Lifting type fishway structure

Abstract

The invention belongs to the field of fishway building design, and particularly discloses a lifting type fishway structure which comprises a fishway body, the inner wall of the water inlet end of the fishway body is fixedly connected with two partition plates which are symmetrically distributed, a retention area is formed between the two partition plates, and the tops of the partition plates are provided with first gates used for blocking the retention area. By arranging the fishway body, the auxiliary structure and the transfer structure, strong fishes can normally penetrate through the fishway body without being lifted after the fishes enter the fishway body, and weak fishes can be collected in the collecting box due to the fact that the fishes are not strong in physical strength or carry diseases and the like, so that subsequent lifting is facilitated; and the lifted fishes enter the space between the two partition plates, so that workers can conveniently check the physique and diseases of the fishes, and the situations that the fishes with poor physique or the fishes with diseases enter the upstream to influence the overall quality of the fishes and the ecological environment of the fishes is influenced by disease transmission are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fishway building design, in particular to a lifting fishway structure. Background Art

[0002] Due to the construction of water conservancy and hydropower projects, natural river channels are truncated, blocking the natural migration channels of fish. As a remedial measure, a fishway is a fish-passing building set at the river-blocking dam to communicate the fish migration channels.

[0003] After retrieval, the Chinese patent discloses a lifting fishway structure (publication number CN209429073U). After the water supply pipe fills the collecting fishpond chamber, the water overflows through the inlet section of the fish chamber to form a fish-attracting water flow. When the number of fish entering the collecting fishpond chamber reaches a certain amount, the inlet door of the collecting fishpond chamber is closed and the water supply is stopped. After the mobile trolley chamber is lifted to the top by the lifting traction device, the outlet door of the collecting fishpond chamber is opened, and the fish swim out of the collecting fishpond chamber and enter the upstream reservoir. Although this method can increase the number of fish migrations, during the migration process in the ecological environment, fish with poor physical fitness and carrying diseases will be gradually eliminated, and the direct lifting method will cause uneven fish quality and affect the overall ecology of the fish. Therefore, those skilled in the art provide a lifting fishway structure to solve the problems raised in the above background art. Summary of the Invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a lifting fishway structure to solve the problem that the direct lifting method in the prior art will cause uneven fish quality and affect the overall ecology of the fish.

[0005] To achieve the above object, the present invention provides a lifting fishway structure, including a fishway body. The inner wall of the water inlet end of the fishway body is fixedly connected with two symmetrically distributed partitions. A retention area is formed between the two partitions. A first gate for blocking the retention area is arranged at the top of the partition. A lifting mechanism is arranged at the top of the partition. A traction rope is arranged on the surface of the lifting mechanism. A transfer structure is arranged at the free end of the traction rope. An auxiliary structure is arranged on the surface of the fishway body. The inner side of the water outlet end of the fishway body is fixedly connected with two symmetrically distributed guiding blocks.

[0006] Among them, the transfer structure includes a collection box arranged inside the fishway body, and two groups of symmetrically distributed trigger structures are arranged on the surface of the collection box.

[0007] In the above technical solution, preferably, a guide rail distributed along the center line of the fishway body is fixedly connected to the inner bottom wall of the fishway body. Two guiding platforms are slidably connected to the top of the guide rail. A guiding slider slidably connected to the surface of the guide rail is fixedly connected between the two guiding platforms. A collection box is fixedly connected to the top of the two guiding platforms. Two through grooves are formed on each of the four sides of the collection box. A top rod is fixedly connected to the top of the guiding platform. One end of one of the top rods is fixedly connected to the free end of a traction rope.

[0008] In the above technical solution, preferably, two groups of first baffles are slidably connected to the surface of the collection box and are symmetrically distributed. The number of each group of first baffles is two, and the first baffles are arranged in the flowing direction of the water flow. The first baffles block the adjacent through grooves. An electric push rod is arranged inside the guiding platform. The output shaft of the electric push rod is fixedly connected to the bottom of the first baffle. A connecting rod is fixedly connected between two adjacent first baffles.

[0009] In the above technical solution, preferably, two groups of second baffles are slidably connected to the surface of the collection box. The number of each group of second baffles is two. The second baffles block the adjacent through grooves, and two adjacent second baffles are fixedly connected by a connecting rod.

