CN103478088B - Dragnet with a plurality of serial bags and fishing method using dragnet - Google Patents
Dragnet with a plurality of serial bags and fishing method using dragnet Download PDFInfo
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- CN103478088B CN103478088B CN201310407953.5A CN201310407953A CN103478088B CN 103478088 B CN103478088 B CN 103478088B CN 201310407953 A CN201310407953 A CN 201310407953A CN 103478088 B CN103478088 B CN 103478088B
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Abstract
The invention discloses a dragnet with a plurality of serial bags and fishing method using the dragnet. The dragnet comprises a net wing, a net body and a net bag. The net bag comprises the plurality of bags which are serially connected end to end and frame. Each frame is provided with a front-rear frame open-close device, a bag separating device and a controller. By the arrangement, fish captured by the dragnet can be gathered in corresponding bags in batches, separated from the net body along with the bags, and dragged and lifted to a fishing boat, the problems of pressing, scratch, death even deterioration, caused by long-term trawling, of the captured fish are solved, survival rate and freshness quality of the captured fish are increased, and power of a fishing boat winch can be relieved due to lifting in batches and light bags.
Description
Technical field
The present invention relates to a kind of Fishing tool, refer more particularly to a kind of trawlnet with serial many groups pouch and the catching method thereof that improve catches survival rate and fresh and alive degree.
Background technology
Trawlnet is a kind of filter fishing gear of movement, relies on fishing boat power towing pouch shape fishing gear, forces the fished species such as fish, shrimp, crab to enter in net capsule, reach the object of fishing in the waters of its process.
Just due to trawling maneuverability, strong adaptability, production efficiency is high, has development speed history and feature faster.Modern Trawl gear not only can be used for fishing for fish, also can be used for fishing for siphonopods, shellfish and shell-fish; Not only can be used for fishing for and perch the fished species that the depth of water only has several meters, tens meters, also can be used for fishing for and perch the deep-sea kind that the depth of water reaches thousands of meters.This high efficiency fishing for causes immense pressure to marine fishery resources, more fishery harvesting resource falls into recession, and each drag operation time is multiplied, and during the operation of net capsule, distortion drainability is poor, cause the catches extruding entered in net, scratch, death, even rotten.For this reason, both at home and abroad by a large amount of technological improvements, from the use of square mesh, towing method is improved, the adjustment etc. of towing time improves fishery harvesting quality, if Authorization Notice No. is CN2657393Y, name is called a kind of utility model patent of net sack of fishing trawl, disclose a kind of fishing trawl structure, adopt the net capsule structure that square mesh and diamond mesh combine, improve fishing selectivity, but owing to fundamentally not reforming gear structure and catches collecting mode, in trawlnet towing process for a long time, catches are in a large amount of gatherings of net capsule, pile up, the survival rate of catches and fresh and alive degree are not still improved, product quality is still lower.
Summary of the invention
When the present invention mainly solves existing trawling net capsule pile up that yielding and drainability poorly causes catches to extrude by catches, scratch, dead, even rotten technical problem; Provide a kind of energy Controling network capsule extraction time, the trawlnet with serial many groups pouch improving catches survival rate and fresh and alive degree and catching method thereof.
