A tuna longline hook guard and method of operation thereof

Abstract

This invention discloses a tuna longline fishing hook protection device, comprising a first fixed bracket 10, a second fixed bracket 11, a fixing buckle 5, a baffle 6, a fixed pulley 7, bolts, bolt holes 3, and U-shaped holes 9. The bolts include a first bolt, a second bolt 4, and a third bolt 8. The first fixed bracket 10 and the second fixed bracket 11 each have corresponding screw holes. The second bolt 4 passes through the screw holes on the first fixed bracket 10 and the second fixed bracket 11. The top of the baffle 6 is connected to the second bolt 4. During operation, the baffle 6 is vertically downwards, perpendicular to the cross-section of the fixed pulley 7. The fixed pulley 7 is fixed between the first fixed bracket 10 and the second fixed bracket 11 by the third bolt 8. The upper part of the second fixed bracket 11 has bolt holes 3. This application has a simple structure and can effectively prevent the tuna longline leader from following the main line into the boat's interior, stopping the leader hook suspended on the main line, allowing the crew to retrieve the leader in time.

Description

Technical Field

[0001] This invention relates to a tuna longline fishing hook-up device and its operating method, specifically a device that carries a tuna longline main line to prevent the leader line from moving too fast and failing to be retrieved in time. Background Technology

[0002] Tuna are a group of marine fish belonging to the class Osteichthyes, order Scombroids, and family Scombridae. Tuna have conical ends, a moderately sized mouth, and well-developed teeth. Tuna longline fishing is a traditional method of catching tuna, typically used for large-scale fishing. Tuna fishing vessels are usually equipped with specialized tuna longline fishing gear, including large-capacity spools of fishing line, hooks of various sizes, floats, and weights. Refrigeration facilities are also necessary on board to preserve the caught tuna. The operation of tuna longline fishing generally involves first deploying pre-prepared baited hooks and floats into the sea using a casting machine. After several hours, the crew locates the float, connects the main line to the retrieval machine, and controls the speed of the retrieval machine via valves to retrieve the main line, hooks suspended on the leader line, and the catch.

[0003] When tuna longline fishing vessels are in operation, the hook-lifting speed of the control valve is relatively fast and unstable. As a result, the crew often fails to remove the leader line hanging on the main line in time, which affects work efficiency and personal safety. Moreover, during the retrieval of the tuna longline hook, the main line of the longline fishing sometimes runs over the pulley. Therefore, a device is proposed to prevent the leader line of the tuna longline fishing from following the main line into the boat, to prevent the longline fishing main line from deviating, and to retrieve the leader line hanging on the main line in time. Summary of the Invention

[0004] The purpose of this invention is to provide a tuna longline fishing hook protection device. It is a device with a simple and reasonable structure that can effectively prevent the tuna longline leader from following the main line into the boat, prevent the longline from deviating from the pulley, and stop the leader hanging on the main line, so that the crew can retrieve the leader in time.

[0005] This application is achieved through the following technical solution:

[0006] A tuna longline fishing hook protection device includes a first fixed bracket 10, a second fixed bracket 11, a fixing buckle 5, a baffle 6, a fixed pulley 7, bolts, bolt holes 3, and U-shaped holes 9. The bolts include a first bolt, a second bolt 4, and a third bolt 8. The first fixed bracket 10 and the second fixed bracket 11 are respectively provided with corresponding screw holes. The second bolt 4 passes through the screw holes on the first fixed bracket 10 and the second fixed bracket 11. The top of the baffle 6 is connected to the second bolt 4. During operation, the baffle 6 is vertically downward and perpendicular to the cross-section of the fixed pulley 7. The fixed pulley 7 is fixed between the first fixed bracket 10 and the second fixed bracket 11 by the third bolt 8. The upper part of the second fixed bracket 11 is provided with bolt holes 3. The first bolt passes through the bolt holes 3 to suspend the entire protection device in the air or fix it in the working position.

[0007] Furthermore, there are two fixing buckles 5, which are located on the inner side of the second fixing bracket 11, to fix the baffle 6 in a vertical position and ensure that the baffle 6 will not slide or move during operation.

