Lantern fish catching netting gear and operation method

Abstract

The invention discloses a lantern fish catching netting gear and an operation method, and relates to the technical field of deep sea fishing. The fishing net has the design innovation that the fishing net can be used when a fishing boat is anchored, can also be used when the fishing boat advances, can be anchored when water flow is large enough, can be dragged when the water flow is small, and can be used under the action of the water flow underwater, and the telescopic beam at the front part of the fishing net can extend to increase the length; the net opening can be expanded horizontally to a great extent; when the net is collected, the truss rod can be automatically retracted into the main truss rod pipe, so that the truss rod can be conveniently collected at a stern; a guide net and a luminous belt are arranged at the front end of the netting gear and used for gathering fishes and guiding the fishes into the net, a luminous separation net grid is arranged at the front end of a net opening, the separation net can block large fishes and mammals and can trap small fishes into the net, a net bag part is connected with a pumping system, the fishes in a net bag can be continuously conveyed to a ship, and the net bag part is connected with the pumping system. Frequent net hauling is not needed, and damage to fishes is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deep-sea fishing, and in particular to a lanternfish fishing net and an operating method. BACKGROUND

[0002] Lanternfish is a key species in the middle and lower layer of the deep-sea ecosystem and a potential high-quality resource for pelagic fishery. With the increasing development of deep-sea fishery, the demand for large-scale fishing of lanternfish is becoming increasingly urgent. Lanternfish mainly inhabit the middle and lower layers of the deep sea at a depth of 200-1000 meters, and has ecological habits such as low cluster density and vertical migration day and night, which puts strict requirements on the net mouth stability, operation flexibility and efficiency of the fishing net. At present, deep-sea lanternfish fishing mainly relies on traditional trawl technology. The existing deep-sea trawl technology mainly uses net plate trawl and beam trawl. The net plate trawl realizes horizontal expansion of the net mouth through the water power of the net plate, and the vertical opening is controlled by the cooperation of the float and the sinker, but the shape of the net mouth highly depends on the towing speed: increasing the towing speed can increase the horizontal expansion force of the net plate, but it is easy to disperse the lanternfish cluster; at low towing speed, the water power of the net plate is insufficient, and the horizontal expansion ability is significantly reduced, resulting in a decrease in the net mouth area and the filtering efficiency, and it is difficult to effectively capture the cluster target. At the same time, the vertical opening depends on the balance of buoyancy and gravity, and cannot accurately match the specific habitat layer of lanternfish, which easily leads to missed capture or capture of non-target species, further reducing the fishing selectivity. The beam trawl supports the net mouth by rigid beam, and the shape is stable and not limited by the towing speed, but the existing beam trawl uses fixed length beam, and the length is limited by the design of the ship (usually approximately the width of the stern), resulting in a fixed and limited net mouth area. In addition, the existing beam trawl cannot flexibly adapt to the habits of vertical migration of lanternfish day and night, which limits the increase of the fishing amount per unit time. In summary, the existing trawl technology cannot realize efficient operation in lanternfish fishing, and has the problems of low fishing efficiency and high energy consumption. SUMMARY

[0003] The purpose of the present application is to provide a lanternfish fishing net and an operating method to solve the above problems.

[0004] To solve the above technical problems, the present application adopts the following technical solutions:

[0005] The application discloses a lantern fish fishing net, which comprises a fishing boat, a fishing net and a self-expanding component arranged between the fishing boat and the fishing net, the self-expanding component is connected with a driving component on the fishing boat through a connecting component one, an anchor rope is connected with the fishing boat, and an anchor is connected with the other end of the anchor rope; the fishing net comprises a funnel-shaped net body and a net bag connected with the neck end of the net body, a transversely arranged floater frame and a sinker frame are connected with two vertically arranged net mouth side frames on the net mouth end of the net body, the two ends of the two net mouth side frames are respectively connected with the two ends of the floater frame and the sinker frame, the net mouth end of the net body is connected with the self-expanding component through a connecting component two, the tail of the net bag is connected with the fishing boat through a conveying component, the conveying component comprises a fish conveying pipe and a fish suction pump connected with the fish conveying pipe, one end of the fish conveying pipe is connected with the tail of the net bag, and the other end of the fish conveying pipe is arranged on the fishing boat; a guide net is arranged in the net body, a light-emitting belt is arranged in the center of the guide net, one end of the guide net and the light-emitting belt is fixed on the neck end of the net body, and the other end is connected with the self-expanding component; and a light-emitting net grid is arranged on the inlet end of the net body.

