A self-generating multi-dimensional energy consumption vibration isolation device

Abstract

The application discloses a self-power-generation multi-dimensional energy consumption vibration isolation device and relates to the field of energy consumption and vibration reduction. The device comprises a bottom plate, a vertical energy consumption component and a horizontal energy consumption component. The vertical energy consumption component comprises a folded paper metamaterial outer cylinder, the folded paper metamaterial outer cylinder is internally provided with a magneto-rheological fluid, the upper end of the folded paper metamaterial outer cylinder is fixedly connected with a rubber top plate, the top end of the rubber top plate is fixedly connected with a rubber ring, the center of the rubber top plate is provided with a first hole, a screw nut mechanism is vertically inserted into the center of the folded paper metamaterial outer cylinder, the lower end of the screw is inserted into the bottom plate, and the screw is fixedly connected with a blade in the circumferential direction. The horizontal energy consumption component comprises a plurality of permanent magnets which are uniformly distributed around the bottom plate, the bottom plate is vertically provided with a through groove, a reversed T-shaped sliding block is placed in the hollow clamping groove, the T-shaped sliding block is fixedly connected with a box body at the top end, and each box body is hingedly connected with a connecting piece which is inclined to the position of the bottom plate axis at one end close to the bottom plate axis. The structure greatly enhances the vibration reduction effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy dissipation and vibration reduction, in particular to a self-power generation multi-dimensional energy dissipation and vibration isolation device. BACKGROUND

[0002] In recent years, the urbanization process in China has been rapidly advancing, and the rail transit such as subway, high-speed rail and highway has been continuously extended to connect different cities and regions into a network, which brings convenience for people's daily travel and creates opportunities for regional economic development. The rail transit construction has become one of the most important issues in the 21st century. However, the supporting technology of the rapidly developing rail transit is not mature, and vibration is a serious problem faced by most rail transits. The interaction between the wheel and the track, the earthquake action and other factors can all produce vibration. These vibrations not only cause damage to the rail structure itself, but also produce vibration excitation to the surrounding buildings, shorten the service life of the buildings and affect the daily life of residents. The origami metamaterial is a kind of metamaterial with energy dissipation and noise reduction effect. Vibration can make the origami metamaterial fold and induce dynamic behavior, including bistable and multistable dynamic behavior, transient dynamic behavior and wave propagation dynamic behavior. The eddy current effect refers to the phenomenon that a block-shaped metal conductor placed in a changing magnetic field or a block-shaped metal conductor cutting the magnetic force line in a magnetic field will generate a vortex-shaped induced current in the block-shaped metal conductor. This vortex-shaped induced current is called eddy current, or simply vortex.

[0003] In order to achieve the purpose of anti-vibration and noise reduction, the conventional method is to install a vibration isolation device on the track to dissipate vibration energy. Although there are many types of vibration isolation devices nowadays, the vibration reduction effect is limited. SUMMARY

[0004] To solve the above technical problems, the main purpose of the present application is to provide a self-power generation multi-dimensional energy dissipation and vibration isolation device. The origami metamaterial is used to fold and induce dynamic behavior, which realizes multi-mode energy dissipation and vibration reduction. In addition, the origami metamaterial is combined with the electromagnetic vibration reduction of magnetorheological material, which greatly enhances the vibration reduction effect and effectively reduces the adverse effects of vibration on the rail structure.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme.

