Modular gravity type net cage oyster raft

Abstract

The invention relates to a modular gravity type net cage oyster raft which comprises a floating raft assembly, a cage frame assembly and an oyster cage. The floating mat assembly comprises a truss and a plurality of connecting pipes, the connecting pipes are connected to the interior of the truss, and a plurality of floating mat units arranged in a rectangular array are defined between the connecting pipes and the truss and / or between the connecting pipes; each cage frame assembly comprises a frame and floaters, the floaters are fixedly arranged below the frame, and the cage frame assemblies are detachably connected to at least one floating mat unit; and the plurality of oyster cages are hung on the frame and are used for culturing oysters. According to the invention, the oyster row is arranged into three modules which can be separated from each other, so that subunit operation of the workboat is facilitated, the workload of farmers is reduced, the efficiency and the safety of mounting or harvesting the oyster cages are improved, and the floaters are arranged on the cage frame assemblies, so that the downward pressure of the cage frame assemblies on the floating row assemblies is reduced, the buoyancy of the oyster row is enhanced, the service life of the oyster row is prolonged, and the storm resistance of the oyster row is improved.

Description

Technical Field

[0001] The invention relates to the technical field of marine aquaculture equipment, and in particular to a modular gravity cage oyster rack. Background Art

[0002] Oysters, also known as oysters, are the world's largest farmed shellfish and one of the important marine biological resources available to humans. They are a globally distributed species. Oysters are not only delicious and nutritious, but also have unique health functions and medicinal value. They are a seafood delicacy with high nutritional value.

[0003] With the development of aquaculture, oyster farming equipment has gradually changed from traditional cement pile insertion and scaffolding farming to pile-row hanging farming, floating rope hanging farming and floating row (raft) hanging farming, so as to improve the farming efficiency of oysters and reduce the farming cost. Pile-row hanging farming is affected by high tide and low tide, and its actual sea operation time is only half a day a day. It usually requires farmers to go out to sea in the middle of the night, and after arriving at the beach, they need to wait for the sea water to ebb to the appropriate position before they can start working, which is very cumbersome. Floating rope hanging farming uses PE buoys and inflatable buoys as floating objects, and several buoys are tied to the cable to carry out oyster farming in the form of oyster string hanging farming. In floating row hanging farming, the material of the floating row uses foam as a floating object, and bamboo and wooden frames are built to form oyster racks, and oyster farming is carried out in the form of oyster string hanging farming. However, PE floats, inflatable floats, and foam floats are prone to aging and breakage during use, thereby releasing microplastics into the ocean and causing long-term pollution to the marine ecological environment. Bamboo and wood materials are prone to cracking and breaking after long-term immersion in seawater and exposure to sunlight, causing damage to the aquaculture frame and causing economic losses to the farmers.

[0004] In addition, due to the continuous expansion of oyster farming in recent years, but the area of ​​coastal shallow waters is limited, it is difficult for plankton to meet the demand for oyster seedlings, and oyster farming has begun to develop in the direction of deep-sea farming. The coastal areas have large winds and waves, so deep-sea farming mainly relies on floating raft farming, which has slightly better wind and wave resistance than other farming models. However, the existing floating rafts still have shortcomings in terms of wind and wave resistance, especially when encountering typhoon weather. The floating rafts are easily affected by the huge waves caused by the typhoon and the impact of underwater undercurrents caused by the typhoon, and fall apart. Once the floating raft falls apart, the oyster seedlings hanging at the bottom will be lost in the sea, which will cause huge losses to the farmers. In addition, bamboo floating rafts have poor durability and low reuse rate. The fall apart of bamboo floating rafts leads to a large number of difficult-to-decompose foam buoys and rotten bamboo and wood floating on the sea surface, which has a great impact on the marine environment.

[0005] Based on the bamboo floating raft, the prior art discloses a floating raft, see Figure 1The floating raft includes a transverse basic tube 1, a vertical basic tube 2 and an oyster row rod 3. Several transverse basic tubes 1 are arranged at intervals along the first direction of the floating raft. Two of the vertical basic tubes 2 enclose the several transverse basic tubes 1 in the second direction to form a closed rectangle. The two ends of the transverse connecting tube 1 and the vertical connecting tube 2 are sealed with end caps. The several transverse basic tubes 1 are provided with a plurality of tube sleeves. A plurality of oyster row rods 3 pass through the tube sleeves and are connected to the transverse basic tube 1. The oyster row rod 3 is provided with a plurality of groove sections for hanging oyster strings. The transverse basic tube 1, the vertical basic tube 2 and the oyster row rod 3 are made of plastic. Several buoyancy mechanisms 4 are arranged at the bottom of the transverse basic tube 1 and the vertical basic tube 2. When the floating raft is used for oyster farming, the farmers need to hang the oyster strings one by one on the floating raft on the sea surface, which is inefficient and the working environment is dangerous. In addition, it is difficult to observe the growth status of oysters during the floating raft farming, and it is impossible to find and treat diseases in time. In addition, although the strength of the above-mentioned floating row is improved compared with the bamboo floating row, it still has the problem that the strength of the floating row is not enough, the amount of oysters cultured is small, and the oyster production per unit area is limited. If the oyster production is to be increased, the number of floating rows can be increased. However, if a plurality of the above-mentioned floating rows are dispersed and fixed at sea, a large sea area will be occupied and the cost is high. In addition, if the oyster production is increased by increasing the size of the floating row, it will lead to an increase in the overall gravity of the floating row, and as the floating row increases, the number of oyster strings hung on the floating row will also increase significantly, resulting in a significant increase in the force on the floating row, making the plastic base pipe and oyster row rod more prone to deformation, breakage and other problems, and even causing the loss of oyster strings. Moreover, since the floating row is fixed in the sea as a whole, once the floating row is damaged, the oyster strings at the corresponding position need to be lifted out of the sea surface, and the oyster strings need to be hung back on the floating row after the floating row is repaired, which is very troublesome, and the repair process needs to be carried out on the sea surface, which is relatively dangerous. If the strength of the floating raft is increased, for example, by replacing the material of the floating raft with steel or other materials, although the strength of the floating raft can meet the requirements, it will cause the overall gravity of the floating raft to increase significantly, and the requirements for buoyancy will also increase accordingly. In addition, the floating raft made of steel will be easily corroded and pollute the environment when immersed in seawater for a long time, and its ability to resist wind and waves is limited, and the maintenance cost is high. Therefore, how to improve the strength, buoyancy, service life and wind and wave resistance of deep-sea oyster rafts while ensuring their buoyancy is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The object of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a modular gravity cage oyster rack.

[0007] The present invention is realized through the following technical scheme: a modular gravity cage oyster rack, comprising a floating rack assembly, a cage assembly and an oyster cage; the floating rack assembly comprises a truss and a connecting pipe, a plurality of the connecting pipes are connected to the inside of the truss, and the connecting pipes and the truss and / or the plurality of connecting pipes are enclosed to form a plurality of floating rack units arranged in a rectangular array; the cage assembly comprises a frame and floats, a plurality of the floats are fixedly arranged under the frame, and a plurality of the cage assemblies are respectively detachably connected to at least one of the floating rack units; a plurality of the oyster cages are hung on the frame for oyster farming.

