CN209185450U - A kind of combined bio trawling gear - Google Patents
A kind of combined bio trawling gear Download PDFInfo
- Publication number
- CN209185450U CN209185450U CN201822028042.2U CN201822028042U CN209185450U CN 209185450 U CN209185450 U CN 209185450U CN 201822028042 U CN201822028042 U CN 201822028042U CN 209185450 U CN209185450 U CN 209185450U
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- China
- Prior art keywords
- component
- trawlnet
- net capsule
- fixed frame
- combined bio
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Abstract
The utility model relates to a kind of combined bio trawling gears, including the preceding trawlnet component being set-located from the inside to the outside, middle trawlnet component and rear dragging screen component, and middle trawlnet component includes at least one, preceding trawlnet component, middle trawlnet component and rear dragging screen component respectively include fixed frame and the net capsule for being mounted on fixed frame rear end, and the side plate of fixed frame front end two sides is set, the strip-shaped hole of correspondence is provided on each side plate of preceding trawlnet component and middle trawlnet component, connecting plate corresponding with strip-shaped hole is provided on the side plate of rear dragging screen component, connecting plate is from rear to the preceding strip-shaped hole sequentially passed through on middle trawlnet component and preceding trawlnet component side plate and extends on front side of preceding trawlnet component, the drawstring extended on the outside of fixed frame from net capsule bottom is provided in net capsule.
Description
Technical field
The utility model relates to marine fishery Fishing technology fields, and in particular to a kind of combined bio trawling gear.
Background technique
Trawlnet is the movement using ship, and towing fishing gear advances in seabed or seawater, forces fishing gear by waters
The fished species such as fish shrimp crab enter net capsule, achieve the purpose that fishing.In addition to this, planktonic organism, marine benthos acquisition or
Seabottom geology prospecting, ecology investigation etc. can use the trawlnet of different structure.
For the fishing of aquatic products, the net capsule that single specification is usually used in traditional mode is caught, and is led in this way
Causing variety classes or the fisher of size, all accumulation together, when taking out, is needed manually gradually to rout up net capsule, not only be made
It needs manually to classify one by one at the anti-cumbersome of the process of taking-up, and after taking out, using being inconvenient.
And combined type net capsule is the fixed structure of integral type in the prior art, not easy cleaning and replacement.
Utility model content
The purpose of the utility model is to provide a kind of combined bio trawling gears, take out difficult ask to solve fisher
Topic.
A kind of combined bio trawling gear of the utility model is achieved in that
A kind of combined bio trawling gear, including preceding trawlnet component, the middle trawlnet component being set-located from the inside to the outside
With rear dragging screen component, and the middle trawlnet component include at least one;
The preceding trawlnet component, middle trawlnet component and rear dragging screen component respectively include fixed frame and are mounted on the fixed frame
The net capsule of rear end, and the side plate of fixed frame front end two sides is set;
The size of fixed frame and net capsule wherein from the inside to the outside successively increases;The preceding trawlnet component and middle trawlnet component
The strip-shaped hole of correspondence is provided on each side plate;
Connecting plate corresponding with strip-shaped hole is provided on the side plate of the rear dragging screen component;
The connecting plate is from rear to the preceding strip-shaped hole sequentially passed through on middle trawlnet component and preceding trawlnet component side plate and extension
To on front side of preceding trawlnet component, and the front end of the connecting plate is connected with connection frame;
The drawstring extended on the outside of fixed frame from net capsule bottom is provided in the net capsule.
Further, the net capsule of the preceding trawlnet component, middle trawlnet component and rear dragging screen component sorts from the inside to the outside, net
The aperture in hole is sequentially increased.
Further, the leading flank upper/lower terminal of the connecting plate is respectively arranged with jack, the front end point of upper and lower side
It is not provided with the locking hole communicated with jack, clamping screw is installed in the locking hole.
