Marine fishery breeding work ship water taking cantilever and using method

Abstract

The invention relates to a water taking cantilever of a marine fishery breeding work ship and a using method. The problems that in the prior art, a cantilever is unstable in positioning and poor in operation safety in the deep water taking process are solved. By arranging an anti-friction roller and an electromagnetic chuck, it is ensured that the water taking cantilever stably moves in the lowering process, and collision or friction between the water taking cantilever and a hull outer plate is avoided; and after the cantilever reaches the target water taking depth, the electromagnetic chuck is electrified for adsorption, the cantilever is fixed and prevented from swinging, and the stability of water taking operation is guaranteed. A reset device and a moving pair structure between the anti-friction roller and the water taking cantilever enable the cantilever to effectively overcome vibration and keep the initial position. The water taking cantilever is provided with a pump and a water taking pipe supported by a bearing and can rotate along with the cantilever, and the water taking process is guaranteed to be smooth. By controlling the adsorption time of the electromagnetic chuck and flexibly adjusting the moving pair, safe and efficient operation of the cantilever under the complex sea condition is achieved, and the water taking efficiency and the operation reliability of marine fishery breeding are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of deep water intake for marine fishery aquaculture, and particularly relates to a water intake cantilever for a marine fishery aquaculture workboat and a using method thereof. Background Art

[0002] When marine fishery aquaculture workboats breed some high-value economic fish species, they need to draw deep, low-temperature and clean seawater to reduce the disease rate and improve the quality of marketable fish. At present, large marine fishery aquaculture workboats put into use in China are trying various deep water intake methods. Among them, the method using a rigid water intake cantilever can achieve mechanized operation, with low labor intensity of personnel, reliable operation safety and high operation efficiency. When the water intake cantilever is lowered underwater for water intake operation, it needs to be effectively fixed to ensure reliable operation safety. Summary of the Invention

[0003] A water intake cantilever for a fishery aquaculture workboat and a using method thereof proposed by the present invention have simple principles, are easy to implement, safe and reliable, and help to improve the production efficiency of the aquaculture workboat; the present invention does not require major modification of the aquaculture workboat, which is particularly conducive to application and implementation on aquaculture workboats that are nearly completed or already in use.

[0004] The object of the present invention is to provide a water intake cantilever for a marine fishery aquaculture workboat. The water intake cantilever is of a truss structure, and anti-friction rollers and electromagnetic chucks are arranged on the water intake cantilever;

[0005] A rolling pair is formed between the anti-friction rollers and the outer plate of the ship's side of the hull. The anti-friction rollers are used to abut against the outer plate of the ship's side of the hull, and the anti-friction rollers are used to prevent the water intake cantilever or the electromagnetic chucks from colliding with or rubbing against the outer plate of the ship when being lowered or lifted;

[0006] The electromagnetic chucks are used to suck the outer plate of the ship's side of the hull to prevent the water intake cantilever from swinging when the water intake cantilever reaches the water intake target depth;

[0007] The anti-friction rollers and the electromagnetic chucks are arranged on one side of the water intake cantilever close to the outer plate of the ship;

[0008] In order to solve the problems existing in the deep water intake operation of marine fishery aquaculture workboats, such as easy swinging of the water intake cantilever, friction and collision with the hull, and unreliable fixation, a water intake cantilever with a truss-type rigid structure is adopted, and a combined structure of anti-friction rollers and electromagnetic chucks is arranged on one side thereof close to the outer plate of the ship, which overcomes the defects of structural wear or interference of the traditional rigid cantilever on the hull during the lowering or lifting process, and at the same time avoids the problems of cantilever deviation and reduced water intake accuracy caused by waves or operation jitter, achieving the technical effects of stable structure, high safety, simple maintenance and being applicable to existing workboats;

[0009] In this application, a rolling pair is formed by setting anti-friction rollers to guide the water intake cantilever to be lowered smoothly and avoid direct contact and friction with the outer plate of the ship's side. When the cantilever reaches the predetermined water intake depth, the electromagnetic chuck adsorbs the outer plate of the ship's hull to firmly position the cantilever and effectively limit lateral swing. Through the height difference between the electromagnetic chuck and the rollers, it is ensured that there is a gap between the chuck and the hull in the non-working state to avoid ineffective wear. A reset device with a spring is adopted, enabling the water intake cantilever to generate relative displacement under pressure and having an anti-vibration function at the same time, improving the overall operation reliability. Combining the lifting device with the retractable cable, the mechanized lifting operation of the cantilever is realized, reducing the manual intensity and improving the operation efficiency.