[0006] Further, the self-expanding component comprises a hollow main truss rod and left and right telescopic trusses respectively inserted into the inside of the two ends of the main truss rod, a plurality of symmetrically arranged left telescopic truss expanding wings and right telescopic truss expanding wings are respectively arranged on the left and right telescopic trusses, one end of the left and right telescopic trusses inserted into the main truss rod is connected with the inside of the main truss rod through a tension component, and the other end of the left and right telescopic trusses is respectively connected with a left expanding wing plate and a right expanding wing plate; a guide net front edge frame is connected with the end of the guide net, a main truss rod rear right inner release buckle, a main truss rod rear center release buckle and a main truss rod rear left inner release buckle are connected with the guide net front edge frame, and the main truss rod rear right inner release buckle, the main truss rod rear center release buckle and the main truss rod rear left inner release buckle are connected with the main truss rod through a main truss rod right rear fork frame connecting ring, a main truss rod center rear fork frame connecting ring and a main truss rod left rear fork frame connecting ring.

[0007] Further, the tension component comprises a main truss rod center fixed plate fixed on the middle position of the inside of the main truss rod, left and right constant tension devices are connected with the left and right sides of the main truss rod center fixed plate through constant tension device supports, the end of the left telescopic truss is connected with a constant tension spring piece on the left constant tension device through a connecting rope, and the end of the right telescopic truss is connected with a right telescopic truss fixed plate.

[0008] Further, the end of the main truss rod is provided with a main truss rod limiting plate, the left and right telescopic trusses placed on one end of the main truss rod are provided with telescopic truss extension stoppers corresponding to the main truss rod limiting plate, one side of the telescopic truss extension stopper is provided with a telescopic truss balance sliding block, the other end of the left and right telescopic trusses is provided with telescopic truss contraction upper stoppers and telescopic truss contraction lower stoppers.

[0009] Further, the left and right expansion wing plates each include an expansion wing main wing plate connected to the telescopic truss curved plate at the end of the left and right telescopic trusses, the expansion wing main wing plate is connected with an expansion wing guide plate, the expansion wing main wing plate and the expansion wing guide plate are each connected with an expansion wing muscle plate one, an expansion wing muscle plate two, an expansion wing muscle plate three, an expansion wing muscle plate four and an expansion wing muscle plate five.

[0010] Further, the connecting assembly one includes a left expansion wing fork, a left float, a left truss rod fork, a center fork, a right truss rod fork, a right float and a right expansion wing fork, one end of the left expansion wing fork, the left float, the left truss rod fork, the center fork, the right truss rod fork, the right float and the right expansion wing fork is connected to a connecting point, the connecting point is connected to the driving assembly through a cable, the other end of the left and right expansion wing forks is connected with an expansion wing front fork carabiner, the two expansion wing front fork carabiners are respectively connected to the expansion wing front fork holes on the left and right expansion wing plates, the other end of the left float and the left truss rod fork is connected to the main truss rod through a main truss rod front left carabiner, the other end of the center fork is connected with a main truss rod front center carabiner, the main truss rod front center carabiner is connected to the main truss rod through a main truss rod center front fork connecting ring, the right truss rod fork and the right float are connected to a main truss rod front right carabiner, the main truss rod front right carabiner is connected to the main truss rod through a main truss rod front right connecting ring.

[0011] Further, the driving assembly includes a gill net machine installed on the fishing boat, and the end of the cable is connected to the gill net machine.

[0012] Further, the connecting assembly two includes a left upper pull cable, a right upper pull cable, a left upper expansion cable, a right upper expansion cable, a left lower pull cable, a right lower pull cable, a left lower expansion cable and a right lower expansion cable, one end of the left upper pull cable and the right upper pull cable is connected on the two ends of the float cable respectively, the other end of the left upper pull cable and the right upper pull cable is connected with the main truss rod rear left outer shackles and the main truss rod rear right outer shackles respectively, the main truss rod rear left outer shackles and the main truss rod rear right outer shackles are connected on the main truss rod through the main truss rod rear left connecting ring and the main truss rod rear right connecting ring respectively, one end of the left upper expansion cable, the right upper expansion cable, the left lower expansion cable and the right lower expansion cable is connected on the net opening side cable respectively, the other end of the left upper expansion cable and the left lower expansion cable is connected on the left expansion wing rear fork cable, the other end of the left expansion wing rear fork cable is connected with the left expansion wing rear fork cable shackle, the left expansion wing rear fork cable shackle is connected on the left expansion wing rear fork cable hole on the left expansion wing plate, the other end of the right upper expansion cable and the right lower expansion cable is connected on the right expansion wing rear fork cable, the other end of the right expansion wing rear fork cable is connected with the right expansion wing rear fork cable shackle, the right expansion wing rear fork cable shackle is connected on the right expansion wing rear fork cable hole on the right expansion wing plate, the other end of the left lower pull cable and the right lower pull cable is connected on the main truss rod through the main truss rod rear left outer shackles and the main truss rod rear right outer shackles respectively.

[0013] Further, the stern of the fishing boat is provided with a hoisting assembly, the hoisting assembly includes a stern hoisting truss and a cable winch installed on the fishing boat, a fixed pulley is installed on the stern hoisting truss, and one end of the cable rope on the cable winch is connected with a lifting hook after passing through the fixed pulley.

