Expandable net cage

Abstract

The utility model relates to the technical field of aquaculture, in particular to an expandable net cage which comprises a main frame body, a plurality of expandable frame bodies and a plurality of moving assemblies, the main frame body is of a polygon prism structure, and a buoyancy mechanism and a plurality of traction ropes are further arranged at the bottom of the main frame body; the expanding frame bodies are respectively arranged on the side walls of the main frame body, the expanding frame bodies are movably connected with the main frame body through the moving assemblies, each expanding frame body can be independently unfolded or folded, and the expanding net cage can move relative to the main cage body without being disassembled and is convenient to clean and maintain in use.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture, and more specifically, to an expandable net cage. Background Art

[0002] In aquaculture, cage culture is a widely used technical means. In the process of raising aquatic products, different sizes of cages are often required according to the type, quantity and breeding time of aquatic products. The size of traditional cages is fixed. When the breeding scale is expanded, it can only be satisfied by replacing new cages, which is troublesome and uneconomical. Therefore, a cage that can be expanded is needed.

[0003] The Chinese patent discloses a deep-water polyculture cage, which includes: a floating system, a fixed system, and several breeding systems; any breeding system includes several breeding units, and any breeding unit includes an inner frame, an outer frame, a connector, and a mesh. The inner frame is located on the inner side of the outer frame, and the two are connected by a connector to form a frame body, and the mesh is located on the bottom surface of the frame body and the sides around it; the fixed system fixes several breeding systems, and the fixed system includes a sinker and an anchoring device; the anchoring device includes a rope and an anchor; the floating system includes a floater, and the floater is located below the plane where the inner frame, the outer frame, and the connector are located. The deep-water polyculture cage of this scheme is suitable for aquaculture in deep water areas of freshwater bodies. During breeding, the deep-water polyculture cage can be expanded as needed, so that the idle water bodies in deep water areas can be fully utilized to carry out efficient breeding operations. However, when this cage needs to be cleaned, the cage units can only be dismantled and taken out, and then cleaned one by one, which is not convenient for daily maintenance of the cage during breeding. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and to provide an expandable net box, the expansion box body of which can be partially moved to facilitate cleaning and maintenance.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] Provided is an expandable net cage, comprising a main frame, a plurality of expansion frames and a plurality of movable components, wherein the main frame is a multi-prism structure, and a buoyancy mechanism and a plurality of traction ropes are also provided at the bottom of the main frame; the plurality of expansion frames are respectively mounted on the side walls of the main frame, and the expansion frames are movably connected to the main frame through the movable components, and each expansion frame can be independently unfolded or folded.

[0007] Through this setting, the expandable net cage includes two usage states. When a smaller net cage volume is required, the expansion frame is in a folded state, and the expansion frame in the folded state forms the side wall of the main frame. At this time, the volume of the entire net cage is only the inner volume of the main frame; when a larger net cage volume is required, the expansion frame is in an unfolded state, the expansion frame is connected with the main frame, and the expansion frame becomes the outer wall of the net cage. At this time, the volume of the entire net cage is the sum of the volume of the main frame and the unfolded expansion frame; when the expansion frame needs to be cleaned, the expansion frame can be moved upward by moving the assembly to expose the expansion frame to the water surface, thereby facilitating cleaning and maintenance of the expansion frame. Because the side walls of the main frame are composed of the expansion frame, the main frame does not need to be cleaned.

[0008] Preferably, the main frame includes a plurality of first rods and a second rod, the plurality of first rods are arranged parallel to each other, the bottoms of the plurality of first rods are fixedly connected by second rods to form a polygonal column frame structure, the expansion frame is installed between two adjacent first rods and is slidably connected to the first rods through a moving assembly, and the buoyancy mechanism and the traction rope are fixedly connected to the second rods.

[0009] With this arrangement, the buoyancy mechanism can provide upward buoyancy for the cage, the movable end of the traction rope can be fixed to the bottom of the water, and the buoyancy mechanism and the traction rope cooperate to ensure that the cage is suspended underwater.

[0010] Preferably, the moving component includes two groups of lifting mechanisms, which are respectively installed on two adjacent first rods and connected to both sides of the expansion frame. Two groups of lifting mechanisms belonging to different moving components are installed on one first rod and are slidably connected to it.

