CN111466348A - Bottom line pressing device for pond trawl - Google Patents
Bottom line pressing device for pond trawl Download PDFInfo
- Publication number
- CN111466348A CN111466348A CN202010326069.9A CN202010326069A CN111466348A CN 111466348 A CN111466348 A CN 111466348A CN 202010326069 A CN202010326069 A CN 202010326069A CN 111466348 A CN111466348 A CN 111466348A
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- line
- rod
- pond
- trawl
- rope
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- 238000003825 pressing Methods 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 230000002421 anti-septic effect Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 241000251468 Actinopterygii Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Classifications
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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
- A01K73/04—Devices for spreading or positioning, e.g. control thereof
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Revetment (AREA)
Abstract
The invention relates to a device for pressing an outline of a pond trawl, which comprises an outline pressing plate, wherein the side surface of the outline pressing plate is fixedly connected with an outline; the head line pressing plate is vertically connected and fixed with the fixed rod, the weight pressing block is sleeved on the fixed rod through an inner opening, the fixed rod is movably connected with the connecting sleeve rod in the axial direction, the upper end of the connecting sleeve rod is connected with the floating ball frame through a short connecting rope, the upper end of the floating ball frame is movably connected with the supporting sleeve rod in the axial direction, the upper end of the supporting sleeve rod is fixedly connected with the head line supporting plate, and the head line supporting plate is fixedly connected with the head line. The foot line pressing device can replace workers to step on foot lines in the process of trawl fishing of the pond, keeps the foot lines tightly attached to the bottom of the pond, reduces labor intensity while ensuring fishing efficiency, and solves the problem of shortage of labor.
Description
Technical Field
The invention relates to a pond culture trawl fishing auxiliary device, in particular to a pond trawl foot line pressing device, and belongs to the technical field of aquaculture.
Background
The fishing in the pond generally adopts a trawl fishing mode, the fishing net is discharged from one side of the pond, the headrope floats on the water surface by virtue of a floater, the footrope is sunk at the bottom of the pond, two groups of trawl workers respectively drag the fishing net from the left side and the right side, move forwards along the bank of the pond, lift the net after arriving at the other side of the pond, enclose the fish in the net, and then fish to the shore, as shown in figure 1. According to the conditions of pond area, water depth, fish storage amount and the like, 8-12 persons are usually needed during trawling operation, and the trawling operation is divided into two groups which are respectively responsible for net pulling on two sides of the fishing net. Each group of workers needs 1 person to step on the foot line at a shallow water position near the shore. The foot-treading foot line is used for ensuring that the fishing net foot line is tightly attached to the bottom of the pond and preventing fishes from escaping from a gap between the foot line and the bottom of the pond. The foot trample person steps on the fishing net foot line by one foot and cooperates with the onshore workers to move forward, as shown in figure 2. Due to the seasonal nature of the culture, most pond fishing operations are performed in winter, and the water temperature is very low. In the trawl fishing process, the foot treading person needs to wear a thick waterproof coat to walk, and the two legs are soaked in cold water for a long time and are very bitter. Meanwhile, as the existing cultivation workers age, the bitter workers gradually have artificial shortage, and normal cultivation production is affected.
Disclosure of Invention
The invention aims to provide a device for pressing a foot line of a trawl of a pond, which realizes automatic foot line pressing in the trawl process through a reasonable mechanical structure, ensures that the foot line of a fishing net is tightly attached to the bottom of the pond, and thus replaces manual foot line pressing.
The invention adopts the following technical scheme:
a device for pressing an outline of a pond trawl comprises an outline pressing plate 4, wherein the side surface of the outline pressing plate 4 is fixedly connected with an outline 1; the head line pressing plate 4 is vertically connected and fixed with the fixing rod 6, the weight block 5 is sleeved on the fixing rod 6 through an inner hole, the fixing rod 6 is movably connected with the connecting sleeve rod 7 in the axial direction, the upper end of the connecting sleeve rod 7 is connected with the floating ball frame 10 through the connecting short rope 8, the upper end of the floating ball frame 10 is movably connected with the supporting sleeve rod 11 in the axial direction, the upper end of the supporting sleeve rod 11 is fixedly connected with the head line supporting plate 12, and the head line supporting plate 12 is fixedly connected with the head line 2.
