Multifunctional stepped fish nest bank protection structure

Abstract

The invention discloses a multifunctional stepped fish nest revetment structure which comprises a shoreside surface layer, the surface of the shoreside surface layer is covered with a stepped revetment, the stepped revetment comprises a plurality of stepped platforms, and a slope is arranged between every two adjacent stepped platforms. At least two fish nest devices are arranged on the top surfaces of the plurality of step-shaped platforms, anchoring parts are arranged between the bottom structures of the fish nest devices and the shoreside surface layer, filling spaces are arranged in the two sides of each fish nest device, and a plurality of natural stones are filled in the filling spaces. According to the multifunctional stepped fish nest revetment structure, through the combination of the stepped revetment and the permeable material layer, the flood prevention performance is remarkably improved, the flow velocity of flood can be effectively reduced, the impact force of the flood can be reduced, and through the design of the fish nest device, diversified inhabitation spaces are provided for aquatic organisms.

Description

Technical Field

[0001] The invention relates to the technical field of bank protection, in particular to a multifunctional stepped fish nest bank protection structure. Background Art

[0002] With the acceleration of urbanization, damage to river ecosystems is becoming increasingly severe. Traditional riverbank protection projects often use hardened materials (such as concrete and stone masonry). While these materials offer strong flood control capabilities, they damage the natural ecosystem of the river, leading to loss of aquatic habitats and deteriorating water quality. In recent years, ecological revetment technology has gained increasing attention. By mimicking natural riverbank structures and incorporating flexible structures such as vegetation and geotechnical materials, these technologies offer both flood control and ecological restoration. However, existing ecological revetment technologies still struggle to balance flood control performance with habitat protection, making it difficult to simultaneously meet the demands of high-intensity flood control and diverse habitat needs.

[0003] Currently, common riverbank protection technologies include the following: 1. Traditional hard revetments, which utilize concrete or stone masonry structures and offer high flood control capabilities and durability, but lack ecological functionality; 2. Vegetated revetments, which enhance ecological functionality by planting vegetation along the riverbanks, but have weak flood control capabilities; 3. Composite revetments, which combine hard materials and vegetation to balance flood control and ecological functions, but are complex in structure, difficult to construct, and offer limited biological habitat functionality. In addition, there are some new ecological revetment technologies, such as fish nest revetments and permeable revetments, but in actual application, these technologies still suffer from issues such as insufficient flood control performance and limited biological habitat functionality.

[0004] The main drawback of existing technologies is their inability to simultaneously meet the demands of high-intensity flood control and diverse biological habitats. Traditional hard revetments have poor ecological functions, while vegetated revetments have weak flood control capabilities. Composite revetments are complex and offer limited biological habitats. Furthermore, existing fish nest revetment technologies often utilize a single structure, making them difficult to adapt to biological habitat requirements under varying water levels and resulting in limited flood control performance. Summary of the Invention

[0005] (1) Technical problems solved In view of the deficiencies in the prior art, the present invention provides a multifunctional stepped fish nest revetment structure, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multifunctional stepped fish nest revetment structure, comprising a shore surface layer, the surface of the shore surface layer is covered with a stepped revetment, and the stepped revetment includes a plurality of stepped platforms, and a slope is arranged between two adjacent stepped platforms, and the top surfaces of the plurality of stepped platforms are each provided with no less than two fish nest devices, and an anchoring component is arranged between the bottom structure of the fish nest device and the shore surface layer, and a filling space is provided inside both sides of the fish nest device, and a plurality of natural stones are filled in the filling space.

[0007] Preferably, the surface of the stepped revetment is paved with a layer of permeable material, and the anchoring component is specifically an anchoring cone rod, and one end of the anchoring cone rod can penetrate the bottom structure of the fish nest device, the stepped revetment and deeply inserted into the interior of the shore surface layer for anchoring and limiting.

