Oyster breeding cage with adjustable cage body specification and size

Abstract

The utility model relates to the technical field of oyster breeding, in particular to an oyster breeding cage with adjustable cage body specification, which comprises a floating plate, a breeding cage body and a rotating shaft which are sequentially connected, the breeding cage body comprises a first cage body and a second cage body, and the first cage body and the second cage body abut against each other to form a breeding space. An adjusting structure is arranged between the first cage body and the second cage body, sliding connecting structures are arranged on the two sides of the first cage body, when the adjusting structure controls the first cage body and the second cage body to abut against each other, the breeding space is in the minimum state, and when the first cage body and the second cage body are away from each other, the breeding space is gradually increased. When the second cage body moves to the maximum guide range of the sliding connection structure, the breeding space is the largest; the first cage body, the second cage body, the adjusting structure and the sliding connecting structure are arranged, so that the culture requirements of oysters in different growth stages are met, and the applicability and flexibility of the culture cage body are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oyster culture technical field, concretely relates to a cage size adjusting formula's oyster culture cage. BACKGROUND

[0002] In the oyster culture field, with the growth process of oyster from seedling to mature individual, its demand for culture space is also changing. The traditional culture method usually adopts fixed size culture cage, which leads to the crowded culture space as the oyster volume increases, limiting the normal growth and development of oyster in the initial stage of oyster growth, although the cage provides enough protection space. In the traditional culture process, oysters often need to be transferred to larger culture cages regularly, which not only increases the labor intensity and improves the culture cost, but also may cause unnecessary stress and harm to oysters. SUMMARY

[0003] In view of the above problems, a cage size adjusting formula oyster culture cage is provided, by setting first cage, second cage, adjusting structure and sliding connection structure, with the change of oyster seedling growth stage, the culture space of culture cage is adjusted accordingly, so as to meet the culture demand of oysters in different growth stages, improve the applicability and flexibility of culture cage.

[0004] To solve the problems in the prior art, the utility model provides a cage size adjusting formula oyster culture cage, which comprises a floating plate, a culture cage and a rotating shaft connected in sequence, the culture cage comprises a first cage and a second cage which are parallel to each other, the first cage and the second cage abut each other to form a culture space with an opening for culturing oysters, an adjusting structure is arranged between the first cage and the second cage for adjusting the size of the culture space, sliding connection structures are arranged on both sides of the first cage for guiding the movement of the second cage, when the adjusting structure controls the first cage and the second cage to abut each other, the culture space is in the minimum state, when the first cage and the second cage are moving away from each other, the culture space gradually increases, when the second cage moves to the maximum guiding range of the sliding connection structure, the culture space is maximum.

[0005] Preferably, the adjusting structure comprises two space expansion components for adjusting the size of the culture space by folding and unfolding themselves and a fixing structure for fixing the space expansion components in the contracted state.

[0006] Preferably, the space expansion component comprises a connecting plate and two expansion plates hinged to both sides of the connecting plate, the two expansion plates are hinged to the first cage and the second cage respectively, and the connecting plate is within the coverage range of the first cage and the second cage.

[0007] Preferably, the fixing structure comprises two fixing assemblies, each of the fixing assemblies comprises two docking blocks mounted on two connecting plates respectively, the docking blocks are provided with docking jacks, and the same side of the two docking blocks is provided with a docking plate, and the two ends of the docking plate are provided with the docking jacks which can be matched with the docking jacks.

[0008] Preferably, the fixing structure further comprises a synchronous assembly arranged between the two fixing assemblies and connected with the two docking plates of the two fixing assemblies.

[0009] Preferably, the adjusting structure further comprises a telescopic limiting assembly arranged between and connected with the two space expansion assemblies, and the telescopic limiting assembly is used to limit the maximum expansion space of the two space expansion assemblies.

[0010] Preferably, the sliding connection structure comprises a plurality of guide structures, the plurality of guide structures are arranged at equal intervals along the length direction of the first cage body, the guide structure comprises a second guide rod fixedly connected with the first cage body and extending towards the second cage body, the sliding seat is slidably connected with the second guide rod, and the sliding seat is connected with the second cage body.

[0011] Preferably, the sliding connection structure further comprises a locking structure arranged on the side wall of the second cage body and fixedly connected with the sliding seat in the guide structure, and the locking structure is used to lock the position of the sliding seat on the second guide rod.