Preferably, the pool trawl bottom line pressing device is divided into an underwater part and an above-water part which are mutually connected through the connecting short rope 8; the connecting short rope 8 is one of a flexible steel wire rope, a nylon rope and a chain; the underwater part comprises the head line pressing plate 4, a weight block 5, a fixed rod 6 and a connecting sleeve rod 7; the water part comprises a floating ball 9, a floating ball frame 10, a supporting sleeve rod 11 and a supporting plate 12.
Preferably, the edges of two sides of the line pressing plate 4 are provided with a plurality of connecting holes 4-1, and a section of the base line 1 close to the shore is fixed at the lowest part of the connecting hole on one side of the line pressing plate through a string or a binding belt; the foot line pressing plate 4 presses the foot line to be attached to the bottom of the pond, and a gap between the foot line and the bottom of the pond is prevented.
Preferably, the fixing rod 6 is arranged in the middle of the lacing wire pressing plate in the vertical direction; the weight blocks 5 can be overlapped, and the number of the weight blocks can be increased or reduced according to actual needs; the shape of the opening of the weight 5 is the same as the shape of the cross section of the fixing rod 6, and the fixing rod is directly sleeved into the opening of the weight 5 for fixing; the cross section shapes of the weight opening and the fixed rod are one of square, oval and oblate, so that the long edge of the installed weight is parallel to the long edge of the steel wire pressing plate, and the weight opening and the fixed rod cannot rotate left and right.
Preferably, the connecting sleeve 7 is hollow, the cross section of the inner cavity of the connecting sleeve is the same as that of the fixed rod, and the connecting sleeve can be directly sleeved on the fixed rod; the fixed rod and the connecting sleeve rod are both provided with a plurality of pin inserting holes 7-1 for positioning.
Furthermore, the upper part of the connecting sleeve rod is provided with a rope tying hole 7-2 for threading a rope to be connected with the water part.
Preferably, a plurality of floating balls 9 are fixedly installed around the floating ball frame 10, the floating balls 9 are hollow sealed spheres, and the tail ends of three beams of the floating ball frame are respectively connected with the three floating balls to form a whole floating on the water surface.
Furthermore, rope tying rods 10-1 are vertically and downwards arranged in the middle of the three cross beams of the floating ball frame, and meanwhile, supporting rods 10-2 are vertically and upwards arranged in the middle of the three cross beams of the floating ball frame; the bottom end of the rope tying rod 10-1 is provided with a through hole, and the connecting short rope 8 penetrates through the through hole to be connected. The other end of the connecting short rope passes through a rope tying hole at the upper part of the connecting sleeve rod 7 to connect the rope tying rod 10-1 and the connecting sleeve rod 7.
Furthermore, a plurality of pin inserting holes 11-1 are formed in the supporting sleeve rod 11 and the supporting rod 10-2; the supporting sleeve rod 11 can move up and down along the supporting rod 10-2 to adjust the height, thereby being suitable for the height of the head line.
Furthermore, the net pressing plate 4, the fixing rod 6 and the connecting loop bar 7 are made of metal materials which are subjected to antiseptic treatment. The weight 5 is made of metal or concrete; the floating ball 9, the floating ball frame 10, the rope tying rod 10-1, the support rod 10-2, the support sleeve rod 11 and the head line support plate 12 are all made of plastic materials.
Preferably, the two side edges of the supporting plate 12 of the headrope are provided with a plurality of connecting holes 12-1, and one section of the headrope 2 is fixed on the connecting hole at one side of the supporting plate 12 of the headrope through a string or a binding belt.
