CN103947617A - Bottom trawl - Google Patents
Bottom trawl Download PDFInfo
- Publication number
- CN103947617A CN103947617A CN201410142438.3A CN201410142438A CN103947617A CN 103947617 A CN103947617 A CN 103947617A CN 201410142438 A CN201410142438 A CN 201410142438A CN 103947617 A CN103947617 A CN 103947617A
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- China
- Prior art keywords
- trawl
- otter
- organisms
- substrate
- infraclass
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Mechanical Means For Catching Fish (AREA)
Abstract
The invention discloses a bottom trawl. The technical scheme of the bottom trawl is that the bottom trawl comprises net clothes and a foot line connected to the net opening of the net clothes, wherein the foot line is provided with a water flow disturbing device used for stirring a substrate through water flow to fulfill the aim of disturbing benthic fisheries organisms. The water flow disturbing device is arranged on the foot line to generate high-pressure water flow to stir the substrate and fulfill the aim of disturbing benthic fisheries organisms, so that the bottom trawl is much different from the traditional foot line which scrapes the substrate to disturb and disturbs the benthic fisheries organisms by means of water flow stirring, so that the hurt to the organisms is low, young organisms are prevented from being hurt, sustainable development is guaranteed, the bottom trawl is friendly to biological environment, the substrate is prevented from being damaged, the disturbing effect is much higher than that of the pure foot line disturbance, the fishing amount is improved, and the economic benefit is further improved. The bottom trawl is suitable for fishing bottom layer benthic fisheries organisms, according to the concept of sustainable development, the economic benefit can be greatly improved, an environment is benefited, and the bottom trawl has good market prospect.
Description
Technical field
The present invention relates to fishery field, more particularly, it relates to a kind of otter-trawl.
Background technology
Trawlnet is the motion that utilizes boats and ships, and towing fishing gear advances in seabed or seawater, forces fishing gear to fish for object through the fish shrimp crab in waters etc. and enters net capsule, reaches the object of fishing for, and otter-trawl is wherein a kind of.
Otter-trawl mainly fish for to as if the end of the bottom fisheries biology of dwelling, because its object of fishing for mostly is the kind that economic worth is higher (as shrimps), therefore otter-trawl is one of the most popular fishing gear of using of current marine fishing, and its fishery output accounts for nearly 50% left and right of total fishery output.
But there is following shortcoming in existing otter-trawl: 1) infraclass be absorbed in bed mud or at the bottom of hard scraping destroy bottom environment; 2) infraclass easy damaged shrimps health; 3) fishing boat towrope resistance is large, increases diesel consumption.Otter-trawl in sum, to environment and biological unfriendly, economic benefit is low.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of to environment and biological close friend and the high otter-trawl of economic benefit.
For achieving the above object, the invention provides following technical scheme:
A kind of otter-trawl, comprises etting and is connected in the infraclass at the network interface place of etting, and described infraclass is provided with for stirs substrate by current and alarms device to reach the dwell current of fisheries biology object of the agitation end.
By adopting technique scheme; in infraclass, current agitation device is set; produce High-Pressure Water by it; substrate is stirred; the dwell object of fisheries biology of the end that reaches agitation bottom; greatly be different from traditional infraclass scraping agitation, by the method for current disturbance, low to biological injury; protect immature biology to preserve from; ensure sustainable development, to biotic habitat close friend, and protect substrate not to be damaged; and compare simple infraclass agitation; agitation effect improves greatly, thereby improves amount of fishing, and then increases economic efficiency.
The present invention is further set to: described current agitation device comprises outlet component and for driving the driven unit of outlet component output current.
By adopting technique scheme, driven unit is responsible for outlet component hydraulic pressure is provided, and drives outlet component work output High-Pressure Water, and co-ordination, realizes by current and stir substrate, the dwell object of fisheries biology of the agitation end.
The present invention is further set to: described outlet component comprises body, and described body is connected with infraclass, is provided with the connected chamber being communicated with the output of driven unit in described body, and with the apopore of connected chamber conducting.
By adopting technique scheme, the output output hydraulic pressure of driven unit, inputs in connected chamber, then sprays by apopore, and substrate is carried out to disturbance, and structure arranges simple and convenient, and disturbance is targeted, alarms effective.
The present invention is further set to: the sidewall of described body arranges multiple apopores vertically.
By adopting technique scheme, at the sidewall of body, multiple apopores are set, regioselectivity is wide, easy to process, can produce multiply High-Pressure Water, and substrate is stirred, and alarms effective.
