CN111853141B - Combined phonon crystal vibration isolator - Google Patents
Combined phonon crystal vibration isolator Download PDFInfo
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- CN111853141B CN111853141B CN202010712610.XA CN202010712610A CN111853141B CN 111853141 B CN111853141 B CN 111853141B CN 202010712610 A CN202010712610 A CN 202010712610A CN 111853141 B CN111853141 B CN 111853141B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- General Engineering & Computer Science (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a combined type phononic crystal vibration isolator which comprises an outer shell, wherein phononic crystal vibration isolation rings are arranged in the outer shell, at least three groups of phononic crystal vibration isolation rings are parallel to each other, a first damping block is arranged between every two adjacent phononic crystal vibration isolation rings, a second damping block is arranged at the bottom of the outer shell, a magnet group is arranged between each phononic crystal vibration isolation ring and the outer shell, a pressing plate assembly is arranged above the outer shell, and a third damping block is arranged at the bottom of the pressing plate assembly, so that the problem that the conventional phononic crystal vibration isolator cannot isolate elastic waves outside a forbidden band range of the conventional phononic crystal vibration isolator is solved, and when a large load is borne, the displacement is overlarge, and; when bearing a small load, can't isolate one part of elastic wave, the problem that the vibration isolation effect is not good.
Description
Technical Field
The invention relates to a vibration isolator, in particular to a combined phononic crystal vibration isolator.
Background
Vibration is one of the inevitable factors during the running process of a train, and particularly when the vibration occurs in a city, the vibration has harmful effects on the sleeping of people, the precision of laboratory instruments and other occasions where silence is needed, so that the vibration reduction technology related to rail transit is always the focus of research. In engineering, rubber and steel springs are commonly used as vibration damping devices. The rubber has good vibration isolation effect on high-frequency vibration, but has poor stability and low rigidity; the steel spring has a strong rigidity but a poor effect on high-frequency vibration.
The phononic crystal can quickly attenuate elastic waves within the forbidden band range of the phononic crystal, and the attention is paid more and more to the field of vibration isolation in these years, and in rail transit, the used vibration isolator often needs to meet the requirements of displacement limitation under large load and good vibration isolation performance under small load, but the traditional phononic crystal vibration isolator can hardly meet the requirement of displacement limitation under the action of large load.
The conventional phononic crystal vibration isolator can only isolate elastic waves within the forbidden band range of the conventional phononic crystal vibration isolator, but cannot isolate elastic waves outside the forbidden band range of the conventional phononic crystal vibration isolator, so that the conventional phononic crystal vibration isolator can bear large load, has overlarge displacement and cannot meet the requirement of limiting the displacement generally; when a small load is applied, a part of the elastic waves cannot be isolated, and the expected vibration isolation effect cannot be achieved generally. Therefore, the vibration isolation performance of the conventional phononic crystal vibration isolator cannot meet the actual requirement.
Disclosure of Invention
The invention aims to solve the defects and provides a composite phononic crystal vibration isolator to hopefully solve the problems that the conventional phononic crystal vibration isolator cannot isolate elastic waves outside the forbidden band range, and when bearing a large load, the displacement is too large to form limit; when bearing a small load, can't isolate one part of elastic wave, the problem that the vibration isolation effect is not good.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a combined type phononic crystal vibration isolator which comprises an outer shell, wherein phononic crystal vibration isolation rings are arranged in the outer shell, the phononic crystal vibration isolation rings are at least three groups and are parallel to each other, a first damping block is arranged between every two adjacent phononic crystal vibration isolation rings, a second damping block is arranged at the bottom of the outer shell, a magnet group is arranged between each phononic crystal vibration isolation ring and the outer shell, a pressing plate assembly is arranged above the outer shell, and a third damping block is arranged at the bottom of the pressing plate assembly.
