A flood discharge atomization wind and rain protection structure with negative Poisson's ratio characteristics

Abstract

The present invention discloses a flood discharge atomization wind and rain shielding structure with negative Poisson's ratio characteristics. The flood discharge atomization wind and rain shielding structure is composed of a plurality of unit cells distributed in a rectangular array, and two adjacent unit cells are closely connected; each unit cell includes a central support structure, a frame and a connection structure. The frame covers the outside of the central support structure, and the frame and the central support structure are connected by the connection structure. When the central support structure is compressed, it pulls the frame to move closer to the central support structure through the connection structure. The flood discharge atomization wind and rain shielding structure of the present invention has negative Poisson's ratio characteristics. When it is strongly washed by atomized wind or rain, its pore structure shows a contracted state, so as to achieve the purpose of wind and rain shielding.

Description

Technical Field

[0001] The present invention relates to the technical field of flood discharge atomization protection, and particularly to a flood discharge atomization wind and rain protection structure with negative Poisson's ratio characteristics. Background Art

[0002] During the flood discharge process, due to the violent mixing of water and gas, intense atomized wind and atomized rainfall will be generated near the water tongue falling point in the downstream. This unnatural strong wind and rainfall will affect the stability of the river valley slope, downstream traffic and the corresponding ecological environment.

[0003] In the prior art, the protection structures commonly used for flood discharge atomization mostly protect important structures by building concrete protection walls or glass corridors. Such structures are heavy in weight, cover a large area, have high requirements for terrain and geological foundations, and are not economical and environmentally friendly enough. Summary of the Invention

[0004] The main object of the present invention is to propose a flood discharge atomization wind and rain protection structure with negative Poisson's ratio characteristics, aiming to solve the problems that the existing protection structures for flood discharge atomization made of concrete or glass are heavy in structure, cover a large area, have high requirements for terrain and geological foundations, and are not economical and environmentally friendly enough.

[0005] To solve the above problems, the present invention proposes a flood discharge atomization wind and rain protection structure with negative Poisson's ratio characteristics. The flood discharge atomization wind and rain protection structure is composed of a plurality of cells distributed in a rectangular array, and two adjacent cells are closely connected;

[0006] Each cell includes a central support structure, a frame and a connection structure. The frame covers the outside of the central support structure, and the frame and the central support structure are connected by the connection structure. When the central support structure is compressed, it pulls the frame to move closer to the central support structure through the connection structure.

[0007] In one embodiment, the central support structure is located at the center of the frame;

[0008] The central support structure includes a central hexagonal support structure, a surrounding hexagonal support structure surrounding the central hexagonal support structure, and a rhombic support structure surrounding the surrounding hexagonal support structure. Two adjacent rhombic support structures are not connected;

[0009] The surrounding hexagonal support structure surrounding the central hexagonal support structure and the rhombic support structure surrounding the surrounding hexagonal support structure are both centrally symmetrically distributed with the central hexagonal support structure as the center.

[0010] In one embodiment, the frame is square.

[0011] In one embodiment, the connection structure includes a plurality of M-shaped connection structures one and a plurality of linear connection structures two. The plurality of connection structures one and connection structures two surround the periphery of the central support structure, and one connection structure two is provided between two adjacent connection structures one.

[0012] One end of the connection structure is connected to the diamond support structure, and the other end is connected to the frame.

[0013] In one embodiment, one side of the connection structure one is connected to two adjacent diamond support structures, and the other side forms one or two connection points with the frame.

[0014] In one embodiment, the connection structure one located in the middle of the square edge where the frame is located forms two connection points with the frame, and the connection structure one located at the square right angle where the frame is located forms one connection point with the frame.

[0015] Beneficial effects:

[0016] 1. The flood discharge atomization wind and rain protection structure of the present invention has a negative Poisson's ratio characteristic. When it is subjected to strong atomized wind or rain scouring, its pore structure shows a contraction state, so as to achieve the purpose of wind and rain protection.

[0017] 2. The flood discharge atomization wind and rain protection structure of the present invention is generated by 3D printing using a high molecular flexible material, has good deformation coordination ability, can adapt to different shapes of the protected object, and has low requirements for terrain and geological foundation.

[0018] 3. The flood discharge atomization wind and rain protection structure of the present invention has a small thickness, can closely adhere to the parts that need wind and rain protection in nature such as river valley slopes, occupies a small area, and at the same time has a fluffy and porous structure, is light in weight, and is made of a high molecular flexible material, which is economical and environmentally friendly. Brief description of the drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a schematic diagram of a flood discharge atomization wind and rain protection structure with a negative Poisson's ratio characteristic of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of a single unit cell;

[0022] Figure 3 is a force diagram of a single unit cell.

[0023] The description of the reference numerals in the drawings is as follows:

[0024] 1. Frame

[0025] 2. Central support structure; 21. Central hexagonal support structure; 22. Surrounding hexagonal support structure; 23. Rhombic support structure

[0026] 3. First connection structure; 4. Second connection structure; 5. Multi-cell structure Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then such directional indications will also change accordingly.

