CN112868608A - Multilayer deep water area fishing device for fish resource investigation - Google Patents
Multilayer deep water area fishing device for fish resource investigation Download PDFInfo
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000011835 investigation Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims description 15
- 238000011160 research Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 210000001503 joint Anatomy 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
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- 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
- A01K61/00—Culture of aquatic animals
- A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination
- A01K61/95—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination specially adapted for fish
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- 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
- A01K73/10—Determining the quantity of the catch, e.g. by the pull or drag on the lines
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- 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
- A01K73/12—Nets held vertically in the water, e.g. seines
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Abstract
The invention relates to the technical field of fish resource investigation and fishing, in particular to a multilayer deep water area fishing device for fish resource investigation, which comprises a fixed frame, wherein a plurality of floating boxes are fixedly connected around the outer contour of the fixed frame at equal intervals, a collecting net is arranged below one end of the fixed frame, a counter is bound on the outer side wall of one end of the collecting net, a guide net is fixedly connected on the outer side wall of the collecting net, and openings are formed in two ends of the guide net. According to the invention, the collection net and the guide net are arranged, so that the number of the fish in the sutra can be conveniently counted, the fishing net can be conveniently lifted without fishing due to the arrangement of the fixing ring, the first pull rope, the second pull rope and the floating block, the collection net is matched with the guide net to count the fish, the normal activity of the fish is not influenced, the fishing net is lowered when the fishing is needed, the fishing net is butted with the guide net to collect the fish into the fishing net, the fishing net only needs to be lifted independently when the fishing is started, and the workload of the fishing process is reduced.
Description
Technical Field
The invention relates to the technical field of fish resource investigation and fishing, in particular to a multilayer deep water area fishing device for fish resource investigation.
Background
The fish resources refer to the types and the quantity of fishes with fishery development and utilization values in natural waters, and a reasonable and scientific fishing plan is made by investigating the types and the quantity of the fishes in the water, so that the sustainable utilization and development of the fish resources can be realized.
The trawl or the gill net is usually adopted for fishing in the existing multilayer deep water area, a plurality of persons are required to cooperate when the trawl or the gill net is pulled out, the trawl or the gill net is large, the trawl or the gill net is required to be pulled out completely when fish catch objects are obtained, the trawl or the gill net is troublesome, the workload is large, the trawl or the gill net is not suitable for fixed-point multi-time timed fishing required by fish resource investigation research, and meanwhile, the statistical counting of the fish of the wandering channel.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a multilayer deep water area fishing device for fish resource investigation, which is convenient for counting fishes which pass through the fishing channel by arranging a collecting net and a guide net, is convenient for lifting the fishing net when fishing is not needed by arranging a fixing ring, a first pull rope, a second pull rope and a floating block, is matched with the collecting net and the guide net to count the fishes, does not hinder the normal movement of the fishes, lowers the fishing net when fishing is needed, is butted with the guide net to collect the fishes in the fishing net, and only needs to lift the fishing net alone when fishing, thereby reducing the workload of the fishing process.
