CN114271242A - Fishing corbicula fluminea drag harrow net device and application method thereof - Google Patents
Fishing corbicula fluminea drag harrow net device and application method thereof Download PDFInfo
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- CN114271242A CN114271242A CN202111604772.2A CN202111604772A CN114271242A CN 114271242 A CN114271242 A CN 114271242A CN 202111604772 A CN202111604772 A CN 202111604772A CN 114271242 A CN114271242 A CN 114271242A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention relates to a corbicula fluminea towing harrow net device for fishing, which is characterized by comprising a ship body, a traction frame, a net lifting and placing mechanism and a towing harrow net mechanism; the front part of the bow of the ship body is provided with a traction frame, the tail part of the ship body is provided with a net lifting and releasing mechanism, and the rear part of the ship body is connected with a lifting drag-harrow net mechanism. The invention utilizes the gravity of the trawl net, the traction force of the fishing boat and the hydraulic power, adjusts the acting force direction of the net mouth of the corbicula fluminea trawl net to reach the preset sludge eating depth by adjusting the length proportion of the upper mouth line and the bottom mouth line and the water power of the water dividing strip under the action of water flow, thereby leading the net mouth of the trawl net to rake at the proper depth on the surface layer of the sludge of the water body, filtering impurities at the water bottom, screening out the required adult corbicula fluminea product, saving time and labor, and being low-carbon and high-efficiency.
Description
Technical Field
The invention relates to the technical field of corbicula fluminea drag harrow nets, in particular to a corbicula fluminea drag harrow net device for fishing and an application method thereof.
Background
The corbicula fluminea is two small aquatic organisms living on the surface layer of water sludge and has similar habits, the resources are very rich, the storage amount of a plurality of lakes and river corbicula fluminea is astonishing, the place with water has the corbicula fluminea or corbicula fluminea, the corbicula fluminea and corbicula fluminea have strong population advantages, the number of ground corbicula fluminea with more corbicula fluminea is less, and vice versa. With the improvement of living standard of people, the corbicula fluminea becomes more and more pretty aquatic products in domestic and foreign markets, and the development and utilization prospect of the corbicula fluminea is very wide after the corbicula fluminea is exported and earmarked for foreign exchange. The traditional snail clam catching mode mainly comprises a snail suction machine, a net, a rake, a trawl and the like. At present, the great destructiveness of the snail suction machine on the resource environment is forbidden by relevant departments for fishing, and due to the large labor intensity, the trawl can not control the mud-eating depth because of the softness of the steel rope, the harvesting efficiency is low, the impurities at the water bottom can not be filtered, and the like, become bottlenecks which restrict the high-quality development of the Corbicula fluminea industry.
The utility model provides a fishing small clam of snail drag harrow net device is innovative prepositions traction force to with the corresponding preposition of drag harrow net to hull rear portion, utilize drag the gravity of harrow net itself, fishing boat traction force and hydraulic power, through adjusting the length ratio of head line and foot line, and divide the direction auxiliary action of water strip in rivers hydrodynamic force, make the small clam of snail drag the preceding net mouth sill of harrow net reach the mud depth of eating of settlement, thereby make drag the harrow net harrow the suitable degree of depth in water silt top layer and rake, filter submarine impurity, select the adult small clam of snail product of needs, labour saving and time saving, low carbon is high-efficient.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a corbicula fluminea drag harrow net device for fishing and an application method thereof.
The purpose of the invention is realized by the following technical scheme:
a corbicula fluminea towing harrow net device for fishing comprises a ship body, a towing frame, a net lifting and releasing mechanism and a towing harrow net mechanism; the front part of the bow of the ship body is provided with a traction frame, the tail part of the ship body is provided with a net lifting and releasing mechanism, and the rear part of the ship body is connected with a lifting drag-harrow net mechanism.
The traction frame is a combined structure which is used for supporting a traction balancing rod by three or more than three supporting rods at the position of a ship head close to a waterline, the length of the traction balancing rod is smaller than the width of the ship, two ends of the traction balancing rod are provided with circular rings, the circular rings are connected with traction ropes, and the rear ends of the traction ropes are connected with a drag harrow net mechanism.