[0029] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0031] The present invention provides a flood-discharging atomization wind and rain protection structure with a negative Poisson's ratio characteristic. This flood-discharging atomization wind and rain protection structure with a negative Poisson's ratio characteristic has a negative Poisson's ratio characteristic. When it is subjected to strong atomized wind or rain erosion, its pore structure shows a contraction state, so as to achieve the purpose of wind and rain protection.

[0032] Specifically, in an embodiment of the invention, as Figure 1 shown, the flood-discharging atomization wind and rain protection structure is composed of a plurality of unit cells distributed in a rectangular array. Two adjacent unit cells are closely connected. The plurality of unit cells distributed in a rectangular array form a multi-unit cell structure 5. The multi-unit cell structure 5 is generated by 3D printing using a polymer flexible material, such as thermoplastic polyurethane. With such a design, each unit cell in the multi-unit cell structure 5 is integrally designed and printed, making the manufacturing speed of the flood-discharging atomization wind and rain protection structure fast, the efficiency high, and the production cost low. Moreover, using a polymer flexible material for production is economical and environmentally friendly.

[0033] In addition, after the flood-discharging atomization wind and rain protection structure is generated by 3D printing using a polymer flexible material, it is soft in texture and has good deformation coordination ability. It can adapt to different shapes of the protected object and has low requirements for terrain and geological foundation. When in use, the multi-unit cell structure 5 is directly fixed by closely attaching it to the parts in nature that need wind and rain protection, such as the river valley slope. The installation is simple and convenient.

[0034] In this embodiment, as Figure 2 shown, a single unit cell includes a central support structure 2, a frame 1, and a connection structure. The frame 1 covers the outside of the central support structure 2. The frame 1 is used to increase the structural stiffness of a single unit cell and is also convenient for connecting with other single unit cells. The frame 1 and the central support structure 2 are connected by the connection structure. When the central support structure 2 is subjected to strong atomized wind or rain erosion, it pulls the frame 1 to move closer to the central support structure 2 through the connection structure, and then the distance between the frame 1 and the central support structure 2 is reduced to 0, realizing wind and rain protection and showing a negative Poisson's ratio effect.

[0035] It should be noted that the volume of a single unit cell is very small. A single unit cell shows a negative Poisson's ratio effect at the microstructural level. Correspondingly, the multi-unit cell structure 5 obtained by combining multiple unit cells will also have a negative Poisson's ratio effect, and the multi-unit cell structure 5 will amplify this negative Poisson's ratio effect, so as to better achieve that when it is subjected to strong atomized wind or rain erosion, its pore structure shows a contraction state, so as to achieve the purpose of wind and rain protection.

[0036] Preferably, in this embodiment, the central support structure 2, the frame 1 and the connection structure are integrally printed and formed with a polymer flexible material, and the thickness is small. Therefore, the obtained flood-discharging atomizing wind and rain blocking structure occupies a small area. In addition, the frame 1 and the central support structure 2 are connected by the connection structure, making the flood-discharging atomizing wind and rain blocking structure fluffy and porous, and light in weight.

[0037] Preferably, as Figure 2 shown, the central support structure 2 is located at the center of the frame 1; the central support structure 2 includes a central hexagonal support structure 21, a surrounding hexagonal support structure 22 surrounding the central hexagonal support structure 21, and a rhombic support structure 23 surrounding the surrounding hexagonal support structure 22. Among them, two adjacent rhombic support structures 23 are not connected. Such a design can make the central support structure 2 a strong internal support structure, ensuring the smooth realization of the negative Poisson's ratio effect of a single unit cell; the surrounding hexagonal support structure 22 surrounding the central hexagonal support structure 21 and the rhombic support structure 23 surrounding the surrounding hexagonal support structure 22 are both centrosymmetrically distributed with the central hexagonal support structure 21 as the center. Such a design ensures that the deformation of the central support structure 2 under external force is uniform and symmetric. Correspondingly, Figure 2 the tension received by the connection structure surrounding the central support structure 2 can be made uniform. When the central support structure 2 is subsequently washed by strong atomizing wind or rain, it can pull the various parts of the frame 1 to move synchronously towards the central support structure 2 through the connection structure, and then the distances between various parts of the frame 1 and the central support structure 2 are all reduced to 0. The shrinking pace of the frame 1 is uniform and has good consistency, and there will be no situation where the distance from a certain part of the frame 1 to the central support structure 2 is not reduced to 0, effectively achieving the purpose of wind and rain blocking. In addition, the symmetrical setting of the central support structure 2 also reduces the complexity of 3D printing, which helps to reduce the printing and manufacturing cost.

[0038] In this embodiment, as Figure 1 and Figure 2 shown, preferably, the frame 1 is square. Such a design can make the structure of a single unit cell the simplest under the condition of having the characteristics of negative Poisson's ratio.

