Underwater fishing net gripper

By designing underwater fishing net handles for unmanned ships and multiple institutions, the segmented cutting and automatic collection of fishing nets is realized, solving the time-consuming and labor-intensive problems of fishing nets fishing underwater organisms and artificial collection in the existing technology, and improving the Fishing net salvage efficiency and reduce the impact on marine ecology.

CN119142481APending Publication Date: 2024-12-17CHINESE PEOPLES LIBERATION ARMY NAVAL SPECIALTY MEDICAL CENT
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Patent Information

Application Number
CN202411404321.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-10
Publication Date
2024-12-17

AI Technical Summary

Technical Problem

The existing underwater salvage fishing net device may catch the bottom of the water when dragging the entire fishing net, affecting the underwater food chain and biodiversity. The fishing net needs to be collected manually after being fished, which is time-consuming and labor-intensive, and affecting the salvage efficiency.

Method used

A underwater fishing net gripper including unmanned ships, impellers, collection mechanisms, cutting mechanisms and movement mechanisms was designed to cut the fishing nets in segments through the cutting mechanism to avoid fishing for bottom-water organisms, and to realize automatic fishing nets through the collection mechanism. Collect and save manpower.

Benefits of technology

The segmented cutting of fishing nets is achieved to avoid fishing for underwater organisms, and save manpower through automatic collection, improve the fishing net salvage efficiency and reduce the impact on the underwater ecology.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of underwater fishing net fishing, in particular to an underwater fishing net gripper. According to the underwater fishing net gripper, a fishing net can be cut in a segmented mode, the fishing net is prevented from catching underwater organisms, meanwhile, the fishing net can be automatically collected, and manpower is saved. An underwater fishing net gripper comprises an unmanned ship, an impeller, a collecting mechanism, a cutting mechanism and the like, the impeller is rotatably connected to the left side of the lower portion of the unmanned ship, the collecting mechanism capable of fishing and collecting a fishing net is arranged on the unmanned ship, and the cutting mechanism capable of cutting the fishing net is arranged on the collecting mechanism. After a connecting column makes contact with a guide column again, the guide column and a hollow column are pushed to move upwards, a threaded column rotates to reset, then a second gear rotates to reset, cutters are close to each other to be closed to cut the fishing net, and the effects that the fishing net can be cut in a segmented mode, and the fishing net is prevented from catching underwater organisms are achieved.
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Description

Technical Field

[0001] The invention relates to the technical field of underwater fishing net salvaging, and in particular to an underwater fishing net salvaging gripper. Background Art

[0002] Abandoned fishing nets, also known as “ghost nets,” pose a serious threat to marine ecosystems, not only continuing to catch fish and other marine life, but also causing damage to coral reefs and other seafloor habitats.

[0003] The existing underwater fishing net salvage device is to sink a gripper underwater, grab the fishing net with the gripper, and then lift up the fishing net. However, when the gripper drags the entire fishing net, the fishing net may catch underwater creatures, thus affecting the underwater food chain and biodiversity. After the fishing net is lifted up, the staff needs to remove the fishing net for collection, which is time-consuming and labor-intensive, affecting the efficiency of fishing net salvage.

[0004] Therefore, an underwater fishing net grabber has been developed that can cut fishing nets into sections to prevent them from catching underwater creatures, and can automatically collect fishing nets to save manpower. Summary of the invention

[0005] In order to overcome the shortcomings of the existing underwater fishing net salvaging device, when the gripper drags the entire fishing net, the fishing net may catch underwater creatures, resulting in affecting the underwater food chain and biodiversity, and after the fishing net is lifted up, the staff needs to take down the fishing net for collection, which is time-consuming and labor-intensive and affects the fishing net salvaging efficiency. The present invention provides an underwater fishing net salvaging gripper that can cut the fishing net into sections to prevent the fishing net from catching underwater creatures, and can automatically collect the fishing net to save manpower.

[0006] An underwater fishing net salvage gripper comprises an unmanned boat, an impeller, a collecting mechanism, a cutting mechanism and a moving mechanism. The left side of the lower part of the unmanned boat is rotatably connected with the impeller. The unmanned boat is provided with a collecting mechanism capable of salvaging and collecting the fishing net. The collecting mechanism is provided with a cutting mechanism capable of cutting the fishing net. The collecting mechanism is also provided with a moving mechanism capable of automatically salvaging the fishing net.