The net lifting and releasing mechanism comprises an H-shaped base formed by connecting two hollow circular upright posts at the tops with a middle cross rod; a rotatable hanging rod is inserted into the hollow part at the top end of the upright post, a pulley is arranged at the outer end of the hanging rod, and the pulley is wound with a lifting rope; the hydraulic lifting motor is arranged at the right angle of the upright post and the cross rod, one end of the lifting rope is connected with the hydraulic lifting motor, and the other end of the lifting rope is connected with the towing and raking net mechanism, so that the towing and raking net mechanism is lifted and released, the whole towing and raking net mechanism is exquisite and smooth, the structure is compact, the space and the manpower are saved, and fishing objects such as corbicula maculoides are caught and taken down at one time.
It should be noted that, when the boom is perpendicular to the outer side of the ship body, the rotation direction of the lifting rope at the lower part of the boom is on the same plane with the rotation direction of the hydraulic lifting motor, at this time, the hydraulic lifting motor operates smoothly when lifting the towing rake net mechanism, when the towing rake net mechanism is lifted to a set height, the hydraulic lifting motor stops and is locked, at this time, the boom is turned to the upper part of the cabin at the inner side of the ship body, and the lifting rope wound on the wheel disc of the hydraulic lifting motor is connected stably and cannot fall off.
Drag harrow net mechanism, including drag harrow net skeleton combination, four root of mouth lines and net bag, its skeleton is a prolate cuboid turriform steel reinforcement skeleton structure, does respectively: the front net mouth upper beam, the front net mouth bottom beam, the two front net mouth side columns, the rear net mouth upper beam, the rear net mouth bottom beam, the two rear net mouth side columns and the four net mouth cross beams; wherein the two groups of net mouth upper beams and the two groups of net mouth bottom beams have the same length and are smaller than the width of the ship. The length of the net mouth upper beam and the net mouth bottom beam which are matched with the common small fishing boat is about 2M, the length of the net mouth cross beam is 1/2 and about 1M of the length of the net mouth upper beam or the net mouth bottom beam, the height of a front net mouth side column is about 20CM, and the height of a rear net mouth side column is about 30 CM.
It should be noted that, the design of the framework of the drag harrow basically satisfies the requirement that when the drag harrow net is operated, two drag harrow net monomers move along the side by side without being erected and leaving a blank, and meanwhile, the side column of the rear net mouth adopts a heightening design with the height of about 30CM, so that the phenomenon that the net mouth eats mud too deeply when the mud in an operation place is deep can be effectively ensured, and the rear net mouth and the net bag still can keep high-position operation, so that the drag harrow net is not submerged into the mud, and the production is not influenced.
A water dividing strip with the width of 6CM and the downward inclination angle of 30 degrees with the horizontal plane is welded on the upper beam of the front net mouth of the drag harrow net mechanism in the forward direction, and a downward acting force is generated under the action of hydrodynamic force so as to assist in adjusting the mud eating depth of the bottom beam of the front net mouth of the drag harrow net.
A net bottom rake tooth fence with the interval of 1.1CM is welded between a front net opening bottom beam and a rear net opening bottom beam of the drag rake net mechanism along the forward direction of the fishing boat by using thin steel bars; the front net mouth bottom beam and the two ends of the rear net mouth upper beam are respectively welded and connected by two net mouth side inclined pull beams to form an inclined plane rectangular square frame; the net mouth side inclined straining beams, the rear net mouth side column and the net mouth cross beam at the bottom form two triangular frames with the side faces, and the three frame planes are covered and wrapped by wire nets with the pore diameter of 4CM multiplied by 4CM to form an inclined plane square wire filter net and two triangular wire filter nets with the side faces; the net bottom rake teeth fence at the bottom, the inclined plane square iron wire filter screen at the upper part, the two side triangular iron wire filter screens at the two sides and the net bag at the rear part form a relatively closed loop containing bin for fish catches such as corbicula fluminea and the like. The aperture of the mesh of the wire filter screen is about 4CM multiplied by 4CM, when the fishing boat is filtered to move forward, the bottom beam at the front net opening of the drag harrow net is raked up, the oncoming fishery such as Corbicula fluminea enters the drag harrow net from the mesh of the wire filter screen, and large-particle impurities such as stones, mud blocks and the like are filtered by the wire filter screen and drift away along with water flow.
