CN203302181U - Push net sampling device for investigating quantity of whitebait resources in reservoir - Google Patents
Push net sampling device for investigating quantity of whitebait resources in reservoir Download PDFInfo
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- CN203302181U CN203302181U CN2013203252791U CN201320325279U CN203302181U CN 203302181 U CN203302181 U CN 203302181U CN 2013203252791 U CN2013203252791 U CN 2013203252791U CN 201320325279 U CN201320325279 U CN 201320325279U CN 203302181 U CN203302181 U CN 203302181U
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Abstract
The utility model discloses a push net sampling device for investigating quantity of whitebait resources in a reservoir. The push net sampling device comprises a trapezoidal frame, a polyethylene bag net, a diesel ship, an iron rotation shaft, a rotation ring, polyethylene pulling ropes and a retaining ring, wherein the polyethylene bag net is arranged at the bottom of the trapezoidal frame, the trapezoidal frame is connected to a deck at the front end of the diesel ship through the iron rotation shaft and the rotation ring and connected with two sides of the diesel ship through the polyethylene pull ropes, and the retaining ring is welded on the diesel ship. The push net sampling device is simple in structure and convenient and flexible to use, is suitable for sampling in an open water region in the reservoir, brings convenience for collecting fishes, is small in sampling workload, belongs to an initiative sampling device, and is capable of achieving the purpose of quantitatively estimating the quantity of the whitebait resources in the reservoir.
Description
Technical field
The utility model relates to Inland Water Icefish Resource technique for investigation field, and particularly a kind of sampling apparatus of pushing net that Icefish Resource is carried out quantitative interview in reservoir, be applicable to the industries such as fishery and environmental protection.
Background technology
Silverfish is the important small-sized economic fish of the middle and lower reach of Yangtze River and attached water body thereof, and life cycle is generally 1 year, and due to nutritious, economic worth is high, has extensively been moved lake or the reservoir of growing nearly 20 provinces and cities to the whole nation.Yet in some water bodys, the silverfish population is often unstable, after explosive growth, may occur significantly descending suddenly, even total crop failure; The simultaneously population of silverfish outburst often causes other indigenous stock of fish decline, to plankton community and even water quality directly and remote-effects also have dispute.To the investigation of Icefish Resource amount (being population density and biomass) thereby be the basis of reservoir Icefish Resource management and use.
The method of sampling is the difficult point place of estimation reservoir stock of fish amount, need to choose appropriate sampling apparatus for different reservoir habitat, respondent and survey objective.Silverfish mainly lives in the spacious pool of reservoir at the middle and upper levels, individual little, mobility a little less than, conventional passivity fishing gear such as gill net are usually not good enough to its fishing efficiency, therefore be necessary and the little characteristics of silverfish scope of activities few for spacious pool barrier, develop the initiative sampling apparatus of suitable reservoir Icefish Resource investigation, and can reach the purpose of quantitative sampling.
Summary of the invention
The purpose of this utility model is to be to provide a kind of sampling apparatus of pushing net of investigating reservoir Icefish Resource amount, simple in structure, and easy to use and flexible is suitable to reservoir spacious pool sampling, can truly reflect density and the biomass of reservoir silverfish population.
In order to realize above-mentioned purpose, the utility model adopts following technical measures:
A kind of sampling apparatus of pushing net of investigating reservoir Icefish Resource amount, it comprises ladder-shaped frame (1), polyethylene landing net (2), diesel ship (3), irony turning cylinder (4), swivel becket (5), polyethylene stay cord (6) and clasp (7), it is characterized in that: polyethylene landing net (2) is arranged on the bottom of ladder-shaped frame (1), ladder-shaped frame (1) is connected on diesel ship (3) front end deck by irony turning cylinder (4) and swivel becket (5), by polyethylene stay cord (6), be connected with diesel ship (3) both sides, clasp (7) is welded on diesel ship (3).
Described ladder-shaped frame is made by wooden frame, high 5.5-6.5m, the long 1-2m of top margin, bottom side length 1.5-2.3m, and each is reinforced left and right upper angle by a batten, is reinforced by a ledger strip apart from top margin 1.5-2.5m place.
