River ecological restoration is used half floating type artificial fish nest mobile device

Abstract

The application discloses a kind of river ecological restoration with semi-floating artificial fish nest mobile device of artificial fish nest technical field, including square and by hollow cylinder composition's floating frame, first air bag being arranged in floating frame;The application is in the process of placing artificial fish nest in river, by tuft and protective cylinder, when artificial fish nest is used, tuft is unfolded to the lower of protective cylinder, there is no obstruction outside tuft, fish can swim to tuft from all around and spawn on the surface of the flexible matrix of tuft, avoid the situation that fish aggregation occurs and snatch spawning position;When the river flow velocity exceeds threshold value, by detection fan blade, rotating shaft and rotating rod, pull rope is wound, so that tuft is pulled up to the inside of protective cylinder, protective cylinder can block the impact of water flow, protect the fish egg attached to the surface of flexible matrix on tuft, so that tuft can move to protective cylinder when river flow speeds up and carry out automatic protection.

Description

Technical Field

[0001] This invention relates to the field of artificial fish nest technology, specifically to a semi-floating artificial fish nest mobile device for river ecological restoration. Background Technology

[0002] Artificial fish nests provide an attachment surface for fish that lay adhesive eggs (such as carp and crucian carp) by simulating the natural aquatic plant environment (such as flexible substrates like bamboo leaves and palm fronds). This can significantly improve the fertilization and hatching rates of fish eggs and provide a safe haven for juvenile fish, reducing the risk of predation.

[0003] Current technologies for using artificial fish nests typically employ natural stones, wooden stakes, and branches to mitigate the impact of water flow around the nest. However, this obstructs the free swimming path of fish, causing them to congregate and compete for limited entrances during peak spawning seasons, increasing the instability of egg attachment. Static protective structures cannot automatically adjust to water flow speed, and the impact of sudden increases in water flow during the rainy season can still cause fish eggs to detach, thus reducing their survival rate. On the other hand, setting up rigid baffles or barrier nets to restrict water flow disrupts natural water flow patterns, affects oxygen exchange in the local water area, and exacerbates the risk of oxygen deprivation for fish eggs. Summary of the Invention

[0004] The purpose of this invention is to provide a semi-floating artificial fish nest mobile device for river ecological restoration, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a semi-floating artificial fish nest mobile device for river ecological restoration, comprising a square floating frame composed of hollow cylinders, a first airbag disposed inside the floating frame, a fixing rod, an installation frame sliding on the surface of the fixing rod, a connecting rod mounted on the installation frame, and a cluster of tendrils hinged to the bottom of the connecting rod. The surface of the cluster of tendrils is used to install a flexible substrate for attaching fish eggs. A protective cylinder is disposed below the floating frame, and the fixing rod and the installation frame are both located inside the protective cylinder. The bottom of the floating frame is equipped with a U-shaped fixing plate with a detection fan blade that rotates around a rotation axis. The detection fan blade is used to detect the speed of the water flow in the river. A rotating rod is fixedly connected to the end of the rotating shaft, and a pulling rope is fixedly connected to the surface of the rotating rod. A rotating column is rotatably connected to the bottom of the floating frame. The pulling rope passes around the rotating column and extends from the top of the protective cylinder into the interior and connects to the mounting frame.

[0006] As a further embodiment of the present invention, the floating frame is provided with adjustment mechanisms on both the left and right sides. The adjustment mechanism includes a water storage tank installed on the surface of the floating frame. The bottom of the water storage tank is provided with multiple one-way water inlets. The side of the water storage tank away from the floating frame is elastically and slidably sealed with a sliding plate. The surface of the sliding plate is provided with multiple one-way water outlets. An extension plate that bends downward and extends away from the sliding plate is fixedly connected to the surface of the sliding plate.

