A device for enhancing fishway entrance and exit fish attraction effect and a method thereof

Abstract

The application relates to the technical field of fish luring devices, and discloses a device for enhancing the fish luring effect of the import and export of a fishway and a method thereof. The device comprises a mounting frame and a shell fixed on the top of the mounting frame. Chain wheels are symmetrically and rotatably arranged on the front side of the shell. Two chain wheels are connected through a chain belt. A connecting plate is fixedly arranged on the front side of the chain belt. The device forms an adjusting flow field at the fishway through a generating assembly, so that an adjusting flow field suitable for migratory fish is formed. Fish stay in the adjusting flow field for a long time, so that the fish easily find the import of the fishway. The fish are guided by the lamp tube, so that the probability of the fish entering the fishway is greatly improved. The lamp tube can be cleaned before entering water, so that the light emitting effect of the lamp tube is not affected by impurities, the fish luring effect is better, and the lamp tube can avoid being hit and broken when the fish lures the lamp tube.

Description

Technical Field

[0001] This invention relates to the field of fish-attracting devices, and in particular to a device and method for enhancing the fish-attracting effect at the inlet and outlet of a fish passage. Background Technology

[0002] Fishways are channels for fish migration. Remedial measures taken when human activities disrupt these channels typically involve constructing artificial channels on sluice gates or dams to protect fish behavior. The water flow at the fishway entrance must meet two conditions: firstly, it should be suitable for fish to gather, and secondly, it should allow fish to quickly locate the fishway entrance.

[0003] Setting up fish-attracting devices at fish passages can enhance the attraction of fish. Chinese patent application number 202311306484.8 discloses a flow field regulating device and a fish-attracting system for regulating the flow field at the fish passage inlet. This system controls the size of the water jet from the jet pipe through a controller, so that the river channel forms a regulating flow field suitable for migratory fish at the fish passage inlet, allowing fish to stay in the regulating flow field area for a long time, thereby making it easier for fish to find the fish passage inlet and improving the fish passage efficiency at the fish passage inlet. However, this system can only attract fish to stay by creating a regulating flow field, but it cannot better guide fish into the fish passage.

[0004] Therefore, it is necessary to invent a device and method for enhancing the fish-attracting effect at the fishway entrance and exit to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a device and method for enhancing the fish-attracting effect at fishway inlets and outlets, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for enhancing the fish-attracting effect at the fishway inlet and outlet, comprising a mounting frame and a housing fixed to the top of the mounting frame. Sprockets are symmetrically and rotatably mounted on the front side of the housing, and the two sprockets are connected by a chain belt. A connecting plate is fixedly mounted on the front side of the chain belt. A mounting base is fixedly mounted at one end of the connecting plate. A lamp tube is connected to the mounting base via a connector. A guide rail is fixedly mounted on one side of the connector. A slider is slidably mounted inside the guide rail. A ring plate is sleeved on the outside of the lamp tube. An air bladder is fixedly mounted on the inner side of the ring plate. The ring plate is fixedly connected to the slider. An air injection component for injecting air into the air bladder is provided on the outer side of the connecting plate. A generating component for creating a regulating flow field in water is provided inside the mounting frame. A drive component for controlling the activation of the generating component and the rotation of the sprockets is provided on the mounting frame.

[0007] Furthermore, the air injection assembly includes a cylinder fixedly installed on one side of the connecting plate. The side of the cylinder near the air bladder is connected to the air bladder through a telescopic tube. A piston is provided inside the cylinder. A spring is fixedly installed on the side of the piston near the connecting plate. A push rod is fixedly installed on the side of the piston away from the connecting plate. One end of the push rod extends out of the cylinder. A compression plate is fixedly installed on the front side of the mounting bracket. One end of the compression plate is provided with an inclined surface that cooperates with the push rod.

[0008] Furthermore, the connecting plate has a cavity inside, and a rotating rod is rotatably mounted on the end of the connecting plate away from the lamp tube. One end of the rotating rod extends into the cavity, and a rotating component for driving its rotation is provided at one end of the rotating rod. The connecting member is specifically a ball-head rod, and the mounting base is a ball-head sleeve. The connecting member is rotatably disposed inside the mounting base. The side of the connecting member near the rotating rod has a notch surface. The middle part of the mounting base near the cavity has a wire-passing hole communicating with the cavity. The end of the rotating rod located inside the cavity has a wire-retrieving groove. A pull rope is fixedly connected in the wire-retrieving groove, and the other end of the pull rope passes through the wire-passing hole and is fixedly connected to the middle part of the notch surface of the connecting member.

