CN110521681A - A kind of tear-away Cod-ends of Trawl of nested type separation catches and operational method - Google Patents
A kind of tear-away Cod-ends of Trawl of nested type separation catches and operational method Download PDFInfo
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- CN110521681A CN110521681A CN201910934299.0A CN201910934299A CN110521681A CN 110521681 A CN110521681 A CN 110521681A CN 201910934299 A CN201910934299 A CN 201910934299A CN 110521681 A CN110521681 A CN 110521681A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000000926 separation method Methods 0.000 title claims abstract description 19
- 239000002775 capsule Substances 0.000 claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 208000032963 Capsule physical issue Diseases 0.000 claims description 2
- 241000251468 Actinopterygii Species 0.000 abstract description 17
- 230000004083 survival effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000238557 Decapoda Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 101100468543 Caenorhabditis elegans drag-1 gene Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
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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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- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
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- Marine Sciences & Fisheries (AREA)
Abstract
The invention discloses a kind of tear-away Cod-ends of Trawl of nested type separation catches and operational methods, including fixed frame, connection framework one, locking device one, big net capsule and lead ring etc.；Net capsule is designed to multiple nested type net capsules in the present invention, and the mesh size of each net capsule is different；The mesh of cod-end size of innermost layer is maximum, and cable is most thick；Thus it is sequentially reduced the size of mesh of net capsule from inside to outside, reduces sealike colour；Outermost mesh of cod-end size is minimum, and cable is most thin；In this way, it rationally realizes the separation to different catches sizes, mitigates the sorting work of staff；It is started shedding off when falling off in the present invention from outermost layer, due to outermost layer since cable is most thin, what is loaded is mostly lesser fish, the tolerance of small size fish is smaller than the tolerance of bulky fish, it is more easily dead, and the survival ability of bulky fish is relatively strong, such sequence that falls off also complies with this rule just, and it is dead to reduce fish.
Description
Technical field
The present invention relates to sea fishery apparatus field, the tear-away Cod-ends of Trawl of specially a kind of nested type separation catches and
Operational method.
Background technique
The operating principle of trawlnet is to draw the fishing net of pouch type by ship to be caught in the sea area that it is passed through
Fishing gear；Trawl fishing has a problem that the long-time towing of i.e. trawlnet can aggravate net capsule burden, and will lead in net capsule
Catches, which squeeze, to be damaged, and causes fish injured or dead；Song Weihua once had two patents in 2015, respectively " with simultaneously
The trawlnet and its catching method (patent No. CN201310407977) of row multiple groups pouch " and " trawlnet with serial multiple groups pouch
And its catching method (patent No. CN201310407953) ", it is successively fallen off respectively using multiple pouches, to reduce each net
The towing time of capsule mitigates this problem, and still, the catches into trawlnet do not have good distinction, i.e. trawlnet is passed through
Fish shrimp crab of place etc. is no matter large or small, usually can all be dragged into the string bag, so needing a kind of technology insufficient to make up this.
Summary of the invention
The purpose of the present invention is to provide a kind of tear-away Cod-ends of Trawl of nested type separation catches and operational methods, with solution
Catches in certainly above-mentioned background technique into trawlnet do not have good distinction, i.e. trawlnet passes through fish shrimp crab of place etc. no
By size, the problem of being usually all dragged into the string bag.
To achieve the above object, the invention provides the following technical scheme: a kind of nested type separates the tear-away trawlnet of catches
Net capsule, including guiding principle is draged, innovative point is, further includes fixed frame, connection framework one, locking device one, tightening device one, receives
Tight device two, connection framework two, locking device two, fixed ring one, fixed ring two, fine-structure mesh capsule, middle net capsule, big net capsule and lead ring；
At the fixed frame left side edge with drag guiding principle right-hand end and be fixedly connected, and drag and be uniformly fixedly connected with several lead rings on guiding principle；
The connection framework one is fixedly connected on outside fixed frame by several locking devices one, fixed on the outside of the connection framework one
It is connected with tightening device one；The connection framework two is located at one inside of connection framework, and the connection framework two passes through several lockings
Device two is fixedly connected on outside fixed frame, is fixedly connected with tightening device two on the outside of the connection framework two；The fine-structure mesh
Opening is fixedly connected at one right side edge of connection framework on the left of capsule, uniformly fixed outside longitudinal cross-section on the left of the fine-structure mesh capsule
It is connected with several fixed rings one；The middle net capsule is located at the intracapsular side of fine-structure mesh, and opening is fixedly connected on the left of the middle net capsule
At two right side edge of connection framework, several fixed rings two are uniformly fixedly connected with outside longitudinal cross-section on the left of the middle net capsule；
The big net capsule is located on the inside of middle net capsule, and opening is fixedly connected at fixed frame right openings on the left of the big net capsule；Institute
It states one right side cinch cord of tightening device to be sequentially connected in series in a ring in corresponding fixed ring one, and the fixed company of cinch cord right-hand end
It connects in the fixed ring one passed through for the first time；The two right side cinch cord of locking device is sequentially connected in series corresponding fixed ring in a ring
In two, and cinch cord right-hand end is fixedly connected in the fixed ring two passed through for the first time；The locking device one and locking device
Drawstring in two passes sequentially through corresponding lead ring and is connected with fishing boat.
