CN114304087B - Double-wing silverfish carrying net device for preventing waterweeds - Google Patents
Double-wing silverfish carrying net device for preventing waterweeds Download PDFInfo
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- CN114304087B CN114304087B CN202111471188.4A CN202111471188A CN114304087B CN 114304087 B CN114304087 B CN 114304087B CN 202111471188 A CN202111471188 A CN 202111471188A CN 114304087 B CN114304087 B CN 114304087B
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Abstract
The invention relates to a grass-proof double-wing silverfish carrying net device, which comprises a ship body and a support plate, wherein the support plate is arranged at the middle rear part of two sides of the ship body, ejector rod piles are welded at the lower part of the support plate and connected with ejector rods, the front ends of the ejector rods are connected with a net opening frame, the net opening frame is upwards connected with a hoisting motor through a retractable cable, is forwards connected with a waterweed fence and is backwards connected with a catching net. The net port of the invention is arranged in front, and the operation inclination angle and the depth of the net port are adjustable; the aquatic weeds can be effectively prevented from entering the net; meanwhile, the ejector rods, the net opening frame and the pasture and water fence are connected in an inserting type riveting or meshing mode, the space on a ship is not occupied, the stability of a fishing ship is not affected, the structure is more exquisite, the operation is simpler and more convenient, the safety is better, and the capturing efficiency is higher.
Description
Technical Field
The invention relates to the field of fishery fishing equipment, in particular to a grass-proof double-wing whitebait shouldering device.
Background
Whitebait is widely distributed in rivers and lakes in China, is a small fish with rich resources, lives in the upper layer or water grass clusters in water, is small in size and slow in swimming, and often the water grass in the water areas rich in whitebait is flourishing relatively, so that the fishing difficulty is increased correspondingly. The existing whitebait fishing method mainly comprises a trawl net, a purse net, a push net and a silk screen. At places where trawls, purse nets and push nets pass during fishing, aquatic plants growing in water are often blocked by waist and broken or pulled up with roots, and are completely fished together with water floaters, slender and tender silverfish are wound in the aquatic plants, sorting is very inconvenient, the phase of the silverfish is influenced, and the efficiency is extremely low; the net pushing device is characterized in that the net pushing device is supported by two cross supporting rods to open a net port, the net width is only about the width of a ship, the sweeping area is small, the catch amount is small, frequent ship stopping is needed for processing aquatic plants, the efficiency is extremely low, and meanwhile, the supporting rods and other structures are all arranged on the ship, so that the production is inconvenient, the stability is damaged, and the potential safety hazard is large; the silk screen needs to rely on the manual work to separate the whitebait from the mesh of the silk screen one by one, which wastes time and labor and has high cost.
A water grass-proof double-wing silverfish carrying net device is characterized in that a carrying net is directly arranged at the bow of a ship, the width of a net port reaches twice the width of the ship, a waterweed fence is arranged in front of the carrying net, and the waterweed fence is arranged in a V-shaped manner through a three-dimensional waterweed fence, an inclined downward pressing type guide strip, a net port is arranged in a forward inclining manner, and under the multiple actions of hydrodynamic force: (1) The growing waterweeds are guided by the diversion strips to press down from the inclined plane of the waterweed fence without damaging the waterweeds; (2) The floating objects (such as float grass, etc.) in the water slide away from the inclined plane of the three-dimensional V-shaped float grass fence; (3) The fish catch such as whitebait slides into the net through the gaps of the waterweed fences. Meanwhile, the operation depth and the inclination angle of the net can be adjusted in time, and the device is safe, practical, ecological, energy-saving and high in fishing efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a grass-proof double-wing silverfish carrying net device.
The purpose of the invention is realized by the following technical scheme:
a grass-proof double-wing salangid net device comprises a ship body and a support plate; the supporting plate is formed by cutting and pressing a steel plate with higher strength, the bending degree of the plate surface is pressed and attached to the bending degree of the side plate, the height of the supporting plate is close to the depth of the fishing boat, the width of the supporting plate is more than 1/2 of the height of the fishing boat, so that the stressed area of the side plate is increased, the supporting plate is fixedly installed at the middle and rear parts of two sides of the fishing boat through bolts, and ejector rod piles are welded at the lower part of the supporting plate.