In order to solve the technical problem of above-mentioned existence, the present invention mainly adopts following technical proposals:
Trawlnet with serial many groups pouch of the present invention, for the operation that drags a net in fishing of fishing boat, described trawlnet comprises wing, body and net capsule, described wing be provided be connected with fishing boat drag guiding principle, described net capsule is located at body rear end and is connected with body, and net capsule comprises
Some pouches, for splendid attire catches, multiple pouch headtotail is connected in series in body rear end, the front end pouch mouth of pouch is provided with front frame, the rear end pouch mouth of pouch is provided with after-frame, and front frame and after-frame form the import and export of pouch, each pouch are equipped with the strand guiding principle be connected with fishing boat;
Some frameworks, framework is located between two pouches, for the connection before the after-frame of previous pouch and a rear pouch between frame, framework is provided with the front and back frame opening and closing device of corresponding pouch and pouch disconnecting means and corresponding controller, and multiple framework and pouch are interconnected to form the net capsule of many group series connection bag type pastes;
Front and back frame opening and closing device, is located in framework, is used to open or close corresponding front frame or after-frame;
Pouch disconnecting means, is located in framework, controls the disengaging of pouch and framework;
Controller, for receiving the information signal of the fishery harvesting quantity monitoring parametric controller transmission on fishing boat and controlling front and back frame opening and closing device and pouch disconnecting means;
Trawlnet uses the net capsule be composed in series by multiple pouch headtotail, the catches that trawlnet is caught can be collected in corresponding pouch in batches and to depart from body towing with pouch and be promoted on fishing boat, the catches solved because catching during long-time trawlnet extrude in net capsule, abrade or problem that death is even gone bad, improve the survival rate of catches and fresh and alive quality, gradation is extracted and the lighter pouch also corresponding power alleviating fishing boat winch.
As preferably, the outer surface of described framework, front frame and after-frame is all covered with the smooth soft rubber layer of one deck, soft surface is smooth without corner angle, dictyosome and each head rope can not be hooked when catching operation and hauling, safe to use, thicker rubber layer also contributes to absorbing the energy clashed into, and prevents the harm that powerful collision produces.
As preferably, the rectangular shape of described framework, comprise interconnective upper and lower moulding and left and right moulding, the medial surface of described left and right moulding is respectively equipped with guide groove, described guide groove comprises the front guide slot and rear guide groove that are parallel to each other, the after-frame of previous pouch is installed in described front guide slot and also can slides along front guide slot, the front frame of a rear pouch is installed in described rear guide groove and also can slides along rear guide groove, described front and back frame opening and closing device and pouch disconnecting means and controller are all located in the lower moulding of framework, the front and back frame of the bootable pouch of front and back guide groove slides, pouch mouth can be opened or closed with the need, meet the job requirements that multiple pouch is collected catches successively and departed from body.
As preferably, the front frame of described pouch is identical with rear frame structure, all rectangular shape, front frame comprises interconnective upper sheer pole and left and right vertical pole, the width of described cross bar length and described framework matches, vertical pole is the Collapsible structure of hollow, top and the cross tube end of vertical pole are affixed, bottom and the sheer pole end of vertical pole are affixed, flexible member is respectively equipped with between the both ends of upper sheer pole, one end of described flexible member is connected with cross tube end, the other end is connected with sheer pole end, the drift of flexible member and the purse up length of vertical pole match, telescopic vertical pole makes the front and back frame of rectangle freely open or close, pouch mouth is correspondingly made to open and close, flexible member can make front frame or after-frame automatically reply purse up after running out of steam, control simple and reliable.
As preferably, described vertical pole is telescopic caulking gum bellows, described rubber bellows is provided with tracheae, described tracheae is communicated with corresponding controllers, gases at high pressure are entered in rubber bellows by tracheae and bellows are stretched to sinciput and overcomes the pulling force of flexible member and front frame or after-frame are opened, when closedown gases at high pressure after gas of releasing, then rubber bellows automatically resets retraction, frame merit or the closedown of after-frame purse up before making under the pulling force effect of flexible member simultaneously.
As preferably, described flexible member is located in the hollow cavity of described rubber bellows.
As preferably, telescopic cylinder is provided with in described vertical pole, described telescopic cylinder is connected with corresponding controllers, telescopic cylinder promote cross tube move, front frame or after-frame are opened, and when catches gather get and pile with pouch time, then controller control telescopic cylinder resets and drives cross tube to retract, front frame or after-frame are closed, pouch mouth is closed, for the disengaging of net capsule is got ready.
As preferably, described front and back frame opening and closing device comprises high pressure gas holder as power source and corresponding control valve, described control valve is controlled by controller, described high pressure gas holder is communicated with corresponding rubber bellows or telescopic cylinder by control valve, front and back frame opening and closing device adopts pneumatic control, and structure is simple, safe and reliable, and power source volume is little, thrust large, meets in the particular/special requirement used compared with abyssal floor.
