Aquaculture net cage with double-layer modular netting structure

Abstract

The utility model discloses an aquaculture net cage with a double-layer modularized netting structure, which comprises a net cage body, an inner-layer net rack, an outer-layer net rack, an inner-layer netting and an outer-layer netting, the inner-layer net rack is arranged on the inner side of the net cage body, and the outer-layer net rack is arranged on the outer side of the net cage body; the inner-layer netting comprises a bottom surface inner netting and a side surface inner netting spliced on the bottom surface inner netting, and the bottom surface inner netting and the side surface inner netting are detachably mounted on the inner-layer net rack; the outer netting comprises a bottom surface outer netting and a side surface outer netting spliced on the bottom surface outer netting, and the bottom surface outer netting and the side surface outer netting are detachably mounted on the outer net rack; the inner-layer netting and the outer-layer netting are matched with the net cage body in shape in an unfolded state. Therefore, the net is installed by arranging the net rack, the installation operation of the net on the net cage body is simpler and more convenient, the purpose of quickly installing the net is achieved, the breeding safety effect is better by arranging the inner-layer net and the outer-layer net, and economic losses are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of breeding equipment, especially to a breeding net cage with double-layer modular netting structure. BACKGROUND

[0002] The breeding net cage is a kind of aquaculture equipment, which is assembled into a certain shape and specification by synthetic fiber netting or metal netting, and is placed in a specific water area for breeding. This breeding method using the breeding net cage has the advantages of high flexibility, high-density breeding, convenient water quality management, etc., and is popular among the public.

[0003] The netting of the breeding net cage used in the prior art is usually fixedly connected on the column structure in a whole piece, and only one layer of netting is provided. For example, the Chinese invention patent with the patent name "a multi-column modular deep-sea breeding net cage and its installation method" with the publication number CN115644105B discloses one or more than two net cage modules connected in sequence along the horizontal direction. The structure of a single net cage module comprises three groups of column bodies arranged at the same triangle three corners, and a three-prism structure netting arranged inside the three groups of column bodies, and the three side edges of the netting are vertically fitted along the length direction of the corresponding column body.

[0004] However, the prior art still has the following defects:

[0005] 1. The netting structure of the existing breeding net cage is mostly single-layer netting structure. The single-layer netting is easily damaged by sea waves, floating objects and fish, etc., and may even lead to fish escape and cause huge economic losses. Moreover, the existing netting structure is assembled on the column structure of the cage in a whole piece, which has a complex installation structure. The whole piece of netting structure is difficult to disassemble and replace due to its large size, and the replacement and maintenance take a long time and are low in efficiency.

[0006] 2. Moreover, the damage of the netting structure usually occurs in the local part of the whole piece of netting, and the whole piece of damaged netting needs to be replaced, which is high in maintenance and repair cost of the subsequent netting structure. UTILITY MODEL CONTENTS

[0007] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a breeding net cage with double-layer modular netting structure.

[0008] The purpose of the utility model is achieved by the following technical scheme: a breeding net cage with double-layer modular netting structure, comprising a net cage body, an inner layer net rack, an outer layer net rack, an inner layer netting and an outer layer netting, wherein the inner layer net rack is arranged on the inner side of the net cage body, and the outer layer net rack is arranged on the outer side of the net cage body.

[0009] The inner layer net cover comprises a bottom inner layer net cover and a side inner layer net cover spliced on the bottom inner layer net cover, and the bottom inner layer net cover and the side inner layer net cover are detachably installed on the inner layer net frame.

[0010] The outer layer net cover comprises a bottom outer layer net cover and a side outer layer net cover spliced on the bottom outer layer net cover, and the bottom outer layer net cover and the side outer layer net cover are detachably installed on the outer layer net frame.

[0011] The inner layer net cover and the outer layer net cover are adapted to the shape of the net cage body in the unfolded state.

[0012] Further, the net cage body is a cage-shaped space truss structure comprising a self-elevating installation unit and a plurality of net cage surface modules, and each of the net cage surface modules is detachably installed on the self-elevating installation unit; the net cage surface module comprises a bottom module and a side module, the bottom module constitutes the bottom of the cage-shaped space truss structure, and the side module is arranged on the circumferential side of the bottom module and is used for constituting the side of the cage-shaped space truss structure.