[0014] An operating method of a lantern fish fishing net, comprising the following steps:

[0015] A. The net is stored in the net reel, and the net is unfolded by the auxiliary cable winch at the stern of the ship, and the net bag is pulled to the stern deck;

[0016] B. The net bag is connected to the pump suction system (fish conveying pipe), and is hoisted by the stern hoisting truss and is put into the sea at the stern of the ship, after the net enters the water, the water flow or the forward movement of the fishing boat makes the net and the fish conveying pipe gradually release into the sea, and the net reel is gradually released at the same time;

[0017] C. When the net opening reaches the stern, the net reel stops, and each part of the cable connected with the main truss rod and the net opening;

[0018] D. After the connection is completed, the main truss rod is hoisted into the water by the auxiliary stern hoisting truss, the cable (cable winch) is continuously released, the fish conveying pipe is synchronously released, and the operation is started after reaching the fish school water layer.

[0019] E. When the net is collected, the cable winch is used to wind the cable, until the main truss rod is wound to the water surface;

[0020] F, the connection point reaches the stern, and the winch on both sides of the stern is connected with the left and right two fishing lines, and the main truss rod is collected and pulled to the stern by the winch;

[0021] G, after fixing the truss rod, the winch and the fishing line are disconnected, the fishing line connected to the net opening on both sides of the truss rod is connected to the two winches, and the net opening is continued to be collected and wound, until the net opening is collected and pulled to the stern, and the net opening is fixed to the deck of the ship;

[0022] H, the fishing line connected to the net opening is connected to the fishing line of the net winding machine, the net winding machine is operated, the net is collected and wound, and the fish conveying pipe is collected and wound at the same time, until the net is collected and wound on the ship.

[0023] Compared with the prior art, the beneficial technical effects of the present application are:

[0024] The design innovation of the present application is that the fishing net can be used when the fishing boat is anchored, and can also be used when the fishing boat is moving forward. When the water flow is large enough, the fishing net can be used by anchoring, and when the water flow is small, the fishing net can be used by towing. The front telescopic truss rod of the net is stretched to increase the length, which can expand the net opening horizontally to a large extent. When the net is collected, the truss rod can be automatically retracted into the main truss rod pipe, which is convenient for storage on the stern. The front end of the net is provided with a guide net and a light strip, which is used to gather fish and guide them into the net. The front end of the net opening is provided with a light separation net, which can block large fish and mammals, and can also attract small fish into the net. The pump suction system is connected to the net capsule, which can continuously convey the fish in the net capsule to the ship, without frequent net lifting, and reduces the damage to the fish. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in conjunction with the drawings.

[0026] Figure 1 Schematic diagram of fishing net operation for anchoring of fishing boat;

[0027] Figure 2 Schematic diagram of fishing net operation for anchoring of fishing boat;

[0028] Figure 3 Schematic diagram of fishing net operation for anchoring of fishing boat; Figure 1 ;

[0029] Figure 4 Schematic diagram of fishing net operation for anchoring of fishing boat; Figure 2 ;

[0030] Figure 5 Schematic diagram of fishing net operation for anchoring of fishing boat;

[0031] Figure 6 Schematic diagram of fishing net operation for anchoring of fishing boat;

[0032] Figure 7 Schematic diagram of fishing net operation for anchoring of fishing boat;

[0033] Figure 8 Figure 1 is a schematic view of the right telescopic boom in the extended position;

[0034] Figure 9 Figure 2 is a schematic view of the right extended wing in the extended position;

[0035] Figure 10 Figure 3 is a schematic view of the right extended wing in the retracted position;

[0036] Figure 11 Figure 4 is a schematic view of the right telescopic boom in the retracted position;

[0037] Figure 12 Figure 5 is a cross-sectional view of the tension assembly in the extended position of the boom;

[0038] Figure 13 Figure 6 is a cross-sectional view of the tension assembly in the retracted position of the boom;

[0039] Figure 14 Figure 7 is a schematic view of the right telescopic boom in the retracted position with the net being retracted;

[0040] Figure 15 Figure 8 is a schematic view of the right telescopic boom in the retracted position with the right extended wing in the retracted position;

[0041] Figure 16 Figure 9 is a schematic view of the extended wing structure parameters;