[0010] In the above technical solution, preferably, the triggering structure includes a gear rotatably connected to the inner wall of the collection box. A first rack is meshed with the surface of the gear. The other side of the first rack is fixedly connected to a trigger block. The other end of the trigger block penetrates out of the collection box.

[0011] In the above technical solution, preferably, a second rack symmetrically distributed with the first rack is meshed with the surface of the gear. A connecting block is fixedly connected to the top of the second rack. One side of the connecting block penetrates out of the collection box and is fixedly connected to the surface of the adjacent second baffle. A third spring is fixedly connected between the bottom of the second rack and the inner wall of the collection box.

[0012] In the above technical solution, preferably, through holes are formed on the surfaces of the collection box, the first baffle, and the second baffle.

[0013] In the above technical solution, preferably, the auxiliary structure includes several groups of mounting shells fixedly connected to the surface of the fishway body and communicating with the fishway body. The number of each group of mounting shells is two and they are symmetrically distributed with the fishway body as the center. A slow flow area is formed between the inner side of each group of mounting shells and the fishway body. A connecting plate is fixedly connected to the top of each group of mounting shells. Two second gates symmetrically distributed are arranged on the top of the connecting plate.

[0014] In the above technical solution, preferably, two symmetrically distributed partition blocks are arranged at the center of the inner wall of the slow flow area. The cross-sectional shape of the partition block is approximately an isosceles trapezoid. Two water channels are arranged on the surface of the partition block. The bottom of the partition block is fixedly connected with a sliding rod that is slidably connected to the inner bottom wall of the slow flow area. The top of the other end of the sliding rod is fixedly connected with a mounting plate for shielding the mounting shell. The surface of the mounting plate is provided with uniformly distributed filter holes. A first spring is fixedly connected between the end of the sliding rod and the inner wall of the mounting shell.

[0015] In the above technical solution, preferably, two symmetrically distributed sealing plates are slidably connected to one side of the partition block close to the mounting plate. The sealing plates shield the water channels. A fixing rod is fixedly connected between the two sealing plates. A pressure receiving plate is fixedly connected to the surface of the lower sealing plate. A connecting frame is fixedly connected to the surface of the upper sealing plate. The other side of the connecting frame is slidably connected to one side of the partition block away from the mounting plate. The top of the upper sealing plate is fixedly connected with a limiting rod that is slidably connected to the inner wall of the partition block. A second spring is fixedly connected between the surface of the limiting rod and the inner wall of the partition block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By arranging the fishway body, the auxiliary structure and the transfer structure, after the fish enter the fishway body, the stronger fish can normally pass through the fishway body without being lifted, while the weaker fish will be collected inside the collection box due to lack of physical strength or carrying diseases, etc., which is convenient for subsequent lifting. After the lifted fish enter between the two partition plates, it is convenient for the staff to check the physical condition and diseases of the fish, avoiding the situation that fish with poor physical condition or carrying diseases enter the upper reaches, affecting the overall quality of the fish and the spread of diseases affecting the fish ecological environment.

[0018] 2. By arranging the auxiliary structure, a slow flow area can be formed in cooperation with the fishway body. The flow rate of the slow flow area enables the fish to have a certain rest space during the process of swimming along the fishway body to recover physical strength, which is convenient for subsequent continuous swimming against the resistance of the water flow. And some fish with insufficient physical strength cannot pass through the fishway body 1 as a whole and will be intercepted in the slow flow area.

[0019] 3. The mutual cooperation of the transfer structure and the auxiliary structure can, when the transfer structure moves between the two partition blocks, cut off the water flow in the slow flow area by starting the second gate, so that the water flow can only flow through the collection box, thereby attracting the fish in the slow flow area into the collection box, avoiding the situation that some fish with insufficient physical strength cannot pass through the fishway body as a whole and will be intercepted in the slow flow area, affecting the subsequent fish migration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Structural schematic diagram of the present invention;

[0021] Figure 2 Structural schematic diagram of the contact between the transfer structure and the partition of the present invention;

[0022] Figure 3 Structural schematic diagram of the transfer structure of the present invention;

[0023] Figure 4 Distribution schematic diagram of the first baffle and the second baffle of the present invention;

[0024] Figure 5 is Figure 4 enlarged view of A in

[0025] Figure 6 Partial sectional view of the transfer structure of the present invention;

[0026] Figure 7 Distribution schematic diagram of the transfer structure and the guiding block of the present invention;

[0027] Figure 8 Connection schematic diagram of the auxiliary structure and the fishway body of the present invention;

[0028] Figure 9 Connection schematic diagram of the partition block and the mounting plate of the present invention;

[0029] Figure 10 Distribution schematic diagram of the sealing plate, the water passage groove and the connecting frame of the present invention.

