An auxiliary migration device for large migratory fish

Abstract

The application belongs to the technical field of auxiliary migration device, and discloses an auxiliary migration device suitable for large-scale migratory fish, which comprises a main body bottom plate, a swing assembly is arranged at the bottom of the main body bottom plate, the swing assembly comprises a limiting frame, a main shaft is rotationally arranged at the middle portion of the limiting frame, and movable paddles are fixedly installed at the outer side of the main shaft, the swing assembly and the stagnation arc area are cooperated, the swing is driven by the water flow, the direction of fish swimming is adjusted by the swing, the water flow impact is reduced by the swing control of the water flow size, the difficulty of fish migration is reduced, the rest area is arranged to facilitate fish to take a short rest, the success rate of fish migration is increased, the channel of fish swimming is switched by the swing, the rest area is provided for the fish by the arc area of the stagnation area, the fish can recover the strength, the migration probability is effectively improved, and the migration difficulty is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary migration devices, specifically an auxiliary migration device suitable for large migratory fish. Background Technology

[0002] River weirs are important water conservancy projects that control the water volume downstream. Large fish need to migrate upstream to spawn when they enter their spawning season. However, the construction of river dams by humans has greatly increased the difficulty of fish migration. In order to ensure that large migratory fish can migrate normally, auxiliary migration devices are usually needed to guide the migratory fish and effectively improve the success rate of migratory fish spawning.

[0003] For example, the invention with publication number CN119824861A discloses a safe and efficient fish downstream device and downstream operation method, including a downstream tower with a downstream fishway connected to the upstream and downstream river channels via a fish-attracting pond and a buffer fishway; an upstream control zone with gates is set up to attract juvenile fish and send them into the downstream fishway; a spiral-shaped downstream fishway is set up, which greatly reduces the land area required for the fish downstream channel, and is suitable for various mountain high dam environments where it is difficult to build a downstream channel; at the same time, by setting up a buffer pond and a buffer fishway, the impact on the fish during the downstream movement can be greatly reduced, increasing the survival rate of the fish; after the juvenile fish are attracted into the fish-attracting pond by the fish-attracting mechanism, the juvenile fish can be quickly sent to the downstream river channel through the downstream fishway using the water head difference between the upstream and downstream as a driving force, which maintains low maintenance costs and high downstream efficiency, and is suitable for widespread use.

[0004] Existing technologies can provide a buffer for downstream fish by setting up spiral-shaped downstream fishways, but the structure is complex and cannot help fish that migrate upstream. Long spiral fishways do not have resting areas and require fish to swim continuously, which greatly increases the difficulty of fish migrating upstream.

[0005] Therefore, an auxiliary migration device suitable for large migratory fish is proposed to solve the problems mentioned in the background art. Summary of the Invention

[0006] To address the problems mentioned in the background art, the present invention provides an auxiliary migration device suitable for large migratory fish.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary migration device suitable for large migratory fish, comprising a main body base plate, wherein a swinging component is provided at the bottom of the main body base plate;

[0008] The swing assembly includes a limiting frame, a main shaft rotatably mounted in the middle of the limiting frame, and a movable blade fixedly mounted on the outer side of the main shaft. A reducer is assembled and mounted on the top of the main shaft, and a drive shaft is fixedly mounted on the output end of the reducer. A turntable is spliced ​​and mounted on the outer side of the upper end of the drive shaft, and a drive rod is fixedly mounted on the top edge of the turntable. A movable frame is slidably mounted on the outer side of the drive rod, and a sliding bracket is slidably mounted on the outer side of the middle of the movable frame. A connecting column is mounted on the top of the sliding bracket, and a swing frame is assembled and mounted on the outer side of the connecting column. A limiting shaft is mounted on the inner side of the back of the swing frame, and the limiting shaft is rotatably mounted on the top of the back of the main body base plate.

[0009] Preferably, a central frame is installed on the back of the limiting frame, and a closed cover plate is installed on the top of the limiting frame. Four sets of connecting rods are welded to the top edge of the closed cover plate, and the connecting rods are welded to the bottom of the main body base plate.