Further, the connection frame includes the U-shaped frame being separately mounted on two connecting plates, and is connected to U-shaped frame
Between cross bar, the centre of the cross bar is provided with link block;
The both ends of the U-shaped frame are provided with mounting hole, protrude into jack and are fixed using clamping screw.
Further, the net capsule is fixed on fixed frame rear inside, the fixed plate and net by fixed plate and bolt
Gasket is lined between capsule, the screw bolt passes fixed plate, gasket and net capsule are simultaneously fixed on fixed frame.
Further, the side end of the preceding trawlnet component, middle trawlnet component and rear dragging screen component is connected with float.
Further, the upper and lower side of the fixed frame front end of the preceding trawlnet component is respectively arranged with baffle, and the baffle
It is structure as a whole with the side plate of preceding trawlnet component.
Further, water slug device is provided on the baffle of the downside of the preceding trawlnet component;
The water slug device includes water pump and the water inlet pipe for being connected to pump intake, and is connected to pump outlet
Outlet pipe, be provided with several water check valves on front side of the outlet pipe.
Further, the water pump setting is provided with the power supply being connected with water pump in cabinet, and in cabinet.
Further, strainer is provided in the water inlet pipe.
The utility model has the beneficial effects that the combined bio trawlnet of the utility model fills the group in such a way that multilayer is arranged
At knockdown trawling gear, variety classes or the fisher of size can be subjected to preliminary differentiation, reduce subsequent craft and choose
The workload picked.
Further, it is provided with drawstring in the inside of each net capsule, it, can be direct by drawstring when taking out fisher
It will be routed up inside net capsule, increase the convenience for taking out fisher, improve efficiency;
Again into further, every layer of trawlnet component is movable installation, convenient disassembly, increases later period cleaning and maintenance
Convenience.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the sectional view of the combined bio trawling gear of the utility model embodiment 1;
Fig. 2 is the enlarged drawing of part A in Fig. 1;
The structure chart of the preceding trawlnet component of the combined bio trawling gear of Fig. 3 the utility model embodiment 1;
Fig. 4 is the enlarged drawing of part B in Fig. 3;
The structure chart of the middle trawlnet component of the combined bio trawling gear of Fig. 5 utility model embodiment 1;
The structure chart of the rear dragging screen component of the combined bio trawling gear of Fig. 6 the utility model embodiment 1;
The enlarged drawing of C portion in Fig. 7 Fig. 6;
Fig. 8 is the structure chart of the connection frame of the combined bio trawling gear of the utility model embodiment 1;
Fig. 9 is the structure chart of the preceding trawlnet component of the combined bio trawling gear of the utility model embodiment 2;
Figure 10 is the enlarged drawing of the part D in Fig. 9;
Figure 11 is the top cross-sectional view of the cabinet of the combined bio trawling gear of the utility model embodiment 2;
In figure: fixed frame 1, net capsule 2, side plate 3, strip-shaped hole 4, connecting plate 5, connection frame 6, drawstring 7, jack 8, locking hole 9,
Clamping screw 10, U-shaped frame 11, cross bar 12, link block 13, perforation 14, fixed plate 15, bolt 16, gasket 17, float 18, baffle
19, water pump 20, water inlet pipe 21, outlet pipe 22, water check valve 23, cabinet 24, power supply 25, strainer 26.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.
Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the utility model of protection is sought, but is merely representative of the selected embodiment of the utility model.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Mode is fallen within the protection scope of the utility model.
