Large fishing net bag turning device

Abstract

A large fishing net bag turning device comprises a base arranged on a deck, a rotating base and a rotating driving device which are arranged on the base, a suspension arm connected to the rotating base, a variable amplitude driving device connected with the rotating base and the suspension arm, and a first lifting twisting structure and a second lifting twisting structure which are arranged on the suspension arm. The lifting arm is driven by the rotary driving device and the variable-amplitude driving device to rotate and lift, the first lifting structure lifts a net opening of the fishing net, the second lifting structure lifts a net bottom of the fishing net, and the first lifting structure and the second lifting structure are matched to turn over the fishing net to release living bodies in the net. The fishing net bag overturning device is efficient, safe and easy to operate, and the problems that a traditional fishing net is inconvenient to overturn, and residues exist in the fishing net are solved.

Description

Technical Field

[0001] The invention belongs to the field of ship lifting devices, and in particular relates to a large-scale fishing net bag turning device. Background Art

[0002] Offshore aquaculture refers to aquaculture activities carried out in open waters far from the coastline. Compared with nearshore aquaculture, offshore aquaculture has a wider water space and a more stable marine environment, which makes large-scale and high-density aquaculture possible. In recent years, with the growth of people's demand for high-quality aquatic products and the advancement of technology, offshore aquaculture has developed rapidly as a sustainable aquaculture model and has received attention as an emerging industry with high investment and high returns. Large-scale aquaculture is a systematic project that requires a whole ship platform that is jointly constructed by aquatic products, ships, oceans, and information.

[0003] In offshore aquaculture, the transfer of fish is an important link, especially during harvest season or when the aquaculture area needs to be adjusted. Traditional transfer methods usually involve using fishing nets to gather the fish and then transferring them to the designated location through various means.

[0004] The existing transfer method mostly uses manual transfer, but for large aquaculture cages, relying entirely on manual transfer of fish is not only time-consuming but also labor-intensive. As part of the ship system, the ship's lifting equipment mainly assists the ship in lifting cargo. When using a crane to transport large fishing nets, due to the large size and uneven weight of the net bags, it is easy to cause difficulty in turning the fishing nets during operation. During the transfer process, some fish may remain in the net due to incomplete turning of the fishing net, resulting in unnecessary losses. Summary of the invention

[0005] The present invention aims to provide a large-scale fishing net bag turning device to solve the technical problem of rapid turning of fishing nets in large-scale aquaculture cages.

[0006] To achieve the above purpose, the specific technical solution of a large-scale fishing net bag turning device of the present invention is as follows:

[0007] A large-scale fishing net bag turning device comprises a base arranged on a deck, a rotating base and a rotating driving device arranged on the base, a boom connected to the rotating base, a variable amplitude driving device connecting the rotating base and the boom, and a first lifting winch structure and a second lifting winch structure arranged on the boom;

[0008] The boom is driven to rotate and rise and fall by the rotation drive device and the amplitude change drive device. The first lifting structure realizes the lifting and falling of the mouth of the fishing net, and the second lifting structure realizes the lifting and falling of the bottom of the fishing net. The two cooperate to realize the flipping of the fishing net to release the living things in the net.

[0009] As a further improvement of the present invention, the first lifting structure includes a first lifting winch arranged on the boom, a first pulley group arranged on the boom, and a first hook; the rope extends from the first lifting winch, passes through the first pulley group, and is connected to the first hook; the second lifting structure includes a first lifting winch arranged on the boom, a second pulley group arranged on the boom, and a second hook; the rope extends from the second lifting winch, passes through the second pulley group, and is connected to the second hook.

[0010] As a further improvement of the present invention, the amplitude variation drive device includes an amplitude variation cylinder body connected to the rotating base, and an amplitude variation rod extending from the amplitude variation cylinder body and connected to the boom; the amplitude variation rod is telescoped relative to the amplitude variation cylinder body to realize the lifting and lowering of the boom.