As preferably, described pouch disconnecting means comprises the left and right moulding of being located at described framework respectively and the keying plate of guide groove sidewall after capping, described keying plate is controlled by controller, when keying plate is opened, the upper side of rear guide groove is opened, before being installed in the pouch of rear guide groove, frame departs from guide groove, and drive pouch and framework apart, before pouch after disengaging, frame closes owing to continuing purse up under the retraction force effect of flexible member, pouch is now pulled by twisting guiding principle accordingly and is reclaimed by fishing boat winch and be promoted to deck, when keying plate is closed, then, guide groove side is closed again, by arranging keying plate to be opened/closed on the moulding of framework left and right, the front frame making originally to be connected to corresponding pouch in rear guide groove can depart from rear guide groove under the Action of Gravity Field of pouch, controller controls open and close plate and then control pouch, make pouch can depart from body successively on request, reach minimizing catches to assemble and the accumulation time in net capsule.
With the trawlnet live body catching method of multiple series connection pouch, its step is as follows:
1) controller in each framework all sets the trawl fishing towing time and the separation time of respective settings pouch, frame and after-frame before multiple pouch are installed in respectively in corresponding framework guide groove, multiple pouch forms the net capsule that is end-to-end in series-like and is connected to body rear end;
2) trawlnet is put into water, start fishing boat and trawlnet is opened start to pull fishing operation;
3) controller starts the front and back frame opening and closing device of corresponding frame, gases at high pressure are made to be filled with rubber bellows in vertical pole or telescopic cylinder, vertical pole extending forwards also makes sheer pole separately form the pouch mouth of expansion, now, the pouch of multiple headtotail series connection forms through net capsule, is built up in the pouch of net capsule afterbody through multiple framework and corresponding pouch mouth by the catches that trawlnet is caught;
4) controller in net capsule afterbody framework obtains fishery harvesting quantity monitor message signal from fishing boat, judge that the pouch inner accumulated of net capsule afterbody has the separation time of enough catches or afterbody pouch to arrive, controller then now in net capsule afterbody framework cuts out front frame and the after-frame of corresponding pouch by front and back frame opening and closing device, front frame and after-frame return back to purse up state under the pulling force effect of flexible member;
5) after frame before pouch and the complete purse up of after-frame close, the pouch disconnecting means of controller control afterbody framework opens the keying plate on the moulding of framework left and right, now, the front frame being full of the afterbody pouch of catches departs from guide groove after framework, afterbody pouch and afterbody framework apart, fishing boat relies on strand guiding principle tow back to pouch and be promoted to deck with winch, complete the recovery operation of first pouch, meanwhile, towed speed readjusted by fishing boat, guarantee that towing is stable, do not affect fishing operation;
6) remain pouch headtotail and form new net capsule, now built up in the afterbody pouch of new net capsule by the catches that trawlnet is caught;
7) controller of afterbody net capsule obtains fishery harvesting quantity monitor message signal from fishing boat, judge that afterbody pouch inner accumulated has the separation time of enough catches or afterbody pouch to arrive, then now the controller of afterbody net capsule cuts out corresponding front frame and after-frame by front and back frame opening and closing device, and front frame and after-frame return back to purse up state under the pulling force effect of flexible member;
8) after frame before pouch and the complete purse up of after-frame close, the pouch disconnecting means of controller control afterbody framework opens the keying plate on the moulding of framework left and right, now, the front frame being full of the pouch of catches departs from guide groove after framework, pouch and framework apart, fishing boat relies on strand guiding principle tow back to pouch and be promoted to deck with winch, complete the recovery operation of second pouch, equally, towed speed readjusted by fishing boat, guarantee that towing is stable, do not affect fishing operation;
9) the like, all the other pouches can be reclaimed by same mode and extract;
10) last pouch is collected together with trawlnet.