[0011] Preferably, the lifting mechanism includes a movable plate, a lifting motor and a cable. Two sliding grooves are provided on the first rod. The movable plate is slidably connected to the first rod through the sliding grooves. The two sides of the expansion frame are respectively fixedly connected to the movable plates in the two groups of lifting mechanisms. The lifting motor is provided at the top of the first rod and is connected to the movable plate through a cable. The lifting motor is used to retract and release the cable.

[0012] With this arrangement, when it is necessary to raise the expansion frame to clean the net box, the lifting motor rotates forward, causing the cable to be wrapped around the output shaft, shortening the cable section connected to the movable plate, thereby moving the expansion frame upward along the first rod, making it easier for staff to clean the expansion frame; when cleaning is completed, the lifting motor reverses, the cable is loosened from the output shaft, and the cable section connected to the movable plate becomes longer, thereby causing the expansion frame to descend along the first rod and return to normal use.

[0013] Preferably, the second rod is also provided with a net retracting and releasing mechanism, which includes a clockwork spring and a net-releasing shaft. The net-releasing shaft is sleeved in the second rod, and the net-releasing shaft is also sleeved with a clockwork spring. The inner free end of the clockwork spring is connected to the net-releasing shaft, and the outer free end of the clockwork spring is connected to the second rod; the net-releasing shaft is also provided with a first net, which can be wound around the net-releasing shaft. The second rod is provided with an opening, and the first net passes through the opening and is connected to the bottom of the expansion frame.

[0014] With this arrangement, when the expansion frame moves upward, the expansion frame drives the first net upward, and the first net wrapped around the net-releasing shaft is pulled out, while driving the net-releasing shaft to rotate relative to the second rod, and the clockwork spring deforms to accumulate energy; when the expansion frame is reset, the clockwork spring rebounds and drives the net-releasing shaft to rotate, and the net-releasing shaft drives the first net to retract, and the first net is rewound around the net-releasing shaft.

[0015] Preferably, the expansion frame includes two folding frames, an upper crossbeam and a lower crossbeam, and the two folding frames are respectively installed on two movable plates corresponding to the same group of movable components, and the upper crossbeam and the lower crossbeam are connected between the two folding frames; a second net is provided between the upper crossbeam and the main frame, and between the lower crossbeam and the main frame, and a third net is also provided between the upper crossbeam and the lower crossbeam.

[0016] Through this arrangement, the two folding frames respectively form the two sides of the expansion frame. When in the folded state, the two folding frames are folded into a rod structure, and the upper beam and the lower beam follow the folding frames and are attached to the side of the main frame. At this time, the expansion frame appears to be plate-shaped, the second net becomes the net wall of the main frame, and the third net is folded; when in the unfolded state, the two folding frames are spread open to form the side of the expansion frame, and the upper beam and the lower beam follow the movement of the folding frames, away from the main frame. The folding frames on both sides are combined with the upper beam and the lower beam to form a three-dimensional structure, and the third net becomes the outer net wall of the expansion frame, and the space inside the net box is increased.

[0017] Preferably, the folding frame includes an upper rotating rod, an upper folding rod, a lower rotating rod, a lower folding rod and a driving assembly, the driving assembly is installed on the movable plate, one end of the upper rotating rod is rotatably connected to one end of the upper folding rod and both are connected to the end of the upper cross beam, the other end of the upper rotating rod and the other end of the upper folding rod are rotatably connected to the driving assembly; one end of the lower rotating rod is rotatably connected to one end of the lower folding rod and both are connected to the end of the lower cross beam, the other end of the lower rotating rod and the other end of the lower folding rod are connected to the lower part of the driving assembly; the connection between the upper rotating rod and the driving assembly, the connection between the upper folding rod and the driving assembly, and the connection between the lower folding rod and the driving assembly are arranged in sequence from top to bottom along the driving assembly; the middle parts of the upper folding rod and the lower folding rod are provided with a hinge structure.

[0018] With this arrangement, when the folding frame is in a retracted state, the upper rotating rod and the lower rotating rod are both retracted to the side of the driving assembly and are parallel to the first rod; the middle part of the upper folding rod is bent and folded between the upper rotating rod and the driving assembly, the middle part of the lower folding rod is bent and folded between the lower rotating rod and the driving assembly, the upper cross beam and the lower cross beam follow the upper rotating rod and the lower rotating rod to rotate, and are both located beside the driving assembly; when the folding frame is in an unfolded state, the upper rotating rod and the lower rotating rod are both rotated to a position perpendicular to the first rod, the upper folding rod follows the upper rotating rod to rotate, and unfolds to a straight rod state, the upper rotating rod, the upper folding rod and the driving assembly form a triangular structure; the same is true for the lower folding rod, the lower rotating rod, the lower folding rod and the driving assembly form a triangular structure; the upper cross beam and the lower beam follow the rotating rod to rotate away from the driving assembly, and the upper cross beam, the lower beam and the two groups of folding frames together form a cavity structure.