[0008] Furthermore, the baffle 6 is a square partition, which is fixed between the first fixed bracket 10 and the second fixed bracket 11 by the second bolt 4. The baffle 6 can rotate freely on the second bolt 4, and the position of the baffle 6 can be flexibly adjusted to meet different operating requirements.

[0009] Furthermore, the fixed pulley 7 is installed in the center of the entire protective device and fixed by the third bolt 8. The fixed pulley 7 is used to guide and support the main line 2 of the longline fishing, ensuring that the main line 2 can run smoothly and avoid tangling or friction.

[0010] Furthermore, the U-shaped hole 9 is located below the second bolt 4 at the top of the protective device. The U-shaped hole 9 is used to control the main line 2 of the longline fishing above the fixed pulley 7.

[0011] Furthermore, after passing through the U-shaped hole 9, the busbar 2 is guided by the fixed pulley 7 to ensure that the busbar 2 maintains the correct position and orientation in the protection device.

[0012] Furthermore, the first fixed bracket 10 and the second fixed bracket 11 are made of corrosion-resistant metal materials, and the outer layer of the baffle 6 is wrapped with shock-absorbing material to prevent ejection after impact.

[0013] The operation method of a tuna longline fishing hook-setting protection device specifically includes the following steps:

[0014] (1) The hook 1 of the leader line of the longline fishing is suspended on the main line 2 of the longline fishing;

[0015] (2) During the process of tuna longline fishing, the protective device is fixed and suspended in a certain position through bolt hole 3;

[0016] (3) The fixing buckle 5 is used to fix the baffle 6 to prevent the baffle 6 from shifting or rotating due to the impact of the hook 1 during the retraction of the busbar 2.

[0017] (4) Rotate the second bolt 4 to drive the baffle 6 to rotate, so as to facilitate untangling the wire in case of tangling.

[0018] (5) Connect the tuna longline fishing line 2 to the hook-lifting machine by setting it through the U-shaped hole 9 and below the baffle 6 above the fixed pulley 7. Rotate the second bolt (4) to make the baffle 6 be directly above the fixed pulley 7.

[0019] (6) The third bolt 8 is located at the center of the protective device and fixes the fixed pulley 7 between the first fixed bracket 10 and the second fixed bracket 11 by passing through the center hole of the fixed pulley 7.

[0020] (7) During the longline fishing process, the hook-lifting machine rotates and drives the main line 2. The main line 2 passes above the fixed pulley 7, which in turn drives the fixed pulley 7 to rotate.

[0021] (8) When the hook 1 of the sub-line suspended on the main line 2 passes above the fixed pulley 7, it will be forced to stop by the baffle 6 to prevent the sub-line from entering the boat. At this time, the sub-line suspended on the main line 2 is removed and stored in the box of the longline fishing hook.

[0022] The technical principle of this invention is to optimize the process of tuna longline fishing where the high speed of the main line during hook-lifting causes the leader line to be unable to be removed in time. A detachable and openable baffle is designed above the fixed pulley through which the main line passes, to solve the problem of the leader line being forced to stop due to the large hook hanging on the main line. The baffle allows the main line to pass smoothly through the fixed pulley, while the hook stops due to the obstruction of the baffle, providing the crew with convenience and time to retrieve the leader line in time. When installing the longline, the U-shaped hole design not only effectively prevents the main line from deviating from the fixed pulley during operation but also saves operation time.

[0023] Beneficial effects: The various components of the protective device of this application are precisely matched, enabling it to provide effective protection while ensuring operational flexibility and stability during use, specifically including the following aspects:

[0024] 1. The design not only improves the efficiency of longline fishing operations, but also greatly reduces the risk of damage to tuna during the hook-and-hook process.

[0025] 2. Preventing the leader line from entering the boat: The device of this application has a simple structure and can effectively prevent the tuna longline fishing leader line from entering the boat along with the main line. Through the cooperation of the baffle and the fixed pulley, the hook is forced to stop, and the crew can handle and retrieve the leader line in time.

[0026] 3. Improved work efficiency: During the retrieval process along the longline, the hook suspended on the main line will automatically stop due to the tight cooperation between the baffle and the fixed pulley. This eliminates the need for the crew to brake the valve in advance to reduce the speed and remove the hook, greatly improving work efficiency.

[0027] 4. Reduced work risks: Effectively prevents the suspended leader and fishhook from entering the cabin along the main line on the fixed pulley, reducing the risk of accidents during the work process.