Embodiment 1:
As shown in Figures 1 to 8, a kind of combined bio trawling gear, including the preceding trawlnet being set-located from the inside to the outside
Component, middle trawlnet component and rear dragging screen component, and middle trawlnet component include at least one, preceding trawlnet component, middle trawlnet component and
Rear dragging screen component respectively includes fixed frame and the net capsule 2 for being mounted on 1 rear end of fixed frame, and is arranged in 1 front end two sides of fixed frame
Side plate 3.The size of fixed frame 1 and net capsule 2 wherein from the inside to the outside successively increases, preceding trawlnet component and middle trawlnet component it is each
It is provided with the strip-shaped hole 4 of correspondence on a side plate 3, connection corresponding with strip-shaped hole 4 is provided on the side plate of rear dragging screen component
Plate 5, connecting plate 5 are dragged from rear to the preceding strip-shaped hole 4 sequentially passed through on middle trawlnet component and preceding trawlnet component side plate and before extending to
On front side of screen component, and the front end of connecting plate 4 is connected with connection frame 6, is provided in net capsule 2 from 2 bottom of net capsule and is extended to admittedly
Determine the drawstring 7 on the outside of frame.
As depicted in figs. 1 and 2, by taking three middle trawlnet components as an example, the fixed frame 1 and net capsule 2 of first middle trawlnet component
It covers in the outside of preceding trawlnet component, and is fitted in the side plate 3 of trawlnet component in this on rear side of side plate 3 of preceding trawlnet component, so
Afterwards by the fixed frame 1 of trawlnet component in second and 2 sets of the net capsule outsides in first middle trawlnet component, and trawlnet component in this
Side plate 3 be fitted in the rear side of previous middle trawlnet component, then trawlnet component in third is mounted on after the same method
The outside of second middle trawlnet component, finally by 2 sets of the fixed frame 1 of rear dragging screen component and net capsule in second middle trawlnet component
Outside, and its side plate 3 is fitted in the rear side of second middle trawlnet component side plate 3 in the same way.When trawlnet component in increase
Quantity when, then in a manner mentioned above carry out.
When every layer of trawlnet component is set-located, the drawstring 7 positioned at the trawlnet component in outside can drag where it
The front side of side plate 3 of screen component with stretched out on rear side of the side plate 3 of previous trawlnet component, the drawstring of whole device 7 is then fixed on one
It rises, prevents it to be scattered, also may further ensure that the connection between each layer trawlnet component.
Biology trawling gear needs provided in this embodiment can carry out during fishing according to the size of fisher
Preliminary classification, so that the workload of manual sort is reduced, in order to realize this preliminary classification, preceding trawlnet component, middle trawlnet group
The net capsule 2 of part and rear dragging screen component sorts from the inside to the outside, and the aperture of mesh is sequentially increased.
During fishing, before fisher initially enters in the net capsule 2 of trawlnet component, when its size is less than the net capsule 2
Mesh size when, then can pass through mesh enter first middle trawlnet component net capsule 2 in, if its size is still less than the net capsule
The size of 2 mesh then continues directly to mobile toward the net capsule 2 of outside.If its size is directly greater than the net of the net capsule 2 of preceding trawlnet component
Hole then can directly stay in the net capsule 2, if its size still less than the mesh of the net capsule 2 of rear dragging screen component, can be from rear trawlnet group
It is swum out of in the net capsule of part.
In addition, drawstring 7 can freely shuttle in mesh of net capsule 2 where it for convenience, the diameter of drawstring is less than it
The diameter of the mesh of place net capsule 2.
Since biological trawling gear needs to move under water under the drive of ship, connection frame 6 is consolidated for convenience
It is scheduled on biological trawling gear, the leading flank upper/lower terminal of connecting plate 5 is respectively arranged with jack 8, the front end point of upper and lower side
It is not provided with the locking hole 9 communicated with jack 8, locks in 9 holes and clamping screw 10 is installed.Jack 8, locking hole and clamping screw
10 setting is to prevent it from generating during towing for being fixedly connected with frame 6 and fall.
As shown in figure 8, being connect for convenience using connection frame 6 with ship, connection frame 6 includes being separately mounted to two connections
U-shaped frame 11 on plate, and the cross bar 12 being connected between U-shaped frame 11, the centre of cross bar 12 are provided with link block 13.
In order to facilitate the rope of connection ship, link block 13 is provided centrally with perforation 14, and rope can be directly anchored to
In perforation 14.