[0019] Preferably, blocking sheets for limiting the rotation angle of the hinge mechanism are provided in the middle of the upper folding rod and the lower folding rod.

[0020] With this arrangement, when the folding frame is restored from the expanded state to the retracted state, the blocking sheet can limit the folding direction of the folding support rod, preventing the folding support rod from folding in the opposite direction, resulting in failure to complete the retracting action.

[0021] Preferably, the driving assembly includes a first gear, a second gear and a driving rack assembly, the first gear and the second gear are both rotatably connected to the movable plate, the first gear is also fixedly connected to the end of the upper rotating rod, the second gear is also fixedly connected to the end of the lower rotating rod, the driving rack assembly is respectively meshed with the first gear and the second gear, and is used to drive the first gear and the second gear to rotate.

[0022] With the left side of the first rod member on the rotating rod member as the observation side, through this arrangement, when it is necessary to unfold, the first gear rotates counterclockwise, causing the rotating support rod located at the upper end of the first rod member to rotate counterclockwise until it is perpendicular to the first rod member; the second gear rotates clockwise, causing the rotating support rod located at the lower end of the first rod member to rotate clockwise until it is perpendicular to the first rod member; at this time, the folding support rod follows the rotation of the rotating support rod and straightens, and the folding frame at the upper end of the first rod member and the lower end of the first rod member stretches out the third net clothing between the two; when it is necessary to retract, the first gear rotates clockwise and the second gear rotates counterclockwise, causing the rotating support rods located at the upper end and the lower end of the first rod member to rotate from perpendicular to the first rod member to parallel to the first rod member, thereby completing the retraction of the expansion frame.

[0023] Preferably, the driving rack assembly includes a first rack, a second rack, a third rack, a first sleeve, a second sleeve and a driving gear, the first rack, the second rack and the third rack are all slidably connected to the movable plate, and the driving gear is rotatably connected to the movable plate; the first rack and the second rack are arranged facing each other with the tooth surface of the third rack, the lower part of the first rack and the upper part of the third rack are meshed with the driving gear, and the lower part of the third rack is fixedly connected to the top of the second rack; the first sleeve and the second sleeve are both fixedly connected to the movable plate, and the first rack is movably inserted into the first sleeve, and the second rack and the third rack are movably inserted into the second sleeve, the end of the upper folding rod away from the upper rotating rod is rotatably connected to the first sleeve, and the end of the lower folding rod away from the lower rotating rod is rotatably connected to the second sleeve; the first rack is meshed with the first gear, and the second rack is meshed with the second gear.

[0024] As a common setting in the mechanical field, the driving gear is connected to a driving mechanism such as a motor, and the driving gear can rotate actively. When the folding frame needs to be retracted, the driving gear drives the first rack and the third rack to move away from each other. Under the same principle, the upper rotating rod and the lower rotating rod rotate and retract in opposite directions until the upper rotating rod and the lower rotating rod are parallel to the first support rod. The upper folding rod and the lower folding rod are folded under the same principle to complete the retraction.

[0025] Preferably, the main frame is a hexagonal structure, and there are six expansion frames in total, which are arranged around the main frame.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] (1) Through the foldable or unfoldable expansion frame, the cage can be expanded according to the use requirements, and the space after expansion is not separated from the space before expansion, so it has a wide range of applications.

[0028] (2) The cage structure of the expansion frame can be lifted up without disassembly, making it easy for users to perform maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic diagram of a folded state of a net-free expansion frame of an expandable net cage of the utility model;

[0030] Figure 2 This is a schematic diagram of the expanded state of a net-free expansion frame of an expandable net cage of the utility model;

[0031] Figure 3 This is a schematic diagram of a folded state of an expandable net box with a net expansion frame of the utility model;

[0032] Figure 4 This is a schematic diagram of an expandable net cage with a net expansion frame in an unfolded state according to the utility model;

[0033] Figure 5 This is a schematic diagram of the movement of an expansion frame of an expandable net cage of the utility model;

[0034] Figure 6 This is a schematic diagram of the structure of a net retracting and releasing mechanism of an expandable net box of the utility model;

[0035] Figure 7 This is a schematic diagram of the lifting mechanism structure of an expandable net box of the utility model;

[0036] Figure 8 This is a schematic diagram of the structure of a mobile component of an expandable net cage of the utility model;

[0037] Fig. 9 This is a schematic diagram of the unfolding structure of a folding frame of an expandable net cage of the utility model;

[0038] Fig.10 The utility model is a schematic diagram of the folding structure of a folding frame of an expandable net cage.