[0008] Compared with the prior art, the modular gravity cage oyster rack provided by the present invention is configured as three modules that can be separated from each other: oyster cages, cage frame components and floating rack components. When installing and harvesting oysters, the operating boat can operate in units, and install or harvest the oyster cages and cage frame components as a whole, thereby reducing the number and difficulty of hoisting, and at the same time avoiding the farmers from fixing the oyster cages one by one on the pedals to the floating racks, thereby improving the efficiency and safety of the operation and reducing the workload of the farmers; the detachable cage frame components are convenient for the farmers to maintain and repair the cage frame components that mainly bear the weight of the oyster cages, and the cage frame components are convenient for the farmers to maintain and repair the cage frame components that mainly bear the weight of the oyster cages, and the cage frame components are convenient for the farmers to maintain and repair the oyster cage cages. The components can be used in a simulated seawater environment on the shore. For example, the oyster seedlings hung on the cage components are first adaptively cultured and then the cage components are transported to the sea for deep-sea culture, which can improve the survival rate of the oysters. In addition, floats are arranged on each cage component. On the one hand, the buoyancy of the cage component can be enhanced, the downward pressure or downward pull of the cage component on the floating row component can be reduced, and the deformation and damage of the floating row component can be reduced, thereby reducing the strength requirements of the floating row component. On the other hand, the buoyancy of the oyster row as a whole can be enhanced, and the swaying and displacement of the oyster row in wind and waves can be reduced, thereby enhancing the life of the oyster row and its ability to resist wind and waves.

[0009] Furthermore, the truss includes floating tubes, and a plurality of the floating tubes are arranged in a U-shaped or quasi-U-shaped shape, the floating tubes are connected by hot-melt, and two adjacent floating tubes are connected in parallel by a plurality of connectors, and the connecting tubes and / or the floating tubes are combined to form a plurality of floating row units arranged in a rectangular array. By setting the truss of the floating row assembly to be a sealed U-shaped shape connected together by hot-melt, the buoyancy of the truss is enhanced; by connecting adjacent floating tubes together by a plurality of connectors, the stability of the truss is enhanced and it is not easy to fall apart, thereby improving the wind and wave resistance of the truss; at the same time, by connecting a plurality of connecting tubes to the inner side of the truss to form a stable mesh structure, the stability of the truss is further enhanced.

[0010] Furthermore, the middle part of each cage assembly is laid on the common connecting pipe of two adjacent floating row units, and the ends of the cage assembly are laid on the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units, and / or the cage assembly is connected to the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units through cables or fasteners; the cage assembly is located on the frame of each floating row unit and is provided with a plurality of oyster cages and a plurality of floats. By laying the two ends and the middle part of the long tube on the floating pipe and the connecting pipe, a more stable support for the cage assembly is achieved, and the force of the cage assembly on the floating pipe and / or the connecting pipe is avoided to be mainly concentrated on the connection of the binding rope or the fastener, which makes the connection between the floating pipe and / or the connecting pipe and the binding rope or the fastener easy to be damaged.

[0011] Furthermore, the frame includes at least two long tubes, at least two short tubes and a plurality of support tubes, the long tubes and the short tubes are connected to each other to form a rectangular frame body, the two ends of the long tube extend to the outside of the two short tubes respectively, and the length of the long tube is greater than the sum of the widths of the two floating row units; a plurality of support tubes are arranged at intervals above the rectangular frame body for hanging the oyster cage. Through this setting, the long tube can cooperate with the connector to limit the cage assembly to avoid collision between adjacent cage assemblies, and control the density of oysters to avoid affecting the growth of oysters.

[0012] Furthermore, the connecting pipes include transverse connecting pipes and vertical connecting pipes, a number of the transverse connecting pipes are arranged side by side along the first direction of the truss, extend along the second direction of the truss, and are fixedly connected to the floating pipe; a number of the vertical connecting pipes are arranged side by side along the second direction of the truss, extend along the first direction of the truss, and are fixedly connected to the floating pipe and / or the transverse connecting pipe, and the vertical connecting pipes, transverse connecting pipes and floating pipes are connected by tees, crosses and / or hot melt. Connecting the connecting pipes and floating pipes by hot melt can enhance the stability and wind and wave resistance of the floating row assembly; connecting the transverse connecting pipes and the vertical connecting pipes by tees; making the vertical connecting pipes on both sides of the transverse connecting pipes staggered with each other at the connection points with the transverse connecting pipes, so as to avoid stress concentration at the connection points leading to damage of the transverse connecting pipes.

[0013] Furthermore, the two transverse connecting tubes are arranged in the middle part of the truss and are connected to each other in parallel through a plurality of connecting parts, and at least one transverse connecting tube is arranged between the two transverse connecting tubes and the floating tubes; the two floating tubes connected in parallel to each other and the bottom of the two transverse connecting tubes are provided with a plurality of floating barrels at intervals along the second direction of the truss, and the narrow surfaces of the floating barrels are arranged in the direction of the water flow.

[0014] Furthermore, the connector connected to the floating tube includes a bracket and a handrail column, the bracket is provided with a socket connected to the floating tube, the handrail column is arranged at the top of the bracket and has a plurality of connection holes; the floating row assembly also includes a fixed pipe, the fixed pipe passes through the connection holes corresponding to each connector in sequence, and is connected end to end in sequence to form a rectangular frame. By connecting multiple fixed pipes into a multi-layer rectangular frame through the handrail column of the connector, the stability of the truss is further enhanced, and the multi-layer rectangular frame can protect people walking on the pedal, facilitate the operation of the farmers and facilitate tourists to carry out leisure fishing sightseeing. In addition, the rectangular frame can be used to hang nets to form fish farming cages, carry out mixed fish and oyster farming, and improve the economic benefits of farmers.

[0015] Furthermore, the oyster cage includes a mesh cage and a multi-layer partition arranged in the mesh cage, the mesh cage is provided with a plurality of flexible cables passing through and fixing the partition, the mesh cage is divided into a plurality of culture chambers by the partition, and the top of the mesh cage is connected to the support tube and the short tube by cables; the partition is a horizontally arranged partition, or a conical plate or an arc plate that is concave downward. Through this setting, the oyster cage can move with the wind and waves, and at the same time, the shape of the partition is used to disperse the impact force of the waves or typhoons, so that the overall fatigue resistance of the partition is improved, thereby improving the wind and wave resistance of the oyster cage.

[0016] Furthermore, the floating pipe, connecting pipe and supporting pipe are all HDPE pipes; reinforcing materials are arranged inside the supporting pipe to strengthen the strength of the supporting pipe; the connecting piece is injection molded by HDPE raw material. The oyster rack is mainly made of HDPE raw material, which has the advantages of being more wear-resistant, UV-resistant, better in extensibility, corrosion-resistant and high-temperature-resistant; and the connecting pipe of the supporting cage assembly and the supporting pipe of the oyster cage are set as reinforcing pipes to improve the strength and service life of the oyster rack, so that the floating rack can still maintain the structural integrity and stability under severe sea conditions; while other parts are not reinforced to reduce the weight of the oyster rack and improve the buoyancy of the oyster rack. The increase in buoyancy helps to offset the downward pressure of the wind and waves on the oyster rack, and reduce the possibility of the oyster rack tilting, sinking or even capsizing.