[0010] This technical solution takes into account the adaptability of new equipment and the compatibility with existing aquaculture workboats, and can be installed and used without large-scale modification, having significant promotion and application value.

[0011] A technical solution provided by this application also has the following technical features:

[0012] Preferably, in an embodiment of this application, the height of the electromagnetic chuck is lower than that of the anti-friction rollers, so that there is a gap between the electromagnetic chuck and the outer plate of the ship's hull, and the electromagnetic chuck does not come into contact with and rub against the hull when the water intake cantilever is lowered or lifted.

[0013] Preferably, in an embodiment of this application, a convex or concave structure is provided on the working surface of the electromagnetic chuck, and a locking track is provided on the supporting hull. The locking track is arranged on the side of the hull along the moving track of the electromagnetic chuck and is fixed to the ship's deck at the upper end. The convex or concave structure on the working surface of the electromagnetic chuck forms a lock by fitting with the convex or concave structure of the locking track, providing a reliable stopping force for the ultra-deep water intake cantilever, and the target water intake depth of the ultra-deep water intake cantilever is greater than 30 meters.

[0014] Preferably, in an embodiment of this application, the cable of the electromagnetic chuck is laid in the cable duct on the water intake cantilever.

[0015] Preferably, in an embodiment of this application, the water intake cantilever is rigid.

[0016] Preferably, in an embodiment of this application, a reset device and a moving pair are provided between the anti-friction rollers and the water intake cantilever.

[0017] Preferably, in an embodiment of this application, a reset device is provided on the base of the anti-friction rollers, and the reset device includes a spring.

[0018] Preferably, in an embodiment of this application, a pump is provided at one end of the water intake cantilever for entering the sea water. The pump is connected to the water intake pipe through a pipeline, the output end of the water intake pipe is connected to the aquaculture tank, and bearings are provided on the water intake pipe to support the rotation of the water intake pipe along with the water intake cantilever.

[0019] Preferably, in one embodiment of the present application, the water intake boom is equipped with a retractable rope and a lifting device, and the lifting device drives the water intake boom to be lifted or lowered through the retractable rope.

[0020] Preferably, in one embodiment of the present application, a wave-breaking structure is provided at the water entry section and above the water entry section of the water intake cantilever. The wave-breaking structure includes a protrusion and a diversion curved surface and is arranged around the water intake cantilever to reduce the impact of floating waves on the water intake cantilever and the impact of undercurrents under the sea surface. This structure reduces the stress on the water intake cantilever, reduces the load required for the electromagnetic suction cup, and reduces its design load by 30%.

[0021] Preferably, in one embodiment of the present application, a method for using a water intake cantilever of a marine fishery aquaculture vessel is provided. When the water intake cantilever is lowered, the water intake cantilever moves downward under the guidance of an anti-friction roller, and the electromagnetic suction cup does not move, and maintains a certain gap with the outer plate of the hull; when the water intake cantilever reaches the target water intake depth, the electromagnetic suction cup performs an adsorption action, and an electromagnetic suction force is generated between the electromagnetic suction cup and the outer plate of the hull side;

[0022] A reset device and a moving pair are arranged between the anti-friction roller and the water intake cantilever, so that after the anti-friction roller is pressed by the water intake cantilever, the water intake cantilever overcomes the resistance of the reset device and moves relative to the anti-friction roller; when the anti-friction roller is not pressed by the water intake cantilever, the water intake cantilever and the anti-friction roller remain in the initial position, and the reset device is used to resist the vibration of the water intake cantilever.

[0023] Preferably, in one embodiment of the present application, the electromagnetic suction cup performs an adsorption action, the electromagnetic suction cup drives the water intake cantilever to press the anti-friction roller, the gap between the electromagnetic suction cup and the hull outer plate is reduced to contact the hull outer plate, the water intake cantilever is fixed, and the water intake operation is performed at the water intake target depth;

[0024] When retrieving the water intake cantilever, the electromagnetic suction cup is powered off, the electromagnetic suction force disappears, the water intake cantilever is reset under the drive of the spring, the gap between the electromagnetic suction cup and the hull outer plate is restored, and the water intake cantilever moves to the initial position under the guidance of the anti-friction roller.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention.