[0030] In the figure: 1. Fishway body; 101. Partition; 102. First gate; 103. Guiding block; 2. Auxiliary structure; 201. Mounting shell; 202. Connecting plate; 203. Second gate; 204. Partition block; 205. Sliding rod; 206. First spring; 207. Mounting plate; 208. Water passage groove; 209. Fixed rod; 210. Pressure receiving plate; 211. Connecting frame; 212. Sealing plate; 213. Second spring; 214. Limiting rod; 3. Transfer structure; 301. Collection box; 302. Guide platform; 303. First baffle; 304. Electric push rod; 305. Second baffle; 306. Through hole; 307. Through groove; 308. Guide slider; 309. Connecting rod; 310. Thrust rod; 31. Trigger structure; 3101. Trigger block; 3102. First rack; 3103. Second rack; 3104. Gear; 3105. Connecting block; 3106. Third spring; 4. Lifting mechanism; 401. Traction rope. Detailed implementation manners

[0031] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0032] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.

[0033] As Figures 1-10 shown, a lifting fishway structure includes a fishway body 1. Two symmetrically distributed partitions 101 are fixedly connected to the inner wall of the water inlet end of the fishway body 1. A retention area is formed between the two partitions 101. A first gate 102 for blocking the retention area is provided at the top of the partition 101. A lifting mechanism 4 is provided at the top of the partition 101. A towing rope 401 is provided on the surface of the lifting mechanism 4. A transfer structure 3 is provided at the free end of the towing rope 401. An auxiliary structure 2 is provided on the surface of the fishway body 1. Two symmetrically distributed guiding blocks 103 are fixedly connected to the inner side of the water outlet end of the fishway body 1.

[0034] Among them, the transfer structure 3 includes a collection box 301 provided inside the fishway body 1. Two groups of symmetrically distributed trigger structures 31 are provided on the surface of the collection box 301.

[0035] The inner bottom wall of the fishway body 1 is fixedly connected with a guide rail distributed along the center line of the fishway body 1. Two guiding platforms 302 are slidably connected to the top of the guide rail. A guiding slider 308 slidably connected to the surface of the guide rail is fixedly connected between the two guiding platforms 302. The collection box 301 is fixedly connected to the top of the two guiding platforms 302. Two through grooves 307 are provided on each of the four sides of the collection box 301. A top rod 310 is fixedly connected to the top of the guiding platform 302. One end of one of the top rods 310 is fixedly connected to the free end of the towing rope 401.

[0036] Among them, the lifting mechanism 4 is a common technical means in the prior art applications. The winch method can be used to cooperate with the towing rope 401 to drive the top rod 310 to move the guiding platform 302 synchronously, so as to drive the collection box 301 to slide along the guide rail, so as to achieve the effect of moving from the water outlet end to the water inlet end of the fishway body 1, so that the fish collected inside the collection box 301 can be moved to the upstream, facilitating the migration of fish.

[0037] The setting of the guiding block 103 can be used to form a fish-attracting water flow to conveniently attract fish to enter the interior of the collection box 301 through the through groove 307, and then enter the interior of the fishway body 1 through the through groove 307 and swim along the fishway body 1. During this process, relatively strong fish can normally pass through the fishway body 1 without being lifted, while weaker fish will be collected inside the collection box 301 due to exhaustion or diseases for subsequent lifting. After the lifted fish enter between the two partitions 101, it is convenient for staff to check the physical condition and diseases of the fish, avoiding the situation where fish with poor physical condition or carrying diseases enter the upstream, affecting the overall quality of the fish and the spread of diseases, which may affect the fish ecological environment.

[0038] As Figures 1-10 shown, there are two groups of first baffles 303 symmetrically distributed on the surface of the collection box 301 and slidingly connected thereto. The number of each group of first baffles 303 is two, and the setting position of the first baffles 303 is in the flowing direction of the water flow. The first baffles 303 block the adjacent through grooves 307. An electric push rod 304 is arranged inside the guiding platform 302, and the output shaft of the electric push rod 304 is fixedly connected to the bottom of the first baffle 303. A connecting rod 309 is fixedly connected between two adjacent first baffles 303.