[0008] Preferably, the fish nest device includes an artificial reef frame, and first combination grooves are provided on both sides of the top of the artificial reef frame, side frame plates are installed inside the two first combination grooves, and the bottom structure of the side frame plates is provided with mounting holes that can make way for the anchor cone rod. Auxiliary baffles are hingedly installed on both sides of the front end and the rear end of the artificial fish reef frame through pins. The auxiliary baffles can cover and block the combined gap between the artificial fish reef frame and the side frame plate, and a limiting component is provided between the side of the auxiliary baffle away from the artificial fish reef frame and the side corresponding to the side frame plate.

[0009] Preferably, a filter screen is fixedly nested in the artificial reef frame, in the two side frame plates, and in the four auxiliary baffles. First threaded holes are provided on the sides of the front and rear ends of the side frame plates. Receiving grooves are provided in the sides of the four auxiliary baffles away from the artificial reef frame. The limiting component includes a limiting sleeve, a pin, and a positioning screw. One end of the limiting sleeve is hinged to the inner wall of the opening of the receiving groove through the pin, and the limiting sleeve can be completely sheathed inside the receiving groove under the rotation support of the pin. The limiting sleeve is provided with a strip groove which can be fitted with the positioning screw, and when the limiting sleeve is in a spatial state perpendicular to the receiving groove, one end of the positioning screw can pass through the strip groove and be spirally locked with the first threaded hole.

[0010] Preferably, the side frame plate can be raised and lowered along the surface of the corresponding side of the artificial reef frame when the corresponding first combination groove is set in place, and the inner walls on both sides of the two first combination grooves are both curved structures.

[0011] Preferably, second threaded holes are provided on the side surfaces of both sides of the artificial reef frame, and second combination grooves are provided inside the two side frame plates. When the side frame plates are raised and lowered along the surfaces of the corresponding sides of the artificial reef frame, the second combination grooves can be aligned with the second threaded holes in the corresponding directions and form a limiting space, and the limiting space can limit the side frame plates with the screws.

[0012] Preferably, the tops of the two side frame plates are both configured as T-shaped structures, and the bottoms of the two side frame plates are both configured as L-shaped flange structures.

[0013] Preferably, the front and rear ends of the artificial reef frame are respectively fitted with a T-shaped internal threaded cylinder and a clamping cylinder, and a combination rope component is sleeved between the T-shaped internal threaded cylinder and the clamping cylinder, and the combination rope component includes a connecting rope body, and the two ends of the connecting rope body are respectively fixed with a limit stopper and an external threaded rod, and the limit stopper and one end of the connecting rope body are jointly fitted inside one end of the T-shaped internal threaded cylinder for fitting and limiting, and the other end of the external threaded rod and the connecting rope body can pass through the clamping cylinder and extend to the outside of the artificial reef frame, and the external threaded rod can be locked with the inner spiral of the other end of the limit stopper.

[0014] Preferably, the clamping cylinder comprises a fixed internal threaded cylinder, a clamping rod and a composite pressure regulating cylinder, the fixed internal threaded cylinder is fixedly sleeved in the rear end structure of the artificial reef frame, and the inner side of the fixed internal threaded cylinder is movably sleeved with the connecting rope body, and the number of the clamping rods provided is not less than two and they are arranged on one end of the fixed internal threaded cylinder along the circumference of the fixed internal threaded cylinder; The composite pressure regulating cylinder is provided with a tapered hole and an internal threaded hole respectively, and the tapered hole and the internal threaded hole are spatially communicated. The composite pressure regulating cylinder is threadedly connected to the fixed internal threaded cylinder through the internal threaded hole and can use the tapered hole to simultaneously apply pressure to at least two clamping rods, so that at least two clamping rods clamp and limit the connection rope body; The clamping rods are composed of a cross rod and a spring. The middle part of the cross rod passes through the inner wall of one end of the fixed internal threaded barrel, and the two ends of the spring are respectively fixed on the end surface of the cross rod located outside the fixed internal threaded barrel and the surface of the fixed internal threaded barrel.

[0015] Preferably, the length of the connecting rope body is greater than the length of the artificial reef frame, the connecting rope body and the external threaded rod are both made of plastic material that can float on the water, and the external threaded rod is set to a hollow structure and coated with a striking pigment coating on its surface.