The purpose of the invention can be realized by the following technical scheme:
a multilayer deep water area fishing device for fish resource investigation comprises a fixed frame, wherein a plurality of floating boxes are fixedly connected with the periphery of the fixed frame at equal intervals, a collecting net is arranged below one end of the fixed frame, a counter is bound on the outer side wall of one end of the collecting net, a guide net is fixedly connected to the outer side wall of the collecting net, openings are formed in two ends of the guide net, fixing rings are fixedly connected to four vertex angles of one end of the guide net, a second rope twisting frame is installed in the middle of one end of the fixed frame, a first rope twisting frame is installed in the middle of the other end of the fixed frame, pulleys are rotatably connected to two sides of one end of the fixed frame, a lifting rope is fixedly connected to one vertex angle of the other end of the collecting net, and one end of the lifting rope sequentially penetrates through the pulley, the second rope twisting frame and the other pulley and is fixedly connected with the other vertex angle of the other top side of, the collecting net is unfolded underwater through the fixing frame and the lifting rope, the descending depth of the collecting net is controlled, the collecting net gathers fishes and guides the fishes to enter the guiding net from one end of the collecting net, the fishes passing through one end of the collecting net are counted through the counter, the fishes are guided to leave from the direction deviating from the collecting net through the guiding net, and the possibility that the fishes turn around and return to the pond and are counted again is reduced;
one end of the guide net is provided with a fishing net, one end of the fishing net is provided with an opening, two top corners of one end of the fishing net, which are positioned on the top side, are fixedly connected with a second pull rope, two top corners of one end of the fishing net, which are positioned on the bottom side, are fixedly connected with a first pull rope, one ends of the first pull rope and the second pull rope respectively penetrate through fixing rings at corresponding positions, one ends of the first pull rope and the second pull rope, which are positioned close to each other, are fixedly connected with a floating block, the first rope twisting frame is fixedly connected with a first rope, one end of the first rope twisting frame is sleeved with the first rope in a sliding mode after being wound around one end of the fishing net for one circle, the fishing net and the second rope twisting frame are sleeved in a sliding mode, when a fish sample is required to be fished, the first rope twisting frame is rotated to enable the first rope twisting frame to be loosened, the first pull rope and the second pull rope upwards under the buoyancy effect of the floating block, so that, the arrangement of the one-way net piece I and the one-way net piece II enables fishes to be prevented from swimming out after entering the fishing net, the first rope winding frame is rotated to upwards tighten and pull the first rope winding frame, the opening at one end of the fishing net is tightened and closed by the first rope winding frame, the fishing net is pulled to the water surface, fish catches in the fishing net are taken out, and observation and sample collection are facilitated.
Further, the method comprises the following steps: the second rope twisting frame comprises a rope twisting wheel, a fixing rod is fixedly connected to the middle position of the rope twisting wheel, the fixing rod can be wound when the lifting rope penetrates through the second rope twisting frame, so that the screwing-in direction of the lifting rope on the rope twisting wheel is changed, the second rope twisting frame is convenient to rotate, the two ends of the lifting rope are simultaneously contracted or extended, and the depth of a collecting net is convenient to change.
Further, the method comprises the following steps: the inner side wall of one end of the fishing net is fixedly connected with a second unidirectional net piece, and one side, located at the end, deviating from one end of the fishing net, of the second unidirectional net piece, of the inner side wall of one end of the fishing net is fixedly connected with a first unidirectional net piece, so that a labyrinth is formed inside the fishing net, escape of fishes is reduced, and fishing of the fishes is facilitated.
Further, the method comprises the following steps: the unidirectional net piece I and the unidirectional net piece II are horn-shaped, and the thin end openings of the unidirectional net piece I and the unidirectional net piece II are staggered with each other, so that the difficulty of fish swimming out of the fishing net is increased, and the fishing net is convenient to collect the fish.
Further, the method comprises the following steps: a vertex angle of the fixing frame is fixedly connected with a cable rope, one end of the cable rope is fixedly connected with a fixing anchor, and the fixing frame is conveniently fixed at a formulated position.
Further, the method comprises the following steps: the outer contour of one end of the guide net is the same as that of one end of the fishing net, so that one end of the guide net is in butt joint with one end of the fishing net.
Further, the method comprises the following steps: the other end of the fishing net is provided with an opening, the opening at the other end of the fishing net is sleeved with a tightening rope in a sliding mode, when the fishing objects in the fishing net are taken out, the tightening rope is loosened, the opening at the other end of the fishing net is opened, and the fishing objects in the fishing net can be poured out conveniently.
Further, the method comprises the following steps: the bottom edges of the guide net and the collection net are fixedly connected with a plurality of falling blocks, so that the guide net and the collection net can be kept to be unfolded underwater.