[0042] Explanation of reference numerals in the attached drawings: 1. Fishing boat; 2. Fish transport pipe; 3. Fishing net; 4. Towing line; 5. Anchor rope; 6. Anchor; 7. Stern crane truss; 8. Float line; 9. Fish suction pump; 10. Net bag; 11. Net body; 12. Booster line; 13. Right lower pull line; 14. Main truss; 15. Right upper pull line; 16. Right upper expansion line; 17. Left expansion wing plate; 18. Connection point; 19. Illuminated mesh; 20. Left upper pull line; 21. Guide net; 22. Left upper expansion line; 23. Left telescopic truss; 24. Left expansion wing fork line; 25. Left swimming line; 26. Left truss 27. Center fork; 28. Right truss fork; 29. ​​Right swing fork; 30. Right expander wing fork; 31. Right telescopic truss; 32. Right expander wing plate; 33. Right lower expander fork; 34. Illuminating strip; 35. Left lower pull fork; 36. Main truss front right shackle; 37. Main truss rear right outer shackle; 38. Main truss rear right inner shackle; 39. Main truss rear left inner shackle; 40. Main truss rear left outer shackle; 41. Main truss front left shackle; 42. Main truss front center shackle; 43. Telescopic truss retraction upper stop block; 44. Telescopic truss retraction lower stop block; 45. 46. ​​Extended wing front fork shackle; 47. Extended wing curved plate; 48. Extended wing front fork hole; 49. Extended wing stiffener plate one; 50. Extended wing stiffener plate two; 51. Extended wing stiffener plate three; 52. Extended wing stiffener plate four; 53. Extended wing guide plate; 54. Extended wing stiffener plate five; 55. Extended wing main wing plate; 56. Guide net leading edge line; 57. Right extended wing rear fork hole; 58. Right extended wing rear fork shackle; 59. Right extended wing rear fork; 60. Main truss front right connecting ring; 61. Main truss limiting plate; 62. Main truss rear right 63. Connecting ring; 64. Telescopic truss extension block; 65. Telescopic truss balance slider; 66. Main truss center front fork connecting ring; 67. Connecting rope; 68. Right constant tension device; 69. Constant tension device bracket; 70. Main truss center rear fork connecting ring; 71. Main truss rear center shackle; 72. Main truss center fixing plate; 73. Constant tension spring; 74. Left constant tension device; 75. Net winch; 76. Net winch; 77. Fixed pulley; 78. Hook; 79. Net opening side bar; 80. Left telescopic truss expansion wing; 81. Right telescopic truss fixing plate. Detailed Implementation

[0043] like Figures 1-16 As shown, a lanternfish fishing gear includes a fishing boat 1, a fishing net 3, and a self-expanding assembly disposed between the fishing boat 1 and the fishing net 3. The boat type in this embodiment is based on a single trawler fishing boat.

[0044] The self-expanding assembly comprises a hollow main girder 14 and left and right telescopic girders 23 and 31 respectively inserted into the interior of both ends of the main girder 14. The main girder 14 is a circular steel pipe with a diameter of 500 mm, a wall thickness of 10 mm and a length determined according to the width of the stern of the ship. In this embodiment, the width of the stern of the ship is 12 meters, so the length of the main girder is 10 meters. The left and right telescopic girders 23 and 31 are respectively provided with a plurality of left and right telescopic girder expansion wings 79 and 45 symmetrically arranged. The left and right telescopic girder expansion wings 79 and 45 are respectively welded to the middle of the upper and lower two curved panels of the left and right telescopic girders. The structure is a single curved panel with a thickness of 6 mm. When the telescopic girders are extended outward, the expansion wings generate expansion force to assist the expansion of the net mouth and increase the expansion force. In this embodiment, the chord length (chord) l3 of the single telescopic girder expansion wing is 0.5 meters, the wing span (height) is 0.4 meters, and the camber is 0.12. The angle β between the chord length l3 and the water flow V is 37 degrees.

[0045] The self-expanding assembly is connected to the driving assembly on the fishing boat 1 through a connecting assembly one. The fishing boat 1 is connected to an anchor rope 5, and the other end of the anchor rope 5 is connected to a ship anchor 6.

[0046] The connecting assembly one comprises left expansion wing fork assemblies 24, left traveling assemblies 25, left girder fork assemblies 26, a center fork assembly 27, right girder fork assemblies 28, right traveling assemblies 29 and right expansion wing fork assemblies 30. One end of each of the left expansion wing fork assemblies 24, the left traveling assemblies 25, the left girder fork assemblies 26, the center fork assembly 27, the right girder fork assemblies 28, the right traveling assemblies 29 and the right expansion wing fork assemblies 30 is connected to a connecting point 18. The connecting point 18 is connected to the driving assembly through a traveling rope 4. The other end of each of the left expansion wing fork assemblies 24 and the right expansion wing fork assemblies 30 is connected to an expansion wing front fork assembly shackle 46. The two expansion wing front fork assembly shackles 46 are respectively connected to expansion wing front fork assembly holes 48 on the left expansion wing plate 17 and the right expansion wing plate 32. The other end of each of the left traveling assemblies 25 and the left girder fork assemblies 26 is connected to the main girder 14 through a main girder front left shackle 41. The other end of the center fork assembly 27 is connected to a main girder front center shackle 42. The main girder front center shackle 42 is connected to the main girder 14 through a main girder center front fork assembly connecting ring 65. The right girder fork assemblies 28 and the right traveling assemblies 29 are connected to a main girder front right shackle 36. The main girder front right shackle 36 is connected to the main girder 14 through a main girder front right connecting ring 60.