Four corners of a net opening in front of the drag harrow net are respectively connected with four headropes, specifically two upper headropes and two bottom headropes, and the other ends of the four headropes are respectively connected with a traction rope. In the production practice, the length proportion of the two bottom mouth lines and the bottom mouth lines is adjusted according to different production conditions of depth and scarcity of sludge in a water area, and the two bottom mouth lines and the two top mouth lines are close to each other in length if the sludge is deep and thin; when the sludge is shallow and hard, the lengths of the two bottom oral lines are shorter than the lengths of the two upper oral lines so as to control the sludge eating depth of the net mouth of the drag harrow net.
The middle part of the upper beam of the front net opening of the drag harrow net is welded with a ring, and the ring is connected with one end of a lifting rope so as to lift and release the drag harrow net mechanism.
The rear part of the drag harrow net framework is connected with a net bag, the net bag is a nylon net with the aperture of 1.2CM multiplied by 1.2CM and is used for containing fish-catches such as Corbicula fluminea and filtering corbicula fluminea seedlings, the lower part of the net bag is connected with a protective net piece, the protective net piece is polyethylene dense mesh net cloth and is used for protecting the net bag and reducing the friction between the net bag and hard obstacles such as stones at the bottom of a water body.
An application method of a corbicula fluminea towing rake net device for fishing comprises the following technical steps:
firstly, a fishing boat assembled with the corbicula fluminea trawling net device is driven to a designated fishing ground, the length proportion of an upper opening line and a bottom opening line is adjusted according to the water depth, the water flow direction and the sludge characteristic conditions of the fishing ground, then the suspension arm and the trawling net are pushed to turn to the outer side of a boat body, a hydraulic lifting motor is started to slowly put the trawling net mechanism into water to the bottom, the hydraulic lifting motor is stopped, the length of a traction rope is adjusted to enable a suspension rod to be vertical to the boat body, and the fishing boat is started to drag the trawling net mechanism to uniformly advance. After 15-20 minutes, reducing the accelerator to stop the ship speed, starting a hydraulic lifting motor to lift the drag harrow net mechanism to a set height, pulling the suspension arm and the drag harrow net mechanism to rotate above a cabin on the inner side of the ship body, unfastening a movable rope buckle at the tail part of a net bag, taking down the harvested fish such as corbicula and the like, repeating the steps until the cabin is full of fish, collecting the drag harrow net mechanism, and returning to the navigation after stable bundling.
Compared with the prior art, the invention has the following positive effects:
the drag harrow net traction force and the drag harrow net mechanism are innovatively arranged in front, the production operation radius is reduced, the fishing boat action is more flexible, the corresponding drag harrow net mechanism is moved forwards to the rear tail part of the fishing boat, two single drag harrow nets move along shoulders during production operation, no frame is arranged between the drag harrow net mechanism and the drag harrow net mechanism, the operation is more convenient and labor-saving, and the timeliness is stronger.
The invention adopts the towing rake net with the steel frame structure, utilizes the gravity of the towing rake net, and adapts to different bottom material production operation conditions through the double adjusting function of the diversion design of the water diversion strips and the length proportion of the bottom lines of the upper lines, and the mud eating effect is better. Meanwhile, the height of the rear net mouth side column is about 30CM, so that when sludge in a working place is deep, the net mouth can eat the sludge too deeply, the rear net mouth and the net bag can still keep high-position operation, the rear net mouth and the net bag cannot be submerged into the sludge, the production operation effect is not influenced, and the mining and catching efficiency is higher.
The invention adopts the filter screen design, so that the first production link of the corbicula fluminea and other fisheries at the water bottom is primarily screened, and the method is more energy-saving, lower in carbon and high in efficiency.
Drawings
Fig. 1 is a schematic view of the whole structure of a corbicula fluminea fishing trawl net device.
Fig. 2 is a schematic view of the drag harrow mechanism in a bottom view.
Fig. 3 is a schematic front view of the net lifting and releasing mechanism.
The labels in the figures are:
1. a hull;
2. a traction frame;
3. a net lifting and releasing mechanism;
4. a drag harrow net mechanism;
5. a strut;
6. a traction balancing pole;
7. a hauling rope;
8. a column;
9. a cross bar;
10. a boom;
11. a pulley;
12. lifting a lifting rope;
13. a hydraulic hoisting motor;
14. the front net opening is put on the beam;
15. a front mesh opening bottom beam;
16. the rear net mouth is put on the beam;
17. a rear net mouth bottom beam;
18.1, front net mouth side columns;
18.2, rear net mouth side columns;
19. a net mouth beam;
20. the side surface of the net port is obliquely pulled to form a beam;
21. raking teeth at the bottom of the net;
22. an inclined plane iron wire filter screen;
23. a side iron wire filter screen;
24. a head line;
25. a bottom slogan;
26. a mesh bag;
27. a mesh protecting sheet.
