A nest structure adaptable to spawning of fish of multiple habits

Abstract

The application discloses a fish nest structure suitable for spawning of fish with multiple habits, which comprises a water surface buoyancy platform and an underwater matrix platform hung below the water surface buoyancy platform through multiple hoisting rods, a soft medium artificial fish nest is arranged on the water surface buoyancy platform, a hard medium artificial fish nest comprising a gravel layer is arranged on the top of the underwater matrix platform, a torrent simulation mechanism is arranged at one end of the underwater matrix platform and connected with the water surface buoyancy platform, and a photovoltaic power supply system comprising multiple photovoltaic panels is arranged on the top of the water surface buoyancy platform, the application drives water flow to flow through the gravel layer through the torrent simulation mechanism, so that a natural shallow water torrent gravel spawning ground suitable for spawning of fish with torrent habits is simulated, and the multiple photovoltaic panels are arranged above the soft medium artificial fish nest, so that the soft medium artificial fish nest is shaded and protected from avian enemies.

Description

Technical Field

[0001] This invention relates to the field of artificial fish nest technology, specifically a fish nest structure that can adapt to the spawning of fish with diverse habits. Background Technology

[0002] After the formation of the hydroelectric power station reservoir, the flowing water habitat transformed into a still water habitat, and a large number of gravel shoals were submerged in deep water. This resulted in a significant reduction in the natural spawning grounds of fast-flowing fish such as the Schizothorax subfamily and the Loach genus, greatly impacting their natural reproductive activities. Due to the slow water flow and greater water depth after the reservoir's formation, it is difficult to construct shallow, fast-flowing gravel spawning grounds suitable for the reproductive activities of these fish through methods such as bottom paving.

[0003] Furthermore, the formation of hydroelectric power station reservoirs reduces aquatic vegetation, damaging spawning grounds for fish that lay adhesive eggs. Existing soft-media artificial fish nests typically only involve attaching natural or artificial plants to floating structures for egg attachment, leaving the nests exposed. On one hand, prolonged direct sunlight can raise the water temperature near the nests, and temperature fluctuations may cause unstable egg attachment. On the other hand, exposed soft-media nests make parent fish and eggs more vulnerable to predation by birds of prey. Summary of the Invention

[0004] The technical solution of this invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. It mainly offers a fish nest structure that can adapt to the spawning of fish with diverse habits, thereby solving the technical problems mentioned in the background art, such as the difficulty in constructing shallow, fast-flowing gravel spawning grounds through substrate paving, the unstable and easily fluctuating temperature of soft-medium artificial fish nests, and the difficulty in defending against predators.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A fish nest structure adaptable to the spawning of fish with diverse habits includes a surface buoyancy platform and an underwater matrix platform suspended below the surface buoyancy platform by multiple lifting rods;

[0007] The surface buoyancy platform is equipped with a soft-medium artificial fish nest, and the top of the underwater matrix platform is equipped with a hard-medium artificial fish nest including a gravel layer.

[0008] The surface buoyancy platform is connected to a turbulence simulation mechanism located at one end of the underwater matrix platform. A photovoltaic power supply system including multiple photovoltaic panels is installed on the top of the surface buoyancy platform. The photovoltaic power supply system is electrically connected to the turbulence simulation mechanism, and the soft-medium artificial fish nest is located below the multiple photovoltaic panels.

[0009] The rapid flow simulation mechanism drives water flow through the gravel layer to simulate a natural shallow rapid gravel spawning ground and promotes the flow of water near the soft-medium artificial fish nest.

[0010] Furthermore, the hard-medium artificial fish nest also includes side panels surrounding the gravel layer, and the distance between the top of the side panels and the top of the underwater matrix platform is not less than the thickness of the gravel layer.

[0011] Furthermore, the gravel layer includes, from top to bottom, a fish egg attachment layer, a buffer layer, and a microbial attachment layer. The fish egg attachment layer is 3-5 cm thick and is made of granite gravel. The buffer layer is 3-4 cm thick and is made of limestone gravel. The microbial attachment layer is 3-4 cm thick and is made of porous volcanic rock gravel.

[0012] Furthermore, palm fiber bundles are suspended at the bottom of the underwater matrix platform, and the arrangement density of the palm fiber bundles is 5 bundles / ㎡.

[0013] Furthermore, the turbulence simulation mechanism includes a submersible thruster and a flow guide. The submersible thruster is connected to a surface buoyancy platform, and the lower end of the flow guide extends to both sides and is connected to the hoisting rods on both sides.