[0012] The beneficial effects of the present application compared with the prior art are:

[0013] The first cage body, the second cage body, the adjusting structure and the sliding connection structure are arranged, in the initial growth stage of the oyster seedlings, the first cage body and the second cage body abut against each other, a relatively closed and stable small space is provided, which helps to protect the fragile oyster seedlings from the interference of external wind and waves, natural enemies and other adverse factors, with the growth of the oysters, the distance between the first cage body and the second cage body is increased through the adjusting structure, the movement of the second cage body is guided through the sliding connection structure, the stability and controllability of the expansion process of the breeding space are ensured, the adjustment of the breeding space is more convenient and rapid, with the change of the growth stage of the oyster seedlings, the breeding space of the breeding cage is adjusted correspondingly, so that the breeding demand of the oysters in different growth stages is met, and the applicability and flexibility of the breeding cage are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of a cage size adjusting type oyster breeding cage.

[0015] Figure 2 It is a perspective view of a first cage body, a second cage body, an adjusting structure and a sliding connection structure in a cage size adjusting type oyster breeding cage.

[0016] Figure 3 is a cage size adjusting type of oyster cage, which is a perspective view of a first cage body, a second cage body, a space expansion assembly and a telescopic limiting assembly.

[0017] Figure 4 is a cage size adjusting type of oyster cage, which is a perspective view of a first cage body, a space expansion assembly and a fixing structure.

[0018] Figure 5 is a cage size adjusting type of oyster cage, which is a perspective view of a connecting plate, a fixing assembly and a synchronous assembly.

[0019] Figure 6 is Figure 5 is a partial enlarged view of A in the figure.

[0020] Figure 7 is a cage size adjusting type of oyster cage, which is a perspective view of a butt joint plate and a synchronous assembly.

[0021] Figure 8 is a cage size adjusting type of oyster cage, which is a perspective view of a space expansion assembly and a telescopic limiting assembly.

[0022] Figure 9 is a cage size adjusting type of oyster cage, which is a perspective view of a first cage body and a sliding connection structure.

[0023] Figure 10 is a cage size adjusting type of oyster cage, which is a perspective view of a second guide rod, a sliding seat, a second driving plate and a fixed insertion rod.

[0024] The figure is marked: 1, first cage body; 2, second cage body; 3, adjusting structure; 31, space expansion assembly; 311, connecting plate; 312, expansion plate; 32, fixing structure; 321, fixing assembly; 3211, butt joint block; 3212, butt joint plate; 3213, butt joint insertion rod; 322, synchronous assembly; 3221, first guide rod; 3222, spring; 3223, first moving block; 3224, first driving plate; 33, telescopic limiting assembly; 331, limiting sleeve; 332, limiting shaft; 333, limiting pin; 4, sliding connection structure; 41, guide structure; 411, second guide rod; 412, sliding seat; 42, locking structure; 421, fixed seat; 422, second driving plate; 423, fixed insertion rod; 424, synchronous pull rod. DETAILED DESCRIPTION

[0025] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0026] Referring to Figures 1 to 10 As shown in the figure: a cage size adjusting type oyster culture cage, including sequentially connected floating plate, culture cage and rotating shaft, the culture cage includes mutually parallel first cage 1 and second cage 2, the first cage 1 and the second cage 2 abut each other to form a culture space with an opening and for culturing oysters, the opening is provided with an end cover plate, the first cage 1 and the second cage 2 are provided with an adjusting structure 3 for adjusting the size of the culture space, both sides of the first cage 1 are provided with sliding connection structure 4 for guiding the movement of the second cage 2, when the adjusting structure 3 controls the first cage 1 and the second cage 2 to abut each other, the culture space is in the minimum state, when the first cage 1 and the second cage 2 are in the process of moving away from each other, the culture space gradually increases, when the second cage 2 moves to the maximum guiding range of the sliding connection structure 4, the culture space is maximum.

