A crab breeding pond escape prevention structure

Abstract

This utility model discloses an escape-proof structure for crab breeding ponds, relating to the field of aquaculture technology. It includes a base, a protective rotating mechanism, and a protective mechanism. The base is semi-cylindrical in the middle and semi-circular at both ends. The protective rotating mechanism is fixedly connected to the lower center of the protective mechanism and positioned in the middle of the base. The length of the entire structure is customized according to the side length of the breeding pond to ensure the long plate covers the pond edge. Manually rotating the protective rotating mechanism causes the base plate to move in a fan-shaped motion, with the semi-toothed bolts at both ends sliding in corresponding arc-shaped grooves. When the connecting plate rotates to a certain angle, under the action of gravity, the T-shaped rail begins to slide in the T-shaped groove, causing the lower edge of the long plate to gradually approach the edge of the breeding pond. Continuing to rotate until the angle between the long plate and the toothed edge is large, and with the long plate surface smooth, ensures that crabs cannot climb over the long plate, thus achieving the purpose of preventing escape.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to an escape prevention structure for crab seedling ponds. Background Technology

[0002] In the crab farming industry, the seedling raising stage is a crucial stage that determines the subsequent farming benefits. As the core place for the growth and development of juvenile crabs, the escape prevention performance of the seedling pond directly affects the survival rate of juvenile crabs and the success rate of seedling raising.

[0003] However, crab larvae have strong climbing, phototaxis, and traversing-water behaviors. They are highly mobile and small in size, making them prone to escaping through the edges of nursery ponds. In practice, the escape of juvenile crabs not only leads to a significant reduction in the number of nursery stock but may also pose ecological risks if escaped individuals enter natural waters. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an escape prevention structure for crab breeding ponds.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an escape-proof structure for a crab breeding pond, comprising a base, a protective rotating mechanism, and a protective mechanism. The base is semi-cylindrical in the middle and semi-circular at both ends. The protective rotating mechanism is fixedly connected to the lower middle of the protective mechanism and located in the middle of the base. Arc-shaped grooves are provided in the middle of the semi-circular ends of the base. The protective mechanism is movably connected to the base through the arc-shaped grooves. The protective mechanism includes a long plate, T-shaped rails, a connecting plate, a base plate, semi-threaded bolts, and arc blocks. Multiple sets of T-shaped rails are fixedly welded to one side of the long plate. Multiple sets of T-shaped grooves are provided on one side of the connecting plate. The connecting plate is slidably connected to the long plate through the cooperation of the T-shaped rails and T-shaped grooves. The connecting plate is fixedly connected to one side of the base plate. The long plate abuts against the edge of the breeding pond in an inclined posture.

[0006] Preferably, the two ends of the base plate are attached to the outer sides of the two semi-circular ends of the base, and the semi-threaded bolts pass through the arc block and the arc groove in sequence and are fixedly connected to the ends of the base plate.

[0007] Preferably, the semi-toothed bolt slides inside the arc-shaped groove, and the arc block slides inside the semi-ring at the end of the base.

[0008] Preferably, the protective rotating mechanism includes a worm gear half-turn, a handle, a ring seat, and a worm, with two sets of the ring seats fixedly connected to the middle of the other side of the base plate.

[0009] Preferably, the worm gear is rotatably connected to the middle of the two sets of ring seats, and the handle is fixedly connected to one end of the worm gear.

[0010] Preferably, the worm wheel half-circle is an annular structure with a groove on its surface that matches the worm, and is fixedly connected to the middle of the base, wherein the worm meshes with the outer groove of the worm wheel half-circle.

[0011] Preferably, multiple sets of protrusions are fixedly welded around the perimeter of the base.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the length of the entire structure is customized according to the side length of the seedling pond. Different lengths are reflected in the different semi-cylindrical lengths in the middle of the base and the overall length of the protective mechanism, ensuring that the long plate can cover the edge of the pond. When the protective rotating mechanism is manually rotated, it drives the base plate to make a fan-shaped movement. The semi-toothed bolts at both ends slide in the corresponding arc grooves. When the connecting plate is rotated to a certain angle, under the action of gravity, the T-shaped rail begins to slide in the T-shaped groove, so that the lower edge of the long plate gradually approaches the edge of the seedling pond. Continue to rotate until the angle between the long plate and the toothed edge is large, and when the surface of the long plate is smooth, it ensures that the crabs cannot climb over the long plate, thereby achieving the purpose of preventing escape.