Above-mentioned pond trawl presses foot line device, during trawl operation: the upper line and the bottom line move synchronously along with the steel drawing rope; the underwater part presses the base line and moves synchronously with the base line, and the water part moves synchronously with the base line; the underwater part presses the bottom line by gravity, and the water part provides buoyancy. Because the headrope is a flexible rope, certain drifting and deflection exist when the water part moves, but the headrope also keeps certain tension due to the tension transmitted by the steel rope, so the drifting and deflection amplitude is not too large. Because the above-water part and the underwater part are connected through the flexible connecting short rope, the slight drift and deflection of the above-water part cannot influence the line pressing effect of the underwater part. When the underwater part inclines due to external force such as water flow and the like, the connecting loop bar is connected with the above-water part through the short rope, so that the underwater part cannot completely topple over, and a stable steel line pressing state is ensured.
The invention has the beneficial effects that:
1) the foot line pressing device can replace workers to step on foot lines in the pond trawl fishing operation process, the foot lines are kept to be tightly attached to the bottom of the pond, the fishing efficiency is guaranteed, the labor intensity is reduced, and the problem of shortage of workers is solved.
2) The device simple structure, simple to operate can drop into operation fast.
3) Because the headrope is a flexible rope, certain drifting and deflection exist when the water part moves, but the headrope also keeps certain tension due to the tension transmitted by the steel rope, so the drifting and deflection amplitude is not too large. Because the above-water part and the underwater part are connected through the flexible connecting short rope, the slight drift and deflection of the above-water part cannot influence the line pressing effect of the underwater part. When the underwater part inclines due to external force such as water flow and the like, the connecting loop bar is connected with the above-water part through the short rope, so that the underwater part cannot completely topple, and a stable steel line pressing state is ensured; the design is more ingenious.
Drawings
Fig. 1 is a top view of a prior art pond trawl operation.
Fig. 2 is a side view of a prior art pond trawl operation.
Fig. 3 is an overall schematic diagram of the pond trawl foot line pressing device.
Fig. 4 is a schematic structural view of the underwater part of the device for pressing the bottom line of the trawl of the pond.
Fig. 5 is a schematic structural diagram of the water part of the pool trawl line pressing device.
In the figure, 1-bottom line, 2-top line, 3-net piece, 4-bottom line plate, 5-weight block, 6-fixed rod, 7-connecting loop bar, 8-connecting short rope, 9-floating ball, 10-floating ball frame, 11-supporting loop bar, 12-top line supporting plate, 13-netting rope, 14-float, 15-stepping line position, 16-pond bank, 17-water surface, 7-1-bolt hole, 7-2-rope tying hole and 12-1-top line connecting hole.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 3, the device for pressing the foot line is divided into an underwater portion and an above-water portion, which are coupled to each other by a connecting stub 8. The connecting short rope can be made of flexible steel wire ropes, nylon ropes and the like, and can also be a chain.
Referring to fig. 3-4, the underwater part is composed of a head line pressing plate 4, a weight block 5, a fixing rod 6 and a connecting sleeve rod 7.
Referring to fig. 3 and 5, the water part consists of three floating balls 9, a floating ball frame 10, a support sleeve rod 11 and a support plate 12.
Referring to fig. 4, the edges of two sides of the lacing line pressing plate 4 are provided with a plurality of connecting holes 4-1, and a section of the base line 1 close to the shore is fixed at the bottom of the connecting hole on one side of the lacing line pressing plate through a string or a binding belt. The foot line pressing plate presses the foot line to be attached to the bottom of the pond, and a gap between the foot line and the bottom of the pond is prevented.
Referring to fig. 4, a fixing rod 6 is vertically arranged in the middle of the lacing wire pressing plate. The weight 5 is used for increasing the weight of the press line, and the number of the weight can be increased or decreased according to actual needs. The shape of the opening of the weight 5 is the same as the shape of the cross section of the fixed rod 6, so that the weight can be fixed by directly sleeving the weight on the fixed rod, and the weight is convenient to install. Because the cross section shapes of the opening of the weight block and the fixed rod are oblate, the long edge of the installed weight block is parallel to the long edge of the steel wire pressing plate, and the weight block cannot rotate left and right. The shapes of the opening of the weight and the cross section of the fixing rod can also be non-perfect circles such as square, oval and the like, so long as the weight is prevented from rotating.