[0026] 1. This application overcomes the defect of direct collision or friction between the water intake boom and the hull outer plate during the lifting process by setting anti-friction rollers, thereby achieving the technical effect of protecting the hull structure and extending the service life of the equipment;

[0027] 2. This application overcomes the defect that the traditional cantilever is prone to lateral swing due to waves or hull shaking by setting an electromagnetic suction cup and realizing automatic adsorption and fixation when the cantilever reaches the water intake depth, thus achieving a stable and reliable technical effect of water intake operation;

[0028] 3. By setting a height difference between the electromagnetic chuck and the anti-abrasion roller in this application, a gap is maintained in the non-working state, overcoming the problem of continuous contact and friction between the electromagnetic chuck and the hull during the lifting and lowering process, and achieving the technical effects of reducing structural wear and improving reliability.

[0029] 4. By setting a reset device between the anti-abrasion roller and the water intake cantilever in this application, the problem of lack of flexible buffering in traditional rigid connections is overcome, and the technical effects of enhancing the anti-vibration ability and the self-resetting ability of the device are achieved.

[0030] 5. By setting a retractable cable and a lifting device in this application, the mechanized lifting and lowering of the water intake cantilever is realized, overcoming the defects of large manual operation intensity and low efficiency, and achieving the technical effects of improving the degree of automation and safety of the operation.

[0031] The structure design of this application has strong adaptability, and there is no need for major modification of the existing aquaculture workboat, overcoming the limitation of the narrow application range of traditional fixed structures, and achieving the technical effects of being convenient for popularization and application and having strong economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0033] Figure 1 A side view of the hull with the water intake cantilever provided according to an embodiment of the present invention, where the water intake cantilever is in the deck storage position;

[0034] Figure 2 A side view of the hull with the water intake cantilever provided according to an embodiment of the present invention, where the water intake cantilever is in a partially lowered position;

[0035] Figure 3 A side view of the hull with the water intake cantilever provided according to an embodiment of the present invention, where the water intake cantilever is in the fully lowered position;

[0036] Figure 4 A top view of the hull with the water intake cantilever provided according to an embodiment of the present invention;

[0037] Figure 5 An enlarged view A of the anti-abrasion roller and the electromagnetic chuck provided according to an embodiment of the present invention;

[0038] Elements in the figure:

[0039] 1. Water intake cantilever

[0040] 2. Anti-abrasion roller

[0041] 3. Electromagnetic chuck

[0042] 4. Spring

[0043] 5. Roller track

[0044] 6. Cable Reel

[0045] 7. Ship's Side

[0046] 8. Water Intake Pipe

[0047] 9. Bearing

[0048] 10. Outer Plate of Ship's Side

[0049] 11. Ship Hull. Detailed Implementation Modes

[0050] The following further elaborates on the detailed implementation modes of this application in conjunction with the accompanying drawings. These implementation modes are only used to illustrate this application and are not intended to limit the present invention.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0054] As Figures 1-5 , a water intake cantilever of an ocean fishery breeding workboat, the water intake cantilever 1 is of a truss structure, and anti-friction rollers 2 and electromagnetic chucks 3 are arranged on the water intake cantilever 1;

[0055] A rolling pair is formed between the water intake cantilever 1 and the outer plate 10 of the ship's side through the anti-friction rollers 2. The anti-friction rollers 2 are used to abut against the outer plate 10 of the ship's side, and the anti-friction rollers 2 are used to prevent the water intake cantilever 1 or the electromagnetic chuck 3 from colliding or rubbing against the outer plate of the ship when being lowered or lifted;

[0056] The electromagnetic chuck 3 is used to hold the outer plate 10 of the ship's hull side, preventing the water intake cantilever 1 from swinging when it reaches the target water intake depth.

[0057] The anti-scratch roller 2 and the electromagnetic chuck 3 are arranged on the side of the water intake cantilever 1 close to the ship's outer plate.

[0058] When the present application is implemented, the implementation key points are as follows:

[0059] Structural form: The water intake cantilever 1 adopts a truss rigid structure, with good strength and stiffness, suitable for stable operation in complex offshore environments.

