CN220791912U - Elastic metamaterial vibration isolation unit - Google Patents
Elastic metamaterial vibration isolation unit Download PDFInfo
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- CN220791912U CN220791912U CN202322503611.5U CN202322503611U CN220791912U CN 220791912 U CN220791912 U CN 220791912U CN 202322503611 U CN202322503611 U CN 202322503611U CN 220791912 U CN220791912 U CN 220791912U
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- vibration isolation
- metal frame
- isolation unit
- mass
- mass block
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- 238000002955 isolation Methods 0.000 title claims abstract description 102
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- 238000000576 coating method Methods 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 238000013016 damping Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model discloses an elastic metamaterial vibration isolation unit which comprises a regular hexahedral metal frame, an elastic coating and a plurality of mass blocks, wherein the metal frame is in a multi-lattice shape, the elastic coating is in contact connection with the metal frame and coats the metal frame, the mass blocks are arranged inside the metal frame and are connected with all metal columns of the metal frame, and the mass blocks are arranged in an array inside the metal frame. The utility model uses the metal frame as a carrier, an elastic coating is arranged as a main component for vibration attenuation, a mass block is filled in the metal frame, and the weight of the mass block and the generated inertia force are utilized to enhance the bearing capacity of the metal frame while improving the integral damping of the vibration isolation unit so as to consider the vibration isolation effect and the bearing capacity.
Description
Technical Field
The utility model relates to the technical field of vibration isolation, in particular to an elastic metamaterial vibration isolation unit.
Background
Mechanical vibration can have a great influence on mechanical equipment or mechanical structures, and can lead to structural fatigue failure of the mechanical equipment, increase wear of the mechanical equipment, cause fatigue fracture, interfere with fluid dynamics, influence the measurement precision of precise instruments and the like, so that the safety and reliability of the mechanical equipment and the mechanical structures are reduced. Therefore, effective vibration reduction measures are required to ensure safe, stable and long-term operation of the engineering.
The principle of the vibration isolation device is mainly that the influence of vibration on a vibration-isolated object is reduced through the connection between an isolated vibration source and the vibration-isolated object, wherein the vibration isolation device comprises active vibration isolation and passive vibration isolation, the active vibration isolation is used for controlling a protection object through external energy sources so as to achieve a vibration isolation effect, and the passive vibration isolation is used for reducing mechanical vibration by arranging the vibration isolation device between the protection object and the vibration source, so that compared with the active vibration isolation requiring the external energy sources, the traditional vibration isolation device generally adopts a passive vibration isolation mode.
The traditional vibration isolation device comprises a spring vibration isolator, a rubber vibration isolator, an air spring vibration isolator and the like, for the vibration isolation device, the influence of the weight of a protection object on the vibration isolation effect is larger, the larger the weight of the protection object is, the worse the vibration isolation effect is, the bearing capacity of the vibration isolation device is lower, and some protection objects with larger weight in mechanical equipment basically exceed the bearing capacity of the vibration isolation device such as the spring vibration isolator and the like, so that the vibration isolation effect cannot be realized.
Disclosure of Invention
The utility model provides an elastic metamaterial vibration isolation unit, which aims to solve the technical problem that the bearing capacity of the conventional passive vibration isolation device is insufficient.
The technical scheme of the utility model is as follows:
An elastic metamaterial vibration isolation unit comprises a regular hexahedral metal frame, an elastic coating and a plurality of mass blocks, wherein the metal frame is in a multi-lattice shape, the elastic coating is in contact connection with the metal frame and coats the metal frame, the mass blocks are arranged inside the metal frame and are connected with all metal columns of the metal frame, and the mass blocks are arranged in an array inside the metal frame.
Compared with structures such as springs and the like, the metal frame has the advantages of bearing capacity, bearing effect can be achieved in a state of equal size or smaller size for a protection object with larger weight, and mechanical vibration received by the metal frame is absorbed and reduced by an elastic coating coated on the surface of the metal frame in the process of layer-by-layer and lattice-by-lattice transmission, so that the vibration isolation unit achieves the vibration isolation effect. The mass block is arranged to improve the supporting capacity of the metal frame, the mass block is distributed along with the square array of the metal frame, the square array of the metal frame is filled with gaps, the supporting capacity of the vibration isolation unit is practically improved along with the increase of the number of layers, the damping of the vibration isolation unit is improved, the larger the damping is, the better the vibration isolation effect is, in addition, the mass block can provide downward inertia force in the vibration isolation process, the amplitude is continuously attenuated in the vibration process, and the vibration reduction and vibration isolation effects are achieved.