[0039] There are two groups of second baffles 305 slidingly connected to the surface of the collection box 301. The number of each group of second baffles 305 is two. The second baffles 305 block the adjacent through grooves 307, and a connecting rod 309 is fixedly connected between two adjacent second baffles 305.

[0040] Through holes 306 are formed on the surfaces of the collection box 301, the first baffles 303, and the second baffles 305.

[0041] When the collection box 301 is located between the two guiding blocks 103, at this time, the electric push rod 304 drives the connected first baffle 303 to move upward and be misaligned with the adjacent through groove 307, so that fish can normally pass through the collection box 301. During the transfer process, the electric push rod 304 drives the first baffle 303 to reset, which can ensure that fish will not flow out of the interior of the collection box 301. The setting of the through holes 306 can ensure that water can normally pass through the collection box 301, maintaining a good living environment for the fish inside the collection box 301 during both the collection process and the transfer process.

[0042] As Figures 1-10 shown, the triggering structure 31 includes a gear 3104 rotatably connected to the inner wall of the collection box 301. A first rack 3102 is meshed with the surface of the gear 3104. The other side of the first rack 3102 is fixedly connected to a trigger block 3101, and the other end of the trigger block 3101 penetrates out of the collection box 301.

[0043] The surface of the gear 3104 is meshed and connected with a second rack 3103 symmetrically distributed with the first rack 3102. A connecting block 3105 is fixedly connected to the top of the second rack 3103. One side of the connecting block 3105 penetrates out of the collection box 301 and is fixedly connected to the surface of the adjacent second baffle 305. A third spring 3106 is fixedly connected between the bottom of the second rack 3103 and the inner wall of the collection box 301.

[0044] By moving down the trigger block 3101, the first rack 3102 can be driven to move down. During this process, the gear 3104 can be driven to rotate, thereby driving the second rack 3103 to move up and stretching the third spring 3106 at the same time. During the process of the second rack 3103 moving up, the second baffle 305 can be driven to move up synchronously through the connecting block 3105, so that the second baffle 305 is misaligned with the adjacent through groove 307, enabling the fish to flow through the through groove 307.

[0045] As Figures 1-10 shown, the auxiliary structure 2 includes several groups of mounting shells 201 fixedly connected to the surface of the fishway body 1 and communicating with the fishway body 1. The number of each group of mounting shells 201 is two and they are symmetrically distributed with the fishway body 1 as the center. A slow flow area is formed between the inner side of each group of mounting shells 201 and the fishway body 1. A connecting plate 202 is fixedly connected to the top of each group of mounting shells 201. There are two second gates 203 symmetrically distributed on the top of the connecting plate 202.

[0046] At the center of the inner wall of the slow flow area, there are two partition blocks 204 symmetrically distributed. The cross-sectional shape of the partition block 204 is approximately an isosceles trapezoid. There are two water through grooves 208 on the surface of the partition block 204. The bottom of the partition block 204 is fixedly connected to a sliding rod 205 slidably connected to the inner bottom wall of the slow flow area. The other end of the sliding rod 205 is fixedly connected to a mounting plate 207 for shielding the mounting shell 201. The surface of the mounting plate 207 is provided with uniformly distributed filter holes. A first spring 206 is fixedly connected between the end of the sliding rod 205 and the inner wall of the mounting shell 201.

[0047] On one side of the partition block 204 close to the mounting plate 207, there are two sealing plates 212 symmetrically distributed and slidably connected. The sealing plates 212 shield the water through grooves 208. A fixing rod 209 is fixedly connected between the two sealing plates 212. A pressure receiving plate 210 is fixedly connected to the surface of the lower sealing plate 212. A connecting frame 211 is fixedly connected to the surface of the upper sealing plate 212. The other side of the connecting frame 211 is slidably connected to one side of the partition block 204 away from the mounting plate 207. The top of the upper sealing plate 212 is fixedly connected to a limiting rod 214 slidably connected to the inner wall of the partition block 204. A second spring 213 is fixedly connected between the surface of the limiting rod 214 and the inner wall of the partition block 204.

