Bionic non-smooth surface resistance and noise reduction deformation device
Through the variable arc-shaped and triangular groove module structure, combined with gear drive and porous polyurethane foam film, the problem of difficult to adapt to fluid changes in the fixed structure in the prior art is solved, and the effect of flexible adjustment of drag reduction and noise reduction is achieved. Enhanced expansion and shock absorption capabilities of the device.
Patent Information
- Application Number
- CN202420654703.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The existing bionic drag-reduction and noise reduction surface structure is fixed and it is difficult to adapt to changes in fluid parameters, and the best drag-reduction and noise reduction effect cannot be achieved.
The variable arc groove module and the triangular groove module are connected by hinges, combined with the gear drive system and porous rigid polyurethane foam film, to achieve flexible deformation and shock absorption of the structure and adapt to different fluid conditions.
It realizes flexible adjustment of drag reduction and noise reduction effects, enhances the expansion and shock absorption capabilities of the device, and adapts to the needs of different fields.
Smart Images
Figure CN222300304U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bionic non-smooth surface device, in particular to a variable bionic non-smooth surface drag reduction and noise reduction deformation device. Background Art
[0002] In the field of modern engineering, fluid dynamics problems are everywhere, from the design of aerospace vehicles to the construction of ships, to the aerodynamic optimization of cars and high-speed trains, all of which involve how to reduce drag and noise. Traditional drag reduction and noise reduction technologies usually focus on surface smoothing and reducing the drag of suspended objects, but these methods have certain limitations.
[0003] Organisms in nature show optimized adaptability to fluids, providing inspiration for researchers. Take fish scales, bird feathers, and dolphin skin as examples. They all have non-smooth surface structures that can effectively reduce resistance and noise. Such non-smooth surfaces will form vortex areas in water or air flows, thereby reducing collision wear, while improving the flow field on the blade surface, reducing low-pressure areas, and suppressing cavitation. On the other hand, when sound waves propagate in the air and encounter obstacles such as buildings, walls, and the ground, reflection, refraction, and diffraction will occur, resulting in the attenuation of sound waves. When sound waves propagate in the grooves of a non-smooth surface, the number of reflections on the surface will increase, consuming more energy, thereby improving the absorption of sound waves and achieving a noise reduction effect.
[0004] Although researchers have begun to study and draw on the bionic drag and noise reduction surface technology of organisms, the current bionic drag and noise reduction surfaces still face some challenges. In particular, the structures of these surfaces are often fixed and difficult to adapt to changes in fluid parameters, thus failing to achieve the best drag and noise reduction effect. Therefore, it is particularly important to develop a new type of bionic non-smooth surface drag and noise reduction deformation device to overcome the limitations of existing technologies. Utility Model Content
[0005] The utility model aims at the deficiencies of the existing drag reduction and noise reduction technology and provides a bionic non-smooth surface drag reduction and noise reduction deformation device.
[0006] The technical solution adopted by the utility model is as follows:
[0007] The utility model comprises an arc-shaped groove module and a triangular groove module, which are connected together by hinges; the arc-shaped groove module and the triangular groove module are arranged in a rectangular groove, and each groove has a pair of vertically symmetrical horizontal grooves at both ends, and a first side rack rod and a second side rack rod are connected to these horizontal grooves through a slider.
[0008] A gear is fixed in the middle of the side of the device, which is used to drive the first side rack rod and the second side rack rod to move horizontally; corresponding rectangular notches are provided on both sides of the rectangular groove, which are used to support the arc-shaped groove module and the triangular groove module to realize flexible deformation of the module.
[0009] Furthermore, the arc-shaped groove module includes, from left to right, a first rectangular arc-shaped movable plate, a curved connecting rod mechanism, and a second rectangular arc-shaped movable plate; the first rectangular arc-shaped movable plate and the second rectangular arc-shaped movable plate are respectively placed on the rectangular notch, and the curved connecting rod mechanism is connected to the two rectangular arc-shaped movable plates through a hinge, and can be extended and retracted with the translation of the rectangular arc-shaped movable plate.