[0010] Preferably, an adjustment frame is movably provided on the outer side of the turntable, and the upper end of the adjustment frame is embedded and fixed on the inner side of the main body base plate. Two sets of limiting guide rods are fixedly installed on the inner side of the adjustment frame. The movable frame is slidably disposed on the outer side of the limiting guide rods. Three sets of limiting strips are respectively installed on both sides of the movable frame. The sliding bracket is slidably disposed on the outer side of the limiting strips.

[0011] Preferably, a triangular frame is installed on one side of the front of the swing frame, and several sets of flow grooves are opened through the inner side of the lower end of the triangular frame. Several sets of arc-shaped grooves are opened on the back of the swing frame away from the triangular frame, and a grid groove is opened on the back of the swing frame near the triangular frame.

[0012] Preferably, a flow regulating component is slidably disposed on the inner side of the grille groove, and an auxiliary flow guiding component is installed in the middle of the back of the main body base plate.

[0013] Preferably, the flow regulating component includes an regulating grille, and two sets of connecting brackets are fixedly installed on the side of the regulating grille away from the triangular frame. A lead screw slider is installed in the middle of the two sets of connecting brackets. A reciprocating lead screw is rotatably arranged in the middle of the lead screw slider, and a positioning plate is rotatably installed at one end of the reciprocating lead screw. The positioning plate is fixedly connected to the swing frame.

[0014] Preferably, a worm gear module is movably mounted at the end of the reciprocating lead screw away from the positioning plate, and a rotating blade is rotatably mounted at the end of the worm gear module away from the auxiliary flow guide assembly. A speed sensor is installed at the upper end of the worm gear module near the auxiliary flow guide assembly, and a locking electric push rod is fixedly mounted on one side of the worm gear module away from the reciprocating lead screw. A flow guide is fixedly mounted on the outer side of the worm gear module, and the flow guide is fixedly mounted on the inner side of the swing frame.

[0015] Preferably, the auxiliary flow guiding component includes a limiting plate, a through groove is provided through the inner side of the limiting plate, a lifting grille is slidably provided on the inner side of the through groove, and the top of the lifting grille and the top of the inner side of the through groove are elastically connected by several sets of support springs. Several sets of tilting blocks are installed on the side of the upper end of the lifting grille near the swing frame.

[0016] The auxiliary flow guiding component includes several sets of flip plates, and the flip plates are flipped and disposed inside the swing frame on the side away from the flow regulating component. A flip sleeve is fixedly installed at the upper end of the flip plate, and a torsion spring shaft is installed in the middle of the flip sleeve. The torsion spring shaft is rotatably disposed inside the swing frame.

[0017] Preferably, an inlet channel is installed on the top of the front side of the main body base plate, and a return channel is installed on the top of the back side of the main body base plate. The return channel is fixedly installed on the side of the limiting plate away from the flow regulating component. A stagnation arc area is installed on the front side of the return channel, and the stagnation arc area is fixedly installed on one side of the inlet channel. An overflow pipe is connected between the upper end of the stagnation arc area and the inlet channel.

[0018] A circular-rimmed wide-top weir is provided on the outer side of the main body base plate, and a reserved groove is provided on the top of the circular-rimmed wide-top weir. The main body base plate is fixedly installed on the top of the reserved groove. An impact groove is provided in the middle of the reserved groove. The limiting frame is fixedly installed on the inner side of the impact groove. A support seat is installed on the front of the circular-rimmed wide-top weir, and the support seat is located at the bottom of the main body base plate.

[0019] A method for using an auxiliary migration device suitable for large migratory fish:

[0020] S1. Fix the main base plate inside the reserved groove of the circular-edge wide-crested weir, keeping the main base plate close to the support seat. The water flow will enter the interior through the guide shroud and unlock and lock the electric push rod. During the entry process, the water flow will drive the rotating blade to rotate. During the rotation, the speed sensor at the end will monitor the speed and calculate the number of rotations. During the rotation of the rotating blade, it will drive the reciprocating screw through the worm gear module. By rotating in one direction, it can drive the screw slider sleeved on the outside of the reciprocating screw. During the sliding process, it will push the connecting bracket and the adjusting grid to slide laterally. During the sliding process, the flow space of the grid groove will be opened, thereby controlling the flow rate and setting the adjustment position according to the number of rotations.

