A shrimp and crab catching and collecting device

Abstract

The present disclosure provides a shrimp and crab catching and collecting device, which comprises a trapping cage, a communication cage, a storage cage and a switch assembly. The trapping cage is used to trap shrimp and crab underwater. The communication cage has a first end and a second end. The first end of the communication cage is in communication with the trapping cage. The second end of the communication cage is above the first end in the vertical direction. The storage cage comprises a cage body and a cage cover. The cage cover is arranged at the bottom of the cage body. The second end of the communication cage is in communication with the cage body. The storage cage is used to be placed above the water surface. The switch assembly is connected with the cage cover. Under the action of gravity, the switch assembly makes the cage cover in a closed state. The cage cover is in contact with the cage body and forms a closed containing space. Under the action of external force, the switch assembly is in an open state. The cage cover is separated from the cage body. The shrimp and crab catching and collecting device can realize the trapping and storage of shrimp and crab, so as to facilitate the collection of shrimp and crab, reduce the working intensity of fishermen, shorten the operation time, improve the efficiency of shrimp and crab collection, and improve the safety of shrimp and crab fishing.

Description

Technical Field

[0001] The embodiments disclosed herein belong to the technical field of aquaculture equipment, specifically relating to a shrimp and crab catching and harvesting device. Background Technology

[0002] Currently, shrimp and crab farming widely employs net cages or rigid plastic cages for trapping, both of which rely on manual operation and are inefficient. Net cages consist of a steel frame and a protective netting, with an entrance for trapping. During operation, the cages must be set up in the farming area, and then manually retrieved after the shrimp and crabs have entered. However, the mesh structure of the nets easily becomes entangled with the claws and barbs on the legs of the shrimp and crabs, making the operation of a single cage time-consuming (approximately 1-2 minutes). Since dozens to hundreds of net cages need to be set up in a single pond, fishermen must work continuously for 1-2 hours to complete the harvest, resulting in significant time and labor costs.

[0003] To improve efficiency, rigid plastic cages were introduced. Their smooth surface reduces adhesion and shortens the operation time per cage, but still requires full manual intervention. Furthermore, the insufficient adhesion of the rigid plastic material makes it difficult for shrimp and crabs to climb the cage walls, and prolonged immersion in water can easily lead to oxygen deprivation and death. In addition, due to cost constraints, rigid plastic cages are typically smaller, resulting in a much lower catch volume per operation compared to net cages, making it difficult to meet the needs of large-scale fishing.

[0004] Existing technology forces fishermen to work from 2 to 3 a.m. every day to ensure that shrimp and crabs are sold fresh. Long-term nighttime fatigue operations frequently lead to drowning accidents, and there is an urgent need for an efficient and safe shrimp and crab fishing device. Utility Model Content

[0005] The embodiments disclosed herein aim to at least solve one of the technical problems existing in the prior art, and provide a shrimp and crab catching and harvesting device.

[0006] Embodiments of this disclosure provide a shrimp and crab catching and harvesting device, the device comprising: A trap, the trap being placed underwater to trap shrimp and crabs; A connecting cage having a first end and a second end, the first end of the connecting cage being connected to the trapping cage, and the second end of the connecting cage being located above the first end in the vertical direction; A storage cage, comprising a cage body and a cage cover, the cage cover being disposed at the bottom of the cage body, the second end of the connecting cage being connected to the cage body, the storage cage being used to be placed on the water surface; A switch assembly is connected to the cage cover. Under the action of gravity, the switch assembly keeps the cage cover in a closed state, and the cage cover contacts the cage body to form a closed receiving space. Under the action of external force, the switch assembly is in an open state, and the cage cover separates from the cage body.

[0007] In some embodiments of this disclosure, the device includes: a support member connected to the communicating cage or the storage cage, the support member extending vertically and for insertion into the mud at the bottom of the water.