[0048] The setting of the installation shell 201 can increase the area at the position of the fishway body 1 connected thereto, thereby reducing the flow velocity in the slow-flow area, enabling fish to have a certain rest space during the process of swimming along the fishway body 1 to recover physical strength, facilitating subsequent continuous swimming against the resistance of the water flow. And some fish with insufficient physical strength to swim through the fishway body 1 as a whole will be intercepted in the slow-flow area;

[0049] During the upward movement of the transfer structure 3 under the action of the lifting mechanism 4, the inclined surfaces of the two partition blocks 204 can be pushed by the ejector rod 310, so that the two partition blocks 204 are separated from each other until the collection box 301 passes through. During the separation of the two partition blocks 204, the sliding rod 205 can be driven to drive the mounting plate 207 to move synchronously, thus avoiding squeezing the fish, and the first spring 206 is compressed during the support process. After the collection box 301 is separated from the partition block 204, the two partition blocks 204 can be driven to reset under the action of the first spring 206;

[0050] When the collection box 301 is located between the two partition blocks 204, the continuous lifting of the collection box 301 can be stopped, and the second gate 203 can be activated to cut off the water flow in the slow-flow area, so that the water can only be discharged through the collection box 301. During the downward movement of the second gate 203, the pressure plate 210 can be pressured, so that the pressure plate 210 drives the sealing plate 212 connected thereto to move downward synchronously, and then drives another sealing plate 212 to move downward together under the action of the fixed rod 209 and drives the connecting frame 211 to press the trigger block 3101. At this time, the sealing plate 212 can be misaligned with the water passing groove 208, and the second baffle 305 can be misaligned with the adjacent through groove 307 under the action of the trigger structure 31. Under the action of the second gate 203 cutting off the water flow in the slow-flow area, part of the water passing through the collection box 301 can bypass the second gate 203 through the through hole 306, the through groove 307 and the water passing groove 208, so as to attract the fish in the slow-flow area to enter the interior of the collection box 301, so as to be lifted to between the partition plates 101 together.

[0051] Working principle: The setting of the guiding block 103 can be used to form a fish-attracting water flow to conveniently attract fish to enter the interior of the collection box 301 through the through groove 307, and then enter the interior of the fishway body 1 through the through groove 307 and swim along the fishway body 1. During this process, stronger fish can normally pass through the fishway body 1 without being lifted, while weaker fish will be collected inside the collection box 301 due to physical exhaustion or carrying diseases, etc., for subsequent lifting. After the lifted fish enter between the two partition plates 101, it is convenient for the staff to check the physical condition and diseases of the fish, avoiding the situation where fish with poor physical condition or carrying diseases enter the upstream, affecting the overall quality of the fish and the spread of diseases, which may affect the fish ecological environment. During the lifting process, when the collection box 301 is located between the two partition blocks 204, the lifting of the collection box 301 can be stopped, and the second gate 203 can be activated to cut off the water flow in the slow-flow area, so that the water can only be discharged through the collection box 301. During the downward movement of the second gate 203, the pressure plate 210 can be pressed, so that the pressure plate 210 drives the sealing plate 212 connected thereto to move downward synchronously. Then, under the action of the fixed rod 209, another sealing plate 212 is driven to move downward together, and the connecting frame 211 is driven to press the trigger block 3101. At this time, the sealing plate 212 can be misaligned with the water through groove 208, and the second baffle 305 can be misaligned with the adjacent through groove 307 under the action of the trigger structure 31. Under the action of the second gate 203 cutting off the water flow in the slow-flow area, part of the water passing through the collection box 301 can bypass the second gate 203 through the through hole 306, the through groove 307 and the water through groove 208, so as to attract the fish in the slow-flow area to enter the interior of the collection box 301, so as to be lifted to between the partition plates 101 together.

[0052] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting fishway structure, comprising a fishway body (1), characterized in that: The inner wall of the water inlet end of the fishway body (1) is fixedly connected with two symmetrically distributed partitions (101), a retention area is formed between the two partitions (101), a first gate (102) for blocking the retention area is arranged on the top of the partition (101), a lifting mechanism (4) is arranged on the top of the partition (101), a traction rope (401) is arranged on the surface of the lifting mechanism (4), and a transfer structure (3) is arranged at the free end of the traction rope (401), an auxiliary structure (2) is arranged on the surface of the fishway body (1), and two symmetrically distributed guide blocks (103) are fixedly connected to the inner side of the water outlet end of the fishway body (1); The transfer structure (3) comprises a collection box (301) arranged inside the fishway body (1), and two groups of symmetrically distributed trigger structures (31) are arranged on the surface of the collection box (301).