In order to increase the intensity of connection, U-shaped frame 11 and cross bar 12 are structure as a whole, and are between link block 13 and cross bar 12
Welding.
In order to increase the fastness connected between connection frame 6 and connecting plate 5, the both ends of U-shaped frame 11 are provided with mounting hole,
It protrudes into jack 8 and fixed using clamping screw 10.
When installing connection frame 6, the both ends of U-shaped frame 11 are inserted into jack 8 first, and make its mounting hole and locking hole 9
Relatively, then clamping screw 10 is tightened and is screwed in mounting hole, realize the fixation to connection frame 6.
Net capsule 2 will receive the drag effect of water during use, therefore need to guarantee the strong of its connection in connection
Degree, in the present embodiment, net capsule 2 are fixed on 1 rear inside of fixed frame, fixed plate 15 and net capsule by fixed plate 15 and bolt 16
Gasket 17 is lined between 2, bolt 16 sequentially passes through fixed plate 15, gasket 17 and net capsule 2 and is fixed on fixed frame 1.
During installation, the edge of net capsule 2 is fitted on the rear end inner wall of fixed frame 1, is then successively covered on its surface
Upper gasket 17 and fixed plate 15 finally recycle bolt 16 to sequentially pass through fixed plate 15, gasket 17 and net capsule 2 and screw in fixed frame
It is fixed in 1.
And bolt 16 includes multiple, and is set in a row, guarantees that the everywhere junction between net capsule 2 and fixed frame 1 is equal
It is connected firmly, prevents occurring the case where net capsule 2 is fallen during fishing.
Rubber material can be selected but be not limited only to gasket 17, and Corrosion Protection is good, long service life.
Since the biological trawling gear of this implementation is that multilayer trawlnet component is composed, in order to by prolonged use or
The hard objects such as marine reef touched can be convenient and recover when falling its generation person again, preceding trawlnet component, middle trawlnet group
The side end of part and rear dragging screen component is connected with float 18.
The rope for connecting float 18 can use solid and light weight rope, such as the rope of polypropylene material, can be with
The rope for directly passing through connection float 18 when recovering pulls it sea.
During biological trawling gear moves ahead, water can generate biggish resistance to it, and resistance can be to multilayer trawlnet
The connection of component impacts, and the resistance of water increases the probability between each layer trawlnet component in order to prevent, preceding trawlnet component
The upper and lower side of 1 front end of fixed frame is respectively arranged with baffle 19, and baffle 19 and the side plate 3 of preceding trawlnet component are structure as a whole.
Since preceding trawlnet component is located at most front side, the consolidating the trawlnet component of rear side of baffle 19 can be utilized when moving
Determine frame 1 to cover up, prevent water flow from causing individual resistance to it, guarantees the fastness connected between each trawlnet component.
Between being caught, needs to assemble each trawlnet component, be set in one according to sequence from the inside to the outside
Rise, and the position of the corresponding strip-shaped hole of each layer is calibrated, then connected when rear dragging screen component is installed plate from it is rear it
Before sequentially pass through strip-shaped hole 4 and before extending to trawlnet component 3 front side of side plate, then the connection frame 6 being connected with vessel line is pacified
On side plate 3.Can put it into it is marine, its follow ship move ahead during can both carry out fishing operation.
After salvaging biological trawling gear, connection frame 6 can be disassembled from connecting plate 5 first, so
Trawlnet component is successively removed afterwards, and the drawstring in every layer of trawlnet component 7 is surpassed to its 1 direction of fixed frame and is pulled out, then may be used
Entirely to rout up net capsule 2, convenient for taking out fisher.And mesh of net capsule 2, is turning back where drawstring 7 can pass through it
When drawstring 7 can be pierced by from the bottom of net capsule 2, net capsule 2 is retracted to above-mentioned opposite direction.It is cleaned in net capsule 2
When can also be operated in the same way, can increase net capsule 2 cleaning and maintenance convenience.
