A freshwater shrimp and crab classification and fishing experimental device

Abstract

The present invention discloses a freshwater shrimp and crab classification fishing experimental device, which relates to the field of fishing technology, and comprises: a round frame, which is a cylinder, a sealing door is hinged on the front of the round frame, a circular arc block is fixedly connected to the bottom of the round frame, and a plug plate is fixedly connected to the bottom of the circular arc block; a connecting ball, a capture net is connected to the surface of the connecting ball, a top pipe is connected to the top of the connecting ball, and a broken hole is opened on the surface of the capture net. After the round frame is fixed to the inside of the river water by the plug plate, the capture net will float in the inside of the river water, and food is placed in the inside of the food-attracting tube. After the food evaporates in the water, it is discharged through the capture net, so that shrimps and crabs can enter the inside of the capture net through the volatilization of the food. After the shrimps and crabs enter the inside of the capture net, the conical net is used to prevent the shrimps and crabs entering the inside of the capture net from escaping, resulting in a reduced capture efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of fishing, and in particular to a freshwater shrimp and crab classification fishing experimental device. Background Art

[0002] River crabs, shrimps, such as Macrobrachium rosenbergii and green shrimp, and bottom-dwelling fishes, such as loaches, rice field eels, and sand snakeheads, are all bottom-dwelling aquatic organisms. They like to hide during the day and move at night. River crabs mainly crawl and like to climb, while shrimps mainly bounce and retreat. Bottom-dwelling fishes, such as loaches, rice field eels, and sand snakeheads, mainly swim close to the bottom intermittently and like to hide in holes.

[0003] At present, when shrimps and crabs are caught with ordinary ground traps, the capture net mouth of the ground trap is easy to break after long-term use, which causes shrimps and crabs to escape easily when caught, reducing the capture efficiency. Therefore, we proposed a freshwater shrimp and crab classification and fishing experimental device. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a freshwater shrimp and crab classification and catching experimental device, comprising:

[0005] A round frame, the round frame is a cylinder, a sealing door is hinged on the front of the round frame, a circular arc block is fixedly connected to the bottom of the round frame, and a plug plate is fixedly connected to the bottom of the circular arc block;

[0006] A connecting ball, the surface of which is connected to a capture net, the top of which is connected to a top pipe, and the surface of the capture net is provided with broken holes;

[0007] The inner wall of the capture net is fixedly connected with a tooth plate, an inclined plate is arranged inside the capture net, a conical net is fixedly connected inside the inclined plate, a spring plate is fixedly connected to the surface of the inclined plate, a tooth block is fixedly connected to the end of the spring plate away from the inclined plate, a circular ring plate is fixedly connected inside the capture net, an adjustment mechanism is arranged inside the broken hole, an arc block is arranged at the bottom of the circular frame to increase the weight of the circular frame so that when the circular frame is placed inside the canal, the circular frame keeps the capture net above through the arc block to increase stability, a plug plate is arranged at the bottom of the arc block, when the circular frame is inside the river with more silt, the circular frame is fixed to the inside of the silt through the plug plate to increase stability, a food-luring tube is arranged inside the top pipe, a top plate is arranged on the top of the food-luring tube, and a pushing mechanism is arranged at the bottom of the connecting ball.

[0008] Furthermore, the bottom of the connecting ball is connected to the top of the circular frame, the end of the inclined plate is arranged inside the circular ring plate, the tooth plate and the tooth block are meshed with each other, and the circular ring plate contacts the surface of the tooth block.

[0009] Further, the adjustment mechanism includes a circular ring frame, an adjustment rod, a slide plate, a carriage and an auxiliary mechanism, the slide plate is fixedly connected to the inner wall of the broken hole, a slide plate is arranged inside the broken hole to limit the carriage, an adjustment rod is arranged on the surface of the circular ring frame, so that the adjustment rod can push the circular ring frame to rotate, the inner wall of the carriage contacts the surface of the slide plate, the end of the circular ring frame is fixedly connected to the carriage, the adjustment rod is fixedly connected to the surface of the circular ring frame, and an auxiliary mechanism is arranged inside the capture net;

[0010] The circular ring frame is slidably connected with the surface of the slide plate through a slide frame.

[0011] Furthermore, the inner wall of the circular ring frame is movably connected to the inclined plate via a rotating shaft, and one end of the slide away from the circular ring frame contacts the inner wall of the broken hole.