The invention has the beneficial effects as follows: trawlnet uses the net capsule be composed in series by multiple pouch headtotail, the catches that trawlnet is caught can be collected in corresponding pouch in batches and to depart from body towing with pouch and be promoted on fishing boat, the catches solved because catching during long-time trawlnet extrude in net capsule, abrade or problem that death is even gone bad, improve the survival rate of catches and fresh and alive quality, gradation is extracted and the lighter pouch also corresponding power alleviating fishing boat winch.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the schematic diagram of afterbody pouch when closing.
Schematic diagram when Fig. 3 is afterbody pouch disengaging body and collects.
Fig. 4 is the frame structure schematic diagram in Fig. 1.
Fig. 5 is mount structure schematic diagram before the pouch in Fig. 1.
1. wings, 2. body in figure, 3. net capsule, 31. frameworks, 311. upper frame bars, 312 times mouldings, 313. left mouldings, 314. right mouldings, 315. front guide slot, guide groove after 316., 317. open and close plate, 32. pouches, frame before 321., 3211. cross bars, 3212. vertical poles, 322. after-frames, 323. strand guiding principles.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: the trawlnet with serial many groups pouch of the present embodiment, for the operation that drags a net in fishing of fishing boat, as shown in Figure 1, trawlnet comprises wing 1, body 2 and net capsule 3, wing is connected be connected with fishing boat drag guiding principle 11, net capsule is installed on body rear end and is connected with body, and net capsule comprises:
Four pouches 32, for splendid attire catches, pouch headtotail is connected in series in body rear end, the front end pouch mouth of pouch is designed with front frame 321, the rear end pouch mouth of pouch is designed with after-frame 322, the catches that front frame and after-frame form pouch are imported and exported, and each pouch is all provided with the strand guiding principle 323 be connected with fishing boat, the outer surface of front frame and after-frame is all covered with the smooth soft rubber layer of one deck;
Three frameworks 31, be arranged between corresponding pouch respectively, for the connection before the after-frame of previous pouch and a rear pouch between frame, framework is provided with the front and back frame opening and closing device of corresponding pouch and pouch disconnecting means and corresponding controller, multiple framework and pouch are interconnected to form the net capsule of series connection bag type paste, are covered with the smooth soft rubber layer of one deck at the outer surface of framework;
Front and back frame opening and closing device, is installed in framework, is used to open or close pouch mouth;
Pouch disconnecting means, is installed in framework, controls the disengaging of pouch and body;
Controller, the information signal of the fishery harvesting quantity monitoring parametric controller transmission in timing or wireless receiving fishing boat controls front and back frame opening and closing device and pouch disconnecting means;
As shown in Figure 4, framework is rectangular, comprise interconnective upper and lower moulding and left and right moulding, the medial surface of left and right moulding is designed with guide groove, guide groove comprises the front guide slot 315 and rear guide groove 316 that are parallel to each other, the after-frame of previous pouch to be installed in front guide slot and can to slide along front guide slot, and the front frame of a rear pouch to be installed in rear guide groove and can to slide along rear guide groove, and the front and back frame opening and closing device of corresponding pouch and pouch disconnecting means and controller are installed in the lower moulding of framework, as shown in Figure 5, the front frame of pouch is identical with rear frame structure, all rectangular shape, front frame comprises interconnective upper sheer pole 3211 and left and right vertical pole 3212, the width of cross bar length and framework matches, vertical pole is telescopic caulking gum bellows, rubber bellows is designed with tracheae, tracheae is communicated with corresponding controllers, vertical pole top and cross tube end affixed, affixed with sheer pole end bottom vertical pole, also flexible member is installed in the hollow cavity of rubber bellows, flexible member is spring, one end of spring is connected with cross tube end, the other end is connected with sheer pole end, the length when drift of spring and vertical pole purse up matches, before and after frame opening and closing device comprise high pressure gas holder as power source and control valve, control valve is controlled by corresponding controllers, and the gas in high pressure gas holder is communicated with corresponding rubber bellows by control valve, pouch disconnecting means comprises the keying plate 317 of design guide groove side on the moulding of left and right and after capping, open and close plate to be controlled to open or close by controller, front frame when the length of keying plate and purse up state or the vertical pole length of after-frame match, when opening and closing plate and opening, the side opening of rear guide groove, before being installed in the pouch in purse up shape on rear guide groove, frame departs from rear guide groove, and drive pouch and framework apart, before pouch after disengaging frame continue due to the active force of spring purse up close, pouch is now pulled by twisting guiding principle accordingly and is reclaimed by fishing boat winch and carry to deck, when keying plate is closed, then guide groove side is closed again.
