Hairy crab breeding escape prevention device

Abstract

The utility model relates to the technical field of breeding escape-proof devices, in particular to a hairy crab breeding escape-proof device which comprises a foundation, an L-shaped installation plate is arranged on the upper portion of the foundation and installed in an inverted mode, the long edge of the L-shaped installation plate is attached to the water facing edge of the foundation, and the short edge of the L-shaped installation plate is connected with the top of the foundation through a fixing pin. The L-shaped mounting plate is provided with a portable mounting anti-escape assembly, the portable mounting anti-escape assembly is used for preventing the hairy crabs in the breeding pond from escaping, and the anti-escape device for breeding the hairy crabs aims at solving the problems that an existing anti-escape structure is inconvenient to mount and not ideal in anti-escape effect.

Description

Technical Field

[0001] This utility model relates to the technical field of escape prevention devices for aquaculture, and in particular to an escape prevention device for mitten crab farming. Background Technology

[0002] In recent years, with the continuous development of aquaculture, the scale of mitten crab farming, as a high-value-added aquatic product, has been expanding year by year across the country. Especially in major crab-producing areas, artificial pond farming has become one of the mainstream methods, mostly based on open ponds or dammed water bodies, controlling their activity range through artificial feeding and fencing. However, mitten crabs have strong climbing abilities, high alertness, and agility; if the farming boundaries are improperly set or the structure is aging, mitten crabs often escape along the pond walls, resulting in direct economic losses and causing significant problems for farmers.

[0003] In the prior art, soft escape-proof nets or plastic baffles are set up around the pond. Although such structures can prevent escape to a certain extent, most of them are fixed and difficult to disassemble and adjust according to changes in aquaculture conditions. They are also simple in structure, have poor adaptability, and are not practical. Therefore, this utility model discloses an escape-proof device for mitten crab farming to solve the problems of inconvenient installation and unsatisfactory escape-proof effect of existing escape-proof structures. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose an escape prevention device for crab farming, so as to solve the problems of inconvenient installation and unsatisfactory escape prevention effect of existing escape prevention structures.

[0005] To achieve the above objectives, this utility model provides an escape prevention device for mitten crab farming, comprising: a foundation, an L-shaped mounting plate on the upper part of the foundation, the L-shaped mounting plate being installed upside down, the long side of the L-shaped mounting plate being attached to the water-facing side of the foundation, the short side of the L-shaped mounting plate being connected to the top of the foundation by a fixing pin, and a portable escape prevention component being provided on the L-shaped mounting plate, the portable escape prevention component being used to prevent mitten crabs from escaping from the farming pond.

[0006] Preferably, the portable anti-escape component includes multiple sets of mounting cylinders, which are evenly arrayed and installed on the top of the water-facing side of the short side of the L-shaped mounting plate. Each set of mounting cylinders has a limiting groove on its inner wall opposite to its two side walls. A positioning post is slidably inserted into the top of each set of mounting cylinders. One end of each positioning post is slidably inserted into the mounting cylinder, and the other end of each positioning post is provided with a mounting sleeve. The other ends of the multiple sets of mounting sleeves are collectively fitted with an L-shaped anti-escape ramp. The L-shaped anti-escape ramp is installed inverted at a 120-degree angle, with its long side end inserted into the water along the water-facing side wall of the foundation. The foundation is located on the side wall in the water. The top of the L-shaped anti-escape inclined plate is provided with a T-shaped secondary anti-escape plate. The positioning column is inserted into the side wall of one end of the mounting cylinder, corresponding to the position of the limiting circular groove. Two sets of fixing columns are slidably installed. One end of each of the two sets of fixing columns is slidably inserted into the limiting circular groove, and the other end of each set of fixing columns protrudes through the side wall of the positioning column. The arc wall of each of the two sets of fixing columns located in the inner cavity of the positioning column is provided with a limiting ring. One end of each of the two sets of limiting rings abuts against the inner wall of the inner cavity of the positioning column. The other side wall of each of the two sets of limiting rings is jointly installed with a limiting spring, and the limiting spring is sleeved on the fixing column.

[0007] Preferably, one end of each of the two sets of fixing posts embedded in the limiting circular groove is spherical, and the edge of the limiting circular groove is arc-shaped, with the spherical end of the fixing post slidingly engaging with the arc-shaped edge of the limiting circular groove.

[0008] Preferably, the multiple sets of mounting cylinders are fixedly mounted on the top of the L-shaped mounting plate.

[0009] Preferably, the outer length and width dimensions of the positioning post are the same as the inner length and width dimensions of the mounting cylinder.