[0006] The application discloses a self-generating multi-dimensional energy consumption vibration isolation device, which comprises a circular bottom plate and further comprises a vertical energy consumption component and a horizontal energy consumption component; the vertical energy consumption component comprises a folded paper metamaterial outer cylinder which is vertically arranged at the center of the bottom plate and is fixedly connected with the upper surface of the bottom plate at the lower end; the folded paper metamaterial outer cylinder is internally provided with a magnetorheological fluid; the upper end of the folded paper metamaterial outer cylinder is fixedly connected with a rubber top plate; the top end of the rubber top plate is fixedly connected with a rubber ring; the center of the rubber top plate is provided with a first hole; a screw nut mechanism is vertically inserted into the center of the folded paper metamaterial outer cylinder; the upper end of the screw rod penetrates out of the first hole; the lower end of the screw rod is rotationally connected with the center of the bottom plate; the lower end of the screw rod is inserted into the bottom plate; the screw rod is fixedly connected with a blade in the circumferential direction; the upper end surface of the nut is fixedly connected with the inner wall of the rubber top plate; the horizontal energy consumption component comprises a plurality of permanent magnets which are uniformly distributed around the bottom plate; the S-level of the permanent magnet faces the center of the bottom plate; the permanent magnet is fixedly connected with the bottom plate; the bottom plate is vertically provided with a through groove between each permanent magnet and the axis of the bottom plate; a reversed T-shaped sliding block is placed in the through groove; the top end of the T-shaped sliding block is fixedly connected with a box body; each box body is hingedly connected with a connecting piece which is inclined to the axis of the bottom plate at one end close to the axis of the bottom plate; the upper end of the connecting piece is hingedly connected with the lower end of the rubber top plate.

[0007] Further, the box body is made of metal, and a plurality of metal particles are placed in the box body.

[0008] Further, the device further comprises coils wound outside each box body and outside the folded paper metamaterial outer cylinder, and the two coils are connected in series to form a closed path.

[0009] Further, the connecting piece is a steel connecting rod.

[0010] Further, the connecting piece is a viscous damper.

[0011] Further, each through groove is provided with a stopper above the folded paper metamaterial outer cylinder, and the bottom end of each stopper is fixedly connected with the upper surface of the bottom plate.

[0012] Further, the folded paper metamaterial outer cylinder is in the shape of a corrugated pipe, and the folded paper metamaterial outer cylinder is made of rubber.

[0013] Further, the rubber ring is made of rubber, and the outer diameter of the rubber ring is the same as the outer diameter of the rubber top plate; the rubber top plate is made of rubber; and the height of the rubber ring is higher than the height of the upper end of the screw rod penetrating out of the rubber top plate.

[0014] Further, the bottom plate is made of copper or steel; the stopper is made of copper or steel; and the T-shaped sliding block is made of copper or steel.

[0015] Further, the cross-sectional shape of the bottom plate is circular.

[0016] The technical scheme of the present application utilizes the folding and induced dynamic behavior of the paper-folding metamaterial to realize energy dissipation and vibration reduction in multiple ways, and combines the paper-folding metamaterial with electromagnetic vibration reduction of the magneto-rheological material, greatly enhancing the vibration reduction effect and effectively reducing the adverse effects of vibration on the track structure. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0018] Figure 1 It is a partial cross-sectional structure schematic diagram of the present application under the front side view angle.

[0019] Figure 2 It is a structure schematic diagram of the present application under the front side view angle.

[0020] Figure 3 It is a front side view structure schematic diagram of the paper-folding metamaterial outer cylinder of the present application.

[0021] Figure 4 It is a top view structure schematic diagram of part of the bottom plate of the present application.

