Marine ranching fishing apparatus

Abstract

The present application relates to the technical field of fishing equipment, and discloses a fishing equipment for ocean ranching, which comprises a screening piece for screening fish according to size, a fixing piece arranged on the screening piece, and a collecting piece arranged on the fixing piece for collecting screened fish, wherein the fixing piece can automatically release the fixation of the collecting piece when the collecting piece reaches a specified weight; in the present application, the weight triggering mechanism of the fixing piece is used to monitor the catch amount without manual operation, and when the fishing net bag reaches the specified weight, the fixing frame can be automatically driven to rotate and release the fixation, thereby realizing the linkage of "automatic collection-automatic shedding", reducing manual underwater operation, and through the design of the collecting piece, the opening rope and the locking ring, the fishing net bag can be automatically tightened after shedding, so that the catch is prevented from falling during lifting, and the opening rope is directly connected to the lifting device of the fishing boat, so that no additional fishing tool is needed, and the difficulty of deep-sea operation is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fishing equipment, in particular to a fishing equipment for a marine ranch. BACKGROUND

[0002] A marine ranch is a modern fishing model based on the principles of marine ecosystems, which restores and optimizes the marine environment through artificial intervention, and realizes the sustainable utilization of fishery resources. Its core lies in the construction of artificial reefs, the release of propagation, the restoration of seaweed fields, and the construction of habitats suitable for the growth and reproduction of marine organisms. At the same time, intelligent monitoring and ecological management are combined to form a "grazing" cultivation and ecological protection system. Marine ranching is a key link in the "nursing-utilization" closed loop of marine ranching. The core difference between it and traditional wild fishing is that it takes ecological carrying capacity as the premise, and realizes "catching large and leaving small, catching good and leaving suitable" by precisely controlling the timing, method and scale of fishing, while ensuring the sustainable regeneration of fishery resources and improving fishing efficiency and product value.

[0003] A marine ranching equipment is disclosed in Chinese Patent No. CN223168980U. The structure of the equipment includes a mobile platform, which is annular. The upper surface of the mobile platform is fixedly connected with a plurality of connection plates, which are annular and evenly distributed on the upper surface of the mobile platform. A winding roller is rotatably arranged on one side surface of each connection plate. A fishing net is fixedly connected with the same fishing net through a pull line passing through the mobile platform. The mobile platform is annular, and a plurality of annular connection plates are arranged on the mobile platform. The winding roller on the connection plate can be rotated to tighten the pull line and drive the fishing net to rise. The fishing net is located at the bottom of the mobile platform to facilitate the synchronous rising and falling of the fishing net cage. The equipment is also suitable for fishing operations at different depths.

[0004] However, the above-mentioned prior art has the following disadvantages: In actual operation, it is necessary to rely on artificial continuous observation of the accumulation state of the catch in the fishing net. On the one hand, it is necessary to invest in real-time monitoring by a dedicated person, which directly increases the labor cost and management energy consumption. On the other hand, artificial judgment has natural reaction delay and subjective error, which may lead to over-piling due to failure to timely detect that the catch is full, which may damage the quality of the catch or cause the fishing net to be overloaded. Or, the catch amount is misjudged, and the net is collected too early, resulting in low efficiency of single fishing, wasting operation time, and being difficult to accurately match the resource regeneration rhythm of the marine ranch, affecting the scientificity and rationality of the utilization of fishery resources. SUMMARY

[0005] In order to solve the problems of increasing the labor cost and management energy consumption by real-time monitoring, damaging the quality of fishery products, causing the overload of fishing nets, and low efficiency of single fishing during actual operation, the application provides a fishing equipment for marine ranching.

[0006] To achieve the above object, the application provides the following technical scheme: a fishing equipment for marine ranching, comprising: a screening member for screening fish by size, a fixing member arranged on the screening member, and a collecting member arranged on the fixing member for collecting screened fish, wherein the fixing member can automatically release the fixing of the collecting member when the collecting member reaches a specified weight.

[0007] The fixing member comprises a rotating rod fixedly connected with the screening member, a connecting plate rotatably connected with the rotating rod, a fixed frame fixedly connected with one end of the connecting plate, a closing rod rotatably connected with one end of the fixed frame, a mounting rod one fixedly connected with the inner side of the fixed frame, a mounting rod two fixedly connected with the inner side of the closing rod, a fixed block one rotatably connected with the mounting rod one, a fixed block two rotatably connected with the mounting rod two, and a limiting plate fixedly connected with the screening member and arranged below the rotating rod.

[0008] During installation, the fixed frame and the closing rod are kept closed, the collecting member is passed from the inner side of the fixed frame, the opening end of the collecting member is then folded on the outer side, then the fixed frame is rotated to synchronously rotate around the rotating rod until the closing rod is clamped with the screening member, at this time, the part of the collecting member folded on the fixed frame is clamped between the screening member and the fixed frame, the fixing is completed, and during work, the fish accumulated in the collecting member increases the gravity, and when the threshold value is reached, the clamping force is overcome, the fixed frame and the closing rod are driven to rotate downward around the rotating rod until the fixed frame abuts against the limiting plate below and is limited in rotation, at this time, the weight of the collecting member further acts on the mounting rods, the fixed blocks are driven to rotate around the corresponding mounting rods, so that the collecting member is detached from the inner side of the fixed frame.