[0039] The illustrations are as follows:

[0040] 1. Main frame; 11. First rod; 12. Second rod; 13. Buoyancy mechanism; 14. Towing rope; 15. Net retracting and releasing mechanism; 151. Clockwork spring; 152. Net shaft; 153. First net; 2. Extension frame; 21. Folding frame; 211. Upper rotating rod; 212. Upper folding rod; 213. Lower rotating rod; 214. Lower folding rod; 215. Driving assembly; 2151. First gear; 2152. Second gear; 2153. First rack; 2154. Second rack; 2155. Third rack; 2156. Driving gear; 2157. First sleeve; 2158. Second sleeve; 22. Upper crossbeam; 23. Lower crossbeam; 24. Second net; 25. Third net; 3. Moving assembly; 31. Lifting mechanism; 311. Moving plate; 312. Lifting motor; 313. Cable. DETAILED DESCRIPTION

[0041] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0042] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] Example 1

[0044] like Figures 1 to 8 The figure shows the first embodiment of the expandable net cage of the utility model, which includes a main frame 1, a plurality of expansion frames 2 and a plurality of movable components 3. The main frame 1 is a multi-prism structure, and a buoyancy mechanism 13 and a plurality of traction ropes 14 are also provided at the bottom of the main frame 1; the plurality of expansion frames 2 are respectively arranged on the side walls of the main frame 1, and the expansion frames 2 are movably connected to the main frame 1 through the movable components 3, and the expansion frames 2 can be unfolded or folded separately.

[0045] Through this setting, the expandable net cage includes two usage states. When a smaller net cage volume is required, the expansion frame 2 is in a folded state, and the expansion frame 2 in the folded state forms the side wall of the main frame 1. At this time, the volume of the entire net cage is only the inner volume of the main frame 1; when a larger net cage volume is required, the expansion frame 2 is in an unfolded state, and the expansion frame 2 is connected to the main frame 1, and the expansion frame 2 becomes the outer wall of the net cage. At this time, the volume of the entire net cage is the sum of the volume of the main frame 1 and the unfolded expansion frame 2; when the expansion frame 2 needs to be cleaned, the expansion frame 2 can be moved upward by moving the moving component 3 to expose the expansion frame 2 to the water surface, thereby facilitating the cleaning and maintenance of the expansion frame 2. Because the side wall of the main frame 1 is composed of the expansion frame 2, the main frame 1 does not need to be cleaned.

[0046] As an embodiment of the present utility model, the main frame 1 includes a plurality of first rods 11 and a second rod 12. The plurality of first rods 11 are arranged parallel to each other. The bottoms of the plurality of first rods 11 are fixedly connected by the second rods 12 to form a polygonal column frame structure. The expansion frame 2 is installed between two adjacent first rods 11 and is slidably connected to the first rod 11 through a moving component 3. The buoyancy mechanism 13 and the traction rope 14 are fixedly connected to the second rod 12.

[0047] With this arrangement, the buoyancy mechanism 13 can provide upward buoyancy for the net cage, and the movable end of the traction rope 14 can be fixed to the bottom of the water. The buoyancy mechanism 13 cooperates with the traction rope 14 to ensure that the net cage is suspended underwater.

[0048] As an embodiment of the present utility model, the moving component 3 includes two groups of lifting mechanisms 31, which are respectively installed on two adjacent first rods 11 and connected to both sides of the expansion frame 2. Two groups of lifting mechanisms 31 belonging to different moving components 3 are installed on one first rod 11 and are slidably connected thereto.

[0049] As an embodiment of the present utility model, the lifting mechanism 31 includes a moving plate 311, a lifting motor 312 and a cable 313. Two sliding grooves are provided on the first rod 11. The moving plate 311 is slidably connected to the first rod 11 through the sliding grooves. The two sides of the expansion frame 2 are respectively fixedly connected to the moving plates 311 in the two groups of lifting mechanisms. The lifting motor 312 is provided at the top of the first rod 11 and is connected to the moving plate 311 through the cable 313. The lifting motor 312 is used to retract and release the cable 313.