The present invention is further set to: described apopore is all obliquely installed towards front lower place.
By adopting technique scheme, the current of multiply high pressure, from each apopore ejection, because apopore is all obliquely installed towards front lower place, before infraclass and etting skim over, the biology of front substrate is alarmed, its probability larger after jumping out from sandstone is directly entered in etting, and be hunted down, alarm effective, improve amount of fishing remarkable.
The present invention is further set to: described body is provided with roller.
By adopting technique scheme, roller can be converted into roller friction by the sliding friction dragging in process, greatly reduces towrope resistance, reduces the diesel consumption of fishing boat, also prevent simultaneously the process middle tube body of pulling be absorbed in bed mud or at the bottom of hard scraping destroy bottom environment, to biotic habitat close friend.
The present invention is further set to: described body is provided with multiple rollers vertically.
By adopting technique scheme, the gravity that multiple rollers effectively disperse body to be subject to, reduces the part scraping to substrate, stressed even, makes to pull also more smooth simultaneously.
The present invention is further set to: described driven unit comprises water pump, and described water delivery side of pump is connected with connected chamber.
By adopting technique scheme, water pump is the most frequently used liquid supercharging equipment, and cost is low, arranges easyly, and its output output High-Pressure Water injects in connected chamber, from apopore ejection multiply High-Pressure Water, alarms effective, economical and practical.
The present invention is further set to: described water pump is arranged on the end of body.
By adopting technique scheme, the setting of water pump takies certain volume, arranges in body end, at utmost reserve the space of body top network interface, increase amount of fishing, the injury of simultaneously avoiding water pump may exist the biology entering from network interface after alarming, to biotic habitat close friend.
The present invention is further set to: the two ends of described body are equipped with water pump.
By adopting technique scheme, water pump is all set at two ends, balance body, and be the reliable highly pressurised liquid of input constantly of connected chamber, make its work more stable.
Brief description of the drawings
Fig. 1 is the structural representation of otter-trawl embodiment of the present invention;
Fig. 2 is the outlet component structural representation of otter-trawl embodiment of the present invention;
Fig. 3 is the infraclass structural representation of otter-trawl embodiment of the present invention.
Description of reference numerals: 1, etting; 11, network interface; 12, exaggerated; 13, infraclass; 2, current agitation device; 21, outlet component; 211, body; 2111, apopore; 22, driven unit; 221, water pump; 3, roller; 4, float; 5, partition.
Embodiment
Referring to figs. 1 through Fig. 3, otter-trawl embodiment of the present invention is described further.
A kind of otter-trawl, comprises etting 1 and is connected in the infraclass 12 at network interface 11 places of etting 1, and described infraclass 12 is provided with for stirs substrate by current and alarms device 2 to reach the dwell current of fisheries biology object of the agitation end.
By adopting technique scheme; in infraclass 12, current agitation device 2 is set; produce High-Pressure Water by it; substrate is stirred; the dwell object of fisheries biology of the end that reaches agitation bottom; greatly be different from traditional infraclass scraping agitation, by the method for current disturbance, low to biological injury; protect immature biology to preserve from; ensure sustainable development, to biotic habitat close friend, and protect substrate not to be damaged; and comparing simple infraclass 12 alarms; agitation effect improves greatly, thereby improves amount of fishing, and then increases economic efficiency.
Described current agitation device 2 comprises outlet component 21 and for driving outlet component 21 to export the driven unit 22 of current.
By adopting technique scheme, driven unit 22 is responsible for outlet component 21 hydraulic pressure is provided, and drives outlet component 21 work output High-Pressure Waters, and co-ordination, realizes by current and stir substrate, the dwell object of fisheries biology of the agitation end.
Described outlet component 21 comprises body 211, and described body 211 is connected with infraclass 12, in described body 211, is provided with the connected chamber being communicated with the output of driven unit 22, and with the apopore 2111 of connected chamber conducting.
It should be noted that herein, the variation of outlet component 21 is various, its central idea is to make the design that cost performance is the highest under the condition that minimizes cost and the damage to substrate, biology, certainly the present invention is not limited only to the outlet component 21 of this structure, be set to connected chamber and the apopore 2111 of threeway, four-way or more connected chambers and three dimensions staggered designs, also can reach agitation effect (as snakelike, spirally coiled or other how much or irregular shape all can).
By adopting technique scheme, the output output hydraulic pressure of driven unit 22, inputs in connected chamber, then sprays by apopore 2111, and substrate is carried out to disturbance, and structure arranges simple and convenient, and disturbance is targeted, alarms effective.