[0009] Furthermore, the rotating assembly includes a gear fixedly installed on the side of the rotating rod away from the connecting member, a torsion spring is sleeved on the outside of the rotating rod, the two ends of the torsion spring are fixedly connected to the rotating rod and the connecting plate respectively, and a mounting plate is fixedly installed on the front side of the housing, and the lower front side of the mounting plate is provided with teeth that cooperate with the gear at equal intervals.

[0010] Furthermore, the generating component includes a sliding frame slidably mounted within a mounting bracket. Spray pipes are fixedly mounted at equal intervals inside the sliding frame, and spray holes are provided at equal intervals on the outer side of each spray pipe. Multiple spray pipes are connected by connecting pipes. A water pump is fixedly mounted on the outer side of the mounting bracket, and the water delivery end of the water pump is connected to the spray pipes via a flexible hose. A fish detection component is fixedly mounted inside the sliding frame.

[0011] Furthermore, the drive assembly includes a first motor and a second motor fixedly mounted on the top of the mounting frame. The output shaft of the first motor extends outside the housing and is fixedly connected to the middle of one of the sprockets. The top of the sliding frame is provided with drive teeth at equal intervals. Side plates are symmetrically fixedly mounted on the top of the mounting frame. A drive gear that meshes with the drive teeth is rotatably mounted between the two side plates. One end of the output shaft of the second motor is fixedly connected to one end of the drive gear. The top of the mounting frame is provided with a controller for controlling the starting of the water pump, the first motor, the lamp tube, and the second motor.

[0012] Furthermore, the lamp is a fish-attracting lamp.

[0013] The method for attracting fish using the device described above for enhancing the fish-attracting effect at the fishway inlet and outlet includes the following steps:

[0014] S1. When in use, the mounting bracket is set at the fishway inlet and outlet. When fish migrate, the light tube is turned on, and the driving component drives the generator to work, adjusting the flow field at the fishway, thereby forming a suitable flow field for migrating fish, allowing the fish to stay in the flow field area for a long time, thus making it easier for the fish to find the fishway inlet.

[0015] S2. The drive assembly drives the sprocket to rotate the chain belt, causing the drive connecting plate to move along with the mounting base, connector, lamp tube, guide rail, slider, ring plate, and airbag. When the lamp tube enters the water from a horizontal position, the air injection assembly injects air into the airbag to make it expand and fit against the lamp tube. When the lamp tube rotates to an angled downward position but has not yet entered the water, the end of the lamp tube away from the connecting plate is angled downward. At this time, under the action of gravity, the ring plate moves downward with the airbag, which carries the impurities on the surface of the lamp tube downward, thus cleaning the lamp tube. Subsequently, the lamp tube enters the water, and the impurities accumulated at the bottom of the lamp tube are washed away by the water.

[0016] S3. The light emitted by the lamp attracts fish. As the lamp moves, it guides the fish towards the fish passage. The lamp then leaves the water, and the fish, noticing the fish passage, move inwards. At this point, the air injection component stops inflating, causing the air bladder to deflate and separate from the lamp surface. When the lamp exits the water, impurities adhere to its surface. As the lamp continues to move, it rotates at an angle, causing the bottom to tilt upwards. Under gravity, the ring plate moves towards the connecting plate. During this process, because the air bladder does not contact the lamp, impurities are not carried by the air bladder to the position near the connecting plate. When the lamp re-enters the water, the same principle applies, continuously cleaning the impurities from the lamp's surface before it enters the water, preventing impurities from affecting its luminous effect. The movement of the lamp, combined with the resulting regulating flow field, effectively guides fish towards the fish passage.

[0017] The technical effects and advantages of this invention are as follows:

[0018] 1. This invention creates a regulating flow field at the fishway by generating components, thereby creating a suitable regulating flow field for migratory fish, allowing the fish to stay in the regulating flow field area for a long time, making it easier for the fish to find the entrance of the fishway. Combined with the guidance of the light tube, this greatly increases the probability of the fish entering the fishway.

[0019] 2. This invention allows the lamp tube to be cleaned before it is submerged in water, preventing impurities from affecting its luminous effect and ensuring better fish attraction;

[0020] 3. This invention can avoid damage to the light tube when it is hit by a fish during the process of attracting fish with the light tube. Attached Figure Description

[0021] Figure 1This diagram illustrates the structure of a device for enhancing the fish-attracting effect at the fishway inlet and outlet according to an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This diagram illustrates the structure of a device for enhancing the fish-attracting effect at the fishway inlet and outlet according to an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 An embodiment of the present invention is shown. Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 A cross-sectional structural schematic diagram of a device for enhancing the fish-attracting effect at the fishway inlet and outlet according to an embodiment of the present invention is shown;

[0025] Figure 5 An embodiment of the present invention is shown. Figure 4 Enlarged structural diagram at point B;