[0050] With this arrangement, when it is necessary to raise the expansion frame 2 to clean the net box, the lifting motor 312 rotates forward, causing the cable 313 to be wound around the output shaft, and the section of the cable 313 connected to the movable plate 311 becomes shorter, thereby moving the expansion frame 2 up along the first rod 11, making it easier for the staff to clean the expansion frame 2; when the cleaning is completed, the lifting motor 312 reverses, the cable 313 loosens from the output shaft, and the section of the cable 313 connected to the movable plate 311 becomes longer, thereby causing the expansion frame 2 to descend along the first rod 11 and return to normal use.

[0051] As an embodiment of the utility model, a net retracting and releasing mechanism 15 is further provided on the second rod 12, and the net retracting and releasing mechanism 15 includes a clockwork spring 151 and a net-releasing shaft 152. The net-releasing shaft 152 is sleeved in the second rod 12, and the net-releasing shaft 152 is also sleeved with a clockwork spring 151, and the inner free end of the clockwork spring 151 is connected to the net-releasing shaft 152, and the outer free end of the clockwork spring 151 is connected to the second rod 12; a first net 153 is also provided on the net-releasing shaft 152, and the first net 153 can be wound around the net-releasing shaft 152, and the second rod 12 is provided with an opening, and the first net 153 passes through the opening and is connected to the bottom of the expansion frame 2.

[0052] Through this arrangement, when the expansion frame 2 moves upward, the expansion frame 2 drives the first net 153 to move upward, and the first net 153 wrapped around the net-releasing shaft 152 is pulled out, and at the same time drives the net-releasing shaft 152 to rotate relative to the second rod 12, and the clockwork spring 151 deforms and accumulates energy; when the expansion frame 2 is reset, the clockwork spring 151 rebounds and drives the net-releasing shaft 152 to rotate, and the net-releasing shaft 152 drives the first net 153 to retract, and the first net 153 is rewound around the net-releasing shaft 152.

[0053] Example 2

[0054] like Figures 1 to 5 , Fig. 9 , Fig.10 The second embodiment of an expandable net box of the utility model is shown. This embodiment is similar to the first embodiment, except that the structure of the expansion frame 2 is different.

[0055] As an embodiment of the utility model, the expansion frame 2 includes two folding frames 21, an upper crossbeam 22 and a lower crossbeam 23. The two folding frames 21 are respectively installed on two movable plates 311 corresponding to the same group of movable components 3. The upper crossbeam 22 and the lower crossbeam 23 are connected between the two folding frames 21. A second net 24 is provided between the upper crossbeam 22 and the main frame 1, and between the lower crossbeam 23 and the main frame 1. A third net 25 is also provided between the upper crossbeam 22 and the lower crossbeam 23.

[0056] Through this arrangement, the two folding frames 21 respectively form the two sides of the expansion frame 2. When in the folded state, the two folding frames 21 are folded into a rod structure, and the upper beam 22 and the lower beam 23 follow the folding frames 21 and are attached to the side of the main frame 1. At this time, the expansion frame 2 appears to be plate-shaped, the second net 24 becomes the net wall of the main frame 1, and the third net 25 is folded; when in the unfolded state, the two folding frames 21 are spread open to form the side of the expansion frame 2, and the upper beam 22 and the lower beam 23 follow the folding frames 21 to move away from the main frame 1. The folding frames 21 on both sides are combined with the upper beam 22 and the lower beam 23 to form a three-dimensional structure, and the third net 25 becomes the outer net wall of the expansion frame 2, and the space inside the net box is increased.

[0057] As an embodiment of the present invention, the folding frame 21 includes an upper rotating rod 211, an upper folding rod 212, a lower rotating rod 213, a lower folding rod 214 and a driving assembly 215. The driving assembly 215 is mounted on the movable plate 311. One end of the upper rotating rod 211 is rotatably connected to one end of the upper folding rod 212 and both are connected to the end of the upper crossbeam 22. The other end of the upper rotating rod 211 and the other end of the upper folding rod 212 are both rotatably connected to the driving assembly 215. One end of the lower rotating rod 213 is connected to the lower folding rod 214. One end is rotatably connected and is connected to the end of the lower cross beam 23, and the other end of the lower rotating rod 213 and the other end of the lower folding rod 214 are connected to the driving assembly 215; the connection between the upper rotating rod 211 and the driving assembly 215, the connection between the upper folding rod 212 and the driving assembly 215, the connection between the lower folding rod 214 and the driving assembly 215, and the connection between the lower rotating rod 213 and the driving assembly 215 are arranged in sequence from top to bottom along the driving assembly 215; the middle parts of the upper folding rod 212 and the lower folding rod 214 are provided with hinged structures.