[0010] Preferably, the positioning post has a first circular hole with the same diameter as the fixing post at the position corresponding to each group of fixing posts.

[0011] Preferably, the positioning post is inserted into the mounting sleeve at one end and the mounting sleeve is engaged with each other, and multiple sets of the mounting sleeves are fixedly installed on the L-shaped anti-escape inclined plate.

[0012] Preferably, the L-shaped mounting plate has a second hole that matches the fixing pin at the position of each set of fixing pins.

[0013] The beneficial effects of this utility model are:

[0014] This device utilizes an inverted L-shaped mounting plate installed on a foundation. Its long side fits against the water-facing edge of the foundation, while its short side is securely connected to the top of the foundation via a fixing pin, creating a stable foundation structure. A portable escape-prevention component is integrated into the L-shaped mounting plate, facilitating disassembly, replacement, and maintenance, thus improving the flexibility of aquaculture management. The portable escape-prevention component employs multiple mounting cylinders and slidingly inserted positioning posts, enabling rapid assembly and positioning of the escape-prevention structure. The positioning posts connect to the L-shaped escape-prevention ramp via mounting sleeves, extending the escape-prevention structure into the water and forming an angled slope to effectively prevent crabs from climbing out of the pond. Furthermore, a T-shaped secondary escape-prevention plate is added to the top of the ramp, creating multiple escape-prevention barriers and enhancing the overall protective effect. The overall structure uses a snap-fit ​​and sliding-insertion mechanical connection method, eliminating the need for welding or threaded fasteners. On-site installation is simple and quick, making it suitable for various types of ponds or dam edges, and possessing promising prospects for widespread application and practical value. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a two-dimensional structural diagram of the present invention from a second perspective;

[0018] Figure 3 This is a three-dimensional cross-sectional view of part of the structure of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] The diagram is marked as follows:

[0021] 1. Foundation; 2. L-shaped mounting plate; 3. Fixing pin; 4. Mounting cylinder; 5. Positioning post; 6. L-shaped anti-escape ramp; 7. T-shaped secondary anti-escape plate; 8. Mounting sleeve; 9. Fixing post; 10. Limiting ring; 11. Limiting spring; 12. Limiting groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] This utility model provides, for example Figures 1 to 4 The device shown is an escape prevention device for mitten crab farming, comprising: a base 1, an L-shaped mounting plate 2 on the upper part of the base 1, the L-shaped mounting plate 2 being installed upside down, the long side of the L-shaped mounting plate 2 being attached to the water-facing side of the base 1, the short side of the L-shaped mounting plate 2 being connected to the top of the base 1 by a fixing pin 3, and a portable escape prevention component being provided on the L-shaped mounting plate 2, the portable escape prevention component being used to prevent mitten crabs in the farming pond from escaping;

[0025] This device constructs a stable foundation structure by installing an inverted L-shaped mounting plate 2 on the foundation 1, with its long side fitting against the water-facing side of the foundation 1 and its short side securely connected to the top of the foundation 1 via a fixing pin 3. A portable escape-prevention component is also installed on the L-shaped mounting plate 2, making the entire escape-prevention structure easy to disassemble, replace, and maintain, thus improving the flexibility of aquaculture management. In the portable escape-prevention component, multiple sets of mounting cylinders 4 cooperate with slidingly inserted positioning posts 5, allowing for rapid assembly and positioning of the escape-prevention structure. The positioning posts 5 are connected to the L-shaped escape-prevention inclined plate 6 via mounting sleeves 8, extending the escape-prevention structure into the water and forming a slope at a certain angle, effectively preventing crabs from climbing up the pond wall to the outside. Furthermore, a T-shaped secondary escape-prevention plate 7 is added to the top of the inclined plate, forming multiple escape-prevention barriers and enhancing the overall protective effect. The overall structure adopts a snap-fit ​​and sliding mechanical connection method, which eliminates the need for welding or threaded fasteners. On-site installation is simple and quick, and it is suitable for different types of ponds or dam edges. It has good prospects for promotion and application and practical value.