With continued reference to fig. 4, the connecting sleeve 7 is hollow, and the cross section of its inner cavity is the same as that of the fixing rod, and can be directly sleeved on the fixing rod. The fixed rod and the connecting sleeve rod are both provided with a plurality of pin inserting holes 7-1. The connecting sleeve rod can move up and down along the fixed rod, and when a pin inserting hole in the connecting sleeve rod is aligned with a pin inserting hole in the fixed rod, the pin inserting hole is inserted, so that the connecting sleeve rod can be fixedly connected. When in use, the height of the connecting loop bar is adjusted according to the water depth condition, and the connecting loop bar is fixed by using the inserted pin. The upper part of the connecting sleeve rod is provided with a rope tying hole 7-2 for threading a rope to be connected with the water part.
The head line pressing plate 4, the fixed rod 6 and the connecting loop bar 7 are all made of metal materials, and the materials are subjected to antiseptic treatment. The weight 5 may be made of metal or concrete.
Referring to fig. 5, the floating ball 9 is a hollow sealed ball, and the tail ends of the three beams of the floating ball frame are respectively connected with the three floating balls to form a whole floating on the water surface.
Referring to fig. 5, the middle positions of the three beams of the floating ball frame are vertically downwards provided with rope tying rods 10-1, and the positions are vertically upwards provided with supporting rods 10-2.
Referring to fig. 5, the bottom end of the rope tying rod 10-1 is provided with a through hole through which the connecting short rope 8 passes for connection. The other end of the connecting short rope passes through the rope tying hole at the upper part of the connecting sleeve rod to connect the rope tying rod and the connecting sleeve rod.
With continued reference to FIG. 5, the support sleeve 11 and the support rod 10-2 are provided with a plurality of pin holes 11-1. The supporting sleeve rod can move up and down along the supporting rod to adjust the height, so that the height of the head line is adapted. When the pin holes are aligned, the support sleeve rod can be fixed on the support rod by inserting the pins.
Referring to fig. 5, the support plate 12 is coupled to the top of the support stem 11. The edges of the two sides of the supporting plate 12 are provided with a plurality of connecting holes 12-1. One section of the head line 2 is fixed on the connecting hole at one side of the supporting plate through a string or a ribbon.
The floating ball 9, the floating ball frame 10, the rope tying rod 10-1, the support rod 10-2, the support sleeve rod 11 and the support plate 12 are all made of plastic materials.
When trawling, the head line and the bottom line move synchronously along with the steel rope. The underwater part of the device presses the base line and moves synchronously with the base line, and the water part moves synchronously with the base line. Because the headrope is a flexible rope, certain drifting and deflection exist when the water part moves, but the headrope also keeps certain tension due to the tension transmitted by the steel rope, so the drifting and deflection amplitude is not too large. Because the above-water part and the underwater part are connected through the flexible connecting short rope, the slight drift and deflection of the above-water part cannot influence the line pressing effect of the underwater part.
The underwater part presses the bottom line by gravity, and the water part provides buoyancy. When the underwater part inclines due to external force such as water flow and the like, the connecting loop bar is connected with the above-water part through the short rope, so that the underwater part cannot completely topple over, and a stable steel line pressing state is ensured.
While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. The utility model provides a pond trawl presses end device which characterized in that: the steel line pressing plate comprises a steel line pressing plate (4), wherein the side surface of the steel line pressing plate (4) is fixedly connected with a base line (1); the steel line pressing plate (4) is perpendicularly connected and fixed with the fixing rod (6), the weight pressing block (5) is sleeved on the fixing rod (6) through an inner hole, the fixing rod (6) is movably connected with the connecting sleeve rod (7) in the axial direction, the upper end of the connecting sleeve rod (7) is connected with the floating ball frame (10) through the connecting short rope (8), the upper end of the floating ball frame (10) is movably connected with the supporting sleeve rod (11) in the axial direction, the upper end of the supporting sleeve rod (11) is fixedly connected with the upper steel line supporting plate (12), and the upper steel line supporting plate (12) is fixedly connected with the upper steel line (2).
