A multi-hole shelter device for eriocheir sinensis culture
By designing a multi-cavity covering device with detachable cavities and adjustable covers, the problem of insufficient cavities in mud crab farming was solved. This enabled flexible expansion and stable connection of the covering device, improving the utilization rate of mud crab habitat and the safety of the growth environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO UNIV
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-14
AI Technical Summary
In existing mud crab farming equipment, the number of burrows is fixed and cannot be flexibly adjusted. This results in the mud crabs' habitat space requirements not being met at different growth stages or under high-density farming conditions, affecting their survival rate and growth performance.
A multi-cavity shelter device is designed, comprising a detachable cavity body and an adjustable shelter cover. The number and space of the cavities can be flexibly adjusted through slide rails, layered plates and connecting components, providing upper and lower double-cavity cavities and a stable connection to adapt to different aquaculture needs.
It enables flexible expansion and stable connection of the sheltering device, improves space utilization, adapts to the habitat needs of different growth stages and high-density aquaculture, and enhances the survival rate of mud crabs and the safety of their growth environment.
Smart Images
Figure CN224482602U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mud crab farming technology, specifically a multi-hole covering device for mud crab farming. Background Technology
[0002] The mud crab (Scylla serrata) has unique living habits. It naturally prefers concealed environments, often inhabiting burrows and crevices in the intertidal zone. In artificial breeding environments, without suitable shelter, mud crabs experience a series of adverse reactions due to environmental stress. Firstly, mud crabs have a strong sense of territory and are aggressive; when breeding densities are high, cannibalism is likely, leading to decreased survival rates and economic losses for breeders. Secondly, the lack of shelter exposes them to prolonged exposure to strong light and water currents, affecting their normal growth and molting.
[0003] The number of burrows inside existing devices is mostly fixed, making it impossible to flexibly adjust according to actual farming needs. This makes it difficult to adapt to the dynamic needs of mud crabs for habitat as they grow at different stages or farming densities change. At the same time, the limited number of burrows in a single device means that in high-density farming scenarios, it is insufficient to provide enough independent shelter for a sufficient number of mud crabs, failing to effectively alleviate fighting among them and thus affecting farming results. Utility Model Content
[0004] The purpose of this invention is to provide a multi-hole covering device for the farming of mud crabs. By setting up detachable cave bodies and adjusting the number of cave bodies in the covering, the problem of the small number of caves in traditional methods is solved.
[0005] To address the problems of existing technologies, this utility model provides a multi-hole sheltering device for mud crab farming, characterized by comprising: a shelter cover that can be placed in a pond to provide a safe living space for the mud crabs; and a cave assembly having several caves that can be inserted into the shelter cover. The cave assembly includes a cave body and slide rails arranged on the upper and lower sides of the cave body along its length. The shelter cover has a layered plate at its center along its width that divides it into upper and lower layers. The shelter cover also has a vertical partition at its center that divides it into front and rear cavities. The layered plate and the shelter cover are also provided with grooves that cooperate with the slide rails.
[0006] Preferably, each cave is divided into two cavities, one above the other, for the blue crabs to live in.
[0007] Preferably, the top and bottom of the shield are provided with a number of insertion holes, and each insertion hole has a number of limiting blocks on its sidewall.
[0008] Preferably, a plug is fixed on one side of the shield, and a limiting member that can cooperate with the plug is fixed on the other side of the shield. When the two shields are joined together, the plug can be inserted into the limiting member and connected by a pin.
[0009] Preferably, the bottom of the shield is provided with a plurality of threaded holes, and the bottom of the shield is also provided with a fixing component that can engage with the threaded holes.
[0010] Preferably, the fixing component includes a vertically arranged insert rod at the bottom of the shield, and the top of the insert rod is also provided with an insert rod that mates with a threaded hole, and the outside of the insert rod is also provided with several cutting blades.
[0011] Preferably, the upper and lower shields can be spliced together, and a connecting component for connecting the upper and lower shields is provided at the splice point.
[0012] Preferably, the connecting assembly includes a connecting plate placed between the upper and lower shields, and the connecting plate is provided with plug-in pins that can be inserted into the plug-in holes on the shields. The plug-in pins are also provided with limiting grooves that cooperate with the limiting blocks. The plug-in pins and the shields are fixed together by magnetic attraction.