[0008] In some embodiments of this disclosure, the switching assembly includes: A fixing rod, the two ends of which are respectively connected to the support member and the top of the cage; A first connecting rod is connected to the fixed rod and extends in a vertical direction; The counterweight bar has a first end and a second end that are arranged opposite to each other. The first end of the counterweight bar is connected to the cage cover. The counterweight bar is rotatably connected to the end of the first connecting rod near the cage cover. The axis of rotation of the counterweight bar is perpendicular to the length direction of the fixed rod and perpendicular to the length direction of the first connecting rod. A gravity component, wherein the gravity component is disposed at the second end of the counterweight rod; Under the action of gravity, the first end of the counterweight rod causes the cage cover to abut against the cage body and form a closed receiving space. Under the action of external force, the first end of the counterweight rod separates the cage cover from the cage body.

[0009] In some embodiments of this disclosure, the switching assembly further includes: The second connecting rod is connected to the fixed rod; A limiting rod is rotatably connected to the second connecting rod. The axis of rotation of the limiting rod is parallel to the vertical direction, and the limiting rod is located below the counterweight rod in the vertical direction.

[0010] In some embodiments of this disclosure, the second connecting rod is arranged parallel to the first connecting rod, and the second connecting rod and the first connecting rod are spaced apart along the length direction of the fixed rod.

[0011] In some embodiments of this disclosure, the connecting cage includes an inclined cage section, one end of which is connected to the trapping cage and the other end of which is connected to the storage cage, and the angle between the inclined cage section and the horizontal plane is greater than 0 degrees.

[0012] In some embodiments of this disclosure, the angle between the inclined cage section and the horizontal plane is less than 45 degrees.

[0013] In some embodiments of this disclosure, the connecting cage includes a horizontal cage section, the two ends of which are respectively connected to the inclined cage section and the storage cage. The inclined cage section and the storage cage are connected through the horizontal cage section, and the angle between the horizontal cage section and the horizontal plane is equal to 0 degrees.

[0014] In some embodiments of this disclosure, when the device is installed in an aquaculture area, the distance between the bottom of the storage cage and the water surface is greater than 50 centimeters.

[0015] In some embodiments of this disclosure, the trap cage is a long, narrow cage structure.

[0016] According to an embodiment of this disclosure, a shrimp and crab catching and harvesting device includes a trapping cage, a connecting cage, a storage cage, and a switching assembly. When the device is installed in an aquaculture area, the trapping cage is underwater, the connecting cage extends from underwater to above the water surface, and the storage cage is above the water surface, allowing fishermen to operate the storage cage from the surface to retrieve the shrimp and crabs inside. Specifically, the underwater trapping cage lures shrimp and crabs into it. After entering the trapping cage, the shrimp and crabs can crawl along the connecting cage and enter the storage cage. The storage cage has a movable lid, which is connected to the lid via the switching assembly, allowing the lid to be opened and closed. This enables manual or automatic control of the opening and closing of the storage cage, facilitating the fishermen's harvesting of the shrimp and crabs. This shrimp and crab catching and harvesting device enables the trapping and storage of shrimp and crabs, facilitating harvesting, reducing the workload of fishermen, shortening their working time, improving harvesting efficiency, and enhancing the safety of shrimp and crab fishing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the shrimp and crab catching and collecting device according to an embodiment of the present utility model. Figure 2 for Figure 1 The diagram shown illustrates the storage cage in a closed state. Figure 3 for Figure 1 The diagram shows the storage cage in the open position.

[0018] The labels in the attached diagram are as follows: 10. Trapping cage; 20. Connecting cage; 21. Inclined cage section; 22. Horizontal cage section; 30. Storage cage; 31. Cage body; 32. Cage lid; 40. Switch assembly; 41. Fixing rod; 42. First connecting rod; 43. Counterweight rod; 44. Gravity component; 45. Second connecting rod; 46. Limiting rod; 50. Support components. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining this disclosure and are not intended to limit the disclosure. The described embodiments are some, but not all, of the embodiments of this disclosure. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this disclosure.