Preferably, the locking device one is identical as the structure of locking device two.
Preferably, one specific structure of locking device includes shell, guide wheel one, guide wheel two, drawstring, spring and lock
Tongue；The guide wheel one and guide wheel two are respectively and movably connected to inside shell lower left side；The lock tongue vertical movable is connected to shell
Upper inside is equipped with spring, the lock tongue upside and connection framework one between the lock tongue bottom surface and the interior of shell bottom surface
The corresponding lockhole in inside is connected；The drawstring right-hand end passes sequentially through the fixed company of guide wheel one and guide wheel two and lock tongue bottom surface center
It connects.
Preferably, being located at the positive downside in lock tongue bottom surface center on the right side of the guide wheel two.
Preferably, the tightening device two is identical as the structure of tightening device one, the specific knot of the tightening device one
Structure include fixed shell, inner cavity, fixture block, fixed pin, pulley blocks one, pulley blocks two, one-way wheel one, unilateral bearing one, cinch cord,
Unilateral bearing two and one-way wheel two；The fixture block is fixedly connected in the corresponding position of fixed frame by fixed pin；In described
Chamber is located at fixed enclosure interior, and pulley blocks one are fixedly connected in the inner cavity left-side center, solid in center on the right side of the inner cavity
Surely pulley blocks two are connected；One center of one-way wheel is fixedly connected on inner lower on the right side of fixed shell, outside the one-way wheel one
Portion is fixedly connected with one-way wheel one；Two center of unilateral bearing is fixedly connected on upper inside on the right side of fixed shell, the list
One-way wheel two is fixedly connected with outside to bearing two；The cinch cord left end passes sequentially through one-way wheel two, one-way wheel one, pulley blocks
Two inner pulleys, inner cavity and one inner pulley of pulley blocks are fixedly connected with center on the right side of fixture block.
Preferably, several circles of wrapped anti-clockwise pass through unidirectionally several circles of cinch cord wound clockwise again after one-way wheel two
Wheel one.
Preferably, the serpentine-like arrangement of cinch cord in the inner cavity is placed.
A kind of nested type separation tear-away Cod-ends of Trawl operational method of catches includes the following steps:
A. into the water by this Cod-ends of Trawl, starting fishing boat makes this Cod-ends of Trawl start to pull fishing operation；
B. fishing operation after a certain period of time, since the mesh of cod-end size of fine-structure mesh capsule, middle net capsule and big net capsule is different, to realize
Separation to different catches sizes then successively pulls locking device one and locking device two to separate fine-structure mesh capsule and middle net
Capsule；
C. pull one medium pulling rope of locking device that connection framework one and fixed frame can be made to catch separate and remote from moving in step B
The trawlnet of operation is fished out, while also will start tightening device one, will continue to pull drawstring after the cinch cord in inner cavity is completely pulled out
Close up to opening on the left of fine-structure mesh capsule, it is ensured that catches are entirely located in fine-structure mesh capsule, similarly complete in net capsule separation and receipts
Mouthful；
D. directly fixed frame and big net capsule are drawn on fishing boat finally by draging guiding principle, then pass sequentially through drawstring for middle net capsule
It is also successively drawn on fishing boat and fulfils assignment with fine-structure mesh capsule.
Compared with prior art, the present invention provides a kind of tear-away Cod-ends of Trawl of nested type separation catches and operators
Method, have it is following the utility model has the advantages that
(1) net capsule is designed to multiple nested type net capsules in the present invention, and the mesh size of each net capsule is different；Innermost layer
Mesh of cod-end size is maximum, and cable is most thick；Thus it is sequentially reduced the size of mesh of net capsule from inside to outside, reduces sealike colour；Most
The mesh of cod-end size of outer layer is minimum, and cable is most thin；In this way, the separation to different catches sizes is rationally realized,
Mitigate the sorting work of staff.