[0060] Setting of the anti-scratch roller 2: The anti-scratch roller 2 is arranged on the side of the water intake cantilever 1 close to the outer plate 10 of the ship's hull side to form a rolling pair, which is used to guide the contact with the hull during the lifting and lowering process of the cantilever, avoiding direct collision or friction.

[0061] Configuration of the electromagnetic chuck 3: The electromagnetic chuck 3 is arranged on the same side. After the cantilever is lowered to the target depth, the adsorption function is started to fix the cantilever to the outer plate 10 of the ship's hull side, preventing the cantilever from swinging due to waves or vibrations.

[0062] Cooperative working mechanism: The anti-scratch roller 2 and the electromagnetic chuck 3 cooperate with each other, respectively playing the roles of guiding protection and operation positioning during the lifting and lowering process of the cantilever, improving the smoothness and safety of the water intake operation.

[0063] The above components are all arranged on the side of the water intake cantilever 1 close to the ship's outer plate, with a compact structure, facilitating installation and maintenance, and at the same time making the most of the ship's space; the structure of the present application has good protection and positioning stability, facilitating the automation and high-reliability operation of deep seawater intake operations.

[0064] The working principle of this embodiment is as follows:

[0065] During the deep water intake operation, the water intake cantilever 1 is gradually lowered along the direction of the outer plate 10 of the ship's hull side under the drive of the lifting device and the winch cable; during the lowering process, the anti-scratch roller 2 arranged on the side of the water intake cantilever 1 close to the hull contacts the outer plate 10 of the hull side to form a rolling pair structure, guiding the cantilever to move smoothly, avoiding direct collision or scratching with the hull, and playing a role of protection and buffering.

[0066] When the water intake cantilever 1 reaches the predetermined water intake depth, the electromagnetic chuck 3 starts to work with power on, adsorbing on the outer plate 10 of the ship's hull side, using electromagnetic suction to position and fix the cantilever, preventing it from swinging or shifting due to factors such as sea condition fluctuations and hull vibrations, thereby ensuring the stability and safety of the water intake operation.

[0067] After the water intake operation is completed, the electromagnetic chuck 3 is powered off, and the suction force disappears. The cantilever automatically rebounds under the action of a reset device, such as a spring, and restores the gap with the hull. Subsequently, the cantilever is lifted by the retractable cable, and the anti-friction roller 2 guides it to move upward again. Finally, the water intake cantilever 1 is retracted to the initial position, completing the entire operation cycle.

[0068] It realizes the automatic guiding, anti-collision, reliable positioning and self-resetting of the water intake cantilever during the lifting process, ensuring the efficient and safe operation of deep water intake.

[0069] Specifically, in an embodiment of the present application, the height of the electromagnetic chuck 3 is lower than that of the anti-friction roller 2, so that there is a gap between the electromagnetic chuck 3 and the outer plate of the hull side. When the water intake cantilever 1 is lowered or lifted, the electromagnetic chuck 3 does not contact and rub against the hull. The cable of the electromagnetic chuck 3 is laid in the cable duct on the water intake cantilever 1. The water intake cantilever 1 is rigid. A reset device and a moving pair are provided between the anti-friction roller 2 and the water intake cantilever 1. A reset device is provided on the base of the anti-friction roller 2, and the reset device includes a spring 4. A pump is provided at one end of the water intake cantilever 1 for entering the sea water. The pump is connected to the water intake pipe 8 through a pipeline. The output end of the water intake pipe 8 is connected to the aquaculture tank, and a bearing 9 is provided on the water intake pipe 8 to support the rotation of the water intake pipe 8 with the water intake cantilever 1. The water intake cantilever 1 is equipped with a retractable cable 6 and a lifting device, and the lifting device drives the water intake cantilever 1 to lift or lower through the retractable cable 6.

[0070] The anti-friction roller and the reset device adopt a combination of sliding fit and pre-tightening spring adjustment to adapt to different hull outer plate curvatures and structural deviations, ensuring that the roller always maintains flexible contact with the hull. The electromagnetic chuck remains suspended before being powered on, and the adsorption timing is precisely controlled by the control system. The adsorption action is only started after the cantilever is stably in place, avoiding uneven structural stress caused by mis-adsorption or premature adsorption. Waterproof and sealed joints and anti-corrosion sheaths are used during the cable laying process to improve the weather resistance and safety of long-term operation at sea. A synchronous control logic is adopted between the lifting device and the retractable cable, and a displacement sensor is used to achieve precise monitoring and feedback of the lowering position of the cantilever, ensuring that the cantilever quickly enters a stable working state when reaching the water intake depth, effectively improving the automation level of the system and the continuity and safety of the water intake operation.