[0014] 2. In this utility model, by rotating the handle, the worm gear rotates within two sets of ring seats. During the rotation of the worm gear, it engages with the outer groove of the half-circle worm wheel. Since the half-circle worm wheel is fixed, the worm gear moves in a fan shape along the outer trajectory of the half-circle worm wheel. The protective rotation mechanism is used to adjust the tilt angle of the protective mechanism, which can be reasonably adjusted according to specific circumstances, making it more convenient and practical. In addition, this meshing relationship between the half-circle worm wheel and the worm gear is similar to that of a worm gear box, and both have a self-locking ability to ensure that the angle of the protective mechanism is fixed, thus better preventing crabs from escaping. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of an escape-proof structure for a crab nursery pond.

[0016] Figure 2 This utility model provides a three-dimensional structural diagram of an escape prevention structure for a crab nursery pond.

[0017] Figure 3 This utility model provides a partial three-dimensional structural diagram of an escape prevention structure for a crab nursery pond.

[0018] Figure 4 This utility model presents a schematic diagram showing the relationship between the escape prevention structure of a crab breeding pond and the position of the pond edge.

[0019] Legend: 1. Base; 11. Protrusion; 12. Arc groove; 2. Protective rotating mechanism; 21. Half-turn worm gear; 22. Handle; 23. Ring seat; 24. Worm; 3. Protective mechanism; 31. Long plate; 32. T-rail; 33. T-slot; 34. Connecting plate; 35. Base plate; 36. Half-thread bolt; 37. Arc block. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides an escape-proof structure for crab breeding ponds, including a base 1, a protective rotating mechanism 2, and a protective mechanism 3. The base 1 is semi-cylindrical in the middle and semi-circular at both ends. The protective rotating mechanism 2 is fixedly connected to the lower middle of the protective mechanism 3 and is located in the middle of the base 1. Arc-shaped grooves 12 are opened in the middle of the semi-circular ends of the base 1. The protective mechanism 3 is movably connected to the base 1 through the arc-shaped grooves 12. The protective mechanism 3 includes a long plate 31, T-shaped rails 32, a connecting plate 34, a base plate 35, semi-threaded bolts 36, and arc blocks 37. Multiple sets of T-shaped rails 32 are fixedly welded to one side of the long plate 31. The connecting plate 34 has multiple sets of T-slots 33 on one side. The connecting plate 34 is slidably connected to the long plate 31 through the cooperation of the T-slots 32 and T-slots 33. The connecting plate 34 is fixedly connected to one side of the base plate 35. The long plate 31 abuts against the edge of the seedling pond in an inclined position. The two ends of the base plate 35 are attached to the outer side of the two semi-rings of the base 1. The semi-threaded bolts 36 pass through the arc block 37 and the arc groove 12 in sequence and are fixedly connected to the end of the base plate 35. The semi-threaded bolts 36 slide inside the arc groove 12. The arc block 37 slides inside the semi-ring at the end of the base 1. Multiple sets of protrusions 11 are fixedly welded around the base 1.

[0023] The specific settings and functions of this embodiment are described below: The length of the entire structure is customized according to the side length of the seedling pond. Different lengths are reflected in the semi-cylindrical length of the middle part of the base 1 and the overall length of the protective mechanism 3. This ensures that the long plate 31 can cover the edge of the pond. The protective rotating mechanism 2 is manually rotated, which drives the base plate 35 to make a fan-shaped movement. The semi-toothed bolts 36 at both ends slide in the corresponding arc grooves 12, and the arc block 37 slides against the inner side of the semi-ring at the end of the base 1. This ensures that the base plate 35 drives the connecting plate 34 and the long plate 31 to rotate stably. When the connecting plate 34 rotates to a certain angle, under the action of gravity, the T-shaped rail 32 begins to slide in the T-shaped groove 33, so that the lower edge of the long plate 31 gradually approaches the edge of the seedling pond. The rotation continues until the angle between the long plate 31 and the toothed edge is large, and the surface of the long plate 31 is smooth, ensuring that the crabs cannot climb over the long plate 31, thereby achieving the purpose of preventing escape. Finally, the position is finely adjusted, and the entire structure is fixed to the edge of the seedling pond by anchoring or bolting the protrusion 11.

[0024] Example 2: Figure 1 - Figure 4 As shown, the protective rotating mechanism 2 includes a worm gear half-circle 21, a handle 22, an annular seat 23, and a worm 24. Two sets of annular seats 23 are fixedly connected to the middle of the other side of the base plate 35. The worm 24 is rotatably connected to the middle of the two sets of annular seats 23. The handle 22 is fixedly connected to one end of the worm 24. The worm gear half-circle 21 is an annular structure with a groove on its surface that matches the worm 24, and is fixedly connected to the middle of the base 1. The worm 24 meshes with the outer groove of the worm gear half-circle 21.