[0026] Figure 6 A schematic diagram of a portion of the structure of an embodiment of the present invention is shown;

[0027] Figure 7 An embodiment of the present invention is shown. Figure 6 Enlarged structural diagram at point C;

[0028] Figure 8 A schematic diagram of the generating component according to an embodiment of the present invention is shown;

[0029] In the diagram: 1. Mounting frame; 2. Sprocket; 3. Chain belt; 4. Connecting plate; 5. Mounting base; 6. Connector; 7. Lamp tube; 8. Guide rail; 9. Slider; 10. Ring plate; 11. Airbag; 12. Cylinder; 13. Telescopic tube; 14. Piston; 15. Push rod; 16. Spring; 17. Extrusion plate; 18. Inclined surface; 19. Rotating rod; 20. Pull rope; 21. Torsion spring; 22. Gear; 23. Mounting plate; 24. Tooth; 25. First motor; 26. Controller; 27. Sliding frame; 28. Nozzle; 29. ​​Water pump; 30. Fish detection component; 31. Drive tooth; 32. Drive gear; 33. Second motor; 34. Housing. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] Example: A device for enhancing the fish-attracting effect at the fishway inlet and outlet, such as... Figures 1 to 8As shown, the device includes a mounting frame 1 and a housing 34 fixed to the top of the mounting frame 1. Sprockets 2 are symmetrically and rotatably mounted on the front side of the housing 34. The two sprockets 2 are connected by a chain belt 3. A connecting plate 4 is fixedly mounted on the front side of the chain belt 3. A mounting base 5 is fixedly mounted on one end of the connecting plate 4. A lamp tube 7 is connected to the mounting base 5 by a connector 6. A guide rail 8 is fixedly mounted on one side of the connector 6. A slider 9 is slidably mounted inside the guide rail 8. A ring plate 10 is sleeved on the outside of the lamp tube 7. An air bladder 11 is fixedly mounted on the inner side of the ring plate 10. The ring plate 10 is fixedly connected to the slider 9. An air injection component for injecting air into the air bladder 11 is provided on the outer side of the connecting plate 4. A generating component for generating a flow field in water is provided inside the mounting frame 1. A drive component for controlling the start of the generating component and the rotation of the sprockets 2 is provided on the mounting frame 1.

[0032] In use, the mounting bracket 1 is placed at the fishway inlet and outlet. When fish migrate, the lamp 7 is turned on, and the drive assembly activates the generator, adjusting the flow field at the fishway to create a suitable flow field for migrating fish. This allows the fish to stay in the adjusted flow field area for a longer period, making it easier for them to find the fishway inlet. Simultaneously, the drive assembly drives the sprocket 2 to rotate the chain belt 3, causing the drive plate 4 to move along with the mounting base 5, connector 6, lamp 7, guide rail 8, slider 9, ring plate 10, and airbag 11. When the lamp 7 enters the water from a horizontal position, the air injection assembly inflates the airbag 11, causing it to fit against the lamp 7. When the lamp 7 rotates to a downward angle but has not yet entered the water, the end of the lamp 7 away from the connecting plate 4 is angled downward. At this time, under the action of gravity, the ring plate 10 moves downward with the airbag 11, carrying away impurities from the surface of the lamp 7, thus cleaning the lamp 7. Subsequently, the lamp 7 enters the water, where it accumulates... Impurities at the bottom of the lamp tube 7 are washed away by the water. The light emitted by the lamp tube 7 attracts fish. As the lamp tube 7 moves, it guides the fish towards the fish passage. Then, the lamp tube 7 leaves the water. The fish notice the fish passage moving inward. As the lamp tube 7 leaves the water, the air injection component stops inflating. At this time, the air bag 11 deflates and separates from the surface of the lamp tube 7. When the lamp tube 7 leaves the water, impurities will adhere to its surface. As the lamp tube 7 continues to move, it rotates so that its bottom end is angled upward. At this time, under the action of gravity, the ring plate 10 moves towards the connecting plate 4. During this process, since the air bag 11 does not contact the lamp tube 7, the impurities will not be carried by the air bag 11 to the position near the connecting plate 4. Then, when the lamp tube 7 moves back into the water, the same principle is used to continuously clean the impurities on the surface of the lamp tube 7 before it enters the water, so as to avoid the impurities affecting its light emission effect. The movement of the lamp tube 7 guides the fish towards the fish passage.

[0033] The inner side of the airbag 11 is coated with polyurethane waterproof coating, making its inner side smooth. The weight of the ring plate 10 is sufficient to carry the inflated airbag 11, which is attached to the lamp tube 7, down along the surface of the lamp tube 7, and can move the impurities on the surface of the lamp tube 7. The weight of the ring plate 10 is greater than the frictional force when it carries the inflated airbag 11, which is attached to the lamp tube 7, down along the surface of the lamp tube 7.

