CN108013000B

CN108013000B - Semi-automatic marine fishing equipment

Info

Publication number: CN108013000B
Application number: CN201711348355.XA
Authority: CN
Inventors: 张洪刚; 刘嫚
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2017-12-15
Filing date: 2017-12-15
Publication date: 2020-08-25
Anticipated expiration: 2037-12-15
Also published as: CN108013000A

Abstract

The invention discloses semi-automatic marine fishing equipment, which belongs to the technical field of fishing equipment and comprises a ship body and a fishing device, wherein a water inlet pipe is arranged at the upper end of the middle part of the ship body, a water storage tank is arranged below the water inlet pipe and is provided with two branch ports, the water storage tank is connected with a flushing nozzle through a water pipe, a shovel plate is arranged at the bottom of the ship body, a stirring arm is arranged on the left side of the shovel plate and is connected to the bottom of the ship body through a rotating shaft, and a bait casting device is arranged at the end part. The device can catch fish and shellfish, the shell of the shellfish cannot be injured when the shellfish is caught, the catching efficiency is high, bait can be thrown through the device to attract fish shoals, the fishing net is not easy to deform in the fishing process in water, large-scale catching can be realized, time and labor are saved, and the operation is convenient.

Description

Semi-automatic marine fishing equipment

Technical Field

The invention belongs to the technical field of fishing equipment, and particularly relates to semi-automatic marine fishing equipment.

Background

At present, a plurality of culture areas and culture bases for culturing shellfish products exist, the culture areas of the culture areas and the culture bases are often very large, however, the shellfish fishing device is dragged by a fishing boat, the shellfish is collected in a net bag of the fishing device, and then the shellfish in the net bag of the fishing device is discharged and put into water again. Not only waste time and energy like this, catch unclean moreover, cause easily to omit, moreover drag the in-process and bump the shellfish bad easily, cause economic loss, simultaneously, traditional fish catch the mode, mostly adopt to spill the net formula, this mode need rely on higher experience in operation process, and because the physical power reason can't continuously catch, can't detect submarine condition when catching, also can't effectual attraction shoal of fish, lead to catching the effect not good, the harvest yield is on the small side.

Disclosure of Invention

The invention aims to provide semi-automatic marine fishing equipment, which can be used for fishing fishes and shellfishes, does not damage shells of the shellfishes when the shellfishes are fished, has high fishing efficiency, can attract fish groups by throwing baits, is not easy to deform during fishing of fishing nets in water, can realize large-scale fishing, saves time and labor and is convenient to operate.

The technical scheme adopted by the invention for realizing the purpose is as follows: semi-automatic marine fishing equipment, including hull, bracing piece, fishing device, the hull left side is equipped with the bracing piece, and the bracing piece tip is equipped with the leading wheel, and the bracing piece left side is equipped with cable wire winding and unwinding device, and the cable wire winding and unwinding device goes up rich has first cable wire, and first cable wire passes through the leading wheel and links to each other with the uide bushing on the bracing piece, and the uide bushing below is equipped with fishing device. The inside washing terminals that is equipped with of hull, the hull bottom is equipped with shovel board and puddler. The device can realize the integration of shellfish and fish catching, when in use, the height of the catching device can be adjusted by the supporting frame, the length of the first steel cable can be effectively controlled by rotating the steel cable retracting device, and the steel cable can be more smoothly carried out in the sliding process by the guide wheel.

Preferably, the upper end of the middle part of the ship body is provided with a water inlet pipe, a water storage tank is arranged below the water inlet pipe, the water storage tank is provided with two branch openings, the water storage tank is connected with a washing nozzle through a water pipe, the bottom of the ship body is provided with a shovel plate, the left side of the shovel plate is provided with a stirring arm, the stirring arm is connected to the bottom of the ship body through a rotating shaft, and the end part of the right side. When the shellfish is caught, the shellfish can be caught by dragging the shellfish by using a ship, the stirring arm is used for stirring mud on the spreading surface in the advancing process of the ship body, so that the mouth of the shellfish is closed in advance, the phenomenon that the caught shellfish contains excessive silt is reduced, the shellfish is completely shoveled on the ship body by the shoveling plate, the catching efficiency is improved, and the washing nozzle can preliminarily clean the shellfish on the shoveling plate.