[0007] Further description, the collecting mechanism includes a connecting shell, a connecting column, a first clamp, a fixed support connecting frame, a first cylinder and a second clamp. The middle part of the unmanned boat is connected to the connecting shell, the middle part of the connecting shell is provided with a connecting column, the lower side of the connecting column is connected to the first clamp, the upper side of the front part of the unmanned boat is connected to the fixed support connecting frame, the upper part of the fixed support connecting frame is connected to the first cylinder, and the telescopic end of the first cylinder is connected to the second clamp. The first cylinder on the fixed support connecting frame is started to make the second clamp enter the connecting shell, so that the second clamp grasps the fishing net, and then the first clamp releases the fishing net, and then continues to push the second clamp to move, so that the second clamp takes the fishing net away from the connecting shell, and then releases the second clamp to make the fishing net fall onto the unmanned boat.

[0008] Further description, a collecting groove is provided at the lower part of the connecting shell.

[0009] Further description, the cutting mechanism includes a guide column, a spring, a hollow column, a threaded column, a first gear, a connecting support frame, a second gear, a cutter and a connecting plate. The upper right part of the connecting shell is slidably connected with the guide column, the guide column is in contact with the connecting column, and a spring is connected between the guide column and the connecting shell. At this time, the spring is in a compressed state. The lower side of the guide column is connected to the hollow column. The lower part of the hollow column is threadedly connected with the threaded column. The threaded column is rotatably connected to the connecting shell. The lower side of the threaded column is connected to the first gear, the lower side of the connecting shell is connected to the connecting support frame, the middle part of the connecting support frame is rotatably connected to the second gear, the second gear is meshed with the first gear, and the connecting support A plurality of cutters are rotatably connected on the frame, and a connecting plate is rotatably connected to the upper side of the cutters, and the connecting plates are rotatably connected to the second gear. The connecting column moves downward in the connecting shell, and at this time the connecting column disengages from the guide column, and the spring rebounds, so that the guide column drives the hollow column to move downward, and the threaded column drives the first gear to rotate, and the first gear meshes with the second gear, so that the connecting plate drives the cutters to rotate, and the cutters move away from each other. After the connecting column contacts the guide column again, it pushes the guide column and the hollow column to move upward, so that the threaded column rotates and resets, and then the second gear rotates and resets, so that the cutters close to each other and close to cut the fishing net.

[0010] Further explanation: the motion mechanism includes a fixed frame, a second cylinder, a connecting flange, a motor, a rotating shaft and a belt. The fixed frame is connected to the right side of the upper part of the connecting shell, the second cylinder is rotatably connected to the upper part of the fixed frame, the connecting flange is connected to the telescopic end of the second cylinder, the connecting column and the connecting flange are detachably connected by multiple bolts, the motor is connected to the left side of the fixed frame, the rotating shaft is connected to the motor output shaft, a belt is wrapped around the rotating shaft and the second cylinder through a transmission wheel, the motor is started to drive the rotating shaft to rotate, and the second cylinder is driven to rotate through the belt transmission, so that the first clamp rotates, which facilitates the first clamp to grasp and collect the fishing net.

[0011] Further description, it also includes a recovery mechanism, which includes a connecting bracket, an electric push rod and a fixed plate. The middle part of the connecting shell is connected to the connecting bracket, the electric push rod is connected to the connecting bracket, and the fixed plate is connected to the telescopic end of the electric push rod. When the connecting column is taken out of the connecting shell, the electric push rod on the connecting bracket is started, so that the fixed plate pushes the guide column to move upward.

[0012] Further description, it also includes a locking mechanism, which includes a screw and a locking plate. The screws are threadedly connected to the front and rear sides of the upper part of the connecting shell, and the locking plates are rotatably connected to the sides where the screws are close to each other. When the connecting column is installed on the connecting flange by bolts, the screws are rotated to make the locking plates approach each other until they contact the connecting column.

[0013] To further explain, a knob is provided on the side of the screw rods that are away from each other.

[0014] Further description, it also includes a protection mechanism, which includes a fixed connecting frame and a connecting hollow ring. The fixed connecting frame is connected to the lower side of the connecting support frame, and the connecting hollow ring is connected to the lower side of the fixed connecting frame. When the fishing net enters the connecting shell, the connecting hollow ring guides the fishing net.

[0015] Further description: the connecting hollow ring is trumpet-shaped.