[0013] The advantages of this utility model compared to the prior art are:
[0014] This application utilizes detachable cave bodies to adjust the number of cave bodies within the shelter, allowing for flexible adjustments based on actual aquaculture needs to accommodate the dynamic habitat requirements of mud crabs at different growth stages. The shelter employs a layered, multi-chamber design, consisting of upper and lower layers and two independent front and rear chambers, significantly enhancing the device's capacity to accommodate cave bodies. Simultaneously, the cave bodies themselves feature a double-chamber structure, further expanding the crab capacity of a single cave body and effectively addressing the issue of insufficient cave numbers in existing devices, making it particularly suitable for high-density aquaculture. To adapt to large-scale aquaculture needs, multiple shelters can be joined side-by-side to form a unified structure, greatly improving space utilization. The bottom of the lower shelter is equipped with a fixing component; its core component, the insertion rod, can be directly inserted into the mud at the bottom of the aquaculture pond, using mechanical anchoring to counteract the lateral forces generated by water flow impact, preventing displacement of the shelter and ensuring the stability of the device in the aquatic environment. Furthermore, this application utilizes connecting components to achieve longitudinal stacking and expansion of the shelters. The connecting assembly includes a connecting plate and plug-in posts mounted on it. During assembly, the plug-in posts are inserted into the pre-set plug-in holes of the shielding cover. The limiting blocks and the limiting grooves on the surface of the plug-in posts form a fitting and limiting relationship, achieving a stable connection of the multi-layer shielding covers. This structure allows for flexible increases in the number of layers according to the height of the aquaculture space, further improving the space utilization rate within a unit of water area and providing more ample habitat for mud crabs. Attached Figure Description
[0015] Figure 1 This is a first three-dimensional structural schematic diagram of a multi-hole shielding device for burrowing mud crab farming according to the present invention.
[0016] Figure 2 This is a second three-dimensional structural diagram of a multi-hole shielding device for burrowing mud crabs according to the present invention.
[0017] Figure 3 This is an exploded structural diagram of a multi-hole shielding device for burrowing mud crab farming according to this utility model.
[0018] Figure 4 This is a schematic diagram of the structure of the left and right shielding covers of a multi-hole shielding device for burrowing mud crab farming according to this utility model, when they are spliced together.
[0019] Figure 5 This is a schematic diagram of the structure of the upper and lower shields of a multi-hole shielding device for burrowing mud crab farming according to this utility model, when they are spliced together.
[0020] Figure 6 This is a three-dimensional structural diagram of the connecting components of a multi-hole shielding device for burrowing mud crab farming, which is a utility model.
[0021] The following are the labels in the diagram: 1. Shielding cover; 11. Insert; 12. Limiting component; 13. Insertion hole; 14. Limiting block; 15. Slide groove; 16. Layered plate; 2. Cave component; 21. Cave body; 22. Slide rail; 3. Fixing component; 31. Insert rod; 32. Cutting blade; 4. Connecting component; 41. Connecting plate; 42. Insertion post; 421. Limiting groove. Detailed Implementation
[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.
[0023] Reference Figures 1-6As shown, this utility model provides a multi-hole shelter device for mud crab farming, including: a shelter cover 1, which can be placed in a pond to provide a safe living space for the mud crabs; and several cave components 2, which can be inserted into the shelter cover 1. The shelter cover 1 serves as the basic frame of the entire device and can be placed in the pond to create a relatively closed and safe overall living space for the mud crabs, blocking unnecessary external interference and providing a mounting carrier for the cave components 2. The cave components 2 include a cave body 21 and slide rails 22 arranged on the upper and lower sides of the cave body 21 and along the length of the cave body 21. A layered plate 16 is arranged at the center of the shelter cover 1 along its width direction, dividing the shelter cover 1 into upper and lower layers. A partition plate is also vertically arranged at the center of the shelter cover 1, which can divide the shelter cover 1 into front and rear cavities. The layered plate 16 and the shelter cover 1 are also provided with grooves 15 that cooperate with the slide rails 22. Each cave body 21 is divided into upper and lower cavities for the mud crabs to live in.