The monolayer polyethylene etting that described polyethylene landing net is 1.5-2.5mm by inner diameter of mesh is made, the long 2.5-3.5m of landing net, the landing net end closes up by polyethylene rope slip-knot processed, and the square sack of length of side 1.2-1.7m is connected on the base and two sides of ladder-shaped frame.
The two ends of described irony turning cylinder are separately fixed at the centre position of ladder-shaped frame dual-side, by the irony swivel becket, are connected on the front end deck of diesel ship.The polyethylene stay cord connects the irony clasp of ladder-shaped frame dual-side apart from top margin 0.5m place and hull both sides middle position.
The utility model is when off working state, and by turning cylinder and swivel becket, stay cord turns to ladder-shaped frame parallel with deck level; During duty, stay cord turns to it vertical with deck level, and now framework bottom and the landing net that is connected are immersed in water, and under the impetus of motor vessel, water filters from landing net, and silverfish is intercepted in net a little less than because of the ability of moving about.After one hour, bring to, by stay cord, framework is transferred back to parallelly with deck level, landing net surfaces, and a shake bag clothing, make to net interior silverfish and be concentrated to the landing net end, unties rope slip-knot processed, therefrom gets fish, weighs, counts.According to sack area, ship's speed and running time, calculate the discharge that filters landing net, obtain thus silverfish density and biomass in unit bodies ponding.
The utility model has the advantages that:
1) simple in structure, easy to use and flexible is suitable to reservoir spacious pool sampling;
2) the collection fish are convenient, and the sampling work amount is little;
3) belong to the initiative sampling apparatus, can reach the purpose of quantitative estimation reservoir Icefish Resource amount.
Thereby this sampling apparatus can be used for quantitative interview reservoir Icefish Resource amount, has certain application prospect in fields such as fishery program and water environment assessments.
The accompanying drawing explanation
Fig. 1 is a kind of sampling apparatus of pushing net of investigating reservoir Icefish Resource amount.
Fig. 2 is a kind of off working state schematic diagram.
Wherein: 1-ladder-shaped frame, the wooden frame of 1-1-, 1-2-batten, 1-3-ledger strip;
The 2-landing net, 2-1-monolayer polyethylene etting, 2-2-polyethylene rope slip-knot processed;
The 3-diesel ship; The 4-turning cylinder; The 5-swivel becket; The 6-stay cord; The 7-clasp.
Embodiment
Embodiment 1:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As depicted in figs. 1 and 2, a kind of sampling apparatus of pushing net of investigating reservoir Icefish Resource amount, comprise ladder-shaped frame 1, polyethylene landing net 2, diesel ship 3, irony turning cylinder 4, swivel becket 5, polyethylene stay cord 6 and clasp 7, it is characterized in that: polyethylene landing net 2 is arranged on the bottom of ladder-shaped frame 1, ladder-shaped frame 1 is connected on diesel ship 3 front end decks by irony turning cylinder 4 and swivel becket 5, by polyethylene stay cord 6, be connected with diesel ship 3 both sides, clasp (7) is welded on diesel ship (3).
As depicted in figs. 1 and 2, the high 6m of ladder-shaped frame 1, the long 1.5m of top margin, bottom side length 1.8m, made by wooden frame 1-1, and each is reinforced left and right upper angle by a batten 1-2, is reinforced by a ledger strip 1-3 apart from top margin 2m place.The long 3m of landing net 2, the monolayer polyethylene etting 2-1 that is 2mm by inner diameter of mesh makes, and the bag end is by polyethylene rope slip-knot 2-2 processed closing in, and the square sack of length of side 1.5m is connected on the base and two sides of ladder-shaped frame 1.
As depicted in figs. 1 and 2, the two ends of irony turning cylinder 4 are separately fixed at the centre position of ladder-shaped frame 1 dual-side, by irony swivel becket 5, are connected on the front end deck of diesel ship 3.Polyethylene stay cord 6 connects the irony clasp 7 of ladder-shaped frame 1 dual-side apart from top margin 0.5m place and hull both sides middle position.