[0007] As a further embodiment of the present invention, two fixing frames are fixedly connected to the bottom of the fixing plate, the two fixing frames are located below the water storage tank, the rotating shaft is rotatably installed inside the fixing frames, and the bottom of the fixing rod is fixedly connected to an anchor block by a rope, the anchor block being used to limit the floating range of the floating frame.

[0008] As a further embodiment of the present invention, a baffle plate is fixedly installed on the upper side of the floating frame by a plurality of support rods.

[0009] As a further embodiment of the present invention, the protective cylinder is composed of multiple arc-shaped guide plates, adjacent guide plates have different orientations, the ends of the multiple guide plates are not connected, and an S-shaped gap is left between the multiple guide plates.

[0010] As a further embodiment of the present invention, the bottom of the floating frame is elastically slidably connected with a plurality of blocking plates, the plurality of blocking plates respectively abutting the surfaces of the plurality of guide plates on the inner side, and a triangular actuating plate is fixedly connected to the surface of the blocking plate, the actuating plate being positioned above the mounting frame.

[0011] As a further embodiment of the present invention, a second airbag is fixedly installed at the bottom of the shield plate and communicates with the first airbag through a connecting pipe. The connecting pipe passes through the floating frame. A squeezing plate is provided below the first airbag inside the floating frame. A pushing plate that passes through the floating frame is fixedly connected to the bottom of the squeezing plate. The pushing plate is located above the mounting frame. When the mounting frame moves upward, it squeezes the pushing plate to move into the floating frame. A water-permeable hole is provided on the surface of the floating frame.

[0012] As a further embodiment of the present invention, a horn-shaped drainage frame is fixedly connected to the surface of the fixed frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are: In the process of placing artificial fish nests in waterways, this invention utilizes a cluster of barbels and a protective cylinder. When the artificial fish nest is in use, the barbels extend to the bottom of the protective cylinder, leaving the outside of the barbels unobstructed. Fish can swim from all sides to the barbels and spawn on the flexible substrate surface of the barbels, avoiding competition for spawning positions due to fish gathering. When the water flow velocity in the waterway exceeds a threshold, a detection fan blade, a rotating shaft, and a rotating rod are used to reel in the pulling rope, thereby pulling the barbels upward into the protective cylinder. The protective cylinder can block the impact of the water flow and protect the fish eggs attached to the flexible substrate surface of the barbels. This allows the barbels to move into the protective cylinder for automatic protection when the water flow accelerates, preventing the fish eggs attached to the flexible substrate surface of the barbels from falling off due to high water flow velocity, thus reducing the survival rate of the fish eggs.

[0014] In this invention, when the floating frame moves closer to the shore, the extension plate first contacts the shore. Then, as the floating frame continues to move closer to the shore, the extension plate pushes the sliding plate into the water storage tank. The water inside the water storage tank is squeezed by the sliding plate and sprayed out through the one-way outlet. The sprayed water can provide a pushing force to the floating frame away from the shore, thereby enabling the floating frame to move away from the shore. This prevents the barbels from contacting the riverbed when the floating frame moves towards the shore, thus preventing the fish eggs attached to the flexible substrate surface on the barbels from detaching.

[0015] During the placement of artificial fish nests, tools are used to fix anchor blocks to the bottom of the river at a predetermined location. The length of the rope is adjusted to keep the floating frame at the water surface. During the use of the fish nests, the anchor blocks and ropes can limit the floating range of the floating frame, preventing it from being carried to other locations by the water flow and affecting the normal spawning of fish. They can also prevent the floating frame from tipping over. The fixed frame allows the water flow in a fixed direction to drive the detection fan blades to rotate, avoiding the influence of turbulence in the water flow. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-section of the present invention; Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram showing the connection relationship between the floating frame, the fixing rod, the mounting frame, and the rope in this invention; Figure 5 This is a schematic diagram showing the positional relationship between the floating frame and the pulling mechanism in this invention; Figure 6 for Figure 5 Schematic diagram of the structure at point B; Figure 7 This is a structural diagram showing the positional relationship between the floating frame, the guide plate, and the mounting frame in this invention; Figure 8 for Figure 7 Schematic diagram of the structure at point C; Figure 9 This is a structural diagram showing the positional relationship between the floating frame, the fixed rod, the mounting frame, and the baffle plate in this invention; Figure 10 This is a schematic diagram of the structure after the floating frame and the first airbag are separated in this invention; Figure 11 This is a structural schematic diagram showing the positional relationship between some of the guide plates, baffle plates, and mounting frames in this invention; Figure 12 This is a schematic diagram of the tuft of hairs, the first air bladder, and the second air bladder in their normal state. Figure 13 This is a schematic diagram showing the process of the whiskers being retracted into the protective cylinder, the first airbag being compressed, and the second airbag inflating.