[0071] Specifically, in an embodiment of the present application, a method for using the water intake cantilever of an ocean fishery aquaculture workboat. When lowering the water intake cantilever 1, the water intake cantilever 1 moves downward under the guidance of the anti-friction roller 2, and the electromagnetic chuck 3 does not act, maintaining a certain gap with the hull outer plate. When the water intake cantilever 1 reaches the water intake target depth, the electromagnetic chuck 3 performs an adsorption action, and an electromagnetic suction force is generated between the electromagnetic chuck 3 and the outer plate 10 of the hull side.

[0072] A reset device and a moving pair are arranged between the anti-friction roller 2 and the water intake cantilever 1. After the anti-friction roller 2 is pressed by the water intake cantilever 1, the water intake cantilever 1 moves relative to the anti-friction roller 2 against the resistance of the reset device. When the anti-friction roller 2 is not pressed by the water intake cantilever 1, the water intake cantilever 1 and the anti-friction roller 2 remain in the initial position, and the reset device is used to resist the vibration of the water intake cantilever 1.

[0073] The electromagnetic chuck 3 performs an adsorption action. The electromagnetic chuck 3 drives the water intake cantilever 1 to press the anti-friction roller 2. The gap between the electromagnetic chuck 3 and the outer hull plate is reduced to touch the outer hull plate, fixing the water intake cantilever 1, and water intake operation is performed at the target water intake depth.

[0074] When recovering the water intake cantilever 1, the electromagnetic chuck 3 is powered off, the electromagnetic suction force disappears, the water intake cantilever 1 is reset under the drive of the spring 4, the gap between the electromagnetic chuck 3 and the outer hull plate is restored, and the water intake cantilever 1 moves to the initial position under the guidance of the anti-friction roller 2.

[0075] The technical solution of the present application is to solve the problems existing in the existing marine fishery breeding workboat during deep water intake, such as easy swing of the cantilever, inaccurate positioning, and poor operation safety. By adopting the method of guiding with anti-friction rollers and adsorbing and fixing with electromagnetic chucks, the flexible limit and stable fixation of the cantilever are realized through the linkage structure of the reset device and the moving pair, overcoming the defects of the traditional rigid positioning structure being vulnerable to sea conditions interference and the adsorption positioning being unable to buffer, and achieving the technical effects of stable operation during the lowering process of the water intake cantilever, reliable positioning of the water intake depth, effective vibration suppression, and high operation safety.

[0076] Specifically, in an embodiment of the present application, a convex or concave structure is arranged on the working surface of the electromagnetic chuck, and a locking track is arranged on the supporting hull. The locking track is arranged on the side of the hull along the moving track of the electromagnetic chuck and is fixed to the hull deck at the upper end; the convex or concave structure on the working surface of the electromagnetic chuck forms a lock with the convex or concave structure of the locking track, providing a reliable stopping force for the ultra-deep water intake cantilever, and the target water intake depth of the ultra-deep water intake cantilever is greater than 30 meters; the fitting structure of the electromagnetic chuck and the locking track is distributed in the form of staggered teeth, that is, they can fit by staggering one tooth.

[0077] Specifically, in an embodiment of the present application, as Figures 1-5 , the technical solution of the present application relates to the water intake cantilever 1, anti-friction roller 2, electromagnetic chuck 3, spring 4, roller track 5, winch cable 6, hull side 7, water intake pipe 8, bearing 9, outer hull plate of the hull side 10, hull 11; the anti-friction roller 2 and the electromagnetic chuck 3 are installed on the truss-structured water intake cantilever 1; the anti-friction roller 2 is used to prevent the water intake cantilever 1 or the electromagnetic chuck 3 from colliding or rubbing against the outer hull plate during lowering or lifting; the electromagnetic chuck 3 is used to suck the outer hull plate when the water intake cantilever 1 reaches the water intake depth, preventing the anti-friction roller 2 from swinging.