[0017] Furthermore, the present invention also provides a modular gravity cage oyster rack, comprising an anchor assembly and the floating row assembly, the cage assembly and the oyster cage, the projections of the two floating row assemblies in the vertical plane in the width direction overlap; the anchor assembly comprises a plurality of anchor piles arranged outside the two floating row assemblies and a plurality of cement sinkers arranged between the two floating row assemblies, the anchor piles are fixed to the seabed, and connected to the width direction of the adjacent floating row assemblies by anchor chains and / or cables; the cement sinkers are connected to the width direction of the two floating row assemblies by a plurality of cables. The modular gravity cage oyster rack is kept stable by the anchor assembly and its own weight, has the advantages of strong wind and wave resistance (15-level typhoon), good stability, etc., has the characteristics of wide application sea area, large breeding capacity, high efficiency, friendly to the seawater environment, long service life, easy anchoring, and matching mechanized operation, and is very suitable for the construction of COSCO oyster ranches. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a floating row in the prior art.

[0019] Figure 2 This is a schematic structural diagram of a modular gravity cage oyster rack according to Example 1 of the present invention.

[0020] Figure 3 for Figure 2 A partial enlarged view of the oyster rack shown.

[0021] Figure 4 for Figure 2 BB cross-section of the oyster rack shown.

[0022] Figure 5 for Figure 3 A schematic structural diagram of the cage frame assembly of the oyster rack shown.

[0023] Figure 6 for Figure 2 A schematic structural diagram of the floating row assembly.

[0024] Figure 7 for Figure 6 A schematic structural diagram of the truss of the floating row assembly is shown.

[0025] Figure 8 for Figure 2 Schematic diagram of the structure of the floating barrel shown.

[0026] Fig. 9 for Figure 2 Schematic diagram of the structure of the connecting parts shown.

[0027] Fig.10 It is a schematic diagram of the structure of the cage frame assembly and the oyster cage.

[0028] Fig.11 for Fig.10 Side view of the cage assembly shown.

[0029] Fig.12 for Fig.10 A side view of another embodiment of a cage assembly is shown.

[0030] Fig.13 This is a schematic structural diagram of the modular gravity cage oyster rack provided in Example 2.

[0031] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0032] Example 1

[0033] See also Figure 2-4 , which is a schematic diagram of the structure of the modular gravity cage oyster rack provided in this embodiment. The oyster rack includes a floating row assembly 10, a cage assembly 20, an oyster cage 30 and an anchor assembly 40. The floating row assembly 10 includes a plurality of floating row units A arranged in a rectangular array, and a plurality of the cage assemblies 20 are detachably connected to at least one of the floating row units A, and the oyster cage 30 is hung on the cage assembly 20 for oyster farming. The anchor assembly 40 is arranged on the seabed and connected to the floating row assembly 10 for fixing the floating row assembly 10, thereby enhancing the stability of the oyster rack. By providing a detachable floating row assembly 10 and cage assembly 20, farmers can assemble and disassemble the cage assembly 20 and the oyster cage 30 on the operating vessel or on the shore, reducing the time of working on the oyster rack and making the entire operation process safer and more efficient.

[0034] Specifically, the floating row assembly 10 includes a truss 11 and a connecting pipe 12, and the connecting pipe 12 is connected to the inside of the truss 11 to form a plurality of floating row units A arranged in a rectangular array. In some embodiments, a buoy 13 is provided at the bottom of the truss 11 and / or the connecting pipe 12 to enhance the buoyancy of the floating row assembly 10 and improve the wind and wave resistance of the floating row assembly 10.

[0035] Furthermore, the width direction of the floating row assembly 10 is arranged in the direction of the water flow to reduce the force of the water flow and the waves on the floating row assembly 10 and improve the stability of the floating row assembly 10.

[0036] See also Figure 3-5 The cage assembly 20 includes a frame 21 and a float 22, wherein the float 22 is disposed below the frame 21 and connected by a binding rope or a fastener. Specifically, the frame 21 includes a long tube 211, a short tube 212 and a support tube 213, wherein a plurality of the long tubes 211 and a plurality of the short tubes 212 are connected to each other to form the main body of the frame 21, and a plurality of support tubes 213 are disposed at intervals above the main body of the frame 21 for hanging the oyster cage 30.

[0037] In some embodiments, at least two of the long tubes 211 and at least two of the short tubes 212 are perpendicular to each other to form a rectangular frame body, a plurality of the support tubes 213 are spaced apart above the long tubes 211, extend along the length direction of the short tubes 212, and are fixedly connected to at least two of the long tubes 211, and at least two of the floats 22 are symmetrically arranged at the bottom of the frame 21 and are fixedly connected to the corresponding long tubes 211 and / or the short tubes 212, so as to provide buoyancy for the cage assembly 20 and maintain the balance and stability of the cage assembly 20.

[0038] As an example, each cage assembly 20 is arranged in a floating row unit A and is connected to the truss 11 and / or the connecting pipe 12 forming the floating row unit A through cables or fasteners. By providing independent floating row assemblies 10 and cage assemblies 20, it is convenient to repair the cage assemblies 20 that mainly bear the gravity of the oyster cage 30, and it is conducive to mechanized installation of the cage assemblies 20 and harvesting of the cage assemblies 20, thereby reducing the workload of farmers. Fig.12 Furthermore, in some embodiments, the cage frame 20 also includes a fixing rod 23, the fixing rod 23 includes a vertical rod 231 and a horizontally arranged cross rod, and the tops of multiple vertical rods 231 are fixedly connected to the frame 21; the cross rod 232 includes a first cross rod 232a fixedly connected to the bottom of the vertical rod 231 to form a rectangular frame structure, and a second cross rod 232b fixedly connected to the first cross rod 232a at both ends, and multiple second cross rods 232 correspond to the short tubes 212 and the support tubes 213 one by one, and the second cross rods 232 are parallel to the short tubes 212 and the support tubes 213, which are used to fix the bottom of the oyster cage, enhance the stability and safety of the oyster cage during the breeding process, and prevent the oyster cage from being lost due to the impact of wind and waves. The strength of the fixing rod 23 is less than that of the frame 21. The fixing rod 23 interacts with the plurality of oyster cages 30 to enhance the overall strength and structural stability of the cage assembly 20 and the plurality of oyster cages 30 connected thereto. That is, the plurality of oyster cages 30 enhance the stability of the cage assembly 20 to prevent it from falling apart, and the cage assembly 20 fixes both ends of the oyster cage 30 to prevent the cable of the oyster cage 30 from breaking and causing the oyster cage to be lost. In addition, the fixing rod 23 is hollow and has strong buoyancy, and can provide buoyancy for the cage frame 20 and the plurality of oyster cages 30 connected thereto together with the frame 21 and the float 22.