[0022] In the above drawings: 1, bottom plate; 11, stop block; 2, vertical energy dissipation component; 21, paper-folding metamaterial outer cylinder; 22, magneto-rheological fluid; 23, rubber top plate; 24, rubber ring; 25, first hole; 26, screw nut mechanism; 27, blade; 3, horizontal energy dissipation component; 31, permanent magnet; 32, through slot; 33, T-shaped sliding block; 34, box body; 341, metal particles; 35, connecting piece; 351, viscous damper; 4, coil. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0024] In the following description, specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein, and skilled in the art can make similar extensions without departing from the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0025] REFERENCE Figure 1 ,Figure 3 and Figure 4 The application discloses a self-power-generating multi-dimensional energy consumption vibration isolation device, which comprises a circular bottom plate 1, a vertical energy consumption component 2 and a horizontal energy consumption component 3. The vertical energy consumption component 2 comprises a folded paper metamaterial outer cylinder 21, which is vertically arranged at the center of the bottom plate 1 and is fixedly connected with the upper surface of the bottom plate 1 at the lower end. The folded paper metamaterial outer cylinder 21 is internally provided with a magneto-rheological fluid 22, and the liquid level of the magneto-rheological fluid 22 is lower than half the height of the folded paper metamaterial outer cylinder 21. A rubber top plate 23 is fixedly connected with the upper end of the folded paper metamaterial outer cylinder 21, and a rubber ring 24 is fixedly connected with the top end of the rubber top plate 23. A first hole 25 is arranged at the center of the rubber top plate 23. A screw nut mechanism 26 is vertically arranged at the center of the folded paper metamaterial outer cylinder 21. The screw nut mechanism 26 is usually composed of a screw rod and a nut. Preferably, the screw nut mechanism can be a ball-type screw nut mechanism, which can improve the strength and reduce the friction between the screw rod and the nut. The upper end of the screw rod is arranged to pass through the first hole 25 and is provided with a certain gap between the screw rod and the first hole 25. The lower end of the screw rod is rotatably connected with the center of the bottom plate 1 and is arranged in the bottom plate 1. A blade 27 is fixedly connected with the circumferential surface of the screw rod. The upper end surface of the nut is fixedly connected with the inner wall of the rubber top plate 23. Figure 2 The horizontal energy consumption component 3 comprises a plurality of permanent magnets 31 which are uniformly arranged around the bottom plate 1. Specifically, the number of the permanent magnets 31 is four, and the permanent magnets 31 are uniformly arranged on the bottom plate 1. The S-level of the permanent magnet 31 is directed to the center of the bottom plate 1. The permanent magnet 31 is fixedly connected with the bottom plate 1. A through groove 32 is vertically arranged at the position between each permanent magnet 31 and the axis of the bottom plate 1. A reversed T-shaped sliding block 33 is arranged in the through groove 32 and is in sliding connection with the through groove 32. The horizontal plate of the T-shaped sliding block 33 is in contact with the lower end surface of the bottom plate 1, so that the upward movement of the T-shaped sliding block 33 is avoided. A box body 34 is fixedly connected with the top end of the T-shaped sliding block 33. A connecting piece 35 which is positively inclined to the axis of the bottom plate 1 is hingedly connected with one end of each box body 34 which is close to the axis of the bottom plate 1. The upper end of the connecting piece 35 is hingedly connected with the lower end of the rubber top plate 23.

[0026] In the above embodiment, the external vibration load is first transmitted to the rubber ring 24 on the rubber top plate 23, causing the rubber ring 24 to deform and consume a small amount of energy. Due to the compression deformation of the rubber ring, the rubber top plate 23 deforms, and the nut in the screw nut mechanism 26 is pressed downward. After the nut mechanism is pressed, it moves vertically downward. Since the nut and the screw are threadedly connected, the nut will drive the screw to rotate in the bottom plate 1, thereby realizing the effect of converting vertical motion into rotary motion. The blade 27 fixedly connected with the screw also rotates with the screw. At this time, the blade 27 needs to overcome the friction between the magnetic rheological fluid 22 to rotate, which further consumes energy. At the same time, the rubber top plate 23 transmits vibration energy to the folded paper metamaterial outer cylinder 21, causing it to fold and deform along the fold line to consume energy. The deformation of the folded paper metamaterial outer cylinder 21 causes the pressure in the cylinder to change, causing the magnetic rheological fluid 22 to move in the cylinder to consume energy. Further, the rubber top plate 23 transmits vibration energy to the connecting piece 35, which drives the box body 34 to move horizontally on the bottom plate 1 to overcome friction and consume energy. At the same time, the T-shaped slider 33 provides a guiding effect for the movement of the box body 34 in the direction of the through groove 32.

[0027] Further, referring to Figure 1 , the box body 34 is made of metal, and a plurality of metal particles 341 are placed in the box body 34.

[0028] In the above embodiment, by placing metal particles 341 in the box body 34, the internal metal particles 341 can roll and collide with each other when the box body 34 moves to consume energy, further improving the vibration reduction effect.