[0078] The anti - friction roller 2 and the electromagnetic chuck 3 are adjacently installed on the truss structure on one side of the water intake cantilever 1 close to the outer hull of the ship; a spring 4 is arranged on the base of the anti - friction roller 2; the installation height of the electromagnetic chuck 3 is lower than that of the anti - friction roller 2, so that there is a certain gap between the electromagnetic chuck 3 and the outer hull of the ship, and the electromagnetic chuck 3 does not contact and rub against the hull when the water intake cantilever 1 is lowered or lifted; the cable of the electromagnetic chuck 3 is laid in the cable duct on the water intake cantilever.

[0079] When the water intake cantilever 1 is lowered, the hoisting equipment on the workboat pays out the winch cable. The water intake cantilever 1 walks downward under the guidance of the anti - friction roller 2. The electromagnetic chuck 3 does not perform the adsorption action, that is, the electromagnetic chuck 3 is not powered on, and there is a certain gap from the outer hull of the ship. When the water intake cantilever 1 reaches the water intake depth, the electromagnetic chuck 3 is powered on to perform the adsorption action and generates an electromagnetic suction force with the outer hull of the ship, pressing the anti - friction roller 2 to retract. The gap between the electromagnetic chuck and the outer hull of the ship decreases and finally adsorbs the outer hull of the ship, fixing the water intake cantilever 1 on the hull, and then the water intake operation starts. After the water intake operation is completed, when the water intake cantilever 1 is recovered, the electromagnetic chuck 3 is powered off, the electromagnetic suction force disappears, the anti - friction roller 2 returns to its original position under the action of the spring 4, the gap between the electromagnetic chuck 3 and the outer hull of the ship is restored, the hoisting equipment on the workboat retrieves the winch cable, and the water intake cantilever 1 walks upward under the guidance of the anti - friction roller 2 and is retrieved to the deck storage position.

[0080] The present invention is applicable to the method of using the water intake cantilever 1 on an aquaculture workboat to achieve deep - layer water intake. The water intake cantilever 1 generally uses a truss structure to combine a water intake pipe, a cable duct, a water intake suction port or a water intake pump, etc. into a rigid boom. When in use, the whole water intake cantilever 1 is lowered underwater. The present invention is composed of an anti - friction roller 2 and an electromagnetic chuck 3. The anti - friction roller 2 and the electromagnetic chuck 3 are installed on one side of the water intake cantilever 1 close to the hull. When the water intake cantilever 1 is lowered, the anti - friction roller 2 is used to prevent the electromagnetic chuck 3 and the water intake cantilever 1 from colliding and rubbing against the outer hull of the ship. When the water intake cantilever 1 is lowered to the water intake depth, the electromagnetic chuck 3 is powered on and adsorbed on the outer hull of the ship, so that the water intake cantilever 1 does not swing. After the water intake is completed, the electromagnetic chuck 3 is powered off and detached from the outer hull of the ship, and the water intake cantilever 1 is retrieved under the guidance of the anti - friction roller 2. When the method proposed by the present invention is implemented, only components need to be installed on the water intake cantilever 1, without major modification of the aquaculture workboat, and it can be conveniently applied and implemented for both the under - construction aquaculture workboat and the already - put - into - use aquaculture workboat.

[0081] The structure of the present invention is compact, the installation is simple, and the use is convenient. When used on a fishing and aquaculture workboat, it can improve the safety and reliability of the water intake operation. The present invention is applicable to the deep water intake mode of an aquaculture workboat using a rigid water intake cantilever 1. When in use, an electromagnetic chuck 3 is installed on the rigid water intake cantilever 1. Using the principle of electromagnetic adsorption, during the water intake operation, the water intake cantilever 1 is firmly adsorbed on the outer hull plate of the ship. The installation positions of the anti-friction rollers 2 and the electromagnetic chuck 3 on the water intake cantilever 1 should be appropriately selected so that within the entire walking range of the water intake cantilever 1, the anti-friction rollers 2 and the electromagnetic chuck 3 are both in the flat area of the outer hull plate of the ship, ensuring that the anti-friction rollers 2 are always in effective contact with the outer hull plate of the ship, and the electromagnetic chuck 3 can be firmly adsorbed to the outer hull plate of the ship.