The invention has the beneficial effects that:
1. a collecting net is arranged below one end of the fixing frame, a counter is bound on the outer side wall of one end of the collecting net, a second twisted rope frame is arranged in the middle of one end of the fixed frame, pulleys are rotatably connected with both sides of one end of the fixed frame, a lifting rope is fixedly connected with one top side vertex angle of the other end of the collecting net, one end of the lifting rope sequentially passes through the pulley, the second twisted rope frame and the other pulley which are close to the positions and is fixedly connected with the other top side vertex angle of the other end of the collecting net, the collecting net is unfolded underwater through the fixing frame and the lifting rope, meanwhile, the descending depth of the collecting net is controlled, the collecting net gathers and guides the fishes to enter the guide net from one end of the collecting net, and the fishes passing through one end of the collecting net are counted by a counter, the guiding net guides the fishes to leave from the direction deviating from the collecting net, so that the possibility that the fishes turn around and swim back and are counted again is reduced;
2. the two vertex angles of one end of the fishing net, which are positioned on the top side, are fixedly connected with the second pull rope, the two vertex angles of one end of the fishing net, which are positioned on the bottom side, are fixedly connected with the first pull rope, one end of the first pull rope and one end of the second pull rope respectively penetrate through the fixing rings at corresponding positions, the first pull rope and one end of the second pull rope, which are positioned close to each other, are fixedly connected with the floating block, the first rope winding frame is fixedly connected with the first rope winding frame, one end of the rope winding is sleeved with the first rope winding one end of the fishing net in a sliding manner, the fishing net and the rope winding are sleeved in a sliding manner, when a fish needs to be subjected to sample fishing, the first rope winding frame is rotated to release the rope winding, the first pull rope and the second pull rope under the buoyancy of the floating block, so that the four vertex angles at one end of the fishing net are aligned with the four vertex angles at one end of the guide net, the butt joint of the fishing net and the, the first rotary rope twisting frame is upwards tightened to pull the tightening rope, the tightening rope tightens and seals the opening at one end of the fishing net, the fishing net is pulled to the water surface, the fishing objects in the fishing net are taken out, observation and sample collection are facilitated, the fishing net can be independently lifted and fished, and the workload is reduced.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the overall use state of the present invention;
FIG. 3 is a schematic view of a collecting net according to the present invention;
FIG. 4 is a schematic view of the internal structure of the fishing net of the present invention
FIG. 5 is a schematic view of the structure of the fixing frame of the present invention
Fig. 6 is a partially enlarged view of fig. 5 at a.
In the figure: 100. a fixing frame; 110. a pulley; 120. lifting a lifting rope; 130. a first twisted rope frame; 140. a second twisted rope frame; 140a, a rope sheave; 140b, a fixing rod; 150. a buoyancy tank; 200. a fishing net; 210. a unidirectional net sheet I; 220. a second unidirectional mesh; 230. a rope is collected; 240. pulling a first rope; 250. a second pull rope; 260. floating blocks; 300. collecting a net; 310. a counter; 320. a guide net; 321. and (4) fixing the ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a multilayer deep water area fishing device for fish resource investigation comprises a fixing frame 100, a plurality of buoyancy tanks 150 are fixedly connected with the periphery of the outer contour of the fixing frame 100 at equal intervals, a collecting net 300 is arranged below one end of the fixing frame 100, a counter 310 is bound on the outer side wall of one end of the collecting net 300, a guide net 320 is fixedly connected to the outer side wall of the collecting net 300, openings are formed in both ends of the guide net 320, fixing rings 321 are fixedly connected to four vertex angles at one end of the guide net 320, a rope twisting frame II 140 is arranged in the middle of one end of the fixing frame 100, a rope twisting frame I130 is arranged in the middle of the other end of the fixing frame 100, pulleys 110 are rotatably connected to both sides of one end of the fixing frame 100, a lifting rope 120 