Preferably, a support is arranged below the support rod, and the support rod forms an included angle of 30-35 degrees with the upper surface of the ship body in a working state. The supporting rod is matched with the support to improve the firmness of the whole device, the ship body is more stable on the water surface, the supporting rod and the ship body are in the set angle range, the fishing effect is good, and the fishing range is maximized.

Preferably, the fishing device comprises a hollow pipe, a guide groove is connected to the upper end of the hollow pipe, a fixing plate is connected to the lower end of the hollow pipe, a controller is arranged on one side of the fixing plate, a fishing net retracting device is arranged at the upper end of the right side of the fixing plate, the fishing net retracting device is connected with one end of a second steel cable, the other end of the second steel cable is connected with a net retracting fixing block through the hollow pipe, a motor is arranged at the lower end of the right side of the fixing plate, a driving gear is fixedly connected to the output end of the motor and meshed with a driven gear arranged below the fixing plate, a bearing is arranged in the middle of the driven gear, a rotating disc is. The fishing device is delivered to the sea surface through the steel cable retracting device, the controller controls the motor to rotate, so that corresponding gears are driven, the turnplate below the gears also rotates simultaneously, in the rotating process, the fishing net can be scattered, the annular lasso is opened, the scattered fishing net can be thrown to the sea surface along with self gravity, free falling can be used for fishing, compared with manual net scattering fishing, the design can realize full-automatic net scattering, the net scattering area is large, the net scattering position is accurate, the labor intensity can be effectively reduced, meanwhile, the fishing quality is greatly guaranteed, magnets attached to the fishing net are rhombic, a plurality of through holes are formed in the surfaces of the magnets, when the fishing net is submerged, the fishing net is pulled into the bottom by the gravity of the magnets, the fishing net can float back and forth at the bottom, and at the moment, the magnets are subjected to resistance relative to an object in fluid motion. This resistance is opposite to its direction of movement. In laminar flow, the resistance is in certain ratio to the speed, and the ratio is small, so that the impact force of the water flow on the magnet is small, and the fishing net can be prevented from being extruded by the water flow to deform during fishing.

The impact force of the water flow on the diamond-shaped magnet can be calculated according to a formula,

in the formula

Is acting water flow, and can be approximately obtained when the running flow rate is small

=t。

The flux coefficient and c is the pore diameter of the magnet surface. The impact force of the water flow on the magnet is calculated by the formula, so that the probability of deformation of the fishing net is low.

As preferred, the washing nozzle comprises a connecting block, the upper part of the connecting block is connected with a water pipe, the connecting block is connected with a pipe clamp through a bolt, a water storage ring is arranged in the pipe clamp and connected with a nozzle, and an adjusting nut is arranged in the middle of the nozzle. The water storage ring on the upper part of the nozzle can rotate in the pipe clamp at a certain angle, the spraying area can be increased, the size of water sprayed by the nozzle can be adjusted by rotating the nut, when the shellfish just shovels the hull, more sludge is arranged on the outer side of the shell, and the sludge outside the shell can be washed clean by the washing nozzle with higher water pressure. Meanwhile, the washing nozzle can flush the silt on the spreading surface to make the silt softer so that the shovel plate can shovel the silt, and the fishing efficiency is improved.

As preferred, the shovel board passes through the extension spring and links to each other with the hull bottom, and shovel board surface equipartition has the round hole, and the shovel board tip is equipped with the more blunt screening tooth of tooth mouth, and the shovel board middle part is equipped with collects the box. The extension spring on the shovel board can control the angle of shovel board, makes it can not bend, is equipped with the round hole on the shovel board in order to let silt pass through the round hole as far as at the in-process of shovel shellfish and excludes, and the tooth mouth of screening tooth is more blunt in order not to hinder the shellfish, avoids directly stabbing the casing of shellfish.

Preferably, the bait casting device comprises a collecting box, a discharging pipe is arranged below the collecting box, a blocking plate is arranged between the discharging pipe and the collecting box, a rod shaft is arranged on the left side of the discharging pipe and penetrates through the discharging pipe, a spring is sleeved on the rod shaft, a baffle is fixedly connected to the end portion of the rod shaft, and a discharging hole is formed in the right side of the discharging pipe. The case that gathers materials is put into bait in the discharging pipe, and the pole pulls backward axially, and compression spring loosens it after compressing to the removal degree, and bait will be shed toward the sea, and this design is for more effectual attraction to the shoal of fish, improves and catches efficiency.