[0021] S2. After the water flows through the grid channel into the interior, it will flow to the inside of the channel. Fish will enter the channel and swim by sensing the direction of the water flow. During the swimming process, they will enter the inside of the swing frame and pause briefly.

[0022] S3. The water flow at the bottom of the main body plate will enter the interior of the limiting frame through the central frame. After the water flow enters, it will impact the rotating paddle. During the rotation, it will drive the main shaft in the middle to rotate. During the rotation, the transmission shaft will be controlled by the reducer to rotate at different speeds. During the rotation, the turntable will be rotated. During the rotation, the drive rod will drive the movable frame to slide laterally along the limiting guide rod. At the same time, the sliding bracket and connecting column at the top will drive the swing frame to swing along the limiting axis. After swinging, the opening area of ​​the swing frame will be controlled to approach the limiting plate.

[0023] S4. During the swinging process, the arc groove of the swing frame will contact the inclined block and lift the inclined block and the lifting grid along the inclined surface. During the lifting process, the water flow will be discharged through the through groove and push the fish located inside the swing frame into the stagnant arc area. After being pushed in, the fish will migrate along the water flow of the migration channel.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention utilizes a combination of oscillating components and stagnant arc zones to facilitate oscillation driven by water flow. This oscillation helps regulate the direction of fish movement and reduces water flow impact by controlling the oscillation, thus lowering the difficulty of fish migration. Resting areas are provided to allow fish to rest briefly, increasing the success rate of migration. Water flowing into the limiting frame drives the movable blades to rotate, controlling the rotation of the main shaft. The main shaft and reducer work together to stably control the turntable's rotation inside the adjusting frame. A drive rod on the adjusting frame controls the lateral sliding of the movable frame along the limiting guide rod. The limiting strip and sliding bracket control the oscillating frame to oscillate stably along the limiting axis. Oscillation switches the fish's flow path and guides them to the next area. The arc-shaped stagnant area provides a resting place for the fish, allowing them to recover their energy, effectively increasing the probability of migration while reducing its difficulty.

[0026] This invention, through the combination of flow regulation components and regulating grilles, allows for the control of the water flow entering the swing frame by adjusting the position of the regulating grilles according to the water flow velocity. This prevents the problem of insufficient water flow to offset the impact force on fish, thus avoiding migration failure. The water flow controls the rotation of the paddle wheel, which drives the worm gear module for adjustment. Monitoring by a rotation sensor allows for locking via an electric actuator, preventing the worm gear module from continuing to rotate and thus ensuring the adjustment continues. When the worm gear module drives the reciprocating screw, the screw slider can be controlled for lateral sliding adjustment. Simultaneously, the regulating grille slides along the inner side of the grille groove using a connecting bracket. This adjustment effectively changes the water flow entering the swing frame to adapt to different needs, and by changing the water flow velocity, the problem of excessive water flow obstructing fish migration is avoided.

[0027] This invention, through the coordinated use of auxiliary flow guiding components and swing components, facilitates the opening of the lifting grille by compression. The opening allows water to flow in, propelling fish within the swing frame into the stagnant arc zone, thus achieving a guiding effect. This effectively improves efficiency and reduces the failure rate. The arc-shaped groove of the swing frame, through its curved surface structure, pushes the tilting block and lifting grille upwards. This upward movement opens the through-slot, allowing water to enter and impact the fish, guiding them into the stagnant arc zone. This rapid guidance helps fish quickly find a channel to continue their migration. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the cross-sectional structure of the entry channel of the present invention;

[0030] Figure 3 This is a schematic cross-sectional view of the swing assembly of the present invention;

[0031] Figure 4 This is a schematic diagram of the limiting frame structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the movable blade structure of the present invention;

[0033] Figure 6 This is an exploded view of the movable frame structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the flow regulation component structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the auxiliary flow guiding component structure of the present invention;

[0036] Figure 9 For the present invention Figure 8 Enlarged cross-sectional structural diagram at point B;