Detailed Description
The following provides a specific embodiment of the corbicula fluminea towing net device for fishing and an application method thereof.
Example 1
Referring to fig. 1, 2 and 3, a corbicula fluminea dragging net device for fishing comprises a ship body 1, a traction frame 2, a net lifting and placing mechanism 3 and a dragging and raking net mechanism 4. The front part of the bow of the ship body 1 is provided with a traction frame 2, the tail part of the ship body 1 is provided with a net lifting mechanism 3, and the rear part of the ship body 1 is connected with a lifting drag-harrow net mechanism 4.
The optimized traction frame 2 is a combined structure that a traction balance rod 6 is supported by three or more than three support rods 5 at the position of a bow close to a waterline, the length of the traction balance rod 6 is smaller than the width of a ship, two ends of the traction balance rod 6 are provided with circular rings, the circular rings are connected with traction ropes 7, and the rear ends of the traction ropes 7 are connected with a drag harrow net mechanism 4.
The preferable net lifting and placing mechanism 3 comprises an H-shaped base formed by connecting two round upright posts 8 with hollow tops and a middle cross bar 9;
a rotatable suspender 10 is inserted in the hollow part of the top end of the upright post 8, a pulley 11 is arranged at the outer end of the suspender 10, and the pulley 11 is wound on a lifting rope 12; the right angle of the upright post 8 and the cross rod 9 is provided with a hydraulic lifting motor 13, one end of a lifting rope 12 is connected with the hydraulic lifting motor 13, the other end of the lifting rope is connected with the trawling and raking net mechanism 4, so that the trawling and raking net mechanism 4 is lifted and released, the whole body of the trawling and raking net mechanism 3 is smooth, the structure is exquisite and compact, the space and the manpower are saved, and fishing objects such as corbicula fluminea and the like are caught and taken down at one time.
It should be noted that: when the suspender 10 is perpendicular to the outer side of the ship body 1, the rotation directions of the lifting rope 12 at the lower part of the suspender are on the same plane with the rotation direction of the hydraulic lifting motor 13, at this time, the action of the hydraulic lifting motor 13 for lifting the trawling and raking net mechanism 4 is smooth, when the trawling and raking net mechanism 4 is lifted to a set height, the hydraulic lifting motor 13 stops and is locked, at this time, when the suspender 10 together with the trawling and raking net mechanism 4 turns to the upper part of the cabin at the inner side of the ship body 1, the lifting rope 12 wound on the wheel disc of the hydraulic lifting motor 13 is stably connected and cannot slide down.
The preferred drag harrow net mechanism 4 comprises drag harrow net skeleton combination, four headropes (24, 25) and net sac 26, the skeleton is a flat rectangular tower-shaped steel reinforcement skeleton structure, and the structure is as follows: a front net mouth upper beam 14, a front net mouth bottom beam 15, two front net mouth side columns 18.1, a rear net mouth upper beam 16, a rear net mouth bottom beam 17, two rear net mouth side columns 18.2 and four net mouth cross beams 19. Wherein the lengths of the two groups of net mouth upper beams (14, 16) and the two groups of net mouth bottom beams (15, 17) are equal and less than the width of the ship.
The lengths of the net mouth upper beams (14, 16) and the net mouth bottom beams (15, 17) which are matched with the common small fishing boat are about 2M, the length of the net mouth cross beam 19 is 1/2 which is about 1M of the length of the net mouth upper beams (14, 16) or the net mouth bottom beams (15, 17), the height of a front net mouth side column 18.1 is about 20CM, and the height of a rear net mouth side column 18.2 is about 30CM, so that a gradient is formed.
It should be noted that: the design of the framework scale of the drag harrow net basically meets the requirement that when production operation is carried out, two drag harrow net monomers move along the shoulder without taking a frame in the middle and leaving no operation blank, and meanwhile, the rear net mouth side column 18.2 adopts a heightening design with the height of about 30CM, so that when sludge in an operation place is deep, the net mouth eats the sludge too deeply, the rear net mouth and the net bag still can keep high-position operation, and the drag harrow net can not sink into the sludge to influence the production.