According to the elastic metamaterial vibration isolation unit, the mass block is of a spherical structure, the mass block is provided with the mounting groove penetrating through the center of the sphere, and any one metal column covering the elastic coating of the metal frame penetrates through the mounting groove, so that the mass block is located inside the vibration isolation unit.
According to the elastic metamaterial vibration isolation unit, the mass block is of a hemispherical structure, the plane end of the mass block is provided with the mounting groove penetrating through the center, and the metal column shared by two adjacent square grids of the metal frame is embedded into the mounting groove, so that the mass block is located between the two adjacent square grids of the vibration isolation unit.
According to the elastic metamaterial vibration isolation unit, the mass block is of a quarter spherical structure, the joint of the two plane ends of the mass block is provided with the mounting groove penetrating through the center, and the metal columns which are not connected with other metal frames are embedded into the mounting groove, so that the mass block is arranged in the square of the vibration isolation unit.
According to the elastic metamaterial vibration isolation unit, the mounting groove is in interference fit with the metal column of the metal frame.
The surface of the metal frame is covered with an elastic coating, and when the installation between the metal frame and the installation groove is realized, the metal has a compression space, so that the size of the installation groove is slightly smaller than that of the metal frame with the elastic coating on the surface, so that the mass block can be fixed on the metal frame, the damping of the metal frame is improved, and the regularity of the vibration isolation unit is ensured.
In the elastic metamaterial vibration isolation unit, the curved surface of the mass block faces to the grid center of the vibration isolation unit.
The mass block is provided with a mounting groove and is connected with the metal column of the metal frame, so that the centroid and the sphere center of the mass block are positioned on the metal column, and for the hemispherical or quarter spherical mass block, the direction of the curved surface of the mass block faces to the center of each square or the inside of the vibration isolation unit.
The elastic metamaterial vibration isolation unit is characterized in that the metal frame is a continuous body.
The metal frame is the part with the highest rigidity of the whole vibration isolation unit, the influence of mechanical vibration is the greatest, if a breaking point exists, the induction sensitivity of the structure to the mechanical vibration is high, and compared with other structures, the structure is easier to be subjected to structural fatigue failure, mechanical abrasion is increased, fatigue fracture is caused, and the like, so that the continuous structure is favorable for ensuring the bearing capacity and structural stability of the vibration isolation unit.
The ratio of the diameter of the mass block to the square edge length of the metal frame of the elastic metamaterial vibration isolation unit is smaller than 2:3.
In the above elastic metamaterial vibration isolation unit, the ratio of the radial dimension of the elastic coating to the radial dimension of the metal frame is 13:1.
The elastic metamaterial vibration isolation unit has the advantages that the mass block is of a solid structure.
The mass block provides inertia force and damping for the vibration isolation device, so that the larger the weight of the mass block is, the more favorable for improving the vibration isolation effect of the vibration isolation unit, the mass block with the solid structure is easy to manufacture, and the vibration isolation effect is better.
The elastic metamaterial vibration isolation unit is characterized in that the mass block is made of iron or lead.
The elastic metamaterial vibration isolation unit is characterized in that the metal frame is made of steel.
The elastic metamaterial vibration isolation unit is characterized in that the elastic coating is made of rubber.
According to the scheme, the vibration isolation unit has the beneficial effects that the metal frame is used as a carrier, the elastic coating is arranged as a main component for vibration attenuation, the mass block is filled in the metal frame, and the weight of the mass block and the inertia force generated by the mass block are utilized, so that the bearing capacity of the metal frame is enhanced while the integral damping of the vibration isolation unit is improved, and the vibration isolation effect and the bearing capacity are both considered.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a vibration isolation unit.
FIG. 2 is a schematic view of a metal frame and an elastic coating.
Fig. 3 is a schematic structural view of a spherical mass.
Fig. 4 is a schematic structural view of a hemispherical mass.