[0010] Furthermore, the curved surface linkage mechanism is composed of a series of short rods and long rods, which sequentially include a first short rod, a second short rod, a first long rod, a second long rod, a third short rod, a fourth short rod, a fifth short rod, a sixth short rod and a pair of arc plates;
[0011] The first long rod and the second long rod are connected by a hinge, and their connection points together constitute the center of a circular arc surface. The first long rod and the second long rod are respectively connected to the first short rod, the second short rod and the first rectangular arc movable plate by hinges to form a rhombus structure, which constitutes the upper left part of the circular arc surface; the first long rod and the second long rod are also connected to the third short rod and the fourth short rod by hinges to form another rhombus structure, which constitutes the lower half of the circular arc surface; the first long rod and the second long rod are also connected to the fifth short rod, the sixth short rod and the second rectangular arc movable plate in a rhombus manner to constitute the upper right part of the circular arc surface.
[0012] Furthermore, the triangular groove module includes, from left to right, a first rectangular movable plate, a first rounded plate, a second rounded plate and a second rectangular movable plate; wherein, the first rectangular movable plate and the second rectangular movable plate are respectively placed on the rectangular notch to form a stable support; the first rounded plate and the second rounded plate are connected by a hinge to form a flexible V-shaped structure; the two groups of rounded plates are respectively connected to the rectangular movable plates on both sides by hinges, so that their angles can be adjusted in time with the movement of the rectangular movable plates.
[0013] Furthermore, the arc plate in the arc-shaped groove module and the rounded corner plate in the triangular groove module are embedded with porous rigid polyurethane foam films, which can be flexibly stretched as the device expands and contracts.
[0014] The utility model has the advantages of structural innovation, flexible adjustment, and good expansibility. The device adopts the deformation of variable arc groove modules and triangular groove modules to achieve the functions of drag reduction and noise reduction. The gear drive system inside the device can flexibly adjust the drag reduction and noise reduction effects of the device, and the application of porous rigid polyurethane foam film increases the overall shock absorption capacity. In addition, the device is expansible and can be extended outward by superimposing new rectangular grooves and side rack rods to connect multiple triangular groove modules and arc groove modules to meet the needs of different fields. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 is a schematic diagram of surface processing;
[0017] Figure 3 It is a schematic diagram of the arc-shaped groove module;
[0018] Figure 4 Schematic diagram of the triangular groove module. DETAILED DESCRIPTION
[0019] like Figure 1 As shown, the embodiment of the present application includes an arc-shaped groove module and a triangular groove module, and the modules are connected in sequence by hinges.
[0020] like Figure 2 As shown, after processing, the surface of the device forms a rectangular groove structure 12, 17. On the left and right sides of the groove, there is a pair of horizontal grooves 10, 18 symmetrically arranged in an upper and lower direction. A gear 15 is fixed in the middle of the side of the device to drive and adjust the movement of the device. On both sides of the groove, there is a pair of rectangular notches 1, 5 to support the arc groove module and the triangular groove module to realize the flexible deformation of the module.
[0021] A further technical solution is as follows: Figure 1 and Figure 2 As shown, the first side rack rod 14 is connected to the horizontal groove 10 on the left side of the groove through a slider, and the second side rack rod 16 is connected to the horizontal groove 18 on the right side of the groove through a slider, and both are meshed with the central gear 15.
[0022] The specific implementation scheme is that, driven by the gear 15, the first side rack bar 14 will slide left and right in the horizontal groove 10. At the same time, the second side rack bar 16 will slide left and right in the horizontal groove 18 in the opposite direction to the first side rack bar 14, thereby changing the spacing between the two side rack bars.
[0023] like Figure 1 and Figure 3As shown, the arc groove module is composed of the following components arranged from left to right: a first rectangular arc movable plate 2, a curved surface connecting rod mechanism 3, and a second rectangular arc movable plate 4. The curved surface connecting rod mechanism 3 includes, from left to right, a first short rod 3-1, a second short rod 3-2, a first long rod 3-3, a second long rod 3-4, a third short rod 3-5, a fourth short rod 3-6, a fifth short rod 3-7, and a sixth short rod 3-8.