[0039] In this embodiment, as Figure 2 shown, the connection structure includes a plurality of M-shaped connection structures 3 and a plurality of one-shaped connection structures 4. The plurality of connection structures 3 and connection structures 4 surround the periphery of the central support structure 2, and there is one connection structure 4 between two adjacent connection structures 3; one end of the connection structure 3 is connected to the rhombic support structure 23, and the other end is connected to the frame 1. Specifically, as Figure 2As shown in the figure, one side of the first connection structure 3 is connected to two adjacent diamond support structures 23, and the other side forms one or two connection points with the frame 1. For example, the first connection structure 3 located at the middle of the edge of the square where the frame 1 is located forms two connection points with the frame 1, and the first connection structure 3 located at the right angle of the square where the frame 1 is located forms one connection point with the frame 1. With such a design, the deformation of the entire connection structure (including the connection points) will exhibit asymmetry. On the one hand, when an external force acts on a single unit cell, the central support structure 2 is deformed, and the deformation is transmitted to the external frame 1 through the connection structure. Since the transmission of the connection structure is not uniform but has a certain directionality, the single unit cell as a whole exhibits a negative Poisson's ratio effect. On the other hand, when the central support structure 2 pulls the connection structure to reduce the distance between the frame 1 and the central support structure 2, the asymmetric connection structure gives a reaction force to the central support structure 2, and the central support structure 2 rotates under the action of the reaction force. As Figure 3 shown, the rotating central support structure 2 can pull the connection structures surrounding the central support structure 2 more evenly, making the tensile force received by the connection structures surrounding the central support structure 2 more uniform, further ensuring that the distances between all parts of the frame 1 and the central support structure 2 are all reduced to 0. The frame 1 shrinks evenly and consistently, completely preventing the phenomenon that the distance from a certain part of the frame 1 to the central support structure 2 is not reduced to 0, effectively achieving the purpose of wind and rain prevention.

[0040] In this embodiment, as Figure 3 shown, the rotating arrow represents one of the rotation directions of the central support structure 2 when it is subjected to an external force. In this rotation direction, a single unit cell shows contraction. The arrow inside the frame 1 represents the tensile force direction of the connection structure pulling the frame 1, and the arrow outside the frame 1 represents the direction of the external force applied to the single unit cell. Conversely, if the rotation direction of the central support structure 2 changes, the single unit cell shows expansion.

[0041] The flood discharge atomization wind and rain prevention structure with negative Poisson's ratio characteristics of the present invention utilizes the deformation characteristics of the central hexagonal support structure 21, the surrounding hexagonal support structure 22, the diamond support structure 23, the M-shaped first connection structure 3, and the straight-shaped second connection structure 4. Through a specific connection method, a single unit cell has a negative Poisson's ratio effect, can exhibit the effect of pore contraction under an external pressure, achieves the purpose of wind and rain prevention, and the wind and rain prevention structure has good toughness and can withstand large deformations.

[0042] The above are only the preferred embodiments of the present invention, and do not thereby limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present invention.

Claims

1. A flood-discharging atomization wind and rain protection structure with negative Poisson's ratio characteristics, characterized in that, The flood discharge atomization wind and rain protection structure is composed of multiple cells distributed in a rectangular array, and two adjacent cells are closely connected; Each cell includes a central support structure, a frame and a connection structure. The frame covers the outside of the central support structure. The frame and the central support structure are connected by the connection structure. When the central support structure is compressed, it pulls the frame to move closer to the central support structure through the connection structure; The central support structure is located at the center of the frame; The central support structure includes a central hexagonal support structure, a surrounding hexagonal support structure surrounding the central hexagonal support structure, and a rhombic support structure surrounding the surrounding hexagonal support structure. Two adjacent rhombic support structures are not connected; The surrounding hexagonal support structure surrounding the central hexagonal support structure and the rhombic support structure surrounding the surrounding hexagonal support structure are both centrosymmetrically distributed with the central hexagonal support structure as the center.

2. The flood discharge atomization wind and rain protection structure with negative Poisson's ratio characteristics according to claim 1, characterized in that, The frame is square.

3. The flood-discharging atomization wind and rain protection structure with a negative Poisson's ratio characteristic according to claim 2, characterized in that, The connection structure includes multiple M-shaped connection structures one and multiple linear connection structures two. The multiple connection structures one and connection structures two surround the outside of the central support structure, and one connection structure two is provided between two adjacent connection structures one; One end of the connection structure is connected to the rhombic support structure, and the other end is connected to the frame.

4. The flood-discharging atomization wind and rain protection structure with negative Poisson's ratio characteristics according to claim 3, characterized in that One side of the connection structure one is connected to two adjacent rhombic support structures, and the other side forms one or two connection points with the frame.

5. The flood-discharging atomization wind and rain protection structure with negative Poisson's ratio characteristics according to claim 3, characterized in that The connection structure one located in the middle of the edge of the square where the frame is located forms two connection points with the frame, and the connection structure one located at the right angle of the square where the frame is located forms one connection point with the frame.

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