[0034] like Figure 2 , Figure 3 and Figure 7 As shown, the air injection assembly includes a cylinder 12 fixedly installed on one side of the connecting plate 4. The side of the cylinder 12 near the airbag 11 is connected to the airbag 11 through a telescopic tube 13. A piston 14 is provided inside the cylinder 12. A spring 16 is fixedly installed on the side of the piston 14 near the connecting plate 4. A push rod 15 is fixedly installed on the side of the piston 14 away from the connecting plate 4. One end of the push rod 15 extends outside the cylinder 12. A compression plate 17 is fixedly installed on the front side of the mounting bracket 1. One end of the compression plate 17 is provided with an inclined surface 18 that cooperates with the push rod 15.

[0035] When the connecting plate 4 moves from a horizontal position into the water along with the cylinder 12, piston 14, and push rod 15, the push rod 15 contacts the inclined surface 18, causing the piston 14 to move along with it. At the same time, the compressed spring 16 deforms and generates force, which forces the air in the cylinder 12 outward. The air enters the airbag 11 through the telescopic tube 13, causing it to expand and making the airbag 11 fit against the surface of the lamp tube 7. Then, the push rod 15 contacts the surface of the extrusion plate 17. The surface of the extrusion plate 17, except for the inclined surface 18, is flat. After the push rod 15 contacts the flat surface, it moves along the flat surface. When the lamp tube 7 rotates to a horizontal position and exits the water, the push rod 15 separates from the extrusion plate 17. The spring 16 releases its force and causes the piston 14 to return to its original position. This allows the telescopic tube 13 to draw the air back from the airbag 11, causing the airbag 11 to deflate and separate from the lamp tube 7.

[0036] like Figure 5 As shown, the connecting plate 4 has a cavity inside. A rotating rod 19 is rotatably installed on the end of the connecting plate 4 away from the lamp tube 7. One end of the rotating rod 19 extends into the cavity. A rotating component for driving the rotation of the rotating rod 19 is provided at one end. The connecting piece 6 is specifically a ball head rod, and the mounting base 5 is a ball head sleeve. The connecting piece 6 is rotatably set inside the mounting base 5. The side of the connecting piece 6 near the rotating rod 19 has a notch surface. The middle part of the mounting base 5 near the cavity has a wire passage hole communicating with the cavity. The end of the rotating rod 19 located in the cavity has a wire take-up groove. A pull rope 20 is fixedly connected in the wire take-up groove. The other end of the pull rope 20 passes through the wire passage hole and is fixedly connected to the middle part of the notch surface of the connecting piece 6.

[0037] After the lamp tube 7 is cleaned, the rotating component drives the rotating rod 19 to rotate, which releases the pull rope 20. At this time, the tension of the pull rope 20 on the connector 6 disappears, and the connector 6 can move. After entering the water, when a fish hits the lamp tube 7, the lamp tube 7 can deflect with the connector 6 to avoid it, so that the lamp tube 7 will not be damaged. When the lamp tube 7 is about to come out of the water, the rotating component drives the rotating rod 19 to rotate and reset, which winds up the pull rope 20 and pulls the connector 6 back to its original position, so that the connector 6 is fixed.

[0038] like Figure 1 and Figure 5 As shown, the rotating assembly includes a gear 22 fixedly installed on the side of the rotating rod 19 away from the connecting piece 6. A torsion spring 21 is sleeved on the outside of the rotating rod 19. The two ends of the torsion spring 21 are fixedly connected to the rotating rod 19 and the connecting plate 4, respectively. A mounting plate 23 is fixedly installed on the front side of the housing 34. The lower front side of the mounting plate 23 is provided with teeth 24 that cooperate with the gear 22 at equal intervals.

[0039] When gear 22 moves to mesh with tooth 24, it causes drive rod 19 to rotate forward. At the same time, torsion spring 21 torsionally deforms and generates force. As rod 19 rotates, pull rope 20 is released, gear 22 separates from tooth 24, torsion spring 21 releases force and causes rod 19 to rotate in reverse, pull rope 20 is wound up, connecting piece 6 is pulled back to its original position and tightened so that it cannot move.

[0040] like Figure 1 and Figure 8 As shown, the generating component includes a sliding frame 27 that is slidably installed in the mounting frame 1. Spray pipes 28 are fixedly installed at equal intervals inside the sliding frame 27. Spray holes are provided at equal intervals on the outer side of the spray pipes 28. Multiple spray pipes 28 are connected to each other through connecting pipes. A water pump 29 is fixedly installed on the outer side of the mounting frame 1. The water delivery end of the water pump 29 is connected to the spray pipes 28 through a hose. A fish detection component 30 is fixedly installed inside the sliding frame 27.