[0024] A further technical solution is that the first rectangular arc movable plate 2 and the second rectangular arc movable plate 4 are respectively placed on the rectangular notch 1, the first side rack rod 14 is hingedly connected to the first rectangular arc movable plate 2, and the second side rack rod 16 is also hingedly connected to the second rectangular arc movable plate 4. The curved link mechanism 3 is connected to the first rectangular arc movable plate 2 and the second rectangular arc movable plate 4 through a hinge, so that it can be extended and retracted with the translation of the rectangular arc movable plate.
[0025] A further technical solution is that inside the curved surface linkage mechanism 3, the first long rod 3-3 and the second long rod 3-4 are connected by a hinge with the center of the arc surface as the connection point. The two long rods are connected to the first short rod 3-1 and the second short rod 3-2 by hinges, and at the same time, the first short rod 3-1 and the second short rod 3-2 are also hinged with the first rectangular arc movable plate 2, and are connected to the two long rods in a diamond-shaped structure, forming the upper left part of the arc surface. Similarly, the first long rod 3-3 and the second long rod 3-4 are respectively connected to the third short rod 3-5 and the fourth short rod 3-6 by hinges, and the third short rod 3-5 and the fourth short rod 3-6 are also hinged, and are connected to the two long rods in a diamond shape, forming the lower half of the arc surface. Similarly, the first long rod 3-3 and the second long rod 3-4 are respectively hinged with the fifth short rod 3-7 and the sixth short rod 3-8 by hinges, and the fifth short rod 3-7 and the sixth short rod 3-8 and the second rectangular arc movable plate 4 are connected by hinges, and are connected together into a diamond structure, forming the upper right part of the circular arc surface. In addition, the first curved plate 11 is connected with the first rectangular arc movable plate 2 and the third short rod 3-5 and the fourth short rod 3-6 by hinges. Similarly, the second curved plate 12 is also connected with the second rectangular arc movable plate 4, the third short rod 3-5, and the fourth short rod 3-6 in the form of a hinge. The porous rigid polyurethane foam film is fixed inside the first curved plate 11 and the second curved plate 12, and can be stretched with the expansion and contraction of the curved surface connecting rod mechanism 3. This film can be flexibly stretched with the expansion and contraction of the device due to its excellent elasticity. At the same time, the fine bubbles covered on the surface of the film increase the overall shock absorption capacity and achieve the purpose of noise reduction.
[0026] The specific implementation scheme is that, driven by the motor, when the gear 15 rotates clockwise, the first side rack rod 14 is driven to slide to the left in the horizontal groove 10, and the second side rack rod 16 is driven to slide to the right in the horizontal groove 18, thereby driving the first rectangular arc movable plate 2 and the second rectangular arc movable plate 4 to translate along the two ends of the rectangular notch 1, so that the curved surface connecting rod mechanism 3 is stretched to both ends, thereby increasing the radius of the circular arc surface. Conversely, when the gear 15 rotates counterclockwise, the first rectangular arc movable plate 2 and the second rectangular arc movable plate 4 will translate toward the groove direction of the rectangular notch 1, so that the radius of the circular arc surface is reduced, thereby realizing the change of the structural morphology of the circular arc groove.
[0027] like Figure 1 and Figure 4 As shown, the triangular groove module includes, from left to right, a first rectangular movable plate 6, a first rounded plate 7, a second rounded plate 8, and a second rectangular movable plate 9.
[0028] A further technical solution is that the first rectangular movable plate 6 and the second rectangular movable plate 9 are respectively placed on the rectangular notch 5 to form a stable support, the first side rack rod 14 is connected to the first rounded plate 7 by a hinge, and at the same time, the second side rack rod 16 is also hinged to the second rounded plate 8. The first rounded plate 7 is connected to the second rounded plate 8 in a V-shaped hinge, and the two sides are respectively connected to the first rectangular movable plate 6 and the second rectangular movable plate 9 by hinges, so that their angles can be adjusted in time with the movement of the rectangular movable plates. The porous rigid polyurethane foam film is fixed inside the first rounded plate 7 and the second rounded plate 8, and can be stretched as the angle between the two rounded plates changes.