[0037] Figure 10 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0038] Figure 11 This is a schematic diagram of the circular-rimmed broad-crested weir structure of the present invention;

[0039] Figure 12 For the present invention Figure 1 Enlarged structural diagram at point C;

[0040] In the diagram: 100, Main body base plate; 101, Entry channel; 102, Stagnation arc area; 103, Flow channel; 104, Overflow pipe;

[0041] 001. Swing assembly; 200. Movable blade; 201. Limiting frame; 202. Concentrating frame; 203. Enclosed cover plate; 204. Connecting rod; 205. Main shaft; 206. Reducer; 207. Drive shaft;

[0042] 300. Connecting column; 301. Adjusting frame; 302. Turntable; 303. Drive rod; 304. Limiting guide rod; 305. Movable frame; 306. Limiting strip; 307. Sliding bracket;

[0043] 002. Flow regulating component; 400. Swing frame; 401. Limiting shaft; 402. Triangular frame; 403. Flow channel; 404. Arc-shaped channel; 405. Grille channel;

[0044] 500. Adjustable grille; 501. Radiator fairing; 502. Worm gear module; 503. Rotary blade; 504. Speed ​​sensor; 505. Locking electric push rod; 506. Reciprocating lead screw; 507. Lead screw slider; 508. Connecting bracket; 509. Positioning plate;

[0045] 003, Auxiliary flow guide assembly; 600, Lifting grille; 601, Limiting plate; 602, Support spring; 603, Inclined block; 604, Through slot; 605, Torsion spring shaft; 606, Flip sleeve; 607, Flip plate;

[0046] 700, Circular-edged wide-crowned weir; 701, Reserved groove; 702, Impact groove; 703, Support seat. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] like Figures 1 to 11 As shown, the present invention provides an auxiliary migration device suitable for large migratory fish, including a main body base plate 100, and a swing component 001 is provided at the bottom of the main body base plate 100;

[0049] The swing assembly 001 includes a limiting frame 201. A main shaft 205 is rotatably mounted in the middle of the limiting frame 201, and a movable blade 200 is fixedly mounted on the outer side of the main shaft 205. A reducer 206 is assembled and mounted on the top of the main shaft 205, and a transmission shaft 207 is fixedly mounted on the output end of the reducer 206. A turntable 302 is spliced ​​and mounted on the outer side of the upper end of the transmission shaft 207, and a drive rod 303 is fixedly mounted on the top edge of the turntable 302. A movable frame 305 is slidably mounted on the outer side of the drive rod 303, and a sliding bracket 307 is slidably mounted on the outer side of the middle of the movable frame 305. A connecting column 300 is mounted on the top of the sliding bracket 307, and a swing frame 400 is assembled and mounted on the outer side of the connecting column 300. A limiting shaft 401 is mounted on the inner side of the back of the swing frame 400, and the limiting shaft 401 is rotatably mounted on the top of the back of the main body base plate 100.

[0050] The above scheme is adopted as follows: the main base plate 100 can provide support for the overall structure of the top, the limiting frame 201 can provide the installation position for the internal structure, the water flow can drive the movable paddle 200 to rotate, the rotation can control the main shaft 205 to drive, the reducer 206 at the top can drive the transmission shaft 207 and the structure at the top to drive and adjust, the turntable 302 can control the drive rod 303 to adjust under the drive of the transmission shaft 207, the drive rod 303 can control the movable frame 305 to slide laterally along the limiting guide rod 304 during rotation, the limiting guide rod 304 can increase the stability of the lateral adjustment of the movable frame 305, the sliding bracket 307 can be used to assist the swing frame 400 for fine adjustment, the connecting column 300 can connect the sliding bracket 307 and the swing frame 400 to ensure the stability of the structure, the limiting shaft 401 can limit the swing frame 400 and assist the swing frame 400 to swing and adjust.

[0051] like Figure 3 and Figure 5As shown, a central frame 202 is installed on the back of the limiting frame 201, and a closed cover plate 203 is assembled and installed on the top of the limiting frame 201. Four sets of connecting rods 204 are welded and installed on the top edge of the closed cover plate 203, and the connecting rods 204 are welded and installed on the bottom of the main body base plate 100.