2. The lifting fishway structure according to claim 1, characterized in that: The inner bottom wall of the fishway body (1) is fixedly connected to a guide rail distributed along the center line of the fishway body (1); the top of the guide rail is slidably connected to two guide platforms (302); a guide slider (308) slidably connected to the surface of the guide rail is fixedly connected between the two guide platforms (302); the tops of the two guide platforms (302) are fixedly connected to a collection box (301); four sides of the collection box (301) are provided with two through grooves (307); the top of the guide platform (302) is fixedly connected to a top rod (310); one end of one of the top rods (310) is fixedly connected to the free end of the traction rope (401).

3. The lifting fishway structure according to claim 2, characterized in that: The surface of the collection box (301) is slidably connected with two groups of symmetrically distributed first baffles (303), each group of the first baffles (303) has two first baffles (303), and the first baffles (303) are arranged in the direction of water flow. The first baffles (303) shield the adjacent through grooves (307). An electric push rod (304) is arranged inside the guide platform (302), and the output shaft of the electric push rod (304) is fixedly connected to the bottom of the first baffle (303), and a connecting rod (309) is fixedly connected between two adjacent first baffles (303).

4. The lifting fishway structure according to claim 3, characterized in that: The surface of the collection box (301) is slidably connected with two groups of second baffles (305), each group of second baffles (305) having two second baffles (305), the second baffles (305) shield adjacent through slots (307), and two adjacent second baffles (305) are fixedly connected via a connecting rod (309).

5. The lifting fishway structure according to claim 4, characterized in that: The trigger structure (31) comprises a gear (3104) rotatably connected to the inner wall of the collection box (301); the surface of the gear (3104) is meshingly connected to a first rack (3102); the other side of the first rack (3102) is fixedly connected to a trigger block (3101); the other end of the trigger block (3101) passes through the collection box (301).

6. The lifting fishway structure according to claim 5, characterized in that: The surface of the gear (3104) is meshingly connected with a second rack (3103) symmetrically distributed with the first rack (3102); the top of the second rack (3103) is fixedly connected with a connecting block (3105); one side of the connecting block (3105) passes through the collection box (301) and is fixedly connected to the surface of the adjacent second baffle (305); a third spring (3106) is fixedly connected between the bottom of the second rack (3103) and the inner wall of the collection box (301).

7. The lifting fishway structure according to claim 6, characterized in that: Through holes (306) are provided on the surfaces of the collection box (301), the first baffle (303) and the second baffle (305).

8. The lifting fishway structure according to claim 1, characterized in that: The auxiliary structure (2) comprises a plurality of groups of mounting shells (201) fixedly connected to the surface of the fishway body (1) and connected to the fishway body (1), each group of the mounting shells (201) having two members symmetrically distributed around the fishway body (1), a slow flow zone formed between the inner side of each group of the mounting shells (201) and the fishway body (1), a connecting plate (202) fixedly connected to the top of each group of the mounting shells (201), and two second gates (203) symmetrically distributed are arranged on the top of the connecting plate (202).

9. The lifting fishway structure according to claim 8, characterized in that: Two symmetrically distributed partition blocks (204) are arranged at the center of the inner wall of the slow flow zone, the cross-sectional shape of the partition block (204) is approximately an isosceles trapezoid, and two water channels (208) are provided on the surface of the partition block (204). A sliding rod (205) is fixedly connected to the bottom of the partition block (204) and is slidably connected to the bottom wall of the slow flow zone. A mounting plate (207) for shielding the mounting shell (201) is fixedly connected to the top of the other end of the sliding rod (205). Evenly distributed filter holes are provided on the surface of the mounting plate (207), and a first spring (206) is fixedly connected between the end of the sliding rod (205) and the inner wall of the mounting shell (201).

10. The lifting fishway structure according to claim 9, characterized in that: The side of the partition block (204) close to the mounting plate (207) is slidably connected with two symmetrically distributed sealing plates (212), the sealing plates (212) shield the water trough (208), a fixing rod (209) is fixedly connected between the two sealing plates (212), the surface of the lower sealing plate (212) is fixedly connected with a pressure plate (210), the surface of the upper sealing plate (212) is fixedly connected with a connecting frame (211), the other side of the connecting frame (211) is slidably connected with the side of the partition block (204) away from the mounting plate (207), the top of the upper sealing plate (212) is fixedly connected with a limiting rod (214) slidably connected to the inner wall of the partition block (204), and a second spring (213) is fixedly connected between the surface of the limiting rod (214) and the inner wall of the partition block (204).

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