[0017] In the attached diagram: 1-Floating frame, 2-First airbag, 3-Fixing rod, 4-Mounting frame, 5-Connecting rod, 6-Ternary tendrils, 7-Rope, 8-Anchor block, 9-Protective cylinder, 10-Water storage tank, 11-One-way inlet, 12-Sliding plate, 13-One-way outlet, 14-Extension plate, 15-Fixing plate, 16-Fixing frame, 17-Rotating shaft, 18-Detection fan blade, 19-Rotating rod, 20-Pull rope, 21-Rotating column, 22-Support rod, 23-Baffle plate, 24-Guide plate, 25-Blocking plate, 26-Pulling plate, 27-Second airbag, 28-Connecting pipe, 29-Squeezing plate, 30-Pushing plate, 31-Water inlet, 32-Drainage frame. Detailed Implementation

[0018] Please see Figures 1-13 The present invention provides a technical solution: a semi-floating artificial fish nest mobile device for river ecological restoration, comprising a square floating frame 1 composed of hollow cylinders, a first airbag 2 disposed inside the floating frame 1, a fixing rod 3, an installation frame 4 sliding on the surface of the fixing rod 3, a connecting rod 5 mounted on the installation frame 4, and a cluster of tendrils 6 hinged to the bottom of the connecting rod 5. The surface of the cluster of tendrils 6 is used to install a flexible substrate for attaching fish eggs. A protective cylinder 9 is disposed below the floating frame 1, and the fixing rod 3 and the installation frame 4 are both located inside the protective cylinder 9. The bottom of the floating frame 1 is equipped with a U-shaped fixing plate 15, which is equipped with a detection fan blade 18 that rotates around the rotating shaft 17. The detection fan blade 18 is used to detect the speed of the water flow in the river. A rotating rod 19 is fixedly connected to the end of the rotating shaft 17, and a pulling rope 20 is fixedly connected to the surface of the rotating rod 19. A rotating column 21 is rotatably connected to the bottom of the floating frame 1. The pulling rope 20 passes around the rotating column 21 and extends from the top of the protective cylinder 9 to the interior and connects to the mounting frame 4. During the process of placing artificial fish nests in the river, it is necessary to first move them to a position of appropriate depth in the river, and then put the floating frame 1 into the river. The installation frame 4 will be positioned at the bottom of the fixed plate 15 under the action of gravity. The barbels 6 will unfold to the bottom of the protective cylinder 9. The outside of the barbels 6 will not be blocked, and fish can swim from all sides to the barbels 6 and lay eggs on the flexible substrate surface of the barbels 6, avoiding the situation of fish gathering and competing for spawning positions. The detection fan blade 18 drives the rotating shaft 17 to rotate with the water flow. When the water flow speed exceeds the threshold, the rotating shaft 17 will drive the rotating rod 19 to rotate and wind up the pulling rope 20. After the pulling rope 20 passes around the rotating column 21, it pulls the mounting frame 4, connecting rod 5 and tuft 6 upward into the protective cylinder 9. The protective cylinder 9 can block the impact of the water flow and protect the fish eggs attached to the flexible substrate surface on the tuft 6. This allows the tuft 6 to move into the protective cylinder 9 for automatic protection when the river flow speed increases, preventing the fish eggs attached to the flexible substrate surface on the tuft 6 from falling off due to the high water flow speed, thereby reducing the survival rate of the fish eggs.