[0052] An adjustment frame 301 is movably provided on the outer side of the turntable 302, and the upper end of the adjustment frame 301 is embedded and fixed on the inner side of the main body base plate 100. Two sets of limiting guide rods 304 are fixedly installed on the inner side of the adjustment frame 301. The movable frame 305 is slidably disposed on the outer side of the limiting guide rods 304. Three sets of limiting strips 306 are respectively installed on both sides of the movable frame 305. The sliding bracket 307 is slidably disposed on the outer side of the limiting strips 306.

[0053] A triangular frame 402 is installed on one side of the front of the swing frame 400, and several sets of flow grooves 403 are opened through the inner side of the lower end of the triangular frame 402. Several sets of arc grooves 404 are opened on the back of the swing frame 400 away from the triangular frame 402, and a grid groove 405 is opened on the back of the swing frame 400 near the triangular frame 402.

[0054] The above scheme is adopted: the central frame 202 is used to concentrate the water flow into the interior of the limiting frame 201, and a grid structure is set in the area where the water flows in to isolate debris. The connecting rod 204 can connect the closed cover plate 203 to the main body base plate 100, thereby ensuring the stability of the bottom limiting frame 201 structure. The adjusting frame 301 can be connected to the main body base plate 100 to maintain the stability of the structure. The limiting strip 306 can restrict the sliding bracket 307 and assist in the lateral sliding fine adjustment.

[0055] like Figure 2 and Figure 6 As shown, a flow regulating component 002 is slidably disposed on the inner side of the grille 405, and an auxiliary flow guiding component 003 is installed in the middle of the back of the main body base plate 100.

[0056] The flow regulating component 002 includes an regulating grille 500, and two sets of connecting brackets 508 are fixedly installed on the side of the regulating grille 500 away from the triangular frame 402. A lead screw slider 507 is installed in the middle of the two sets of connecting brackets 508. A reciprocating lead screw 506 is rotatably arranged in the middle of the lead screw slider 507, and a positioning plate 509 is rotatably installed at one end of the reciprocating lead screw 506. The positioning plate 509 is fixedly connected to the swing frame 400.

[0057] A worm gear module 502 is movably mounted at the end of the reciprocating lead screw 506 away from the positioning plate 509, and a rotating blade 503 is rotatably mounted at the end of the worm gear module 502 away from the auxiliary flow guide component 003. A speed sensor 504 is installed at the upper end of the worm gear module 502 near the auxiliary flow guide component 003, and a locking electric push rod 505 is fixedly mounted on one side of the worm gear module 502 away from the reciprocating lead screw 506. A flow guide shroud 501 is fixedly mounted on the outer side of the worm gear module 502, and the flow guide shroud 501 is fixedly mounted on the inner side of the swing frame 400.

[0058] Using the above scheme: the size of the flow area of ​​the grid channel 405 can be changed by adjusting the grid 500 through lateral sliding. The connecting bracket 508 can connect the lead screw slider 507 and the adjusting grid 500, which ensures the stability of the structure. The rotation of the reciprocating lead screw 506 can drive the lead screw slider 507 to slide laterally. The worm gear module 502 can provide driving force through the control of the rotating blade 503. The flow guide 501 can guide the water flow. The speed sensor 504 can monitor the speed and number of rotations of the rotating blade 503. The locking electric push rod 505 can control and limit the rotation of the worm gear module 502. The flow guide 501 can guide the water flow.

[0059] like Figure 7 , Figure 9 and Figure 11 As shown, the auxiliary flow guiding component 003 includes a limiting plate 601. A through groove 604 is provided through the inner side of the limiting plate 601. A lifting grille 600 is slidably arranged on the inner side of the through groove 604. The top of the lifting grille 600 and the top of the inner side of the through groove 604 are elastically connected by several sets of support springs 602. Several sets of tilting blocks 603 are installed on the side of the upper end of the lifting grille 600 near the swing frame 400.