Trawl fishing method with serial many groups pouch is, first the trawl fishing towing time setting each framework internal controller also sets the separation time of corresponding pouch respectively, the fishing operation time is decided to be 4 hours, pouch collects catches and the time departed from is decided to be 1 hour, four pouch separation times stagger mutually, then four front frames of pouch are installed in the rear guide groove in corresponding frame respectively, and the after-frame of first three pouch is installed in the front guide slot of associated frame members, composition like this is organized net capsule that pouch headtotail is series-like more and is connected to the rear end of body, winch is slowly by trawlnet submerged, starting fishing boat makes trawl board drive trawlnet wing to open to both sides drift, trawlnet starts to pull fishing operation, now, the front and back frame opening and closing device of each pouch of controller opens, in the rubber bellows that gas in high pressure gas holder is filled with in the frame vertical pole of front and back, the front and back pouch mouth making sheer pole separately form expansion is stretched at the promotion lower vertical bar of gas, as shown in Figure 2, continued to enter by each framework and each pouch successively by the catches that trawlnet is caught and accumulate in the pouch of net capsule afterbody, operation is carried out after 1 hour, more catches have been have collected in pouch, or according to catch monitor supervision platform transmission have enough catches information, controller in net capsule afterbody framework cuts out the front frame of afterbody pouch, close the after-frame of previous pouch simultaneously, front and back frame returns back to rapidly purse up state under the pulling force effect of spring, after when the after-frame of frame and previous pouch before afterbody pouch, purse up closes all completely, controller can control pouch disconnecting means and open keying plate framework left and right moulding covered on rear guide groove, the front frame being full of the afterbody pouch of catches will depart from guide groove after framework, drive pouch and framework apart, as shown in Figure 3, fishing boat relies on corresponding strand guiding principle tow back to separately the pouch in free floating shape and be promoted to deck with winch, now, namely the recovery operation of first pouch is completed, simultaneously, towed speed readjusted by fishing boat, guarantee that towing is stable, do not affect continuation fishing operation, residue pouch headtotail forms new net capsule, the catches that trawlnet is caught again are continued to enter by each pouch of residue and are built up in afterbody pouch, operation is carried out after 1 hour again, have collected more catches in afterbody pouch, the like, all the other two pouches can be reclaimed by same mode and extract, last pouch then can be extracted and reclaim together with trawlnet, complete the fishing operation when time trawlnet, each framework can be retracted together with corresponding pouch, certainly, controller in each framework also can arrange radio receiver, the opening and closing of front and back frame and the disengaging of pouch can be controlled by signal instruction on real-time reception fishing boat, to adapt to the fishing operation under different situations.
Embodiment 2: the trawlnet with serial many groups pouch of the present embodiment 2, comprise wing, body and net capsule, wing is connected be connected with fishing boat drag guiding principle, net capsule is installed on body rear end and is connected with body, before pouch frame and after-frame vertical pole in all telescopic cylinder is installed, telescopic cylinder is connected with corresponding controllers, when needing to open frame and after-frame before pouch, controller controls telescopic cylinder top and stretches, cylinder overcomes the pulling force of the spring in vertical pole and drives vertical pole to stretch, the upper sheer pole of front frame and after-frame separately forms the pouch mouth of expansion, the catches that trawlnet is caught enter pouch by framework and collect, as needed to reset, then controller controls telescopic cylinder retraction, drive cross tube resets, simultaneously, vertical pole is purse up under the action of the spring, enclosure pouches mouth, the other parts of the present embodiment 2 all with the appropriate section of embodiment 1 roughly the same, repeat no more herein.