[0014] The upper end of the flow guide is provided with a flow guiding channel, and the submersible thruster is vertically installed at the top of the flow guide, with the blades of the submersible thruster located inside the flow guiding channel;

[0015] The lower end of the flow guide is provided with an annular channel communicating with the flow channel, and the front end of the flow guide near the underwater matrix platform is provided with an annular jet hole communicating with the annular channel.

[0016] Multiple arc-shaped guide plates are provided on both sides inside the flow channel, and the guide plates on both sides are symmetrical about the center line of the flow channel. The guide plates are inclined from top to bottom towards the side away from the center line of the flow channel.

[0017] The lower end of the flow guide is provided with a flow-increasing hole that runs through it from front to back. The annular channel and the annular jet hole are both connected end to end, and the annular channel and the annular jet hole are arranged around the flow-increasing hole.

[0018] Furthermore, the side wall of the flow guide is provided with filter holes that connect to the flow guide channel, and filter holes are provided above and below the blades of the submersible flow propeller, and the blades of the submersible flow propeller are located in the near-surface water area close to the water surface.

[0019] Furthermore, a positioning ring is provided on the same side of both the surface buoyancy platform and the underwater matrix platform, and a positioning pile with its lower end fixed is rotatably inserted into the positioning ring.

[0020] Multiple rudder shafts are vertically arranged inside the flow booster hole. Rudders are rotatably mounted on the rudder shafts. The rudders are connected to a steering drive mechanism. A control module is arranged on the water surface buoyancy platform. The steering drive mechanism is electrically connected to the photovoltaic power supply system through the control module.

[0021] The control module controls the steering drive mechanism to drive the rudder plate to rotate around the rudder plate axis according to the direction of sunlight. The water flow at the flow booster hole impacts the rudder plate, so that the surface buoyancy platform and the underwater matrix platform can turn around the positioning pile.

[0022] Furthermore, the steering drive mechanism includes a linkage rod and an underwater electric actuator electrically connected to the control module. The underwater electric actuator is disposed on the flow guide and located above the flow booster hole.

[0023] One end of the rudder plate is connected to the rudder plate shaft, and the top of the other end is provided with an operating lever. The linkage rod is provided with a strip-shaped hole along the length direction of the rudder plate. The operating lever is inserted into the strip-shaped hole and can rotate and slide within the strip-shaped hole.

[0024] The flow guide is provided with guide sleeves at both ends of the flow boosting hole for sliding insertion of the linkage rod, and the linkage rod is connected to the underwater electric push rod above through the transmission rod.

[0025] Furthermore, the water surface buoyancy platform includes a floating frame and a rectangular frame, and multiple floating frames are connected in sequence to form a floating frame that is connected end to end, with the edge of the rectangular frame set at the top of the floating frame;

[0026] The rectangular frame has multiple openings, the soft-medium artificial fish nests are placed at the openings of the rectangular frame, and multiple photovoltaic panels are mounted on the rectangular frame via supports.

[0027] Furthermore, a propeller frame is provided at one end of the rectangular frame, and the propeller frame extends to one end outside the floating frame and is connected to the submersible propeller.

[0028] The outer side of the floating frame is provided with several floating boxes for housing the remaining components of the photovoltaic power supply system. The floating boxes are connected to the rectangular frame through floating box connecting rods.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. This invention provides a rapid current simulation mechanism by setting up a rapid current simulation mechanism at one end of an underwater matrix platform and a photovoltaic power supply system with multiple photovoltaic panels on a buoyancy platform to power the rapid current simulation mechanism. The water flow generated by the rapid current simulation mechanism flows through the gravel layer of hard media artificial fish nests on the underwater matrix platform, simulating the habitat of a natural shallow rapid current gravel spawning ground, and providing a suitable habitat for rapid current fish to live and spawn.

[0031] 2. This invention provides a spawning site for fish that lay adhesive eggs by setting up soft-medium artificial fish nests on a buoyancy platform on the water surface. Multiple photovoltaic panels are set above the soft-medium artificial fish nests, which can defend against predators and provide shade for the soft-medium artificial fish nests, thus providing a safe, cool and temperature-stable habitat for the fish and fish eggs that spawn in the soft-medium artificial fish nests.