[0009] As a further scheme of the application, the screening member comprises a swimming channel, a connecting screen plate is embedded at the side end of the swimming channel, a connecting block is fixedly connected with the inner side of the swimming channel, and a connecting member is arranged on the inner side of the connecting block.

[0010] As a further scheme of the application, the swimming channel and the connecting member are each provided with multiple groups, two groups of swimming channels are connected by one group of connecting blocks, and the connecting screen plates on the multiple groups of swimming channels gradually decrease in aperture from bottom to top.

[0011] As a further scheme of the application, the connecting member comprises a connecting cylinder threadedly connected with the inner side of the connecting block, a limiting block is fixedly connected with the outer side of the connecting cylinder, a screening plate is fixedly connected with the inner side of the connecting cylinder, and the screening plates on the multiple groups of connecting members gradually decrease in aperture from bottom to top.

[0012] As a further scheme of the present application: the movable channel is fixedly connected with a limiting plate outside, and the limiting plate is arranged at the side end of the connecting sieve plate.

[0013] As a further scheme of the present application: the clamping plate is arranged above the connecting sieve plate, a cavity is formed at the bottom end of the clamping plate, a clamping block is slidably inserted into the cavity, a spring is fixedly connected to the top end of the clamping block, and one end of the spring is fixedly connected to the top end of the cavity.

[0014] As a further scheme of the present application: a clamping groove is formed at one end of the closing rod, and the clamping groove is matched with the clamping block.

[0015] As a further scheme of the present application: the collecting piece comprises a fishing net bag, a thimble is fixedly connected to the opening of the fishing net bag, a closing rope is inserted into the thimble, a locking ring is fixedly connected to one end of the closing rope, and the other end of the closing rope penetrates through the locking ring and is connected with a lifting device of a fishing boat.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1、In the present application, through the plurality of groups of I-shaped distribution movable channels of the screening piece, the connecting sieve plate and the screening plate gradually decreasing in aperture from bottom to top are matched, the "large adult fish-middle adult fish-small adult fish-fry" step-by-step separation is realized, the fry that does not reach the commercial specification returns to the sea area from the topmost movable channel, the mis-catching of the fry is avoided, at the same time, by setting the mesh size of the fishing net bag to be smaller than the aperture of the topmost screening plate, it is ensured that the adult fish entering the net bag will not leak out, and a small number of mis-screened fry can return through the net, resource waste is reduced, in addition, through the screening logic of the fixed piece "catching large and leaving small" and the precise receiving of the collecting piece, the non-target species are avoided in the traditional catching, the interference to the marine ranching ecosystem is reduced, the sustainable fishery development demand is met, and long-term use can promote the natural proliferation of the ranching fishery resources.

[0018] 2、The weight triggering mechanism of the fixing part in the application does not need manual monitoring of the catch amount, when the fishing bag reaches the specified weight, the fixed frame can be automatically driven to rotate and be released, realizing the linkage of "automatic collection-automatic shedding", reducing manual underwater operation, through the cooperation of the clamping plate, the clamping block and the spring, the quick positioning and unlocking of the closed rod are realized, without complex locking structure, a person can complete the installation of the fixing part and the collection part, through the design of the closing rope and the locking ring of the collection part, the fishing bag can be automatically tightened after shedding, avoiding the catch from falling during lifting, and the closing rope is directly connected with the lifting device of the fishing boat, without the need for additional salvage tools, greatly reducing the difficulty of deep-sea operation, at the same time, through the detachable connecting sieve plate and the screening plate, during the later maintenance, the whole device does not need to be disassembled, only the old sieve plate needs to be replaced, reducing the maintenance time and cost, and improving the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic diagram of the application;

[0020] Figure 2 is the structure schematic diagram of the screening part in the application;

[0021] Figure 3 is the structure schematic diagram of the limiting plate in the application;

[0022] Figure 4 is the structure schematic diagram of the fixing part in the application; Figure 3 is the enlarged structure schematic diagram of A of

[0023] Figure 5 is the structure schematic diagram of the fixing part in the application;

[0024] Figure 6 is the expanded schematic diagram of the fixing part in the application;

[0025] Figure 7 is the structure schematic diagram of the fixed block one and the fixed block two in the application;

[0026] Figure 8 is the structure schematic diagram of the collection part in the application;

[0027] Figure 9 is the enlarged structure schematic diagram of B of Figure 8

[0028] ​In the figure: 1, screening piece; 11, moving channel; 12, connecting sieve plate; 13, connecting block; 14, connecting cylinder; 15, limiting block; 16, screening plate; 17, limiting plate; 18, clamping plate; 19, cavity; 110, clamping block; 111, spring; 112, clamping groove; 113, connecting piece; 2, fixing piece; 21, rotating rod; 22, connecting plate; 23, fixed frame; 24, closing rod; 25, mounting rod one; 26, mounting rod two; 27, fixed block one; 28, fixed block two; 29, limiting plate; 3, collecting piece; 31, fishing net bag; 32, sleeve ring; 33, closing rope; 34, locking ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0030] Referring to Figures 1-9 In the embodiments of the present application, the fishing equipment for marine ranching includes a screening piece 1 for screening fish according to size, a fixing piece 2 arranged on the screening piece 1, and a collecting piece 3 for collecting screened fish, wherein the fixing piece 2 can automatically release the fixing of the collecting piece 3 when the collecting piece 3 reaches a specified weight.