In describing the invention, technical term " on ", D score, " front ", " afterwards ", " left side ", " right side ", " indulge ", " horizontal stroke ", " interior ", " outward " etc. represent that direction or position relationship are based on direction shown in the drawings or position relationship, be only for convenience of description with understanding technical scheme of the present invention, more than illustrate and not restriction has been done to the present invention, the present invention is also not limited only to the citing of above-mentioned explanation, the change that those skilled in the art make in essential scope of the present invention, remodeling, increase or replace, all protection scope of the present invention should be considered as.
Claims (8)
1. the trawlnet with serial many groups pouch, for the operation that drags a net in fishing of fishing boat, described trawlnet comprises wing (1), body (2) and net capsule (3), described wing be provided be connected with fishing boat drag guiding principle (11), described net capsule is located at body rear end and is connected with body, it is characterized in that: described net capsule comprises some pouches (32), for splendid attire catches, multiple pouch headtotail is connected in series in body rear end, the front end pouch mouth of pouch is provided with front frame (321), the rear end pouch mouth of pouch is provided with after-frame (322), front frame and after-frame form the import and export of pouch, each pouch is equipped with the strand guiding principle (323) be connected with fishing boat, some frameworks (31), framework is located between two pouches, for the connection before the after-frame of previous pouch and a rear pouch between frame, framework is provided with the front and back frame opening and closing device of corresponding pouch and pouch disconnecting means and corresponding controller, and multiple framework and pouch are interconnected to form the net capsule of many group series connection bag type pastes, front and back frame opening and closing device, is located in framework, for opening and closing corresponding front frame and after-frame, pouch disconnecting means, is located in framework, controls the disengaging of pouch and framework, controller, for receiving the information signal of the fishery harvesting quantity monitoring parametric controller transmission on fishing boat and controlling front and back frame opening and closing device and pouch disconnecting means,
The front frame of described pouch is identical with rear frame structure, all rectangular shape, front frame comprises interconnective upper sheer pole (3211) and left and right vertical pole (3212), the width of described cross bar length and described framework matches, vertical pole is the Collapsible structure of hollow, top and the cross tube end of vertical pole are affixed, bottom and the sheer pole end of vertical pole are affixed, also flexible member is respectively equipped with between the both ends of upper sheer pole, one end of described flexible member is connected with cross tube end, the other end is connected with sheer pole end, the drift of flexible member and the purse up length of vertical pole match,
The rectangular shape of described framework, comprise interconnective upper and lower moulding (311,312) and left and right moulding (313,314), the medial surface of described left and right moulding is respectively equipped with guide groove, described guide groove comprises the front guide slot (315) and rear guide groove (316) that are parallel to each other, the after-frame of previous pouch is installed in described front guide slot and also can slides along front guide slot, the front frame of a rear pouch to be installed in described rear guide groove and can to slide along rear guide groove, and described front and back frame opening and closing device and pouch disconnecting means and controller are all located in the lower moulding of framework.
2. the trawlnet with serial many groups pouch according to claim 1, is characterized in that: the outer surface of described framework, front frame and after-frame is all covered with the smooth soft rubber layer of one deck.
3. the trawlnet with serial many groups pouch according to claim 1, is characterized in that: described vertical pole (3212) is telescopic caulking gum bellows, and described rubber bellows is provided with tracheae, and described tracheae is communicated with corresponding controllers.
4. the trawlnet with serial many groups pouch according to claim 3, is characterized in that: described flexible member is located in the hollow cavity of described rubber bellows.
5. the trawlnet with serial many groups pouch according to claim 1, is characterized in that: described vertical pole is provided with telescopic cylinder in (3212), and described telescopic cylinder is connected with corresponding controllers.
6. the trawlnet with serial many groups pouch according to claim 3 or 4 or 5, it is characterized in that: described front and back frame opening and closing device comprises high pressure gas holder as power source and corresponding control valve, described control valve is controlled by controller, and described high pressure gas holder is communicated with corresponding rubber bellows or telescopic cylinder by control valve.