The sidewall of described body 211 arranges multiple apopores 2111 vertically.
By adopting technique scheme, at the sidewall of body 211, multiple apopores 2111 are set, regioselectivity is wide, easy to process, can produce multiply High-Pressure Water, and substrate is stirred, and alarms effective.
Described apopore 2111 is all obliquely installed towards front lower place.
By adopting technique scheme, the current of multiply high pressure, spray from each apopore 2111, because apopore 2111 is all obliquely installed towards front lower place, before infraclass 12 and etting 1 skim over, the biology of front substrate is alarmed, its probability larger after jumping out from sandstone is directly entered in etting 1, and be hunted down, alarm effective, improve amount of fishing remarkable.
Described body 211 is provided with roller 3.
By adopting technique scheme, roller 3 can be converted into roller 3 and rubs dragging sliding friction in process, greatly reduce towrope resistance, reduce the diesel consumption of fishing boat, also prevent simultaneously pull that process middle tube body 211 is absorbed in bed mud or at the bottom of hard scraping destroy bottom environment, to biotic habitat close friend.
Described body 211 is provided with multiple rollers 3 vertically.
By employing technique scheme, the gravity that multiple rollers 3 effectively disperse body 211 to be subject to, reduces the part scraping to substrate, stressed even, makes to pull also more smooth simultaneously.
Described driven unit 22 comprises water pump 221, and the output of described water pump 221 is connected with connected chamber.
It should be noted that herein, driven unit 22 is not limited only to be set to water pump 221, other structure and equipment that can increase hydraulic pressure output also can replace, such as being set to conflux and the structure of water conservancy diversion (infundibulate that side direction is placed, and by its delivery outlet connected chamber), the pressure current in seabed is guided to body 211 inside, and then spray High-Pressure Water from apopore 2111, reach the effect of agitation, but this is equivalent to the energy consumption that pulls boats and ships to be converted into hydraulic energy, will increases oil consumption.
By adopting technique scheme, water pump 221 is the most frequently used liquid supercharging equipments, and cost is low, arranges easyly, and its output output High-Pressure Water injects in connected chamber, sprays multiply High-Pressure Water from apopore 2111, alarms effective, economical and practical.
Described water pump 221 is arranged on the end of body 211.
By adopting technique scheme, the setting of water pump 221 takies certain volume, arrange in body 211 ends, at utmost reserve the space of body 211 top network interfaces 11, increase amount of fishing, the injury that the biology entering from network interface 11 after simultaneously avoiding water pump 221 to agitation may exist, to biotic habitat close friend.
The two ends of described body 211 are equipped with water pump 221.
By adopting technique scheme, water pump 221 is all set at two ends, balance body 211, and be the reliable highly pressurised liquid of input constantly of connected chamber, make its work more stable.
Concrete, with the etting 1 of traditional otter-trawl and to be connected to the accessory structure at network interface 11 places of etting 1 substantially similar, accessory comprises exaggerated 12 and infraclass 12, body 211 is arranged on the front of infraclass 12, the two ends of its two ends and infraclass 12 are fixed, body 211 can be made the steel pipe that diameter is 35mm by steel, the cylindrical roller 3 of the polyethylene material that a diameter is 100mm is installed every 400mm on steel pipe, the both sides of roller 3 grip with partition 5, limit its position, apopore 2111 is set to the circular hole that diameter is 5mm, and be arranged in the middle of two adjacent rollers 3, the oblique front lower place of perforate direction, eject High-Pressure Water for alarming the biology of dwelling in substrate at the end towards substrate, destructiveness to bottom soil is little, the water pump 221 that steel pipe two ends are being fixedly connected with, consider the size of the power of pulling, preferably be set to small pump 221, can be connected to the regulated power supply on boats and ships by seawater cables, or carry portable charged power supply and also can, simultaneously, in order further to reduce the destructiveness to bottom soil, to the dwell mechanical damage degree of fishery harvesting biology of the end, and towrope resistance, oil consumption, the cylindrical roller 3 of same structure is installed in infraclass 12, and float 4 is set on exaggerated 12, also can further address the above problem.
Claims (10)
1. an otter-trawl, comprises etting and is connected in the infraclass at the network interface place of etting, it is characterized in that: described infraclass is provided with for stirring substrate by current to reach the dwell current agitations device of fisheries biology object of the agitation end.
2. otter-trawl according to claim 1, is characterized in that: described current agitation device comprises outlet component and for driving the driven unit of outlet component output current.