[0028] 5. Convenient busbar installation: Installing the busbar through the U-shaped hole is not only simple and quick, but also stabilizes the busbar's running path, preventing the busbar from deviating from the fixed pulley, thus further improving operational efficiency and safety.

[0029] 6. It has significant application value and technical advantages in tuna longline fishing operations. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the working state of a tuna longline fishing hook protection device according to the present invention.

[0031] Figure 2 This is a front view of an embodiment of the present invention.

[0032] Figure 3 This is a side view of an embodiment of the present invention.

[0033] The symbols in the diagram represent: 1. Hook; 2. Busbar; 3. Bolt hole; 4. Second bolt; 5. Fixing buckle; 6. Baffle; 7. Fixed pulley; 8. Bolt; 9. U-shaped hole; 8. Third bolt; 10. First fixing bracket; 11. Second fixing bracket. Detailed Implementation

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings: These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0035] like Figure 1-3As shown, a tuna longline fishing hook protection device includes a first fixed bracket 10, a second fixed bracket 11, a fixing buckle 5, a baffle 6, a fixed pulley 7, bolts, bolt holes 3, and U-shaped holes 9. The bolts include a first bolt, a second bolt 4, and a third bolt 8. The first fixed bracket 10 and the second fixed bracket 11 are respectively provided with corresponding screw holes. The second bolt 4 passes through the screw holes on the first fixed bracket 10 and the second fixed bracket 11. The top of the baffle 6 is connected to the second bolt 4. During operation, the baffle 6 is vertically downward and perpendicular to the cross-section of the fixed pulley 7. The fixed pulley 7 is fixed between the first fixed bracket 10 and the second fixed bracket 11 by the third bolt 8. The upper part of the second fixed bracket 11 is provided with bolt holes 3. The first bolt passes through the bolt holes 3 to suspend the entire protection device in the air or fix it in the working position.

[0036] Two fixing buckles 5 are provided, located on the inner side of the second fixing bracket 11, to fix the baffle 6 in a vertical position, ensuring that the baffle 6 will not slide or move during operation. The baffle 6 is a square partition, fixed between the first fixing bracket 10 and the second fixing bracket 11 by the second bolt 4. The baffle 6 can rotate freely on the second bolt 4, and the position of the baffle 6 can be flexibly adjusted to meet different operating needs.

[0037] The fixed pulley 7 is installed in the center of the entire protective device and fixed by the third bolt 8. The fixed pulley 7 is used to guide and support the longline 2, ensuring that the longline 2 can run smoothly and avoid tangling or friction. The U-shaped hole 9 is located below the second bolt 4 at the top of the protective device. The U-shaped hole 9 is used to control the longline 2 above the fixed pulley 7. After the longline 2 passes through the U-shaped hole 9, it is guided by the fixed pulley 7, ensuring that the longline 2 maintains the correct position and direction in the protective device. The first fixed bracket 10 and the second fixed bracket 11 are made of corrosion-resistant metal materials, and the outer layer of the baffle 6 is wrapped with shock-absorbing material to prevent ejection after impact.

[0038] The operation method of a tuna longline fishing hook-setting protection device specifically includes the following steps:

[0039] (1) The hook 1 of the leader line of the longline fishing is suspended on the main line 2 of the longline fishing;

[0040] (2) During the process of tuna longline fishing, the protective device is fixed and suspended in a certain position through bolt hole 3;

[0041] (3) The fixing buckle 5 is used to fix the baffle 6 to prevent the baffle 6 from shifting or rotating due to the impact of the hook 1 during the retraction of the busbar 2.

[0042] (4) Rotate the second bolt 4 to drive the baffle 6 to rotate, so as to facilitate untangling the wire in case of tangling.

[0043] (5) Connect the tuna longline fishing line 2 to the hook-lifting machine by setting it through the U-shaped hole 9 and below the baffle 6 above the fixed pulley 7. Rotate the second bolt (4) to make the baffle 6 be directly above the fixed pulley 7.

[0044] (6) The third bolt 8 is located at the center of the protective device and fixes the fixed pulley 7 between the first fixed bracket 10 and the second fixed bracket 11 by passing through the center hole of the fixed pulley 7.