Fig. 5 is a schematic structural view of a quarter sphere shaped mass block.
Wherein, each reference sign in the figure:
1. a metal frame; 2. an elastic coating; 3. a mass block; 31. a mounting groove; 4. and a vibration isolation unit.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
An elastic metamaterial vibration isolation unit is shown in fig. 1 and 2, and comprises a regular hexahedral metal frame 1, an elastic coating 2 and a plurality of mass blocks 3, wherein the metal frame 1 is in a multi-lattice shape, the elastic coating 2 is in contact connection with the metal frame 1 and coats the metal frame 1, the mass blocks 3 are arranged inside the metal frame 1 and are connected with all metal columns of the metal frame 1, and the mass blocks 3 are arranged in an array inside the metal frame 1.
Compared with structures such as springs, the metal frame 1 has more advantages in bearing capacity, the bearing effect can be achieved in a state of equal size or smaller size for a protection object with larger weight, and mechanical vibration received by the metal frame 1 is absorbed and reduced by the elastic coating 2 coated on the surface of the metal frame 1 in the process of layer-by-layer and lattice-by-lattice transmission, so that the vibration isolation unit 4 achieves the vibration isolation effect. The setting of quality piece 3, firstly, in order to improve the bearing capacity of metal frame 1, the quality piece 3 is along with the square array arrangement of metal frame 1, fills the inside square of metal frame 1 with the gap, along with the increase of the number of layers improves the bearing capacity of vibration isolation unit 4 really, firstly improves the damping of vibration isolation unit 4, and the damping is bigger, and vibration isolation effect is better, and in addition, the setting of quality piece 3 can also provide decurrent inertial force in vibration isolation process, constantly attenuates the amplitude in vibration, reaches damping, vibration isolation's effect.
The mass blocks 3 with spherical structures exist, and the mass blocks 3 with spherical structures are mostly arranged inside the vibration isolation units 4 and penetrated by metal columns of each square grid inside the vibration isolation units 4. As shown in fig. 3, the mass 3 is provided with a mounting groove 31 penetrating the center of the sphere, and any one of the metal posts of the metal frame 1 covering the elastic coating 2 penetrates through the mounting groove 31, so that the mass 3 is located inside the vibration isolation unit 4.
The mass block 3 with a hemispherical structure exists, as shown in fig. 1 and 4, a mounting groove 31 penetrating through the center is formed at the plane end of the mass block 3 with a hemispherical structure, and a metal column shared by two adjacent square grids of the metal frame 1 is embedded into the mounting groove 31, so that the mass block 3 is located between the two adjacent square grids of the vibration isolation unit 4.
The mass block 3 with the quarter-spherical structure exists, as shown in fig. 1 and 5, a mounting groove 31 penetrating through the center is formed at the joint of two plane ends of the mass block 3 with the quarter-spherical structure, and metal columns which are not connected with other metal frames 1 of the metal frames 1 are embedded into the mounting groove 31, so that the mass block 3 is arranged in the square of the vibration isolation unit 4.
The mounting groove 31 is in interference fit with the metal column of the metal frame 1. The surface of the metal frame 1 is covered with an elastic coating layer 2, and when the installation between the metal frame 1 and the installation groove 31 is realized, the metal has a compression space, so that the size of the installation groove 31 is only slightly smaller than the size of the metal frame 1 with the elastic coating layer 2 on the surface, so that the mass block 3 can be fixed on the metal frame 1, the damping of the metal frame 1 is improved, and the regularity of the vibration isolation unit 4 is ensured.
The hemispherical mass block 3 and the quarter spherical mass block 3 are both positioned at the outermost side of the vibration isolation unit 4, the planes of the hemispherical mass block 3 and the quarter spherical mass block are flatly attached to the surface of the vibration isolation unit 4, and the curved surface of the mass block 3 faces the grid center of the vibration isolation unit 4. The mass 3 is provided with mounting grooves 31 connected with the metal columns of the metal frame 1, so that the centroid and the sphere center of the mass 3 are located on the metal columns, and for the hemispherical or quarter spherical mass 3, the curved surface of the mass is arranged in a direction towards the center of each square, or towards the inside of the vibration isolation unit 4.