[0024] Through the coordinated operation of various components, a suitable habitat is provided for the mud crab (Scylla serrata). First, the shelter 1 is placed in the pond, serving as the basic structure to provide support and protection for the entire device, creating a relatively safe overall space. The layered plate 16 and partitions divide the interior of the shelter 1 into upper and lower layers and front and rear cavities, rationally dividing the internal space and creating conditions for the installation of multiple cave components 2. The cave bodies 21 in the cave components 2 slide and engage with the sliding grooves 15 on the shelter 1 and layered plate 16 via the upper and lower sliding rails 22, thus being smoothly inserted into the various layers and sections of the shelter 1. Since each cave body 21 has upper and lower cavities, and several cave components 2 can be installed as needed, the device can accommodate a large number of mud crabs. The mud crabs enter the cavities of the cave bodies 21 to inhabit, with the shelter 1 providing overall safety, and the cave bodies 21 providing specific hidden habitats. The combined action of all components meets the mud crab's need for a concealed environment, while simultaneously improving space utilization and adapting to the needs of mud crab farming.
[0025] The top and bottom of the shield 1 are provided with several insertion holes 13, and several limiting blocks 14 are provided on the side wall of each insertion hole 13. The upper and lower shields 1 can be spliced together, and a connecting assembly 4 for connecting the upper and lower shields 1 is provided between the splice. The connecting assembly 4 includes a connecting plate 41 placed between the upper and lower shields 1, and the connecting plate 41 is provided with insertion posts 42 that can be inserted into the insertion holes 13 on the shield 1. Limiting grooves 421 that cooperate with the limiting blocks 14 are also provided around the insertion posts 42. The insertion posts 42 are fixed to the shield 1 by magnetic attraction.
[0026] When it is necessary to increase the number of layers of the shielding cover 1, the upper and lower shielding covers 1 are spliced together using the connecting component 4. First, the connecting plate 41 is placed between the upper and lower shielding covers 1, so that the insertion post 42 on the connecting plate 41 is aligned with the insertion hole 13 at the top of the lower shielding cover 1, and the insertion hole 13 at the bottom of the upper shielding cover 1 is aligned with the insertion post 42 on the connecting plate 41. Then, the insertion post 42 is inserted into the corresponding insertion hole 13. During this process, the limiting block 14 on the side wall of the insertion hole 13 will be embedded in the limiting groove 421 around the insertion post 42. The cooperation of the two achieves mechanical limiting, preventing the insertion post 42 from rotating or shifting within the insertion hole 13. At the same time, the insertion post 42 and the shielding cover 1 are further fixed by magnetic attraction, using magnetic force to enhance the firmness of the connection and prevent the splicing from loosening under the action of external forces such as water flow impact. Through the synergistic effect of the above structures, the upper and lower shielding covers 1 are stably spliced together, thereby increasing the number of vertical layers of the device and further improving the space utilization rate to meet the habitat space requirements of mud crabs under different breeding densities.
[0027] A plug 11 is fixed on one side of the shield 1, and a limiting member 12 that can cooperate with the plug 11 is fixed on the other side of the shield 1. When the two shields 1 are connected left and right, the plug 11 can be inserted into the limiting member 12 and connected by a pin.
[0028] When two shields 1 need to be joined side-by-side, the operation procedure is as follows: First, align the side of one shield 1 with the insert 11 with the side of the other shield 1 with the limiting member 12, so that the insert 11 and the limiting member 12 are aligned. Then, push the two shields 1 closer together, allowing the insert 11 to gradually insert into the groove of the limiting member 12. At this point, the cooperation between the insert 11 and the limiting member 12 achieves the initial positioning and connection of the two shields 1. After the insert 11 is fully inserted into the limiting member 12, use a pin to pass through the pre-set pin holes on the insert 11 and the limiting member 12 to further secure them. This makes the two side-by-side joined shields 1 form a stable integral structure, preventing loosening or separation under the influence of external forces such as water flow impact or crab activity. This allows the shields 1 to expand horizontally, increasing the overall coverage area of the device and improving space utilization to meet the needs of larger-scale aquaculture.