[0027] When the oyster seed is in the seedling state, the volume of a single oyster seed is small, and a small culture space can realize the culture of a large number of oyster seeds, with the growth of the oyster seed, the volume of a single oyster seed increases, resulting in the oyster seed crowded in a small culture cage, at this time, the grown oyster seed needs to be transferred to a larger culture cage, for this, the first cage 1, the second cage 2, the adjusting structure 3 and the sliding connection structure 4 are arranged, the oyster seed is relatively fragile in the initial growth stage, and the adaptability to the external environment is weak, the first cage 1 and the second cage 2 abut each other, at this time, the culture space is small, which can provide a relatively stable environment for the oyster seed, reduce the interference and damage of external factors such as wind and waves, natural enemies and the like on the oyster seed, but with the growth of the oyster seed, the demand for space and food of the oyster seed will also gradually increase, and the small culture space may not meet the growing needs of the oyster seed, which limits the normal growth and development of the oyster seed, at this time, the adjusting structure 3 adjusts the distance between the first cage 1 and the second cage 2, the sliding connection structure 4 guides the movement of the second cage 2, so that the second cage 2 translates away from the first cage 1, resulting in the culture space surrounded by the first cage 1 and the second cage 2 increasing, at this time, the growth space of the oyster seed increases, without the need to transfer the oyster seed to a larger culture cage, which reduces the labor intensity and cost in the culture process, through the cooperation of the first cage 1, the second cage 2, the adjusting structure 3 and the sliding connection structure 4, the culture cage can adjust the size of the culture space according to the growth stage of the oyster seed, so as to meet the culture needs of the oyster at different growth stages, improve the applicability and flexibility of the culture cage.

[0028] Referring to Figure 2As shown: the adjusting structure 3 includes two space expansion components 31 which can adjust the size of the breeding space by themselves and a fixing structure 32 which is used for fixing the space expansion components 31 in the contracted state.

[0029] In the initial growth stage of the oyster seed, the oyster seed only needs a small growth space, at this time, the two space expansion components 31 are in the contracted state, the fixing structure 32 fixes the two space expansion components 31 in the contracted state, prevents the space expansion components 31 from being unfolded due to the wind and waves, and guarantees the safe growth environment of the oyster seed, when the breeding space surrounded by the first cage body 1 and the second cage body 2 cannot meet the growth of the oyster seed, the fixing structure 32 loses the fixing effect on the two space expansion components 31, the two space expansion components 31 gradually unfold following the movement of the second cage body 2, the two space expansion components 31 fill the space between the first cage body 1 and the second cage body 2, so that the first cage body 1, the second cage body 2 and the two space expansion components 31 surround a new larger breeding space, which helps to reduce the growth retardation of the oyster seed caused by space limitation, thereby improving the overall growth efficiency and breeding benefit of the oyster seed.

[0030] Referring to Figure 2 and Figure 3 As shown: the space expansion component 31 includes a connecting plate 311 and two expansion plates 312 which are respectively hinged to the two sides of the connecting plate 311, the two expansion plates 312 are respectively hinged to the first cage body 1 and the second cage body 2, and the connecting plate 311 is within the coverage range of the first cage body 1 and the second cage body 2.

[0031] When the space expansion component 31 is in the contracted state, the two expansion plates 312 in the space expansion component 31 are in the state of mutual parallel and adhesion, and the two space expansion components 31 are within the breeding space surrounded by the first cage body 1 and the second cage body 2, when it is needed to expand the breeding space, the second cage body 2 starts to move away from the first cage body 1, since the second cage body 2 is hinged to one of the expansion plates 312, the movement of the second cage body 2 will drive the expansion plate 312 to move, at the same time, due to the existence of the connecting plate 311, the moving expansion plate 312 further drives the other expansion plate 312 which is hinged to the first cage body 1 to move synchronously through the transmission effect of the connecting plate 311, in this process, the included angle between the two expansion plates 312 gradually tends to 180 degrees, effectively filling the gap between the first cage body 1 and the second cage body 2 caused by the increase of the distance, since the two expansion plates 312 in the space expansion component 31 can be contracted and expanded, and the space expansion component 31 can be completely contracted within the breeding space in the contracted state of the two expansion plates 312, the space occupied by the oyster breeding cage is avoided to be increased.

[0032] Referring to Figure 4 , Figure 5 and Figure 6As shown: the fixing structure 32 comprises two fixing assemblies 321, the fixing assembly 321 comprises two docking blocks 3211 respectively mounted on the two connecting plates 311, the docking block 3211 is provided with a docking jack, and the same side of the two docking blocks 3211 is provided with a docking plate 3212, both ends of the docking plate 3212 are provided with a docking plug rod 3213, and the docking plug rod 3213 can be matched with the docking jack.