[0032] 3. The turbulent flow simulation mechanism of the present invention consists of a flow guide and a vertically arranged submersible thruster. The flow guide solves the problem that the water flow generated by the submersible thruster is difficult to cover a wide gravel layer, and the vertically arranged submersible thruster is close to the water surface, thereby playing an oxygenation role, so that the submersible thruster can also be used as an oxygenation device in the non-spawning season.

[0033] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 For the present invention Figure 1 Side view;

[0036] Figure 3 This is a schematic diagram of the floating frame structure of the present invention;

[0037] Figure 4 This is a schematic diagram of the turbulence simulation mechanism of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of the guide plate of the present invention;

[0039] Figure 6 This is a schematic diagram of the steering drive mechanism of the present invention;

[0040] Figure 7 This is a cross-sectional view of the gravel layer of the present invention.

[0041] Numbering on the map:

[0042] 1. Surface buoyancy platform; 2. Lifting boom; 3. Underwater matrix platform; 4. Soft media artificial fish nest; 5. Hard media artificial fish nest; 6. Turbulent flow simulation mechanism; 7. Photovoltaic panel; 8. Palm fiber bundle; 9. Flow guide channel; 10. Annular channel; 11. Annular jet hole; 12. Flow guide plate; 13. Flow booster hole; 14. Filter hole; 15. Positioning ring; 16. Positioning stake; 17. Rudder shaft; 18. Rudder; 19. Steering drive mechanism; 20. Control lever; 21. Strip hole; 22. Guide sleeve; 23. Transmission rod; 24. Hole; 25. Flow propeller frame; 26. Floating box; 27. Floating box connecting rod;

[0043] 101-Floating frame; 102-Rectangular frame;

[0044] 501 - Gravel layer; 502 - Side baffle;

[0045] 5011 - Fish egg attachment layer; 5012 - Buffer layer; 5013 - Microbial attachment layer;

[0046] 601. Submersible thruster; 602. Flow deflector;

[0047] 1901, linkage rod; 1902, underwater electric actuator. Detailed Implementation

[0048] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0050] Please refer to the appendix carefully. Figure 1-6 A fish nest structure that can be adapted to the spawning of fish with multiple habits includes a surface buoyancy platform 1 and an underwater matrix platform 3 suspended below the surface buoyancy platform 1 by multiple lifting rods 2;

[0051] A soft-medium artificial fish nest 4 is set on the surface buoyancy platform 1, and a hard-medium artificial fish nest 5 including a gravel layer 501 is set on the top of the underwater matrix platform 3.

[0052] The surface buoyancy platform 1 is connected to a turbulence simulation mechanism 6 located at one end of the underwater matrix platform 3. The turbulence simulation mechanism 6 is connected to the surface buoyancy platform 1 and / or the underwater matrix platform 3.

[0053] The top of the water surface buoyancy platform 1 is equipped with a photovoltaic power supply system including multiple photovoltaic panels 7. The photovoltaic power supply system is electrically connected to the turbulence simulation mechanism 6, and the soft medium artificial fish nest 4 is located below the multiple photovoltaic panels 7.

[0054] The rapid flow simulation mechanism 6 drives water flow through the gravel layer 501 to simulate a natural shallow rapid gravel spawning ground and promotes the flow of water near the soft-medium artificial fish nest 4.

[0055] Multiple photovoltaic panels 7 constitute a nest-protecting functional unit for providing shade and protection for the soft-medium artificial fish nest 4.

[0056] This invention provides power to the turbulent water simulation mechanism 6 by setting up a turbulent water simulation mechanism 6 between a surface buoyancy platform 1 and an underwater matrix platform 3, and by installing a photovoltaic power supply system with multiple photovoltaic panels 7 on the surface buoyancy platform 1. On the one hand, the water flow generated by the turbulent water simulation mechanism 6 flows through the gravel layer 501 on the underwater matrix platform 3, simulating the habitat of a natural shallow turbulent gravel spawning ground, providing a suitable habitat for turbulent fish to live and spawn. On the other hand, the soft-medium artificial fish nest 4 set on the surface buoyancy platform 1 provides a spawning site for fish such as crucian carp that lay adhesive eggs, and the multiple photovoltaic panels 7 set above the soft-medium artificial fish nest 4 can defend against predators and provide shade for the soft-medium artificial fish nest 4, thus providing a safe, cool, and temperature-stable habitat for the fish and their eggs that spawn in the soft-medium artificial fish nest 4.