2. The pond trawl line presser of claim 1, wherein: the pool trawl bottom line pressing device is divided into an underwater part and an above-water part which are mutually connected through the connecting short rope (8); the connecting short rope (8) is one of a flexible steel wire rope, a nylon rope and a chain; the underwater part comprises the head line pressing plate (4), a weight block (5), a fixed rod (6) and a connecting sleeve rod (7); the water part comprises a floating ball (9), a floating ball frame (10), a supporting sleeve rod (11) and a supporting plate (12).
3. The pond trawl line presser of claim 1, wherein: the edges of two sides of the line pressing plate (4) are provided with a plurality of connecting holes (4-1), and a section of the base line (1) close to the shore is fixed at the lowest part of the connecting hole on one side of the line pressing plate through a string or a binding belt; the foot line pressing plate (4) presses the foot line to be attached to the bottom of the pond, and a gap between the foot line and the bottom of the pond is prevented.
4. The pond trawl line presser of claim 1, wherein: the fixing rod (6) is arranged in the middle of the lacing wire pressing plate in the vertical direction; the weight blocks (5) can be overlapped, and the number of the weight blocks can be increased or reduced according to actual needs; the shape of the opening of the weight block (5) is the same as the shape of the cross section of the fixing rod (6), and the fixing rod is directly sleeved in the opening of the weight block (5) for fixing; the cross section shapes of the weight opening and the fixed rod are one of square, oval and oblate, so that the long edge of the installed weight is parallel to the long edge of the steel wire pressing plate, and the weight opening and the fixed rod cannot rotate left and right.
5. The pond trawl line presser of claim 1, wherein: the connecting loop bar (7) is hollow, the cross section of the inner cavity of the connecting loop bar is the same as that of the fixed bar, and the connecting loop bar can be directly sleeved on the fixed bar; the fixed rod and the connecting sleeve rod are both provided with a plurality of pin inserting holes (7-1) for positioning.
6. The pond trawl sill line device of claim 2, wherein: the upper part of the connecting loop bar is provided with a rope tying hole (7-2) for threading a rope to be connected with the water part.
7. The pond trawl line presser of claim 1, wherein: a plurality of floating balls (9) are fixedly installed on the periphery of the floating ball frame (10), the floating balls (9) are hollow sealed spheres, and the tail ends of three beams of the floating ball frame are respectively connected with the three floating balls to form a whole floating on the water surface.
8. The pond trawl sill line device of claim 7, wherein: rope tying rods (10-1) are vertically arranged downwards in the middle of the three cross beams of the floating ball frame, and meanwhile, supporting rods (10-2) are vertically arranged upwards in the middle of the three cross beams of the floating ball frame; the bottom end of the rope tying rod (10-1) is provided with a through hole, and the connecting short rope (8) penetrates through the through hole to be connected. The other end of the short connecting rope passes through a rope tying hole at the upper part of the connecting loop bar (7) to connect the rope tying bar (10-1) and the connecting loop bar (7).
9. The pond trawl sill line device of claim 8, wherein: a plurality of pin inserting holes (11-1) are formed in the supporting sleeve rod (11) and the supporting rod (10-2); the supporting sleeve rod (11) can move up and down along the supporting rod (10-2) to adjust the height, thereby being suitable for the height of the head line.
10. The pond trawl sill line device of claim 8, wherein: the line pressing plate (4), the fixing rod (6) and the connecting loop rod (7) are all made of metal materials which are subjected to antiseptic treatment. The weight (5) is made of metal or concrete; the floating ball (9), the floating ball frame (10), the tether rod (10-1), the support rod (10-2), the support sleeve rod (11) and the head line support plate (12) are all made of plastic materials.