[0013] Further, the inner layer net frame and the outer layer net frame are respectively fixed on the inner and outer sides of each of the net cage surface modules.

[0014] Further, each of the bottom inner layer net cover and the side inner layer net cover is spliced by a plurality of net cover bodies, and each of the net cover bodies is detachably and independently installed on the inner layer net frame.

[0015] Each of the bottom outer layer net cover and the side outer layer net cover is spliced by a plurality of net cover bodies, and each of the net cover bodies is detachably and independently installed on the outer layer net frame.

[0016] Further, the inner layer net frame comprises a bottom inner layer net frame and a side inner layer net frame, the plurality of net cover bodies on the bottom inner layer net cover are detachably and independently installed on the bottom inner layer net frame, and the plurality of net cover bodies on the side inner layer net cover are detachably and independently installed on the side inner layer net frame.

[0017] The outer layer net frame comprises a bottom outer layer net frame and a side outer layer net frame, the plurality of net cover bodies on the bottom outer layer net cover are detachably and independently installed on the bottom outer layer net frame, and the plurality of net cover bodies on the side outer layer net cover are detachably and independently installed on the side outer layer net frame.

[0018] The bottom inner layer net frame and the bottom outer layer net frame are respectively fixed on the inner and outer sides of the bottom module, and the side inner layer net frame and the side outer layer net frame are respectively fixed on the inner and outer sides of the side module.

[0019] Further, edges of the bottom inner net clothes, the side inner net clothes, the bottom outer net clothes and the side outer net clothes are provided with sealing strips, and the bottom inner net clothes, the side inner net clothes, the bottom outer net clothes and the side outer net clothes are respectively detachably installed on the inner layer net frame and the outer layer net frame through the sealing strips.

[0020] Further, the side module has side horizontal rods and side inclined rods, the side horizontal rods include first and second side horizontal rods arranged in parallel with each other;

[0021] The side inclined rods include first and second side inclined rods, the first and second side inclined rods are hingedly connected with each other, two ends of the first side inclined rod are respectively hingedly connected with the first and second side horizontal rods, one end of each of the second side inclined rods is hingedly connected with the first side inclined rod, and the other end of each of the second side inclined rods is respectively hingedly connected with the first and second side horizontal rods.

[0022] Further, the side module has side vertical rods arranged at two ends of the two side horizontal rods arranged in parallel with each other, and two ends of the side vertical rods are hingedly connected with the side inclined rods.

[0023] Further, the bottom module has first and second bottom rods, the first bottom rod is hingedly connected with the side horizontal rods at bottoms of two adjacent side modules, and one end of the second bottom rod is hingedly connected with the other end of the second bottom rod.

[0024] Further, the aquaculture net cage includes a pile leg, the self-elevating installation unit has a sleeve hole for sleeving the pile leg, and the self-elevating installation unit and the net cage surface module are elevated along the direction of the pile leg.

[0025] Compared with the prior art, the application has the following beneficial effects:

[0026] (1) The embodiment of the application sets the inner layer net frame and the outer layer net frame on the inner and outer sides of the net cage body, so that the inner layer net clothes and the outer layer net clothes are respectively detachably installed on the inner layer net frame and the outer layer net frame, thereby eliminating the cumbersome operation of installing the net clothes on the stand column structure, and achieving the purpose of quickly installing the net clothes on the net cage body.

[0027] (2) The embodiment provided by the application provides the implementation mode of installing the inner layer net clothes and the outer layer net clothes in a detachable and independent mode on the net rack, compared with the implementation mode of installing the net clothes in an integral mode in the previous aquaculture net cage, the problems of large size of the integral net clothes structure, complex installation structure, difficult disassembly and assembly, and high cost of integral replacement due to local damage are solved, and the disassembly and assembly convenience of the inner layer net clothes and the outer layer net clothes is improved, the installation structure is simplified, and the damaged small piece of net clothes body can be replaced in a targeted manner, so that the maintenance is facilitated, and the maintenance cost is reduced.