[0016] Beneficial effects The present invention provides a multifunctional stepped fish nest revetment structure, which has the following beneficial effects: 1. The multifunctional stepped fish nest revetment structure significantly improves flood control performance through the combination of stepped revetment and permeable material layer, and can effectively slow down the flow rate of floods and reduce the impact of floods.

[0017] 2. The multifunctional stepped fish nest revetment structure provides a variety of habitats for aquatic organisms through the design of the fish nest device, thereby enhancing the ecological function of the river.

[0018] 3. The multifunctional stepped fish nest revetment structure ensures the stability of the fish nest device and extends its service life by anchoring multiple anchor cones deeply inserted into the shore surface layer.

[0019] 4. The multifunctional stepped fish nest revetment structure improves the adaptability and flexibility of the structure by designing a multi-structure combination of the fish nest device, and can be adjusted according to different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of the structure of the present invention; Figure 2 It is a top view schematic diagram of the structure of the present invention; Figure 3 This is an enlarged schematic diagram of the fish nest structure of the present invention; Figure 4 This is a schematic right side view of the artificial fish reef frame structure of the present invention; Figure 5 It is an enlarged schematic diagram of the side frame plate of the structure of the present invention; Figure 6 It is an enlarged schematic diagram of the structural limiting component of the present invention; Figure 7 The structure of the present invention Figure 3 A magnified schematic diagram of point A in the middle; Figure 8 It is a right side schematic diagram of the auxiliary baffle structure of the present invention; Figure 9 It is a partial cross-sectional schematic diagram of the side frame plate of the structure of the present invention; Figure 10 It is a cross-sectional schematic diagram of the clamping cylinder of the structure of the present invention; Figure 11 It is a cross-sectional schematic diagram of the T-shaped internally threaded barrel of the present invention; Figure 12 It is an enlarged schematic diagram of the structural combined rope component of the present invention; Figure 13 The structure of the present invention Figure 10 Enlarged schematic diagram of point B in the middle.

[0021] In the figure: 1. Shore surface layer; 2. Stepped revetment; 3. Fish nest device; 31. Artificial reef frame; 32. First combination groove; 33. Side frame plate; 34. Auxiliary baffle; 35. Limiting component; 351. Limiting sleeve; 352. Pin; 353. Positioning screw; 4. Anchoring cone rod; 5. Permeable material layer; 6. Natural stone; 7. First threaded hole; 8. Second combination groove; 9. Second threaded hole; 10. Clamping cylinder; 101. Fixed internal threaded cylinder; 102. Clamping rod; 103. Composite pressure regulating cylinder; 11. T-shaped internal threaded cylinder; 12. Combination rope component; 121. Connecting rope body; 122. Limit block; 123. Externally threaded rod; 13. Storage groove. DETAILED DESCRIPTION

[0022] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0023] See also Figure 1-5 A multifunctional stepped fish nest revetment structure comprises a shore surface layer 1, the surface of the shore surface layer 1 is covered with a stepped revetment 2, and the stepped revetment 2 comprises a plurality of stepped platforms, and a slope is arranged between two adjacent stepped platforms, and the top surfaces of the plurality of stepped platforms are each provided with at least two fish nest devices 3, and an anchoring component is arranged between the bottom structure of the fish nest device 3 and the shore surface layer 1, and a filling space is provided inside both sides of the fish nest device 3, and a plurality of natural stones 6 are filled and placed in the filling space, and the surface of the stepped revetment 2 is paved with a permeable material layer 5, and the anchoring component specifically adopts an anchoring cone rod 4, and one end of the anchoring cone rod 4 can penetrate the bottom structure of the fish nest device 3, the stepped revetment 2 and be deeply inserted into the interior of the shore surface layer 1 for anchoring and limiting.

[0024] In use: During flooding, water flows through the multiple slopes and multiple stepped platforms within the stepped revetment 2, passively slowing down the flow rate and thereby reducing the impact of the flood. At the same time, the permeable material layer 5 and the multiple fish nest devices 3 allow water to pass through, further reducing the water pressure. In the non-flooding period, the multiple fish nest devices 3 provide a habitat for aquatic organisms, and the multiple gaps formed by the multiple natural stones 6 provide shelter for fish, benthic organisms, etc.