Compared with the prior art, the invention has the beneficial effects that: the fishing device can be matched with the bait casting device more effectively to catch fish schools, the fishing device can automatically spread nets, the area of the net is large, the shoveling plate at the lower end of the ship body can improve the catching efficiency of shellfish, the damage to shellfish shells can be reduced, and sludge generated by shellfish catching can be preliminarily cleaned by the washing nozzle. The device can catch fishes and shellfishes, can realize large-scale catching, reduce the labor intensity and effectively ensure the catching quality.

Drawings

FIG. 1 is a front view of a semi-automatic marine fishing apparatus of the present invention;

FIG. 2 is a schematic view of the structure of the fishing device of the present invention;

FIG. 3 is a partial schematic view of a blade of the present invention;

FIG. 4 is a front view of a blade of the present invention;

FIG. 5 is a schematic structural view of a rinse head according to the present invention;

fig. 6 is a front view of the feeding device of the present invention.

Description of reference numerals: 1. a hull; 2. a rotating shaft; 3. a stirring arm; 4. washing the spray head; 41. connecting blocks; 42. a water storage ring; 43. a pipe clamp; 44. a nozzle; 45. adjusting the nut; 5. a shovel plate; 51. a circular hole; 52 a tension spring; 53. a collection box; 6. a water storage tank; 7. a water inlet pipe; 8. a baffle plate; 9. a lever shaft; 10. a spring; 11. a barrier plate; 12. a discharge port; 13. a material collecting box; 14. a support; 15. a support bar; 16. a first wire rope; 17. a guide wheel; 18. a guide groove; 19. a fishing device; 1901. a second wire rope; 1902. a fishing net reeling and unreeling device; 1903. a controller; 1904. a motor; 1905. a driving gear; 1906. a net retracting fixing block; 1907. a magnet; 1908. a hollow tube; 1909. a fixing plate; 1910. a bearing; 1911. a driven gear; 1912. a turntable; 1913. an annular lasso; 20. a fishing net; 21. a steel cable winding and unwinding device; 22. and (4) discharging the pipe.

Detailed Description

The invention is described in further detail below with reference to examples and figures:

example 1:

as shown in fig. 1, the semi-automatic marine fishing device comprises a hull 1 and a fishing device 19, wherein a support rod 15 is arranged on the left side of the hull 1, a guide wheel 17 is arranged at the end part of the support rod 15, a steel cable winding and unwinding device 21 is arranged on the left side of the support rod 15, a first steel cable 16 is wound on the steel cable winding and unwinding device 21, the first steel cable 16 is connected with a guide sleeve 18 on the support rod 15 through the guide wheel 17, the fishing device 19 is arranged below the guide sleeve 18, a washing nozzle 4 is arranged inside the hull 1, and a shovel plate 5 and a stirring arm 3 are arranged at the bottom of. The device can realize the integration of shellfish and fish catching, when in use, the height of the catching device 19 can be adjusted by the supporting frame 15, the length of the first steel cable 16 can be effectively controlled by rotating the steel cable retracting device 21, and the steel cable can be more smoothly moved in the sliding process by the guide wheel 17.

The water storage tank 6 is provided with two branch openings, the water storage tank 6 is connected with the washing nozzle 4 through a water pipe, the shovel plate 5 is arranged at the bottom of the ship body 1, the stirring arm 3 is arranged on the left side of the shovel plate 5, the stirring arm 3 is connected to the bottom of the ship body 1 through the rotating shaft 2, and the bait feeding device is installed at the end part of the right side of the ship body 1. When the shellfish is caught, the shellfish can be caught by dragging the shellfish by using a ship, the stirring arms 3 stir mud on a spreading surface in the advancing process of the ship body 1, so that the mouth of the shellfish is closed in advance, excessive mud contained in the caught shellfish is reduced, the shellfish is completely shoveled on the ship body 1 by the shoveling plates 5, the catching efficiency is improved, and the shellfish on the shoveling plates can be preliminarily cleaned by the washing nozzles 4.