[0029] The specific implementation scheme is that, driven by the motor, when the gear 15 rotates clockwise, the first side rack rod 14 will slide to the left in the horizontal groove 10, and the second side rack rod 16 will slide to the right in the horizontal groove 18, driving the first fillet plate 7 and the second fillet plate 8 to translate along the two sides of the groove, so that the angle between the two fillet plates becomes larger. Conversely, when the gear 15 rotates counterclockwise, the first fillet plate 7 and the second fillet plate 8 will translate toward the groove, so that the angle between the two fillet plates becomes smaller, thereby realizing the change of the triangular groove structure.
[0030] In this embodiment, the arc groove module and the triangular groove module are connected by the side rack rod, and the rectangular arc movable plate and the rectangular movable plate can be moved with the translation of the side rack rod, thereby changing the size of the groove. At the same time, the device can be expanded outward by adding new rectangular grooves and extending the side rack rod, and then multiple triangular groove modules and arc groove modules can be superimposed, so as to adapt to a wider range of application needs.
[0031] The contents in the above embodiments of this specification are only used to illustrate the specific implementation of the utility model, and do not mean that the protection scope of the utility model is limited to these examples. In fact, the protection scope of the utility model covers any equivalent technical solutions that can be thought of by any technician in this field after understanding the basic concept of the utility model.
Claims
1. A bionic non-smooth surface drag reduction and noise reduction deformation device, characterized in that: It includes an arc groove module and a triangular groove module, which are connected together by hinges; The arc groove module and the triangular groove module are arranged in the rectangular groove, and each groove has a pair of vertically symmetrical horizontal grooves at both ends, and the first side rack rod and the second side rack rod are connected to these horizontal grooves through a slider; A gear is fixed in the middle of the side of the device, which is used to drive the first side rack rod and the second side rack rod to move horizontally; corresponding rectangular notches are provided on both sides of the rectangular groove, which are used to support the arc-shaped groove module and the triangular groove module to realize flexible deformation of the module.
2. The bionic non-smooth surface drag reduction and noise reduction deformation device according to claim 1, characterized in that: The arc-shaped groove module includes, from left to right, a first rectangular arc-shaped movable plate, a curved connecting rod mechanism, and a second rectangular arc-shaped movable plate; the first rectangular arc-shaped movable plate and the second rectangular arc-shaped movable plate are respectively placed on the rectangular notch, and the curved connecting rod mechanism is connected to the two rectangular arc-shaped movable plates through a hinge, and can be extended and retracted with the translation of the rectangular arc-shaped movable plates.
3. The bionic non-smooth surface drag reduction and noise reduction deformation device according to claim 2, characterized in that: The curved surface connecting rod mechanism is composed of a series of short rods and long rods, which include a first short rod, a second short rod, a first long rod, a second long rod, a third short rod, a fourth short rod, a fifth short rod, a sixth short rod and a pair of arc plates in sequence; The first long rod and the second long rod are connected by a hinge, and their connection points together constitute the center of a circular arc surface. The first long rod and the second long rod are respectively connected to the first short rod, the second short rod and the first rectangular arc movable plate by hinges to form a rhombus structure, which constitutes the upper left part of the circular arc surface; the first long rod and the second long rod are also connected to the third short rod and the fourth short rod by hinges to form another rhombus structure, which constitutes the lower half of the circular arc surface; the first long rod and the second long rod are also connected to the fifth short rod, the sixth short rod and the second rectangular arc movable plate in a rhombus manner to constitute the upper right part of the circular arc surface.
4. The bionic non-smooth surface drag reduction and noise reduction deformation device according to claim 1, characterized in that: The triangular groove module includes, from left to right, a first rectangular movable plate, a first rounded corner plate, a second rounded corner plate and a second rectangular movable plate; wherein, the first rectangular movable plate and the second rectangular movable plate are respectively placed on the rectangular notch to form a stable support; the first rounded corner plate and the second rounded corner plate are connected by a hinge to form a flexible V-shaped structure; the two groups of rounded corner plates are respectively connected to the rectangular movable plates on both sides by hinges, so that their angles can be adjusted in time with the movement of the rectangular movable plates.
5. The bionic non-smooth surface drag reduction and noise reduction deformation device according to claim 1, characterized in that: The arc plate in the arc-shaped groove module and the rounded corner plate in the triangular groove module are embedded with porous rigid polyurethane foam films, which can be flexibly stretched as the device expands and contracts.