is fixedly connected to one top vertex angle of the other end of the collecting net 300, and one end of the lifting rope 120 sequentially passes through the pulley 110, the rope twisting frame II 140 and the other pulley 110 which are closely, the collecting net 300 is unfolded underwater through the fixing frame 100 and the lifting rope 120, the descending depth of the collecting net 300 is controlled, the collecting net 300 gathers and guides fishes to enter the guiding net 320 from one end of the collecting net 300, the fishes passing through one end of the collecting net 300 are counted through the counter 310, the fishes are guided to leave from the direction deviating from the collecting net 300 through the guiding net 320, and the possibility that the fishes fall back and are counted again is reduced;
one end of the guide net 320 is provided with a fishing net 200, one end of the fishing net 200 is provided with an opening, two top corners of one end of the fishing net 200, which are positioned on the top side, are fixedly connected with a second pull rope 250, two top corners of one end of the fishing net 200, which are positioned on the bottom side, are fixedly connected with a first pull rope 240, one ends of the first pull rope 240 and the second pull rope 250 respectively penetrate through fixing rings 321 at corresponding positions, one ends of the first pull rope 240 and the second pull rope 250, which are positioned on two adjacent positions, are fixedly connected with floating blocks 260, a first stranding frame 130 is fixedly connected with a second stranding rope 230, one end of the second stranding rope 230 is sleeved with the fishing net 200 in a sliding mode after surrounding one end of the fishing net 200 in a circle, the fishing net 200 and the second stranding rope 230 are sleeved in a sliding mode, when a fish sample is to be fished, the first stranding frame 130 is rotated to enable the second stranding rope 230 to be loosened, the first pull ropes 240 and the second pull ropes 250 upwards under the buoyancy effect of the, therefore, the fishing net 200 is butted with the guide net 320, the first rope twisting frame 130 is rotated to upwards tighten and pull the bundling rope 230, the bundling rope 230 is tightened to tighten and close an opening at one end of the fishing net 200, the fishing net 200 is pulled to the water surface, and the fishing objects in the fishing net 200 are taken out, so that observation and sample collection are facilitated.
The second rope twisting frame 140 comprises a rope twisting wheel 140a, the fixing rod 140b is fixedly connected to the middle position of the rope twisting wheel 140a, when the lifting rope 120 penetrates through the second rope twisting frame 140, the fixing rod 140b can be wound, so that the screwing-in direction of the lifting rope 120 on the rope twisting wheel 140a is changed, the second rope twisting frame 140 can be rotated to enable the two ends of the lifting rope 120 to be contracted or extended simultaneously, the depth of the collecting net 300 can be changed conveniently, the inner side wall of one end of the fishing net 200 is fixedly connected with the second unidirectional net piece 220, the inner side wall of one end of the fishing net 200, which is positioned at one side of the second unidirectional net piece 220, which is far away from one end of the fishing net 200, is fixedly connected with the first unidirectional net 210, so that a labyrinth is formed inside the fishing net 200, the escape of fishes is reduced, the fishes can be conveniently fished, the first unidirectional net 210 and the second unidirectional net piece 220 are horn-shaped, and the thin end openings of the first unidirectional net 210, a cable is fixedly connected to one vertex angle of the fixing frame 100, and a fixing anchor is fixedly connected to one end of the cable, so that the fixing frame 100 is conveniently fixed at a fixed position.
The outer contour of one end of the guide net 320 is the same as that of one end of the fishing net 200, one end of the guide net 320 is in butt joint with one end of the fishing net 200, the other end of the fishing net 200 is provided with an opening, a tightening rope is sleeved at the opening position of the other end of the fishing net 200 in a sliding mode, when the fishing objects in the fishing net 200 are taken out, the tightening rope is loosened, the opening of the other end of the fishing net 200 is opened, the fishing objects in the fishing net 200 are poured out conveniently, the bottom end edges of the guide net 320 and the collecting net 300 are fixedly connected with a plurality of weight blocks, and the guide net 320 and the collecting net 300 are kept unfolded underwater.