(2) started shedding off from outermost layer when falling off in the present invention, due to outermost layer since cable is most thin, loading be mostly compared with
The tolerance of small fish, small size fish is smaller than the tolerance of bulky fish, it is easier to and it is dead, and bulky fish
The survival ability of class is relatively strong, and such sequence that falls off also complies with this rule just, and it is dead to reduce fish.
(3) unilateral bearing being arranged in tightening device of the present invention ensures that drawstring can only be pulled unidirectionally, also ensures that
It will not be automatically opened after sealing net capsule opening, so that it is guaranteed that catches, which are entirely located in net capsule, avoids loss.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of locking device；
Fig. 3 is the structural schematic diagram of tightening device；
In figure: 1- drags guiding principle；2- fixed frame；3- connection framework one；4- locking device one；5- tightening device one；6- tightening device
Two；7- connection framework two；8- locking device two；9- fixed ring one；10- fixed ring two；11- fine-structure mesh capsule；Net capsule in 12-；13- is big
Net capsule；14- lead ring；41- shell；42- guide wheel one；43- guide wheel two；44- drawstring；45- spring；46- lock tongue；51- fixes shell；
The inner cavity 52-；53- fixture block；54- fixed pin；55- pulley blocks one；56- pulley blocks two；57- one-way wheel one；58- unilateral bearing one；
59- cinch cord；510- unilateral bearing two；511- one-way wheel two.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of technical solution: a kind of nested type separation tear-away Cod-ends of Trawl of catches,
Including draging guiding principle 1, further includes fixed frame 2, connection framework 1, locking device 1, tightening device 1, tightening device 26, connects
Connect frame 27, locking device 28, fixed ring 1, fixed ring 2 10, fine-structure mesh capsule 11, middle net capsule 12, big net capsule 13 and lead ring
14；At 2 left side edge of fixed frame with drag 1 right-hand end of guiding principle and be fixedly connected, and drag uniformly be fixedly connected on guiding principle 1 it is several
Lead ring 14；The connection framework 1 is fixedly connected on outside fixed frame 2 by several locking devices 1, the connection framework
One 3 outsides are fixedly connected with tightening device 1；The connection framework 27 is located at one 3 inside of connection framework, the connection framework
27 are fixedly connected on outside fixed frame 2 by several locking devices 28, and 27 outside of connection framework is fixedly connected with receipts
Tight device 26；The 11 left side opening of fine-structure mesh capsule is fixedly connected at one 3 right side edge of connection framework, the fine-structure mesh capsule 11
Several fixed rings 1 are uniformly fixedly connected with outside the longitudinal cross-section of left side；The middle net capsule 12 is located at 11 inside of fine-structure mesh capsule, institute
It states middle 12 left side opening of net capsule to be fixedly connected at 27 right side edge of connection framework, the middle 12 left side longitudinal cross-section of net capsule
Outside is uniformly fixedly connected with several fixed rings 2 10；The big net capsule 13 is located at middle 12 inside of net capsule, the big net capsule 13
Left side opening is fixedly connected at 2 right openings of fixed frame；The one 5 right side cinch cord of tightening device is successively gone here and there in a ring
It is linked in corresponding fixed ring 1, and cinch cord right-hand end is fixedly connected in the fixed ring 1 passed through for the first time；The lock
Tight 28 right side cinch cord of device is sequentially connected in series in a ring in corresponding fixed ring 2 10, and the fixed company of cinch cord right-hand end
It connects in the fixed ring 2 10 passed through for the first time；Drawstring in the locking device 1 and locking device 28 passes sequentially through correspondence
Lead ring 14 be connected with fishing boat.
Wherein, the locking device 1 is identical as the structure of locking device 28.
As shown in Fig. 2, one 4 specific structure of locking device include shell 41, guide wheel 1, guide wheel 2 43, drawstring 44,
Spring 45 and lock tongue 46；The guide wheel 1 and guide wheel 2 43 are respectively and movably connected to inside 41 lower left side of shell；The lock tongue
46 vertical movables are connected to 41 upper inside of shell, are equipped with spring between 41 inner bottom surface of 46 bottom surface of lock tongue and the shell
45,46 upside of lock tongue is connected with corresponding lockhole on the inside of connection framework 1；44 right-hand end of drawstring, which passes sequentially through, to be led
Take turns 1 and guide wheel 2 43 be fixedly connected with 46 bottom surface center of lock tongue.