[0033] The oyster seed needs a small breeding space in the initial growth stage, at this time, the two space expansion assemblies 31 need to be in the contracted state, if the two space expansion assemblies 31 are not fixed, the second cage body 2 is affected by wind and wave, the second cage body 2 will exert force on the expansion plate 312 connected thereto, causing the space expansion assembly 31 to expand, changing the growth space of the oyster seed, therefore, the two space expansion assemblies 31 in the contracted state need to be fixed, when the two expansion plates 312 in the space expansion assembly 31 are in the state of being close to each other, the docking jack on the surface of the docking block 3211 mounted on the connecting plate 311 corresponds to the docking plug rod 3213 at the upper end of the docking plate 3212, then the docking plate 3212 is pushed to move towards the docking block 3211, the two docking plug rods 3213 at both ends of the docking plate 3212 are respectively inserted into the docking jacks on the two docking blocks 3211, so that the positions between the two connecting plates 311 in the two space expansion assemblies 31 are fixed, therefore, the connecting plate 311 cannot be displaced, the two space expansion assemblies 31 cannot be expanded, and the two fixing assemblies 321 can further reinforce the state of the space expansion assembly 31, thereby avoiding uncontrolled expansion of the space expansion assembly, and maintaining the growth space of the oyster seed unchanged.

[0034] Referring to Figure 5 and Figure 7 As shown: the fixing structure 32 further comprises a synchronous assembly 322 arranged between the two fixing assemblies 321, and the synchronous assembly 322 is connected with the two docking plates 3212 in the two fixing assemblies 321.

[0035] Specifically, the synchronous assembly 322 comprises a first guide rod 3221, a spring 3222 and two first moving blocks 3223, the first guide rod 3221 is perpendicular to the connecting line of the two fixing assemblies 321, the spring 3222 is sleeved on the middle part of the first guide rod 3221, the two first moving blocks 3223 are respectively arranged at both ends of the spring 3222 and are in sliding connection with the first guide rod 3221, both ends of the first moving block 3223 are hingedly provided with two first driving plates 3224, and the two first driving plates 3224 are hingedly connected with the two docking plates 3212 respectively.

[0036] The length of the breeding cage is relatively long. When the operator adjusts the state of the two space expansion assemblies 31 through the fixing structure 32, the operator needs to operate the two fixing assemblies 321 respectively. In this process, the operator is convenient to operate the fixing assembly 321 near the operator, but it is inconvenient to operate the fixing assembly 321 far away from the operator. Therefore, the synchronous assembly 322 is introduced to optimize the operation process. When the space expansion assembly 31 is in the retracted state, the spring 3222 exerts a force on the two first moving blocks 3223 to separate each other, so as to drive the two first driving plates 3224 connected with the first moving blocks 3223 to exert a pulling force on the two abutting plates 3212 in the opposite direction, so as to ensure that the abutting plates 3212 are tightly abutted on the corresponding abutting blocks 3211. When it is needed to expand the space expansion assembly 31, the operator pulls one of the abutting plates 3212 to separate the abutting plate 3212 from the corresponding two abutting blocks 3211. In the movement process of the abutting plate 3212, the abutting plate 3212 drives the two first moving blocks 3223 to move close to each other through the two first driving plates 3224, and the two first moving blocks 3223 further compress the spring 3222. At the same time, the two first moving blocks 3223 drive the abutting plate 3212 in the fixing assembly 321 away from the operator to move through the other two first driving plates 3224, so that the abutting plate 3212 is also separated from the corresponding abutting block 3211. This ensures that the two fixing assemblies 321 can simultaneously release the fixing constraint on the space expansion assembly 31, so as to realize the simultaneous control of the two fixing assemblies 321, reduce the operation steps of the operator, and improve the efficiency of the state switching of the space expansion assembly 31.

[0037] Referring to Figure 4 and Figure 8 As shown in the figure: the adjusting structure 3 further comprises a telescopic limiting assembly 33 arranged between and connected with the two space expansion assemblies 31. The telescopic limiting assembly 33 is used to limit the maximum expansion space of the two space expansion assemblies 31.