[0041] The fish detection component 30 is a detection component in the prior art that can detect fish school information. Its working principle will not be described in detail here. The drive component drives the sliding frame 27 to move outward of the mounting frame 1, so that the fish detection component 30, along with the nozzle 28, moves accordingly. Then the water pump 29 starts, draws water out and injects it into the nozzle 28 through the hose, and then enters multiple nozzles 28 through the connecting pipe, and finally sprays it out through the nozzle. The fish detection component 30 can detect fish school information, thereby cooperating with the controller 26 to control the water pump 29 to adjust the water spray volume and spray speed, so as to form a regulating flow field suitable for migratory fish at the fish passage.

[0042] like Figure 7As shown, the drive assembly includes a first motor 25 and a second motor 33 fixedly mounted on the top of the mounting frame 1. The output shaft of the first motor 25 extends to the outside of the housing 34 and is fixedly connected to the middle of one of the sprockets 2. The top of the sliding frame 27 is provided with drive teeth 31 at equal intervals. Side plates are symmetrically fixedly mounted on the top of the mounting frame 1. A drive gear 32 that meshes with the drive teeth 31 is rotatably mounted between the two side plates. One end of the output shaft of the second motor 33 is fixedly connected to one end of the drive gear 32. The top of the mounting frame 1 is provided with a controller 26 for controlling the start of the water pump 29, the first motor 25, the lamp tube 7 and the second motor 33. The controller 26 is a PLC controller.

[0043] When fish migrate, the controller 26 controls the first motor 25 and the second motor 33 to start, and controls the lamp 7 to turn on and the water pump 29 to turn on. The output shaft of the first motor 25 drives the sprocket 2 to rotate, thereby driving the chain belt 3 to move. The output shaft of the second motor 33 drives the drive gear 32 to rotate, so that the drive teeth 31 drive the sliding frame 27 to move out of the mounting frame 1.

[0044] like Figure 1 As shown, lamp 7 is a fish-attracting lamp.

[0045] This allows the light tube 7 to enter the water and attract fish to move with it.

[0046] The method of attracting fish using the device described above for enhancing the fish-attracting effect at the fishway inlet and outlet includes the following steps:

[0047] S1. When in use, the mounting bracket 1 is set at the fish passage inlet and outlet. When the fish migrate, the lamp tube 7 is turned on, and the driving component drives the generator to work, adjusting the flow field at the fish passage, thereby forming a suitable flow field for migrating fish, allowing the fish to stay in the flow field area for a long time, thus making it easier for the fish to find the fish passage inlet.

[0048] S2. The drive assembly drives the sprocket 2 to rotate the chain belt 3, causing the drive connecting plate 4 to move along with the mounting base 5, connector 6, lamp tube 7, guide rail 8, slider 9, ring plate 10, and air bag 11. When the lamp tube 7 enters the water from a horizontal position, the air injection assembly injects air into the air bag 11 to make it expand and fit against the lamp tube 7. When the lamp tube 7 rotates to a downward angle but has not yet entered the water, the end of the lamp tube 7 away from the connecting plate 4 is angled downward. At this time, under the action of gravity, the ring plate 10 moves downward with the air bag 11, which carries the impurities on the surface of the lamp tube 7 downward, thus cleaning the lamp tube 7. Then the lamp tube 7 enters the water, and the impurities accumulated at the bottom of the lamp tube 7 are washed away by the water.

[0049] S3. The light emitted by the lamp tube 7 attracts fish. As the lamp tube 7 moves, it guides the fish towards the fish passage. Then, the lamp tube 7 leaves the water. The fish notice the fish passage moving inward. As the lamp tube 7 leaves the water, the air injection component stops inflating. At this time, the air bag 11 deflates and separates from the surface of the lamp tube 7. When the lamp tube 7 leaves the water, impurities will adhere to its surface. As the lamp tube 7 continues to move, it rotates so that its bottom end is angled upward. At this time, under the action of gravity, the ring plate 10 moves towards the connecting plate 4. During this process, since the air bag 11 does not contact the lamp tube 7, the impurities will not be carried by the air bag 11 to the position near the connecting plate 4. Then, when the lamp tube 7 moves back into the water, the same principle is used to continuously clean the impurities on the surface of the lamp tube 7 before it enters the water, so as to avoid the impurities affecting its light emission effect. The movement of the lamp tube 7 guides the flow field, which is then used to better guide the fish towards the fish passage.