[0025] See also Figure 3-7The fish nest device 3 includes an artificial fish reef frame 31, and first combination grooves 32 are provided on both sides of the top of the artificial fish reef frame 31. Side frame plates 33 are installed inside the two first combination grooves 32, and the bottom structure of the side frame plates 33 is provided with mounting holes that can accommodate the anchor cone rod 4. Auxiliary baffles 34 are hingedly installed on both sides of the front end and the rear end of the artificial fish reef frame 31 through pins. The auxiliary baffles 34 can cover and block the combined gap between the artificial fish reef frame 31 and the side frame plates 33, and a limiting component 35 is provided between the side of the auxiliary baffle 34 away from the artificial fish reef frame 31 and the side corresponding to the side frame plates 33; Filters are fixedly nested in the artificial reef frame 31, the two side frame plates 33 and the four auxiliary baffles 34. First threaded holes 7 are provided on the sides of the front and rear ends of the side frame plates 33. Receiving grooves 13 are provided in the sides of the four auxiliary baffles 34 away from the artificial reef frame 31. The limiting component 35 includes a limiting sleeve 351, a pin 352 and a positioning screw 353. One end of the limiting sleeve 351 is hinged to the inner wall of the opening of the receiving groove 13 through the pin 352, and the limiting sleeve 351 can be completely fitted into the interior of the receiving groove 13 under the rotational support of the pin 352. A strip groove that can be fitted with the positioning screw 353 is provided in the limiting sleeve 351, and when the limiting sleeve 351 is in a spatial state perpendicular to the receiving groove 13, one end of the positioning screw 353 can pass through the strip groove and be spirally locked with the first threaded hole 7.

[0026] During use: Taking into account the actual installation process, if the natural stones 6 are installed as a whole with the fish nest device 3 in a pre-filled manner, the overall device will be heavy and inconvenient to install. The component structure of the fish nest device 3 is broken down into parts. The placement position of the artificial fish reef frame 31 is first determined as a prerequisite. Natural stones 6 are placed on both sides of the artificial fish reef frame 31, and then the two side frame plates 33 are assembled with the artificial fish reef frame 31 through their respective corresponding first combination grooves 32. After the two side frame plates 33 are further moved and adjusted outside the artificial fish reef frame 31, the two side frame plates 33 cooperate with the artificial fish reef frame 31 to initially cover and block the natural stones 6 placed outside the two sides of the artificial fish reef frame 31; After the two side frame plates 33 are installed stably, first flip the limiting sleeves 351 inside the four auxiliary baffles 34 so that the limiting sleeves 351 are first moved out of the storage slots 13 and are in a vertical state with the corresponding auxiliary baffles 34. Next, flip the four auxiliary baffles 34, and then make the four auxiliary baffles 34 be connected to the front and rear end combinations of the two side frame plates 33 in groups of two. Subsequently, multiple positioning screws 353 are sequentially passed through the corresponding strip grooves inside the limiting sleeves 351 and then spirally locked with the corresponding first threaded holes 7. After repeating this many times, all-round shielding of the natural stones 6 is achieved. Subsequently, multiple anchoring cone rods 4 are used to sequentially pass through the mounting holes set in the bottom structure of the two side frame plates 33 and deeply inserted into the inside of the shore surface layer 1 for anchoring.

[0027] See also Figure 8-9 The side frame plates 33 can be raised and lowered along the surface of the corresponding side of the artificial reef frame 31 when the corresponding first combination grooves 32 are set in place, and the inner walls on both sides of the two first combination grooves 32 are both curved structures. The sides on both sides of the artificial reef frame 31 are provided with second threaded holes 9, and the interiors of the two side frame plates 33 are provided with second combination grooves 8. In the process of raising and lowering the side frame plates 33 along the surface of the corresponding side of the artificial reef frame 31, the second combination grooves 8 can be aligned with the second threaded holes 9 in the corresponding direction and form a limiting space. The limiting space can limit the side frame plates 33 with the screws. The tops of the two side frame plates 33 are both set to T-shaped structures, and the bottoms of the two side frame plates 33 are both L-shaped flange structures.