Example 2:

as shown in fig. 1-6, the semi-automatic marine fishing device comprises a hull 1 and a fishing device 19, wherein a support rod 15 is arranged on the left side of the hull 1, a guide wheel 17 is arranged at the end part of the support rod 15, a steel cable winding and unwinding device 21 is arranged on the left side of the support rod 15, a first steel cable 16 is wound on the steel cable winding and unwinding device 21, the first steel cable 16 is connected with a guide sleeve 18 on the support rod 15 through the guide wheel 17, and the fishing device 19 is arranged below the guide sleeve 18. The device can realize the integration of shellfish and fish catching, when in use, the height of the catching device 19 can be adjusted by the supporting frame 15, the length of the first steel cable 16 can be effectively controlled by rotating the steel cable retracting device 21, and the steel cable can be more smoothly moved in the sliding process by the guide wheel 17.

A support 14 is arranged below the support rod 15, and the support rod 15 forms an included angle of 30-35 degrees with the upper surface of the ship body 1 in a working state. The supporting rod 15 and the support 14 are matched with each other to improve the firmness of the whole device, the ship body 1 is more stable on the water surface, the supporting rod 15 and the ship body 1 are in a set angle range, the fishing effect is good, and the fishing range is maximized.

The fishing device 19 comprises a hollow pipe 1908, the upper end of the hollow pipe 1908 is connected with a guide groove 18, the lower end of the hollow pipe 1908 is connected with a fixing plate 1909, one side of the fixing plate 1909 is provided with a controller 1903, the upper end of the right side of the fixing plate 1909 is provided with a fishing net retracting device 1902, the fishing net retracting device 1902 is connected with one end of a second steel cable 1901, the other end of the second steel cable 1901 is connected with a net retracting fixing block 1906 through the hollow pipe 1908, the lower end of the right side of the fixing plate 1909 is provided with a motor 1904, the output end of the motor 1904 is fixedly connected with a driving gear 1905, the driving gear 1905 is meshed with a driven gear 1911 arranged below the fixing plate 1909, the middle of the driven gear 1911 is provided with a bearing 1910, a turntable 1912 is arranged below the driven gear 1911. The fishing device 19 is sent to the sea surface through the steel cable retracting device 21, the controller 1903 controls the motor 1904 to rotate, so that corresponding gears are driven, the turnplate 1912 below the gears also rotates simultaneously, in the rotating process, the fishing net 20 can be spread, the annular lasso 1913 is opened, the spread fishing net 20 can be thrown to the sea surface along with self gravity, free falling is carried out for fishing, compared with manual net spreading fishing, the design can realize full-automatic net spreading, the net spreading area is large, the net spreading position is accurate, the labor intensity can be effectively reduced, meanwhile, the fishing quality is greatly guaranteed, magnets attached to the fishing net are rhombic, a plurality of through holes are formed in the surfaces of the magnets, the magnets can pull the fishing net into the water by utilizing the gravity of the underwater magnets when the fishing net is submerged, the fishing net can float back and forth at the water bottom, and at the moment, the magnets are subjected to resistance relative to an object in fluid motion. This resistance is opposite to its direction of movement. In laminar flow, the resistance is in certain ratio to the speed, and the ratio is small, so that the impact force of the water flow on the magnet is small, and the fishing net can be prevented from being extruded by the water flow to deform during fishing.

in the formula

=t。

The connecting part of the fishing net 20 and the magnet 1907 is coated with an antifouling coating, and the preparation method of the coating comprises the following steps: adding 20g of polystyrene-polybutadiene-polystyrene into 200mL of tetrahydrofuran, stirring for 30min, adding 4.32g of vinyl fluorosilicone oil and 0.4g of azobisisobutyronitrile, stirring for 5h at 65 ℃, then stirring for 20h at room temperature, settling reactants by using ethanol, and vacuum-drying the obtained filter residue at 50 ℃; taking 20g of dried filter residue, adding 300mL of dichloromethane and 60g of trichloroperoxybenzoic acid, reacting for 3.5h at room temperature, then adding 0.2g of benzoin ethyl ether and 0.5g of 3-methyl diphenyl ether, reacting for 2h, then adding 60g of polyethylene glycol and 6mL of boron trifluoride, reacting for 20h, adding 600mL of ethanol, fully stirring, filtering to remove reaction monomers, precipitating the filtrate twice in an ice water mixture to obtain a reaction product, and vacuum-drying the product at 50 ℃; and taking 10g of the product, adding 70mL of tetrahydrofuran, stirring for dissolving, and coating the dissolved solution on the surface of the fishing net to obtain the antifouling coating. The antifouling coating has low surface energy, mucus secreted by marine fouling organisms is not easy to spread and wet on the surface, so that the fouling organisms are difficult to hold the surface of the filter screen and cannot form effective adhesion, and the antifouling effect of the filter screen is greatly improved; the benzoin ethyl ether, the 3-methyl diphenyl ether and the boron trifluoride have a synergistic effect, so that the migration of polyethylene glycol to the surface of the coating is promoted, a molecular chain brush which is arranged in order is formed on the surface of the coating, the molecular chain brush has good flexibility, fouling organisms are difficult to attach firmly, and the molecular chain brush can be separated from the surface of the coating under the action of water flow, so that the coating has a self-cleaning effect.