[0012] Furthermore, the auxiliary mechanism includes a circular telescopic rod, a semicircular frame, a movable plate and a seesaw. The circular telescopic rod is movably connected to the inclined plate through a rotating shaft. The circular telescopic rod is arranged inside the conical net. The inner wall of the end of the conical net is squeezed by the circular telescopic rod to avoid the conical net from wrinkling and contacting each other, resulting in reduced capture efficiency. The semicircular frame contacts the surface of the circular telescopic rod, and the seesaw is rotatably connected to the semicircular frame through the movable plate.

[0013] The seesaw is movably connected to the inner wall of the capture net via a rotating shaft.

[0014] Furthermore, a threaded rack is fixedly connected to the bottom of the top plate, a positioning block is fixedly connected to the surface of the food-luring tube, a positioning hole is opened on the inner wall of the top tube, a sliding hole rack is fixedly connected to the inside of the food-luring tube, a circular plate is arranged inside the food-luring tube, a positioning block is arranged on the surface of the food-luring tube, the surface of the positioning block contacts the inner wall of the positioning hole, so that the inclined block can always contact the surface of the push block, the circular plate is slidably connected to the inner wall of the sliding hole rack through the sliding plate, so that the circular plate can push the food to move inside the food-luring tube to prevent the food from settling inside the food-luring tube, and the surface of the circular plate is provided with a sliding plate;

[0015] The threaded frame is threadedly connected with the top of the inner wall of the food-inducing tube.

[0016] Furthermore, the circular plate is slidably connected to the inner wall of the sliding hole frame via a sliding plate, and the surface of the positioning block is in contact with the inner wall of the positioning hole.

[0017] Furthermore, the pushing mechanism comprises an inclined block, a pushing block, a pushing rod, a cylindrical rod, a cylindrical rod and a bent plate, wherein the inclined block is fixedly connected to the bottom of the circular plate, the pushing block is fixedly connected to the surface of the cylindrical rod through the pushing rod, the cylindrical rod is fixedly connected to the bottom inner wall of the connecting ball, and the bottom of the bent plate is fixedly connected to the bottom of the cylindrical rod;

[0018] The number of the cylindrical rods is two.

[0019] Further, the cylindrical rod contacts the surface of the cylindrical rod, and the surface of the push block contacts the bottom surface of the inclined block.

[0020] The present invention has the beneficial effects:

[0021] After the circular frame is fixed in the river water by the plug plate, the capture net will float in the river water, and food is placed in the feeding tube. After the food evaporates in the water, it is discharged through the capture net, so that shrimps and crabs can enter the capture net through the volatilization of the food. After the shrimps and crabs enter the capture net, the conical net is used to prevent the shrimps and crabs from escaping and reducing the capture efficiency. An inclined plate is arranged on the surface of the conical net to increase the service life of the conical net and prevent the conical nets from being entangled and causing shrimps and crabs to be unable to enter the capture net.

[0022] When the inclined plate needs to be adjusted, the circular ring frame is rotated by twisting the adjusting rod, the inclined plate drives the tooth block to rotate through the rotation of the circular ring frame, the tooth block adjusts the inclined plate through the rotation of the tooth plate, and the cone net adjusts the size of the internal space through the movement of the inclined plate, so as to avoid the cone net being broken and causing the internal space to be larger.

[0023] When the shrimps and crabs move inside the conical net of the present invention, the inclined plate is pressed by the weight of the shrimps and crabs to move downward, and the inclined plate will press one end of the seesaw plate to move downward through the movable plate when moving downward, and the seesaw plate will move the river water inside the capture net to impact the shrimps and crabs, so that the shrimps and crabs can quickly enter the interior of the circular frame for storage, thereby increasing the efficiency of catching shrimps and crabs.