[0060] The auxiliary flow guiding component 003 includes several sets of flip plates 607, and the flip plates 607 are flipped and disposed inside the swing frame 400 on the side away from the flow regulating component 002. A flip sleeve 606 is fixedly installed on the upper end of the flip plate 607, and a torsion spring shaft 605 is installed in the middle of the flip sleeve 606. The torsion spring shaft 605 is rotatably disposed inside the swing frame 400.

[0061] An inlet channel 101 is installed on the top of the front side of the main body base plate 100, and a return channel 103 is installed on the top of the back side of the main body base plate 100. The return channel 103 is fixedly installed on the side of the limiting plate 601 away from the flow regulating component 002. A stagnation arc area 102 is installed on the front side of the return channel 103, and the stagnation arc area 102 is fixedly installed on the side of the inlet channel 101. An overflow pipe 104 is connected between the upper end of the stagnation arc area 102 and the inlet channel 101.

[0062] A circular-edged wide-top weir 700 is provided on the outer side of the main body base plate 100, and a reserved groove 701 is provided on the top of the circular-edged wide-top weir 700. The main body base plate 100 is fixedly installed on the top of the reserved groove 701. An impact groove 702 is provided in the middle of the reserved groove 701. A limiting frame 201 is fixedly installed on the inner side of the impact groove 702. A support seat 703 is installed on the front of the circular-edged wide-top weir 700, and the support seat 703 is located at the bottom of the main body base plate 100.

[0063] Using the above scheme: the limiting plate 601 provides an installation position and restriction for the inner structure; the through groove 604 ensures normal water flow; the lifting grille 600 can adjust the opening size of the through groove 604 by vertical adjustment, thus ensuring that water can enter the swing frame 400 normally, thereby pushing the fish into the inner side of the stagnant arc zone 102; the overflow pipe 104 guides the overflowing water to be discharged through the inlet channel 101; the tilting block 603 assists in the adjustment in conjunction with the arc groove 404; the support spring 602 pushes the lifting grille 600 to reset; and the flip plate 607... The water flow impact can be used to open and change the water flow by flipping the sleeve 606 and the torsion spring shaft 605, thus pushing the flip plate 607 to flip and reset. The entry channel 101 can guide the fish into the interior, and the migration channel 103 can assist the fish in migrating. The circular-rimmed wide-top weir 700 is the main structure of the weir. The reserved groove 701 can provide the installation position for the main device. The reserved groove 701 and the impact groove 702 can guide the water in the upstream area of ​​the weir. The support seat 703 can provide support for the main structure and increase the stability of the structure.

[0064] The working principle and usage process of this invention are as follows: The main body base plate 100 is fixedly installed inside the reserved groove 701 of the circular edge wide top weir 700, keeping the main body base plate 100 close to the support seat 703. The water flow will enter the interior through the guide cover 501 and unlock and lock the electric push rod 505. During the entry process, the water flow will drive the rotating blade 503 to rotate. During the rotation, the speed sensor 504 at the end will monitor the speed and calculate the number of rotations. During the rotation of the rotating blade 503, it will drive the reciprocating screw 506 through the worm gear module 502. By rotating in one direction, the screw slider 507 sleeved on the outside of the reciprocating screw 506 can be driven. During the sliding process, the connecting bracket 508 and the adjusting grid 500 will be pushed to slide laterally. During the sliding process, the flow space of the grid groove 405 will be opened, thereby controlling the flow rate and setting the adjustment position according to the number of rotations.

[0065] After the water flows through the grid groove 405 into the interior, it will flow to the inside of the inlet channel 101. Fish enter the inside of the channel 101 by sensing the direction of the water flow and swim. During the swimming process, they will enter the inside of the swing frame 400 and pause briefly.

[0066] The water flow at the bottom of the main body base plate 100 will enter the interior of the limiting frame 201 through the central frame 202. After the water flow enters, it will impact the rotating paddle 200. During the rotation, it will drive the central main shaft 205 to rotate. During the rotation, the transmission shaft 207 will be controlled to rotate at different speeds through the reducer 206. During the rotation, the turntable 302 will be driven to rotate. During the rotation, the drive rod 303 will drive the moving frame 305 to slide laterally along the limiting guide rod 304. At the same time, the top sliding bracket 307 and connecting column 300 will drive the swing frame 400 to swing along the limiting shaft 401. After swinging, the opening area of ​​the swing frame 400 will be controlled to approach the limiting plate 601.