[0047] The driving assembly comprises a net twister 74 installed on the fishing boat 1. The end of the traveling rope 4 is connected to the net twister 74.

[0048] The fishing net 3 comprises a funnel-shaped net body 11 and a net bag 10 connected to the narrow end of the net body 11, and the mesh size of the fishing lamprey net in the embodiment is 10 mm. The rear end of the net bag is connected to a fish suction pump for continuous fishing operation.

[0049] The net mouth end of the net body 11 is connected with a transversely arranged float bar 8 and a sinker bar 12 and two vertically arranged net mouth side bars 78, the two ends of the two net mouth side bars 78 are respectively connected to the two ends of the float bar 8 and the sinker bar 12, the float bar 8 is the upper bar of the net mouth, and the float ball support is tied and bound to provide buoyancy, and the sinker bar 12 cooperates with the upper and lower expansion of the net mouth, and the net mouth end of the net body 11 is connected with the self-expanding assembly through the connecting assembly two.

[0050] The connecting assembly two comprises a left upper pull bar 20, a right upper pull bar 15, a left upper expansion bar 22, a right upper expansion bar 16, a left lower pull bar 35, a right lower pull bar 13, a left lower expansion bar and a right lower expansion bar 33, the end portions of the left upper pull bar 20 and the right upper pull bar 15 are respectively connected to the two ends of the float bar 8, the other ends of the left upper pull bar 20 and the right upper pull bar 15 are respectively connected with a main spar rear left outer shackles 40 and a main spar rear right outer shackles 37, the main spar rear left outer shackles 40 and the main spar rear right outer shackles 37 are respectively connected to the main spar 14 through a main spar rear left connecting ring and a main spar rear right connecting ring 62, one end of the left upper expansion bar 22, the right upper expansion bar 16, the left lower expansion bar and the right lower expansion bar 33 is respectively connected to the net mouth side bar 78, the other end of the left upper expansion bar 22 and the left lower expansion bar is connected to the left expansion wing rear fork bar, the other end of the left expansion wing rear fork bar is connected with a left expansion wing rear fork bar shackle, the left expansion wing rear fork bar shackle is connected to the left expansion wing rear fork bar hole on the left expansion wing plate 17, the other end of the right upper expansion bar 16 and the right lower expansion bar 33 is connected to the right expansion wing rear fork bar 59, the other end of the right expansion wing rear fork bar 59 is connected with a right expansion wing rear fork bar shackle 58, the right expansion wing rear fork bar shackle 58 is connected to the right expansion wing rear fork bar hole 57 on the right expansion wing plate 32, the other end of the left lower pull bar 35 and the right lower pull bar 13 is respectively connected to the main spar 14 through the main spar rear left outer shackles 40 and the main spar rear right outer shackles 37.

[0051] The tail of the net bag 10 is connected to the fishing boat 1 through a conveying assembly, the conveying assembly comprises a fish conveying pipe 2 and a fish suction pump 9 connected to the fish conveying pipe 2, one end of the fish conveying pipe 2 is connected to the tail of the net bag 10, the other end of the fish conveying pipe 2 is placed on the fishing boat 1, the above-mentioned fish conveying pipe 2 is a hard rubber pipe with a diameter of 8-10 inches, the fish suction pump is connected to the net bag underwater, and the ship end fish storage cabin is connected above water, so as to convey the catch of the net bag to the ship.

[0052] The inside of the net body 11 is provided with a guide net 21, which is a polyethylene netting with a mesh size of 20 mm and coated with a luminous resin. When a fish with vertical movement characteristics (such as a lanternfish) hits the net, it can be guided into the center of the guide net 21 by the water flow. The center of the guide net 21 is provided with a luminous strip 34, which can be designed as an underwater light strip or a fluorescent strip, and is mainly used to attract and guide phototactic fish into the net. One end of the guide net 21 and the luminous strip 34 is fixed to the narrow end of the net body 11, and the other end is connected to the self-expanding assembly. The entrance end of the net body 11 is provided with a luminous net grid 19, which is a polyester monofilament net coated with a luminous resin. The net has flexibility and a certain rigidity, and remains open under no stress, which is used to screen fish into the net and prevent large-sized fish and mammals such as dolphins, seals, and sharks from entering the net. The mesh size of this embodiment is 150 mm in diameter.

[0053] One end of the left and right telescopic trusses 23 and 31 inserted into the main truss 14 is connected to the inside of the main truss 14 through a tension assembly, and the other end of the left and right telescopic trusses 23 and 31 is respectively connected with a left and right expanding wing plate 17 and 32.