[0024] When shrimps and crabs enter the interior of the connecting ball through the catching net of the present invention, the shrimps and crabs will slide downward inside the connecting ball and enter the interior of the round frame for storage. When entering the interior of the round frame, the shrimps and crabs will hit the bent plate to move. When moving, the bent plate will push the cylindrical rod to rotate on the surface of the cylindrical rod. The push rod utilizes the push block to squeeze the inclined block to move upward through the rotation of the cylindrical rod. When moving, the inclined block will push the circular plate to move up and down inside the food-luring tube. When moving up and down, the circular plate will push the food to float up and down inside the food-luring tube, thereby preventing the food from settling on the surface of the circular plate and causing the temptation to be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the front cross-sectional structure of the capture net of the present invention;

[0027] Figure 3 This is a schematic diagram of the front view and cross-sectional structure of the cone net of the present invention;

[0028] Figure 4 It is a schematic diagram of the overall structure of the circular telescopic rod of the present invention;

[0029] Figure 5 This is a schematic diagram of the front cross-sectional structure of the connecting ball of the present invention;

[0030] Figure 6 It is a schematic diagram of the front view and cross-section structure of the feeding tube of the present invention.

[0031] 1. Round frame; 2. Arc block; 3. Insert plate; 4. Sealing door; 5. Break hole; 6. Catch net; 7. Connecting ball; 8. Push pipe; 10. Feeding tube; 11. Push plate; 12. Pushing mechanism; 13. Circular ring plate; 14. Inclined plate; 15. Tooth plate; 16. Spring plate; 17. Conical net; 18. Tooth block; 19. Adjustment mechanism; 20. Circular frame; 21. Adjustment rod; 22. Slide plate; 23. Slide frame; 25. Auxiliary mechanism; 30. Circular telescopic rod; 31. Semicircular frame; 32. Movable plate; 33. Seesaw; 40. Positioning hole; 41. Threaded frame; 42. Positioning block; 43. Sliding hole frame; 44. Sliding plate; 45. Circular plate; 50. Inclined block; 51. Push block; 52. Push rod; 53. Cylindrical rod; 54. Cylindrical rod; 55. Bending plate. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0033] Example 1

[0034] See also Figure 1-Figure 5 The present invention is a freshwater shrimp and crab classification and fishing experimental device, comprising:

[0035] The round frame 1 is a cylinder, a sealing door 4 is hinged on the front of the round frame 1, a circular arc block 2 is fixedly connected to the bottom of the round frame 1, and a plug plate 3 is fixedly connected to the bottom of the circular arc block 2;

[0036] A connecting ball 7, the surface of which is connected to a catching net 6, the top of which is connected to a top pipe 8, a broken hole 5 is provided on the surface of the catching net 6, and the bottom of the connecting ball 7 is connected to the top of the round frame 1;

[0037] The inner wall of the capture net 6 is fixedly connected with a tooth plate 15, an inclined plate 14 is arranged inside the capture net 6, a cone net 17 is fixedly connected inside the inclined plate 14, a spring plate 16 is fixedly connected to the surface of the inclined plate 14, a tooth block 18 is fixedly connected to the end of the spring plate 16 away from the inclined plate 14, a circular ring plate 13 is fixedly connected to the inside of the capture net 6, and an adjustment mechanism 19 is arranged inside the broken hole 5. After the circular frame 1 is fixed to the inside of the river water by the plug plate 3 of the present invention, the capture net 6 will float inside the river water, and the food is placed inside the food-luring tube 10. After the food evaporates in the water, it is discharged through the capture net 6, and the end of the cone net 17 with a smaller opening is close to the river water. On one side of the connecting ball 7, the end of the cone net 17 with a larger opening is arranged inside the circular ring frame 20, so that shrimps and crabs can enter the interior of the capture net 6 through the volatilization of food. After the shrimps and crabs enter the interior of the capture net 6, the cone net 17 prevents the shrimps and crabs from escaping, resulting in reduced capture efficiency. An inclined plate 14 is arranged on the surface of the cone net 17 to increase the service life of the cone net 17 and prevent the cone net 17 from being entangled together, resulting in shrimps and crabs being unable to enter the interior of the capture net 6. A feeding tube 10 is arranged inside the top pipe 8, and a top plate 11 is arranged on the top of the feeding tube 10. A pushing mechanism 12 is arranged at the bottom of the connecting ball 7.

[0038] The bottom of the connecting ball 7 is connected to the top of the circular frame 1, the end of the inclined plate 14 is arranged inside the circular ring plate 13, the tooth plate 15 is meshed with the tooth block 18, and the tooth plate 15 and the tooth block 18 are provided with threaded teeth at one end close to each other. The tooth plate 15 and the tooth block 18 are meshed with each other through the threaded teeth. The tooth plate 15 adjusts the inclined plate 14 by rotating the tooth block 18, and the circular ring plate 13 contacts the surface of the tooth block 18.