[0016] The beneficial effects of the present invention are as follows: 1. After the connecting column contacts the guide column again, the present invention pushes the guide column and the hollow column to move upward, so that the threaded column rotates and resets, and then the second gear rotates and resets, so that the cutters close to each other and close to cut the fishing net, thereby achieving the effect of being able to cut the fishing net in sections and preventing the fishing net from catching underwater creatures.

[0017] 2. The present invention starts the first cylinder to make the second jaw enter the connecting shell, so that the second jaw grasps the fishing net, and then makes the first jaw release the fishing net, and then continues to push the second jaw to move, so that the second jaw takes the fishing net away from the connecting shell, and then releases the second jaw, so that the fishing net falls onto the unmanned boat, thereby achieving the effect of automatically collecting the fishing net and saving manpower.

[0018] 3. The present invention achieves the effect of keeping the cutter closed and preventing the cutter from opening and accidentally injuring a worker by starting the electric push rod on the connecting bracket after the connecting column is taken out of the connecting shell, so that the fixing plate pushes the guide column to move upward.

[0019] 4. When the connection column is installed on the connection flange by bolts, the screw rod is rotated to make the positioning plates approach each other until they contact the connection column, thereby achieving the effect of positioning the connection column and facilitating the installation of the connection column.

[0020] 5. When the fishing net enters the connection shell through the present invention, the connecting hollow ring guides the fishing net, thereby achieving the effect of protecting the first gear and the second gear and preventing the fishing net from being entangled. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the collecting mechanism of the present invention.

[0024] Figure 4 It is a three-dimensional structural cross-sectional diagram of the collecting mechanism of the present invention.

[0025] Figure 5 It is a three-dimensional structural cross-sectional view of the cutting mechanism of the present invention.

[0026] Figure 6 It is a sectional view of a first partial three-dimensional structure of the cutting mechanism of the present invention.

[0027] Figure 7 It is a sectional view of a second partial three-dimensional structure of the cutting mechanism of the present invention.

[0028] Figure 8 It is a three-dimensional structural schematic diagram of the motion mechanism of the present invention.

[0029] Fig. 9 It is a three-dimensional structural schematic diagram of the motion mechanism of the present invention.

[0030] Fig.10 It is a three-dimensional structural cross-sectional diagram of the restoration mechanism of the present invention.

[0031] Fig.11 It is a three-dimensional structural schematic diagram of the locking mechanism of the present invention.

[0032] Fig.12 It is a three-dimensional structural schematic diagram of the protection mechanism of the present invention.

[0033] Markings in the accompanying drawings: 1: unmanned boat, 2: impeller, 3: collecting mechanism, 30: connecting shell, 31: connecting column, 32: first clamping jaw, 33: fixed support connecting frame, 34: first cylinder, 35: second clamping jaw, 4: cutting mechanism, 40: guide column, 41: spring, 42: hollow column, 43: threaded column, 44: first gear, 45: connecting support frame, 46: second gear, 47: cutter, 48: connecting plate, 5: moving mechanism, 50: fixed frame, 51: second cylinder, 52: connecting flange, 53: motor, 54: rotating shaft, 55: belt, 6: recovery mechanism, 60: connecting bracket, 61: electric push rod, 62: fixed plate, 7: clamping mechanism, 70: screw rod, 71: clamping plate, 8: protection mechanism, 80: fixed connecting frame, 81: connecting hollow ring. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0035] An underwater fishing net grabber, such as Figure 1 and Figure 2As shown, it includes an unmanned boat 1, an impeller 2, a collecting mechanism 3, a cutting mechanism 4 and a moving mechanism 5. The impeller 2 is rotatably connected to the left side of the lower part of the unmanned boat 1. The unmanned boat 1 is provided with a collecting mechanism 3, the collecting mechanism 3 is provided with a cutting mechanism 4, and the collecting mechanism 3 is also provided with a moving mechanism 5.

[0036] like Figure 1 , Figure 3 and Figure 4 As shown, the collecting mechanism 3 includes a connecting shell 30, a connecting column 31, a first clamp 32, a fixed support connecting frame 33, a first cylinder 34 and a second clamp 35. The middle part of the unmanned boat 1 is connected to the connecting shell 30, and a collecting groove is opened at the lower part of the connecting shell 30 to facilitate the removal of the fishing net. A connecting column 31 is provided in the middle part of the connecting shell 30, and the lower side of the connecting column 31 is connected to the first clamp 32. The upper side of the front part of the unmanned boat 1 is connected to the fixed support connecting frame 33, and the upper part of the fixed support connecting frame 33 is connected to the first cylinder 34, and the second clamp 35 is connected to the telescopic end of the first cylinder 34.