7. the trawlnet with serial many groups pouch according to claim 1, it is characterized in that: described pouch disconnecting means comprises the left and right moulding (313 being located at described framework respectively, 314) the keying plate (317) of guide groove (316) sidewall and after capping, described keying plate is controlled by controller, when keying plate is opened, the upper side of rear guide groove is opened, before being installed in the pouch of rear guide groove, frame departs from rear guide groove, and drive pouch and framework apart, before pouch after disengaging, frame closes owing to continuing purse up under the retraction force effect of flexible member, pouch is now pulled by twisting guiding principle accordingly and is reclaimed by fishing boat winch and be promoted to deck, when keying plate is closed, then, guide groove side is closed again.
8., based on the trawl fishing method with serial many groups pouch of claim 1, its step is as follows:
1) controller in each framework all sets the trawl fishing towing time and the separation time of corresponding distribution pouch, frame and after-frame before multiple pouch are installed in respectively in corresponding framework guide groove, multiple pouch forms the net capsule that is end-to-end in series-like and is connected to body rear end;
2) trawlnet is put into water, start fishing boat and trawlnet is opened start to pull fishing operation;
3) controller starts the front and back frame opening and closing device of corresponding frame, gases at high pressure are made to be filled with rubber bellows in vertical pole or telescopic cylinder, vertical pole extending forwards also makes sheer pole separately form the pouch mouth of expansion, now, the pouch of multiple headtotail series connection forms through net capsule, is built up in the pouch of net capsule afterbody through multiple framework and corresponding pouch mouth by the catches that trawlnet is caught;
4) controller in net capsule afterbody framework obtains fishery harvesting quantity monitor message signal from fishing boat, judge that the pouch inner accumulated of net capsule afterbody has the fixing separation time of enough catches or afterbody pouch to arrive, controller then now in net capsule afterbody framework cuts out front frame and the after-frame of corresponding pouch by front and back frame opening and closing device, front frame and after-frame return back to purse up state under the pulling force effect of flexible member;
5) after frame before pouch and the complete purse up of after-frame close, the pouch disconnecting means of controller control afterbody framework opens the keying plate on the moulding of framework left and right, now, the front frame being full of the afterbody pouch of catches departs from guide groove after framework, afterbody pouch and afterbody framework apart, fishing boat relies on strand guiding principle tow back to pouch in time and be promoted to deck with winch, complete the recovery operation of first pouch, meanwhile, towed speed readjusted by fishing boat, guarantee that towing is stable, do not affect fishing operation;
6) remain pouch headtotail and form new net capsule, now built up in the afterbody pouch of new net capsule by the catches that trawlnet is caught;
7) when afterbody pouch inner accumulated has the separation time of enough catches or afterbody pouch to arrive, controller then now in net capsule afterbody framework by front and back frame opening and closing device close corresponding before frame and after-frame, front frame and after-frame return back to purse up state under the pulling force effect of flexible member;
8) after frame before pouch and the complete purse up of after-frame close, the pouch disconnecting means of controller control afterbody framework opens the keying plate on the moulding of framework left and right, now, the front frame being full of the pouch of catches departs from guide groove after framework, pouch and framework apart, fishing boat relies on strand guiding principle tow back to pouch in time and be promoted to deck with winch, complete the recovery operation of second pouch, equally, towed speed readjusted by fishing boat, guarantee that towing is stable, do not affect fishing operation;