The working principle is as follows: when the collecting net 300 is used, the collecting net 300 is arranged below one end of the fixing frame 100, the counter 310 is bound on the outer side wall of one end of the collecting net 300, the guide net 320 is fixedly connected to the outer side wall of the collecting net 300, openings are formed in two ends of the guide net 320, the fixing rings 321 are fixedly connected to four vertex angles of one end of the guide net 320, the rope twisting frame II 140 is installed in the middle of one end of the fixing frame 100, the collecting net 300 is unfolded underwater through the fixing frame 100 and the lifting ropes 120, the descending depth of the collecting net 300 is controlled at the same time, the collecting net 300 gathers fishes and guides the fishes to enter the guide net 320 from one end of the collecting net 300, the fishes passing through one end of the collecting net 300 are counted through the counter 310, the fishes are guided to leave from the direction deviating from the collecting net 300 through the guide net 320, the probability of turning around and counting again is reduced, the two vertex angles located on the top side through one end of the catching net 200 are fixedly connected, and two vertex angles of one end of the fishing net 200, which are positioned at the bottom side, are fixedly connected with a first pull rope 240, one ends of the first pull rope 240 and a second pull rope 250 respectively penetrate through fixing rings 321 at corresponding positions, one ends of the first pull rope 240 and the second pull rope 250, which are positioned adjacent to each other, are fixedly connected with floating blocks 260, a first rope winding frame 130 is fixedly connected with a rope collecting 230, one end of the rope collecting 230 winds around one end of the fishing net 200 and then is in sliding sleeve joint with the fishing net 200, the fishing net 200 and the rope collecting 230 are in sliding sleeve joint, when a fish needs to be subjected to sample fishing, the first rope winding frame 130 is rotated to release the rope collecting 230, the first pull rope 240 and the second pull rope 250 upwards under the buoyancy effect of the floating blocks 260, so that four vertex angles at one end of the fishing net 200 are aligned with four vertex angles at one end of the guide net 320, the fishing net 200 and the guide net 320 are butted, and the fish cannot swim out after entering the fishing net 200 through the arrangement of the, the first rope twisting frame 130 is rotated to upwards tighten and pull the first rope tightening frame 230, the first rope tightening frame 230 tightens and seals an opening at one end of the fishing net 200, the fishing net 200 is pulled to the water surface, the fishing objects in the fishing net 200 are taken out, observation and sample collection are facilitated, the fishing net 200 can be lifted and fished independently, the fishing net 200 is lifted conveniently when fishing is not needed, the collecting net 300 is matched with the guide net 320 to count fishes, normal activities of the fishes are not hindered, the fishing net 200 is lowered when fishing is needed, the fishing net 200 is butted with the guide net 320 to collect the fishes in the fishing net 200, the fishing net 200 is lifted only needed when fishing, and the workload is reduced.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (8)
1. The multilayer deep water area fishing device for fish resource investigation comprises a fixed frame (100) and is characterized in that a plurality of floating boxes (150) are fixedly connected with the periphery of the outer contour of the fixed frame (100) at equal intervals, a collecting net (300) is arranged below one end of the fixed frame (100), a counter (310) is bound on the outer side wall of one end of the collecting net (300), a guide net (320) is fixedly connected to the outer side wall of the collecting net (300), openings are formed in the two ends of the guide net (320), fixing rings (321) are fixedly connected to the four vertex angle positions of one end of the guide net (320), a rope twisting frame II (140) is installed in the middle position of one end of the fixed frame (100), a rope twisting frame I (130) is installed in the middle position of the other end of the fixed frame (100), pulleys (110) are rotatably connected to the two sides of one end of the fixed frame (100), a lifting rope (120) is fixedly connected to the vertex angle of the top side of the, one end of the lifting rope (120) sequentially passes through the pulley (110), the second rope twisting frame (140) and the other pulley (110) at the adjacent position and is fixedly connected with the other top side corner of the other end of the collecting net (300);
one end of the guide net (320) is provided with a fishing net (200), one end of the fishing net (200) is provided with an opening, two top corners of one end of the fishing net (200) on the top side are fixedly connected with a second pull rope (250), two top corners of one end of the fishing net (200) on the bottom side are fixedly connected with a first pull rope (240), one ends of the first pull rope (240) and the second pull rope (250) penetrate through fixing rings (321) in corresponding positions respectively, one ends of the first pull rope (240) and the second pull rope (250) which are adjacent to each other are fixedly connected with a floating block (260), a bundling rope (230) is fixedly connected onto a first twisted rope frame (130), one end of the bundling rope (230) is sleeved with the fishing net (200) in a sliding mode after one end of the fishing net (200) is in a circle, and the fishing net (200) is sleeved with the bundling rope (230) in a sliding mode.