[0082] Specifically, in an embodiment of the present application, components such as a submersible pump, a water intake pipe, a hull connecting pipe, and a cable pipe are combined and installed on the rigid water intake cantilever 1. The water intake cantilever 1 is arranged along the ship length direction on both sides of the hull of the aquaculture workboat. The "L"-shaped connecting pipe at the upper part of the water intake cantilever 1 is connected to the water inlet pipeline of the workboat through a bearing. The water intake cantilever 1 can rotate around the bearing, and the water intake cantilever 1 is operated by the lifting equipment on the workboat through the retraction and release of the cable.

[0083] Specifically, in an embodiment of the present application, the installation positions and installation heights of the anti-friction rollers 2 and the electromagnetic chuck 3 on the water intake cantilever 1 are appropriately designed according to the arrangement position of the water intake cantilever 1, so that the anti-friction rollers 2 and the electromagnetic chuck 3 are both in the flat area of the outer hull plate of the ship and are in effective contact with the outer hull plate of the ship;

[0084] When in use, an electromagnetic chuck 3 is installed on the rigid water intake cantilever 1. Using the principle of electromagnetic adsorption, during the water intake operation, the water intake cantilever 1 is firmly adsorbed on the outer hull plate of the ship, avoiding the swinging or offset of the water intake cantilever 1 due to external forces such as ocean currents and waves. In severe cases, it may cause damage to the water intake cantilever 1, and it can also keep the water suction port of the water intake cantilever 1 in the normal position all the time;

[0085] The electromagnetic chuck 3 and the anti-friction rollers 2 cooperate with each other. When the water intake cantilever 1 is walking, the electromagnetic chuck 3 is not energized and keeps a gap with the outer hull plate of the ship. The water intake cantilever 1 smoothly walks on the outer hull plate of the ship under the guidance of the anti-friction rollers 2. After the water intake cantilever 1 reaches the water suction position, the electromagnetic chuck 3 is energized, generating an electromagnetic suction force with the outer hull plate of the ship, pressing the anti-friction rollers 2 to retract, so that the electromagnetic chuck 3 contacts and firmly adsorbs to the outer hull plate of the ship. The installation positions and installation heights of the anti-friction rollers 2 and the electromagnetic chuck 3 should be appropriately designed according to the arrangement position of the water intake cantilever 1, so that the anti-friction rollers 2 and the electromagnetic chuck 3 are always in the flat area of the outer hull plate of the ship and are in effective contact with the outer hull plate of the ship.

[0086] Specifically, in an embodiment of the present application, during use, the specifications and quantities of the anti-friction rollers 2 and electromagnetic chucks 3 can be selected according to the size and force-bearing level of the water intake cantilever 1, and they can be installed at appropriate positions on the water intake cantilever 1.

[0087] Specifically, in an embodiment of the present application, taking the rotary rigid water intake cantilever 1 as an example, for other types of water intake cantilevers 1, by taking appropriate measures, the method proposed by the present invention can also be used; during implementation, only components need to be installed on the water intake cantilever 1, without major modification to the aquaculture workboat. Therefore, when implementing the present invention on a newly built aquaculture workboat, there is no need to modify the design and rework, and when implementing the present invention on an in-service aquaculture workboat, there is no need to stop work and return to the factory for modification. It has a simple principle, is easy to implement, safe and reliable, can be applied to various aquaculture workboats, and has broad application prospects.

[0088] Generally speaking, the present invention aims to solve the technical problems existing in the deep water intake process of existing marine fishery aquaculture workboats, such as the easy swing of the water intake cantilever, the easy collision and friction with the hull during the operation process, and the unreliable fixing method. A water intake cantilever with a reasonable structure, safety and stability, and strong adaptability and its use method are proposed; by adopting a truss rigid structure, setting a cooperative positioning device of anti-friction rollers and electromagnetic chucks, and cooperating with a reset device and a lifting mechanism, the stability and automation degree of the water intake operation are effectively improved, the hull loss and the operation risk of personnel are reduced, and the deep clean seawater intake capacity and operation reliability of the aquaculture workboat are significantly enhanced.