The washing nozzle 4 comprises a connecting block 41, the upper part of the connecting block 41 is connected with a water pipe, the connecting block 41 is connected with a pipe clamp 43 through a bolt, a water storage ring 42 is arranged inside the pipe clamp 43, the water storage ring 42 is connected with a nozzle 44, and the middle part of the nozzle 44 is provided with an adjusting nut 45. The water storage ring 42 at the upper part of the nozzle 44 can rotate in the pipe clamp at a certain angle to increase the spraying area, the water spraying size of the nozzle 44 can be adjusted by rotating the nut 45, when the shellfish just shovels the hull 1, more sludge exists outside the shell, and the sludge outside the shell can be washed clean by the washing nozzle 4 with higher water pressure. Meanwhile, the washing nozzle 4 can flush the sediment on the spreading surface to make the sediment softer so that the shovel plate 5 can shovel the sediment, and the fishing efficiency is improved.

Shovel 5 links to each other through extension spring 52 and hull 1 bottom, and shovel 5 surperficial equipartition has

round hole

51, and 5 tip of shovel are equipped with the more blunt screening tooth 54 of tooth mouth, and shovel 5 middle part is equipped with collects box 53. The angle of the shovel plate can be controlled by the tension spring 52 on the shovel plate 5, so that the shovel plate is not bent, the round hole 51 is formed in the shovel plate 5, so that sludge can be discharged outside through the round hole 52 as far as possible in the process of shoveling shellfish, and the relatively blunt tooth openings of the screening teeth 54 are used for preventing shellfish from being injured, so that the shellfish shell is prevented from being directly punctured.

The bait casting device comprises a collecting box 13, a discharge pipe 22 is arranged below the collecting box 13, a separation plate 11 is arranged between the discharge pipe 22 and the collecting box 13, a rod shaft 9 is arranged on the left side of the discharge pipe 22, the rod shaft 9 penetrates through the discharge pipe 22, a spring 10 is sleeved on the rod shaft 9, a baffle plate 8 is fixedly connected to the end portion of the rod shaft 9, and a discharge hole 12 is arranged on the right side of the discharge pipe 22. The feed collecting box 13 is used for placing the bait into the feed discharging pipe 22, the rod shaft 9 is pulled backwards, the spring 10 is compressed to a moving degree and then is loosened, the bait is thrown to the sea surface, and the design aims to attract the fish shoal more effectively and improve the fishing efficiency.

Example 3:

as shown in fig. 1-6, the semi-automatic marine fishing device has the working principle that when the shellfish is fished, the shellfish can be fished by using the dragging of a ship, the stirring arm 3 stirs mud on a spreading surface in the advancing process of the ship body 1, so that the mouth of the shellfish is closed in advance, the shellfish on the fishing is reduced to contain excessive mud, the shellfish is completely shoveled on the ship body 1 by the shovel plate 5, when the shellfish just shovels the ship body 1, more mud exists outside the shell, and the mud outside the shell can be washed clean by the washing nozzle 4 with higher water pressure. Meanwhile, the washing nozzle 4 can flush the sediment on the spreading surface to make the sediment softer so that the shovel plate 5 can shovel the sediment, and the fishing efficiency is improved. When fishing fishes, bait is thrown into the sea through the bait throwing device, the position of the fishing device 19 is controlled through the steel cable retracting device 21 on the support rod 15, the controller 1903 controls the motor 1904 to rotate, so that the corresponding gear is driven, the turntable 1912 below the gear also rotates simultaneously, in the rotating process, the fishing net 20 can be spread, the annular lasso 1913 is opened, the spread fishing net 20 can be thrown to the sea surface along with the self gravity, the free falling is performed for fishing, compared with manual net spreading fishing, the design can realize full-automatic net spreading, the net spreading area is large, the net spreading position is accurate, the fishing quality can be effectively reduced, the fishing quality is greatly guaranteed, and after the net spreading is finished, the net retracting device winds and retracts the net steel cable to pull the fishing net 20 out of the water surface 1902.