[0028] In use: Considering the integrated transportation requirements of the fish nest device 3 in reality, the two side frame plates 33 and the four auxiliary baffles 34 are further configured to be able to be accommodated and assembled with the artificial reef frame 31, as follows: Remove the positioning screws 353 between the four auxiliary baffles 34 and the two side frame plates 33, and then reset the multiple limiting components 35 to the corresponding storage slots 13. Next, push up the two side frame plates 33 and move them along the surfaces on both sides of the artificial reef frame 31 while the corresponding first combination slots 32 give way, until the bottom of the second combination slots 8 in the two side frame plates 33 are aligned with the corresponding second threaded holes 9 on the artificial reef frame 31. At this time, the two side frame plates 33 are relatively parallel to the artificial reef frame 31 and form a flat device with the artificial reef frame 31. Next, use existing screws to penetrate the second combination slots 8 and screw them together with the corresponding second threaded holes 9 to ensure the stability of the two side frame plates 33 after storage. After the two side frame plates 33 are stored, the four auxiliary baffles 34 are flipped over until the four auxiliary baffles 34 are respectively placed in pairs on the two side surfaces of the artificial fish reef frame 31. Then, the fish nest device 3 as a whole will be completely transformed into a flat device, which can be stacked and placed later to facilitate subsequent transportation and use.

[0029] See also Figure 10-13 The front and rear ends of the artificial reef frame 31 are respectively fitted with a T-shaped internal threaded cylinder 11 and a clamping cylinder 10, and a combination rope component 12 is sleeved between the T-shaped internal threaded cylinder 11 and the clamping cylinder 10. The combination rope component 12 includes a connecting rope body 121, and a limit stopper 122 and an external threaded rod 123 are fixed at both ends of the connecting rope body 121. The limit stopper 122 and one end of the connecting rope body 121 are jointly fitted inside one end of the T-shaped internal threaded cylinder 11 for fitting and limiting. The other end of the external threaded rod 123 and the connecting rope body 121 can pass through the clamping cylinder 10 and extend to the outside of the artificial reef frame 31. The external threaded rod 123 can be spirally locked with the inner side of the other end of the limit stopper 122. The clamping cylinder 10 includes a fixed internal threaded cylinder 101, a clamping rod 102 and a composite pressure regulating cylinder 103. The fixed internal threaded cylinder 101 is fixedly sleeved in the rear end structure of the artificial reef frame 31, and the inner side of the fixed internal threaded cylinder 101 is movably sleeved with the connecting rope body 121. The number of clamping rods 102 is not less than two and is arranged on one end of the fixed internal threaded cylinder 101 along the circumference of the fixed internal threaded cylinder 101. The interior of the composite pressure regulating cylinder 103 is respectively provided with a tapered hole and an internal threaded hole, and the tapered hole and the internal threaded hole are spatially connected. The composite pressure regulating cylinder 103 is threadedly connected to the fixed internal threaded cylinder 101 through an internal threaded hole and can use the tapered hole to simultaneously apply pressure to no less than two clamping rods 102, so that no less than two clamping rods 102 clamp and limit the connecting rope body 121. The clamping rods 102 are composed of a cross rod and a spring. The middle part of the cross rod passes through the inner wall of one end of the fixed internal threaded cylinder 101, and the two ends of the spring are respectively fixed on the end surface of the cross rod located outside the fixed internal threaded cylinder 101 and the surface of the fixed internal threaded cylinder 101.