The upper beam 14 of the front net mouth of the preferred drag harrow mechanism 4 is welded with a water diversion strip which is 6CM wide and forms a downward inclination angle of 30 degrees with the horizontal plane in the forward direction, and the water diversion strip generates a downward acting force under the action of hydrodynamic force so as to assist in adjusting the mud eating depth of the bottom beam 15 of the front net mouth of the drag harrow mechanism.
The fence of the net bottom rake teeth 21 with the interval of 1.1CM is welded between the front net mouth bottom beam 15 and the rear net mouth bottom beam 17 of the preferred drag harrow net mechanism 4 along the advancing direction of the fishing boat by thin steel bars; the front net mouth bottom beam 15 and the two ends of the rear net mouth upper beam 16 are respectively welded and connected by two net mouth side inclined pull beams 20 to form an inclined plane rectangular frame; the net mouth side inclined straining beam 20, the rear net mouth side column 18.2 and the net mouth cross beam 19 at the bottom form two side triangular frames, and three frame planes are covered and wrapped by wire nets with the pore diameter of 4CM multiplied by 4CM to form an inclined plane square wire filter net 22 and two side triangular wire filter nets 23; the bottom of the net is a rake teeth 21 fence, the upper inclined plane square iron wire filter screen 22, the two side triangular iron wire filter screens 23 on the two sides and the rear net bag 26 form a relatively closed loop containing bin for fish catches such as corbicula fluminea. The aperture of the mesh of the wire screen is about 4CM multiplied by 4CM, when the fishing boat is filtered to move forward, the bottom beam 15 at the front net mouth of the drag harrow screen mechanism 4 is raked up, the oncoming fishery such as Corbicula fluminea enters the drag harrow screen from the mesh of the wire screen, and large-particle impurities such as stones, mud blocks and the like are filtered by the wire screen and drift away along with water flow.
Four corners of a front net opening of the preferred drag harrow net are respectively connected with four headropes (24, 25), specifically two upper headropes (24), two bottom headropes (25), and the other ends of the four headropes (24, 25) are respectively connected with the traction rope (7). In the production practice, the length proportion of the two bottom headrope lines 24 to the bottom headrope lines 25 is adjusted according to different production operation conditions of depth and scarcity of the sludge in the water body of the fishing ground, and the two bottom headrope lines 25 are close to the two top headrope lines 24 in length if the sludge is deep and thin; when the sludge is shallow and hard, the lengths of the two bottom ropes 25 are shorter than the lengths of the two upper ropes 24, so as to control the sludge eating depth of the net mouth of the drag harrow net.
Preferably, a ring is welded in the middle of the upper beam 14 of the front net opening of the drag harrow net mechanism 4, and the ring is connected with one end of the lifting rope 12 to lift and release the drag harrow net mechanism 4.
The rear part of the preferred drag harrow net framework is connected with a net bag 26, the net bag 26 is a nylon net with the aperture of 1.2CM multiplied by 1.2CM and is used for containing fish catches such as corbicula fluminea and filtering corbicula fluminea seedlings, the lower part of the net bag 26 is connected with a net protecting sheet 27, the net protecting sheet 27 is polyethylene close-meshed net cloth and is used for protecting the net bag 26 and reducing friction between the net bag 26 and hard obstacles such as stones at the bottom of a water body.
The preferable application method of the corbicula fluminea fishing trawling net device comprises the following technical steps:
firstly, a fishing boat 1 assembled with a corbicula fluminea drag harrow net device is driven to a designated fishing ground, the length proportion of an upper opening line 24 and a bottom opening line 25 is adjusted according to the water depth, the water flow direction and the sludge characteristic condition of the fishing ground, then a suspender 10 and a drag harrow net mechanism 4 are pushed to turn to the outer side of a boat body 1, a hydraulic hoisting motor 13 is started to slowly put the drag harrow net mechanism 4 into water to the bottom, the hydraulic hoisting motor 13 is stopped, the length of a traction rope 7 is adjusted to enable the suspender 10 to be vertical to the boat body 1, and the fishing boat is started to drag the drag harrow mechanism to move forward at a uniform speed. After 15 to 20 minutes, the accelerator is reduced to stop the ship speed, the hydraulic lifting motor 13 is started to lift the drag harrow net mechanism 4 to a set height, the suspender 10 and the drag harrow net mechanism 4 are pulled to rotate to the upper part of the cabin on the inner side of the fishing ship body 1, the movable rope buckle at the tail part of the net bag 26 is unfastened, the caught fish is taken upside down, the steps are repeated until the bin is full of the caught fish, the drag harrow mechanism 4 is folded, and the ship returns after the stable bundling is carried out.