[0029] Further, referring to Figure 1 and Figure 2 , it also includes coils 4 wound outside each of the box bodies 34 and the folded paper metamaterial outer cylinder 21, and two of the coils 4 are connected in series to form a closed path.

[0030] In the above embodiment, when the distance between the box body 34 and the permanent magnet 31 changes, the magnetic flux in the external closed coil 4 changes. According to the law of electromagnetic induction, the coil 4 outside the box body 34 will generate an induced current and flow to the coil 4 outside the folded paper metamaterial outer cylinder 21. This process changes the magnetic field in the box body 34, causing the metal particles 341 to generate eddy currents during movement, and changing the magnetic field in the folded paper metamaterial outer cylinder 21, causing the temperature of the magnetic rheological fluid 22 to rise, the fluidity to decrease, and the energy consumption during movement to increase. At the same time, the blade 27 cuts the magnetic induction lines to generate eddy currents, further consuming energy.

[0031] Further, referring to Figure 1 , the connecting piece 35 is a steel connecting rod.

[0032] In the above embodiments, by limiting the connecting rod to steel, it is possible to achieve hinged connections at both ends to the rubber top plate 23 and the box body 34, respectively.

[0033] Further, refer to Figure 1 and Figure 2 The connector 35 is a viscous damper 351.

[0034] In the above embodiments, by defining the connecting rod as a viscous damper 351, not only can the upper and lower ends be connected to the rubber top plate 23 and the box body 34 respectively, but the top plate also transmits vibration energy to the viscous damper 351, which compresses and deforms the damper to consume energy.

[0035] Further, refer to Figure 1 and Figure 2 Each of the through slots 32 is provided with a stop block 11 above the origami metamaterial outer cylinder 21, and the bottom end of each stop block 11 is fixedly connected to the upper surface of the base plate 1.

[0036] In the above embodiments, the stop 11 can limit the extreme position of the box 34 near the origami metamaterial outer cylinder 21.

[0037] Further, refer to Figure 1 and Figure 2 The origami metamaterial outer cylinder 21 is in the shape of a "corrugated tube" and is made of rubber.

[0038] In the above embodiments, by limiting the material of the origami metamaterial outer cylinder 21 to rubber, it is easy to deform and has a high shape recovery ability. At the same time, the origami metamaterial outer cylinder 21 is in the shape of a "corrugated tube", which is a derivative origami structure based on Miura Origami. The origami metamaterial outer cylinder 21 can deform along the crease after being subjected to pressure.

[0039] Further, refer to Figure 1 The rubber ring 24 is made of rubber and has the same outer diameter as the rubber top plate 23. The rubber top plate 23 is also made of rubber. The height of the rubber ring 24 is higher than the height at which the upper end of the lead screw passes through the rubber top plate 23.

[0040] In the above embodiments, the rubber ring 24 is made of rubber, which is easy to deform and has a high shape recovery ability. At the same time, its outer diameter is the same as that of the rubber top plate 23. The height of the rubber ring 24 is higher than the height of the upper end of the lead screw that passes through the rubber top plate 23, so that the vibration load can be transferred to the rubber ring 24 first.

[0041] Further, refer to Figure 1The material of the bottom plate 1 is copper or steel; the material of the stopper 11 is copper or steel; and the material of the T-shaped sliding block 33 is copper or steel.

[0042] In the above embodiment, by limiting the material of the bottom plate 1 and the T-shaped sliding block 33 to be copper or steel, the heat conduction performance is good, when the box body 34 moves by friction, heat is generated, and the bottom plate 1 can absorb the heat of the box body 34 to prevent the box body 34 from deforming.

[0043] Further, referring to Figure 1 The cross-sectional shape of the bottom plate 1 is circular.

[0044] In the above embodiment, by limiting the cross-sectional shape of the bottom plate 1 and the top plate to be circular, the stress of the bottom plate 1 can be uniform.