[0028] (3) The edge sealing strip is arranged at the edge of each net clothes, and then the edge sealing strip is detachably connected to the inner layer net rack and the outer layer net rack, so that the net clothes is quickly installed on the side module and the bottom module in a modular mode; and the edge sealing strip has the effect of reinforcing the structural strength of the net clothes, and the service life of the net clothes is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application.

[0030] Figure 2 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application. Figure 1 It is an enlarged schematic view of position A in the preferred embodiment of the application.

[0031] Figure 3 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application.

[0032] Figure 4 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application.

[0033] Figure 5 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application. Figure 4 It is an enlarged schematic view of position B in the preferred embodiment of the application.

[0034] Figure 6 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application.

[0035] Figure 7 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application.

[0036] Figure 8 It is a three-dimensional schematic view of the connection of adjacent side modules of the aquaculture net cage in the preferred embodiment of the application.

[0037] In the drawings:

[0038] 10. Gymnasium body; 101. Bottom module; 1011. First bottom rod; 1012. Second bottom rod; 102. Side module; 1021. First side crossbar; 1022. Second side crossbar; 1023. Side vertical rod; 1024. First side diagonal rod; 1025. Second side diagonal rod; 103. Self-elevating installation unit; 1031. Hinge joint; 1032. Sleeve hole; 1033. Assembly slot; 1034. Positioning block;

[0039] 20. Inner mesh cover on the bottom; 21. Inner mesh cover on the sides; 22. Outer mesh cover on the bottom; 23. Outer mesh cover on the sides; 201. Edge sealing strip;

[0040] 30. Inner space frame; 301. Bottom inner space frame; 302. Side inner space frame; 31. Outer space frame; 311. Bottom outer space frame; 312. Side outer space frame;

[0041] 50. Pile leg; 501. Gear rack. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0043] like Figures 1-8 As shown, an aquaculture cage with a double-layer modular netting structure is used for aquaculture in specific water areas, such as sea areas, lakes, or fishponds. The aquaculture cage with a double-layer modular netting structure includes a cage body 10, an inner net frame 30, an outer net frame 31, an inner net, an outer net, and legs 50 for supporting the cage body 10. When fully extended, the cage body 10 generally forms a cage-like spatial truss structure. The cage body 10 has a self-elevating installation unit 103 and multiple cage surface modules, and each cage surface module includes a bottom module 101 and side modules 102.

[0044] Therefore, when installing the cage body 10, each bottom module 101 and side module 102 is detachably installed on the self-elevating installation unit 103, and the side modules 102 are installed around the bottom modules 101, with the self-elevating installation unit 103 located at the corners of the bottom modules 101 and the side modules 102. This results in the bottom modules 101 forming the bottom of the cage-like spatial truss structure of the cage body 10, and the side modules 102 forming the sides of the cage-like spatial truss structure of the cage body 10, thus completing the assembly of the side and bottom frame structures of the cage body 10.

[0045] The inner layer net rack 30 includes a bottom inner layer net rack 301 and a side inner layer net rack 302, and the outer layer net rack 31 includes a bottom outer layer net rack 311 and a side outer layer net rack 312. Therefore, when the net rack is installed, the bottom inner layer net rack 301 and the bottom outer layer net rack 311 are respectively fixed and welded on the inner and outer sides of the bottom module 101, and the side inner layer net rack 302 and the side outer layer net rack 312 are respectively fixed on the inner and outer sides of the side module 102, thereby completing the installation of the net rack on the bottom module 101 and the side module 102.

[0046] The inner layer net cover includes a bottom inner net cover 20 and a side inner net cover 21 spliced on the bottom inner net cover 20, and the outer layer net cover includes a bottom outer net cover 22 and a side outer net cover 23 spliced on the bottom outer net cover 22. Therefore, when the net cover is installed, the bottom inner net cover 20 is detachably installed on the bottom inner layer net rack 301, the side inner net cover 21 is detachably installed on the side inner layer net rack 302, the bottom outer net cover 22 is detachably installed on the bottom outer layer net rack 311, and the side outer net cover 23 is detachably installed on the side outer layer net rack 312, so that the inner layer net cover and the outer layer net cover are adapted to the shape of the net cage body 10 in the unfolded state, thereby completing the assembly of the net cover on the truss structure of the net cage body 10.