The mass 3 is of solid construction. The mass block 3 provides inertia force and damping for the vibration isolation device, so that the larger the weight of the mass block 3 is, the more favorable for improving the vibration isolation effect of the vibration isolation unit 4, and the mass block 3 with a solid structure is easy to manufacture and has better vibration isolation effect.
The metal frame 1 is a continuous body. The metal frame 1 is the part with the highest rigidity of the whole vibration isolation unit 4, the influence of mechanical vibration is the greatest, if a breaking point exists, the induction sensitivity of the structure to the mechanical vibration is high, and compared with other structures, the structure is easier to be subjected to structural fatigue failure, mechanical abrasion is increased, fatigue fracture is caused, and the like, so that the continuous structure is beneficial to ensuring the bearing capacity and structural stability of the vibration isolation unit 4.
In one embodiment, the ratio of the diameter of the mass 3 to the square edge of the metal frame 1 is less than 2:3, and in infinite proximity to 2:3 are preferably, that is, adjacent masses just touch, so are slightly smaller than the square edge of the metal frame 1.
In one of the embodiments, the ratio of the radial dimension of the elastic coating 2 to the radial dimension of the metal frame 1 is 13:1.
In this embodiment, the material of the mass 3 is lead. In other embodiments, the material of the mass 3 is high density iron.
In the present embodiment, the material of the metal frame 1 is steel.
In the present embodiment, the material of the elastic coating layer 2 is rubber.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The elastic metamaterial vibration isolation unit is characterized by comprising a regular hexahedral metal frame, an elastic coating and a plurality of mass blocks, wherein the metal frame is in a multi-lattice shape, the elastic coating is in contact connection with the metal frame and coats the metal frame, the mass blocks are arranged inside the metal frame and are connected with all metal columns of the metal frame, and the mass blocks are arranged in an array inside the metal frame.
2. The elastic metamaterial vibration isolation unit according to claim 1, wherein the mass block is of a spherical structure, a mounting groove penetrating through the center of the sphere is formed in the mass block, and any one metal column of the metal frame covering the elastic coating penetrates through the mounting groove, so that the mass block is located inside the vibration isolation unit.
3. The elastic metamaterial vibration isolation unit according to claim 1, wherein the mass block is of a hemispherical structure, a mounting groove penetrating through the center is formed in the plane end of the mass block, and a metal column shared by two adjacent square grids of the metal frame is embedded into the mounting groove, so that the mass block is located between the two adjacent square grids of the vibration isolation unit.
4. The elastic metamaterial vibration isolation unit according to claim 1, wherein the mass block is of a quarter spherical structure, a mounting groove penetrating through the center is formed at the joint of two plane ends of the mass block, and metal columns which are not connected with other metal frames are embedded into the mounting groove, so that the mass block is arranged in a square of the vibration isolation unit.
5. An elastic metamaterial vibration isolation unit according to claim 2, 3 or 4, wherein the mounting groove is in interference fit with the metal posts of the metal frame.
6. An elastic metamaterial vibration isolation unit as claimed in claim 3 or 4, wherein the curved surface of the mass faces the center of the square of the vibration isolation unit.
7. An elastic metamaterial vibration isolation unit as claimed in claim 1, wherein the metal frame is a continuous body.
8. An elastic metamaterial vibration isolation unit as claimed in claim 1, wherein the mass is of solid construction.
9. An elastic metamaterial vibration isolation unit as claimed in claim 1, wherein the ratio of the diameter of the mass to the square edge length of the metal frame is less than 2:3.
10. An elastic metamaterial vibration isolation unit as claimed in claim 1, wherein the ratio of the radial dimension of the elastic coating to the radial dimension of the metal frame is 13:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322503611.5U CN220791912U (en) | 2023-09-14 | 2023-09-14 | Elastic metamaterial vibration isolation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322503611.5U CN220791912U (en) | 2023-09-14 | 2023-09-14 | Elastic metamaterial vibration isolation unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220791912U true CN220791912U (en) | 2024-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322503611.5U Active CN220791912U (en) | 2023-09-14 | 2023-09-14 | Elastic metamaterial vibration isolation unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220791912U (en) |
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2023
- 2023-09-14 CN CN202322503611.5U patent/CN220791912U/en active Active
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