CN109463358A - A kind of friendly otter-trawl - Google Patents
A kind of friendly otter-trawl Download PDFInfo
- Publication number
- CN109463358A CN109463358A CN201811425557.4A CN201811425557A CN109463358A CN 109463358 A CN109463358 A CN 109463358A CN 201811425557 A CN201811425557 A CN 201811425557A CN 109463358 A CN109463358 A CN 109463358A
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- Prior art keywords
- etting
- otter
- friendly
- trawl
- connection
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 241000251468 Actinopterygii Species 0.000 claims description 19
- 241000219422 Urtica Species 0.000 claims description 14
- 235000009108 Urtica dioica Nutrition 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 208000001581 lymphogranuloma venereum Diseases 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 238000009736 wetting Methods 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 9
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 238000007726 management method Methods 0.000 description 15
- 230000004992 fission Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000003643 water by type Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 241000238557 Decapoda Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000366 juvenile effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 241001139305 Channa asiatica Species 0.000 description 1
- 241001596816 Halieutaea stellata Species 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- FYHXNYLLNIKZMR-UHFFFAOYSA-N calcium;carbonic acid Chemical class [Ca].OC(O)=O FYHXNYLLNIKZMR-UHFFFAOYSA-N 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The present invention provides a kind of friendly otter-trawl, belong to fishing net's technical field, including the etting for fishing, the end of etting is equipped with fixed ring, etting is connected by fixed ring and pulls frame, several detachable floating balls are equipped at the network interface of etting, the two sides of etting are connected with sinker, and the lower section of etting connects network management.Otter-trawl of the invention can improve the safety of netting gear and improve the wind and wave resistance fluidity energy of ocean trawlnet, and fished class injury is few, have no effect to sea bed.
Description
Technical field
The invention belongs to fishing net's technical fields, and in particular to a kind of friendly otter-trawl.
Background technique
The important operation mode of one of trawl fishing China fish production, trawl fishing operating area is big, and catch is big,
Therefore collected among a net in the marine organisms of trawlnet crossed sea area capture regardless of type, size, receipts needed after netting by fishery harvesting into
Row sorts, classification storage, this process needs to spend a large amount of artificial and working hours, will increase operating cost, drags in slow fishery harvesting circulation
City's rhythm, influences income.
Traditional beam trawlnet is mainly used for fishing and inhabites the life of the oceans such as the fish in coastal waters bottom, Shrimp waste and shellfish
Object, operating water depth are generally less than 20m.Due to inhabiting a large amount of juvenile fish and juvenile prawn, traditional boom in offshore sea waters
The catches specification of trawlnet capture is smaller, and economic value is lower, but destroys caused by fishery resources larger.In operation
Cheng Dangzhong, height of net opening are limited by towing speed, if towing speed is excessively high, traditional beam trawlnet can aweigh, and towing speed is too low,
Boom can contact seabed, and network interface is difficult to open, and defy capture catches in both cases.Simultaneously because traditional boom
The ground rope of trawlnet is iron chains, therefore can cause serious destruction to sea bed during towing.
Summary of the invention
The purpose of the present invention is to provide it is a kind of improve netting gear safety and improve ocean trawlnet wind and wave resistance fluidity energy,
Fished class injury is few, the friendly otter-trawl having no effect to sea bed.
The scheme that the present invention is taken to achieve the above object are as follows: a kind of friendly otter-trawl, including the net for fishing
Clothing, the end of etting are equipped with fixed ring, and etting is connected by fixed ring pulls frame, are equipped at the network interface of etting several detachable
Floating ball, the two sides of etting are connected with sinker, and the lower section of etting connects network management.When fishing boat is advanced, pulls and pull frame, it can be the bottom of by
Trawlnet struts, and fish enter from the network interface of etting, and network interface is equipped with multiple detachable floating balls, can change the buoyancy of etting,
Different waters and depth make adjustment appropriate, are conducive to catch, the sinkers of etting two sides can fast etting subsidence velocity, cooperation
Float with guarantee etting in water needed for shape and position, the trawlnet utilize network management spray water column, have to sea bed enough
Impact force makes have a certain distance between trawlnet and sea bed, will not damage to sea bed, and in fishing operations, is caught
Fish are difficult to escape, small to the injury of fish, while also improving the fishing efficiency of otter-trawl.