[0047] By separately arranging the inner layer net rack 30 as the bottom inner layer net rack 301 and the side inner layer net rack 302, and separately arranging the outer layer net rack 31 as the bottom outer layer net rack 311 and the side outer layer net rack 312, the modularization of the net rack is realized, which facilitates the welding and fixation of the net rack on each module of the net cage body 10, and facilitates the batch production of the net rack.

[0048] Correspondingly, the inner layer net cover is arranged as the bottom inner net cover 20 and the side inner net cover 21, and the outer layer net cover is arranged as the bottom outer net cover 22 and the side outer net cover 23, thereby realizing the modularization of the net cover, facilitating the detachable installation of the net cover on the net rack according to the arrangement of the net rack, and facilitating the batch production of the net cover.

[0049] In addition, the self-elevating installation unit 103 has a sleeve hole 1032 for sleeving the pile leg 50, and can perform lifting action along the vertical direction of the pile leg 50 together with the net cage module, the net rack and the net cover under the driving of the self-elevating installation unit 103, thereby adjusting the installation height of the aquaculture net cage.

[0050] In this way, the embodiment of the present application correspondingly arranges the inner layer net rack 30 and the outer layer net rack 31 on the inner and outer sides of the net cage body 10, so as to facilitate the detachable installation of the inner layer net cover and the outer layer net cover on the inner layer net rack 30 and the outer layer net rack 31, thereby eliminating the cumbersome operation of installing the net cover on the column structure in the past, and achieving the purpose of quickly installing the net cover on the net cage body 10.

[0051] Moreover, by setting the inner layer net and the outer layer net, the inner layer net and the outer layer net are respectively detachably installed on the inner layer net frame 30 inside the net cage body 10 and the outer layer net frame 31 outside the net cage body 10, thereby avoiding the huge economic loss caused by the damage of the single-layer net structure of the previous breeding net cage, providing one more layer of protection for the user, providing a remedy opportunity for the user, and avoiding economic loss of the user.

[0052] More specifically, the side module 102 is built into a truss structure by the side horizontal rods, the side inclined rods and the side vertical rods 1023. Specifically, the side horizontal rods include the first side horizontal rod 1021 and the second side horizontal rod 1022, and the side inclined rods include the first side inclined rod 1024 and the second side inclined rod 1025.

[0053] Each side module 102 is provided with at least one first side horizontal rod 1021 and one second side horizontal rod 1022, which are arranged in parallel with each other, and the first side horizontal rod 1021 is arranged above the second side horizontal rod 1022. Therefore, the approximate depth of the net cage body 10 can be determined by setting the distance between the first side horizontal rod 1021 and the second side horizontal rod 1022.

[0054] Each side module 102 is provided with a plurality of first side inclined rods 1024 and a plurality of second side inclined rods 1025, which are cross-linked in X shape to form a group of inclined rod assemblies. A plurality of groups of inclined rod assemblies are arranged along the length direction of the first side horizontal rod 1021 and the second side horizontal rod 1022, and the inclined rod assemblies are arranged between the first side horizontal rod 1021 and the second side horizontal rod 1022. The upper ends of the first side inclined rods 1024 and the second side inclined rods 1025 of each group of inclined rod assemblies are hinged to the first side horizontal rod 1021, and the lower ends of the first side inclined rods 1024 and the second side inclined rods 1025 of each group of inclined rod assemblies are hinged to the second side horizontal rod 1022, thereby forming the truss structure of the side module 102.