Embodiment 2:
When catching some marine benthos, existing biology trawlnet generally uses zigzag fashion, easily falls into this way
Bed mud scrapes destruction bottom environment on hard bottom, or even can damage to fisher itself.
For this problem, as shown in Figures 9 to 11, the present embodiment provides a kind of combination on the basis of embodiment 1
Formula biology trawling gear, structure is roughly the same with combined bio trawling gear provided in embodiment 1, and difference exists
In being provided with water slug device on the baffle 19 of the downside of preceding trawlnet component;The setting of water slug device can be to biological trawlnet
Substrate biology in front of device alarmed, its bigger probability after jumping out in sandstone is made to be directly entered in net capsule and be caught
It obtains, improves amount of fishing.
In order to increase the flowing velocity of water flow on front side of biological trawling gear, water slug device includes water pump 20 and is connected to water
The water inlet pipe 21 of 20 water inlets is pumped, and is connected to the outlet pipe 22 of 20 water outlet of water pump, if the front side of outlet pipe 22 is provided with
Dry water check valve 23.Seawater inhalation wherein, and pressurizes to it and is sprayed from water check valve 23 by water pump 20, reaches frightened
The effect disturbed.
Optionally, the water outlet of water check valve 23 can be towards front, can also obliquely downward towards front side or direction
Lower section can reach this effect.Preferably, it is directed towards the obliquely downward of front side.
Electric energy is provided in order to facilitate feed pump 20, the setting of water pump 20 is provided in cabinet 24, and in cabinet 24 and water pump
20 connected power supplys 25.
Cabinet 24 and outlet pipe 22 are each attached on the baffle 19 of downside, and the entrance of water inlet pipe 21 is arranged before cabinet 24
Side can increase the pressure of water inlet.
Water pump 20 chooses deep submersible pump, and power supply 25 passes through water proof processing of the outside by sealing, prevents short circuit
Or the case where electric leakage.
Since there are many microorganism in seabed or sandstone, it enters in water pump 20 and damages to water pump in order to prevent, intakes
Strainer 26 is provided in pipe 22.
Control device can also be set in cabinet 24 by biological trawling gear front opening motor into the water,
Voluntarily start when it reaches seabed, can be achieved.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
In the description of the present invention, it should be understood that indicating position or the term of positional relationship are based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion institute
The equipment or element of finger must have a particular orientation, is constructed and operated in a specific orientation, therefore should not be understood as to this reality
With novel limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;It can be
Mechanical connection, is also possible to be electrically connected;It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the present invention unless specifically defined or limited otherwise, fisrt feature is on or below second feature
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature the
Right above two features and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature is in the second spy
Under sign, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of fisrt feature level
Height is less than second feature.
Claims (10)
1. a kind of combined bio trawling gear, which is characterized in that including be set-located from the inside to the outside preceding trawlnet component, in
Trawlnet component and rear dragging screen component, and the middle trawlnet component includes at least one;
The preceding trawlnet component, middle trawlnet component and rear dragging screen component respectively include fixed frame (1) and are mounted on the fixed frame
(1) net capsule (2) of rear end, and setting is in the side plate (3) of fixed frame (1) front end two sides;Fixed frame (1) wherein from the inside to the outside
It is successively increased with the size of net capsule (2);
The strip-shaped hole (4) of correspondence is provided on each side plate (3) of the preceding trawlnet component and middle trawlnet component;
Connecting plate (5) corresponding with strip-shaped hole (4) is provided on the side plate (3) of the rear dragging screen component;
The connecting plate (5) is from rear to the preceding strip-shaped hole (4) sequentially passed through on middle trawlnet component and preceding trawlnet component side plate and prolongs
Before extending on front side of trawlnet component, and the front end of the connecting plate (5) is connected with connection frame (6);
The drawstring (7) extended on the outside of fixed frame from net capsule (2) bottom is provided in the net capsule (2).