The conventional operations in the above embodiments 1, 2 and 3 are well known to those skilled in the art and will not be described herein.

The embodiments described above are intended to illustrate the technical solutions of the present invention in detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modification, supplement or similar substitution made within the scope of the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Semi-automatic marine equipment of catching, including hull (1), bracing piece (15), catch device (19), its characterized in that: a support rod (15) is arranged on the left side of the ship body (1), a guide wheel (17) is arranged at the end part of the support rod (15), a steel cable winding and unwinding device (21) is arranged on the left side of the support rod (15), a first steel cable (16) is wound on the steel cable winding and unwinding device (21), the first steel cable (16) is connected with a guide sleeve (18) on the support rod (15) through the guide wheel (17), a catching device (19) is arranged below the guide sleeve (18), a washing spray nozzle (4) is arranged inside the ship body (1), and a shovel plate (5) and a stirring arm (3) are arranged at the bottom of the ship body (1); the fishing device (19) comprises a hollow pipe (1908), the upper end of the hollow pipe (1908) is connected with a guide sleeve (18), the lower end of the hollow pipe (1908) is connected with a fixing plate (1909), one side of the fixing plate (1909) is provided with a controller (1903), the upper end of the right side of the fixing plate (1909) is provided with a fishing net retracting device (1902), the fishing net retracting device (1902) is connected with one end of a second steel cable (1901), the other end of the second steel cable (1901) is connected with a net retracting fixing block (1906) through the hollow pipe (1908), the lower end of the right side of the fixing plate (1909) is provided with a motor (1904), the output end of the motor (1904) is fixedly connected with a driving gear (1905), the driving gear (1905) is meshed with a driven gear (1911) arranged below the fixing plate (1909), the middle of the driven gear (1911) is provided with a, two ends of the turntable (1912) are provided with annular lassos (1913), the annular lassos (1913) are sleeved on the fishing net (20), the surface of the fishing net (20) is attached with a plurality of magnets (1907), the magnets (1907) are rhombic, and the surface of the magnets (1907) is provided with a plurality of through holes;

the water-saving boat is characterized in that a water inlet pipe (7) is arranged at the upper end of the middle of the boat body (1), a water storage tank (6) is arranged below the water inlet pipe (7), the water storage tank (6) is provided with two branch ports, the water storage tank (6) is connected with a washing nozzle (4) through a water pipe, a shovel plate (5) is arranged at the bottom of the boat body (1), a stirring arm (3) is arranged on the left side of the shovel plate (5), the stirring arm (3) is connected to the bottom of the boat body (1) through a rotating shaft (2), and a bait casting device is arranged at the end;

a support (14) is arranged below the support rod (15), and the support rod (15) forms an included angle of 30-35 degrees with the upper surface of the ship body (1) in a working state;

washing terminals (4) include connecting block (41), connecting block (41) top meets with the water pipe, connecting block (41) pass through bolted connection pipe clamp (43), inside retaining ring (42) that is equipped with of pipe clamp (43), retaining ring (42) are connected with nozzle (44), and nozzle (44) middle part is equipped with adjusting nut (45).

2. The semi-automatic marine fishing apparatus of claim 1, wherein: shovel board (5) link to each other bottom hull (1) through extension spring (52), shovel board (5) surface equipartition has round hole (51), shovel board (5) tip is equipped with more blunt screening tooth (54) of tooth mouth, shovel board (5) middle part is equipped with collects box (53).

3. The semi-automatic marine fishing apparatus of claim 1, wherein: the bait casting device comprises a material collecting box (13), a material discharging pipe (22) is arranged below the material collecting box (13), a blocking plate (11) is arranged between the material discharging pipe (22) and the material collecting box (13), a rod shaft (9) is arranged on the left side of the material discharging pipe (22), the rod shaft (9) penetrates through the material discharging pipe (22), a spring (10) is sleeved on the rod shaft (9), a baffle (8) is fixedly connected to the end portion of the rod shaft (9), and a material discharging hole (12) is formed in the right side of the material discharging pipe (22).