[0011] As a further improvement of the present invention, the device of the present invention further comprises a control structure, wherein the control structure controls the driving of the rotation drive device, the amplitude change drive device, the first lifting winch and the second lifting winch.

[0012] As a further improvement of the present invention, the rotation drive device, the amplitude change drive device, the first hoisting winch and the second hoisting winch are hydraulically driven, and the control structure includes a hydraulic control system.

[0013] As a further improvement of the present invention, the hydraulic control system includes a rotary valve group for controlling the rotation of the rotary drive device, a variable amplitude valve group for controlling the extension and retraction of the variable amplitude drive device, and a first winch valve group and a second winch valve group for controlling the forward and reverse rotation of the first lifting winch and the second lifting winch.

[0014] As a further improvement of the present invention, the hydraulic control system also includes a plurality of control valve groups respectively connected to the rotary valve group, the luffing valve group, the first winch valve group and the second winch valve group, and the hydraulic oil is guided to the A / B oil ports of the rotary valve group, the luffing valve group, the first winch valve group and the second winch valve group through the control valve groups.

[0015] As a further improvement of the present invention, a proportional valve is provided in the control valve group, and the hydraulic oil is guided to the A / B oil ports of the rotary valve group, the luffing valve group, the first winch valve group and the second winch valve group after passing through the proportional valve.

[0016] Beneficial effects:

[0017] The device of the present invention realizes automatic lifting, rotation and flipping of the fishing net by arranging a rotation drive device, a variable amplitude drive device, a first lifting winch structure and a second lifting winch structure, greatly improves the automation level of the operation and reduces the labor cost.

[0018] The device of the present invention can achieve precise control. Through the control structure (such as the hydraulic control system), the rotation angle of the boom, the amplitude change height, and the working conditions of the first lifting winch structure and the second lifting winch structure can be conveniently adjusted, making the entire operation process simpler and more flexible.

[0019] The first lifting winch is used to lift the fishing net, and the second lifting winch is used to lift the bottom of the fishing net. The two work together to effectively achieve rapid flipping of the fishing net, ensuring that the living organisms in the net can be released quickly and completely, improving the transfer efficiency. Since the fishing net can be accurately flipped, the problem of fish residue caused by incomplete flipping in traditional methods is avoided, thereby reducing unnecessary economic losses. By accurately controlling the flipping action of the fishing net, damage to the fishing net or personal injury caused by improper operation is avoided, improving the safety of the entire operation process.

[0020] The use of hydraulic drive not only ensures the stability and reliability of the device operation, but also facilitates maintenance, further reducing the cost of long-term operation.

[0021] The device of the present invention is suitable for fishing nets of different sizes, and can adapt to various types of aquaculture cages by adjusting the amplitude change and rotation of the boom, thereby enhancing the application range of the equipment.

[0022] In summary, the present invention provides a large-scale fishing net bag turning device that is efficient, safe and easy to operate, which solves the problems existing in the traditional fishing net turning method and is of great significance for improving the efficiency and economic benefits of offshore aquaculture operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a large-scale fishing net bag turning device of the present invention;

[0024] Figure 2 This is the hydraulic principle diagram of the control system;

[0025] Figure 3 This is the hydraulic principle diagram of the control valve group;

[0026] Explanation of marks in the figure: 10, base; 20, rotating base; 30, rotating drive device; 40, boom; 50, luffing drive device; 51, luffing cylinder; 52, luffing rod; 61, first lifting winch; 62, first pulley block; 63, first hook; 71, second lifting winch; 72, second pulley block; 73, second hook; 81, rotating valve group; 82, luffing valve group; 83, first winch valve group; 84, second winch valve group; 85, control valve group; 86, oil tank; 87, pressure compensation valve; 88, proportional valve. DETAILED DESCRIPTION

[0027] In order to better understand the purpose, structure and function of the present invention, a large-scale fishing net bag turning device of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] Implementation example:

[0029] like Figure 1 As shown, a large-scale fishing net bag turning device, the base 10 is fixedly arranged on the deck of the ship as the support of the whole device, the rotating base 20 is rotatably arranged on the upper end surface of the base 10, and the rotating drive device 30 passes through the rotating base 20 and is arranged on the upper end surface of the base 10, one end of the boom 40 is arranged on the upper end of the rotating base 20, and the other end extends outward, the variable amplitude cylinder 51 in the variable amplitude drive device 50 is arranged on the rotating base 20, and the variable amplitude rod 52 extends from the variable amplitude cylinder 51 and is connected to the boom 40. The rotating drive device 30 realizes the rotation of the boom 40, and the variable amplitude drive device 50 realizes the adjustment of the rotation radius of the boom 40.

[0030] The first hoisting winch 61 is arranged above the boom 40, and the rope is conveyed forward along the boom 40. The first pulley block 62 is arranged at the front end of the boom 40. The rope of the first hoisting winch 61 passes through the first pulley block 62 and then changes direction to connect to the first hook 63. The second hoisting winch 71 is arranged below the boom 40, and the rope is conveyed forward along the boom 40. The second pulley block 72 is arranged below the front side of the boom 40. The rope of the second hoisting winch 71 passes through the second pulley block 72 and then connects to the second hook 73.

[0031] When in use, firstly, the rotary drive device 30 provides power to drive the rotary base 20 to rotate, and the rotary base 20 is used to control the boom 40 to come to the fry replenishment area, and the variable amplitude drive device 50 is used to adjust the working radius so that the boom 40 is in the correct working area, and then the first lifting winch 61 is used to connect the lifting fishing net through the rope and the first hook 63, and the second lifting winch 71 and the second hook 73 are used to connect the tail end of the fishing net, and the second pulley block 72 adjusts the lifting direction and position. After lifting the fishing net, the rotary drive device 30 provides power to drive the rotary base 20 to rotate, and rotates the boom 40 to the fry cabin. The first lifting structure lowers the fishing net into the water in the fry cabin. The second lifting winch 71 turns the fishing net over through the second hook 73 so that the fry can enter the cabin normally.

[0032] like Figure 2 As shown, in this embodiment, the control structure controls the driving of the rotary drive device 30, the luffing drive device 50, the first hoisting winch 61 and the second hoisting winch 71 through the hydraulic control system. The hydraulic control system includes a rotary valve group 81 for controlling the rotation of the rotary drive device 30, a luffing valve group 82 for controlling the extension and retraction of the luffing drive device 50, and a first winch valve group 83 and a second winch valve group 84 for driving the first hoisting winch 61 and the second hoisting winch 71 to rotate forward and reverse. Four parallel control valve groups 85 are respectively connected to the rotary valve group 81, the luffing valve group 82, the first winch valve group 83 and the second winch valve group 84, and the hydraulic oil is guided to the A / B oil ports of the rotary valve group 81, the luffing valve group 82, the first winch valve group 83 and the second winch valve group 84 through the control valve group 85.

[0033] Take the hydraulic principle of the first winch valve group 83 and the control valve group 85 as an example. Figure 3 As shown, when the first winch 61 is lifted, the hydraulic oil is discharged from the oil tank 86 into the control valve group 85, and the hydraulic oil passes through the pressure compensation valve 87 and the proportional valve 88 in sequence and enters the lifting port of the first winch, and enters the port A of the hydraulic motor while opening the brake, driving the hydraulic motor to rotate forward and tighten the rope. When the first winch 61 is lowered, the control valve group 85 adjusts the valve core position of the proportional valve 88 so that the hydraulic oil passes through the pressure compensation valve 51 and the proportional valve 52 in sequence and enters the lowering port of the first winch, and enters the port B of the hydraulic motor while opening the brake, and the hydraulic oil drives the hydraulic motor to reverse and loosen the rope. The lifting and lowering of the second winch 71, the rotation of the rotary drive device 30, and the extension and retraction of the variable amplitude drive device 50 are similar to the lifting and lowering principles of the first winch 61.