[0031] The screening piece 1 includes a plurality of groups of I-shaped distribution swimming channels 11, which realize the grading screening and directional flow guiding of fish. The swimming channel 11 is in the overall structure of a regular hexagonal column. Three groups of embedded clamping grooves are arranged on the inner wall of the side end of the swimming channel 11. One group of connecting screen plates 12 is clamped and fixed in each group of clamping grooves. The three groups of connecting screen plates 12 are uniformly distributed on the inner wall of the swimming channel 11. The edge of the screen hole of a single group of connecting screen plates 12 is rounded to avoid scratching the fish. A group of connecting blocks 13 is fixedly connected to the inner side of the swimming channel 11 at the distance from the two end ports. The connecting blocks 13 are two groups and are symmetrically distributed inside the upper and lower ends of the swimming channel 11. The connecting block 13 is a regular hexagonal block structure which is attached to the inner wall of the swimming channel 11. A threaded hole is arranged through the inside of the connecting block 13. The depth of the threaded hole is consistent with the thickness of the connecting block 13. A connecting piece 113 is arranged in the threaded hole of the connecting block 13. The connecting piece 113 is provided in multiple groups. Adjacent two groups of swimming channels 11 are fixedly connected through the connecting piece 113. Each group of connecting pieces 113 includes a connecting barrel 14, a limiting block 15 and a screening plate 16. The outer diameter of the connecting barrel 14 matches the inner diameter of the threaded hole of the connecting block 13. An external thread which is matched with the threaded hole is processed on the outside of the connecting barrel 14. The limiting block 15 is a regular hexagonal block structure which is integrally formed at the middle position of the connecting barrel 14. The limiting block 15 is used for limiting the depth of the connecting barrel 14 and preventing the rotation. The screening plate 16 is fixedly arranged on the inner side of the connecting barrel 14 through three groups of countersunk head bolts. The edge of the screen hole is also rounded. A plurality of groups of swimming channels 11 are arranged in the I-shaped distribution along the vertical direction. Adjacent two groups of swimming channels 11 are butt-jointed through a group of connecting blocks 13, that is, the connecting block 13 at the bottom of the upper swimming channel 11 is connected with the connecting block 13 at the top of the lower swimming channel 11 through the same group of connecting pieces 113. Meanwhile, the three groups of connecting screen plates 12 in the adjacent two groups of swimming channels 11 are staggered. At the same time, the connecting screen plates 12 on all the swimming channels 11 and the screening plates 16 on the multiple groups of connecting pieces 113 are designed according to the rule that the hole diameter gradually decreases from bottom to top. When the screening piece 1 is assembled, the lowermost swimming channel 11 is first fixed on the load-bearing support of the fishing equipment. Then the connecting barrel 14 of the connecting piece 113 is aligned with the threaded hole of the top connecting block 13 of the lowermost swimming channel 11. The connecting barrel 14 is screwed clockwise until the limiting block 15 is completely attached to the side surface of the connecting block 13. Subsequently, the connecting block 13 at the bottom of the upper swimming channel 11 is aligned with the other end of the connecting barrel 14. The connecting barrel 14 is continuously screwed until the upper and lower channels are butt-jointed without gaps. The I-shaped assembly of the multiple groups of swimming channels 11 is completed according to the above process. When the equipment is started and operated, the fish enters the lowermost swimming channel 11 along with the water flow of the pasture or the artificial flow guiding device. The fish swims upward due to the instinct of rheotaxis. The fish smaller than the hole diameter of the lowermost screening plate 16 leaks out from the screen hole and slides along the inner wall of the channel into the middle layer swimming channel 11. The fish entering the middle layer channel continues to swim upward. The individuals smaller than the hole diameter of the middle layer screening plate 16 leak out into the upper channel. In the upper channel, the young fish smaller than the hole diameter of the topmost screening plate 16 finally flows out from the top channel and returns to the marine pasture sea area. Meanwhile, the fish larger than the hole diameter of the corresponding screening plate 16 in each channel,Will swim along the channel to the side end connection screen plate 12, from the connection screen plate 12 into the appropriate collection 3, complete the classification and collection.

[0032] With the above scheme: through the three groups of evenly distributed connection screen plate 12 in each group of swimming channel 11, and the staggered layout of the connection screen plate 12 in the two groups of swimming channel 11 adjacent to each other in the vertical direction, the contact area of fish and screen plate is expanded, the screening efficiency caused by single screen plate blockage is avoided, through the design of multiple groups of I-shaped distribution of swimming channel 11 and gradually decreasing screen hole diameter from bottom to top, the ladder type separation of large fish-medium fish-small fish-fry is realized, which not only guarantees the fishing efficiency of commercial fish, but also can put the fry back to the sea, which meets the ecological conservation needs of marine ranching, the anti-rotation design of the thread connection of the connecting block 13 and the connecting piece 113 cooperates with the limiting block 15, which ensures the stability of the connection of multiple channels, and is convenient for quick disassembly and assembly, reduces the difficulty of equipment installation and transportation, through the detachable connection screen plate 12 and the screening plate 16, it is not only convenient for later maintenance and replacement, but also reduces the frequency of impurity adhesion and reduces the cleaning workload.