[0039] The adjustment mechanism 19 includes a circular frame 20, an adjustment rod 21, a slide plate 22, a slide 23 and an auxiliary mechanism 25. The slide plate 22 is fixedly connected to the inner wall of the broken hole 5, the inner wall of the slide 23 contacts the surface of the slide plate 22, the slide plate 22 is arranged inside the slide 23, the upper and lower surfaces of the slide plate 22 contact the upper and lower inner walls of the slide 23, and the end of the circular frame 20 is fixedly connected to the slide 23. When the present invention needs to adjust the inclined plate 14, the circular frame 20 is rotated by twisting the adjustment rod 21. The adjustment rod 21 is arranged at the outer end of the capture net 6, and the inclined plate 14 drives the tooth block through the rotation of the circular frame 20 18 rotates, the end of the inclined plate 14 away from the spring plate 16 is rotatably connected to the inner wall of the ring frame 20, the tooth block 18 adjusts the inclined plate 14 through the rotation of the tooth plate 15, and the cone net 17 adjusts the size of the internal space through the movement of the inclined plate 14, the inclined plate 14 is close to the end with a smaller opening of the cone net 17, and the size of the end with a smaller opening of the cone net 17 is adjusted through the engagement of the tooth block 18 and the tooth plate 15, so as to avoid the cone net 17 from breaking and causing the internal space to be larger, the adjustment rod 21 is fixedly connected to the surface of the ring frame 20, and an auxiliary mechanism 25 is arranged inside the capture net 6;

[0040] The circular ring frame 20 is slidably connected to the surface of the slide plate 22 via the slide frame 23 .

[0041] The inner wall of the circular frame 20 is rotatably connected to the inclined plate 14 , one end of the slide 23 away from the circular frame 20 contacts the inner wall of the broken hole 5 , and the end surface of the slide 23 away from the circular frame 20 is slidably connected to the inner wall of the broken hole 5 .

[0042] The auxiliary mechanism 25 includes a circular telescopic rod 30, a semicircular frame 31, a movable plate 32 and a seesaw 33. The circular telescopic rod 30 is rotatably connected to the inner wall of the inclined plate 14, and the semicircular frame 31 is in contact with the surface of the circular telescopic rod 30. When the shrimps and crabs of the present invention move inside the conical net 17, the inclined plate 14 is pressed by the weight of the shrimps and crabs to move downward. When the shrimps and crabs crawl into the inside of the capture net 6, the shrimps and crabs will crawl into the inside of the conical net 17. The conical net 17 is supported by the inclined plate 14, so that when the shrimps and crabs are inside the conical net 17, the inclined plate 14 will be subjected to pressure, and the inclined plate 14 will press the elastic plate 16 to shrink. When the inclined plate 14 moves downward, the elastic plate 16 will shrink. When the seesaw 33 moves, one end of the seesaw 33 will be squeezed by the movable plate 32 to move downward. The seesaw 33 is set to a lever principle. The end of the seesaw 33 close to the movable plate 32 is pressed and the other end will tilt upward. When the seesaw 33 moves downward, the river water inside the capture net 6 will impact the shrimps and crabs, so that the shrimps and crabs quickly enter the inside of the round frame 1 for storage. The end of the seesaw 33 away from the movable plate 32 tilts upward, so that the seesaw 33 will push the water flow to the inside of the capture net 6, thereby increasing the efficiency of catching shrimps and crabs. The seesaw 33 is rotatably connected to the semicircular frame 31 through the movable plate 32, and the seesaw 33 is rotatably connected to the movable plate 32, so as to improve the lubricity of squeezing the seesaw 33.

[0043] The seesaw 33 is rotatably connected to the inner wall of the capture net 6 .

[0044] A threaded frame 41 is fixedly connected to the bottom of the top plate 11, a positioning block 42 is fixedly connected to the surface of the food-luring tube 10, a positioning hole 40 is opened on the inner wall of the top tube 8, a sliding hole frame 43 is fixedly connected to the inside of the food-luring tube 10, a circular plate 45 is arranged inside the food-luring tube 10, and a sliding plate 44 is arranged on the surface of the circular plate 45. The positioning block 42 is limited by the positioning hole 40 to facilitate the insertion of the food-luring tube 10 into the inside of the top tube 8. A circular plate 45 is arranged inside the food-luring tube 10, and the circular plate 45 is slidably connected to the inner wall of the sliding hole frame 43 through the sliding plate 44, so that the circular plate 45 can float inside the food-luring tube 10 to prevent the food from settling inside the food-luring tube 10.