[0037] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, the cutting mechanism 4 includes a guide column 40, a spring 41, a hollow column 42, a threaded column 43, a first gear 44, a connecting support frame 45, a second gear 46, a cutter 47 and a connecting plate 48. The upper right part of the connecting shell 30 is slidably connected with the guide column 40, the guide column 40 is in contact with the connecting column 31, and a spring 41 is connected between the guide column 40 and the connecting shell 30. At this time, the spring 41 is in a compressed state. The lower side of the guide column 40 is connected with a hollow column 42, and the lower part of the hollow column 42 is threaded. A threaded column 43 is connected in a ribbed manner, and the threaded column 43 is rotatably connected to the connecting shell 30. A first gear 44 is connected to the lower side of the threaded column 43. A connecting support frame 45 is connected to the lower side of the connecting shell 30. A second gear 46 is rotatably connected to the middle of the connecting support frame 45. The second gear 46 meshes with the first gear 44. Six cutters 47 are rotatably connected to the connecting support frame 45. A connecting plate 48 is rotatably connected to the upper side of the cutters 47, and the connecting plates 48 are rotatably connected to the second gear 46.

[0038] like Figure 1 , Figure 8 and Fig. 9As shown, the motion mechanism 5 includes a fixed frame 50, a second cylinder 51, a connecting flange 52, a motor 53, a rotating shaft 54 ​​and a belt 55. The fixed frame 50 is connected to the right side of the upper part of the connecting shell 30, the second cylinder 51 is rotatably connected to the upper part of the fixed frame 50, the connecting flange 52 is connected to the telescopic end of the second cylinder 51, the connecting column 31 and the connecting flange 52 are detachably connected by a plurality of bolts, the motor 53 is connected to the left side of the fixed frame 50, the rotating shaft 54 ​​is connected to the output shaft of the motor 53, and a belt 55 is wound around the rotating shaft 54 ​​and the second cylinder 51 through a transmission wheel.

[0039] When using the present invention, firstly, the connecting column 31 is installed on the connecting flange 52 by bolts, and then the unmanned boat 1 is started, and the unmanned boat 1 is moved to the fishing net salvage area by the rotation of the impeller 2, and then the second cylinder 51 on the fixing frame 50 is started to push the connecting flange 52 to move downward, so that the connecting column 31 moves downward in the connecting shell 30, and the connecting column 31 is separated from the guide column 40, and the spring 41 rebounds, so that the guide column 40 drives the hollow column 42 to move downward, so that the threaded column 43 drives the first gear 44 to rotate, and the first gear 44 and the second gear 46 mesh and move, so that the connecting plate 48 drives the cutter 47 to rotate, so that the cutters 47 move away from each other, and then the connecting column 31 and the first clamping claw 32 enter underwater, so that the first clamping claw 32 grasps the fishing net, and the motor 53 is started to drive the rotating shaft 54 ​​to rotate, and the second cylinder 51 is driven to rotate through the belt 55 transmission, so that the first clamping claw 32 rotates, which is convenient for the first clamping claw 32 to grasp and collect the fishing net. Then, the second cylinder 51 is started to move the connecting column 31 upward, so that the first clamping claw 32 carries the fishing net into the connecting shell 30. After the connecting column 31 contacts the guide column 40 again, it pushes the guide column 40 and the hollow column 42 to move upward, so that the threaded column 43 rotates and resets, and then the second gear 46 rotates and resets, so that the cutters 47 close to each other and close to cut the fishing net, thereby playing the role of segmented cutting of the fishing net to prevent the fishing net from catching underwater creatures. After the fishing net is cut, the first cylinder 34 on the fixed support connecting frame 33 is started to make the second clamping claw 35 enter the connecting shell 30, so that the second clamping claw 35 grasps the fishing net, and then the first clamping claw 32 releases the fishing net, and then continues to push the second clamping claw 35 to move, so that the second clamping claw 35 takes the fishing net away from the connecting shell 30, and then releases the second clamping claw 35, so that the fishing net falls onto the unmanned boat 1, thereby automatically collecting the fishing net and saving manpower.