[0019] During the placement of artificial fish nests in the river, the fish nests are usually placed close to the bank, which can easily cause the tufts 6 to become stranded. As a further solution of the present invention, the floating frame 1 is provided with adjustment mechanisms on both the left and right sides. The adjustment mechanism includes a water storage tank 10 installed on the surface of the floating frame 1. The bottom of the water storage tank 10 is provided with multiple one-way water inlets 11. The side of the water storage tank 10 away from the floating frame 1 is elastically and slidably sealed with a sliding plate 12. The surface of the sliding plate 12 is provided with multiple one-way water outlets 13. An extension plate 14 that bends downward and extends away from the sliding plate 12 is fixedly connected to the surface of the sliding plate 12. During the placement of the artificial fish nest, the position and orientation of the floating frame 1 are adjusted so that the water tank 10 faces the shore. The fan blade 18 is aligned with the direction of the water flow. As the floating frame 1 moves closer to the shore, the extension plate 14 first contacts the shore. Then, as the floating frame 1 continues to move closer to the shore, the extension plate 14 pushes the sliding plate 12 into the water tank 10. The water inside the water tank 10 is squeezed by the sliding plate 12 and sprayed out through the one-way outlet 13. The sprayed water can provide a pushing force for the floating frame 1 to move away from the shore, thereby enabling the floating frame 1 to move away from the shore. This prevents the fish eggs attached to the flexible substrate surface on the float 6 from detaching when the float 1 moves towards the shore and comes into contact with the riverbed.

[0020] After the artificial fish nest is placed, the floating range of the artificial fish nest cannot be determined. As a further solution of the present invention, two fixed frames 16 are fixedly connected to the bottom of the fixed plate 15. The two fixed frames 16 are located below the water storage tank 10. The rotating shaft 17 is rotatably installed inside the fixed frame 16. The bottom of the fixed rod 3 is fixedly connected to the anchor block 8 by the rope 7. The anchor block 8 is used to limit the floating range of the floating frame 1. During the placement of the artificial fish nest, the anchor block 8 is fixed to the bottom of the river at a predetermined location using tools, and the length of the rope 7 is adjusted so that the floating frame 1 is at the water surface. Subsequently, during the use of the fish nest, the anchor block 8 and the rope 7 can limit the floating range of the floating frame 1, preventing the floating frame 1 from being carried to other locations by the water flow and affecting the normal spawning of fish, and can also prevent the floating frame 1 from overturning. The fixed frame 16 can drive the detection fan blade 18 to rotate by the water flow in a fixed direction, avoiding the influence of turbulence in the water flow.

[0021] During the use of artificial fish nests, direct sunlight on fish eggs can affect their hatching. As a further solution of the present invention, a shielding plate 23 is fixedly installed on the upper side of the floating frame 1 by multiple support rods 22. During the use of artificial fish nests, the shielding plate 23 can block the sunlight shining on the floating frame 1, preventing direct sunlight from affecting the spawning and hatching of fish.

[0022] During the use of the artificial fish nest, when the tuft of barbels 6 moves into the protective cylinder 9, there are more fish eggs attached to the surface of the tuft of barbels 6, and the exchange between the water flow inside the protective cylinder 9 and the water flow outside the protective cylinder 9 is reduced. The water flow inside the protective cylinder 9 has less oxygen content, which can easily lead to oxygen deficiency of the fish eggs. As a further solution of the present invention, the protective cylinder 9 is composed of multiple arc-shaped guide plates 24. The adjacent guide plates 24 face different directions, the ends of the multiple guide plates 24 are not connected, and there is an S-shaped gap between the multiple guide plates 24. During the use of artificial fish nests, when the mounting frame 4, connecting rod 5, and tufted barbels 6 are moved into the protective cylinder 9, the water flow impacts the surface of the protective cylinder 9. Through the arc-shaped guidance of the guide plate 24, the impact force of the water flow is significantly reduced. Some of the water flow enters the protective cylinder 9 through the gaps between the guide plates 24 at a controllable rate, thereby forming a circulation of the slow-flowing water inside and outside the protective cylinder 9, increasing the dissolved oxygen content in the local water area, and preventing the fish eggs from experiencing a decrease in survival rate due to lack of oxygen.