[0045] The threaded frame 41 is threadedly connected to the top of the inner wall of the food-inducing tube 10 .

[0046] The circular plate 45 is slidably connected to the inner wall of the sliding hole frame 43 via the sliding plate 44 , and the surface of the positioning block 42 contacts the inner wall of the positioning hole 40 .

[0047] Example 2

[0048] See also Figure 1-Figure 6 The present invention is a freshwater shrimp and crab classification and fishing experimental device, comprising:

[0049] The round frame 1 is a cylinder, a sealing door 4 is hinged on the front of the round frame 1, a circular arc block 2 is fixedly connected to the bottom of the round frame 1, and a plug plate 3 is fixedly connected to the bottom of the circular arc block 2;

[0050] A connecting ball 7, the surface of which is connected to a catching net 6, the top of which is connected to a top pipe 8, a broken hole 5 is provided on the surface of the catching net 6, and the bottom of the connecting ball 7 is connected to the top of the round frame 1;

[0051] A tooth plate 15 is fixedly connected to the inner wall of the capture net 6, an inclined plate 14 is arranged inside the capture net 6, a conical net 17 is fixedly connected inside the inclined plate 14, a spring plate 16 is fixedly connected to the surface of the inclined plate 14, a tooth block 18 is fixedly connected to the end of the spring plate 16 away from the inclined plate 14, a circular ring plate 13 is fixedly connected inside the capture net 6, an adjustment mechanism 19 is arranged inside the breaking hole 5, an induced feeding tube 10 is arranged inside the top pipe 8, a top plate 11 is arranged on the top of the induced feeding tube 10, and a pushing mechanism 12 is arranged at the bottom of the connecting ball 7.

[0052] The bottom of the connecting ball 7 is connected to the top of the circular frame 1 , the end of the inclined plate 14 is arranged inside the circular ring plate 13 , the tooth plate 15 and the tooth block 18 are meshed with each other, and the circular ring plate 13 contacts the surface of the tooth block 18 .

[0053] The adjusting mechanism 19 includes a circular frame 20, an adjusting rod 21, a slide plate 22, a carriage 23 and an auxiliary mechanism 25, wherein the slide plate 22 is fixedly connected to the inner wall of the broken hole 5, the inner wall of the carriage 23 contacts the surface of the slide plate 22, the end of the circular frame 20 is fixedly connected to the carriage 23, the adjusting rod 21 is fixedly connected to the surface of the circular frame 20, and the auxiliary mechanism 25 is arranged inside the capture net 6;

[0054] The circular ring frame 20 is slidably connected to the surface of the slide plate 22 via the slide frame 23 .

[0055] The inner wall of the circular ring frame 20 is rotatably connected to the inclined plate 14 , and one end of the slide 23 away from the circular ring frame 20 contacts the inner wall of the broken hole 5 .

[0056] The auxiliary mechanism 25 includes a circular telescopic rod 30, a semicircular frame 31, a movable plate 32 and a seesaw 33. The circular telescopic rod 30 is movably connected to the inclined plate 14 through a rotating shaft, the semicircular frame 31 is in contact with the surface of the circular telescopic rod 30, and the seesaw 33 is rotatably connected to the semicircular frame 31 through the movable plate 32.

[0057] The seesaw 33 is movably connected to the inner wall of the capture net 6 via a rotating shaft.

[0058] A threaded frame 41 is fixedly connected to the bottom of the top plate 11, a positioning block 42 is fixedly connected to the surface of the food-inducing tube 10, a positioning hole 40 is opened on the inner wall of the top tube 8, a sliding hole frame 43 is fixedly connected to the inside of the food-inducing tube 10, a circular plate 45 is arranged inside the food-inducing tube 10, and a sliding plate 44 is arranged on the surface of the circular plate 45;

[0059] The threaded frame 41 is threadedly connected to the top of the inner wall of the food-inducing tube 10 .

[0060] The circular plate 45 is slidably connected to the inner wall of the sliding hole frame 43 via the sliding plate 44 , and the surface of the positioning block 42 contacts the inner wall of the positioning hole 40 .