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 (10)
1. A corbicula fluminea towing harrow net device for fishing is characterized by comprising a ship body, a traction frame, a net lifting and placing mechanism and a towing harrow net mechanism; the front part of the bow of the ship body is provided with a traction frame, the tail part of the ship body is provided with a net lifting and releasing mechanism, and the rear part of the ship body is connected with a towing and raking mechanism;
the traction frame is a combined structure which is used for supporting a traction balancing rod by three or more than three supporting rods at the position of a ship head close to a waterline, the length of the traction balancing rod is smaller than the width of the ship, two ends of the traction balancing rod are provided with circular rings, the circular rings are connected with traction ropes, and the rear ends of the traction ropes are connected with a drag harrow net mechanism.
2. The corbicula fluminea fishing trawling net device as claimed in claim 1, wherein the net lifting and releasing mechanism comprises an H-shaped base formed by connecting two hollow circular upright posts at the top and a middle cross bar;
a rotatable hanging rod is inserted into the hollow part at the top end of the upright post, a pulley is arranged at the outer end of the hanging rod, and the pulley is wound with a lifting rope; the right angle of the upright post and the cross rod is provided with a hydraulic hoisting motor, one end of the hoisting rope is connected with the hydraulic hoisting motor, and the other end of the hoisting rope is connected with the drag harrow net mechanism so as to hoist and lower the drag harrow net mechanism.
3. The corbicula fluminea towing net device for fishing according to claim 1, wherein the towing net mechanism comprises a towing net framework combination, four headlines and a net bag, the framework is a prolate cuboid tower-shaped steel bar framework structure, and the trawling net framework structure comprises: the ship comprises a front net mouth upper beam, a front net mouth bottom beam, two front net mouth side columns, a rear net mouth upper beam, a rear net mouth bottom beam, two rear net mouth side columns and four net mouth cross beams, wherein the lengths of the two groups of net mouth upper beams and the two groups of net mouth bottom beams are equal to each other and are smaller than the width of the ship;
the length of the net mouth upper beam and the net mouth bottom beam which are matched with the small fishing boat is 2M, the length of the net mouth cross beam is 1/2 of the length of the net mouth upper beam or the net mouth bottom beam and is 1M, the height of the front net mouth side column is 20CM, and the height of the rear net mouth side column is 30 CM.
4. The corbicula fishing trawl apparatus of claim 3, wherein the rear net mouth side column is designed with a height of about 30 CM.
5. The corbicula fluminea fishing trawling net device according to claim 3, wherein a water dividing strip with the width of 6CM and the downward inclination angle of 30 degrees with the horizontal plane is welded on the upper beam of the front net opening of the trawling net mechanism in the forward direction, and generates a downward acting force under the action of hydrodynamic force so as to assist in adjusting the mud eating depth of the trawling net.
6. The corbicula fluminea fishing trawling net device according to claim 3, wherein a net bottom rake tooth fence with 1.1CM spacing is welded between a front net opening bottom beam and a rear net opening bottom beam of the trawling net mechanism along the forward direction of a fishing boat by using thin steel bars; the front net mouth bottom beam and the two ends of the rear net mouth upper beam are respectively welded and connected by two net mouth side inclined pull beams to form an inclined plane rectangular square frame; the net mouth side inclined pull beam, the rear net mouth side column and the net mouth cross beam at the bottom form two side triangular frames; covering and wrapping the three frame planes by using wire nets with the pore diameters of 4CM multiplied by 4CM to form an inclined plane square wire filter screen and two side face triangular wire filter screens; the net bottom rake teeth fence at the bottom, the inclined plane square iron wire filter screen at the upper part, the two side triangular iron wire filter screens at the two sides and the net bag at the rear part form a relatively closed loop containing bin for fish catches such as corbicula fluminea and the like.
7. The corbicula fluminea fishing trawling net device as claimed in claim 3, wherein four corners of a front net opening of the trawling net are respectively connected with four headropes, specifically two upper headropes and two bottom headropes, and the other ends of the four headropes are respectively connected with a traction rope.
8. The corbicula fluminea fishing trawling net device as claimed in claim 3, wherein a ring is welded in the middle of the upper beam of the front net opening of the trawling net, and the ring is connected with one end of the lifting rope to lift and place the trawling net mechanism.