[0034] The device of the present invention can realize efficient operation of the fishing net through rotation and amplitude variation, in conjunction with two independent lifting systems. This not only improves work efficiency, but also reduces the labor intensity of fishermen. With the functions of rotation and amplitude variation, the boom can be operated in different positions, which increases the operational flexibility of the equipment and is suitable for use in complex and changeable marine environments. Through the cooperation of the first lifting winch and the second lifting winch, the turning process of the fishing net can be accurately controlled to ensure that the living organisms in the net can be released safely and completely. A control structure is set to coordinate the actions of each drive device, which helps to improve the level of automation and reduce the need for manual intervention. With a hydraulic drive system, components such as proportional valves in the hydraulic control system can accurately control the movement of each part, improving the reliability and stability of the system. The device integrates functions such as rotation, amplitude variation and lifting, is suitable for a variety of operating scenarios, and improves the versatility of the equipment. The design of the hydraulic control system facilitates daily maintenance and troubleshooting, reducing the maintenance cost of the equipment.

[0035] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A large-scale fishing net bag turning device, characterized in that: It includes a base arranged on the deck, a rotating base and a rotating driving device arranged on the base, a boom connected to the rotating base, a variable amplitude driving device connecting the rotating base and the boom, and a first lifting winch structure and a second lifting winch structure arranged on the boom; The boom is driven to rotate and rise and fall by the rotation drive device and the amplitude change drive device. The first lifting structure realizes the lifting and falling of the mouth of the fishing net, and the second lifting structure realizes the lifting and falling of the bottom of the fishing net. The two cooperate to realize the flipping of the fishing net to release the living things in the net.

2. The large-scale fishing net bag turning device according to claim 1 is characterized in that: The first lifting structure includes a first lifting winch arranged on the boom, a first pulley block arranged on the boom, and a first hook; a rope extends from the first lifting winch through the first pulley block and is connected to the first hook; The second lifting structure includes a first lifting winch arranged on the boom, a second pulley block arranged on the boom, and a second hook; a rope extends from the second lifting winch, passes through the second pulley block, and is connected to the second hook.

3. The large-scale fishing net bag turning device according to claim 1 is characterized in that: The amplitude change driving device comprises an amplitude change cylinder body connected to the rotating base, and an amplitude change rod extending from the amplitude change cylinder body and connected to the boom; the amplitude change rod is extended and retracted relative to the amplitude change cylinder body to realize the lifting and lowering of the boom.

4. The large-scale fishing net bag turning device according to claim 2 is characterized in that: It also includes a control structure, which controls the driving of the rotation drive device, the variable amplitude drive device, the first hoisting winch and the second hoisting winch.

5. The large-scale fishing net bag turning device according to claim 4 is characterized in that: The rotation drive device, the amplitude change drive device, the first hoisting winch and the second hoisting winch are hydraulically driven, and the control structure includes a hydraulic control system.

6. The large-scale fishing net bag turning device according to claim 5, characterized in that: The hydraulic control system includes a rotary valve group for controlling the rotation of the rotary drive device, a variable amplitude valve group for controlling the extension and retraction of the variable amplitude drive device, and a first winch valve group and a second winch valve group for controlling the forward and reverse rotation of the first lifting winch and the second lifting winch.

7. The large-scale fishing net bag turning device according to claim 6, characterized in that: The hydraulic control system also includes a plurality of control valve groups respectively connected to the rotary valve group, the luffing valve group, the first winch valve group and the second winch valve group, and the hydraulic oil is directed to the A / B oil ports of the rotary valve group, the luffing valve group, the first winch valve group and the second winch valve group through the control valve groups.

8. The large-scale fishing net bag turning device according to claim 7, characterized in that: A proportional valve is provided in the control valve group, and the hydraulic oil is guided to the A / B oil ports of the rotary valve group, the luffing valve group, the first winch valve group and the second winch valve group after passing through the proportional valve.

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