Preferably, the water inlet end of network management connects water inlet pipe, water inlet pipe middle section connection water inlet supervisor, water inlet supervisor connects
External supply equipment is connect, is in hollow form inside network management, and the lower surface of network management is equipped with hole for water spraying, hole for water spraying every 10cm-15cm
Front is obliquely installed obliquely, and the diameter of hole for water spraying is 5mm-8mm.The network management is supplied water by outside, is pacified under the spacing of setting
Dress hole for water spraying can guarantee that enough water columns impact sea bed, in trawlnet dragging process using shower make trawlnet with
Sea bed keeps certain distance, and destruction of the bottom line to seabed during towing can be effectively prevented, and the water column ejected can play biography
The effect of bottom line agitation substrate, makes the biology for being sunken to seabed float upwards under the impact of water column in system otter-trawl.
Preferably, pulling the net bow that frame includes the left and right sides, connection support bar between bow is netted, is connected on support rod horizontal
To the barrier item of setting, support rod middle section connects arcuate bracket by reinforcing rib, and net bow bottom connects network interface bracket, network interface bracket
Four angles connection etting on fixed ring.Pulling frame ensure that the stability of whole device in the process of running, have preferably
Wind and wave resistance stream ability, especially at the area depth of water Liu great and high sea, operation can more show the reliability of its underwater posture
And catching rate, the consumption of activity duration and the energy was not only saved, but also reduce the life security risk during operation, etting four
A angle connection network interface bracket can make etting be not in turn over net in fishing, and the setting for obstructing item obstructs some ocean rubbish, keeps away
Exempt from unnecessary sundries to block into hopper, reduces catching rate.
Preferably, detachable floating ball includes centralized positioning seat, it is equipped with central cavity in the middle part of centralized positioning seat, center is fixed
The edge of position seat is equidistantly equipped with 5-6 corresponding mounting grooves, and the two sides of mounting groove are flexibly connected roller, are connected with pressure on roller
Plate is connected with float fission in mounting groove.Float fission is assemblied to form with centralized positioning seat, is respectively arranged between float fission
Independent hollow cavity, even if there is damaged and corresponding float failure, other do not occur damaged float fission still can
It reuses, the clamping of float fission one end squeezes installation with formation in mounting groove, while seperated by the fixed float of pressing plate, guarantees to make
The case where with being in the process not in centralized positioning seat and the separation of float fission, it is ensured that floating ball being capable of normal use.
It is equipped with inside etting preferably, stating into hopper, is equipped with bracing ring into hopper side, lateral connection point in the middle part of etting
Filter, etting end, which is connected with, takes lymphogranuloma inguinale.Fish can be collected into hopper to etting, bracing ring plays support to etting and makees
With, deformation is prevented, it the phenomenon that etting is divided into upper layer and lower layer, fish is made to be not in serious accumulation by filter, will after fishing
Fish is poured out from taking in lymphogranuloma inguinale.
Preferably, including positioning ring into hopper, positioning ring inner loop is furnished with inclination connection strap, tilts in connection strap connection
Circle, inner ring inside connect adhesive tape.It on the one hand is capable of fixing etting into the positioning ring inside hopper, on the other hand fish can be made from the entrance
Adhesive tape into the setting of, inner ring is softer, and the adhesive tape can only be to opening inside etting, and the fish for avoiding capture is run away, and is improved
The success rate of fishing.
Preferably, the nettle on etting is formed by three bursts of high-strength polyethylene strands solderless wrapped connections, high-strength polyethylene strands
Middle part is interspersed with copper alloy, high-strength polyethylene strands and the calcium carbonate filled compound of copper alloy.It selects made of above-mentioned material
Anti-current-rush effect is unlikely to deform well nettle in water and the toughness of nettle, intensity, corrosion resistance are high, is significantly mentioned using nettle
The secured intensity of high etting, avoids etting from rupturing, and improves the safety of otter-trawl, and nettle surface smoothness is high, in cultivation water
Biology is not easy to be adhered to etting surface, avoids cultivation etting mesh blocking, improves the water flow exchange inside and outside etting, is conducive to mention
The hydrodynamic performance and fishing efficiency of high netting gear.