[0054] The left and right expanding wing plates 17 and 32 are both single-seam wing plates, which have a flow guide plate and a main wing plate, and are welded to the segments of the two telescopic trusses. The aspect ratio is 2.5, and the bottom is flush with the bottom end of the main truss. The height of this embodiment is 1.1 meters, the width is 0.44 meters, the chord length l1 of the flow guide plate of the expanding wing plate is 0.25 meters, the angle a is 30 degrees, the camber is 0.12, the chord length l2 of the main wing plate of the expanding wing plate is 0.5 meters, the angle b is 6 degrees, and the camber is 0.12. The angle α between the expanding wing plate 20 and the water flow V is 30 degrees. According to tests, the lift coefficient (expanding force coefficient) of the wing plate under this installation attack angle is 1.919, and the drag coefficient is 0.533, that is, under the operating condition of water flow speed 1 meter / second, the expanding wing plate can generate an expanding force of about 464 N. The expanding wing plate structure of this embodiment is only for functional description, and devices with the same function can be used as expanding devices.

[0055] The end of the guide net 21 is connected with a guide net leading edge 56, which is connected with a main truss rear right inner shackle 38, a main truss rear center shackle 70, and a main truss rear left inner shackle 39. The main truss rear right inner shackle 38, the main truss rear center shackle 70, and the main truss rear left inner shackle 39 are connected with the main truss 14 through a main truss right rear fork connection ring, a main truss center rear fork connection ring 69, and a main truss left rear fork connection ring, respectively.

[0056] The tension assembly comprises a main truss center fixing plate 71 fixed at a middle position inside the main truss 14, left and right constant tension devices 73 and 67 connected to the two side walls of the main truss center fixing plate 71 through constant tension device supports 68 respectively, an end of the left telescopic truss 23 connected to a constant tension spring sheet 72 on the left constant tension device 73 through a connecting rope 66, and an end of the right telescopic truss 31 connected to a right telescopic truss fixing plate 80 connected to the constant tension spring sheet 72 on the right constant tension device 67 through the connecting rope 66.

[0057] An end of the main truss 14 is provided with a main truss limiting plate 61, and an end of the left telescopic truss 23 and the right telescopic truss 31 inside the main truss 14 is provided with a telescopic truss extension stopper 63 corresponding to the main truss limiting plate 61. One side of the telescopic truss extension stopper 63 is provided with a telescopic truss balance sliding block 64, so that the telescopic truss can slide in the main truss 14 and prevent shaking. The other end of the left telescopic truss 23 and the right telescopic truss 31 is provided with a telescopic truss contraction upper stopper 43 and a telescopic truss contraction lower stopper 44. When the telescopic truss is inside the main truss, the telescopic truss contraction upper stopper 43 and the telescopic truss contraction lower stopper 44 prevent the expansion wing from hitting the main truss and limit the position.

[0058] The left and right expansion wing plates 17 and 32 each comprise an expansion wing main plate 55 connected to a telescopic truss curved plate 47 at an end of the left telescopic truss 23 and the right telescopic truss 31, the expansion wing main plate 55 generates expansion force, the expansion wing main plate 55 is connected to an expansion wing guide plate 53, the expansion wing guide plate 53 has the function of guiding water flow and improving expansion, and the expansion wing main plate 55 and the expansion wing guide plate 53 are each connected to an expansion wing muscle plate one 49, an expansion wing muscle plate two 50, an expansion wing muscle plate three 51, an expansion wing muscle plate four 52, and an expansion wing muscle plate five 54, which are reinforcing plates connected to the guide plate and the main plate to increase the overall strength of the wing plate.

[0059] The stern of the fishing boat 1 is provided with a hoisting assembly, which comprises a stern truss 7 and a winch 75 installed on the fishing boat, the stern truss 7 is provided with a fixed pulley 76, and one end of a cable on the winch 75 is connected to a hook 77 after passing through the fixed pulley 76.

[0060] A method for operating a lantern fish fishing net, comprising the following steps:

[0061] A, the net is stored in a net winding machine, and the net is unfolded by a winch at the stern of the boat, and the net bag is pulled to the deck of the stern.

[0062] B, the net capsule is connected to the pumping system (fish pipe), and the stern crane is used to hoist and assist the launching in the sea at the stern of the ship. After the net enters the water, the water flow or the forward movement of the fishing boat causes the net and the fish pipe to gradually release into the sea, and the net reel is gradually released;

[0063] C, when the net mouth reaches the stern, the net reel stops, and the parts of the main spar and the net mouth are connected by the rope;

[0064] D, after the connection is completed, the main spar is hoisted into the water by the stern crane, and the towing rope (net reel) is continuously released, and the fish pipe is synchronously released. When the fishing boat reaches the fish group water layer, the operation stops and the release starts.

[0065] E, when the net is collected, the towing rope is reeled in by the net reel until the main spar is reeled in to the water surface;

[0066] F, when the connection point reaches the stern of the ship, the two sides of the stern of the ship are connected to the left and right two traveling ropes by the twisting rope machine, and the main spar is collected and pulled to the stern of the ship by the traveling rope;

[0067] G, after the spar is fixed, the twisting rope machine is disconnected from the traveling rope, and the two traveling ropes connected to the net mouth at the rear of the spar are connected to the two twisting rope machines, and the net mouth is continuously reeled in until the net mouth is collected and pulled to the stern of the ship, and the net mouth is fixed to the deck of the ship;

[0068] H, the towing rope of the net reel is connected to the pulling rope at the front end of the net mouth, the net reel is operated, the net is reeled in, and the fish pipe is reeled in, until the net is completely collected on the ship.