Wherein, 2 43 right side of guide wheel is located at the positive downside in 46 bottom surface of lock tongue center.
As shown in figure 3, the tightening device 26 is identical as the structure of tightening device 1, the tool of the tightening device 1
Body structure include fixed shell 51, inner cavity 52, fixture block 53, fixed pin 54, pulley blocks 1, pulley blocks 2 56, one-way wheel 1,
Unilateral bearing 1, cinch cord 59, unilateral bearing 2 510 and one-way wheel 2 511；The fixture block 53 connects by the way that fixed pin 54 is fixed
It connects in the corresponding position of fixed frame 2；The inner cavity 52 is located inside fixed shell 51, solid in 52 left-side center of inner cavity
Surely pulley blocks 1 are connected with, are fixedly connected with pulley blocks 2 56 in the 52 right side center of inner cavity；One 57 center of one-way wheel
It is fixedly connected on fixed 51 right side inner lower of shell, is fixedly connected with one-way wheel 1 outside the one-way wheel 1；It is described
2 510 center of unilateral bearing is fixedly connected on fixed 51 right side upper inside of shell, and 2 510 outside of unilateral bearing is fixed to be connected
It is connected to one-way wheel 2 511；59 left end of cinch cord passes sequentially through one-way wheel 2 511, one-way wheel 1, inside pulley blocks 2 56
Pulley, inner cavity 52 and one 55 inner pulley of pulley blocks are fixedly connected with 53 right side center of fixture block.
Wherein, several circles of wrapped anti-clockwise pass through list to several circles of 59 wound clockwise of cinch cord again after one-way wheel 2 511
To wheel 1；The serpentine-like arrangement of cinch cord 59 in the inner cavity 52 is placed.
A kind of nested type separation tear-away Cod-ends of Trawl operational method of catches includes the following steps:
A. into the water by this Cod-ends of Trawl, starting fishing boat makes this Cod-ends of Trawl start to pull fishing operation；
B. fishing operation after a certain period of time, since the mesh of cod-end size of fine-structure mesh capsule 11, middle net capsule 12 and big net capsule 13 is different, from
And the separation to different catches sizes is realized, then locking device 1 and locking device 28 is successively pulled to separate fine-structure mesh capsule
11 and middle net capsule 12；
C. pull one 4 medium pulling rope 44 of locking device that connection framework 1 and fixed frame 2 can be made separate and remote from continuation in step B
The trawlnet of advance fishing operation, while also will start tightening device 1, can be after after the cinch cord 59 in inner cavity 52 is completely pulled out
It is continuous that drawstring 44 is pulled to close up to being open on the left of fine-structure mesh capsule 11, it is ensured that catches are entirely located in fine-structure mesh capsule 11, are similarly completed
The separation and closing in of middle net capsule 12；
D. directly fixed frame 2 and big net capsule 13 are drawn on fishing boat finally by draging guiding principle 1, then pass sequentially through drawstring will in
Net capsule 12 and fine-structure mesh capsule 11, which are also successively drawn on fishing boat, to fulfil assignment.