[0020] like Figures 1 to 3 As shown, an embodiment of this disclosure provides a shrimp and crab catching and harvesting device, which includes: a trap 10, a connecting cage 20, a storage cage 30, and a switch assembly 40. The trap 10 is used to trap shrimp and crabs underwater. The connecting cage 20 has a first end and a second end. The first end of the connecting cage 20 is connected to the trap 10, and the second end of the connecting cage 20 is located above the first end in the vertical direction. The storage cage 30 includes a cage body 31 and a cage cover 32. The cage cover 32 is located at the bottom of the cage body 31, and the second end of the connecting cage 20 is connected to the cage body 31. The storage cage 30 is used to be placed above the water surface. The switch assembly 40 is connected to the cage cover 32. Under the action of gravity, the switch assembly 40 keeps the cage cover 32 in a closed state, and the cage cover 32 contacts the cage body 31 to form a closed receiving space. Under the action of external force, the switch assembly 40 is in an open state, and the cage cover 32 separates from the cage body 31.

[0021] According to an embodiment of this disclosure, a shrimp and crab catching and harvesting device includes a trapping cage 10, a connecting cage 20, a storage cage 30, and a switch assembly 40. When the device is installed in an aquaculture area, the trapping cage 10 is underwater, the connecting cage 20 extends from underwater to above the water surface, and the storage cage 30 is above the water surface, allowing fishermen to operate the storage cage 30 from the water surface to retrieve the shrimp and crabs inside. Specifically, the underwater trapping cage 10 can lure shrimp and crabs into its interior. After entering the trapping cage 10, the shrimp and crabs can crawl along the connecting cage 20 and enter the storage cage 30. The cover 32 of the storage cage 30 is a movable structure, connected to the cover 32 via the switch assembly 40, allowing the cover 32 to be opened and closed. This enables manual or automatic control of the opening and closing of the storage cage 30, facilitating fishermen to harvest the shrimp and crabs from the storage cage 30. Shrimp and crab catching and harvesting devices can be used to trap and store shrimp and crabs, making them easier to harvest, reducing the workload of fishermen, shortening their working time, improving harvesting efficiency, and enhancing the safety of shrimp and crab fishing.

[0022] In some embodiments of this disclosure, the device includes a support member 50 connected to the connecting cage 20 or the storage cage 30. The support member 50 extends vertically and is used to insert into the mud at the bottom of the water. Specifically, the support member 50 is a support rod, the length of which is the same as the vertical direction. One end of the support rod is inserted into the mud at the bottom of the water to provide support for components such as the trap cage 10, the connecting cage 20, the storage cage 30, and the switch assembly 40.

[0023] In some embodiments of this disclosure, the switch assembly 40 includes: a fixed rod 41, a first connecting rod 42, a counterweight rod 43, and a gravity member 44. Specifically, the two ends of the fixed rod 41 are respectively connected to the top of the support member 50 and the cage 31. The fixed rod 41 is arranged perpendicularly to the support rod. The first end of the first connecting rod 42 is connected to the fixed rod 41, and the second end of the first connecting rod 42 extends downward in a vertical direction to a position near the cage cover 32. The counterweight rod 43 has a first end and a second end arranged opposite to each other. The first end of the counterweight rod 43 is connected to the cage cover 32, and the second end of the counterweight rod 43 is provided with a gravity member 44 with a large weight. The counterweight rod 43 is rotatably connected to the second end of the first connecting rod 42 near the cage cover 32. The axis of rotation of the counterweight rod 43 is perpendicular to the length direction of the fixed rod 41 and perpendicular to the length direction of the first connecting rod 42.