[0033] A group of fixed members 2 are arranged on one side of each of the three groups of connecting sieve plates 12 on each group of swimming channels 11, and the fixed members 2 comprise rotating rods 21 fixedly connected with the screening members 1, the rotating rods 21 are U-shaped structures made of stainless steel, and the two ends of the rotating rods 21 are fixedly connected with the outer side walls of the limiting blocks 15 through four groups of countersunk head bolts, the rotating rods 21 are rotatably connected with connecting plates 22, the connecting plates 22 are rectangular stainless steel plates, one end of the connecting plates 22 is rotatably connected with the middle rod body of the rotating rod 21 through a brass bearing, the inner ring of the bearing is in interference fit with the rotating rod 21, the outer ring is fixedly welded with the connecting plate 22, one end of the connecting plate 22 is fixedly connected with a fixed frame 23, the fixed frame 23 is also a U-shaped stainless steel frame, one side of the opening end of the fixed frame 23 is rotatably connected with a closing rod 24, the closing rod 24 is a rectangular stainless steel rod, and when closed, it can form a complete rectangular ring structure with the fixed frame 23, an installation rod one 25 is welded on the inner side wall of the fixed frame 23, the installation rod one 25 is composed of two groups of rectangular installation blocks and three groups of cylindrical fixing rods to form a U-shaped structure, the two groups of installation blocks are respectively welded on the inner walls of the fixed frame 23, among the three groups of fixing rods, two groups are parallelly welded on one side of the installation block facing the closing rod 24, and one group is transversely connected with the ends of the two parallel fixing rods, and the free ends of the two parallel fixing rods are respectively bonded with hemispherical rubber blocks for positioning and cooperating with the installation rod two 26, an installation rod two 26 is welded on the inner side wall of the closing rod 24, the installation rod two 26 is composed of two groups of rectangular installation blocks and one group of cylindrical fixing rods to form a straight structure, the two groups of installation blocks are respectively welded on the inner walls of the two ends of the closing rod 24, and the fixing rod is transversely welded between the two groups of installation blocks, and one side of the two groups of installation blocks facing the installation rod one 25 is provided with a circular groove matched with the hemispherical rubber block, and when closed, the rubber block can be embedded in the groove to realize the temporary positioning of the fixed frame 23 and the closing rod 24, an avoiding groove is formed at the inner opening of the fixed frame 23 to avoid the collision and interference between the installation blocks on the inner wall of the closing rod 24 and the inner wall of the fixed frame 23 when the closing rod 24 is rotated and closed, the fixing rods of the installation rod one 25 and the installation rod two 26 are respectively rotatably connected with fixed blocks one 27 and fixed blocks two 28 through nylon shaft sleeves, the cross sections of the two are drop-shaped, and when the collecting member 3 is fixed, the tips of the drop-shaped fixed blocks face the direction of the fish outlet of the swimming channel 11, the tips are matched with the inner walls of the fixed frame 23 and the closing rod 24 to form extrusion fixing on the opening end of the collecting member 3, so that no fish is leaked during collection, the limiting plate 29 is a rectangular stainless steel plate, which is fixedly connected with the outer side wall of the swimming channel 11 of the screening member 1 through bolts and is located directly below the rotating rod 21, and is used for limiting the maximum angle of downward overturning of the fixed frame 23 to avoid damage caused by excessive rotation when the collecting member 3 is separated, when the fixed member 2 and the collecting member 3 are installed, the closing rod 24 is first rotated to be closed with the fixed frame 23, the hemispherical rubber block is embedded in the groove of the installation rod two 26 to keep the closing state, then the opening end of the collecting member 3 is passed through the inside of the ring formed by the fixed frame 23 and the closing rod 24, then the opening end of the collecting member 3 is outwardly sleeved on the outside of the fixed frame 23 and the closing rod 24, then the fixed frame 23 is pushed with hands,The connecting plate 22 is driven to rotate upward around the rotating rod 21 until the end of the closing rod 24 is clamped with the preset clamping groove outside the swimming channel 11 of the screening element 1. At this time, the collection element 3 part wrapped on the fixed frame 23 is clamped between the channel wall of the screening element 1 and the fixed frame 23, and the tips of the fixed block one 27 and the fixed block two 28 are kept towards the swimming channel 11 under the tension of the collection element 3. The fixing of the collection element 3 is completed. When the device operates to collect fish, the fish screened through the connecting screen plate 12 continuously enters the collection element 3. With the accumulation of fish, the overall gravity of the collection element 3 gradually increases. When the gravity reaches the preset threshold, the collection element 3 drives the fixed frame 23 and the closing rod 24 to rotate downward around the rotating rod 21 until the bottom of the fixed frame 23 completely abuts the surface of the limiting plate 29. The rotation of the fixed frame 23 is limited. At this time, the weight of the collection element 3 is further transmitted to the mounting rod one 25 and the mounting rod two 26, which drives the fixed blocks on the mounting rods to rotate synchronously around the fixed rods in the mounting rods, so that the water droplet-shaped tips are away from the swimming channel 11. The extrusion of the fixed state is released, and the collection element 3 falls from the inside of the fixed frame 23 under the action of gravity.