[0067] During the swinging process, the arc groove 404 of the swing frame 400 will contact the inclined block 603 and lift the inclined block 603 and the lifting grid 600 along the inclined surface. During the lifting process, the water flow will be discharged through the through groove 604, which will push the fish located inside the swing frame 400 into the stagnant arc area 102. After being pushed in, the fish will migrate along the water flow of the migration channel 103.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assisted migration device suitable for use with large migratory fish, comprising a main body base plate (100), characterised in that: The bottom of the main bottom plate (100) is provided with a swing assembly (001); the swing assembly (001) comprises a limiting frame (201), the middle part of the limiting frame (201) is rotationally provided with a main shaft (205), the outer side of the main shaft (205) is fixedly installed with a movable paddle (200), the top of the main shaft (205) is combinedly installed with a speed reducer (206), the output end of the speed reducer (206) is fixedly installed with a transmission shaft (207), the outer side of the upper end of the transmission shaft (207) is splicedly installed with a rotating disc (302), the top of the edge of the rotating disc (302) is fixedly installed with a driving rod (303), the outer side of the driving rod (303) is slidably provided with a movable frame (305), the outer side of the middle part of the movable frame (305) is slidably provided with a sliding support (307), the top of the sliding support (307) is installed with a connecting column (300), the outer side of the connecting column (300) is combinedly installed with a swing frame (400), the inner side of the back of the swing frame (400) is installed with a limiting shaft (401), and the limiting shaft (401) is rotationally arranged at the top of the back of the main bottom plate (100); the back of the limiting frame (201) is installed with a concentrating frame (202), and the top of the limiting frame (201) is combinedly installed with a closing cover plate (203), the top of the edge of the closing cover plate (203) is weldedly installed with four connecting rods (204), and the connecting rods (204) are weldedly installed at the bottom of the main bottom plate (100); the outer side of the rotating disc (302) is movably provided with an adjusting frame (301), and the upper end of the adjusting frame (301) is embeddedly fixed to the inner side of the main bottom plate (100), the inner side of the adjusting frame (301) is fixedly installed with two limiting guide rods (304), the movable frame (305) is slidably arranged on the outer side of the limiting guide rods (304), three limiting strips (306) are respectively arranged on the two sides of the movable frame (305), and the sliding support (307) is slidably arranged on the outer side of the limiting strips (306); one side of the front of the swing frame (400) is installed with a triangular frame (402), a plurality of flow grooves (403) are formed in the inner side of the lower end of the triangular frame (402), a plurality of arc-shaped grooves (404) are formed on the side of the back of the swing frame (400) away from the triangular frame (402), and a grating groove (405) is formed on the side of the back of the swing frame (400) close to the triangular frame (402); the inner side of the grating groove (405) is slidably provided with a flow adjusting assembly (002), and the middle part of the back of the main bottom plate (100) is installed with an auxiliary flow guiding assembly (003).The flow regulating assembly (002) comprises an adjusting grid (500), two groups of connecting supports (508) are fixedly installed on the side away from the triangular frame (402) at one end of the adjusting grid (500), a screw rod sliding block (507) is installed at the middle part of the two groups of connecting supports (508), a reciprocating screw rod (506) is rotationally arranged at the middle part of the screw rod sliding block (507), a positioning plate (509) is rotationally installed at one end of the reciprocating screw rod (506), and the positioning plate (509) is fixedly connected with the swing frame (400); a worm gear module (502) is movably arranged at one end of the reciprocating screw rod (506) away from the positioning plate (509), a rotating paddle (503) is rotationally arranged at one end of the worm gear module (502) away from the auxiliary flow guiding assembly (003), a rotating speed sensor (504) is installed at one end of the worm gear module (502) close to the auxiliary flow guiding assembly (003), a locking electric push rod (505) is fixedly installed on one side of the worm gear module (502) away from the reciprocating screw rod (506), a flow guide cover (501) is fixedly installed on the outside of the worm gear module (502), and the flow guide cover (501) is fixedly installed on the inside of the swing frame (400); the auxiliary flow guiding assembly (003) comprises a limiting plate (601), a through groove (604) is formed in the inside of the limiting plate (601), a lifting grid (600) is slidably arranged on the inside of the through groove (604), the top of the lifting grid (600) and the top of the inside of the through groove (604) are elastically connected through a plurality of groups of supporting springs (602), and a plurality of groups of inclined blocks (603) are installed on one side of the lifting grid (600) close to the swing frame (400); the auxiliary flow guiding assembly (003) comprises a plurality of groups of turnover plates (607), and the turnover plates (607) are rotationally arranged in the inside of one side of the swing frame (400) away from the flow regulating assembly (002), a turnover sleeve (606) is fixedly installed on the upper end of the turnover plate (607), a torsional spring shaft (605) is installed at the middle part of the turnover sleeve (606), and the torsional spring shaft (605) is rotationally arranged on the inside of the swing frame (400); an entering channel (101) is installed on the top of the front face of the main body bottom plate (100), a migratory channel (103) is installed on the top of the back face of the main body bottom plate (100), the migratory channel (103) is fixedly installed on one side of the limiting plate (601) away from the flow regulating assembly (002), a stagnation arc area (102) is installed on the front face of the migratory channel (103), the stagnation arc area (102) is fixedly installed on one side of the entering channel (101), and an overflow pipe (104) is connected between the upper end of the stagnation arc area (102) and the entering channel (101).The outer side of the main body bottom plate (100) is provided with a round rim wide top weir (700), and the top of the round rim wide top weir (700) is provided with a reserved groove (701), the main body bottom plate (100) is fixedly arranged at the top of the reserved groove (701), the middle part of the reserved groove (701) is provided with an impact groove (702), the limiting frame (201) is fixedly arranged at the inner side of the impact groove (702), and the front surface of the round rim wide top weir (700) is provided with a supporting seat (703), and the supporting seat (703) is located at the bottom of the main body bottom plate (100).