Compared with prior art, the invention has the benefit that network interface is equipped with multiple detachable floating balls, etting can be changed
Buoyancy, make adjustment appropriate in different waters and depth, be conducive to catch, in trawlnet dragging process utilize shower
So that trawlnet and sea bed is kept certain distance, destruction of the bottom line to seabed during towing, the water column ejected can be effectively prevented
The effect of traditional otter-trawl indsole guiding principle agitation substrate can be played, pulling frame ensure that the stabilization of whole device in the process of running
Property, there is the ability of preferable wind and wave resistance stream, especially operation can more show its underwater appearance at the area depth of water Liu great and high sea
Fish can be trapped in inside otter-trawl by the reliability and catching rate of state, the design into hopper, escape fish can not, nettle table
Face slickness is high, and the biology in cultivation water is not easy to be adhered to etting surface, avoids cultivation etting mesh blocking, improves in etting
Outer water flow exchange, indirectly improves the survival rate of fish.
Present invention employs a kind of friendly otter-trawls that above-mentioned technical proposal provides, and compensate for the deficiencies in the prior art,
Reasonable design, easy operation.
Detailed description of the invention
Fig. 1 is a kind of friendly otter-trawl structural schematic diagram of the present invention；
Fig. 2 is the schematic diagram of internal structure of etting of the present invention；
Fig. 3 is the structural schematic diagram of network management of the present invention；
Fig. 4 is the structural schematic diagram that the present invention pulls frame；
Fig. 5 is the structural schematic diagram of the detachable floating ball of the present invention；
Fig. 6 is structural schematic diagram of the present invention into hopper；
Fig. 7 is the structural schematic diagram of nettle of the present invention.
Description of symbols: 1 pulls frame；101 drag guiding principle connection ring；102 reinforcing ribs；103 barrier items；104 arcuate brackets；
105 network interface brackets；106 support rods；107 net bows；2 network managements；3 ettings；4 detachable floating balls；41 pressing plates；42 floats are seperated；43
Roller；44 central cavities；45 centralized positioning seats；46 mounting grooves；5 into hopper；51 inner rings；52 adhesive tape；53 inclination connection straps；54 is fixed
Position ring；6 sinkers；7 bracing rings；8 take lymphogranuloma inguinale；9 fixed rings；10 separate mesh；11 water inlet supervisors；12 water inlet pipes；13 hole for water sprayings；14
Nettle；141 copper alloys；142 carbonic acid calcium compounds；143 high-strength polyethylene strands.
Specific embodiment
Present invention is further described in detail with attached drawing with reference to embodiments:
Embodiment 1:
As shown in figs. 1-7, a kind of friendly otter-trawl, including the etting 3 for fishing, the end of etting 3 is equipped with fixed ring 9,
Etting 3 pulls frame 1 by the connection of fixed ring 9, and several detachable floating balls 4 are equipped at the network interface of etting 3, and the two sides of etting 3 connect
It is connected to sinker 6, the lower section of etting 3 connects network management 2.When fishing boat is advanced, pulls and pull frame, otter-trawl can be strutted, fish
Enter from the network interface of etting, network interface is equipped with multiple detachable floating balls, can change the buoyancy of etting, in different waters and depth
Make adjustment appropriate, be conducive to catch, the sinkers of etting two sides can fast etting subsidence velocity, cooperate float to guarantee etting
In water needed for shape and position, the trawlnet utilize network management spray water column, have enough impact forces to sea bed, make trawlnet with
There is a certain distance between sea bed, sea bed will not be damaged, and in fishing operations, the fish being caught are difficult to escape, right
The injury of fish is small, while also improving the fishing efficiency of otter-trawl.
The water inlet end of network management 2 connects water inlet pipe 12, and 12 middle section of water inlet pipe connection water inlet supervisor 11, water inlet supervisor 11 connects
External supply equipment is connect, is in hollow form inside network management 2, and the lower surface of network management 2 is equipped with hole for water spraying 13, hole for water spraying 13 every 10cm
Front is obliquely installed obliquely, and the diameter of hole for water spraying 13 is 6mm.The network management is supplied water by outside, is installed under the spacing of setting
Hole for water spraying can guarantee that enough water columns impact sea bed, make trawlnet and sea using shower in trawlnet dragging process
Bed keeps certain distance, and destruction of the bottom line to seabed during towing can be effectively prevented, and the water column ejected can play tradition
The effect of bottom line agitation substrate, makes the biology for being sunken to seabed float upwards under the impact of water column in otter-trawl.