[0039] As an example, each of the cage assemblies 20 is arranged on at least two floating row units A. Specifically, the frame 21 of the cage assembly 20 is set on the common connecting pipe 12 between at least two adjacent floating row units A, and the cage assembly 20 is located in the region of each floating row unit A. A number of oyster cages 30 are hung on the frame 21, and a number of floats 22 are fixed at the bottom. By setting the cage assembly 20 to be set on the connecting pipe 12 between at least two floating row units A, it is convenient to mechanizedly install the cage assembly 20 and harvest the cage assembly 20. Furthermore, the cage assembly 20 is connected to the truss 11 and / or the connecting pipe 12 forming the floating row unit A by cables or fasteners, so as to improve the stability and wind and wave resistance of the oyster rack and prevent the cage assembly 20 from being separated from the floating row assembly 10.

[0040] Furthermore, in this embodiment, the frame 21 includes four long tubes 211 vertically arranged on two short tubes 212, and the short tubes 212 and the long tubes 211 are connected by a four-way piece or a hot-melt connection. The long tube 211 located outside the frame 21 and the adjacent long tubes 211 form a long tube assembly, and the two long tube assemblies are respectively arranged at the two ends of the short tubes 212, and extend to the outside of the two short tubes 212 in a direction perpendicular to the short tubes 212, so as to be connected to the floating row assembly 10. A plurality of support tubes 213 are arranged on the long tubes 211 at intervals, and are fixedly connected to the four long tubes 211. The support tubes 213 and the short tubes 212 extend to the outside of the four long tubes 211 in a direction perpendicular to the long tubes 211, so as to increase the number of oyster cages 30 that can be hung on the cage assembly 20.

[0041] Furthermore, the trusses 11 and / or the connecting pipes 12 forming the floating row unit A are provided with a plurality of limiting structures distributed along the length direction of the floating row unit A. The length of the long tube 211 is greater than the width of two adjacent floating row units A, the distance between two long tubes 211 in the long tube assembly is greater than the width of the limiting structure, or the distance between two long tube assemblies is greater than the width of the limiting structure; the four floaters 22 are symmetrically arranged at the bottom of the frame 21 and fixedly connected to the long tube 211. When the cage assembly 20 is installed on the floating row assembly 10, the middle part of the long tube 211 is laid on the connecting pipe 12 between at least two adjacent floating row units A, and the two ends are laid on the trusses 21 and / or the connecting pipe 12 of the two floating row units A. The four floats 22 are evenly distributed in each floating row unit A to maintain the stability of the cage assembly 20; in addition, the two long tubes 211 in the long tube assembly are respectively located at the two ends of a limiting structure, and the long tube 211 cooperates with the limiting structure to realize the positioning of the cage assembly 20, avoid collision between adjacent cage assemblies 20, and control the breeding density of oysters.

[0042] Further, see Figure 6-7The truss 11 includes a plurality of floating tubes, which are arranged in a U-shape or a quasi-U-shape, and the head and tail parts of the butted floating tubes are connected by hot-melt. The two ends of the connecting tube 12 are fixed to the inner side of the truss 11 by hot-melt and / or tees, dividing the inner area of ​​the truss 11 into a plurality of floating row units A arranged in a rectangular array. The connection between the floating tubes is set as an arc angle to further reduce the impact of wind and waves on the truss 11 and improve the wind and wave resistance of the floating row assembly 10. Preferably, an elbow is provided on the outside of the connection between the floating tubes to further enhance the strength of the floating tube connection, thereby improving the wind and wave resistance of the floating row assembly 10.

[0043] Furthermore, the connecting pipes 12 include transverse connecting pipes 121 and vertical connecting pipes 122, a plurality of the transverse connecting pipes 121 are arranged side by side along the first direction of the truss 11, extend along the second direction of the truss 11, and are fixedly connected to the inner side of the truss 11; a plurality of the vertical connecting pipes 122 are arranged side by side along the second direction of the truss 11, extend along the first direction of the truss 11, and are fixedly connected to the truss 11 and / or the transverse connecting pipes 121, and the vertical connecting pipes 122, the transverse connecting pipes 121 and / or the truss 11 are enclosed in a floating row unit A arranged in a rectangular array. The number and size of the floating row units A can be set according to specific needs. In this embodiment, the first direction is the width direction of the floating row assembly 10, and the second direction is the length direction of the floating row assembly 10. The widths of the floating row units A in the first direction of the truss 11 are consistent, and the lengths of at least two floating row units A are different. Preferably, the lengths of the floating row units A at both ends of the truss 11 in the second direction are less than the lengths of the floating row units A in the middle of the truss 11 in the second direction, and the lengths of at least two floating row units A in the first direction are different. In other embodiments, the first direction may also be the length direction, and the second direction may also be the width direction, without limitation thereto.

[0044] Further, the floating tubes include transverse floating tubes 111 and vertical floating tubes 112, and a plurality of the transverse floating tubes 111 and a plurality of the vertical floating tubes 112 are connected by heat-melting at the head and tail parts in sequence to form the truss 11. Preferably, the head and tail parts of two transverse floating tubes 111a and two vertical floating tubes 112a are connected by heat-melting in sequence to form a first rectangular frame, and the two transverse floating tubes 111b and two vertical floating tubes 112b are arranged to form a second rectangular frame slightly smaller than the first rectangular frame. One end of the two transverse floating tubes 111b and the two vertical floating tubes 112b protrudes from the second rectangular frame and is connected to the vertical floating tubes 112a or the transverse floating tubes 111a of the first rectangular frame, and the adjacent transverse floating tubes 111a and transverse floating tubes 111b, and the vertical floating tubes 112a and vertical floating tubes 112b are connected by a plurality of connecting pieces 14 to form a rectangular truss 11 of a similar type. In this embodiment, the ends of each floating tube are connected to other floating tubes by hot-melt, the middle of each floating tube is connected to other floating tubes by a plurality of connectors 14, and the ends of each connecting tube 12 are fixedly connected to the inner side of the second rectangular frame to enhance the stability of the truss 11 and prevent the truss 11 from falling apart due to wind and waves.

[0045] Preferably, the transverse connecting pipe 121 includes a first transverse connecting pipe 121a and a second transverse connecting pipe 121b, the first transverse connecting pipe 121a is arranged in the middle of the second direction of the truss 11, and its two ends are respectively fixed to the two vertical floating pipes 112b, and the two first transverse connecting pipes 121a are connected in parallel to each other through a plurality of connecting members 14. A plurality of vertical connecting pipes 122 are arranged between the transverse floating pipe 111b and the adjacent first transverse connecting pipe 121 along the second direction of the truss 11, and a plurality of second transverse connecting pipes 121b are arranged along the first direction of the truss 11, and both ends of the second transverse connecting pipe 121b are respectively fixedly connected to the two vertical floating pipes 112b, one end of the vertical connecting pipe 122 is fixedly connected to the transverse floating pipe 111b or the first transverse connecting pipe 121a, and the other end is fixedly connected to the second transverse connecting pipe 121b, and the vertical connecting pipe 122 is connected to the second transverse connecting pipe 121b by a tee, a cross and / or a hot melt method. In this embodiment, two second transverse connecting pipes 121b are arranged in the floating row assembly 10, and three vertical connecting pipes 122 are arranged between the second transverse connecting pipe 121b and the adjacent transverse floating pipe 111b or the first transverse connecting pipe 121a. In other embodiments, the number of the second transverse connecting pipes 121 b and the vertical connecting pipes 122 can be set according to specific needs.