[0030] During use: Considering that a single fish nest device 3 is subjected to high pressure when facing the impact of flood, a linkage device is formed by the T-shaped internal threaded cylinder 11, the combined rope component 12 and the clamping cylinder 10, so that two adjacent fish nest devices 3 can be used in a linked manner to improve the pressure resistance. The specific use is as follows: Twist the composite pressure-regulating cylinder 103 to temporarily detach the composite pressure-regulating cylinder 103 from the fixed internal threaded cylinder 101. At the same time, the cross-shaped rods in the multiple clamping rods 102 are all away from the connecting rope body 121 under the action of their corresponding spring return elastic force. Then, pull the connecting rope body 121 until the external threaded rod 123 can be spirally locked with the T-shaped internal threaded cylinder 11 provided in the adjacent fish nest device 3. Then, reset and lock the composite pressure-regulating cylinder 103, and use the tapered hole inside the composite pressure-regulating cylinder 103 to simultaneously apply pressure to the multiple cross-shaped rods, and then use the multiple cross-shaped rods to clamp and limit the adjusted connecting rope body 121. Subsequently, when a single fish nest device 3 faces a flood, due to the use of the linkage device, the multiple fish nest devices 3 can jointly resist the flood and ensure their own stability.

[0031] See also Figure 10-12 The length of the connecting rope body 121 is greater than the length of the artificial reef frame 31. The connecting rope body 121 and the external threaded rod 123 are both made of plastic material that can float on the water surface, and the external threaded rod 123 is set to a hollow structure and coated with a striking pigment coating on its surface.

[0032] In use: Considering the rescue problem of people falling into the water during floods, the fish nest device 3 provided in the present application can also play a certain role. For example, when a person falls into the water and is carried away by the flood, he or she can have a chance to grab the connecting rope body 121 between the two fish nest devices 3 to save himself or herself. Alternatively, while ensuring their own safety, in front of the person who falls into the water, the connecting rope body 121 inside the fish nest device 3 close to the shore is placed inside the fish nest device 3, and the rest is all thrown into the flow channel, giving the person who falls into the water a chance to pull the connecting rope body 121, providing favorable conditions for self-rescue.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional stepped fish nest revetment structure, comprising a shore surface layer (1), characterized in that: The surface of the shore surface layer (1) is covered with a stepped revetment (2), and the stepped revetment (2) includes a plurality of stepped platforms, and a slope is provided between two adjacent stepped platforms, and the top surfaces of the plurality of stepped platforms are provided with at least two fish nest devices (3), and an anchoring component is provided between the bottom structure of the fish nest device (3) and the shore surface layer (1), and a filling space is provided inside both sides of the fish nest device (3), and a plurality of natural stones (6) are filled and placed in the filling space.

2. The multifunctional stepped fish nest revetment structure according to claim 1, characterized in that: The surface of the stepped revetment (2) is paved with a water-permeable material layer (5), and the anchoring component specifically adopts an anchoring cone rod (4), and one end of the anchoring cone rod (4) can penetrate the bottom structure of the fish nest device (3), the stepped revetment (2), and be deeply inserted into the inner part of the shore surface layer (1) for anchoring and limiting.

3. The multifunctional stepped fish nest revetment structure according to claim 1, characterized in that: The fish nest device (3) includes an artificial fish reef frame (31), and first combination grooves (32) are provided on both sides of the top of the artificial fish reef frame (31), side frame plates (33) are installed inside the two first combination grooves (32), and the bottom structure of the side frame plates (33) is provided with a mounting hole capable of making way for the anchor cone rod (4) to be installed; Auxiliary baffles (34) are hingedly mounted on both sides of the front end and the rear end of the artificial fish reef frame (31) via pins. The auxiliary baffles (34) can cover and block the combined gap between the artificial fish reef frame (31) and the side frame plate (33). A limiting component (35) is provided between the side of the auxiliary baffle (34) away from the artificial fish reef frame (31) and the side corresponding to the side frame plate (33).

4. The multifunctional stepped fish nest revetment structure according to claim 3, characterized in that: Filters are fixedly nested in the artificial reef frame (31), in the two side frame plates (33), and in the four auxiliary baffles (34); first threaded holes (7) are provided on the sides of the front and rear ends of the side frame plates (33); and receiving grooves (13) are provided on the sides of the four auxiliary baffles (34) away from the artificial reef frame (31); the limiting component (35) includes a limiting sleeve (351), a pin (352), and a positioning screw (353); one end of the limiting sleeve (351) is hinged to the inner wall of the opening of the receiving groove (13) through the pin (352), and the limiting sleeve (351) can be completely sleeved inside the receiving groove (13) under the rotation support of the pin (352); The limiting sleeve (351) is provided with a strip groove capable of being fitted with the positioning screw (353), and when the limiting sleeve (351) is in a spatial state perpendicular to the receiving slot (13), one end of the positioning screw (353) can pass through the strip groove and be screw-locked with the first threaded hole (7).