9. The corbicula fluminea fishing trawling net device as claimed in claim 3, wherein the rear part of the trawling net skeleton is connected with a net bag, and the net bag is a nylon net with the aperture of 1.2CM x 1.2 CM; the lower part of the net bag is connected with a protective net piece which is polyethylene close-meshed net cloth.
10. An application method of a corbicula fluminea towing harrow device for fishing is characterized by comprising the following technical method steps:
firstly, a fishing boat provided with a corbicula fluminea drag harrow net device is driven to a designated fishing ground, the length ratio of an upper opening line to a bottom opening line is adjusted according to the operating conditions of the fishing ground, then a suspension arm and a drag harrow net mechanism are pushed to turn to the outer side of a boat body, a hydraulic hoisting motor is started to slowly put the drag harrow net mechanism into water to the bottom of the water, the hydraulic hoisting motor is stopped, the length of a traction rope is adjusted to enable a suspension rod to be vertical to the boat body, and the fishing boat is started to drag the drag harrow net mechanism to uniformly advance; after 15-20 minutes, reducing the accelerator to stop the ship speed, starting a hydraulic lifting motor to lift the drag harrow net mechanism to a set height, pulling the suspension arm and the drag harrow net mechanism to rotate above a cabin on the inner side of the ship body, unfastening a movable rope buckle at the tail part of a net bag, taking down the harvested fish such as corbicula and the like, repeating the steps until the cabin is full of fish, collecting the drag harrow net mechanism, and returning to the navigation after stable bundling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111604772.2A CN114271242B (en) | 2021-12-24 | 2021-12-24 | Fishing corbicula fluminea drag harrow net device and application method thereof |
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| CN202111604772.2A CN114271242B (en) | 2021-12-24 | 2021-12-24 | Fishing corbicula fluminea drag harrow net device and application method thereof |
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| CN114271242A true CN114271242A (en) | 2022-04-05 |
| CN114271242B CN114271242B (en) | 2022-11-25 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361528A (en) * | 1993-05-25 | 1994-11-08 | Peacock Francis E N | Trawling system and trawl device for shrimp |
| CN105216977A (en) * | 2015-10-30 | 2016-01-06 | 中国水产科学研究院淡水渔业研究中心 | A kind of Eriocheir sinensis Danish seine dredge |
| CN111011320A (en) * | 2019-12-14 | 2020-04-17 | 山东省海洋生物研究院 | Shellfish collecting tool |
| CN112806288A (en) * | 2020-12-31 | 2021-05-18 | 大连海洋大学 | Floating raft culture method of Ruditapes philippinarum' zebra clam No. 2 |
| CN112868608A (en) * | 2021-01-12 | 2021-06-01 | 华南农业大学 | Multilayer deep water area fishing device for fish resource investigation |
| CN213784932U (en) * | 2020-10-29 | 2021-07-27 | 罗定市俊业水产品有限公司 | Fishing device |
| CN214206882U (en) * | 2021-01-18 | 2021-09-17 | 费香东 | Slide plate on single-ship bilateral trawl net |
-
2021
- 2021-12-24 CN CN202111604772.2A patent/CN114271242B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361528A (en) * | 1993-05-25 | 1994-11-08 | Peacock Francis E N | Trawling system and trawl device for shrimp |
| CN105216977A (en) * | 2015-10-30 | 2016-01-06 | 中国水产科学研究院淡水渔业研究中心 | A kind of Eriocheir sinensis Danish seine dredge |
| CN111011320A (en) * | 2019-12-14 | 2020-04-17 | 山东省海洋生物研究院 | Shellfish collecting tool |
| CN213784932U (en) * | 2020-10-29 | 2021-07-27 | 罗定市俊业水产品有限公司 | Fishing device |
| CN112806288A (en) * | 2020-12-31 | 2021-05-18 | 大连海洋大学 | Floating raft culture method of Ruditapes philippinarum' zebra clam No. 2 |
| CN112868608A (en) * | 2021-01-12 | 2021-06-01 | 华南农业大学 | Multilayer deep water area fishing device for fish resource investigation |
| CN214206882U (en) * | 2021-01-18 | 2021-09-17 | 费香东 | Slide plate on single-ship bilateral trawl net |
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| CN114271242B (en) | 2022-11-25 |
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