[0046] In some embodiments, the connecting pipe 12 is connected to the truss 11 by hot melting to form an internally connected and sealed buoyancy tube assembly, thereby enhancing the wind and wave resistance of the floating row assembly 10 and preventing the floating row assembly 10 from falling apart. In other embodiments, the connecting pipe 12 is connected to the truss 11 by a tee or a cross to form a buoyancy tube assembly with a detachable connecting pipe 12, thereby facilitating the replacement of a damaged connecting pipe 12.

[0047] See also Figure 6 In some embodiments, the vertical connecting tubes 122 on both sides of the second transverse connecting tube 121b are staggered with each other and are respectively connected to the second transverse connecting tube 121b by means of a tee and / or hot melt, so that the connection between the second transverse connecting tube 121b and the vertical connecting tube 122 is dispersed on the second transverse connecting tube 121b, thereby reducing the stress concentration phenomenon of the second transverse connecting tube 121b and enhancing the stability of the second transverse connecting tube 121b.

[0048] Furthermore, the floating row assembly 10 also includes a floating barrel 13, a connecting piece 14 and a pedal 15. The floating barrel 13 is arranged at the bottom of the truss 11 and / or the connecting pipe 12, and is connected to the truss 11 and / or the connecting pipe 12. A plurality of the floating barrels 13 are fixedly arranged at the bottom of the truss 11 and / or the bottom of the two first transverse connecting pipes 121a, and the width direction of the floating barrels 13 is arranged in the direction of the water flow, so as to reduce the force of the water flow and the waves on the floating row assembly 10 and improve the stability of the floating row assembly 10.

[0049] See also Figure 8The floating barrel 13 is blow-molded as a whole by high-density polyethylene material, and includes a floating barrel body 131 and a connecting member 132. The floating barrel body 131 includes a streamlined barrel body. The connecting member 132 includes a first connecting portion and a second connecting portion. The first connecting portion is arranged above the floating barrel body 131, and includes two through holes 132a for the floating tube or the connecting tube 12 to pass through. The second connecting portion is used to connect the floating barrel body 131. One of the connecting member 132 and the floating barrel body 131 is provided with a groove, and the other is clamped in the groove. In some embodiments, the two floating tubes or the two first transverse connecting tubes 121a are arranged above the floating barrel 13, and a protrusion is arranged above the floating barrel body 131, and the protrusion is located between the two floating tubes or the two first transverse connecting tubes 121a. The first part of the connecting member 132 is provided with a groove that is engaged with the protruding portion, and the two through holes 132a are respectively provided on both sides of the groove. The second part of the connecting member 132 is fixedly connected to the floating barrel body 131. The two connecting members 132 are respectively provided at both ends of the floating barrel body 131 to connect the floating barrel body 131 with the two floating tubes or the two first transverse connecting tubes 121a. The second part of the connecting member 132 is a binding rope connected to the outer periphery of the floating barrel body 131, or the second part of the connecting member 132 is a fastener fixedly connected to the floating barrel body 131 by screws.

[0050] See also Fig. 9 The connector 14 includes a bracket 141, which is an integral bracket structure. The left and right sides of the bracket 141 are provided with plug holes 142. The floating tube or the connecting tube 12 passes through the plug holes 142 to connect the connector 14 with two adjacent floating tubes or two adjacent connecting tubes 12, thereby enhancing the stability of the floating row assembly 10. The bracket 141 forms a bracket structure with multiple through holes through multiple support bars and support holes, which facilitates the passage of seawater through the bracket 141 and reduces the impact of waves on the bracket 141. In some embodiments, the bracket 141 serves as a limiting structure for positioning the cage assembly 20.

[0051] Furthermore, the connector 14 connected to the floating tube also includes a handrail column 143 fixed to the top of the bracket 141, the handrail column 143 is located on the outside of the truss 11, and a plurality of connection holes 143a are set on the handrail column 143. The floating row assembly 10 also includes a fixed pipe 16, which passes through the connection holes 143a corresponding to each connector 14 in sequence, and is connected end to end in sequence to form a fixed frame. The multi-layer fixed frame further enhances the stability of the truss 11 and protects people walking on the pedals. In this embodiment, two connection holes 143a are set on the handrail column 143, and the distance between the two connection holes 143a is 50-70cm. The height of the connector 14 with the handrail column 143 is 110-130cm. In other embodiments, the size of the connector 14 can be set according to specific needs.

[0052] The pedal 15 is arranged above the truss 11 and / or the connecting pipe 12. Specifically, a pedal mounting base is arranged on the top of the bracket 141, and the pedal 15 is fixedly connected to the pedal mounting base through a locking piece. Preferably, the pedal is about 400 mm wide and about 75 mm thick.

[0053] In some embodiments, the middle portion of the long tube 211 of the cage assembly 20 is placed on the second transverse connecting tube 121b, one end of the long tube assembly is clamped with the connecting piece 14 on the truss 11, and the other end is clamped with the connecting piece 14 on the first transverse connecting tube 121a, thereby facilitating the rapid installation of the cage assembly 20 and the floating row assembly 10.

[0054] Furthermore, the cage assembly 20 also includes hooks, and a plurality of the hooks are symmetrically arranged in the middle of the two groups of long tube assemblies. The hooks cooperate with the hooks on the mechanized operation vessel to facilitate the mechanized operation vessel to install or harvest the cage assembly 20.

[0055] See also Figure 10-12The oyster cage 30 includes a net cage 31 and a multi-layer partition 32 arranged in the net cage 31. The net cage 31 is provided with a plurality of flexible cables 33 passing through and fixing the partition. The net cage 31 is divided into a plurality of breeding chambers by the partition 32. The top of the net cage 31 is connected to the cage frame assembly 20 by cables. When the oyster cage 30 is used, the flexible cables 33 increase the flexibility of the entire oyster cage 30, so that the flexible cables 33 can move with the wind and waves, which can improve the wind and wave resistance and unit water yield of the oyster cage 30. The partition 32 is provided with a plurality of small holes for water circulation, providing a good growth environment for oysters, and improving the meat quality and meat yield of oysters. When not in use, the partitions 32 can be stacked to reduce the occupied space and be convenient to use. In some embodiments, the cage frame assembly 20 also includes fasteners, and several of the fasteners are fixed to the support tube 213 and / or the short tube 212. The oyster cage 30 is connected to the fasteners via cables, and the oyster cage 30 can be conveniently and quickly installed or disassembled by manually opening and closing the fasteners.

[0056] Furthermore, a knot for fixing the partition 32 is provided on the flexible cable 33 under each partition 32. The flexible cable is formed by cross-weaving multiple fiber strands. The partition 32 is a horizontally arranged partition, or a downwardly concave conical plate or an arc-shaped plate. The conical plate and the arc-shaped plate can save breeding space and increase the oyster yield. At the same time, they can reduce the impact of wind and waves on the oyster cage 30 and oysters and extend the service life.