2. The use method of the auxiliary migration device suitable for large migratory fish according to claim 1, characterized in that: S1, the main body bottom plate (100) is fixedly installed in the reserved groove (701) of the circular rim wide top weir (700), the main body bottom plate (100) is kept close to the support seat (703), the water flow enters the inside through the flow guide cover (501), the locking electric push rod (505) is unlocked, the water flow drives the rotating paddle (503) to rotate in the entering process, the end speed sensor (504) carries out speed monitoring and rotates the number of turns in the rotating process, the rotating paddle (503) drives the worm gear module (502) to drive the reciprocating screw rod (506) in the rotating process, the screw rod slide block (507) sleeved outside the reciprocating screw rod (506) can be driven by one-way rotation, the connecting support (508) and the adjusting grid (500) are pushed and slid transversely in the sliding process, the flow space of the grid groove (405) is opened in the sliding process, so that the flow size is controlled, and the adjusting position is set according to the number of rotating turns; S2, after the water flow enters the inside through the grid groove (405), the fish swims into the inside of the entering channel (101) by sensing the water flow, and the fish swims into the inside of the swinging frame (400) in the swimming process, and is temporarily stopped; S3, the water flow at the bottom of the main body bottom plate (100) enters the inside of the limiting frame (201) through the concentrating frame (202), the water flow rotates the movable paddle (200) after entering, drives the main shaft (205) in the middle to rotate in the rotating process, controls the transmission shaft (207) to rotate at variable speed through the speed reducer (206) in the rotating process, drives the swing frame (400) to swing along the limiting shaft (401) by the sliding support (307) and the connecting column (300) at the top in the rotating process, and controls the opening area of the swing frame (400) to be close to the limiting plate (601) after swinging; S4, the arc-shaped groove (404) of the swing frame (400) contacts the inclined block (603) in the swinging process, and the inclined block (603) and the lifting grid (600) are lifted along the inclined surface, the water flow is discharged through the through groove (604) in the lifting process, and the fish in the inside of the swing frame (400) is flushed into the stagnation arc area (102), and the fish swims along the water flow of the migration channel (103) after being flushed.

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