Working principle: when fishing operation, first into the water by this Cod-ends of Trawl, starting fishing boat opens this Cod-ends of Trawl
Start to pull fishing operation, since fine-structure mesh capsule 11, middle net capsule 12 are different with the mesh of cod-end size of big net capsule 13, to realize
Separation to different catches sizes, then successively pull locking device 1 and locking device 28 separate fine-structure mesh capsule 11 and in
Net capsule 12；And pull one 4 medium pulling rope 44 of locking device that connection framework 1 and fixed frame 2 can be made separate and remote from moving on
The trawlnet of fishing operation, while also will start tightening device 1, it will continue to draw after the cinch cord 59 in inner cavity 52 is completely pulled out
Dynamic drawstring 44 closes up to being open on the left of fine-structure mesh capsule 11, it is ensured that catches are entirely located in fine-structure mesh capsule 11, similarly net in completion
The separation and closing in of capsule 12；Directly fixed frame 2 and big net capsule 13 are drawn on fishing boat finally by guiding principle 1 is draged, then successively
Middle net capsule 12 and fine-structure mesh capsule 11 are also successively drawn on fishing boat by drawstring and fulfiled assignment；Here net capsule is designed to multiple embedding
Shell type net capsule, and the mesh size of each net capsule is different；The mesh of cod-end size of innermost layer is maximum, and cable is most thick；Thus by
Size of mesh that is interior and being sequentially reduced net capsule outside reduces sealike colour；Outermost mesh of cod-end size is minimum, and cable is most thin；
In this way, it rationally realizes the separation to different catches sizes, mitigates the sorting work of staff, secondly, falling off
When started shedding off from outermost layer, according to certain time sequence or setting fall off the time；Here outermost layer due to cable it is most thin, dress
What is carried is mostly lesser fish, and the tolerance of small size fish is smaller than the tolerance of bulky fish, it is easier to and it is dead, and
The survival ability of bulky fish is relatively strong；Such sequence that falls off also complies with this rule just, and it is dead to reduce fish.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of nested type separates the tear-away Cod-ends of Trawl of catches, including drags guiding principle (1), which is characterized in that further include fixed frame
Frame (2), connection framework one (3), locking device one (4), tightening device one (5), tightening device two (6), connection framework two (7),
Locking device two (8), fixed ring one (9), fixed ring two (10), fine-structure mesh capsule (11), middle net capsule (12), big net capsule (13) and lead ring
(14)；
At fixed frame (2) left side edge with drag guiding principle (1) right-hand end and be fixedly connected, and drag uniformly fixed on guiding principle (1) connect
It is connected to several lead rings (14)；
The connection framework one (3) is fixedly connected on fixed frame (2) outside, the connection by several locking devices one (4)
Tightening device one (5) is fixedly connected on the outside of frame one (3)；
The connection framework two (7) is located on the inside of connection framework one (3), and the connection framework two (7) passes through several locking devices
Two (8) are fixedly connected on fixed frame (2) outside, are fixedly connected with tightening device two (6) on the outside of the connection framework two (7)；
Opening is fixedly connected at connection framework one (3) right side edge on the left of the fine-structure mesh capsule (11), the fine-structure mesh capsule (11)
Several fixed rings one (9) are uniformly fixedly connected with outside the longitudinal cross-section of left side；
The middle net capsule (12) is located on the inside of fine-structure mesh capsule (11), and opening is fixedly connected on connection frame on the left of the middle net capsule (12)
At frame two (7) right side edge, several fixed rings two are uniformly fixedly connected with outside longitudinal cross-section on the left of the middle net capsule (12)
(10)；
The big net capsule (13) is located on the inside of middle net capsule (12), and opening is fixedly connected on fixed frame on the left of the big net capsule (13)
At frame (2) right openings；
Cinch cord is sequentially connected in series in a ring in corresponding fixed ring one (9) on the right side of the tightening device one (5), and cinch cord is right
Side end is fixedly connected in the fixed ring one (9) passed through for the first time；
Cinch cord is sequentially connected in series in a ring in corresponding fixed ring two (10) on the right side of the locking device two (8), and cinch cord
Right-hand end is fixedly connected in the fixed ring two (10) passed through for the first time；
Drawstring in the locking device one (4) and locking device two (8) passes sequentially through corresponding lead ring (14) and fishing boat phase
Even.
2. a kind of nested type according to claim 1 separates the tear-away Cod-ends of Trawl of catches, it is characterised in that: the lock
Tight device one (4) is identical as the structure of locking device two (8).
3. a kind of nested type according to claim 1 or 2 separates the tear-away Cod-ends of Trawl of catches, it is characterised in that: institute
State locking device one (4) specific structure include shell (41), guide wheel one (42), guide wheel two (43), drawstring (44), spring (45) and
Lock tongue (46)；
The guide wheel one (42) and guide wheel two (43) are respectively and movably connected to inside shell (41) lower left side；
Lock tongue (46) vertical movable is connected to shell (41) upper inside, lock tongue (46) bottom surface and the shell (41)
Spring (45) are equipped between inner bottom surface, are connected on the upside of the lock tongue (46) with lockhole corresponding on the inside of connection framework one (3)；
Drawstring (44) right-hand end passes sequentially through guide wheel one (42) and guide wheel two (43) and fixes with lock tongue (46) bottom surface center
Connection.
4. a kind of nested type according to claim 3 separates the tear-away Cod-ends of Trawl of catches, it is characterised in that: described to lead
It takes turns and is located at the positive downside in lock tongue (46) bottom surface center on the right side of two (43).