[0050] Working principle: In use, the mounting frame 1 is set at the fishway inlet and outlet. When fish migrate, the controller 26 starts the first motor 25 and the second motor 33, turns on the lamp 7, and starts the water pump 29. The output shaft of the first motor 25 drives the sprocket 2 to rotate, thereby driving the chain belt 3 to move. The output shaft of the second motor 33 drives the drive gear 32 to rotate, which in turn drives the sliding frame 27 to move out of the mounting frame 1. This causes the nozzle 28 and the fish detection component 30 to move accordingly. Then, the water pump 29 starts, drawing water out and injecting it into the nozzle 28 through a hose. The water then enters multiple nozzles 28 through connecting pipes and is finally sprayed out through the nozzle holes. The fish detection component 30 can detect information about the fish school. This, in conjunction with the controller 26, controls the water pump 29 to adjust the water spray volume and speed, creating a suitable flow field at the fishway entrance for migrating fish. This allows the fish to linger in the flow field area for an extended period, making it easier for them to find the fishway entrance. The rotation of the chain belt 3 causes the drive plate 4 to move along with the mounting base 5, connector 6, lamp tube 7, guide rail 8, slider 9, ring plate 10, and airbag 11. When the lamp tube 7 enters the water from a horizontal position, the push rod 15 abuts against the inclined plane 18, squeezing the push rod 15 and causing it to move along with the piston 14. At the same time, the compressed spring 16 deforms, generating force that forces the air in the cylinder 12 outward. The air enters the airbag 11 through the telescopic tube 13, causing it to expand. This allows the airbag 11 to contact the lamp tube... 7. Surface fits together, then the push rod 15 contacts the surface of the extrusion plate 17. When the lamp tube 7 rotates to an angled downward position but has not yet entered the water, the end of the lamp tube 7 away from the connecting plate 4 is angled downward. At this time, under the action of gravity, the ring plate 10 moves downward with the airbag 11, causing impurities on the surface of the lamp tube 7 to be carried downward, thus cleaning the lamp tube 7. Then the lamp tube 7 enters the water, and the impurities accumulated at the bottom of the lamp tube 7 are washed away by the water. The light emitted by the lamp tube 7 can attract fish to approach. As the lamp tube 7 moves, it guides the fish towards the fish passage. Then the lamp tube 7 leaves the water, and the fish find the fish passage and move inward. When the lamp tube 7 rotates to a horizontal position and exits the water, the push rod 15 separates from the extrusion plate 17, and the spring 16 releases its force, causing the piston 14 to return to its original position. The position allows the telescopic tube 13 to draw air back from the airbag 11, causing the airbag 11 to deflate and separate from the lamp tube 7. When the lamp tube 7 exits the water, impurities will adhere to its surface. As the lamp tube 7 continues to move, it rotates to a bottom-up angle. At this time, under the action of gravity, the ring plate 10 moves towards the connecting plate 4. During this process, since the airbag 11 and the lamp tube 7 do not contact each other, the impurities will not be carried by the airbag 11 to the position near the connecting plate 4. Subsequently, when the lamp tube 7 moves to enter the water again, the same principle can be used to continuously clean the impurities on the surface of the lamp tube 7 before it enters the water, so as to avoid the impurities affecting its luminous effect. The movement of the lamp tube 7 guides the adjustment of the flow field, which can better guide fish towards the fish passage.After the lamp tube 7 is cleaned, when gear 22 moves to mesh with teeth 24, it causes drive rod 19 to rotate clockwise. Simultaneously, torsion spring 21 is torsionally deformed, generating force. As rod 19 rotates, pull rope 20 is released. At this point, the tension of pull rope 20 on connector 6 disappears, allowing connector 6 to move freely. Once in the water, when a fish bumps into lamp tube 7, it can deflect with connector 6 to avoid damage. As lamp tube 7 is about to exit the water, gear 22 disengages from teeth 24, torsion spring 21 releases its force, causing rod 19 to rotate counterclockwise, winding pull rope 20 back to its original position and tightening it to prevent movement. When not in use, the output shaft of second motor 33 drives drive gear 32 to rotate, causing drive teeth 31 to reset sliding frame 27.

[0051] Obviously, the above description is only a part of the embodiments of the present invention, and not all of the embodiments. The above embodiments are not intended to limit the present invention, and various modifications and variations can be made to the present invention by those skilled in the art. Any combination, modification, equivalent substitution, improvement, and all other embodiments that can be made by those skilled in the art within the spirit and principles of the present invention should be within the protection scope of the present invention.