The position of the ejector rod pile is below the draft surface of the fishing boat and is about 1/2 of the height of the net opening frame, the ejector rod pile is connected with the ejector rod, the front end of the ejector rod is connected with the middle point of the vertical frame of the net opening frame through the net opening inclination angle adjusting component, and the ejector rod can rotate around the ejector rod pile. It should be noted that the height of the position of the post rod pile basically ensures that the post rod is just parallel to the horizontal plane when the upper opening of the net opening frame just submerges in the water during normal operation, thereby reducing the resistance of the water body when the fishing boat advances and increasing the stability of the fishing boat.
The net mouth inclination angle adjusting assembly comprises a pair of concave-convex pulleys and a bolt, the concave-convex pulleys are respectively welded at the middle point positions of the front end of the ejector rod and the vertical frame of the net mouth frame, and after the net mouth inclination angle is adjusted during production, the bolt is screwed up to lock the concave-convex pulleys, so that the net mouth operation inclination angle is fixed.
The screen port frame is a light steel structure which is in a 'Chinese character ri' shape and is three-dimensionally in a 'V' shape along a projection plane with a bending angle of about 150 degrees along the central line, and is divided into a first screen port frame and a second screen port frame, the bending angle can conveniently shunt waterweeds to two sides of the screen port, the water resistance is reduced, the waterweeds shunting effect is poor when the bending angle is too large, and the sweeping area of the carrying net is wasted when the bending angle is too small. The first net mouth frame and the second net mouth frame are the same in size and symmetrical in shape, the height of the net mouth frame is 1-1.5m, and the width of the net mouth frame is about twice of the width of a boat, so that the movable space of the upper layer in the water body is favored by corresponding silverfish, the capturing probability is increased, meanwhile, the operation is flexible, the boat speed is not influenced, and the fishing boat is adaptive to the existing load. Holes connected with the net-carrying headropes and the waterweed fences are correspondingly reserved on the frame beams around the net-port frame, and the distance between the holes is about 15cm. The middle point of the upper frame beam of the net port frame is welded with a movable ring, and is connected with a hoisting motor through a retracting cable so as to control the operation depth of the net in water and the operation of retracting the net, the hoisting motor is arranged on a strut of the bow, and the strut is fixed on a deck of the bow through a reinforcing rib.
The front of the net opening frame is connected with a waterweed fence, a 45-degree flow guide strip is obliquely arranged in the waterweed fence frame, and the arrangement of the 45-degree flow guide strip equally divides the flow direction of waterweeds from the underwater vertical direction and the two directions on the horizontal plane. Meanwhile, according to the characteristic that the roots and stems of the aquatic plants in the lake are long, the distance between the guide strips is preferably larger than or equal to 10CM, and if the distance is too small, the ship moving resistance is increased, and the power of a fishing ship is consumed. Under the combined action of a vertical V-shaped waterweed fence, inclined 45-degree downward pressing type guide strips, forward inclination of a net opening by about 15 degrees and hydrodynamic force: (1) In the vertical direction, the growing waterweeds are guided by the guide strips to press and slide downwards from the inclined surface of the waterweed fence, and the waterweeds are not damaged; (2) On the horizontal plane, floating objects (float grass, etc.) in water slide away from the inclined plane of the three-dimensional V-shaped float grass fence; (3) The fishes such as whitebait and the like fall into the net through the gaps of the waterweed fences.
The two-wing silver-fish carrying net is connected behind the net port frame, namely a first silver-fish carrying net and a second silver-fish carrying net, the silver-fish carrying net is formed by cutting and sewing four triangular dense-hole silver-fish net covers according to the size of the net port frame, the tail part of the carrying net is connected with a net bag, and the net bag is tied on a stern board pile by using a mooring rope so as to conveniently and timely collect the catch.