[0034] By adopting the rotating rod 21 and the fixed frame 23 in the U-shaped structure, the rotation stability can be improved compared with the linear structure, and more suspension space is provided for the collection element 3 to avoid interference with the screening element 1 during the collection process. The cooperation of the hemispherical rubber block of the mounting rod one 25 and the groove of the mounting rod two 26 can realize temporary positioning when the fixed frame 23 and the closing rod 24 are closed, which facilitates the installation of the collection element 3 and reduces the operation difficulty. The avoidance groove design on the inside of the fixed frame 23 can effectively avoid the interference between the mounting block and the frame body when the closing rod 24 rotates, ensuring smooth closing action, reducing component wear, and improving the sealing performance of the fixed collection element 3 through the water droplet-shaped structure of the fixed block. When the collection element 3 is fixed, the tips can form precise extrusion, and when it is detached, it can automatically rotate to release the fixation without the need for additional power devices. The limiting plate 29 is arranged below the rotating rod 21, which can accurately limit the turning angle of the fixed frame 23 to avoid collision and damage of the collection element 3 when it is detached due to excessive rotation, and ensure the integrity of the catch.

[0035] The outer side of the swimming channel 11 is fixedly connected with a limiting plate 17. The limiting plate 17 is a rectangular thin plate made of stainless steel, and the surface is polished to avoid scratching the collecting piece 3. One set of limiting plates 17 is symmetrically arranged on each side of the connecting sieve plate 12, and is fixed to the outer side wall of the swimming channel 11 by spot welding. The inner edge of the limiting plate 17 is tangent to the maximum rotating radius of the fixed block. When the collecting piece 3 is fixed, the water-drop-shaped curved surface of the fixed block is in close contact with the inner side of the limiting plate 17, forming a physical barrier. Only when the fixed frame 23 is rotated downward to move out of the coverage area of the limiting plate 17, the fixed block can rotate freely. Each set of limiting plates 17 is arranged on the upper side of each set of connecting sieve plates 12 outside the swimming channel 11, and a set of clamping plates 18 is welded on each set of limiting plates 17. A plurality of cylindrical cavities 19 are evenly arranged at the bottom end of each clamping plate 18. A set of clamping blocks 110 are slidably inserted into each set of cavities 19. The clamping block 110 is integrally formed by a set of cylindrical rods and a set of hemispherical blocks. A spring 111 is welded at the top end of the clamping block 110. The spring 111 is a stainless steel compression spring 111. One end of the spring 111 is fixedly welded to the inner wall at the top end of the cavity 19. In the natural state, the spring 111 pushes the hemispherical block of the clamping block 110 to extend out of the bottom end of the cavity 19. When pressed, it can be completely retracted into the cavity 19. A plurality of clamping grooves 112 are evenly arranged at one end of the sealing rod 24 along the length direction of the rod. The clamping grooves 112 are semispherical grooves with the same spacing as the cavities 19, and the edge of the groove is rounded to reduce the friction resistance during clamping. When the fixing piece 2 and the collecting piece 3 are fixed, the fixed frame 23 is pushed to rotate upward around the rotating rod 21, driving the sealing rod 24 to move close to the clamping plate 18. As the rotating angle increases, the end of the sealing rod 24 gradually contacts the hemispherical block of the clamping block 110, extruding the spring 111 to retract the clamping block 110 into the cavity 19. Continue to rotate until the sealing rod 24 is in close contact with the outer side of the swimming channel 11. At this time, the clamping block 110 is ejected under the action of the spring 111 and is embedded in the corresponding clamping groove 112 of the sealing rod 24, completing the clamping positioning. At the same time, the curved surfaces of the fixed block one 27 and the fixed block two 28 are in close contact with the inner side of the limiting plate 17, which cannot be rotated due to the blocking of the limiting plate 17. The collecting piece 3 wrapped on the fixed frame 23 remains in a stable clamping state to avoid accidental falling off. When the weight of the fish in the collecting piece 3 reaches the set threshold, the gravity drives the fixed frame 23 and the sealing rod 24 to rotate downward. The clamping groove 112 of the sealing rod 24 extrudes the hemispherical block of the clamping block 110, overcomes the elastic force of the spring 111, and makes the clamping block 110 retract into the cavity 19 again. The clamping positioning is released. The fixed frame 23 continues to rotate downward until the bottom of the fixed frame 23 is in complete abutment with the limiting plate 29. At this time, the fixed block one 27 and the fixed block two 28 move downward synchronously with the fixed frame 23, moving out of the coverage area of the limiting plate 17. The weight of the collecting piece 3 further acts on the mounting rod one 25 and the mounting rod two 26, pushing the fixed block one 27 to rotate around the mounting rod one 25 and the fixed block two 28 to rotate around the mounting rod two 26. The water-drop-shaped tip faces away from the swimming channel 11, and the collecting piece 3 falls off from the inner side of the fixed frame 23.