Claims

1. A device for enhancing the fish-attracting effect at the inlet and outlet of a fishway, comprising a mounting frame (1) and a housing (34) fixed to the top of the mounting frame (1), characterized in that: The front side of the housing (34) is symmetrically and rotatably equipped with sprockets (2). The two sprockets (2) are connected by a chain belt (3). A connecting plate (4) is fixedly installed on the front side of the chain belt (3). A mounting base (5) is fixedly installed at one end of the connecting plate (4). A lamp tube (7) is connected to the mounting base (5) by a connector (6). A ring plate (10) is sleeved on the outside of the lamp tube (7). An air bladder (11) is fixedly installed on the inner side of the ring plate (10). An air injection component for injecting air into the air bladder (11) is provided on the outer side of the connecting plate (4). A generating component for generating a flow field in water is provided inside the mounting frame (1). A driving component for controlling the start of the generating component and the rotation of the sprockets (2) is provided on the mounting frame (1). The air injection assembly includes a cylinder (12) fixedly installed on one side of the connecting plate (4). The side of the cylinder (12) near the airbag (11) is connected to the airbag (11) through a telescopic tube (13). A piston (14) is provided inside the cylinder (12). A spring (16) is fixedly installed on the side of the piston (14) near the connecting plate (4). A push rod (15) is fixedly installed on the side of the piston (14) away from the connecting plate (4). One end of the push rod (15) extends to the outside of the cylinder (12). A compression plate (17) is fixedly installed on the front side of the mounting bracket (1). One end of the compression plate (17) is provided with an inclined surface (18) that cooperates with the push rod (15). The lamp tube (7) is a fish-attracting lamp tube. A guide rail (8) is fixedly installed on one side of the connector (6). A slider (9) is slidably installed inside the guide rail (8). The ring plate (10) is fixedly connected to the slider (9). The drive assembly drives the sprocket (2) to rotate with the chain belt (3), causing the connecting plate (4) to move along with the mounting base (5), connector (6), lamp tube (7), guide rail (8), slider (9), ring plate (10), and airbag (11). When the lamp tube (7) enters the water from a horizontal position, the push rod (15) abuts against the inclined plane (18), causing the inclined plane (18) to squeeze the push rod (15), causing it to move along with the piston (14). At the same time, the compressed spring (16) deforms and generates force, causing the air in the cylinder (12) to be pushed outward. Air is squeezed and enters the airbag (11) through the telescopic tube (13), causing it to expand and making the airbag (11) fit against the surface of the lamp tube (7). Then, the push rod (15) contacts the surface of the extrusion plate (17). When the lamp tube (7) rotates to an angled downward position but has not yet entered the water, the end of the lamp tube (7) away from the connecting plate (4) is angled downward. At this time, under the action of gravity, the ring plate (10) moves downward with the airbag (11), causing the impurities on the surface of the lamp tube (7) to be carried downward, thus cleaning the lamp tube (7). Then, the lamp tube (7) enters the water. Impurities accumulated at the bottom of the lamp tube (7) are washed away by water. The light emitted by the lamp tube (7) attracts fish to approach. As the lamp tube (7) moves, it guides the fish towards the fish passage. Then the lamp tube (7) leaves the water. The fish find the fish passage and move inward. When the lamp tube (7) rotates to a horizontal position and leaves the water, the top rod (15) separates from the squeezing plate (17). The spring (16) releases its force and drives the piston (14) to reset. This causes the telescopic tube (13) to draw air back from the air bladder (11), causing the air bladder (11) to deflate and separate from the lamp tube (7). When the lamp tube (7) is separated and exits the water, impurities will adhere to the surface of the lamp tube (7). As the lamp tube (7) continues to rotate, the lamp tube (7) rotates with the bottom end tilted upward. At this time, under the action of gravity, the ring plate (10) moves towards the connecting plate (4). During this process, since the air bag (11) does not contact the lamp tube (7), the impurities will not be carried by the air bag (11) to the position close to the connecting plate (4). Then, when the lamp tube (7) rotates again to enter the water, the same principle can be used to continuously clean the impurities on the surface of the lamp tube (7) before it enters the water.

2. The device for enhancing the fish-attracting effect at the fishway inlet and outlet according to claim 1, characterized in that: The connecting plate (4) has a cavity inside. A rotating rod (19) is rotatably installed on the end of the connecting plate (4) away from the lamp tube (7). One end of the rotating rod (19) extends into the cavity. A rotating component for driving the rotating rod (19) is provided at one end. The connecting piece (6) is specifically a ball head rod. The mounting base (5) is a ball head sleeve. The connecting piece (6) is rotatably set inside the mounting base (5). The connecting piece (6) has a notch on the side near the rotating rod (19). The mounting base (5) has a wire hole communicating with the cavity in the middle on the side near the cavity. The rotating rod (19) has a wire take-up groove at one end inside the cavity. A pull rope (20) is fixedly connected in the wire take-up groove. The other end of the pull rope (20) passes through the wire hole and is fixedly connected to the middle of the notch on the connecting piece (6).