Compared with the prior art, the invention has the following positive effects:
(1) The invention directly equips the carrying net at the bow of the ship, shortens the escape time of the fish catch object, the width of the net mouth is twice of the width of the ship, and increases the fishing probability. Through net gape inclination angle adjusting component and the setting of hoisting motor, can adjust net gape operation inclination and degree of depth in good time according to actual need, flexible, more ecological energy-conserving, more convenient and practical, fishing efficiency is higher. The defects of complicated structure, waste of the ship head water sweeping area and low efficiency of the trawl and the like are overcome.
(2) The ejector rods, the net opening frame and the waterweed fences are all connected in a plug-in riveting or meshing manner, so that the space on a ship is not occupied, the ship stability is not influenced, and the device is more exquisite, more convenient and safer.
(3) The invention adopts the arrangement of the waterweed fence, and through the combined action of the three-dimensional V-shaped waterweed fence, the downward pressing type guide strips which are obliquely arranged at an angle of 45 degrees, the forward inclining arrangement of the net mouths and the hydrodynamic force: (1) In the vertical direction, the growing waterweeds are guided by the guide strips to press and slide downwards from the inclined surface of the waterweed fence, and the waterweeds are not damaged; (2) On the horizontal plane, floating objects (float grass, etc.) in the water slide away from the inclined plane of the V-shaped float grass fence; (3) The fish-catching objects such as whitebait and the like slide into the net through the gaps of the waterweed fences, so that the environment is protected, and the fishing efficiency is higher.
Drawings
Fig. 1 is a schematic view of the overall structure of a grass-proof double-wing salangid net device according to the present invention.
In the figure:
1. a hull;
2. a support plate;
3. carrying out post rod piling;
4. a top rod;
5. a net port inclination angle adjusting component;
6.1, a first network port frame;
6.2, a second network port frame;
7. a movable ring;
8. retracting and releasing the mooring rope;
9. a hoisting motor;
10. a column;
11. a waterweed fence;
12. a flow guide strip;
13.1, a first cargo net;
13.2, a second lever net;
14. a mesh bag;
15. and (4) starboard piles.
Detailed Description
The following provides a specific embodiment of the grass-proof double-wing silverfish carrying net device of the invention.
Example 1
As shown in FIG. 1, the embodiment of the grass-proof double-wing silverfish carrying net device is mainly applied to catching small-sized fishes such as silverfish in rivers and lakes.
The utility model provides a two-wing silverfish of pasture and water carries net device, including hull 1, backup pad 2, ejector pin stake 3 and ejector pin 4, backup pad 2 passes through bolt fixed mounting at rear portion in fishing boat both sides, backup pad bottom welding ejector pin stake 3, the position of ejector pin stake is below the fishing boat draft surface of water, about 1/2 department of net gape frame height, so that during normal production, the mouth frame just submerges in 6 upper mouths of net gape frame, ejector pin 4 is parallel with the horizontal plane, increase the area of sweeping promptly, reduce the ship resistance, ejector pin 4 swing joint ejector pin stake 3, and can rotate around ejector pin stake 3, the ejector pin front end passes through net gape inclination adjusting part 5 and connects net gape frame 6.
The net mouth inclination angle adjusting assembly 5 comprises a pair of concave-convex pulleys and a bolt, the concave-convex pulleys are welded at the middle points of the front end of the ejector rod 4 and the vertical frame of the net mouth frame 6 respectively, and the concave-convex pulleys are locked and locked by tightening the bolt after the net mouth inclination angle is adjusted during production.
The net opening frame 6 comprises a left net opening frame, a right net opening frame, a first opening frame 6.1 and a second opening frame 6.2, is a light steel structure which is in a shape of Chinese character ri and is in a V shape along a projection plane with a central line folding angle of 150 degrees, and has the height of 1-1.5m and the width of 2 times of the width of a ship. Holes are reserved every 15cm around the frame beam of the net opening frame 6 so as to be connected with the net opening carrying ropes and the waterweed fences 11 in a string manner; the middle point of the upper frame beam of the mesh opening frame 6 is welded with a movable ring 7, and the movable ring is connected with a hoisting motor 9 through a retractable cable 8.