[0036] With the above scheme: by symmetrically distributing the limiting plates 17 on the four sides of the connecting sieve plate 12 and adapting them to the rotation track of the fixed blocks, the rotation of the fixed block one 27 and the fixed block two 28 can be effectively blocked when the collecting piece 3 does not reach the weight threshold, avoiding the accidental falling of the collecting piece 3 due to wave impact or slight vibration, improving the operation stability, through the cooperation of the multiple cavities 19 at the bottom end of the clamping plate 18 and the clamping blocks 110 and the springs 111, the clamping positioning of the closing rod 24 can be realized, enhancing the versatility of the equipment, by adopting the cylinder + hemisphere block structure for the clamping block 110 and setting the clamping groove 112 as a hemisphere, the frictional resistance during clamping and disengaging can be reduced, avoiding the jamming of the parts, at the same time, the hemisphere-shaped matching surface can automatically correct the deviation, improving the clamping accuracy, through the continuous elastic force provided by the spring 111, the clamping block 110 can always maintain the state of being fitted with the clamping groove 112, even in the seawater shaking environment, the accidental loosening of the closing rod 24 can also be prevented, ensuring the fixing reliability, through the synergistic effect of the limiting plate 17 and the limiting plate 29, only when the fixed frame 23 abuts against the limiting plate 29, i.e. the collecting piece 3 reaches the weight threshold, the fixed blocks can disengage from the limitation and rotate, realizing the linkage control of weight triggering-precise falling, without the need for manual intervention, improving the degree of automation.

[0037] The collecting device 3 comprises a fishing net bag 31 made of high-strength nylon material, and the mesh size of the fishing net bag 31 is smaller than the screen hole of the screen plate 16 on the topmost swimming channel 11, which can prevent the fish in the net bag from escaping and ensure the normal flow of seawater, avoid the accumulation of water in the net bag causing the fish to lack oxygen, and the opening of the fishing net bag 31 is fixedly connected with a C-shaped sleeve ring 32 through double-line sewing and high-strength waterproof glue, and the sleeve ring 32 is made of food-grade engineering plastic and is integrally formed in a C-shaped edge with rounded corners to avoid scratching the net bag or the operator, and the inside of the sleeve ring 32 is slidably connected with a closing rope 33, the closing rope 33 passes through the reserved channel inside the sleeve ring 32, the closing rope 33 is a multi-strand polyester multifilament rope, one end of the closing rope 33 is fixedly connected with a locking ring 34 through a knot, the locking ring 34 is a ring-shaped structure made of stainless steel, the other end of the closing rope 33 passes through the reserved channel of the sleeve ring 32 and the locking ring 34 in sequence, and finally is connected with the electric lifting device of the fishing boat through a buckle to adapt to different water depth requirements, when the device is running to collect fish, the adult fish screened through the swimming channel 11 pass through the connecting screen plate 12 and continuously enter the fishing net bag 31, as the amount of fish increases, the overall gravity of the fishing net bag 31 gradually increases, when the gravity reaches a certain threshold, the fixed frame 23 and the closing rod 24 are driven to rotate downward around the rotating rod 21 until the fixed frame 23 abuts against the limiting plate 29, the fixed block one 27 and the fixed block two 28 are separated from the limiting plate 17 and rotate, and the fishing net bag 31 falls off from the inside of the fixed frame 23, when the fishing net bag 31 falls off, under the action of gravity, the closing rope 33 is pulled, and under the action of tension, the closing rope 33 slides along the locking ring 34 to automatically tighten the opening of the C-shaped sleeve ring 32 and the fishing net bag 31 to prevent the fish from falling out of the net bag, and then the closing rope 33 connected with the lifting device drags the fishing net bag 31 to move, during the movement, the closing rope 33 abuts against the closing rod 24 to push the closing rod 24 to rotate, so that the closing rope 33 moves out of the gap between the closing rod 24 and the fixed frame 23, then the fishing net bag 31 is lifted by the lifting device, when the fishing net bag 31 is lifted to the deck of the fishing boat, the lifting device is turned off, the opening of the locking ring 34 is opened, the closing rope 33 is loosened to restore the sleeve ring 32 to the open state, then the fish in the fishing net bag 31 is poured out, after cleaning the impurities on the surface, the next installation operation can be performed.

[0038] By setting the mesh size of the fishing net bag 31 to be smaller than the screen hole of the screen plate 16 on the topmost swimming channel 11, the adult fish entering the fishing net bag 31 can be accurately blocked from escaping, while allowing juvenile fish to return to the sea, balancing the needs of fish retention and ecological conservation, through the cooperation of the closing rope 33 and the locking ring 34, after the fishing net bag 31 falls off, the closing rope 33 is automatically pulled to tighten the opening of the net bag under the action of gravity, without the need for manual underwater operation, especially suitable for deep-sea fishing scenarios, reducing the difficulty and safety risk of operation.