[0055] In order to further improve the flexibility of the truss structure of the side module 102, one first side inclined rod 1024 and two second side inclined rods 1025 are arranged in each group of inclined rod assemblies. The two ends of the first side inclined rod 1024 are hinged to the first side horizontal rod 1021 and the second side horizontal rod 1022, respectively. The other two second side inclined rods 1025 are hinged to the middle part of the first side inclined rod 1024 at one end, and the other ends of the two second side inclined rods 1025 are hinged to the first side horizontal rod 1021 and the second side horizontal rod 1022, respectively. When disassembly and replacement are needed, the two second side inclined rods 1025 can be disassembled first, and then the first side inclined rod 1024 can be disassembled.

[0056] Moreover, a top rod can be added between the first side edge horizontal rods 1021 of two adjacent side modules 102 to further strengthen the structural connection strength between the first side edge horizontal rods 1021 of two adjacent side modules 102.

[0057] To further improve the truss structure strength of the side module 102, the side edge vertical rods 1023 are arranged at both ends of the first side edge horizontal rods 1021 and the second side edge horizontal rods 1022, so that the upper and lower ends of the side edge vertical rods 1023 are respectively hinged to the end portions of the first side edge diagonal rods 1024 and the second side edge diagonal rods 1025, and a group of first side edge diagonal rods 1024 and second side edge diagonal rods 1025 close to the end portions of the side edge horizontal rods are supported and connected by the side edge vertical rods 1023.

[0058] According to the truss structure of the side module 102 described above, when the grid frame is installed on the side module 102, the side inner layer grid frame 302 and the side outer layer grid frame 312 can be respectively pre-welded to the inner and outer sides of the first side edge horizontal rods 1021, the second side edge horizontal rods 1022, the first side edge diagonal rods 1024, the second side edge diagonal rods 1025, and the side edge vertical rods 1023.

[0059] Moreover, the side inner layer grid frame 302 and the side outer layer grid frame 312 are both grid frame structures composed of a plurality of metal rods connected to each other, and the metal rod connection mode of the side inner layer grid frame 302 and the side outer layer grid frame 312 can be arranged according to the connection relationship between the horizontal rods, diagonal rods, and vertical rods of the side module 102, so as to facilitate the welding and fixing of the side inner layer grid frame 302 and the side outer layer grid frame 312 on the side module 102 and improve the connection stability between them, thereby achieving the purpose of respectively fixing the side inner layer grid frame 302 and the side outer layer grid frame 312 on the inner and outer sides of the side module 102.

[0060] The bottom module 101 has first bottom rods 1011 and second bottom rods 1012, and each of the first bottom rods 1011 and the second bottom rods 1012 is provided with a plurality of rods. The two ends of each first bottom rod 1011 are respectively hinged to the second side edge horizontal rods 1022 of the bottom portions of two adjacent side modules 102. Therefore, the first bottom rods 1011 have a function of strengthening the structural connection strength between the second side edge horizontal rods 1022 of two adjacent side modules 102.

[0061] One end of the second bottom bars 1012 is hingedly connected to each other through the connecting seat, and the other end of the second bottom bars 1012 is hingedly connected to different first bottom bars 1011, so that the second bottom bars 1012 are hingedly connected to each other to form a cross structure, thereby improving the structural stability of the bottom module 101. Therefore, the truss structure of the bottom module 101 is formed by the structural arrangement between the first bottom bar 1011, the second bottom bar 1012 and the second side edge cross bar 1022.

[0062] According to the truss structure of the bottom module 101, when the net rack is installed on the bottom module 101, the bottom inner layer net rack 301 and the bottom outer layer net rack 311 can be pre-welded on the inner and outer sides of the first bottom bar 1011, the second bottom bar 1012 and the second side edge cross bar 1022 connected to the second bottom bar 1012, respectively. Similarly, the metal rod connection mode of the bottom inner layer net rack 301 and the bottom outer layer net rack 311 can be arranged according to the connection relationship between the first bottom bar 1011, the second bottom bar 1012 and the second side edge cross bar 1022, so as to facilitate the welding and fixation of the bottom inner layer net rack 301 and the bottom outer layer net rack 311 on the bottom module 101 and improve the connection stability between them. Further, the purpose of fixing the bottom inner layer net rack 301 and the bottom outer layer net rack 311 on the inner and outer sides of the bottom module 101, respectively, is achieved.