In actual mechanical process, when daytime, weather was good, the selected sampled point in reservoir, the utility model is initially located in off working state, and namely stay cord 6 is parallel with motor vessel 3 deck levels by ladder-shaped frame 1 tractive maintenance.While entering duty, at first by turning cylinder 4 and swivel becket 5, stay cord 6 turns to ladder-shaped frame 1 vertical with deck level, and now framework 1 bottom and connected landing net 2 are immersed in water; Start diesel ship 3, under its impetus, water filters from landing net 1 again, and silverfish is intercepted in net a little less than because of the ability of moving about; After one hour, bring to, by stay cord 6, framework 1 is transferred back to parallelly with deck level, landing net 2 surfaces, and a shake bag clothing 2-1, make to net interior silverfish and be concentrated to the landing net end, unties rope slip-knot 2-2 processed, therefrom gets fish, weighs, counts.According to sack area, ship's speed and running time, calculate the discharge that filters landing net, obtain thus silverfish density and biomass in unit bodies ponding.
Claims (4)
1. sampling apparatus of pushing net of investigating reservoir Icefish Resource amount, it comprises ladder-shaped frame (1), polyethylene landing net (2), diesel ship (3), irony turning cylinder (4), swivel becket (5), polyethylene stay cord (6) and clasp (7), it is characterized in that: polyethylene landing net (2) is arranged on the bottom of ladder-shaped frame (1), ladder-shaped frame (1) is connected on diesel ship (3) front end deck by irony turning cylinder (4) and swivel becket (5), by polyethylene stay cord (6), be connected with diesel ship (3) both sides, clasp (7) is welded on diesel ship (3).
2. a kind of sampling apparatus of pushing net of investigating reservoir Icefish Resource amount according to claim 1, it is characterized in that: the high 5.5-6.5m of described ladder-shaped frame (1), the long 1-2m of top margin, bottom side length 1.5-2.3m, by wooden frame (1-1), made, each is reinforced left and right upper angle by a batten (1-2), is reinforced by a ledger strip (1-3) apart from top margin 2m place.
3. a kind of sampling apparatus of pushing net of investigating reservoir Icefish Resource amount according to claim 1, it is characterized in that: the monolayer polyethylene etting that described polyethylene landing net (2) is 1.5-2.5mm by inner diameter of mesh is made, the long 2.5-3.5m of landing net (2), landing net (2) end closes up by polyethylene rope slip-knot processed (2-2), and the square sack of length of side 1.2-1.7m is connected on the base and two sides of ladder-shaped frame (1).
4. a kind of sampling apparatus of pushing net of investigating reservoir Icefish Resource amount according to claim 1, it is characterized in that: the two ends of described irony turning cylinder (4) are separately fixed at ladder-shaped frame (1) dual-side, by irony swivel becket (5), be connected on the front end deck of diesel ship (3), polyethylene stay cord (6) connects the irony clasp (7) of ladder-shaped frame (1) dual-side apart from top edge and hull both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203252791U CN203302181U (en) | 2013-06-06 | 2013-06-06 | Push net sampling device for investigating quantity of whitebait resources in reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203252791U CN203302181U (en) | 2013-06-06 | 2013-06-06 | Push net sampling device for investigating quantity of whitebait resources in reservoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203302181U true CN203302181U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203252791U Expired - Fee Related CN203302181U (en) | 2013-06-06 | 2013-06-06 | Push net sampling device for investigating quantity of whitebait resources in reservoir |
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| CN (1) | CN203302181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110089467A (en) * | 2019-04-28 | 2019-08-06 | 中国科学院水生生物研究所 | A kind of device and method of measurement shrimp crab perception feed ability |
-
2013
- 2013-06-06 CN CN2013203252791U patent/CN203302181U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110089467A (en) * | 2019-04-28 | 2019-08-06 | 中国科学院水生生物研究所 | A kind of device and method of measurement shrimp crab perception feed ability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20150606 |
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| EXPY | Termination of patent right or utility model |