[0029] The bottom of the shield 1 is also provided with several threaded holes, and the bottom of the shield 1 is also provided with a fixing component 3, which can cooperate with the threaded holes. The fixing component 3 includes a vertically arranged insertion rod 31 at the bottom of the shield 1, and the top of the insertion rod 31 is also provided with an insertion rod 31 that cooperates with the threaded hole. The outside of the insertion rod 31 is also provided with several cutting blades 32.
[0030] Align the threaded structure at the top of the insert rod 31 with the threaded hole at the bottom of the shield 1, and rotate the insert rod 31 to make the two securely connected by the threaded engagement, thereby assembling the fixing component 3 and the shield 1.
[0031] When the shelter 1 is placed in the pond and needs to be secured, downward pressure is applied to the shelter 1 or the insertion rod 31, causing the insertion rod 31 to insert into the mud at the bottom of the pond. At this time, the cutting edge 32 on the outside of the insertion rod 31 comes into contact with the mud. As the insertion rod 31 moves downward, the cutting edge 32 cuts and breaks up obstacles in the mud, reducing the resistance during the insertion process and ensuring that the insertion rod 31 can be smoothly and deeply inserted into the mud. After the insertion rod 31 is deeply inserted into the mud, the friction and constraint force of the mud on the insertion rod 31 provide stable support and anchoring for the shelter 1, effectively resisting the impact of water flow and other external forces on the shelter 1, preventing the shelter 1 from shifting position or tipping over, thereby ensuring the stable operation of the entire device in the pond and providing a continuous and safe habitat for the crabs.
[0032] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A multi-hole concealing device for burrowing mud crab farming, characterized in that, include: The cover (1) can be placed in the pond to provide a safe living space for the mud crabs; The cave assembly (2) has several parts and can be inserted into the shield (1). The cave assembly (2) includes a cave body (21) and slide rails (22) arranged on the upper and lower sides of the cave body (21) and along the length of the cave body (21). The shield (1) has a layered plate (16) at its center along its width direction that divides the shield (1) into upper and lower layers. The shield (1) also has a partition plate at its center that can divide the shield (1) into front and rear cavities. The layered plate (16) and the shield (1) are also provided with grooves (15) that cooperate with the slide rails (22).
2. The multi-hole concealing device for burrowing mud crab farming according to claim 1, characterized in that, Each cave body (21) is divided into two cavities, one above the other, for the blue crabs to live in.
3. The multi-hole concealing device for burrowing mud crab farming according to claim 1, characterized in that, The shield (1) has several insertion holes (13) at its top and bottom, and several limiting blocks (14) are provided on the side wall of each insertion hole (13).
4. A multi-hole concealing device for burrowing mud crab farming according to claim 3, characterized in that, One side of the shield (1) is fixed with a plug (11), and the other side of the shield (1) is fixed with a limiting member (12) that can cooperate with the plug (11). When the two shields (1) are connected left and right, the plug (11) can be inserted into the limiting member (12) and connected by a pin.
5. A multi-hole concealing device for burrowing mud crab farming according to claim 4, characterized in that, The bottom of the shield (1) is also provided with several threaded holes, and the bottom of the shield (1) is also provided with a fixing component (3), which can cooperate with the threaded holes.
6. A multi-hole concealing device for burrowing mud crab farming according to claim 5, characterized in that, The fixing component (3) includes a vertically arranged insert (31) at the bottom of the shield (1), and the top of the insert (31) is also provided with an insert (31) that mates with a threaded hole. The outside of the insert (31) is also provided with several cutting blades (32).
7. A multi-hole concealing device for burrowing mud crab farming according to claim 1, characterized in that, The upper and lower shields (1) can be spliced together, and a connecting component (4) for connecting the upper and lower shields (1) is provided between the splices.
8. A multi-hole concealing device for burrowing mud crab farming according to claim 7, characterized in that, The connecting assembly (4) includes a connecting plate (41) placed between the upper and lower shields (1), and the connecting plate (41) is provided with plug-in pins (42) that can be inserted into the plug-in holes (13) on the shields (1). The plug-in pins (42) are also provided with limiting grooves (421) that cooperate with the limiting block (14). The plug-in pins (42) and the shields (1) are fixed together by magnetic attraction.