[0023] During the use of artificial fish nests, when the water flow in the river is fast, the water flow between the guide plates 24 will still have a certain impact. As a further solution of the present invention, multiple baffle plates 25 are elastically slidably connected to the bottom of the floating frame 1. The multiple baffle plates 25 are respectively attached to the surface of the multiple guide plates 24 on the inner side. A triangular actuating plate 26 is fixedly connected to the surface of the baffle plate 25. The actuating plate 26 is located above the mounting frame 4. During the use of artificial fish nests, when the river flow accelerates, the pull rope 20 pulls the installation frame 4 into the protective cylinder 9. When the installation frame 4 moves to the position of the deflector plate 26 and squeezes the deflector plate 26, the deflector plate 26 drives the blocking plate 25 to move along the surface of the inner guide plate 24. The blocking plate 25 moves between the inner and outer guide plates 24, which can block part of the gap between the inner and outer guide plates 24, thereby further limiting the flow velocity of the water and reducing the flow velocity to an appropriate speed. This ensures the stability of the fish eggs inside the protective cylinder 9 and prevents the fish eggs from falling off under the impact of the water flow, thus affecting the survival rate of the fish eggs.

[0024] During the use of artificial fish nests, after the installation frame 4 is lifted into the protective cylinder 9, the tufts 6 are close to the water surface. When the sunlight is strong at noon, the temperature near the water surface is too high, which affects the hatching of fish eggs. As a further solution of the present invention, a second airbag 27 is fixedly installed at the bottom of the shielding plate 23 and is connected to the first airbag 2 through the connecting pipe 28. The connecting pipe 28 passes through the floating frame 1. A squeezing plate 29 is provided below the first airbag 2 inside the floating frame 1. A pushing plate 30 that passes through the floating frame 1 is fixedly connected to the bottom of the squeezing plate 29. The pushing plate 30 is located above the installation frame 4. When the installation frame 4 moves upward, it squeezes the pushing plate 30 to move into the floating frame 1. A water vent 31 is opened on the surface of the floating frame 1. During the use of artificial fish nests, when the river current is high, the installation frame 4 will be pulled into the protective cylinder 9. When the installation frame 4 is pulled to the position of the push plate 30, the installation frame 4 pushes the push plate 30 and the squeeze plate 29 upwards simultaneously. The squeeze plate 29 squeezes the first airbag 2, and the air in the first airbag 2 enters the second airbag 27 through the connecting pipe 28. Water enters the floating frame 1 through the water inlet 31. The buoyancy of the floating frame 1 decreases, causing it to sink below the water surface. The second airbag 27 expands and moves to the water surface, generating buoyancy to support the floating frame 1. This helps the installation frame 4 and the barbels 6, which have moved into the protective cylinder 9, to sink to the middle layer of the water. This prevents the fish eggs attached to the flexible substrate surface on the barbels 6 from being too close to the water surface and exposed to the high temperature environment of sunlight, which would cause the fish eggs to die and reduce the survival rate of the fish eggs.

[0025] During the use of the artificial fish nest, it was found that the water flow range of the fan blade 18 was small. As a further solution of the present invention, a horn-shaped diversion frame 32 is fixedly connected to the surface of the fixed frame 16. During the use of artificial fish nests, the diversion frame 32 can increase the water flow range through the detection fan blade 18, ensuring that the detection fan blade 18 pulls on the installation frame 4, and preventing the installation frame 4 from falling out of the protective cylinder 9 in time when the water flow speed changes because the water flow range through the detection fan blade 18 is too small.