[0058] By this arrangement, when the folding frame 21 is in the retracted state, the upper rotating rod 211 and the lower rotating rod 213 are both retracted to the side of the driving assembly 215 and are parallel to the first rod 11; the middle part of the upper folding rod 212 is bent and folded between the upper rotating rod 211 and the driving assembly 215, and the middle part of the lower folding rod 214 is bent and folded between the lower rotating rod 213 and the driving assembly 215. The upper crossbeam 22 and the lower crossbeam 23 rotate with the upper rotating rod 211 and the lower rotating rod 213, and are both located beside the driving assembly 215; when the folding frame 21 is in the unfolded state When the upper rotating rod 211 and the lower rotating rod 213 are rotated to a position perpendicular to the first rod 11, the upper folding rod 212 rotates with the upper rotating rod 211 and unfolds into a straight rod state, and the upper rotating rod 211, the upper folding rod 212 and the driving assembly 215 form a triangular structure; the lower folding rod 214 is similar, and the lower rotating rod, the lower folding rod 214 and the driving assembly 215 form a triangular structure; the upper beam 22 and the lower beam 23 follow the rotating rod to rotate away from the driving assembly 215, and the upper beam 22, the lower beam 23 and the two groups of folding frames 21 together form a cavity structure.

[0059] As an embodiment of the present invention, a blocking piece for limiting the rotation angle of the hinge mechanism is provided in the middle of the upper folding rod 212 and the lower folding rod 214 .

[0060] With this arrangement, when the folding frame 21 is restored from the expanded state to the retracted state, the blocking sheet can limit the folding direction of the folding support rod, preventing the folding support rod from folding in the opposite direction, resulting in failure to complete the retracting action.

[0061] As an implementation mode of the present utility model, the main frame 1 is a hexagonal structure, and there are six expansion frames 2 which are arranged around the main frame 1.

[0062] Example 3

[0063] like Figures 1 to 10 The third embodiment of an expandable cage of the utility model is shown. This embodiment is similar to the first embodiment, except that the structure of the driving component 215 is different.

[0064] As an embodiment of the utility model, the driving assembly 215 includes a first gear 2151, a second gear 2152 and a driving rack assembly. The first gear 2151 and the second gear 2152 are both rotatably connected to the movable plate 311. The first gear 2151 is also fixedly connected to the end of the upper rotating rod 211. The second gear 2152 is also fixedly connected to the end of the lower rotating rod 213. The driving rack assembly is respectively engaged with the first gear 2151 and the second gear 2152, and is used to drive the first gear 2151 and the second gear 2152 to rotate.

[0065] With the left side of the first rod 11 on the rotating rod as the observation side, through this arrangement, when it is necessary to unfold, the first gear 2151 rotates counterclockwise, so that the rotating support rod located at the upper end of the first rod 11 rotates counterclockwise until it is perpendicular to the first rod 11; the second gear 2152 rotates clockwise, so that the rotating support rod located at the lower end of the first rod 11 rotates clockwise until it is perpendicular to the first rod 11; at this time, the folding support rod follows the rotation of the rotating support rod and straightens, and the folding frame 21 at the upper end of the first rod 11 and the lower end of the first rod 11 open the third net 25 therebetween; when it is necessary to retract, the first gear 2151 rotates clockwise, and the second gear 2152 rotates counterclockwise, so that the rotating support rods located at the upper and lower ends of the first rod 11 are rotated from perpendicular to the first rod 11 to parallel to the first rod 11, thereby completing the retraction of the expansion frame 2.