[0024] Specifically, such as Figure 2 As shown, under the action of gravity, the second end of the counterweight rod 43 rotates downward, while the first end of the counterweight rod 43 rotates upward. The first end of the counterweight rod 43 causes the cage cover 32 to abut against the cage body 31, forming a closed receiving space; as shown. Figure 3 As shown, under the action of external force, the second end of the counterweight rod 43 rotates upward, and at the same time, the first end of the counterweight rod 43 rotates downward. The first end of the counterweight rod 43 separates the cage cover 32 from the cage body 31, so that the shrimp and crabs in the cage body 31 can get out of the cage body 31.

[0025] It should be noted that, in the absence of external force, the weight of the gravity member 44 at the second end of the counterweight rod 43 can ensure that the cage cover 32 at the second end of the counterweight rod 43 will not separate from the cage body 31; and, under the action of external force, the weight of the gravity member 44 can ensure that the gravity member 44 can move upward under the action of external force.

[0026] In some embodiments of this disclosure, the switch assembly 40 further includes a second connecting rod 45 and a limiting rod 46. The second connecting rod 45 is connected to the fixed rod 41, and the limiting rod 46 is rotatably connected to the second connecting rod 45. The axis of rotation of the limiting rod 46 is parallel to the vertical direction, and the limiting rod 46 is located below the counterweight rod 43 in the vertical direction. When the limiting rod 46 rotates to the point where its length direction is parallel to the length direction of the counterweight rod 43, the limiting rod 46 restricts the first end of the counterweight rod 43 from rotating downward, thereby restricting the separation of the cover 32 connected to the first end of the counterweight rod 43 from the cage body 31, i.e., locking the counterweight rod 43. When the limiting rod 46 rotates to the point where its length direction is not parallel to the length direction of the counterweight rod 43, the first end of the counterweight rod 43 can rotate downward to separate the cover 32 from the cage body 31, i.e., unlocking the counterweight rod 43.

[0027] In some embodiments of this disclosure, the length direction of the second connecting rod 45 is parallel to the length direction of the first connecting rod 42, and the second connecting rod 45 and the first connecting rod 42 are spaced apart along the length direction of the fixed rod 41. By spaced the first connecting rod 42 and the second connecting rod 45, it can be ensured that the rotation of the counterweight rod 43 in the unlocked state is not affected by the second connecting rod 45.

[0028] In some embodiments of this disclosure, the connecting cage 20 includes an inclined cage section 21, one end of which is connected to the trapping cage 10, and the other end of which is connected to the storage cage 30. The angle between the inclined cage section 21 and the horizontal plane is greater than 0 degrees. The inclined cage section 21 allows the trapping cage 10, which is located underwater, to be connected to the storage cage 30, which is located above water.

[0029] In some embodiments of this disclosure, the angle between the inclined cage section 21 and the horizontal plane is less than 45 degrees, so as to facilitate shrimp and crab climbing.

[0030] In some embodiments of this disclosure, the connecting cage 20 includes a horizontal cage section 22, with the two ends of the horizontal cage section 22 connected to the inclined cage section 21 and the storage cage 30, respectively. The inclined cage section 21 and the storage cage 30 are connected through the horizontal cage section 22. The angle between the horizontal cage section 22 and the horizontal plane is equal to 0 degrees, and the length direction of the horizontal cage section 22 is parallel to the length direction of the fixed rod 41.

[0031] In some embodiments of this disclosure, when the device is installed in aquaculture waters, the distance between the bottom surface of the storage cage 30 and the water surface is greater than 50 centimeters, so that fishermen can open the cage cover 32 at the bottom of the storage cage 30 on the water surface. Fishermen can harvest shrimp and crabs by driving an automated aquaculture boat. The aquaculture boat is provided with arc-shaped handrails on both sides. When the arc-shaped handrails first touch the locking bar, the locking bar will move in the direction of the aquaculture boat's movement. As the aquaculture boat continues to move forward, the handrails will lift the counterweight bar 43, thereby causing the first end of the counterweight bar 43 to rotate upward, and the cage cover 32 to separate from the cage body 31.