[0039] The working principle of the present application is that: firstly, the lowermost layer of the movable channel 11 of the screening element 1 is fixed on the load-bearing support of the fishing device, a group of connecting elements 113 is taken, the connecting barrel 14 is aligned with the threaded hole of the connecting block 13 at the top of the lowermost layer of the movable channel 11, and is screwed clockwise until the limiting block 15 completely fits the side surface of the connecting block 13, then the connecting block 13 at the bottom of the upper layer of the movable channel 11 is aligned with the other end of the connecting barrel 14, and is screwed continuously until the upper and lower channels are butt-jointed without gaps, and the I-shaped assembly of multiple groups of movable channels 11 is completed in sequence according to the above process, then the closed rod 24 of the fixed frame 23 is rotated to the closed state, so that the hemispherical rubber block of the mounting rod one 25 is embedded in the groove of the mounting rod two 26 to realize temporary positioning, then the C-shaped sleeve ring 32 at the opening of the fishing net bag 31 is pried open and is sleeved from the inside to the outside of the annular gap between the fixed frame 23 and the closed rod 24, then the fixed frame 23 is pushed to drive the connecting plate 22 to rotate upwards around the rotating rod 21, the closed rod 24 gradually approaches the clamping plate 18, the end of the closed rod 24 extrudes the clamping block 110 to make the spring 111 contract, and the clamping block 110 retracts into the cavity 19, until the closed rod 24 fits the outside of the movable channel 11, at this time, the clamping block 110 is popped out under the elastic force of the spring 111 and is embedded in the clamping groove 112 of the closed rod 24 to complete positioning, at the same time, the arc surfaces of the fixed block one 27 and the fixed block two 28 fit the limiting plate 17, after the device is started, fish enters the lowermost layer of the movable channel 11 along with the water flow of the pasture or the artificial flow guiding device, and moves upwards due to the instinct of thigmotaxis, the fish smaller than the pore diameter of the lowermost layer of the screening plate 16 leaks out from the screen hole, slides along the inner wall of the channel into the middle layer of the movable channel 11, the fish entering the middle layer continues to move upwards, the individuals smaller than the pore diameter of the middle layer of the screening plate 16 leak out into the upper layer of the channel, in the upper layer of the channel, the juvenile fish smaller than the pore diameter of the topmost layer of the screening plate 16 flows out from the topmost layer of the channel and returns to the sea area, and the fish larger than the pore diameter of the corresponding screening plate 16 in each layer moves along the channel to the side end of the connecting screening plate 12, enters the corresponding fishing net bag 31, as the catch accumulates, the gravity of the fishing net bag 31 gradually increases, when reaching the preset threshold, the gravity drives the fixed frame 23 and the closed rod 24 to rotate downwards around the rotating rod 21, the clamping groove 112 of the closed rod 24 extrudes the clamping block 110 to retract into the cavity 19, the clamping positioning is released, the fixed frame 23 continues to rotate to the bottom and abuts against the limiting plate 29, the fixed block one 27 and the fixed block two 28 are separated from the limiting plate 17, and the fishing net bag 31 rotates around the corresponding mounting rod under the weight of the fishing net bag 31, the water drop-shaped tip of the fishing net bag 31 faces away from the movable channel 11, the extrusion of the fixed state is released, the fishing net bag 31 is detached, the detached fishing net bag 31 pulls the closing rope 33 under the action of gravity, the closing rope 33 slides along the locking ring 34, the C-shaped sleeve ring 32 and the bag opening are automatically tightened, and the falling of the catch is prevented, then the electric lifting device of the fishing boat is started, the net bag is lifted through the closing rope 33, in the process, the closing rope 33 pushes the closed rod 24 to rotate and moves out from the gap between the fixed frame 23 and the closed rod 24, when the net bag is lifted to the deck, the lifting device is closed, the opening of the locking ring 34 is opened, the closing rope 33 is loosened to make the sleeve ring 32 restore the pried open state, the catch is poured out and the surface impurities of the net bag are cleaned,Subsequently, the net bag is reassembled according to the above installation steps, and the device is reset to prepare for the next operation; through the multiple sets of I-shaped distribution of the movable channels 11 of the screening element 1, in combination with the connecting sieve plates 12 and the screening plates 16 with gradually decreasing pore diameters from bottom to top, the "large adult fish-medium adult fish-small adult fish-fry" step-by-step separation is realized, so that the fry that does not meet the commercial specifications returns to the sea from the topmost movable channel 11, avoiding the mis-catching of fry, at the same time, by setting the mesh size of the fishing net bag 31 to be smaller than the pore diameter of the topmost screening plate 16, it is ensured that the adult fish entering the fishing net bag 31 will not leak out, and at the same time, a small number of mis-screened fry can return through the mesh, reducing resource waste, in addition, through the "catching large and leaving small" screening logic of the fixing element 2 and the precise receiving of the collecting element 3, the bycatch of non-target species in traditional fishing is avoided, the interference with the marine ranching ecosystem is reduced, which meets the needs of sustainable fisheries development, and long-term use can promote the natural proliferation of ranching fishery resources, through the weight triggering mechanism of the fixing element 2, there is no need for artificial monitoring of the catch, when the fishing net bag 31 reaches the specified weight, the fixing frame 23 can be automatically driven to rotate and be released, realizing the linkage of "automatic collection-automatic shedding", reducing manual underwater operation, through the cooperation of the clamping plate 18, the clamping block 110 and the spring 111, the quick positioning and unlocking of the closed rod 24 is realized, without complex locking structure, a single person can complete the installation of the fixing element 2 and the collecting element 3, through the design of the closing rope 33 and the locking ring 34 of the collecting element 3, after the fishing net bag 31 is shed, the opening can be automatically tightened to avoid the fish from falling during lifting, and the closing rope 33 is directly connected to the lifting device of the fishing boat, without the need for additional salvage tools, greatly reducing the difficulty of deep-sea operation, at the same time, through the detachable connecting sieve plates 12 and screening plates 16, during later maintenance, the whole device does not need to be disassembled, only the old sieve plate needs to be replaced, reducing maintenance time and cost, and improving operation efficiency.