The hoisting motor 9 is arranged on a stem 10 at the bow of the vessel, the bottom of the stem 10 is fixed with a deck at the bow of the vessel through a reinforcing rib, and the hoisting motor 9 drives the retracting mooring rope 8 to adjust a water layer for operation of the carrying net in water and retract the carrying net.
The front of the net opening frame 6 is connected with a waterweed fence 11, downward-pressing type guide strips 12 with the angle of 45 degrees are obliquely arranged on the waterweed fence 11, and the distance between the guide strips 12 is about 10cm. During production operation, under the multiple actions of the three-dimensional V-shaped waterweed fence 11, the inclined 45-degree downward pressing type guide strips 12, the forward 15-degree inclined net mouth and the water power: (1) In the vertical direction, the growing waterweeds are guided by the diversion strips 12 to slide downwards from the inclined surface of the waterweed fence 11 without damage; (2) On the horizontal plane, floating objects (such as float grass, etc.) in water slide out of the inclined plane of the three-dimensional V-shaped float grass fence 11; (3) Aquatic products such as whitebait and the like slide into the net through the gaps of the waterweed fences 11.
The net mouth frame 6 is connected with a double-wing double-bag dense-hole silver fish carrying net 13 at the back, the first net mouth frame 6.1 is connected with a first carrying net 13.1, the second net mouth frame 6.2 is connected with a second carrying net 13.2, the net body of the carrying net is formed by cutting and sewing 4 pieces of triangular dense-hole silver fish netting with different shapes according to the size of the net mouth frame, a net mouth assembly net head line is assembled at the net mouth and connected with the net mouth frame through a net mouth line in a string way, the tail part of the carrying net is connected with a net bag 14, and a lacing line on the net bag is tied on a tail board pile 15 to collect fish in time.
The top rod, the net opening frame, the waterweed fence and the like are all in inserted riveting or occluded connection, so that the waterweed-preventing double-wing silverfish carrying net device is simple, convenient and practical.
In production practice, the fishing boat assembled with the device is firstly driven to a designated fishing ground, the boat is slowed down or stopped, the fishing nets bound on the ejector rods are unfastened and put into water, the inclination angles of the net openings (0 inclination angle when no water grass exists, 15-degree left and right inclination angles when the water grass is sparse and the water grass can be increased to 35-degree inclination angles to the maximum when the water grass is slightly more) are adjusted according to the water grass condition of the fishing ground, then the lifting motor is operated to lower the net opening frame to the upper opening of the net opening frame to just submerge into the water while the boat is moving, the speed is reduced after 20 minutes, the lifting motor is started to lift the net opening frame, or the carrying net sacs are directly lifted to collect fish and obtain objects, and the operation is repeated until the full cabin is returned. When the ship returns to the sea, the net opening frame is lifted to a height which is more than 10cm away from the water surface, the height is suitable for not blocking the sight of the ship, and the fishing net is properly tied on the ejector rods.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the concept of the present invention, and these modifications and decorations should also be regarded as being within the protection scope of the present invention.