[0038] Specifically, the telescopic limiting assembly 33 comprises a limiting sleeve 331, a limiting shaft 332 and a limiting pin 333. One end of the limiting sleeve 331 is connected with the connecting plate 311 in one of the space expansion assemblies 31. One end of the limiting shaft 332 is connected with the connecting plate 311 in the other space expansion assembly 31. The other end of the limiting shaft 332 is slidably arranged in the limiting sleeve 331. The limiting pin 333 is arranged at the other end of the limiting shaft 332. The two ends of the limiting pin 333 pass through and extend out of the limiting sleeve 331. The limiting sleeve 331 is provided with a sliding groove matched with the limiting pin 333.

[0039] In the process of moving the second cage 2 away from the first cage 1, the two space expansion assemblies 31 are synchronously expanded. If the included angle between the two expansion plates 312 in the space expansion assembly 31 is too large, when the space expansion assembly 31 is reset, the force acting on the connecting plate 311 between the two expansion plates 312 and pointing to the middle of the first cage 1 will be reduced. Therefore, the telescopic limiting assembly 33 is arranged. As the two connecting plates 311 gradually move away from each other, the limiting sleeve 331 and the limiting shaft 332 driven by the two connecting plates 311 respectively slide relative to each other. When the limiting pin 333 at the end of the limiting shaft 332 and the end of the limiting sleeve 331 slide into contact, the further movement of the limiting shaft 332 in the limiting sleeve 331 is blocked, and thus the two connecting plates 311 cannot continue to separate, the included angle between the two expansion plates 312 is fixed, and the two expansion plates 312 form a V-shaped structure towards the middle of the first cage 1, ensuring that the connecting plate 311 can be subjected to a large enough force pointing to the middle of the first cage 1. The maximum expansion range of the space expansion assembly 31 is effectively limited by the telescopic limiting assembly 33, thereby avoiding the difficulty of resetting due to excessive expansion of the two expansion plates 312.

[0040] Referring to Figure 2 and Figure 9 , the sliding connection structure 4 includes a plurality of guide structures 41, which are arranged at equal intervals along the length direction of the first cage 1. The guide structure 41 includes a second guide rod 411 fixedly connected with the first cage 1, and the second guide rod 411 extends towards the second cage 2. A sliding seat 412 is slidably connected with the second guide rod 411, and the sliding seat 412 is connected with the second cage 2.

[0041] When the second cage 2 moves away from the first cage 1, the second cage 2 drives a plurality of sliding seats 412 connected therewith to slide along the respective second guide rods 411. During this process, the plurality of second guide rods 411 collectively play a guiding role in the moving direction of the second cage 2, ensuring that the second cage 2 can move along the axis direction of the second guide rod 411. When the second cage 2 is adjusted to the desired position, the second guide rod 411 not only continues to limit the moving direction of the second cage 2, but also provides a constraint on the second cage 2 in the direction perpendicular to the axis direction of the second guide rod 411. This means that when the second cage 2 is subjected to external forces such as waves, the second cage 2 will be limited to move in the direction along the axis of the second guide rod 411, and cannot move in the direction perpendicular to the axis. This effectively avoids the second cage 2 driving the oyster larvae inside to move in the direction perpendicular to the axis of the second guide rod 411 under the action of external forces, thereby protecting the stability and safety of the oyster larvae.

[0042] Referring to Figure 2 , Figure 9 andFigure 10 The sliding connection structure 4 further comprises a locking structure 42 arranged on the side wall of the second cage 2, and the locking structure 42 is fixedly connected with the sliding seat 412 in the guide structure 41, and the locking structure 42 is used for locking the position of the sliding seat 412 on the second guide rod 411.

[0043] Specifically, the locking structure 42 comprises a fixed seat 421, a plurality of second driving plates 422 and a synchronous pull rod 424, both ends of the fixed seat 421 are fixedly connected with the second cage 2, and the fixed seat 421 covers all the sliding seats 412, the plurality of second driving plates 422 are arranged on one side of the sliding seat 412 in the plurality of guide structures 41 respectively, the middle part of the second driving plate 422 is slidably connected with the fixed seat 421, one end of the second driving plate 422 is provided with a fixed insertion rod 423, the synchronous pull rod 424 is connected with the plurality of second driving plates 422, a plurality of first fixed insertion holes are arranged on the second guide rod 411, and a second fixed insertion hole is arranged on the sliding seat 412, when one of the first fixed insertion holes on the second guide rod 411 is coaxial with the second fixed insertion hole, the fixed insertion rod 423 is inserted into the first fixed insertion hole and the second fixed insertion hole.