[0045] (7) During the longline fishing process, the hook-lifting machine rotates and drives the main line 2. The main line 2 passes above the fixed pulley 7, which in turn drives the fixed pulley 7 to rotate.

[0046] (8) When the hook 1 of the sub-line suspended on the main line 2 passes above the fixed pulley 7, it will be forced to stop by the baffle 6 to prevent the sub-line from entering the boat. At this time, the sub-line suspended on the main line 2 is removed and stored in the box of the longline fishing hook.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A tuna longline hook guard device, characterised in that, The device includes a first fixed bracket (10), a second fixed bracket (11), a fixing buckle (5), a baffle (6), a fixed pulley (7), bolts, bolt holes (3), and a U-shaped hole (9). The bolts include a first bolt, a second bolt (4), and a third bolt (8). The first fixed bracket (10) and the second fixed bracket (11) are respectively provided with corresponding screw holes. The second bolt (4) passes through the screw holes on the first fixed bracket (10) and the second fixed bracket (11). The top of the baffle (6) is connected to the second bolt (4). When working, the baffle (6) is vertically downward and perpendicular to the cross-section of the fixed pulley (7). The fixed pulley (7) is fixed between the first fixed bracket (10) and the second fixed bracket (11) by the third bolt (8). The upper part of the second fixed bracket (11) is provided with a bolt hole (3). The first bolt passes through the bolt hole (3) to suspend the entire protective device. The baffle (6) is a square partition that is fixed between the first fixed bracket (10) and the second fixed bracket (11) by the second bolt (4). The baffle (6) can rotate freely on the second bolt (4). The position of the baffle (6) can be flexibly adjusted to meet different operational needs. The fixed pulley (7) is installed in the center of the entire protection device and fixed by the third bolt (8). The fixed pulley (7) is used to guide and support the main line (2) of the longline fishing, ensuring that the main line (2) can run smoothly and avoid tangling or friction. The U-shaped hole (9) is set below the second bolt (4) at the top of the protection device. The U-shaped hole (9) is used to control the main line (2) of the longline fishing above the fixed pulley (7). After the main line (2) passes through the U-shaped hole (9), it is guided by the fixed pulley (7) to ensure that the main line (2) maintains the correct position and direction in the protection device.

2. A tuna longline hook guard according to claim 1, characterised in that, Two fixing buckles (5) are provided, located on the inner side of the second fixing bracket (11), to fix the baffle (6) in a vertical position and ensure that the baffle (6) will not slide or move during operation.

3. A tuna longline hook guard according to claim 1, characterised in that, The first fixed bracket (10) and the second fixed bracket (11) are made of corrosion-resistant metal materials, and the outer layer of the baffle (6) is wrapped with shock-absorbing material to prevent ejection after impact.

4. A method of operating a tuna longline hook guard as claimed in claim 1, characterised by, Specifically, the following steps are included: (1) The hook (1) of the leader line of the longline fishing is suspended on the main line (2) of the longline fishing; (2) During the process of tuna longline fishing, the protective device is fixed and suspended in a certain position through the bolt hole (3); (3) The fixing buckle (5) is used to fix the baffle (6) to prevent the baffle (6) from shifting or rotating due to the impact of the hook (1) during the retraction of the busbar (2); (4) Rotate the second bolt (4) to drive the baffle (6) to rotate, so as to facilitate untangling the line in case of tangling. (5) Connect the tuna longline fishing line (2) to the hook-lifting machine by setting it through the U-shaped hole (9) under the upper baffle (6) of the fixed pulley (7), and rotate the second bolt (4) to make the baffle (6) be directly above the fixed pulley (7); (6) The third bolt (8) is located at the center of the protective device. It fixes the fixed pulley (7) between the first fixed bracket (10) and the second fixed bracket (11) by passing through the center hole of the fixed pulley (7). (7) During the longline fishing process, the hook-lifting machine rotates and drives the main line (2). The main line (2) passes above the fixed pulley (7), which in turn drives the fixed pulley (7) to rotate. (8) When the hook (1) of the sub-line suspended on the main line (2) passes above the fixed pulley (7), it will be forced to stop by the baffle (6) to prevent the sub-line from entering the boat. At this time, the sub-line suspended on the main line (2) is removed and stored in the box of the longline fishing hook.

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