5. a kind of nested type according to claim 1 separates the tear-away Cod-ends of Trawl of catches, it is characterised in that: the receipts
Tight device two (6) is identical as the structure of tightening device one (5), and the specific structure of the tightening device one (5) includes fixed shell
(51), inner cavity (52), fixture block (53), fixed pin (54), pulley blocks one (55), pulley blocks two (56), one-way wheel one (57), unidirectional
Bearing one (58), cinch cord (59), unilateral bearing two (510) and one-way wheel two (511)；
The fixture block (53) is fixedly connected in the corresponding position of fixed frame (2) by fixed pin (54)；
The inner cavity (52) is located at fixed shell (51) inside, is fixedly connected with pulley blocks one in inner cavity (52) left-side center
(55), pulley blocks two (56) are fixedly connected in center on the right side of the inner cavity (52)；
One-way wheel one (57) center is fixedly connected on inner lower on the right side of fixed shell (51), and the one-way wheel one (57) is outside
Portion is fixedly connected with one-way wheel one (57)；
Unilateral bearing two (510) center is fixedly connected on upper inside on the right side of fixed shell (51), the unilateral bearing two
(510) external to be fixedly connected with one-way wheel two (511)；
It is internal sliding that cinch cord (59) left end passes sequentially through one-way wheel two (511), one-way wheel one (57), pulley blocks two (56)
Wheel, inner cavity (52) and pulley blocks one (55) inner pulley are fixedly connected with center on the right side of fixture block (53).
6. a kind of nested type according to claim 5 separates the tear-away Cod-ends of Trawl of catches, it is characterised in that: the receipts
Several circles of wrapped anti-clockwise pass through one-way wheel one (57) to several circles of tight rope (59) wound clockwise again after one-way wheel two (511).
7. a kind of nested type according to claim 5 separates the tear-away Cod-ends of Trawl of catches, it is characterised in that: in described
The serpentine-like arrangement of cinch cord (59) in chamber (52) is placed.
8. based on a kind of operational method of the nested type separation tear-away Cod-ends of Trawl of catches described in claim 1, step
It is as follows:
A. into the water by this Cod-ends of Trawl, starting fishing boat makes this Cod-ends of Trawl start to pull fishing operation；
B. fishing operation after a certain period of time, since the mesh of cod-end size of fine-structure mesh capsule, middle net capsule and big net capsule is different, to realize
Separation to different catches sizes then successively pulls locking device one and locking device two to separate fine-structure mesh capsule and middle net
Capsule；
C. pull one medium pulling rope of locking device that connection framework one and fixed frame can be made to catch separate and remote from moving in step B
The trawlnet of operation is fished out, while also will start tightening device one, will continue to pull drawstring after the cinch cord in inner cavity is completely pulled out
Close up to opening on the left of fine-structure mesh capsule, it is ensured that catches are entirely located in fine-structure mesh capsule, similarly complete in net capsule separation and receipts
Mouthful；
D. directly fixed frame and big net capsule are drawn on fishing boat finally by draging guiding principle, then pass sequentially through drawstring for middle net capsule
It is also successively drawn on fishing boat and fulfils assignment with fine-structure mesh capsule.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110143506.8A CN112956454B (en) | 2019-09-29 | 2019-09-29 | Operation method for nested separated fishing catch object and capable of falling off trawl bag |
| CN201910934299.0A CN110521681B (en) | 2019-09-29 | 2019-09-29 | Nested type detachable trawl bag for separating catch and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910934299.0A CN110521681B (en) | 2019-09-29 | 2019-09-29 | Nested type detachable trawl bag for separating catch and operation method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110143506.8A Division CN112956454B (en) | 2019-09-29 | 2019-09-29 | Operation method for nested separated fishing catch object and capable of falling off trawl bag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111972360A (en) * | 2020-09-01 | 2020-11-24 | 中国水产科学研究院南海水产研究所 | Special catching and expanding net for acete chinensis |
| CN111972361A (en) * | 2020-09-01 | 2020-11-24 | 中国水产科学研究院南海水产研究所 | Marine nuclear power station intake shrimp interception net |
| WO2024055393A1 (en) * | 2022-09-13 | 2024-03-21 | 浙江海洋大学 | Fishing-boat trawl net having net bag capable of being rapidly separated |
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| WO2024055393A1 (en) * | 2022-09-13 | 2024-03-21 | 浙江海洋大学 | Fishing-boat trawl net having net bag capable of being rapidly separated |
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| CN112956454A (en) | 2021-06-15 |
| CN110521681B (en) | 2021-06-08 |
| CN112956454B (en) | 2022-03-29 |
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