[0066] As an embodiment of the utility model, the driving rack assembly includes a first rack 2153, a second rack 2154, a third rack 2155, a first sleeve 2157, a second sleeve 2158 and a driving gear 2156. The first rack 2153, the second rack 2154 and the third rack 2155 are all slidably connected to the movable plate 311, and the driving gear 2156 is rotatably connected to the movable plate 311; the first rack 2153, the second rack 2154 and the third rack 2155 are arranged to face each other with the tooth surface of the third rack 2155, the lower part of the first rack 2153 and the upper part of the third rack 2155 are meshed with the driving gear 2156, and the third rack 2153 is engaged with the driving gear 2156. The lower part of 55 is fixedly connected to the top of the second rack 2154; the first sleeve 2157 and the second sleeve 2158 are both fixedly connected to the movable plate 311, and the first rack 2153 is movably arranged in the first sleeve 2157, the second rack 2154 and the third rack 2155 are movably arranged in the second sleeve 2158, the end of the upper folding rod 212 away from the upper rotating rod 211 is rotatably connected to the first sleeve 2157, and the end of the lower folding rod 214 away from the lower rotating rod 213 is rotatably connected to the second sleeve 2158; the first rack 2153 is meshed with the first gear 2151, and the second rack 2154 is meshed with the second gear 2152.

[0067] As a common setting in the mechanical field, the driving gear 2156 is connected to a driving mechanism such as a motor, and the driving gear 2156 can rotate actively. With this setting, when it is necessary to unfold, the driving gear 2156 drives the first rack 2153 and the third rack 2155 to move toward each other. Because the second rack 2154 is fixedly connected to the third rack 2155, the first rack 2153 and the second rack 2154 move toward each other, and the movement directions of the first rack 2153 and the second rack 2154 are opposite. The first gear 2151 and the second gear 2152 rotate in opposite directions, and the upper rotating rod 211 and the lower rotating rod 213 also rotate in opposite directions to open, until the upper rotating rod 211 and the lower rotating rod 213 are both perpendicular to the first rod 11; during the rotation process, the upper folding rod 212 and the lower folding rod 214 rotate together. The first and second ends of the folding frame 21 are respectively connected to the first and second sleeves 2157 and 2158 for rotation and cannot move, and the other ends rotate with the upper rotating rod 211 and the lower rotating rod 213 respectively, and the upper folding rod 212 and the lower folding rod 214 are both unfolded from the folded state until they become a straight rod state; when the folding frame 21 needs to be retracted, the driving gear 2156 drives the first rack 2153 and the third rack 2155 to move away from each other. Under the same principle, the upper rotating rod 211 and the lower rotating rod 213 are rotated and retracted in opposite directions until the upper rotating rod 211 and the lower rotating rod 213 are parallel to the first support rod, and the upper folding rod 212 and the lower folding rod 214 are folded under the same principle to complete the retraction.

[0068] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An expandable cage, characterized in that: The invention comprises a main frame (1), a plurality of expansion frames (2) and a plurality of movable components (3); the main frame (1) is a multi-prism structure; a buoyancy mechanism (13) and a plurality of traction ropes (14) are also provided at the bottom of the main frame (1); the plurality of expansion frames (2) are respectively arranged on the side walls of the main frame (1), and the expansion frames (2) are movably connected to the main frame (1) through the movable components (3); and each expansion frame (2) can be independently unfolded or folded.

2. The expandable cage according to claim 1, characterized in that: The main frame (1) comprises a plurality of first rods (11) and second rods (12), wherein the plurality of first rods (11) are arranged parallel to each other, and the bottoms of the plurality of first rods (11) are fixedly connected via the second rods (12) to form a multi-prism frame structure; the expansion frame (2) is installed between two adjacent first rods (11) and is slidably connected to the first rods (11) via a moving assembly (3); and the buoyancy mechanism (13) and the traction rope (14) are fixedly connected to the second rods (12).

3. The expandable cage according to claim 2, characterized in that: The moving assembly (3) comprises two groups of lifting mechanisms (31), the two groups of lifting mechanisms (31) are respectively mounted on two adjacent first rods (11) and connected to two sides of the expansion frame (2); one first rod (11) is mounted with two groups of lifting mechanisms (31) belonging to different moving assemblies (3) and are both slidably connected thereto.

4. The expandable cage according to claim 3, characterized in that: The lifting mechanism (31) comprises a moving plate (311), a lifting motor (312) and a cable (313); two sliding grooves are provided on the first rod (11); the moving plate (311) is slidably connected to the first rod (11) via the sliding grooves; both sides of the expansion frame (2) are respectively fixedly connected to the moving plates (311) in the two sets of lifting mechanisms; the lifting motor (312) is provided at the top of the first rod (11) and is connected to the moving plate (311) via the cable (313); the lifting motor (312) is used to retract and release the cable (313).