[0057] In addition, the turbulent flow simulation mechanism 6 also promotes water flow near the soft-medium artificial fish nest 4, thereby accelerating the exchange between the water at the soft-medium artificial fish nest 4 and the surrounding water. This facilitates the supply of planktonic plants and nutrients to the soft-medium artificial fish nest 4, providing a good habitat for parent fish and fry. Furthermore, when the soft-medium artificial fish nest 4 uses natural plant materials, accelerating water flow effectively prevents toxic substances produced during plant decay from remaining in the soft-medium artificial fish nest 4 for extended periods. These beneficial effects are particularly suitable for aquatic environments with slow or even stagnant water flow, such as reservoirs with very small or no outflow.

[0058] The hard-medium artificial fish nest 5 also includes side baffles 502 surrounding the gravel layer 501, and the distance between the top of the side baffles 502 and the top of the underwater matrix platform 3 is not less than the thickness of the gravel layer 501.

[0059] The side baffle 502 is used to prevent the gravel in the gravel layer 501 from falling off the underwater substrate platform 3. The side baffle 502 is preferably a porous structure, such as iron mesh or bamboo strips arranged at intervals in the vertical direction, so as to facilitate the exchange of water between the hard medium artificial fish nest 5 and the surrounding water.

[0060] The gravel layer 501 includes, from top to bottom, a fish egg attachment layer 5011, a buffer layer 5012, and a microbial attachment layer 5013. The fish egg attachment layer 5011 is 3-5 cm thick and is made of granite gravel. The buffer layer 5012 is 3-4 cm thick and is made of limestone gravel. The microbial attachment layer 5013 is 3-4 cm thick and is made of porous volcanic rock gravel.

[0061] The bottom of the underwater matrix platform 3 is suspended with palm fiber bundles 8, and the arrangement density of the palm fiber bundles 8 is 5 bundles / ㎡.

[0062] The turbulence simulation mechanism 6 includes a submersible thruster 601 and a flow guide 602. The submersible thruster 601 is connected to the surface buoyancy platform 1, and the lower end of the flow guide 602 extends to both sides and is connected to the hoisting rods 2 on both sides.

[0063] The upper end of the flow guide 602 is provided with a flow guide channel 9, and the submersible thruster 601 is vertically installed at the top of the flow guide 602, with the blades of the submersible thruster 601 located inside the flow guide channel 9.

[0064] The lower end of the flow guide 602 is provided with an annular channel 10 that communicates with the flow guide channel 9, and the front end of the flow guide 602 near the underwater matrix platform 3 is provided with an annular jet hole 11 that communicates with the annular channel 10.

[0065] Multiple arc-shaped guide plates 12 are provided on both sides inside the flow channel 9, and the two guide plates 12 are symmetrical about the center line of the flow channel 9. The guide plates 12 are inclined from top to bottom towards the side away from the center line of the flow channel 9.

[0066] The lower end of the flow guide 602 is provided with a flow boosting hole 13 that runs through it from front to back. The annular channel 10 and the annular jet hole 11 are both connected end to end, and the annular channel 10 and the annular jet hole 11 are arranged around the flow boosting hole 13.

[0067] In addition, photovoltaic power supply systems typically include batteries and inverters. Taking an underwater substrate platform 3 with dimensions of 6m × 3m as an example, it uses five 550W monocrystalline silicon photovoltaic panels 7 with dimensions of 2279mm × 1134mm × 35mm, a 3000W inverter, five 12V gel batteries with a capacity of 200AH, a 1.5KW submersible thruster 601 with a flow rate of 450m² / h, and brackets for mounting and fixing the photovoltaic panels 7. The arrangement of the gel batteries and inverter on the surface buoyancy platform 1 prioritizes balancing the weight at both ends of the surface buoyancy platform 1. For example, the inverter and gel batteries are placed at one end of the surface buoyancy platform 1 relative to the submersible thruster 601 and the guide vane 602 to balance the weight at both ends of the surface buoyancy platform 1. In addition to supplying the submersible thruster 601, the excess electrical energy generated by the photovoltaic panel 7 is stored in the gel battery, so that the electrical energy stored in the gel battery can be used to power the submersible thruster 601 in the early morning, at night and on rainy days.