2. combined bio trawling gear according to claim 1, which is characterized in that the preceding trawlnet component, middle trawlnet
The net capsule (2) of component and rear dragging screen component sorts from the inside to the outside, and the aperture of mesh is sequentially increased.
3. combined bio trawling gear according to claim 1, which is characterized in that the leading flank of the connecting plate (5)
Upper/lower terminal is respectively arranged with jack (8), and the front end of upper and lower side is respectively arranged with the locking hole (9) communicated with jack (8),
Clamping screw (10) are installed in the locking hole (9).
4. combined bio trawling gear according to claim 3, which is characterized in that the connection frame (6) includes difference
The U-shaped frame (11) being mounted on two connecting plates, and the cross bar (12) being connected between U-shaped frame (11), the cross bar (12)
Centre be provided with link block (13);
The both ends of the U-shaped frame (11) are provided with mounting hole, protrude into jack (8) and fixed using clamping screw (10).
5. combined bio trawling gear according to claim 1, which is characterized in that the net capsule (2) passes through fixed plate
(15) and bolt (16) is fixed on fixed frame (1) rear inside, is lined with gasket between the fixed plate (15) and net capsule (2)
(17), the bolt (16) sequentially passes through fixed plate (15), gasket (17) and net capsule (2) and is fixed on fixed frame (1).
6. combined bio trawling gear according to claim 1, which is characterized in that the preceding trawlnet component, middle trawlnet
The side end of component and rear dragging screen component is connected with float (18).
7. combined bio trawling gear according to claim 1, which is characterized in that the fixed frame of the preceding trawlnet component
(1) the upper and lower side of front end is respectively arranged with baffle (19), and the baffle (19) and the side plate (3) of preceding trawlnet component are integrated
Structure.
8. combined bio trawling gear according to claim 7, which is characterized in that the downside of the preceding trawlnet component
Baffle is provided with water slug device on (19);
The water slug device includes water pump (20) and the water inlet pipe (21) for being connected to water pump (20) water inlet, and is connected to water
The outlet pipe (22) of (20) water outlet is pumped, is provided with several water check valves (23) on front side of the outlet pipe (22).
9. combined bio trawling gear according to claim 8, which is characterized in that the water pump (20) is arranged in cabinet
(24) in, and the power supply (25) being connected with water pump (20) is provided in cabinet (24).
10. combined bio trawling gear according to claim 8, which is characterized in that setting in the water inlet pipe (21)
There are strainer (26).
Priority Applications (1)
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CN201822028042.2U CN209185450U (en) | 2018-12-04 | 2018-12-04 | A kind of combined bio trawling gear |
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CN201822028042.2U CN209185450U (en) | 2018-12-04 | 2018-12-04 | A kind of combined bio trawling gear |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110432233A (en) * | 2019-09-02 | 2019-11-12 | 浙江海洋大学 | A kind of elasticity aperture film Cod-ends of Trawl |
CN110521681A (en) * | 2019-09-29 | 2019-12-03 | 浙江海洋大学 | A kind of tear-away Cod-ends of Trawl of nested type separation catches and operational method |
-
2018
- 2018-12-04 CN CN201822028042.2U patent/CN209185450U/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110432233A (en) * | 2019-09-02 | 2019-11-12 | 浙江海洋大学 | A kind of elasticity aperture film Cod-ends of Trawl |
CN110432233B (en) * | 2019-09-02 | 2021-06-08 | 浙江海洋大学 | Elastic small-hole film trawl net bag |
CN110521681A (en) * | 2019-09-29 | 2019-12-03 | 浙江海洋大学 | A kind of tear-away Cod-ends of Trawl of nested type separation catches and operational method |
CN112956454A (en) * | 2019-09-29 | 2021-06-15 | 浙江海洋大学 | Operation method for nested separated fishing catch object and capable of falling off trawl bag |
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 |
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