[0045] Compared with the prior art, the advantages of the present application are:

[0046] The vertical vibration load is decomposed and dissipated in the vertical and horizontal directions, which expands the working range of the vibration isolation device and enhances the vibration isolation effect;

[0047] The electromagnetic vibration reduction theory of the origami metamaterial and the magnetorheological material is combined, the mechanical properties of the two are utilized, the vibration isolation effect of a single energy dissipation material is amplified, and multiple materials are used for collaborative vibration isolation and energy dissipation;

[0048] The electromagnetic principle is used to make the self-generating multi-dimensional energy dissipation vibration isolation device of the present application generate electric energy when subjected to vibration load, and then the coil 4 is energized to trigger subsequent multi-path energy dissipation.

[0049] Although the present application has been described in detail in the specification and specific embodiments, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of the present application without deviating from the present application are within the scope of the present application.

Claims

1. A self-generating multi-dimensional energy-consuming vibration isolation device comprising a circular base plate (1), characterized in that: It also includes vertical energy dissipation components (2), horizontal energy dissipation components (3); the vertical energy dissipation components (2) contain folded paper metamaterial outer cylinder (21), the folded paper metamaterial outer cylinder (21) is vertically arranged in the center of the bottom plate (1), and the lower end is fixedly connected with the upper surface of the bottom plate (1), the folded paper metamaterial outer cylinder (21) is in the shape of "bellows", and is internally provided with magnetorheological fluid (22), the upper end of the folded paper metamaterial outer cylinder (21) is fixedly connected with the rubber top plate (23), the top end of the rubber top plate (23) is fixedly connected with the rubber ring (24), the center of the rubber top plate (23) is provided with a first hole (25), the center of the folded paper metamaterial outer cylinder (21) is vertically provided with a screw nut mechanism (26), the upper end of the screw passes out of the first hole (25), and the lower end is rotatably connected with the center of the bottom plate (1), the lower end of the screw is inserted into the bottom plate (1), the screw is fixedly connected with a blade (27) in the circumferential direction, and the upper end surface of the nut is fixedly connected with the inner wall of the rubber top plate (23); the horizontal energy dissipation components (3) contain a plurality of permanent magnets (31) uniformly distributed around the bottom plate (1), the S level of the permanent magnet (31) faces the center of the bottom plate (1), the permanent magnet (31) is fixedly connected with the bottom plate (1), and the bottom plate (1) is vertically provided with a through slot (32) near the position between each permanent magnet (31) and the axis of the bottom plate (1). A reversed T-shaped slider (33) is placed in the through slot (32), the top end of the T-shaped slider (33) is fixedly connected with a box body (34), one end of each box body (34) near the axis of the bottom plate (1) is hingedly connected with a connecting piece (35) inclined to the position of the axis of the bottom plate (1), the upper end of the connecting piece (35) is hingedly connected with the lower end of the rubber top plate (23), and a coil (4) is wound outside each box body (34) and outside the folded paper metamaterial outer cylinder (21).

2. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 1, wherein, The box body (34) is made of metal, and a plurality of metal particles (341) are placed in the box body (34).

3. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 2, wherein, The coil (4) is connected in series to form a closed path.

4. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 3, wherein, The connecting piece (35) is a steel connecting rod.

5. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 3, wherein, The connecting piece (35) is a viscous damper (351).

6. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 5, wherein, Each through slot (32) is provided with a stop block (11) above the folded paper metamaterial outer cylinder (21), and the bottom end of each stop block (11) is fixedly connected with the upper surface of the bottom plate (1).

7. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 6, wherein, The material of the bottom plate (1) is copper or steel; the material of the stop block (11) is copper or steel; the material of the T-shaped slider (33) is copper or steel.

8. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 6, wherein, The folded paper metamaterial outer cylinder (21) is made of rubber.

9. The self-generating multi-dimensional energy-dissipating vibration isolation device of claim 1, wherein, The rubber ring (24) is made of rubber, and has the same outer diameter as the rubber top plate (23), the rubber top plate (23) is made of rubber, and the height of the rubber ring (24) is higher than the height of the upper end of the screw passing out of the rubber top plate (23).

10. The self-generating, multi-dimensional energy-dissipating vibration isolation device of claim 9, wherein, The cross-sectional shape of the bottom plate (1) is circular.

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