[0063] Preferably, each of the bottom inner net cover 20 and the side inner net cover 21 provided by the embodiment of the present application is spliced by multiple net cover bodies, and each net cover body can be detachably and independently installed on the inner layer net rack 30; each of the bottom outer net cover 22 and the side outer net cover 23 is spliced by multiple net cover bodies, and each net cover body can be detachably and independently installed on the outer layer net rack 31.

[0064] Specifically, when the net cover is detachably installed on the bottom inner layer net rack 301 and the bottom outer layer net rack 311, multiple net cover bodies on the bottom inner net cover 20 are detachably and independently installed on the bottom inner layer net rack 301, and multiple net cover bodies on the bottom outer net cover 22 are detachably and independently installed on the bottom outer layer net rack 311, so as to realize the detachable installation of multiple net cover bodies on the inner and outer sides of the bottom module 101, facilitate the disassembly, maintenance and replacement of the net cover on the bottom module 101, and further reduce the maintenance cost of the net cover.

[0065] When the net cover is detachably installed on the side inner layer net rack 302 and the side outer layer net rack 312, multiple net cover bodies on the side inner net cover 21 are detachably and independently installed on the side inner layer net rack 302, and multiple net cover bodies on the side outer net cover 23 are detachably and independently installed on the side outer layer net rack 312, so as to realize the detachable installation of multiple net cover bodies on the inner and outer sides of the side module 102, facilitate the disassembly, maintenance and replacement of the net cover on the side module 102, and further reduce the maintenance cost of the net cover.

[0066] Moreover, the multi-piece net body on the inner layer net rack 30 and the outer layer net rack 31 is in a splicing style, and has high observability.

[0067] Thus, the embodiment of the present application provides a multi-piece detachable and independently installed inner layer net and outer layer net on the net rack, compared with the previous implementation means of installing the net structure in a whole piece, the embodiment solves the problems of large size of the whole piece net structure, complex installation structure, difficult disassembly and assembly, and high cost of replacing the whole piece when partial damage occurs, and further improves the disassembly and assembly convenience of the inner layer net and the outer layer net, simplifies the installation structure, and can replace the damaged small piece of net body, which is convenient for maintenance and reduces the maintenance cost.

[0068] In addition, the edge of the bottom inner net 20, the side inner net 21, the bottom outer net 22 and the side outer net 23 is provided with an edge sealing strip 201, which is provided as a rigid strip or a flexible strip or a rope. During the installation of the net, the edge sealing strip 201 is detachably connected to the inner layer net rack 30 and the outer layer net rack 31, so as to realize the purpose of quickly installing the net on the side module 102 and the bottom module 101 in a modular way. Moreover, the edge sealing strip 201 has the effect of reinforcing the structural strength of the net, and improves the service life of the net.

[0069] In the actual implementation process, the detachable connection of the edge sealing strip 201 on each net to the bottom inner layer net rack 301, the bottom outer layer net rack 311, the side inner layer net rack 302 and the side outer layer net rack 312 includes a binding connection, a buckle connection, a hook connection and the like, so as to realize the purpose of quickly disassembling and assembling the net.

[0070] In order to further improve the flexibility of the overall truss structure of the net body 10, the self-lifting installation unit 103 is further optimized and designed. Specifically, a plurality of hinge joints 1031 are arranged on the outer periphery of the sleeve hole 1032 of the self-lifting installation unit 103. Since the self-lifting installation unit 103 is arranged at the corner of the bottom module 101 and the side module 102, the two ends of the first side horizontal rod 1021 and the second side horizontal rod 1022 are hingedly connected to the hinge joints 1031 of the self-lifting installation unit 103, and the first side inclined rod 1024 and the second side inclined rod 1025 of each group of inclined rod assemblies close to the two ends of the side horizontal rod are also hingedly connected to the hinge joints 1031 of the self-lifting installation unit 103. Thus, the adjacent two side modules 102 are flexibly hingedly connected through the self-lifting installation unit 103, and the independent disassembly and assembly of the horizontal rods and the inclined rods are also facilitated.