[0061] The pushing mechanism 12 includes an inclined block 50, a pushing block 51, a pushing rod 52, a cylindrical rod 53, a cylindrical rod 54 and a bent plate 55. The inclined block 50 is fixedly connected to the bottom of the circular plate 45, and the pushing block 51 is fixedly connected to the surface of the cylindrical rod 54 through the pushing rod 52. When the shrimps and crabs of the present invention enter the interior of the connecting ball 7 through the catching net 6, the shrimps and crabs will slide downward inside the connecting ball 7 and enter the interior of the round frame 1 for storage. When the shrimps and crabs enter the interior of the round frame 1, they will hit the bent plate 55 to move, and the bent plate 55 will push the The cylindrical rod 54 rotates on the surface of the cylindrical rod 53, and the push rod 52 uses the push block 51 to press the inclined block 50 to move upward through the rotation of the cylindrical rod 54. When the inclined block 50 moves, it pushes the circular plate 45 to move up and down inside the food-attracting tube 10. When the circular plate 45 moves up and down, it pushes the food to float up and down inside the food-attracting tube 10, so as to prevent the food from settling on the surface of the circular plate 45 and causing the temptation to decrease. The cylindrical rod 53 is fixedly connected to the bottom inner wall of the connecting ball 7, and the bottom of the curved plate 55 is fixedly connected to the bottom of the cylindrical rod 54;

[0062] The number of the cylindrical rods 54 is two.

[0063] The cylindrical rod 54 contacts the surface of the cylindrical rod 53, and the surface of the push block 51 contacts the bottom surface of the inclined block 50. When shrimps and crabs enter the interior of the round frame 1, they fall into the interior of the round frame 1 through the connecting ball 7. When falling into the interior of the round frame 1, the shrimps and crabs will hit the bent plate 55, and the bent plate 55 will move the inner wall of the box connecting ball 7 when hit. At the same time, the cylindrical rod 54 moves the push block 51 to squeeze the inclined block, so that the round plate 45 floats inside the 0 feeding tube 10.

[0064] A specific application of this embodiment is: after the circular frame 1 is fixed inside the river water by the plug plate 3, the capture net 6 will float inside the river water, and the food is placed inside the food-attracting tube 10. After the food evaporates in the water, it is discharged through the capture net 6, so that shrimps and crabs can enter the capture net 6 through the volatilization of the food. After the shrimps and crabs enter the capture net 6, the conical net 17 is used to prevent the shrimps and crabs entering the capture net 6 from escaping, resulting in reduced capture efficiency. An inclined plate 14 is provided on the surface of the conical net 17 to increase the service life of the conical net 17. When the inclined plate 14 needs to be adjusted, the circular frame 20 is twisted and rotated by the adjusting rod 21. The inclined plate 14 drives the tooth block 18 to rotate through the rotation of the circular frame 20. The tooth block 18 adjusts the inclined plate 14 through the rotation of the tooth plate 15. When the part moves, the inclined plate 14 is pressed by the weight of the shrimps and crabs to move downward, and the inclined plate 14 will press one end of the seesaw 33 downward through the movable plate 32 when moving downward. When the seesaw 33 moves downward, it will move the river water inside the capture net 6 to impact the shrimps and crabs, so that the shrimps and crabs can quickly enter the interior of the round frame 1 for storage. When the shrimps and crabs enter the interior of the connecting ball 7 through the capture net 6, the shrimps and crabs will slide downward inside the connecting ball 7 and enter the interior of the round frame 1 for storage. When the shrimps and crabs enter the interior of the round frame 1, they will hit the bent plate 55 to move. When the bent plate 55 moves, it will push the cylindrical rod 54 to rotate on the surface of the cylindrical rod 53. The push rod 52 uses the push block 51 to squeeze the inclined block 50 upward through the rotation of the cylindrical rod 54. When the inclined block 50 moves, it will push the circular plate 45 to move up and down inside the food-attracting tube 10.