[0068] When the submersible jet thruster 601 is working, the blades of the submersible jet thruster 601 rotate, driving the water above the blades to flow below the blades, and pushing the water below the blades to flow along the guide channel 9 and the annular channel 10. When the water flows through multiple guide plates 12, it is guided to flow to both sides, so as to facilitate the water flow to fill the annular channel 10 and reduce the impact of the water flow on the inner wall of the annular channel 10. Under the action of water pressure, the water in the annular channel 10 is ejected from the front slit-shaped annular jet hole 11. The water flow ejected from the annular jet hole 11 forms a rectangular or elliptical water curtain with closed ends. Due to the high water velocity and low water pressure at the water curtain, the water inside and outside the water curtain will flow forward to the gravel layer 501 with the water curtain. The function of the flow booster hole 13 is to replenish the water curtain (using Bernoulli's principle, which can be referred to as bladeless fans and bladeless blowers).

[0069] Compared to the method where water flows directly through the gravel layer 501 driven by the submersible jet propeller 601, the guide 602 directs and "widens" the water flow driven by the submersible jet propeller 601. This not only allows the generated water flow to act on a wider gravel layer 501, but also prevents fish behind the submersible jet propeller 601 from colliding with the blades or external protective structures due to the strong suction generated by the submersible jet propeller 601. Furthermore, because the submersible jet propeller 601 is vertically positioned, it can be placed in a location near the water surface where fish rarely pass through. The submersible jet propeller 601 attracts water from all sides, avoiding the problem of a fast current in one direction, which makes it difficult for fish to escape the flow towards the submersible jet propeller 601.

[0070] A further optimization of the above embodiment is that the side wall of the flow guide 602 is provided with filter holes 14 that connect to the flow guide channel 9, and the blades of the submersible thruster 601 are provided with filter holes 14 above and below, and the blades of the submersible thruster 601 are located in the near-surface water area close to the water surface.

[0071] The function of the filter hole 14 is to allow water from outside the flow guide 602 to flow into the flow channel 9 where the blades of the submersible thruster 601 are located, and to filter impurities in the water, preventing impurities from entering the flow guide 602 and causing blockage. When the blades of the submersible thruster 601 rotate, the water above the blades is driven to flow downwards. During this process, as the blades approach the water surface, vortices are formed at the blades. The air above the vortex, under negative pressure, is carried by the water flow into the flow guide 602, thereby increasing the oxygen content of the water flowing towards the gravel layer 501. In addition, when the water flows in the flow channel 9, a negative pressure is formed inside the flow channel 9, which allows the flow channel 9 to draw in more water through the filter hole 14 below the blades of the submersible thruster 601.

[0072] In addition, during the non-spawning season, the height of the submersible propeller 601 can be adjusted so that the blades of the submersible propeller 601 are exposed above the water surface, increasing the agitation of the water surface and thus enhancing the oxygenation effect of the submersible propeller 601.

[0073] In summary, by setting up the flow guide 602 and optimizing the arrangement of the submersible flow booster 601, the adverse effects of the submersible flow booster 601 on the survival of fish can be reduced. More importantly, it not only solves the problem that the water flow generated by the submersible flow booster 601 is difficult to cover a wide gravel layer 501, but also significantly increases the oxygen content in the water near the hard-medium artificial fish nest 5, and also has a certain oxygenation effect on the water near the soft-medium artificial fish nest 4 above. This allows the submersible flow booster 601 to be used as an oxygenation device even in the non-spawning season, thereby improving the application value of the fish nest.

[0074] It should be further explained that the filter holes 14 can be cleaned manually on a regular basis, or a filter screen can be added to the filter holes 14 and the filter screen can be replaced regularly to keep the filter holes 14 clear. If the water quality in the area is poor and there are many impurities in the water, an impurity scraping component can be added to the filter holes 14. For example, a sleeve with multiple radially inclined blades on the side relative to the submersible propeller 601 can be fitted onto the filter holes 14. Water flows through the gaps between adjacent blades and the filter holes 14 into the guide channel 9. During this process, the water flow drives the blades to rotate the sleeve, and the inner side of the blades fits with the circular outer wall of the filter holes 14, thereby scraping away and cleaning the impurities attached to the filter holes 14. Alternatively, the filter holes 14 can be prevented from becoming clogged by using a waterproof motor to drive the scraping and cleaning component installed at the filter holes 14.

[0075] In addition, the flow guide 602 is essentially a shell structure with a flow guide channel 9, annular channel 10, flow boosting hole 13 and annular jet hole 11. The structure is not complicated and can be assembled and disassembled in sections. For example, it is assembled from an upper shell with a flow guide channel 9 and a flow guide plate 12 and a lower shell with annular channel 10, flow boosting hole 13 and annular jet hole 11. The lower shell is connected to the flow guide channel 9 of the upper shell through the opening of the annular channel 10 at the top.