2. The multi-story deep water fishing device for fish resource research of claim 1, wherein the second rope winding frame (140) comprises a rope winding wheel (140a), and a fixing rod (140b) is fixed to the middle of the rope winding wheel (140 a).
3. The multilayer deep water fishing device for fish resource investigation of claim 1, wherein a second unidirectional mesh (220) is fixedly connected to the inner side wall of one end of the fishing net (200), and a first unidirectional mesh (210) is fixedly connected to the inner side wall of one end of the fishing net (200) which is located at the side of the second unidirectional mesh (220) away from the end of the fishing net (200).
4. The multi-layered deep water fishing device for fish resource research according to claim 3, wherein the first unidirectional mesh (210) and the second unidirectional mesh (220) are trumpet-shaped, and the thin end openings of the first unidirectional mesh (210) and the second unidirectional mesh (220) are staggered.
5. The multi-story deep water area fishing device for fish resource research of claim 1, wherein a cable is attached to a top corner of the fixing frame (100), and a fixing anchor is attached to one end of the cable.
6. The multi-layered deep water fishing device for fish resource research of claim 1, wherein an outer contour of one end of the guiding net (320) is identical to an outer contour of one end of the fishing net (200).
7. The multilayer deep water fishing device for fish resource investigation of claim 1, wherein the other end of the fishing net (200) is provided with an opening, and a tightening rope is slidably sleeved at the opening position of the other end of the fishing net (200).
8. The multi-story deep water fishing device for fish resource research of claim 1, wherein a plurality of weights are attached to the bottom edges of the guiding net (320) and the collecting net (300).
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| CN202110037601.XA CN112868608B (en) | 2021-01-12 | 2021-01-12 | Multilayer deep water area fishing device for fish resource investigation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114271242A (en) * | 2021-12-24 | 2022-04-05 | 费香东 | Fishing corbicula fluminea drag harrow net device and application method thereof |
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| CN202760026U (en) * | 2012-07-31 | 2013-03-06 | 中国科学院水生生物研究所 | Purse seine sampling device for surveying of bait fish resources in shallow lakes |
| CN205106021U (en) * | 2015-09-02 | 2016-03-30 | 中国水产科学研究院珠江水产研究所 | Rivers roe, young afvanced fry ration collection system |
| CN106719487A (en) * | 2016-12-16 | 2017-05-31 | 江苏天时利和水产养殖高新技术有限公司 | Small dimension biological collector under a kind of remote-controlled water |
| CN208590450U (en) * | 2018-07-25 | 2019-03-12 | 义乌工商职业技术学院 | Farm's automatic fishing device |
| CN208863388U (en) * | 2018-09-14 | 2019-05-17 | 浙江省淡水水产研究所 | A kind of drift fish-egg, larva and juvenile investigate netting gear |
| CN211607929U (en) * | 2020-02-08 | 2020-10-02 | 张凯民 | Fishing net |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114271242A (en) * | 2021-12-24 | 2022-04-05 | 费香东 | Fishing corbicula fluminea drag harrow net device and application method thereof |
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