5. The multifunctional stepped fish nest revetment structure according to claim 3, characterized in that: The side frame plate (33) can be raised and lowered along the surface of the corresponding side of the artificial reef frame (31) when the corresponding first combination groove (32) is set and positioned, and the inner walls on both sides of the two first combination grooves (32) are both arc-shaped structures.

6. The multifunctional stepped fish nest revetment structure according to claim 3, characterized in that: The sides of both sides of the artificial reef frame (31) are provided with second threaded holes (9), and the interiors of the two side frame plates (33) are provided with second combination grooves (8). When the side frame plates (33) are raised and lowered along the surfaces of the corresponding sides of the artificial reef frame (31), the second combination grooves (8) can be aligned with the second threaded holes (9) in the corresponding directions to form a limiting space, and the limiting space can limit the side frame plates (33) with the screws.

7. The multifunctional stepped fish nest revetment structure according to claim 3, characterized in that: The tops of the two side frame plates (33) are both configured as T-shaped structures, and the bottoms of the two side frame plates (33) are both configured as L-shaped flange structures.

8. The multifunctional stepped fish nest revetment structure according to claim 3, characterized in that: The front and rear ends of the artificial reef frame (31) are respectively fitted with a T-shaped internal threaded cylinder (11) and a clamping cylinder (10), and a combination rope component (12) is sleeved between the T-shaped internal threaded cylinder (11) and the clamping cylinder (10). The combination rope component (12) includes a connecting rope body (121), and two ends of the connecting rope body (121) are respectively fixed with a limit stopper (122) and an external threaded rod (123). The limit stopper (122) and one end of the connecting rope body (121) are together sleeved inside one end of the T-shaped internal threaded cylinder (11) for sleeve limiting. The other end of the external threaded rod (123) and the connecting rope body (121) can penetrate the clamping cylinder (10) and extend toward the outside of the artificial reef frame (31), and the external threaded rod (123) can be screw-locked with the inner side of the other end of the limit stopper (122).

9. The multifunctional stepped fish nest revetment structure according to claim 8, characterized in that: The clamping cylinder (10) comprises a fixed internal threaded cylinder (101), a clamping rod (102) and a composite pressure regulating cylinder (103); the fixed internal threaded cylinder (101) is fixedly sleeved in the rear end structure of the artificial reef frame (31), and the inner side of the fixed internal threaded cylinder (101) is movably sleeved with the connecting rope body (121); the number of the clamping rods (102) is not less than two and is arranged on one end of the fixed internal threaded cylinder (101) along the circumference of the fixed internal threaded cylinder (101); The composite pressure regulating cylinder (103) is provided with a tapered hole and an internal threaded hole, respectively, and the tapered hole and the internal threaded hole are spatially communicated. The composite pressure regulating cylinder (103) is threadedly connected to the fixed internal threaded cylinder (101) through the internal threaded hole and can use the tapered hole to synchronously apply pressure to at least two clamping rods (102), so that at least two clamping rods (102) clamp and limit the connection rope body (121); The clamping rod (102) is composed of a cross-shaped rod and a spring. The middle part of the cross-shaped rod passes through the inner wall of one end of the fixed internal threaded barrel (101) and is clamped. The two ends of the spring are respectively fixed to the end surface of the cross-shaped rod located outside the fixed internal threaded barrel (101) and the surface of the fixed internal threaded barrel (101).

10. The multifunctional stepped fish nest revetment structure according to claim 8, characterized in that: The length of the connecting rope body (121) is greater than the length of the artificial reef frame (31). The connecting rope body (121) and the externally threaded rod (123) are both made of a plastic material capable of floating on the water surface. The externally threaded rod (123) is configured as a hollow structure and is coated with a striking pigment coating on its surface.

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