[0069] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A lanternfish fishing net, characterized by: The utility model provides a fishing boat (1), fishing gear (3) and set between the fishing boat (1) and fishing gear (3) self -expanding assembly, self -expanding assembly is connected with the drive assembly on the fishing boat (1) through connecting assembly one, the fishing boat (1) is connected with anchor rope (5), the other end of anchor rope (5) is connected with ship anchor (6);Fishing gear (3) includes the net body (11) of funnel shape and the net bag (10) connected on the net body (11) neck end, the net mouth one end of net body (11) is connected with the laterally arranged floater (8) and sinker (12) and two vertical net mouth side (78), two the two ends of net mouth side (78) are respectively come in the two ends of floater (8) and sinker (12), the net mouth one end of net body (11) is connected with self -expanding assembly through connecting assembly two, the tail of net bag (10) is connected with the fishing boat (1) through conveying assembly, conveying assembly includes fish conveying pipe (2) and the fish sucking pump (9) connected on fish conveying pipe (2), one end of fish conveying pipe (2) is connected on the tail of net bag (10), the other end of fish conveying pipe (2) is placed on the fishing boat (1), the inside of net body (11) is equipped with guide net (21), the center of guide net (21) is provided with luminous band (34), one end of guide net (21) and luminous band (34) is fixed on the neck end of net body (11), the other end is connected on self -expanding assembly, the import one end of net body (11) is equipped with luminous net grid (19).

2. The angling net according to claim 1, characterized in that: The self -expanding assembly includes hollow main truss rod (14) and left telescopic truss (23) and right telescopic truss (31) inserted into the inside of the two ends of main truss rod (14) respectively, left telescopic truss (23) and right telescopic truss (31) are installed with a plurality of symmetrical left telescopic truss expansion wings (79) and right telescopic truss expansion wings (45) respectively, one end of left telescopic truss (23) and right telescopic truss (31) inserted into main truss rod (14) is connected in the inside of main truss rod (14) through tension assembly, the other end of left telescopic truss (23) and right telescopic truss (31) is connected with left expansion wing plate (17) and right expansion wing plate (32) respectively, the end of guide net (21) is connected with guide net leading edge (56), guide net leading edge (56) is connected with main truss rod rear right inner shackles (38), main truss rod rear center shackles (70) and main truss rod rear left inner shackles (39), main truss rod rear right inner shackles (38), main truss rod rear center shackles (70) and main truss rod rear left inner shackles (39) are connected with main truss rod (14) through main truss rod right rear fork connection ring, main truss rod center rear fork connection ring (69) and main truss rod left rear fork connection ring respectively.

3. The lampfish fishing net according to claim 2, characterized in that: The tension assembly comprises a main truss center fixing plate (71) fixed at a middle position inside the main truss (14), left and right constant tension devices (73, 67) are connected to the two side walls of the main truss center fixing plate (71) through constant tension device supports (68) respectively, the end of the left telescopic truss (23) is connected with a constant tension spring piece (72) on the left constant tension device (73) through a connecting rope (66), the end of the right telescopic truss (31) is connected with a right telescopic truss fixing plate (80), and the right telescopic truss fixing plate (80) is connected with the constant tension spring piece (72) on the right constant tension device (67) through the connecting rope (66).

4. The lampfish fishing net according to claim 3, characterized in that: The end of the main truss (14) is provided with a main truss limiting plate (61), the end of the left telescopic truss (23) and the right telescopic truss (31) placed in the main truss (14) is provided with a telescopic truss extension stopper (63) corresponding to the main truss limiting plate (61), one side of the telescopic truss extension stopper (63) is provided with a telescopic truss balance sliding block (64), and the other end of the left telescopic truss (23) and the right telescopic truss (31) is provided with a telescopic truss contraction upper stopper (43) and a telescopic truss contraction lower stopper (44).

5. The lampfish fishing net according to claim 4, characterized in that: The left and right expansion wing plates (17, 32) each comprise an expansion wing main wing plate (55) connected to a telescopic truss curved plate (47) at the end of the left telescopic truss (23) and the right telescopic truss (31), the expansion wing main wing plate (55) is connected with an expansion wing guide plate (53), and the expansion wing main wing plate (55) and the expansion wing guide plate (53) are each connected with an expansion wing muscle plate one (49), an expansion wing muscle plate two (50), an expansion wing muscle plate three (51), an expansion wing muscle plate four (52) and an expansion wing muscle plate five (54).