11. The pond trawl line presser of claim 1, wherein: the edges of two sides of the head line supporting plate (12) are provided with a plurality of connecting holes (12-1), and one section of the head line (2) is fixed on the connecting hole at one side of the head line supporting plate (12) through a string or a binding belt.
12. A pond trawl sill line assembly according to any one of claims 1 to 11, wherein during trawl operation:
the upper line and the bottom line move synchronously along with the steel drawing rope; the underwater part presses the base line and moves synchronously with the base line, and the water part moves synchronously with the base line;
the underwater part presses the bottom line by gravity, and the water part provides buoyancy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010326069.9A CN111466348B (en) | 2020-04-23 | 2020-04-23 | Bottom line pressing device for pond trawl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010326069.9A CN111466348B (en) | 2020-04-23 | 2020-04-23 | Bottom line pressing device for pond trawl |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111466348A true CN111466348A (en) | 2020-07-31 |
| CN111466348B CN111466348B (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010326069.9A Active CN111466348B (en) | 2020-04-23 | 2020-04-23 | Bottom line pressing device for pond trawl |
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| Country | Link |
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| CN (1) | CN111466348B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090282723A1 (en) * | 2006-08-31 | 2009-11-19 | National University Corporation Tokyo University Of Marine Science And Technology | Trawl net layer-by-layer collecting device |
| CN101647416A (en) * | 2009-09-08 | 2010-02-17 | 中国水产科学研究院淡水渔业研究中心 | Method for net fishing, transporting and temporarily culturing coilia ectenes parent fish in pool |
| CN103392678A (en) * | 2013-08-26 | 2013-11-20 | 中国水产科学研究院黄海水产研究所 | Novel Spanish mackerel drift net fishing gear and assembly method thereof |
| CN104304200A (en) * | 2014-09-23 | 2015-01-28 | 浙江海洋学院 | Flexible net expanding device |
| CN204670181U (en) * | 2015-04-22 | 2015-09-30 | 广东海洋大学 | A kind of novel trawlnet ground rope |
| CN105076014A (en) * | 2014-05-18 | 2015-11-25 | 徐州一统渔具有限公司 | Net device for trapping onychostoma sima in rivers and lakes |
| CN105900947A (en) * | 2016-06-13 | 2016-08-31 | 中国水产科学研究院东海水产研究所 | Lead-coated rope type ground rope for Antarctic krill trawl |
| CN206808472U (en) * | 2017-06-23 | 2017-12-29 | 冷树东 | A kind of netting gear |
-
2020
- 2020-04-23 CN CN202010326069.9A patent/CN111466348B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090282723A1 (en) * | 2006-08-31 | 2009-11-19 | National University Corporation Tokyo University Of Marine Science And Technology | Trawl net layer-by-layer collecting device |
| CN101647416A (en) * | 2009-09-08 | 2010-02-17 | 中国水产科学研究院淡水渔业研究中心 | Method for net fishing, transporting and temporarily culturing coilia ectenes parent fish in pool |
| CN103392678A (en) * | 2013-08-26 | 2013-11-20 | 中国水产科学研究院黄海水产研究所 | Novel Spanish mackerel drift net fishing gear and assembly method thereof |
| CN105076014A (en) * | 2014-05-18 | 2015-11-25 | 徐州一统渔具有限公司 | Net device for trapping onychostoma sima in rivers and lakes |
| CN104304200A (en) * | 2014-09-23 | 2015-01-28 | 浙江海洋学院 | Flexible net expanding device |
| CN204670181U (en) * | 2015-04-22 | 2015-09-30 | 广东海洋大学 | A kind of novel trawlnet ground rope |
| CN105900947A (en) * | 2016-06-13 | 2016-08-31 | 中国水产科学研究院东海水产研究所 | Lead-coated rope type ground rope for Antarctic krill trawl |
| CN206808472U (en) * | 2017-06-23 | 2017-12-29 | 冷树东 | A kind of netting gear |
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| Publication number | Publication date |
|---|---|
| CN111466348B (en) | 2021-09-17 |
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