[0026] Furthermore, in this example, such as Figure 3 and Figure 4As shown, the portable anti-escape component includes multiple sets of mounting cylinders 4, which are evenly arrayed and installed on the top of the water-facing side of the short side of the L-shaped mounting plate 2. Each set of mounting cylinders 4 has a limiting groove 12 on its inner wall opposite to its two side walls. A positioning post 5 is slidably inserted into the top of each set of mounting cylinders 4. One end of each positioning post 5 is slidably inserted into the mounting cylinder 4, and the other end of each positioning post 5 is provided with a mounting sleeve 8. The other ends of the multiple sets of mounting sleeves 8 are jointly installed with an L-shaped anti-escape ramp 6. The L-shaped anti-escape ramp 6 is installed inverted at a 120-degree angle, with its long side end inserted into the water along the water-facing side wall of the foundation 1, and its end inserted into the foundation. 1. Located on the side wall in the water, the top of the L-shaped anti-escape inclined plate 6 is provided with a T-shaped secondary anti-escape plate 7. The positioning column 5 is inserted into the side wall of one end of the mounting cylinder 4, corresponding to the position of the limiting circular groove 12. Two sets of fixing columns 9 are slidably installed. One end of the two sets of fixing columns 9 relative to the two sets of limiting circular grooves 12 is slidably inserted into the limiting circular grooves 12, and the other end of the two sets of fixing columns 9 passes through and protrudes from the side wall of the positioning column 5. The arc wall of the two sets of fixing columns 9 located in the inner cavity of the positioning column 5 is provided with a limiting ring 10. One end of the two sets of limiting rings 10 abuts against the inner wall of the inner cavity of the positioning column 5. The other side wall of the two sets of limiting rings 10 is jointly installed with a limiting spring 11, and the limiting spring 11 is sleeved on the fixing column 9.

[0027] When the positioning post 5 is inserted into the mounting cylinder 4 from the top, the first circular hole on the side wall of the positioning post 5 will form an alignment through-hole structure with the limiting circular groove 12 on the inner wall of the mounting cylinder 4 in the axial direction. At this time, when the fixed post 9 slidably inserted on the positioning post 5 corresponds to the upper limiting circular groove 12, the two sets of fixed posts 9 set in the positioning post 5 will automatically pop outward under the push of the limiting spring 11, and embed into the corresponding limiting circular grooves 12 on both sides of the mounting cylinder 4, thereby realizing the axial limiting and locking of the positioning post 5. The edge of the limiting circular groove 12 is arc-shaped, which, together with the structure of the spherical end of the fixed post 9, provides good guidance and sliding fit during insertion, avoiding jamming or structural damage due to eccentricity. At the same time, the fixed post 9 passes through the inner cavity of the positioning post 5, and its rear end abuts against the inner wall of the positioning post 5 through the limiting ring 10. The limiting spring 11 is sleeved on the fixed post 9 and pushes it towards the limiting circular groove 12, thereby providing a continuous elastic locking force. The overall structure requires no tools; it can be automatically positioned by insertion. When disassembling, simply press the fixing column 9 inward to release the limiting state, enabling convenient and quick installation and replacement. This significantly improves the ease of operation and on-site adaptability of the escape prevention device.

[0028] Furthermore, in this example, such as Figure 2 and Figure 4As shown, one end of each of the two sets of fixing posts 9 embedded in the limiting circular groove 12 is spherical, and the edge of the limiting circular groove 12 is arc-shaped. The spherical end of the fixing post 9 slides and fits with the arc-shaped edge of the limiting circular groove 12. Multiple sets of mounting cylinders 4 are fixedly installed on the top of the L-shaped mounting plate 2. The outer length and width of the positioning post 5 are the same as the inner length and width of the mounting cylinder 4. The positioning post 5 has a first circular hole with the same diameter as the fixing post 9 at the position corresponding to each set of fixing posts 9. The end of the positioning post 5 connected to the mounting sleeve plate 8 is inserted and fitted into each other. Multiple sets of mounting sleeve plates 8 are fixedly installed on the L-shaped anti-escape inclined plate 6. The L-shaped mounting plate 2 has a second hole that fits with the fixing pin 3 at the position corresponding to each set of fixing pin 3.