[0032] In some embodiments of this disclosure, the trap 10 is a long, narrow cage 31 structure. The number of traps 10 can be two or more, and the two or more traps 10 can be connected in series. In addition, at least one trap 10 is connected to the connecting cage 20. Alternatively, the number of traps 10 can be one, and the middle part of the trap 10 is connected to the connecting cage 20.

[0033] It should be noted that the trap 10 in this embodiment is provided with a trap opening so that shrimp and crabs can enter. The trap 10, the connecting cage 20 and the storage cage 30 are each provided with mesh holes to allow for ventilation and prevent shrimp and crabs from climbing out.

[0034] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A shrimp and crab catching and collecting device, characterized in that, The device includes: A trap, the trap being placed underwater to trap shrimp and crabs; A connecting cage having a first end and a second end, the first end of the connecting cage being connected to the trapping cage, and the second end of the connecting cage being located above the first end in the vertical direction; A storage cage, comprising a cage body and a cage cover, the cage cover being disposed at the bottom of the cage body, the second end of the connecting cage being connected to the cage body, the storage cage being used to be placed on the water surface; A switch assembly is connected to the cage cover. Under the action of gravity, the switch assembly keeps the cage cover in a closed state, and the cage cover contacts the cage body to form a closed receiving space. Under the action of external force, the switch assembly is in an open state, and the cage cover separates from the cage body.

2. The shrimp and crab catching and collecting device according to claim 1, characterized in that, The device includes: a support member connected to the connecting cage or the storage cage, the support member extending vertically and used to be inserted into the mud at the bottom of the water.

3. The shrimp and crab catching and collecting device according to claim 2, characterized in that, The switching assembly includes: A fixing rod, the two ends of which are respectively connected to the support member and the top of the cage; A first connecting rod is connected to the fixed rod and extends in a vertical direction; The counterweight bar has a first end and a second end that are arranged opposite to each other. The first end of the counterweight bar is connected to the cage cover. The counterweight bar is rotatably connected to the end of the first connecting rod near the cage cover. The axis of rotation of the counterweight bar is perpendicular to the length direction of the fixed rod and perpendicular to the length direction of the first connecting rod. A gravity component, wherein the gravity component is disposed at the second end of the counterweight rod; Under the action of gravity, the first end of the counterweight rod causes the cage cover to abut against the cage body and form a closed receiving space. Under the action of external force, the first end of the counterweight rod separates the cage cover from the cage body.

4. The shrimp and crab catching and collecting device according to claim 3, characterized in that, The switching assembly further includes: The second connecting rod is connected to the fixed rod; A limiting rod is rotatably connected to the second connecting rod. The axis of rotation of the limiting rod is parallel to the vertical direction, and the limiting rod is located below the counterweight rod in the vertical direction.

5. The shrimp and crab catching and collecting device according to claim 4, characterized in that, The second connecting rod is arranged parallel to the first connecting rod, and the second connecting rod and the first connecting rod are spaced apart along the length direction of the fixed rod.

6. The shrimp and crab catching and collecting device according to claim 1, characterized in that, The connecting cage includes an inclined cage section, one end of which is connected to the trapping cage, and the other end of which is connected to the storage cage. The angle between the inclined cage section and the horizontal plane is greater than 0 degrees.

7. The shrimp and crab catching and collecting device according to claim 6, characterized in that, The angle between the inclined cage section and the horizontal plane is less than 45 degrees.

8. The shrimp and crab catching and collecting device according to claim 6, characterized in that, The connecting cage includes a horizontal cage section, the two ends of which are respectively connected to the inclined cage section and the storage cage. The inclined cage section and the storage cage are connected through the horizontal cage section, and the angle between the horizontal cage section and the horizontal plane is equal to 0 degrees.

9. The shrimp and crab catching and collecting device according to claim 1, characterized in that, When the device is installed in aquaculture waters, the distance between the bottom of the storage cage and the water surface is greater than 50 centimeters.

10. The shrimp and crab catching and collecting device according to claim 1, characterized in that, The trapping cage has a long, narrow cage structure.

Images