The net bow 107 that frame 1 includes the left and right sides is pulled, net bends connection support bar 106 between 107, connects on support rod 106
The barrier item 103 being laterally arranged is connect, 106 middle section of support rod connects arcuate bracket 104 by reinforcing rib 103, and 107 bottoms of net bow connect
Connect network interface bracket 105, the fixed ring 9 on four angles connection etting 3 of network interface bracket 105.Pulling frame ensure that whole device
Stability in the process of running has the ability of preferable wind and wave resistance stream, the especially operation at the area depth of water Liu great and high sea
The reliability and catching rate that its underwater posture can more be shown, had not only saved the consumption of activity duration and the energy, but also reduced
Life security risk during operation, four angle connection network interface brackets of etting can make etting be not in turn over net in fishing, resistance
The setting of parting bead obstructs some ocean rubbish, avoids unnecessary sundries from blocking into hopper, reduces catching rate.
Detachable floating ball 4 includes centralized positioning seat 45, is equipped with central cavity 44, centralized positioning in the middle part of centralized positioning seat 45
The edge of seat 45 is equidistantly equipped with the corresponding mounting grooves 46 of 5-6, and the two sides of mounting groove 46 are flexibly connected roller 43, on roller 43
It is connected with pressing plate 41, float fission 42 is connected in mounting groove 46.Float fission is assemblied to form with centralized positioning seat, and float is seperated
Between be respectively arranged with independent hollow cavity, even if there is damaged and corresponding float failure, other do not occur damaged
Float fission can still reuse, and the clamping of float fission one end squeezes installation with formation in mounting groove, while being fixed by pressing plate
The case where float is seperated, is not in centralized positioning seat and the separation of float fission in guarantee use process, it is ensured that floating ball can
Normal use.
It states and is equipped with inside etting 3 into hopper 5, be equipped with bracing ring 7,3 middle part lateral connection separate mesh of etting into 5 side of hopper
10,3 end of etting, which is connected with, takes lymphogranuloma inguinale 8.Fish can be collected into hopper to etting, bracing ring plays support to etting and makees
With, deformation is prevented, it the phenomenon that etting is divided into upper layer and lower layer, fish is made to be not in serious accumulation by filter, will after fishing
Fish is poured out from taking in lymphogranuloma inguinale.
It include positioning ring 54 into hopper 5,54 inner loop of positioning ring is furnished with inclination connection strap 53, and inclination connection strap 53 connects interior
51 are enclosed, connects adhesive tape 52 inside inner ring 51.Into inside hopper positioning ring on the one hand be capable of fixing etting, on the other hand can make fish from
The entrance enters, and the adhesive tape of inner ring setting is softer, and the adhesive tape can only be to opening inside etting, and the fish for avoiding capture is run away,
The water flow exchange inside and outside etting is improved, the hydrodynamic performance and fishing efficiency that improve netting gear are conducive to.
Nettle 14 on etting 3 is formed by three bursts of 143 solderless wrapped connections of high-strength polyethylene strands, high-strength polyethylene strands 143
Middle part is interspersed with copper alloy 141, high-strength polyethylene strands 143 and the calcium carbonate filled compound 142 of copper alloy 141.In selection
Stating nettle made of material, anti-current-rush effect is unlikely to deform well in water and the toughness of nettle, intensity, corrosion resistance are high, is made
The secured intensity that etting is significantly improved with nettle, avoids etting from rupturing, and improves the safety of otter-trawl, nettle surface smoothness
Height, the biology in cultivation water are not easy to be adhered to etting surface, avoid cultivation etting mesh blocking, improve the water flow inside and outside etting
Exchange, indirectly improves the survival rate of fish.
Embodiment 2:
As shown in figs. 1-7, this otter-trawl in actual use, is put into the waters for needing to catch by a kind of friendly otter-trawl
In, then making this otter-trawl slowly submerged, fishing boat is pulled by traction rope and pulls frame 1, the etting connecting with dragging frame 1
3 open, and the network management 2 of 3 bottom of etting can spray water column, and water column has certain impact force that otter-trawl and sea bed is made to have spacing, no
Sea bed can be damaged, pulls fish during otter-trawl that can enter from into 5 middle reaches of hopper, the fish swum can be deposited in etting
Otter-trawl after fishing, is pulled out the water surface, fish takes lymphogranuloma inguinale to go out from 3 end of etting by portion.