[0029] Multiple sets of mounting cylinders 4 are fixedly installed on the top of the short side of the L-shaped mounting plate 2, serving as the basic fixed components supporting the escape-prevention assembly. The mounting cylinders 4 and the L-shaped mounting plate 2 are integrally formed or welded together to ensure overall bending rigidity. The external dimensions of the positioning post 5 are precisely matched with the internal dimensions of the mounting cylinder 4, allowing for smooth sliding insertion. Once inserted and locked by the fixing post 9, the upper structure can be stably supported. The upper end of the positioning post 5 is connected to the mounting sleeve plate 8 using a snap-fit ​​connection structure. After insertion and positioning, it is fixed by structural buckles or interlocking parts, making the mounting sleeve plate 8 a connecting intermediate component. An L-shaped escape-prevention inclined plate 6 is fixedly installed on its upper part. The L-shaped escape-prevention inclined plate 6 is an inverted structure at 120 degrees. After installation, the long side of the plate hangs down into the water and fits against the lower part of the water-facing side wall of the foundation 1, effectively blocking the crabs' climbing route from the shore to the water. The short side fits against the mounting sleeve plate 8 and maintains the same angle rigidity, improving the protective coverage and mechanical strength. Furthermore, the T-shaped secondary escape-proof plate 7 set at the top of the L-shaped escape-proof inclined plate 6 forms a vertical protective extension surface, creating a physical flipping and blocking effect when the crab successfully approaches the top. Finally, the L-shaped mounting plate 2 is fastened to the top of the foundation 1 through the second hole and fixing pin 3, which not only stably supports the entire escape-proof structure but also facilitates future dismantling and maintenance without large-scale demolition of the foundation 1, thus possessing the practical advantages of high efficiency and environmental protection. Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model (including the claims) is limited to these examples; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An escape-preventing device for Eriocheir sinensis culture, characterized in that, include: The foundation (1) has an L-shaped mounting plate (2) on its upper part. The L-shaped mounting plate (2) is installed upside down, and the long side of the L-shaped mounting plate (2) is attached to the water-facing side of the foundation (1). The short side of the L-shaped mounting plate (2) is connected to the top of the foundation (1) by a fixing pin (3). The L-shaped mounting plate (2) is equipped with a portable anti-escape component, which is used to prevent the mitten crabs in the breeding pond from escaping.

2. The crab breeding escape-proof device according to claim 1, characterized in that, The portable anti-escape assembly includes multiple sets of mounting cylinders (4). These cylinders (4) are evenly arrayed and installed on the top of the water-facing side of the short side of the L-shaped mounting plate (2). Each set of mounting cylinders (4) has a limiting groove (12) on its inner wall opposite to its two side walls. A positioning post (5) is slidably inserted into the top of each set of mounting cylinders (4). One end of each positioning post (5) is slidably inserted into the mounting cylinder (4), and the other end of each positioning post (5) is provided with a mounting sleeve (8). The other ends of the multiple sets of mounting sleeves (8) are jointly installed with an L-shaped anti-escape ramp (6). The L-shaped anti-escape ramp (6) is installed inverted at a 120-degree angle, with the long side of the L-shaped anti-escape ramp (6) inserted into the water along the water-facing side wall of the foundation (1). The end of the L-shaped anti-escape ramp (6) is inserted into the water-facing side of the foundation (1). The L-shaped anti-escape ramp (6) is provided with a T-shaped secondary anti-escape ramp (7) on the top of the side wall. The positioning post (5) is inserted into the side wall of one end of the mounting cylinder (4) and two sets of fixing posts (9) are slidably installed at the position corresponding to the limiting circular groove (12). One end of the two sets of fixing posts (9) relative to the two sets of limiting circular grooves (12) is slidably inserted into the limiting circular groove (12), and the other end of the two sets of fixing posts (9) protrudes through the side wall of the positioning post (5). The two sets of fixing posts (9) are provided with limiting rings (10) on the arc wall of the inner cavity of the positioning post (5). One end of the two sets of limiting rings (10) abuts against the inner wall of the inner cavity of the positioning post (5). The other side wall of the two sets of limiting rings (10) is jointly installed with a limiting spring (11), and the limiting spring (11) is sleeved on the fixing post (9).

3. The crab breeding escape-preventing device according to claim 2, characterized in that, Both sets of fixed posts (9) are spherical at one end when embedded in the limiting groove (12), and the edge of the limiting groove (12) is arc-shaped. The spherical end of the fixed post (9) slides and fits with the arc-shaped edge of the limiting groove (12).

4. The crab breeding escape-preventing device according to claim 3, characterized in that, Multiple sets of mounting cylinders (4) are fixedly mounted on the top of the L-shaped mounting plate (2).

5. The crab breeding escape-preventing device according to claim 4, characterized in that, The outer length and width dimensions of the positioning post (5) are the same as the inner length and width dimensions of the mounting cylinder (4).

6. The escape prevention device for mitten crab farming according to claim 5, characterized in that, The positioning post (5) has a first circular hole with the same diameter as the fixing post (9) at the position corresponding to each group of fixing posts (9).

7. The crab breeding escape-preventing device according to claim 6, characterized in that, The positioning column (5) is connected to the mounting sleeve (8) at one end in a snap-fit ​​installation, and multiple sets of the mounting sleeve (8) are fixedly installed on the L-shaped anti-escape inclined plate (6).

8. The crab breeding escape-preventing device according to claim 7, characterized in that, The L-shaped mounting plate (2) has a second hole that matches the position of each set of fixing pins (3).

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