[0044] The second guide rod 411 can limit the second cage 2 from moving in the direction perpendicular to the axis of the second guide rod 411, but the second cage 2 can still move along the axis direction of the second guide rod 411, so that the breeding space can change with external forces such as water waves, therefore, the locking structure 42 is arranged, the second cage 2 moves to drive the sliding seat 412 to move, when the second fixed insertion hole on the sliding seat 412 corresponds to one of the first fixed insertion holes on the second guide rod 411, the staff drives all the fixed insertion rods 423 to move through the synchronous pull rod 424, so that the fixed insertion rod 423 is inserted into the first fixed insertion hole and the second fixed insertion hole, at this time, the sliding seat 412 cannot move along the axis direction of the second guide rod 411, therefore, the second cage 2 cannot move along the axis direction of the second guide rod 411, so that the size of the fixed breeding space is realized, and a stable living environment is provided for the oyster seedlings.

[0045] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A cage for cultivating oysters, which is capable of adjusting the size of the cage, comprising a float, a cultivating cage and a rotating shaft connected in sequence, characterized in that, The breeding cage comprises a first cage (1) and a second cage (2) which are parallel to each other, the first cage (1) and the second cage (2) abut each other to form a breeding space with an opening and used for breeding oysters, an adjusting structure (3) is arranged between the first cage (1) and the second cage (2) and used for adjusting the size of the breeding space, sliding connection structures (4) are arranged on both sides of the first cage (1) and used for guiding the movement of the second cage (2), when the adjusting structure (3) controls the first cage (1) and the second cage (2) to abut each other, the breeding space is in a minimum state, when the first cage (1) and the second cage (2) are moving away from each other, the breeding space gradually increases, when the second cage (2) moves to the maximum guiding range of the sliding connection structures (4), the breeding space is maximum.

2. The oyster cage according to claim 1, wherein The adjusting structure (3) comprises two space expansion assemblies (31) which are used for adjusting the size of the breeding space by being retracted and expanded and a fixing structure (32) which is used for fixing the space expansion assemblies (31) in a retracted state.

3. The oyster cage according to claim 2, wherein The space expansion assembly (31) comprises a connecting plate (311) and two expansion plates (312) which are hingedly connected to both sides of the connecting plate (311), the two expansion plates (312) are hingedly connected to the first cage (1) and the second cage (2) respectively, and the connecting plate (311) is within the coverage range of the first cage (1) and the second cage (2).

4. The oyster cage according to claim 2, wherein The fixing structure (32) comprises two fixing assemblies (321), the fixing assembly (321) comprises two butt blocks (3211) which are mounted on the two connecting plates (311) respectively, the butt blocks (3211) are provided with butt insertion holes, the same side of the two butt blocks (3211) is provided with a butt plate (3212), the two ends of the butt plate (3212) are provided with butt insertion rods (3213), and the butt insertion rods (3213) can be butt-connected with the butt insertion holes.

5. The oyster cage according to claim 4, wherein The fixing structure (32) further comprises a synchronous assembly (322) which is arranged between the two fixing assemblies (321) and connected with the two butt plates (3212) of the two fixing assemblies (321).

6. The oyster cage according to claim 2, wherein The adjusting structure (3) further comprises a telescopic limiting assembly (33) which is arranged between and connected with the two space expansion assemblies (31) and used for limiting the maximum expansion space of the two space expansion assemblies (31).

7. The oyster cage according to claim 1, wherein The sliding connection structure (4) comprises a plurality of guide structures (41), the plurality of guide structures (41) are arranged at equal intervals along the length direction of the first cage (1), the guide structure (41) comprises a second guide rod (411) which is fixedly connected with the first cage (1) and extends towards the second cage (2), a sliding seat (412) is slidably connected with the second guide rod (411), and the sliding seat (412) is connected with the second cage (2).

8. The cage size adjustable oyster farming cage according to claim 7, wherein The sliding connection structure (4) further comprises a locking structure (42) arranged on the side wall of the second cage body (2), and the locking structure (42) is fixedly connected with the sliding seat (412) in the guide structure (41), and the locking structure (42) is used for locking the position of the sliding seat (412) on the second guide rod (411).

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