[0076] Both the surface buoyancy platform 1 and the underwater matrix platform 3 are equipped with positioning rings 15 on the same side, and positioning piles 16 with fixed lower ends are rotatably inserted into the positioning rings 15.

[0077] Multiple rudder shafts 17 are vertically arranged inside the flow booster 13. Rudders 18 are rotatably arranged on the rudder shafts 17. The rudders 18 are connected to the steering drive mechanism 19. A control module is arranged on the water surface buoyancy platform 1. The steering drive mechanism 19 is electrically connected to the photovoltaic power supply system through the control module.

[0078] The control module controls the steering drive mechanism 19 according to the direction of sunlight to drive the rudder plate 18 to rotate around the rudder plate shaft 17. The water flow at the flow inlet 13 impacts the rudder plate 18, so that the surface buoyancy platform 1 and the underwater matrix platform 3 can turn around the positioning pile 16.

[0079] By driving the buoyancy platform 1 on the water surface to rotate in the direction of sunlight, not only can the photovoltaic panel 7 be oriented towards the direction of sunlight to improve the power generation efficiency of the photovoltaic panel 7, but also, when the photovoltaic panel 7 is oriented towards the direction of sunlight, the photovoltaic panel 7 can fully play its role in blocking the soft medium artificial fish nest 4 below from direct sunlight.

[0080] By placing the rudder plate 18 within the flow-increasing orifice 13 of the flow guide 602, the system achieves high integration and facilitates on-site deployment. Furthermore, since the rudder plate 18 is located within the flow-increasing orifice 13, it is only impacted by the water flow passing through the orifice 13, making it less susceptible to interference from surrounding water flow and thus facilitating steering control. Multiple rudder plates 18 can be installed, but the spacing between adjacent rudder plates 18 should not be too small, especially to meet the needs of fish passage for the hard-medium artificial fish nest 5. The positioning piles 16 are fixed by inserting their lower ends into the riverbed or by using lower counterweights such as concrete counterweight blocks.

[0081] In addition, both the surface buoyancy platform 1 and the underwater matrix platform 3 are positioned by fitting positioning rings 15 onto positioning piles 16 to limit their movement, which can prevent the surface buoyancy platform 1 and the underwater matrix platform 3 from swaying and tilting, thereby preventing gravel and fish eggs from detaching from the hard medium artificial fish nest 5.

[0082] The control module preferably uses a light intensity sensor to detect the light intensity in various directions and adjusts and corrects the angles of the surface buoyancy platform 1 and the underwater matrix platform 3 based on the light intensity detection data. Furthermore, since the direction of sunlight changes regularly, the control module can also adjust the angles of the surface buoyancy platform 1 and the underwater matrix platform 3 based on this regularity. Although this method has low hardware costs and requires no sensor maintenance or cleaning, the presence of water flow and air currents causing the surface buoyancy platform 1 and the underwater matrix platform 3 to rotate makes it difficult to maintain the set angles.

[0083] The steering drive mechanism 19 includes a linkage rod 1901 and an underwater electric actuator 1902 electrically connected to the control module. The underwater electric actuator 1902 is disposed on the flow guide 602 and located above the flow booster hole 13.

[0084] One end of the rudder plate 18 is connected to the rudder plate shaft 17, and the top of the other end is provided with an operating lever 20. The linkage rod 1901 is provided with a strip hole 21 along the length direction of the rudder plate 18. The operating lever 20 is inserted into the strip hole 21 and can rotate and slide within the strip hole 21.

[0085] The flow guide 602 is provided with guide sleeves 22 at both ends of the flow boosting hole 13 for the linkage rod 1901 to slide into. The linkage rod 1901 is connected to the underwater electric push rod 1902 above through the transmission rod 23.

[0086] The underwater electric actuator 1902 is electrically connected to the control module and photovoltaic power supply system on the surface buoyancy platform 1 via insulated wires. The underwater electric actuator 1902 is arranged laterally and drives the linkage rod 1901 to move left and right via the push-pull transmission rod 23. This causes the linkage rod 1901 to drive multiple rudder plates 18 to swing around their respective rudder plate axes 17, thereby adjusting the angle of the rudder plates 18 and controlling the steering of the surface buoyancy platform 1 and the underwater matrix platform 3. The slotted hole 21 and the operating rod 20 serve to movably connect the linkage rod 1901 to the rudder plates 18 and accommodate changes in the connection position between the rudder plates 18 and the linkage rod 1901 along the length of the rudder plates 18 during swinging.