[0040] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. Fishing equipment for marine ranching, including: The screening component (1) for screening fish by size is characterized in that a fixing component (2) is provided on the screening component (1), and a collection component (3) for collecting the screened fish is provided on the fixing component (2). The fixing component (2) can automatically release the fixing of the collection component (3) after the collection component (3) reaches a specified weight. The fixing component (2) includes a rotating rod (21) fixedly connected to the screening component (1), a connecting plate (22) rotatably connected to the rotating rod (21), a fixing frame (23) fixedly connected to one end of the connecting plate (22), a closing rod (24) rotatably connected to one end of the fixing frame (23), an installation rod one (25) fixedly connected to the inside of the fixing frame (23), an installation rod two (26) fixedly connected to the inside of the closing rod (24), a fixing block one (27) rotatably connected to the installation rod one (25), a fixing block two (28) rotatably connected to the installation rod two (26), a limiting plate (29) fixedly connected to the screening component (1), and the limiting plate (29) is located below the rotating rod (21); During installation, the fixed frame (23) and the closing rod (24) are kept sealed. The collection piece (3) is passed through the inside of the fixed frame (23), and the open end of the collection piece (3) is flipped over to the outside. Then the fixed frame (23) is rotated so that it rotates synchronously around the rotating rod (21) until the closing rod (24) and the screening piece (1) are engaged. At this time, the part of the collection piece (3) flipped over on the fixed frame (23) is clamped between the screening piece (1) and the fixed frame (23) to complete the fixation. During operation, the accumulation of fish in the collection piece (3) increases the gravity. After reaching the threshold, it overcomes the clamping force and drives the fixed frame (23) and the closing rod (24) to rotate downward around the rotating rod (21) until the fixed frame (23) abuts against the lower limiting plate (29) and the rotation is restricted. At this time, the weight of the collection piece (3) further acts on the mounting rod, causing the fixing block to rotate around the corresponding mounting rod, so that the collection piece (3) falls off from the inside of the fixed frame (23). The screening component (1) includes a moving channel (11), a connecting screen plate (12) is embedded at the side end of the moving channel (11), a connecting block (13) is fixedly connected to the inner side of the moving channel (11), and a connecting member (113) is provided on the inner side of the connecting block (13). The moving channels (11) and connectors (113) are provided in multiple sets. Each pair of moving channels (11) is connected by a set of connecting blocks (13), and the connecting screen plates (12) on the multiple moving channels (11) have gradually smaller apertures from bottom to top. The collection component (3) includes a fishing net bag (31), with a ring (32) fixedly connected to the opening of the fishing net bag (31). A drawstring (33) is inserted into the ring (32), with a locking ring (34) fixedly connected to one end of the drawstring (33), and the other end of the drawstring (33) passing through the locking ring (34) and connected to the lifting device of the fishing boat.

2. The fishing equipment for marine ranching according to claim 1, characterized in that, The connector (113) includes a connecting cylinder (14) that is threaded to the inner side of the connecting block (13). A limit block (15) is fixedly connected to the outer side of the connecting cylinder (14). A sieve plate (16) is fixedly connected to the inner side of the connecting cylinder (14). The sieve plate (16) on the multiple sets of connectors (113) has a gradually decreasing aperture from bottom to top.

3. The fishing equipment for marine ranching according to claim 2, characterized in that, A limiting plate (17) is fixedly connected to the outside of the moving channel (11), and the limiting plate (17) is located on the side of the connecting screen plate (12). A snap-fit ​​plate (18) is fixedly connected to the outside of the moving channel (11).

4. The fishing equipment for marine ranching according to claim 3, characterized in that, The snap-fit ​​plate (18) is positioned above the connecting screen plate (12). A cavity (19) is provided at the bottom end of the snap-fit ​​plate (18). A snap-fit ​​block (110) is slidably inserted into the cavity (19). A spring (111) is fixedly connected to the top end of the snap-fit ​​block (110). One end of the spring (111) is fixedly connected to the top end of the cavity (19).

5. The fishing equipment for marine ranching according to claim 4, characterized in that, One end of the closing rod (24) is provided with a snap-fit ​​groove (112), which is adapted to the snap-fit ​​block (110).

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