Claims (3)
1. A grass-proof double-wing silverfish carrying net device is characterized by comprising a boat body (1) and a supporting plate (2); the support plate (2) is fixedly arranged at the middle rear part of two sides of the fishing boat through bolts, and the lower part of the support plate (2) is welded with an ejector pin pile (3); the position of the ejector rod pile (3) is below the draft water surface of the fishing boat, the height of the net mouth frame (6) is 1/2, so that the upper opening of the net mouth frame (6) is just submerged in water during normal operation, the ejector rod (4) is basically parallel to the water surface, the resistance of a water body during advancing is reduced, the ejector rod pile (3) is connected with the ejector rod (4), and the front end of the ejector rod (4) is connected with the middle part of a vertical frame of the net mouth frame (6) through a net mouth inclination angle adjusting component (5); the net port frame (6) is connected with a double-wing silverfish carrying net (13) backwards through a steel rope;
the net mouth inclination angle adjusting component (5) comprises a pair of concave-convex pulleys and a bolt, the concave pulleys and the convex pulleys are respectively and oppositely welded at the front end of the ejector rod (4) and the middle part of the vertical frame of the net mouth frame, and the concave-convex pulleys are locked and locked by screwing the bolt;
the screen port frame (6) is a light steel structure which is in a Y-shaped projection plane and a V-shaped stereo projection plane along a central line folding angle of 150 degrees and is divided into a first screen port frame (6.1) and a second screen port frame (6.2).
2. The grass-preventing double-wing salangid net carrying device according to claim 1, wherein the first net port frame (6.1) and the second net port frame (6.2) have the same size, symmetrical shape, height of 1-1.5m and width twice of the width of the ship.
3. The double-wing silverfish carrying net device for preventing water plants as claimed in claim 1, wherein the front of the net mouth frame (6) is connected with a waterweed fence (11), and the waterweed fence is internally provided with 45-degree guide strips (12) with the spacing of more than or equal to 10cm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121986731X | 2021-08-23 | ||
| CN202121986731 | 2021-08-23 |
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| CN114304087A CN114304087A (en) | 2022-04-12 |
| CN114304087B true CN114304087B (en) | 2023-03-28 |
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| CN202111471188.4A Active CN114304087B (en) | 2021-08-23 | 2021-12-03 | Double-wing silverfish carrying net device for preventing waterweeds |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201509513U (en) * | 2009-06-19 | 2010-06-23 | 中国水产科学研究院长江水产研究所 | River fish collection device |
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| CN107996526A (en) * | 2017-12-21 | 2018-05-08 | 浙江工业大学 | A kind of continuous trawl fishing method |
| CN108013000A (en) * | 2017-12-15 | 2018-05-11 | 浙江海洋大学 | Semi-automatic fishing gear peculiar to vessel |
| 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 |
Family Cites Families (7)
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|---|---|---|---|---|
| GB179605A (en) * | 1921-02-03 | 1922-05-03 | Lybeck Ocean Harvester Co Inc | Improvements in fishing boats |
| GB884228A (en) * | 1957-08-02 | 1961-12-13 | Harold Stanley Rowton | Improvements in or relating to trawl fishing apparatus |
| FR1249875A (en) * | 1959-11-14 | 1961-01-06 | Improvements to stern trawlers | |
| CN101990864B (en) * | 2009-08-24 | 2012-05-30 | 中国水产科学研究院东海水产研究所 | Self-submergence frame type sampling method of marine juvenile fish by sampling net |
| CN202773801U (en) * | 2012-05-31 | 2013-03-13 | 中国水产科学研究院长江水产研究所 | River double-wing fry collecting netting gear |
| CN204670180U (en) * | 2015-05-04 | 2015-09-30 | 徐先平 | The large-scale automatic fishing device in a kind of fish pond |
| CN111802341B (en) * | 2020-06-01 | 2022-04-05 | 浙江省海洋水产研究所 | Rotary fishing device and fishing method |
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2021
- 2021-12-03 CN CN202111471188.4A patent/CN114304087B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201509513U (en) * | 2009-06-19 | 2010-06-23 | 中国水产科学研究院长江水产研究所 | River fish collection device |
| CN104304201A (en) * | 2014-10-15 | 2015-01-28 | 广州文冲船厂有限责任公司 | Net-throwing and fishing method and net-throwing and fishing structure of lamplight cover net fishing boat |
| CN108013000A (en) * | 2017-12-15 | 2018-05-11 | 浙江海洋大学 | Semi-automatic fishing gear peculiar to vessel |
| CN107996526A (en) * | 2017-12-21 | 2018-05-08 | 浙江工业大学 | A kind of continuous trawl fishing method |
| 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 |
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