[0057] The anchoring assembly 40 includes anchor piles 41. A plurality of anchor piles 41 are symmetrically arranged on the outside of the floating row assembly 10 and are respectively connected to the width direction of the floating row assembly 10. By fixing the anchor piles 41 on both sides of the width direction of the floating row assembly 10, the influence of wind and waves on the width direction of the floating row assembly 10 is reduced, thereby further improving the wind and wave resistance of the oyster rack.

[0058] In some embodiments, the spacing between the oyster cage 213 and the short tube 211 and between the two support tubes 213 is preferably 400-700 mm, so as to control the culture density of oysters and improve the quality of oysters. In this embodiment, the spacing between the oyster cage 213 and the short tube 211 and between the two support tubes 213 is about 500 mm.

[0059] In some embodiments, the length of the short tube 211 is preferably 2-4 m, and the length of the long tube 212 is preferably 4-5 m. In this embodiment, the length of the short tube 211 is about 3.02 m, and the length of the long tube 212 is about 4.74 m. Fig.10 In this embodiment, the cage assembly 20 can hang up to 40 oyster cages 30. In other embodiments, the size of the cage assembly 20 can be adjusted according to specific needs.

[0060] In some embodiments, the distance between the two long tubes 212 in the long tube assembly is preferably 300-500 mm; the distance between the two floats 22 in the length direction of the cage assembly 20 is 1-2 m, preferably 1.5 m.

[0061] In some embodiments, the spacing between the two vertical connecting pipes 122 is preferably 7 to 11 m, and the distance between the vertical connecting pipe 122 and the adjacent vertical floating pipe 112 is preferably 5 to 9 m; the distance between the second transverse connecting pipe 121b and the transverse floating pipe 111 and / or the first transverse connecting pipe 121a is preferably 1.5 to 2.2 m. By reasonably setting the number and distance of transverse connecting pipes and vertical connecting pipes, the requirements of the floating row assembly for strength and buoyancy can be met at the same time. In this embodiment, the spacing between the two vertical connecting pipes 122 is about 9 m, and the distance between the vertical connecting pipe 122 and the adjacent vertical floating pipe 112 is about 7 m; the distance between the transverse floating pipe 111 and the first transverse connecting pipe 121a is about 4 m, and the floating row assembly is 32.277 meters long, 8.875 meters wide, and 0.6 meters high, and up to 18 cage assemblies 20 can be installed. In other embodiments, the size of the floating row assembly 10 and the cage assembly 20 can be set according to specific needs.

[0062] In some embodiments, the truss 11, the connecting pipe 12 and the frame 21 are all made of high-density polyethylene (HDPE) material, and the connecting piece 14 is injection molded with HDPE raw material. Compared with the bamboo and wood materials of traditional floating rafts, HDPE materials are more environmentally friendly, more wear-resistant, UV-resistant, more extensible, corrosion-resistant and high-temperature resistant. The oyster racks made of HDPE pipes can be used in seawater for a long time without being easily damaged, avoiding the aging problem caused by seawater erosion and ultraviolet radiation, and have a high bearing capacity, can withstand a large weight and pressure, and have a stable structure and are not easy to deform, which can ensure the stability of the oyster racks in various sea conditions; in addition, the HDPE pipe can be recycled and reused after use, reducing pollution to the environment. At the same time, it will not release harmful substances into the seawater and is harmless to the marine ecological environment; and due to its strong corrosion resistance and weather resistance, its maintenance and maintenance are relatively simple, and it has the characteristics of long service life, low maintenance cost, good environmental protection, etc., which makes its long-term economic benefits higher.

[0063] Further, in some embodiments, the floating tube uses a HDPE tube with an outer diameter of 315 mm and a wall thickness greater than or equal to 12 mm, the connecting tube 12 uses a HDPE tube with an outer diameter greater than 300 mm and a wall thickness greater than or equal to 15 mm, the long tube 212 and the short tube 211 use a HDPE tube with an outer diameter of 125 mm and a wall thickness greater than or equal to 7.4 mm, the supporting tube 213 uses a HDPE tube with an outer diameter of 90 mm and a wall thickness greater than or equal to 6.7 mm, and the specifications of the floating barrel 13 and the float 22 are 0.94 m long, 0.58 m wide, and 0.62 m high. In other embodiments, the sizes of the truss 11, the connecting tube 12, the long tube 212, the short tube 211, and the supporting tube 213 can be set according to specific needs.

[0064] Further, in some embodiments, the support tube 213 and the short tube 212 are provided with reinforcing ribs or reinforcing layers inside to improve the strength of the HDPE tube, and the materials of the reinforcing ribs or reinforcing layers include reinforcing materials such as glass fiber. By enhancing the strength of the support tube 213 and the short tube 212, they can withstand the pulling force of the support tube 213 and the short tube 212 by a number of oyster cages 30 when the cage assembly 20 is hoisted, thereby improving the strength and stability of the cage assembly 20. In addition, when the support tube 213 is damaged by force, the support tube 213 and / or the short tube 212 detachably connected by a four-way piece can facilitate the maintenance and replacement by the breeder; the long tube 211 is HDPE, and the interior is hollow or filled with hydrophobic rock wool or other environmentally friendly fillers, thereby providing better buoyancy support at sea and ensuring safety in use. The long tube 211 and the float 22 together provide buoyancy for the cage assembly 20, enhance the wind and wave resistance of the cage assembly 20, and reduce the pressure of the cage assembly 20 on the floating row assembly, so that the floating row assembly 10 has a higher buoyancy, thereby enhancing its wind and wave resistance and reducing the damage of the connecting pipe 12 after being compressed. By setting the local strength of the frame 21 and the local buoyancy, the cage assembly 20 can reduce the gravity and increase the buoyancy as much as possible, while improving the strength of the position where the cage assembly 20 hangs the oyster cage 30, so as to prevent the cage assembly 20 from being damaged or falling apart due to insufficient strength, resulting in the loss of the oyster cage and affecting economic benefits.

[0065] Furthermore, the second transverse connecting pipe 121b is a HDPE pipe with a reinforcing rib or a reinforcing layer inside to withstand the downward pressure of the cage assembly 20 on the second transverse connecting pipe 121b. In some embodiments, the first transverse connecting pipe 121a and the transverse floating pipe 111b are reinforced pipes, and / or the connection between the connecting pipe 12 and the truss 11 is strengthened by a member.

[0066] Furthermore, a reinforcing sleeve is provided on the outer side of the connection between the floating tube and the connecting tube 12 and the connection between the floating tube, the connecting tube 12 and the connecting piece 14 to enhance the strength of the connection and prevent the connection from being deformed or damaged due to stress.

[0067] In some embodiments, the structure of the float 22 is similar to that of the float 13, except that the diameter of the insertion hole of the float 22 is smaller than that of the insertion hole of the float 13. In some embodiments, the float 22 includes a float body 131 and a connecting member 132, the float body 131 includes a streamlined barrel body and a raised portion disposed above the streamlined barrel body, and the raised portion is provided with a recessed placement groove. The support pipe 213 can pass through the placement groove and be connected to the float 22, further enhancing the stability of the cage assembly 20 and preventing the cage assembly 20 from being blown away by strong winds.