6. The lampfish fishing net according to claim 5, characterized in that: The connecting assembly comprises a left expanding wing fork (24), a left traveling fork (25), a left spar fork (26), a center fork (27), a right spar fork (28), a right traveling fork (29) and a right expanding wing fork (30), one end of the left expanding wing fork (24), the left traveling fork (25), the left spar fork (26), the center fork (27), the right spar fork (28), the right traveling fork (29) and the right expanding wing fork (30) are connected to the connecting point (18), the connecting point (18) is connected to the driving assembly through the traveling line (4), the other end of the left expanding wing fork (24) and the right expanding wing fork (30) is connected with an expanding wing front fork (46), the two expanding wing front forks (46) are connected to the expanding wing front fork holes (48) on the left expanding wing plate (17) and the right expanding wing plate (32) respectively, the other end of the left traveling fork (25) and the left spar fork (26) is connected to the main spar (14) through a main spar front left shackle (41), the other end of the center fork (27) is connected with a main spar front middle shackle (42), the main spar front middle shackle (42) is connected to the main spar (14) through a main spar center front fork connecting ring (65), the right spar fork (28) and the right traveling fork (29) are connected to a main spar front right shackle (36), the main spar front right shackle (36) is connected to the main spar (14) through a main spar front right connecting ring (60).

7. The angling net according to claim 6, characterized in that: The driving assembly comprises a net twister (74) installed on the fishing boat (1), and the end of the traveling line (4) is connected to the net twister (74).

8. The angling net according to claim 1, characterized in that: The connecting assembly two includes left upper pull beam (20), right upper pull beam (15), left upper expansion beam (22), right upper expansion beam (16), left lower pull beam (35), right lower pull beam (13), left lower expansion beam and right lower expansion beam (33), the end of the left upper pull beam (20) and the right upper pull beam (15) is connected on the two ends of the float beam (8) respectively, the other end of the left upper pull beam (20) and the right upper pull beam (15) is connected with the main truss rod rear left outer shackle (40) and the main truss rod rear right outer shackle (37) respectively, the main truss rod rear left outer shackle (40) and the main truss rod rear right outer shackle (37) are connected on the main truss rod (14) through the main truss rod rear left connecting ring and the main truss rod rear right connecting ring (62) respectively, the left upper expansion beam (22), the right upper expansion beam (16), the left lower expansion beam and the right lower expansion beam (33) are connected on the net opening side beam (78) respectively, the other end of the left upper expansion beam (22) and the left lower expansion beam is connected on the left expansion wing rear fork beam, the other end of the left expansion wing rear fork beam is connected with the left expansion wing rear fork beam shackle, the left expansion wing rear fork beam shackle is connected on the left expansion wing rear fork beam hole on the left expansion wing plate (17), the other end of the right upper expansion beam (16) and the right lower expansion beam (33) is connected on the right expansion wing rear fork beam (59), the other end of the right expansion wing rear fork beam (59) is connected with the right expansion wing rear fork beam shackle (58), the right expansion wing rear fork beam shackle (58) is connected on the right expansion wing rear fork beam hole (57) on the right expansion wing plate (32), the other end of the left lower pull beam (35) and the right lower pull beam (13) is connected on the main truss rod (14) through the main truss rod rear left outer shackle (40) and the main truss rod rear right outer shackle (37) respectively.

9. The angling net according to claim 1, characterized in that: The stern of the fishing boat (1) is provided with a lifting assembly, the lifting assembly includes a stern lifting truss (7) and a winch (75) installed on the fishing boat, a fixed pulley (76) is installed on the stern lifting truss (7), and a wire rope on the winch (75) is connected with a lifting hook (77) after passing through the fixed pulley (76).

10. A method of operating a lampfish fishing net according to any one of claims 1-9, characterized in that, The method comprises the following steps: A, the net is stored in the net reel, and the net is unfolded through the winch at the stern of the ship, and the net bag is pulled to the stern deck; B, the net bag is connected with the pump suction system (fish conveying pipe), and is lifted by the stern lifting truss and is put into the sea at the stern of the ship, after the net enters the water, the water flow or the forward movement of the fishing boat makes the net and the fish conveying pipe gradually release into the sea, and the net reel is gradually released; C, when the net opening reaches the stern, the net reel stops, and the wire ropes connected with the main truss rod and the net opening are connected; D, after the connection is completed, the main truss rod is lifted into the water by the stern lifting truss, the trailing wire (winch) is continuously released, the fish conveying pipe is synchronously released, and the operation is started after reaching the fish group water layer; E, when the net is collected, the trailing wire is wound by the winch until the main truss rod is wound to the water surface; F, after the connection point reaches the stern, the winches on both sides of the stern are connected with two left and right traveling wires respectively, the traveling wires are wound to collect the main truss rod to the stern. G, after fixing the beam, remove the winch and the cable, connect the two cables on both sides of the rear of the beam to the two winches, continue to collect the net mouth, until the net mouth is collected to the stern of the ship, fix the net mouth to the deck of the ship; H, connect the cable of the net winding machine to the front end of the cable of the net mouth, operate the net winding machine, collect the net and wind the fish conveying pipe, until the net is completely collected on the ship.

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