[0087] The water surface buoyancy platform 1 includes a floating frame 101 and a rectangular frame 102. The floating frame 101 can be formed by connecting multiple floats sequentially through ropes or other connectors to create an end-to-end floating structure, or it can be a single, integral floating structure. The edges of the rectangular frame 102 are located at the top of the floating frame 101. The rectangular frame 102 is fixed to the multiple floating frames 101 by rope binding, fasteners, or other methods, depending on the specific circumstances.

[0088] The rectangular frame 102 has multiple openings 24, and the soft-medium artificial fish nest 4 is set at the openings 24 of the rectangular frame 102, so that the parent fish can lay eggs on the soft-medium artificial fish nest 4. Multiple photovoltaic panels 7 are set on the rectangular frame 102 by a bracket.

[0089] One end of the rectangular frame 102 is provided with a propeller frame 25. The propeller frame 25 extends to the outside of the floating frame 101 and is connected to the submersible propeller 601 to facilitate the disassembly, assembly and adjustment of the submersible propeller 601. The structural form of the propeller frame 25 and the connection method with the submersible propeller 601 are not limited here and can be flexibly selected according to the actual situation. However, preferably, the propeller frame 25 is detachably mounted on the rectangular frame 102 by fasteners such as bolts to facilitate the disassembly, assembly and adjustment of the submersible propeller 601.

[0090] Furthermore, the outer side of the floating frame 101 is provided with several floating boxes 26 for housing other components of the photovoltaic power supply system, such as gel batteries and inverters. The floating boxes 26 are connected to the rectangular frame 102 through floating box connecting rods 27. The floating box connecting rods 27 can be detachably installed on the rectangular frame 102 so as to adjust the position of multiple floating boxes 26 according to balance requirements.

[0091] The underwater substrate platform 3 only needs to be able to support the gravel layer 501 and be non-toxic. For example, it can be a platform made of multiple bamboo or pipes bundled together side by side, or it can be made of spliced ​​panels. The specific choice can be made according to actual needs. Similarly, the hoisting rod 2 only needs to be able to hoist the underwater substrate platform 3 and be non-toxic. The top of the hoisting rod 2 can be connected to the floating frame 101 or the rectangular frame 102. The specific choice can be made flexibly according to the size of the surface buoyancy platform 1 and the underwater substrate platform 3, the connection method between the hoisting rod 2 and the surface buoyancy platform 1 and the underwater substrate platform 3.

[0092] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A fish nest structure adaptable to spawning of a multi-habit fish, characterized by: The underwater substrate platform (3) is hoisted below the water surface buoyancy platform (1) through a plurality of hoisting rods (2); The water surface buoyancy platform (1) is provided with soft medium artificial fish nest (4), and the top of the underwater substrate platform (3) is provided with hard medium artificial fish nest (5) including gravel layer (501); The water surface buoyancy platform (1) is connected with the torrent simulation mechanism (6) at one end of the underwater substrate platform (3), the top of the water surface buoyancy platform (1) is provided with a photovoltaic power supply system including a plurality of photovoltaic panels (7), the photovoltaic power supply system is electrically connected with the torrent simulation mechanism (6), and the soft medium artificial fish nest (4) is located below the plurality of photovoltaic panels (7); The torrent simulation mechanism (6) simulates the natural shallow water torrent gravel spawning ground by driving the water flow through the gravel layer (501), and promotes the flow of water near the soft medium artificial fish nest (4); The torrent simulation mechanism (6) includes a submerged flow inducer (601) and a flow guide (602), the submerged flow inducer (601) is connected with the water surface buoyancy platform (1), and the lower end of the flow guide (602) extends to both sides and is connected with the hoisting rods (2) on both sides; The inside of the upper end of the flow guide (602) is provided with a flow guide channel (9), the submerged flow inducer (601) is vertically arranged at the top end of the flow guide (602), and the blades of the submerged flow inducer (601) are located in the flow guide channel (9); The inside of the lower end of the flow guide (602) is provided with an annular channel (10) in communication with the flow guide channel (9), and the front end of the flow guide (602) close to the underwater substrate platform (3) is provided with an annular jet hole (11) in communication with the annular channel (10); Both sides of the inside of the flow guide channel (9) are provided with a plurality of flow guide plates (12), and the flow guide plates (12) on both sides are symmetric about the center line of the flow guide channel (9), and the flow guide plates (12) are inclined from top to bottom to one side away from the center line of the flow guide channel (9); The lower end of the flow guide (602) is provided with a flow increasing hole (13) penetrating through the front and back thereof, the annular channel (10) and the annular jet hole (11) are of a head-to-tail structure, and the annular channel (10) and the annular jet hole (11) are arranged around the flow increasing hole (13); A plurality of rudder plate shafts (17) are vertically arranged in the flow increasing hole (13), a rudder plate (18) is rotatably arranged on the rudder plate shaft (17), a steering driving mechanism (19) is connected to the rudder plate (18), and a control module is arranged on the water surface buoyancy platform (1), and the steering driving mechanism (19) is electrically connected with the photovoltaic power supply system through the control module; The control module controls the steering driving mechanism (19) to drive the rudder plate (18) to rotate around the rudder plate shaft (17) according to the direction of sunlight; The steering driving mechanism (19) includes a linkage rod (1901) and an underwater electric push rod (1902) electrically connected with the control module, and the underwater electric push rod (1902) is arranged on the flow guide (602) and located above the flow increasing hole (13). One end of the rudder plate (18) is connected with the rudder plate shaft (17), and the top of the other end is provided with an operating rod (20), a strip-shaped hole (21) is arranged on the operating rod (1901) along the length direction of the rudder plate (18), and the operating rod (20) is inserted into the strip-shaped hole (21) and can rotate and slide in the strip-shaped hole (21); Both ends of the flow guide (602) located at the flow increasing hole (13) are provided with a guide sleeve (22) for sliding insertion of the linkage rod (1901), and the linkage rod (1901) is connected with the underwater electric push rod (1902) above through a transmission rod (23).