[0068] When oyster farming is carried out, the oyster cage 30 is connected to the frame 21 of the cage assembly 20 by a cable, and then the multiple cage assemblies 20 stacked on the working boat are installed in the floating row assembly 10 in sequence through the crane arm. The middle part of the frame 21 of each cage assembly 20 is built on the second transverse connecting pipe 121b shared by at least two floating row units A, and the end is built on the transverse floating pipe 11 or the first transverse connecting pipe 121a on both sides of the two floating row units A, and the two long tubes 211 of the long tube assembly cooperate with the corresponding connecting piece 14 to achieve position limiting. At the same time, the farmer can also fix the cage assembly 20 in the floating row assembly 10 by a cable or a fastener to carry out oyster farming. After the farming is completed, the cage assembly 20 in the floating row assembly 10 is lifted to the working bed in sequence by the crane arm of the working boat, and then the oyster cage 30 on the cage assembly 20 is disassembled to harvest oysters. By configuring the oyster rack to be composed of three separable modules: oyster cages, cage frame assemblies, and floating rack assemblies and anchoring assemblies fixed to the sea, multiple oyster cages are hung on the cage frame assemblies, making it convenient for the operating vessel to operate in units when installing and harvesting the oyster cages, thus reducing the number and difficulty of lifting. At the same time, it can avoid the farmers fixing the oyster cages one by one on the floating rack on the pedals, thereby improving the efficiency and safety of the operation and reducing the workload of the farmers.

[0069] Example 2

[0070] See also Fig.13The oyster rack provided in this embodiment includes two floating row assemblies 10, a plurality of cage assemblies 20 and oyster cages 30 matched with the floating row assemblies 10, and an anchor assembly 40 for fixing the floating row assemblies. The width direction of the two floating row assemblies 10 is arranged in the direction of the water flow, and the projections of the two floating row assemblies 10 in the vertical plane in the width direction overlap. The floating row assembly 10, the cage assembly 20, the oyster cage 30, and the anchor assembly 40 are similar to the oyster rack structure described in Example 1, except that the anchor assembly 40 in this embodiment includes a plurality of anchor piles 41 arranged outside the two floating row assemblies 10 and a cement pile 42 arranged between the two floating row assemblies 10, the anchor pile 42 is fixed to the seabed, and is connected to the width direction of the truss 11 by an anchor chain and / or a cable. The cement sinker 42 is placed on the seabed corresponding to the middle position of the two floating row assemblies 10, and each of the cement sinkers 42 is connected to the two floating row assemblies 10 by a plurality of cables. The number and weight of the cement sinkers 42 can be set according to specific requirements. By setting the cement sinkers 42, the two floating row assemblies 10 are fixed and connected as a whole, thereby improving the stability and wind and wave resistance of the oyster row and increasing the cultivation area of ​​the oyster row.

[0071] In this embodiment, three anchor piles 41 are arranged on both sides of the two floating row assemblies 10, and the three anchor piles 41 are arranged at intervals along the width direction of the oyster row assembly 10; two cement sinkers 42 are provided, each weighing preferably five tons, and the two cement sinkers 42 are arranged side by side at the bottom of the middle position of the two floating row assemblies 10, and are connected to the two floating row assemblies 10 by six cables respectively.

[0072] Compared with the prior art, the modular gravity cage oyster rack provided by the present invention has the following beneficial effects:

[0073] (1) The modular gravity cage oyster rack provided by the present invention is stabilized by anchoring components and its own weight, and has the advantages of strong wind and wave resistance (15-level typhoon) and good stability. It has the characteristics of wide application sea area, large breeding capacity, high efficiency, friendly to seawater environment, long service life, easy anchoring, and matching mechanized operation, and is very suitable for the construction of COSCO oyster farms.

[0074] (2) By configuring the oyster rack to be composed of three separable modules: oyster cages, cage frame assemblies, and floating rack assemblies and anchor assemblies fixed to the sea, multiple oyster cages are hung on the cage frame assemblies, which makes it convenient for the operating vessel to operate in units when installing and harvesting the oyster cages, thereby reducing the number and difficulty of lifting. At the same time, it can avoid the farmers from fixing the oyster cages one by one on the floating rack on the pedals, thereby improving the efficiency and safety of the operation and reducing the workload of the farmers. In addition, the separable cage frame assemblies are convenient for farmers to carry out maintenance and repairs, and can be used in a simulated seawater environment on the shore to carry out adaptive cultivation of oyster seedlings before transporting them to sea for cultivation, thereby enhancing the survival rate of oysters.

[0075] (3) By arranging the cage assembly and the floating row assembly independently from each other, it is convenient to lift the cage assembly out of the floating row assembly during the oyster farming process, so as to flush the oyster cages in the cage assembly, and conveniently and quickly remove the attachments on the oyster cages to prevent the attachments from hindering the oysters from absorbing nutrients in the water and causing the oysters to die. At the same time, the time and cost of manually cleaning each oyster cage one by one are reduced. In addition, during the flushing process of the oyster cages, the farmers can observe the growth status of the oysters in the oyster cages, promptly discover and treat oyster diseases, and avoid mutual infection between oysters resulting in a large number of oyster losses.

[0076] (4) By setting the width direction of the floating row assembly to face the water flow, the waves mainly act on the width direction of the floating row assembly rather than the length direction, thereby reducing the impact of the waves on the floating row assembly by reducing the effective area; at the same time, by setting anchor piles and cement sinkers on both sides of the width direction of the floating row assembly to fix the floating row assembly, the influence of the wave impact on the stability of the floating row assembly is reduced.

[0077] (5) By setting the truss of the floating row assembly to be a U-shaped structure connected together by hot melting, and connecting adjacent floating tubes together through multiple connectors, it is not easy to fall apart, thereby improving the stability and wind and wave resistance of the truss; by setting the corners of the truss to be streamlined, the stress concentration phenomenon at the edge of the truss is reduced, and damage caused by excessive local stress is avoided. At the same time, the streamlined design can reduce the friction resistance and shape assistance between the floating row assembly and the water flow, and reduce the adverse conditions such as tilting and rolling caused by the action of waves; by connecting multiple connecting tubes to the inner side of the truss to form a stable mesh structure, and connecting multiple fixed tubes to form a multi-layer rectangular frame through the handrail columns of the connecting parts, further The stability of the truss is enhanced, and the multi-layer rectangular frame can protect people walking on the pedals, which is convenient for farmers to work and for tourists to go on leisure fishing sightseeing; the vertical connecting pipes on both sides of the second horizontal connecting pipe are connected to the second horizontal connecting pipe through tees respectively, so that the force application points of the vertical connecting pipes on both sides on the second horizontal connecting pipe are more dispersed, and the force points of the second horizontal connecting pipe are prevented from being easily damaged due to stress concentration. By opening a through hole in the connecting piece, the weight of the connecting piece is reduced, and the buoyancy of the floating row assembly is increased. At the same time, the waves can partially pass through the through hole of the connecting piece, thereby reducing the direct impact force of the waves on the front of the connecting piece, thereby reducing the damage and shaking of the floating row assembly.