[0040] like Figure 1 and Fig.10 As shown, a restoration mechanism 6 is also included, which includes a connecting bracket 60, an electric push rod 61 and a fixing plate 62. The connecting bracket 60 is connected to the middle of the connecting shell 30, the electric push rod 61 is connected to the connecting bracket 60, and the fixing plate 62 is connected to the telescopic end of the electric push rod 61.

[0041] By using the recovery mechanism 6 of the device, the cutter 47 can be kept closed. When the connecting column 31 is taken out of the connecting shell 30, the electric push rod 61 on the connecting bracket 60 is started, so that the fixing plate 62 pushes the guide column 40 to move upward, thereby keeping the cutter 47 closed and preventing the cutter 47 from opening and accidentally injuring the staff.

[0042] like Figure 1 and Fig.11 As shown, it also includes a locking mechanism 7, which includes a screw rod 70 and a locking plate 71. The screw rods 70 are threadedly connected to the front and rear sides of the upper part of the connecting shell 30. A knob is provided on the side of the screw rods 70 that is away from each other for easy grasping, and the locking plate 71 is rotatably connected to the side of the screw rods 70 that is close to each other.

[0043] By using the locking mechanism 7 of the device, the connecting column 31 can be locked. When the connecting column 31 is installed on the connecting flange 52 by bolts, the screw rod 70 is rotated to make the locking plates 71 approach each other until they contact the connecting column 31, thereby playing the role of locking the connecting column 31 and facilitating the installation of the connecting column 31.

[0044] like Figure 1 and Fig.12 As shown, a protection mechanism 8 is also included, which includes a fixed connecting frame 80 and a connecting hollow ring 81. The fixed connecting frame 80 is connected to the lower side of the connecting support frame 45, and the connecting hollow ring 81 is connected to the lower side of the fixed connecting frame 80. The connecting hollow ring 81 is trumpet-shaped to facilitate guiding the fishing net.

[0045] The protection mechanism 8 of the device can protect the first gear 44 and the second gear 46. When the fishing net enters the connecting shell 30, the connecting hollow ring 81 guides the fishing net, thereby protecting the first gear 44 and the second gear 46 and preventing the fishing net from being entangled.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An underwater fishing net grabber, characterized by: The unmanned boat (1) comprises an unmanned boat (1), an impeller (2), a collecting mechanism (3), a cutting mechanism (4) and a moving mechanism (5); the impeller (2) is rotatably connected to the left side of the lower part of the unmanned boat (1); the unmanned boat (1) is provided with a collecting mechanism (3) capable of salvaging and collecting fishing nets; the collecting mechanism (3) is provided with a cutting mechanism (4) capable of cutting fishing nets; and the collecting mechanism (3) is also provided with a moving mechanism (5) capable of automatically salvaging fishing nets.

2. The underwater fishing net grabber according to claim 1 is characterized in that: The collecting mechanism (3) comprises a connecting shell (30), a connecting column (31), a first clamping claw (32), a fixed support connecting frame (33), a first cylinder (34) and a second clamping claw (35); the middle of the unmanned boat (1) is connected to the connecting shell (30); the middle of the connecting shell (30) is provided with a connecting column (31); the lower side of the connecting column (31) is connected to the first clamping claw (32); the upper side of the front of the unmanned boat (1) is connected to the fixed support connecting frame (33); the upper side of the fixed support connecting frame (33) is connected to the first cylinder (34), a second clamping claw (35) is connected to the telescopic end of the first cylinder (34), the first cylinder (34) on the fixed support connecting frame (33) is started, the second clamping claw (35) enters the connecting shell (30), the second clamping claw (35) grasps the fishing net, and then the first clamping claw (32) releases the fishing net, and then the second clamping claw (35) is continuously pushed to move, so that the second clamping claw (35) takes the fishing net away from the connecting shell (30), and then the second clamping claw (35) is released, so that the fishing net falls onto the unmanned boat (1).

3. The underwater fishing net grabber according to claim 2 is characterized by: A collecting groove is formed at the lower part of the connecting shell (30).