[0071] In addition, the self-elevating installation unit 103 further has a driving motor (not shown in the figure), the pile leg 50 is inserted into the sleeve hole 1032 of the self-elevating installation unit 103, the two ends of the side connecting crossbar are supported by the pile leg 50, and then the four corner positions of the net cage body 10 are supported by the pile leg 50, so that the breeding net cage is stably installed.

[0072] The side of the pile leg 50 is provided with a rack 501, the rack 501 is arranged along the length direction of the pile leg 50, the rack 501 is in transmission engagement with the output gear of the driving motor, under the driving of the driving motor, the self-elevating installation unit 103 can be lifted along the direction of the pile leg 50, and then the installation height of the net cage body 10 is adjusted. Moreover, the sleeve hole 1032 of the self-elevating installation unit 103 is provided with a fitting groove 1033, the orifice part of the sleeve hole 1032 is provided with a positioning block 1034, the rack 501 of the pile leg 50 is matched and installed through the fitting groove 1033, and the rack 501 on the pile leg 50 is positioned and assembled through the positioning block 1034, and then the lifting stability of the net cage body 10 on the pile leg 50 is improved, and the operation is simple and convenient.

[0073] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application, and any non-essential changes and replacements made by the person skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A cage having a double-layered modular netting structure, characterized in that, The net cage body, the inner layer net rack, the outer layer net rack, the inner layer net cover and the outer layer net cover are provided. The inner layer net cover comprises a bottom inner net cover and a side inner net cover spliced on the bottom inner net cover. The outer layer net cover comprises a bottom outer net cover and a side outer net cover spliced on the bottom outer net cover. The inner layer net cover and the outer layer net cover are adapted to the shape of the net cage body in the unfolded state.

2. The net pen with a dual-layer modular netting structure of claim 1, wherein, The net cage body is a cage-shaped space truss structure comprising a self-lifting installation unit and a plurality of net cage surface modules.

3. The net pen with a dual-layer modular netting structure of claim 2, wherein, The inner layer net rack and the outer layer net rack are respectively fixed on the inner and outer sides of each net cage surface module.

4. A net cage with a double-layered modular netting structure according to claim 2 or 3, characterized in that, Each bottom inner net cover and side inner net cover is spliced by a plurality of net cover bodies which are independently installed on the inner layer net rack. Each bottom outer net cover and side outer net cover is spliced by a plurality of net cover bodies which are independently installed on the outer layer net rack.

5. The net pen having a dual-layer modular netting configuration of claim 4, wherein, The inner layer net rack comprises a bottom inner layer net rack and a side inner layer net rack. The outer layer net rack comprises a bottom outer layer net rack and a side outer layer net rack. The bottom inner layer net rack and the bottom outer layer net rack are respectively fixed on the inner and outer sides of the bottom module.

6. A net cage with a double-layered modular netting structure according to any one of claims 1-3, characterized in that, The side inner layer net rack and the side outer layer net rack are respectively fixed on the inner and outer sides of the side module.

7. The net pen with dual layer modular netting configuration of claim 2, wherein, The side module has a side horizontal bar and a side inclined bar. The side inclined bar comprises a first side inclined bar and a second side inclined bar. The first side inclined bar and the second side inclined bar are crossly hinged. One end of the second side inclined bar is hinged with the first side inclined bar, and the other end is respectively hinged with the first side horizontal bar and the second side horizontal bar.

8. The net pen having a dual-layer modular netting configuration of claim 7, wherein, The side module has side vertical rods arranged at both ends of two side horizontal rods arranged in parallel to each other, and both ends of the side vertical rods are hinged with the side inclined rods.

9. The net pen with a dual-layer modular netting structure of claim 7, wherein, The bottom module has a first bottom rod hinged with the side horizontal rods at the bottom of two adjacent side modules, and a second bottom rod hinged at one end and hinged with the first bottom rod at the other end.

10. The net pen with dual-layer modular netting structure of claim 2, wherein, The culture net cage includes a pile leg, the self-elevating installation unit has a sleeve hole for sleeving the pile leg, and the self-elevating installation unit and the net cage surface module are lifted along the direction of the pile leg.

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