3. otter-trawl according to claim 2, is characterized in that: described outlet component comprises body, and described body is connected with infraclass, is provided with the connected chamber being communicated with the output of driven unit in described body, and with the apopore of connected chamber conducting.
4. otter-trawl according to claim 3, is characterized in that: the sidewall of described body arranges multiple apopores vertically.
5. otter-trawl according to claim 4, is characterized in that: described apopore is all obliquely installed towards front lower place.
6. according to the otter-trawl described in claim 3 or 4 or 5, it is characterized in that: described body is provided with roller.
7. otter-trawl according to claim 6, is characterized in that: described body is provided with multiple rollers vertically.
8. otter-trawl according to claim 7, is characterized in that: described driven unit comprises water pump, and described water delivery side of pump is connected with connected chamber.
9. otter-trawl according to claim 8, is characterized in that: described water pump is arranged on the end of body.
10. otter-trawl according to claim 9, is characterized in that: the two ends of described body are equipped with water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410142438.3A CN103947617A (en) | 2014-04-10 | 2014-04-10 | Bottom trawl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410142438.3A CN103947617A (en) | 2014-04-10 | 2014-04-10 | Bottom trawl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103947617A true CN103947617A (en) | 2014-07-30 |
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ID=51325092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410142438.3A Pending CN103947617A (en) | 2014-04-10 | 2014-04-10 | Bottom trawl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103947617A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110750900A (en) * | 2019-10-18 | 2020-02-04 | 上海海洋大学 | Method for estimating shape of middle layer trawl net in operation process |
| CN112790167A (en) * | 2019-11-13 | 2021-05-14 | 余添枝 | Round trawl net |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11512932A (en) * | 1996-07-22 | 1999-11-09 | スキッパー・エレクトロニクス・エー・エス | Fishing nets and acoustic emitters therefor |
| NO311864B1 (en) * | 2000-09-07 | 2002-02-11 | Remoey Sea Group As | roller weight |
| NL1030878C1 (en) * | 2006-01-10 | 2006-05-24 | Lukas Joannes Harmann Hijlkema | Fishing gear for bottom trawling, has net held open by beam attached to shoes on rollers |
| CN101112192A (en) * | 2007-08-31 | 2008-01-30 | 浙江省海洋水产养殖研究所 | Device for catching plankton |
| CN201602060U (en) * | 2009-11-30 | 2010-10-13 | 中国水产科学研究院东海水产研究所 | Foot line of energy-saving and environment-friendly bottom trawl |
| CN103444666A (en) * | 2012-06-01 | 2013-12-18 | 福建省丰盛食品有限公司 | Novel net for catching Venerupis philippinarum |
| CN203798931U (en) * | 2014-04-11 | 2014-08-27 | 辽宁工业大学 | Airborne antenna lighting effect test system |
-
2014
- 2014-04-10 CN CN201410142438.3A patent/CN103947617A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11512932A (en) * | 1996-07-22 | 1999-11-09 | スキッパー・エレクトロニクス・エー・エス | Fishing nets and acoustic emitters therefor |
| NO311864B1 (en) * | 2000-09-07 | 2002-02-11 | Remoey Sea Group As | roller weight |
| NL1030878C1 (en) * | 2006-01-10 | 2006-05-24 | Lukas Joannes Harmann Hijlkema | Fishing gear for bottom trawling, has net held open by beam attached to shoes on rollers |
| CN101112192A (en) * | 2007-08-31 | 2008-01-30 | 浙江省海洋水产养殖研究所 | Device for catching plankton |
| CN201602060U (en) * | 2009-11-30 | 2010-10-13 | 中国水产科学研究院东海水产研究所 | Foot line of energy-saving and environment-friendly bottom trawl |
| CN103444666A (en) * | 2012-06-01 | 2013-12-18 | 福建省丰盛食品有限公司 | Novel net for catching Venerupis philippinarum |
| CN203798931U (en) * | 2014-04-11 | 2014-08-27 | 辽宁工业大学 | Airborne antenna lighting effect test system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110750900A (en) * | 2019-10-18 | 2020-02-04 | 上海海洋大学 | Method for estimating shape of middle layer trawl net in operation process |
| CN110750900B (en) * | 2019-10-18 | 2024-01-26 | 上海海洋大学 | Method for estimating middle layer trawl net tool shape in operation process |
| CN112790167A (en) * | 2019-11-13 | 2021-05-14 | 余添枝 | Round trawl net |
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Application publication date: 20140730 |