09-08 | 中国水产科学研究院东海水产研究所 | Groove-shaped frame type bottom layer swimming animal collecting net |
| CN111727941A (en) * | 2020-06-22 | 2020-10-02 | 中国水产科学研究院东海水产研究所 | Frame structure of bottom layer biological collection net in sea and mountain area |
| NO346570B1 (en) * | 2020-09-23 | 2022-10-17 | Geiga As | Trawl device for collecting sea lice and related method |
| CN114731991A (en) * | 2022-04-08 | 2022-07-12 | 中船黄埔文冲船舶有限公司 | Marine fishing boat and fishing net fishing device |
| CN114600843B (en) * | 2022-04-18 | 2023-05-23 | 海南省海洋与渔业科学院 | Fishing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201682896U (en) * | 2010-03-25 | 2010-12-29 | 中国水产科学研究院长江水产研究所 | Collection net for living beings at bottom layer of river |
| CN204599005U (en) * | 2015-03-05 | 2015-09-02 | 巢湖市瑞强渔具有限责任公司 | A kind of fishing net of the adjustable off line degree of depth |
| CN206274768U (en) * | 2016-11-17 | 2017-06-27 | 中国海洋大学 | A kind of plankton net for fixing water layer horizontal trawl sampling |
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2017
- 2017-08-07 CN CN201710667946.7A patent/CN107372384B/en active Active
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