[0025] The overall effect of this embodiment is that by rotating the handle 22, the worm 24 is driven to rotate within the two sets of ring seats 23. During the rotation of the worm 24, it engages with the outer groove of the worm wheel half-circle 21. Since the worm wheel half-circle 21 is fixed, the worm 24 moves in a fan shape along the outer trajectory of the worm wheel half-circle 21. The protective rotation mechanism 2 is used to adjust the tilt angle of the protective mechanism 3, which can be reasonably adjusted according to specific circumstances, making it more convenient and practical. In addition, this meshing relationship between the worm wheel half-circle 21 and the worm 24 is similar to that of a worm gear box, and both have self-locking capabilities to ensure that the angle of the protective mechanism 3 is fixed, thus better preventing the crab from escaping.

[0026] The usage and working principle of this device: The length of the entire structure is customized according to the side length of the seedling pond. Different lengths are reflected in the semi-cylindrical length of the middle part of the base 1 and the overall length of the protective mechanism 3, ensuring that the long plate 31 can cover the edge of the pond. By rotating the handle 22, the worm 24 is driven to rotate in the two sets of ring seats 23. During the rotation of the worm 24, it engages with the outer groove of the worm wheel half-circle 21. Since the worm wheel half-circle 21 is fixed, the worm 24 moves in a fan-shaped motion along the outer trajectory of the worm wheel half-circle 21. Under the connection of the ring seats 23, it drives the base plate 35 to move in a fan-shaped motion. The half-threaded bolts 36 at both ends are in the corresponding arc-shaped grooves 1. In step 2, the arc block 37 slides against the inner side of the semi-circle at the end of the base 1, ensuring that the base plate 35 drives the connecting plate 34 and the long plate 31 to rotate stably. When the connecting plate 34 rotates to a certain angle, under the action of gravity, the T-shaped rail 32 begins to slide in the T-shaped groove 33, so that the lower edge of the long plate 31 gradually approaches the edge of the seedling pond. It continues to rotate until the angle between the long plate 31 and the toothed edge is large, and under the condition that the surface of the long plate 31 is smooth, it ensures that the crab cannot climb over the long plate 31, thereby achieving the purpose of preventing escape. Finally, the position is finely adjusted, and the entire structure is fixed to the edge of the seedling pond by anchoring nails or bolts in the middle of the protrusion 11.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An escape-prevention structure for crab breeding ponds, characterized in that, The device includes a base (1), a protective rotating mechanism (2), and a protective mechanism (3). The base (1) is semi-cylindrical in the middle and semi-ringed at both ends. The protective rotating mechanism (2) is fixedly connected to the lower middle part of the protective mechanism (3) and is located in the middle of the base (1). The semi-ringed ends of the base (1) are provided with arc-shaped grooves (12). The protective mechanism (3) is movably connected to the base (1) through the arc-shaped grooves (12). The protective mechanism (3) includes a long plate (31) and a T-shaped rail (32). The connecting plate (34), the base plate (35), the half-threaded bolt (36) and the arc block (37) are fixedly welded to one side of the long plate (31) by multiple sets of T-shaped rails (32). Multiple sets of T-shaped grooves (33) are opened on one side of the connecting plate (34). The connecting plate (34) is slidably connected to the long plate (31) through the cooperation of the T-shaped rails (32) and the T-shaped grooves (33). The connecting plate (34) is fixedly connected to one side of the base plate (35). The long plate (31) abuts against the edge of the seedling pond in an inclined posture.

2. The escape-prevention structure for a crab nursery pond according to claim 1, characterized in that: The two ends of the base plate (35) are attached to the outer side of the two semi-circular ends of the base (1), and the semi-tooth bolts (36) pass through the arc block (37) and the arc groove (12) in sequence and are fixedly connected to the end of the base plate (35).

3. The escape-prevention structure for a crab nursery pond according to claim 2, characterized in that: The semi-toothed bolt (36) slides inside the arc groove (12), and the arc block (37) slides inside the semi-ring at the end of the base (1).

4. The escape-prevention structure for a crab nursery pond according to claim 3, characterized in that: The protective rotating mechanism (2) includes a worm gear half-circle (21), a handle (22), a ring seat (23) and a worm (24), with two sets of the ring seats (23) fixedly connected to the middle of the other side of the base plate (35).

5. The escape-prevention structure for a crab nursery pond according to claim 4, characterized in that: The worm (24) is rotatably connected to the middle of the two sets of ring seats (23), and the handle (22) is fixedly connected to one end of the worm (24).

6. The escape-prevention structure for a crab nursery pond according to claim 5, characterized in that: The worm wheel half-circle (21) is an annular structure with a groove on its surface that matches the worm (24), and is fixedly connected to the middle of the base (1). The worm (24) meshes with the outer groove of the worm wheel half-circle (21).

7. The escape-prevention structure for a crab nursery pond according to claim 1, characterized in that: The base (1) has multiple sets of protrusions (11) fixedly welded around its perimeter.

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