5. The expandable cage according to claim 4, characterized in that: The second rod (12) is also provided with a net-retracting and releasing mechanism (15), and the net-retracting and releasing mechanism (15) comprises a spring (151) and a net-releasing shaft (152). The net-releasing shaft (152) is sleeved in the second rod (12), and the net-releasing shaft (152) is also sleeved with a spring (151). The inner free end of the spring (151) is connected to the net-releasing shaft (152), and the outer free end of the spring (151) is connected to the second rod (12); the net-releasing shaft (152) is also provided with a first net (153), and the first net (153) can be wound around the net-releasing shaft (152). The second rod (12) is provided with an opening, and the first net (153) passes through the opening and is connected to the bottom of the expansion frame (2).

6. An expandable net cage according to claim 4 or 5, characterized in that: The expansion frame (2) comprises two folding frames (21), an upper crossbeam (22) and a lower crossbeam (23); the two folding frames (21) are respectively mounted on two movable plates (311) corresponding to the same group of movable components (3); the upper crossbeam (22) and the lower crossbeam (23) are both connected between the two folding frames (21); a second net (24) is provided between the upper crossbeam (22) and the main frame (1), and between the lower crossbeam (23) and the main frame (1); and a third net (25) is also provided between the upper crossbeam (22) and the lower crossbeam (23).

7. The expandable cage according to claim 6, characterized in that: The folding frame (21) comprises an upper rotating rod (211), an upper folding rod (212), a lower rotating rod (213), a lower folding rod (214) and a driving assembly (215); the driving assembly (215) is mounted on the movable plate (311); one end of the upper rotating rod (211) is rotatably connected to one end of the upper folding rod (212) and both are connected to the end of the upper crossbeam (22); the other end of the upper rotating rod (211) and the other end of the upper folding rod (212) are rotatably connected to the driving assembly (215); one end of the lower rotating rod (213) is rotatably connected to one end of the lower folding rod (214); The upper rotating rod (211) and the driving assembly (215) are connected to each other and are both connected to the end of the lower cross beam (23); the other end of the lower rotating rod (213) and the other end of the lower folding rod (214) are both connected to the driving assembly (215); the connection between the upper rotating rod (211) and the driving assembly (215), the connection between the upper folding rod (212) and the driving assembly (215), the connection between the lower folding rod (214) and the driving assembly (215), and the connection between the lower rotating rod (213) and the driving assembly (215) are arranged in sequence from top to bottom along the driving assembly (215); and the middle parts of the upper folding rod (212) and the lower folding rod (214) are both provided with hinge structures.

8. The expandable cage according to claim 7, characterized in that: The middle parts of the upper folding rod (212) and the lower folding rod (214) are both provided with blocking plates for limiting the rotation angle of the hinge mechanism.

9. The expandable cage according to claim 8, characterized in that: The driving assembly (215) comprises a first gear (2151), a second gear (2152) and a driving rack assembly. The first gear (2151) and the second gear (2152) are both rotatably connected to the movable plate (311). The first gear (2151) is also fixedly connected to the end of the upper rotating rod (211). The second gear (2152) is also fixedly connected to the end of the lower rotating rod (213). The driving rack assembly is respectively meshed with the first gear (2151) and the second gear (2152), and is used to drive the first gear (2151) and the second gear (2152) to rotate.

10. The expandable cage according to claim 9, characterized in that: The driving rack assembly comprises a first rack (2153), a second rack (2154), a third rack (2155), a first pipe sleeve (2157), a second pipe sleeve (2158) and a driving gear (2156); the first rack (2153), the second rack (2154) and the third rack (2155) are all slidably connected to the movable plate (311); the driving gear (2156) is rotatably connected to the movable plate (311); the first rack (2153), the second rack (2154) and the third rack (2155) are arranged with their tooth surfaces facing each other; the lower part of the first rack (2153) and the upper part of the third rack (2155) are both meshed with the driving gear (2156); the lower part of the third rack (2155) is ... The first pipe sleeve (2157) and the second pipe sleeve (2158) are both fixedly connected to the movable plate (311), and the first rack (2153) is movably inserted into the first pipe sleeve (2157), and the second rack (2154) and the third rack (2155) are movably inserted into the second pipe sleeve (2158); the end of the upper folding rod (212) away from the upper rotating rod (211) is rotatably connected to the first pipe sleeve (2157), and the end of the lower folding rod (214) away from the lower rotating rod (213) is rotatably connected to the second pipe sleeve (2158); the first rack (2153) is meshed with the first gear (2151), and the second rack (2154) is meshed with the second gear (2152).

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