2. A fish nest structure adaptable to polyphenism of fish spawning according to claim 1, wherein: The hard medium artificial fish nest (5) further comprises a side baffle (502) surrounding the gravel layer (501), and the distance between the top of the side baffle (502) and the top of the underwater matrix platform (3) is not less than the thickness of the gravel layer (501).

3. The fish nest structure of claim 1, wherein: The gravel layer (501) comprises, from top to bottom, a fish egg attachment layer (5011), a buffer layer (5012) and a microorganism attachment layer (5013), the fish egg attachment layer (5011) has a thickness of 3-5 cm and is paved with granite gravel, the buffer layer (5012) has a thickness of 3-4 cm and is paved with limestone gravel, and the microorganism attachment layer (5013) has a thickness of 3-4 cm and is paved with porous volcanic gravel.

4. The fish nest structure of claim 1, wherein: The bottom of the underwater matrix platform (3) is provided with a bundle of palm fibers (8) in a hanging manner, and the arrangement density of the bundle of palm fibers (8) is 5 bundles / m2.

5. The fish nest structure of claim 1, wherein: The side wall of the flow guide (602) is provided with a filter hole (14) communicating with a flow guide channel (9), the upper and lower sides of the blade of the submarine flow inducer (601) are provided with filter holes (14), and the blade of the submarine flow inducer (601) is located in the near-surface water area close to the water surface.

6. The fish nest structure of claim 1, wherein: The same side of the water surface buoyancy platform (1) and the underwater matrix platform (3) is provided with a positioning ring (15), a positioning pile (16) with a fixed lower end is inserted into the positioning ring (15), and the positioning ring (15) is rotatably sleeved on the positioning pile (16); The water flow at the flow increasing hole (13) impacts the rudder plate (18) to make the water surface buoyancy platform (1) and the underwater matrix platform (3) turn around the positioning pile (16).

7. The fish nest structure of claim 1, wherein: The water surface buoyancy platform (1) comprises a floating frame (101) and a rectangular frame (102), and the edge of the rectangular frame (102) is arranged on the top of the floating frame (101). The rectangular frame (102) has a plurality of holes (24), the soft medium artificial fish nest (4) is arranged at the hole (24) of the rectangular frame (102), and the photovoltaic panel (7) is arranged on the rectangular frame (102) through a support.

8. A fish nest structure adaptable to polyphenetic fish spawning according to claim 7, characterized in that: One end of the rectangular frame (102) is provided with a flow inducer frame (25), and the flow inducer frame (25) is connected with the submarine flow inducer (601) at one end extending to the outside of the floating frame (101). The outer side of the floating frame (101) is provided with several floating boxes (26) for loading the remaining components of the photovoltaic power supply system, and the floating boxes (26) are connected with the rectangular frame (102) through floating box connecting rods (27).

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