Claims

1. A semi-floating artificial fish nest mobile device for river ecological restoration, comprising a square floating frame (1) composed of hollow cylinders, a first airbag (2) disposed inside the floating frame (1), a fixing rod (3), an installation frame (4) sliding on the surface of the fixing rod (3), a connecting rod (5) mounted on the installation frame (4), and a cluster of tendrils (6) hinged to the bottom of the connecting rod (5), wherein the surface of the cluster of tendrils (6) is used to install a flexible substrate for attaching fish eggs, characterized in that: A protective cylinder (9) is provided below the floating frame (1), and the fixing rod (3) and the mounting frame (4) are both located inside the protective cylinder (9); The bottom of the floating frame (1) is provided with a detection fan blade (18) that rotates around the rotating shaft (17) via a U-shaped fixing plate (15). The detection fan blade (18) is used to detect the speed of the water flow in the river channel. A rotating rod (19) is fixedly connected to the end of the rotating shaft (17). A pulling rope (20) is fixedly connected to the surface of the rotating rod (19). A rotating column (21) is rotatably connected to the bottom of the floating frame (1). The pulling rope (20) passes around the rotating column (21) and extends from the top of the protective cylinder (9) into the interior and connects to the mounting frame (4). The floating frame (1) is provided with adjustment mechanisms on both the left and right sides. The adjustment mechanism includes a water storage tank (10) installed on the surface of the floating frame (1). The bottom of the water storage tank (10) is provided with multiple one-way water inlets (11). The water storage tank (10) is elastically and slidably sealed with a sliding plate (12) on the side away from the floating frame (1). The surface of the sliding plate (12) is provided with multiple one-way water outlets (13). An extension plate (14) that bends downward and extends away from the sliding plate (12) is fixedly connected to the surface of the sliding plate (12). A baffle plate (23) is fixedly installed on the upper side of the floating frame (1) by multiple support rods (22); The bottom of the shield (23) is fixedly installed with a second airbag (27) that is connected to the first airbag (2) through a connecting pipe (28). The connecting pipe (28) passes through the floating frame (1). Inside the floating frame (1), below the first airbag (2), there is a squeezing plate (29). The bottom of the squeezing plate (29) is fixedly connected with a push plate (30) that passes through the floating frame (1). The push plate (30) is located above the mounting frame (4). When the mounting frame (4) moves upward, it squeezes the push plate (30) to move into the floating frame (1). The surface of the floating frame (1) is provided with a water vent (31).

2. The semi-floating artificial fish nest moving device for river ecological restoration according to claim 1, characterized in that: The bottom of the fixed plate (15) is fixedly connected to two fixed frames (16), which are located below the water tank (10). The rotating shaft (17) is rotatably installed inside the fixed frame (16). The bottom of the fixed rod (3) is fixedly connected to an anchor block (8) by a rope (7). The anchor block (8) is used to limit the floating range of the floating frame (1).

3. The semi-floating artificial fish nest moving device for river ecological restoration according to claim 1, characterized in that: The protective cylinder (9) is composed of multiple arc-shaped guide plates (24). The adjacent guide plates (24) face different directions, the heads and tails of the multiple guide plates (24) are not connected, and there is an S-shaped gap between the multiple guide plates (24).

4. The semi-floating artificial fish nest moving device for river ecological restoration according to claim 3, characterized in that: The bottom of the floating frame (1) is elastically slidably connected with multiple baffles (25), and the multiple baffles (25) are respectively attached to the surfaces of the multiple guide plates (24) on the inner side. A triangular actuating plate (26) is fixedly connected to the surface of the baffle (25), and the actuating plate (26) is located above the mounting frame (4).

5. The semi-floating artificial fish nest moving device for river ecological restoration according to claim 2, characterized in that: The surface of the fixed frame (16) is fixedly connected with a horn-shaped drainage frame (32).

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