4. The underwater fishing net grabber according to claim 2 is characterized by: The cutting mechanism (4) comprises a guide column (40), a spring (41), a hollow column (42), a threaded column (43), a first gear (44), a connecting support frame (45), a second gear (46), a cutter (47) and a connecting plate (48). The guide column (40) is slidably connected to the upper right part of the connecting shell (30). The guide column (40) is in contact with the connecting column (31). A spring (41) is connected between the guide column (40) and the connecting shell (30). At this time, the spring (41) 1) In a compressed state, the guide column (40) is connected to a hollow column (42) at the bottom, the hollow column (42) is threadedly connected to a threaded column (43) at the bottom, the threaded column (43) is rotatably connected to the connection shell (30), the threaded column (43) is connected to a first gear (44) at the bottom, the connection shell (30) is connected to a connection support frame (45) at the bottom, the connection support frame (45) is rotatably connected to a second gear (46) at the middle, and the second gear (46) is rotatably connected to the first gear (44). The connecting support frame (45) is rotatably connected to a plurality of cutters (47), and the upper sides of the cutters (47) are rotatably connected to connecting plates (48). The connecting plates (48) are rotatably connected to the second gear (46). The connecting column (31) moves downward in the connecting shell (30). At this time, the connecting column (31) is separated from the guide column (40), and the spring (41) rebounds, so that the guide column (40) drives the hollow column (42) to move downward, so that the threaded column (43) drives the first The gear (44) rotates, and the first gear (44) and the second gear (46) mesh and move, so that the connecting plate (48) drives the cutters (47) to rotate, so that the cutters (47) move away from each other. After the connecting column (31) contacts the guide column (40) again, it pushes the guide column (40) and the hollow column (42) to move upward, so that the threaded column (43) rotates and resets, and then the second gear (46) rotates and resets, so that the cutters (47) move closer to each other and close to cut the fishing net.

5. The underwater fishing net grabber according to claim 4 is characterized by: The motion mechanism (5) comprises a fixed frame (50), a second cylinder (51), a connecting flange (52), a motor (53), a rotating shaft (54) and a belt (55). The upper right side of the connecting shell (30) is connected to the fixed frame (50), the upper part of the fixed frame (50) is rotatably connected to the second cylinder (51), the telescopic end of the second cylinder (51) is connected to the connecting flange (52), the connecting column (31) and the connecting flange (52) are detachably connected via a plurality of bolts, the left side of the fixed frame (50) is connected to the motor (53), the output shaft of the motor (53) is connected to the rotating shaft (54), a belt (55) is wound around the rotating shaft (54) and the second cylinder (51) via a transmission wheel, the motor (53) is started to drive the rotating shaft (54) to rotate, and the second cylinder (51) is driven to rotate via the belt (55), so that the first clamping claw (32) rotates, so that the first clamping claw (32) can grasp and collect the fishing net.

6. The underwater fishing net grabber according to claim 5 is characterized by: The invention also comprises a restoring mechanism (6), the restoring mechanism (6) comprising a connecting bracket (60), an electric push rod (61) and a fixing plate (62); the connecting bracket (60) is connected to the middle of the connecting shell (30); the connecting bracket (60) is connected to the electric push rod (61); the telescopic end of the electric push rod (61) is connected to the fixing plate (62); when the connecting column (31) is taken out of the connecting shell (30), the electric push rod (61) on the connecting bracket (60) is started, so that the fixing plate (62) pushes the guide column (40) to move upward.

7. The underwater fishing net grabber according to claim 6 is characterized by: The device also includes a locking mechanism (7), which includes a screw rod (70) and a locking plate (71). The screw rod (70) is threadedly connected to both the front and rear sides of the upper portion of the connection shell (30), and the locking plate (71) is rotatably connected to the side of the screw rod (70) that is close to each other. When the connection column (31) is mounted on the connection flange (52) by bolts, the screw rod (70) is rotated to make the locking plate (71) close to each other until it contacts the connection column (31).

8. The underwater fishing net grabber according to claim 7 is characterized by: A knob is provided on each side of the screw rod (70) that is away from each other.

9. The underwater fishing net grabber according to claim 7 is characterized by: The invention also comprises a protection mechanism (8), the protection mechanism (8) comprising a fixed connection frame (80) and a connection hollow ring (81), the fixed connection frame (80) being connected to the lower side of the connection support frame (45), the connection hollow ring (81) being connected to the lower side of the fixed connection frame (80), and the connection hollow ring (81) guiding the fishing net when the fishing net enters the connection shell (30).

10. The underwater fishing net grabber according to claim 9, characterized in that: The connecting hollow ring (81) is horn-shaped.