Routine operation in above-described embodiment 1,2 is well known to those skilled in the art, herein without repeating.
Technical solution of the present invention is described in detail in embodiment described above, it should be understood that the above is only
For specific embodiments of the present invention, it is not intended to restrict the invention, all any modifications made in spirit of the invention,
Supplement or similar fashion substitution etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of friendly otter-trawl, including the etting (3) for fishing, it is characterised in that: the end of the etting (3) is equipped with
Fixed ring (9), the etting (3) pull frame (1) by fixed ring (9) connection, are equipped at the network interface of the etting (3) several
Detachable floating ball (4), the two sides of the etting (3) are connected with sinker (6), and the lower section of the etting (3) connects network management (2).
2. a kind of friendly otter-trawl according to claim 1, it is characterised in that: the water inlet end of the network management (2) connects
Water inlet pipe (12), water inlet pipe (12) the middle section connection water inlet supervisor (11), water inlet supervisor (11) connection is external to supply
Wetting system, the internal network management (2) is in hollow form, and the lower surface of network management (2) is equipped with hole for water spraying (13) every 10cm-15cm,
Front is obliquely installed the hole for water spraying (13) obliquely, and the diameter of the hole for water spraying (13) is 5mm-8mm.
3. a kind of friendly otter-trawl according to claim 1, it is characterised in that: the dragging frame (1) includes left and right
The net of two sides bends (107), connection support bar (106) between the net bow (107), and connection is laterally set on the support rod (106)
The barrier item (103) set, support rod (106) middle section pass through reinforcing rib (103) connection arcuate bracket (104), the net bow
(107) bottom connection network interface bracket (105), four angles of the network interface bracket (105) connect the fixed ring (9) on etting (3).
4. a kind of friendly otter-trawl according to claim 1, it is characterised in that: the detachable floating ball (4) includes
Centralized positioning seat (45), centralized positioning seat (45) middle part are equipped with central cavity (44), the side of the centralized positioning seat (45)
Edge is equidistantly equipped with 5-6 corresponding mounting grooves (46), and the two sides of the mounting groove (46) are flexibly connected roller (43), the rolling
It is connected on column (43) pressing plate (41), it is seperated (42) that float is connected in the mounting groove (46).
5. a kind of friendly otter-trawl according to claim 1, it is characterised in that: be equipped with inside the etting (3) into fish
It struggles against (5), described to be equipped with bracing ring (7) into hopper (5) side, lateral connection separate mesh (10), the net in the middle part of the etting (3)
Clothing (3) end, which is connected with, takes lymphogranuloma inguinale (8).
6. a kind of friendly otter-trawl according to claim 1, it is characterised in that: it is described into hopper (5) include positioning ring
(54), positioning ring (54) inner loop is furnished with inclination connection strap (53), and the inclination connection strap (53) connects inner ring (51), institute
It states and connects adhesive tape (52) inside inner ring (51).
7. a kind of friendly otter-trawl according to claim 1, it is characterised in that: the nettle (14) on the etting (3)
It is formed by three bursts of high-strength polyethylene strands (143) solderless wrapped connections, is interspersed with copper alloy in the middle part of the high-strength polyethylene strands (143)
(141), the high-strength polyethylene strands (143) and copper alloy (141) calcium carbonate filled compound (142).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425557.4A CN109463358A (en) | 2018-11-27 | 2018-11-27 | A kind of friendly otter-trawl |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811425557.4A CN109463358A (en) | 2018-11-27 | 2018-11-27 | A kind of friendly otter-trawl |
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| CN109463358A true CN109463358A (en) | 2019-03-15 |
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| CN201811425557.4A Pending CN109463358A (en) | 2018-11-27 | 2018-11-27 | A kind of friendly otter-trawl |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110959586A (en) * | 2019-05-08 | 2020-04-07 | 自然资源部第一海洋研究所 | Modular benthonic animal trawl |
| CN112450163A (en) * | 2020-11-03 | 2021-03-09 | 中国水产科学研究院南海水产研究所 | Double-layer net for collecting escaping catches |
| CN112450162A (en) * | 2020-11-03 | 2021-03-09 | 中国水产科学研究院南海水产研究所 | Rectangular net bag |
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| US4180935A (en) * | 1977-08-29 | 1980-01-01 | Massachusetts Institute Of Technology | Hydrofoil trawl door |
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