[0078] (6) The oyster rack described in the present invention is mainly made of HDPE raw material, which has the advantages of being more wear-resistant, UV-resistant, better ductile, corrosion-resistant and high-temperature-resistant; in addition, the connecting pipe of the supporting cage assembly and the supporting pipe of the oyster cage are arranged as reinforced pipes to improve the strength and service life of the oyster rack, so that the floating rack can still maintain the structural integrity and stability under severe sea conditions; while other parts are not reinforced to reduce the weight of the oyster rack and improve the buoyancy of the oyster rack. The increase in buoyancy helps to offset the downward pressure on the oyster rack caused by wind and waves, and reduce the possibility of the floating rack tilting, sinking or even capsizing.

[0079] (7) By setting the long tube of the cage assembly to extend to the outside of the short tube, and the length of the long tube is greater than the sum of the widths of the two floating row units, the two ends and the middle of the long tube are placed on the floating tube and the connecting tube, so as to support the cage assembly and avoid the gravity of the cage assembly being mainly concentrated on the connection of the binding rope or the fastener, which makes the connection easy to be damaged. At the same time, the long tube cooperates with the connecting piece to fix the cage assembly to avoid collision between adjacent cage assemblies, which affects the service life, and control the density of oysters to avoid affecting the growth of oysters. In addition, by setting a number of floats on each cage assembly, the buoyancy of the cage assembly is enhanced, the downward pressure or downward pull force of the cage assembly on the floating row assembly is reduced, the buoyancy of the oyster row is enhanced, and the swaying and displacement of the oyster row in wind and waves are reduced, so as to improve the oyster row's ability to resist wind and waves. At the same time, the reduction of downward pressure or downward pull force helps to reduce deformation and damage of the floating row assembly, thereby reducing maintenance costs and increasing the life of the oyster row.

[0080] (8) By arranging flexible cables between the multi-layer partitions inside the oyster cage, the oyster cage can move with the wind and waves, thereby improving the wind and wave resistance of the oyster cage; by arranging the partitions as downward-concave conical plates or curved plates, the breeding area is increased and the oyster yield is increased. At the same time, the shape of the partitions is used to disperse the impact force of waves or typhoons, so that the overall fatigue resistance of the partitions is improved, which can reduce the impact of wind and waves on the oyster cages and oysters and extend the service life of the oyster cages.

[0081] (9) The body of the buoy is streamlined to increase the strength of the buoy and improve its ability to resist wind and waves. The narrow side of the buoy is set in the direction of the water flow to reduce the area of ​​the buoy affected by the waves and further improve its ability to resist wind and waves.

[0082] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A modular gravity cage oyster rack, characterized by: It includes a floating row assembly, a cage assembly and an oyster cage; the floating row assembly includes a truss and connecting pipes, a plurality of the connecting pipes are connected to the inside of the truss, and the connecting pipes and the truss and / or the plurality of connecting pipes are enclosed to form a plurality of floating row units arranged in a rectangular array; the cage assembly includes a frame and floats, a plurality of the floats are fixedly arranged under the frame, and a plurality of the cage assemblies are detachably connected to at least one of the floating row units; a plurality of the oyster cages are hung on the frame for oyster farming.

2. The modular gravity cage oyster rack according to claim 1, characterized in that: The truss includes floating tubes, a plurality of the floating tubes are arranged in a U-shape or a quasi-U-shape, the floating tubes are connected by hot-melt, two adjacent floating tubes are connected to each other in parallel by a plurality of connectors, and the connecting tubes and / or the floating tubes enclose a plurality of floating row units arranged in a rectangular array.

3. The modular gravity cage oyster rack according to claim 2, characterized in that: The middle part of each cage assembly is laid on a connecting pipe shared by two adjacent floating row units, and the ends of the cage assembly are laid on the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units, and / or the cage assembly is connected to the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units through cables or fasteners; a plurality of oyster cages and a plurality of floats are respectively arranged on the frame of the cage assembly located in each floating row unit.

4. The modular gravity cage oyster rack according to claim 3, characterized in that: The frame includes at least two long tubes, at least two short tubes and a plurality of supporting tubes. The long tubes and the short tubes are interconnected to form a rectangular frame body. The two ends of the long tube extend to the outside of the two short tubes respectively, and the length of the long tube is greater than the sum of the widths of the two floating row units. The plurality of supporting tubes are spaced apart above the rectangular frame body for hanging the oyster cage.

5. The modular gravity cage oyster rack according to claim 4, characterized in that: The connecting pipes include transverse connecting pipes and vertical connecting pipes. Several of the transverse connecting pipes are arranged side by side along the first direction of the truss, extend along the second direction of the truss, and are fixedly connected to the floating pipes. Several of the vertical connecting pipes are arranged side by side along the second direction of the truss, extend along the first direction of the truss, and are fixedly connected to the floating pipes and / or the transverse connecting pipes. The vertical connecting pipes, transverse connecting pipes and floating pipes are connected by tees, crosses and / or hot melt methods.

6. The modular gravity cage oyster rack according to claim 5, characterized in that: The two transverse connecting tubes are arranged in the middle part of the truss and are connected to each other in parallel through a plurality of connecting parts. At least one transverse connecting tube is arranged between the two transverse connecting tubes and the floating tubes. The two floating tubes connected in parallel to each other and the bottom of the two transverse connecting tubes are provided with a plurality of floating barrels at intervals along the second direction of the truss, and the narrow surfaces of the floating barrels are arranged in the direction of the water flow.

7. The modular gravity cage oyster rack according to claim 6, characterized in that: The connecting piece connected to the floating tube includes a bracket and a handrail column. The bracket is provided with a socket connected to the floating tube. The handrail column is arranged on the top of the bracket and has a plurality of connecting holes. The floating row assembly also includes a fixed pipe, which passes through the corresponding connecting holes of each connecting piece in turn and is connected end to end in turn to form a rectangular frame.

8. The modular gravity cage oyster rack according to claim 7, characterized in that: The oyster cage comprises a mesh cage and a multi-layer partition arranged in the mesh cage, a plurality of flexible cables passing through and fixing the partition are arranged on the mesh cage, a plurality of breeding chambers are divided by the partition, and the top of the mesh cage is connected to the support tube and the short tube by cables; the partition is a horizontally arranged partition, or a downwardly concave conical plate or an arc plate.

9. The modular gravity cage oyster rack according to claim 8, characterized in that: The floating pipe, connecting pipe and supporting pipe are all HDPE pipes; reinforcing material is arranged inside the supporting pipe to enhance the strength of the supporting pipe; the connecting piece is injection molded with HDPE raw material.

10. A modular gravity cage oyster rack, characterized by: It comprises an anchoring assembly and any one of the floating row assemblies according to claims 1 to 9, the cage assembly and the oyster cage, wherein the projections of the two floating row assemblies in the vertical plane in the width direction overlap; the anchoring assembly comprises a plurality of anchor piles arranged on the outsides of the two floating row assemblies and a plurality of cement sinkers arranged between the two floating row assemblies, the anchor piles are fixed to the seabed and connected to the adjacent floating row assemblies in the width direction by anchor chains and / or cables; the cement sinkers are connected to the two floating row assemblies in the width direction by a plurality of cables.

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