3. The device for enhancing the fish-attracting effect at the fishway inlet and outlet according to claim 2, characterized in that: The rotating assembly includes a gear (22) fixedly installed on the side of the rotating rod (19) away from the connector (6). A torsion spring (21) is sleeved on the outside of the rotating rod (19). The two ends of the torsion spring (21) are fixedly connected to the rotating rod (19) and the connecting plate (4) respectively. A mounting plate (23) is fixedly installed on the front side of the housing (34). The lower front side of the mounting plate (23) is provided with teeth (24) that cooperate with the gear (22) at equal intervals.

4. The device for enhancing the fish-attracting effect at the fishway inlet and outlet according to claim 3, characterized in that: The generating component includes a sliding frame (27) that is slidably installed in the mounting frame (1). The sliding frame (27) has nozzles (28) fixedly installed at equal intervals inside. The nozzles (28) have nozzle holes at equal intervals on their outer sides. The multiple nozzles (28) are connected by connecting pipes. A water pump (29) is fixedly installed on the outer side of the mounting frame (1). The water delivery end of the water pump (29) is connected to the nozzles (28) through a hose. A fish detection component (30) is fixedly installed inside the sliding frame (27).

5. The device for enhancing the fish-attracting effect at the fishway inlet and outlet according to claim 4, characterized in that: The drive assembly includes a first motor (25) and a second motor (33) fixedly mounted on the top of the mounting frame (1). The output shaft of the first motor (25) extends to the outside of the housing (34) and is fixedly connected to the middle of one of the sprockets (2). The top of the sliding frame (27) is provided with drive teeth (31) at equal intervals. The top of the mounting frame (1) is symmetrically fixedly mounted with side plates. A drive gear (32) that cooperates with the drive teeth (31) is rotatably mounted between the two side plates. One end of the output shaft of the second motor (33) is fixedly connected to one end of the drive gear (32). The top of the mounting frame (1) is provided with a controller (26) for controlling the start of the water pump (29), the first motor (25), the lamp tube (7) and the second motor (33).

6. A method for attracting fish using the device for enhancing the fish-attracting effect at the fishway inlet and outlet as described in claim 5, characterized in that: Including steps such as: S1. When in use, the mounting bracket (1) is set at the fish passage inlet and outlet. When the fish migrate, the lamp tube (7) is turned on and the driving component is driven to work. The flow field is adjusted at the fish passage, thereby forming a suitable flow field for migrating fish, allowing the fish to stay in the flow field area for a long time, thus making it easier for the fish to find the fish passage inlet. S2. The drive assembly drives the sprocket (2) to rotate with the chain belt (3), causing the drive connecting plate (4) to move with the mounting base (5), connector (6), lamp tube (7), guide rail (8), slider (9), ring plate (10), and air bag (11). When the lamp tube (7) enters the water from a horizontal state, the air injection assembly injects air into the air bag (11) to make it expand, thus fitting with the lamp tube (7). When the lamp tube (7) rotates to a downward angle but has not yet entered the water, the end of the lamp tube (7) away from the connecting plate (4) is downward angled. At this time, under the action of gravity, the ring plate (10) moves downward with the air bag (11), causing the impurities on the surface of the lamp tube (7) to be carried downward, thus cleaning the lamp tube (7). Then the lamp tube (7) enters the water, and the impurities accumulated at the bottom of the lamp tube (7) are washed away by the water. S3. The light emitted by the lamp tube (7) can attract fish to approach. As the lamp tube (7) moves, it guides the fish towards the fish passage. Then, the lamp tube (7) leaves the water. The fish notice the fish passage moving inward. The lamp tube (7) leaves the water. At this time, the air injection component cancels the air injection. At this time, the air bladder (11) deflates and separates from the surface of the lamp tube (7). When the lamp tube (7) leaves the water, impurities will adhere to its surface. As the lamp tube (7) continues to move, it rotates so that the bottom end is angled upward. At this time, under the action of gravity, the ring... The plate (10) moves toward the connecting plate (4). During this process, since the air bag (11) does not contact the lamp tube (7), impurities will not be carried by the air bag (11) to the position near the connecting plate (4). Then, when the lamp tube (7) moves again to enter the water, the same principle can be used to continuously clean the impurities on the surface of the lamp tube (7) before it enters the water, so as to avoid impurities affecting its luminous effect. The movement of the lamp tube (7) guides the adjustment flow field generated, which can better guide the fish to the fish passage.

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