[0065] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A freshwater shrimp and crab classification fishing experimental device, characterized in that: include: A round frame (1), the round frame (1) is a cylinder, a sealing door (4) is hingedly connected to the front of the round frame (1), a circular arc block (2) is fixedly connected to the bottom of the round frame (1), and a plug plate (3) is fixedly connected to the bottom of the circular arc block (2); A connecting ball (7), the surface of the connecting ball (7) is connected to a capture net (6), the top of the connecting ball (7) is connected to a top pipe (8), a broken hole (5) is opened on the surface of the capture net (6), and the bottom of the connecting ball (7) is connected to the top of the round frame (1); The inner wall of the capture net (6) is fixedly connected with a tooth plate (15), an inclined plate (14) is arranged inside the capture net (6), a conical net (17) is fixedly connected inside the inclined plate (14), a spring plate (16) is fixedly connected to the surface of the inclined plate (14), a tooth block (18) is fixedly connected to the end of the spring plate (16) away from the inclined plate (14), a circular ring plate (13) is fixedly connected inside the capture net (6), an adjustment mechanism (19) is arranged inside the breaking hole (5), a food-inducing tube (10) is arranged inside the top pipe (8), a top plate (11) is arranged on the top of the food-inducing tube (10), and a material pushing mechanism (12) is arranged at the bottom of the connecting ball (7); The bottom of the connecting ball (7) is connected to the top of the circular frame (1), the end of the inclined plate (14) is arranged inside the circular ring plate (13), the tooth plate (15) and the tooth block (18) are meshed with each other, and the surface of the circular ring plate (13) and the tooth block (18) are in contact; The adjusting mechanism (19) comprises a circular frame (20), an adjusting rod (21), a slide plate (22), a carriage (23) and an auxiliary mechanism (25), wherein the slide plate (22) is fixedly connected to the inner wall of the broken hole (5), the inner wall of the carriage (23) contacts the surface of the slide plate (22), the end of the circular frame (20) is fixedly connected to the carriage (23), the adjusting rod (21) is fixedly connected to the surface of the circular frame (20), and the auxiliary mechanism (25) is arranged inside the capturing net (6); The circular ring frame (20) is slidably connected to the surface of the slide plate (22) via a slide frame (23); The bottom of the top plate (11) is fixedly connected to a threaded frame (41), the surface of the food-inducing tube (10) is fixedly connected to a positioning block (42), the inner wall of the top tube (8) is provided with a positioning hole (40), the interior of the food-inducing tube (10) is fixedly connected to a sliding hole frame (43), the interior of the food-inducing tube (10) is provided with a circular plate (45), and the surface of the circular plate (45) is provided with a sliding plate (44); The threaded frame (41) is threadedly connected to the top of the inner wall of the food-inducing tube (10); The circular plate (45) is slidably connected to the inner wall of the sliding hole frame (43) via a sliding plate (44), and the surface of the positioning block (42) is in contact with the inner wall of the positioning hole (40).

2. A freshwater shrimp and crab classification and fishing experimental device according to claim 1, characterized in that: The inner wall of the circular ring frame (20) is rotatably connected to the inclined plate (14), and one end of the slide frame (23) away from the circular ring frame (20) contacts the inner wall of the broken hole (5).

3. The freshwater shrimp and crab classification and catching experimental device according to claim 1 is characterized by: The auxiliary mechanism (25) comprises a circular telescopic rod (30), a semicircular frame (31), a movable plate (32) and a seesaw (33); the circular telescopic rod (30) is movably connected to the inclined plate (14) via a rotating shaft; the semicircular frame (31) contacts the surface of the circular telescopic rod (30); and the seesaw (33) is rotatably connected to the semicircular frame (31) via the movable plate (32); The seesaw (33) is movably connected to the inner wall of the capture net (6) via a rotating shaft.

4. The freshwater shrimp and crab classification and catching experimental device according to claim 1 is characterized by: The pushing mechanism (12) comprises an inclined block (50), a pushing block (51), a pushing rod (52), a cylindrical rod (53), a cylindrical rod (54) and a bent plate (55); the inclined block (50) is fixedly connected to the bottom of the circular plate (45); the pushing block (51) is fixedly connected to the surface of the cylindrical rod (54) through the pushing rod (52); the cylindrical rod (53) is fixedly connected to the bottom inner wall of the connecting ball (7); and the bottom of the bent plate (55) is fixedly connected to the bottom of the cylindrical rod (54); The number of the cylindrical rods (54) is two.

5. The freshwater shrimp and crab classification and catching experimental device according to claim 4 is characterized by: The cylindrical rod (54) contacts the surface of the cylindrical rod (53), and the surface of the push block (51) contacts the bottom surface of the inclined block (50).

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