[0089] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. An intake cantilever for a marine fishery culture workboat, characterized in that, The water intake cantilever (1) is of truss structure, and anti-friction rollers (2) and electromagnetic chucks (3) are arranged on the water intake cantilever (1); A rolling pair is formed between the water intake cantilever (1) and the outer plate of the ship's side (10) through the anti-friction rollers (2). The anti-friction rollers (2) are used to abut against the outer plate of the ship's side (10), and the anti-friction rollers (2) are used to prevent the water intake cantilever (1) or the electromagnetic chuck (3) from colliding or rubbing against the outer plate of the ship when being lowered or lifted; The electromagnetic chuck (3) is used to hold the outer plate of the ship's side (10), so as to prevent the water intake cantilever (1) from swinging when the water intake cantilever (1) reaches the target water intake depth; The anti-friction rollers (2) and the electromagnetic chucks (3) are arranged on one side of the water intake cantilever (1) close to the outer plate of the ship.

2. The water intake cantilever of an ocean fishery aquaculture workboat according to claim 1, wherein The height of the electromagnetic chuck (3) is lower than that of the anti-friction rollers (2), so that a gap is maintained between the electromagnetic chuck (3) and the outer plate of the ship's side (10); when the water intake cantilever (1) is lowered or lifted, the electromagnetic chuck (3) does not contact and rub against the hull.

3. The water intake cantilever of an ocean fishery aquaculture workboat according to claim 2, characterized in that, The cable of the electromagnetic chuck (3) is laid in the cable duct on the water intake cantilever (1).

4. The water intake cantilever of an ocean fishery breeding workboat as described in claim 1, characterized in that, The water intake cantilever (1) is rigid.

5. The water intake cantilever of an ocean fishery breeding workboat as claimed in claim 1, characterized in that, A reset device and a moving pair are arranged between the anti-friction roller (2) and the water intake cantilever (1).

6. The water intake cantilever of an ocean fishery breeding workboat as described in claim 5, characterized in that, A reset device is arranged on the base of the anti-friction roller (2), and the reset device includes a spring (4).

7. The water intake cantilever of an ocean fishery aquaculture workboat as described in claim 1, characterized in that, A pump is arranged at one end of the water intake cantilever (1) for entering seawater. The pump is connected to the water intake pipe (8) through a pipeline. The output end of the water intake pipe (8) is connected to the aquaculture tank, and a bearing (9) is arranged on the water intake pipe (8) to support the rotation of the water intake pipe (8) along with the water intake cantilever (1).

8. The water intake cantilever of an ocean fishery breeding workboat as described in claim 7, characterized in that, The water intake cantilever (1) is equipped with a winch cable (6) and a lifting device, and the lifting device drives the water intake cantilever (1) to lift or lower through the winch cable (6).

9. A method for using the water intake cantilever of an ocean fishery breeding workboat, which uses the water intake cantilever of the ocean fishery breeding workboat described in any one of claims 1-8, characterized in that, When the water intake cantilever (1) is lowered, the water intake cantilever (1) moves downward under the guidance of the anti-friction rollers (2), the electromagnetic chuck (3) does not act, and a certain gap is maintained with the outer plate of the ship; when the water intake cantilever (1) reaches the target water intake depth, the electromagnetic chuck (3) performs an adsorption action, and an electromagnetic suction force is generated between the electromagnetic chuck (3) and the outer plate of the ship's side (10); A reset device and a moving pair are arranged between the anti-friction roller (2) and the water intake cantilever (1), so that after the anti-friction roller (2) is pressed by the water intake cantilever (1), the water intake cantilever (1) moves relative to the anti-friction roller (2) against the resistance of the reset device; when the anti-friction roller (2) is not pressed by the water intake cantilever (1), the water intake cantilever (1) and the anti-friction roller (2) remain in the initial position, and the reset device is used to resist the vibration of the water intake cantilever (1).

10. The use method of a water intake cantilever of an ocean fishery breeding workboat as described in claim 9, characterized in that, The electromagnetic chuck (3) performs an adsorption action, the electromagnetic chuck (3) drives the water intake cantilever (1) to press the anti-friction roller (2), the gap between the electromagnetic chuck (3) and the outer plate of the ship is reduced to abut against the outer plate of the ship, and the water intake cantilever (1) is fixed to perform water intake operation at the target water intake depth; When the water intake cantilever (1) is recovered, the electromagnetic chuck (3) is powered off, the electromagnetic suction force disappears, the water intake cantilever (1) is reset under the drive of the spring (4), the gap between the electromagnetic chuck (3) and the outer plate of the ship is restored, and the water intake cantilever (1) moves to the initial position under the guidance of the anti-friction roller (2).

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