9) the like, all the other pouches can be reclaimed by same mode and extract;
10) last pouch is collected together with trawlnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407953.5A CN103478088B (en) | 2013-09-09 | 2013-09-09 | Dragnet with a plurality of serial bags and fishing method using dragnet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310407953.5A CN103478088B (en) | 2013-09-09 | 2013-09-09 | Dragnet with a plurality of serial bags and fishing method using dragnet |
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| CN103478088A CN103478088A (en) | 2014-01-01 |
| CN103478088B true CN103478088B (en) | 2015-07-01 |
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| CN106386720A (en) * | 2016-06-10 | 2017-02-15 | 林力苹 | Aquatic fishing device |
| CN108609122B (en) * | 2016-12-01 | 2019-12-24 | 浙江海洋大学 | Fishing boat trawl device |
| CN109392853A (en) * | 2018-11-19 | 2019-03-01 | 中国科学院南京地理与湖泊研究所 | Automate fish electric fishing science investigation apparatus |
| CN112956454B (en) * | 2019-09-29 | 2022-03-29 | 浙江海洋大学 | Operation method for nested separated fishing catch object and capable of falling off trawl bag |
| CN112005972B (en) * | 2020-08-18 | 2022-03-29 | 浙江海洋大学 | Tortoise removing trawl net structure with camera device |
| CN111972361B (en) * | 2020-09-01 | 2022-04-29 | 中国水产科学研究院南海水产研究所 | Marine nuclear power station intake shrimp interception net |
| CN112450164B (en) * | 2020-11-03 | 2022-09-23 | 中国水产科学研究院南海水产研究所 | Trawl frame capable of intelligently adjusting hauling net |
| 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 |
| CN113525611A (en) * | 2021-08-19 | 2021-10-22 | 青岛智汇港创新科技有限公司 | Anti-abrasion method for trawl fishing of fishing boat |
| CN114097719A (en) * | 2021-11-08 | 2022-03-01 | 刘波 | Auxiliary net hauling device of fishing boat net hauler |
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| US1548942A (en) * | 1924-05-28 | 1925-08-11 | Norris Castine | Fish net |
| RU2007076C1 (en) * | 1991-05-24 | 1994-02-15 | Михальчук Петр Григорьевич | Trawl for catching hydrobionts |
| FR2697969A1 (en) * | 1992-11-19 | 1994-05-20 | Inst Fs Rech Expl Mer | Closure appts. for trawler net - uses parachute released by acoustic signal from trawler to tighten rope round net and form net pocket |
| JP2599190B2 (en) * | 1988-12-12 | 1997-04-09 | ニチモウ株式会社 | Troll operation method and device |
| RU2129783C1 (en) * | 1995-08-21 | 1999-05-10 | Акционерное общество открытого типа "Преображенская база тралового флота" | Rope pelagic trawl |
| JP3106312U (en) * | 2004-07-01 | 2004-12-16 | ニュートン株式会社 | Fishing net for bottom fishing. |
| CN203505350U (en) * | 2013-09-09 | 2014-04-02 | 浙江海洋学院 | Dragnet with multiple groups of serial bags |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008029533A1 (en) * | 2006-09-06 | 2008-03-13 | National University Corporation Tokyo University Of Marine Science And Technology | Net mouth inclination keeping type trawl net fishery system |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191209106A (en) * | 1912-04-17 | 1913-04-10 | Richard Adolph Herrmann Koch | Improvements in and relating to Trawling Nets. |
| US1548942A (en) * | 1924-05-28 | 1925-08-11 | Norris Castine | Fish net |
| JP2599190B2 (en) * | 1988-12-12 | 1997-04-09 | ニチモウ株式会社 | Troll operation method and device |
| RU2007076C1 (en) * | 1991-05-24 | 1994-02-15 | Михальчук Петр Григорьевич | Trawl for catching hydrobionts |
| FR2697969A1 (en) * | 1992-11-19 | 1994-05-20 | Inst Fs Rech Expl Mer | Closure appts. for trawler net - uses parachute released by acoustic signal from trawler to tighten rope round net and form net pocket |
| RU2129783C1 (en) * | 1995-08-21 | 1999-05-10 | Акционерное общество открытого типа "Преображенская база тралового флота" | Rope pelagic trawl |
| JP3106312U (en) * | 2004-07-01 | 2004-12-16 | ニュートン株式会社 | Fishing net for bottom fishing. |
| CN203505350U (en) * | 2013-09-09 | 2014-04-02 | 浙江海洋学院 | Dragnet with multiple groups of serial bags |
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| Publication number | Publication date |
|---|---|
| CN103478088A (en) | 2014-01-01 |
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