Preferably, the further technical scheme is as follows: the phononic crystal vibration isolation ring comprises an epoxy resin substrate, a plurality of metal spheres are embedded in the epoxy resin substrate, a rubber layer is sleeved outside the metal spheres, the metal spheres are arranged in a cubic lattice structure, and a fastening layer is coated on the outer wall of the epoxy resin substrate.
The further technical scheme is as follows: the magnet group comprises a first magnet and a second magnet, the first magnet and the second magnet are arranged at intervals, opposite poles are opposite, the central axis of the outer shell is centrosymmetric, and the first magnet and the second magnet are permanent magnets and arc-shaped petals.
The further technical scheme is as follows: the clamp plate assembly comprises a support plate, wherein a receiving plate is arranged at the bottom of the support plate, and the receiving plate and the support plate are respectively in a disc shape.
The further technical scheme is as follows: the outer wall of the first magnet is in contact with the inner wall of the outer shell, the outer wall of the second magnet is in contact with the inner wall of the outer shell, and the phononic crystal vibration isolation ring is movably arranged between the first magnet and the second magnet.
The further technical scheme is as follows: the diameter of the supporting plate is the same as the outer diameter of the outer shell, and the diameter of the bearing plate is between the diameter of the first damping block and the diameter of the phononic crystal vibration isolation ring.
The further technical scheme is as follows: the outer wall of the first magnet is in contact with the inner wall of the outer shell, the outer wall of the second magnet is in contact with the inner wall of the outer shell, and the phononic crystal vibration isolation ring is movably arranged between the first magnet and the second magnet.
The further technical scheme is as follows: the phononic crystal vibration isolation ring and the first damping block are respectively positioned on the central axis of the outer shell.
The further technical scheme is as follows: the outer shell is cylindrical.
The invention also provides a use method of the combined type phononic crystal vibration isolator, the combined type phononic crystal vibration isolator is used, and the operation steps are as follows: step S1, in an initial state, the first magnet and the second magnet interact to generate a magnetic field, and at the moment, the damping block and the phononic crystal vibration isolation ring are respectively in a static state; step S2, when the pressure plate component descends, the first damping block, the second damping block and the third damping block are respectively compressed, the photonic crystal vibration isolation ring descends, a magnetic field is cut at the same time, and a damping force is formed on the photonic crystal vibration isolation ring; and step S3, when the pressure plate assembly rises, the first damping block, the second damping block and the third damping block restore to the initial state under the action of the elastic force of the first damping block, the second damping block and the third damping block, at the moment, the phononic crystal vibration isolation ring rises, and the magnetic field is cut.
Compared with the prior art, the invention has the following beneficial effects: the multiple groups of the phononic crystal vibration isolation rings are arranged in the outer shell, and the first magnet and the second magnet which are mutually attracted are arranged between the multiple groups of the phononic crystal vibration isolation rings and the outer shell and are used for forming a magnetic field through interaction of the first magnet and the second magnet, so that when the phononic crystal vibration isolation rings move up and down along the central axis direction of the outer shell, the magnetic field is cut, and damping force is generated and is used for reducing vibration amplitude; through installing first snubber block between adjacent phononic crystal vibration isolation ring, install the second snubber block bottom the shell body, install the third snubber block bottom the clamp plate subassembly simultaneously, be used for by phononic crystal vibration isolation ring at rising or decline in-process, extrude first snubber block respectively, second snubber block and third snubber block, and through first snubber block, the spring action of second snubber block and third snubber block self provides the buffering effort to phononic crystal vibration isolation ring, be used for reducing the vibration range, improve shock-absorbing efficiency.
Drawings
Fig. 1 is a schematic perspective view illustrating a composite phononic crystal isolator according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view illustrating another embodiment of the present invention.
Fig. 3 is a schematic perspective view illustrating the inside of the outer case according to still another embodiment of the present invention.
Fig. 4 is an enlarged structural view illustrating a cross section of a phononic crystal vibration isolation ring according to still another embodiment of the present invention.
Fig. 5 is a schematic structural view illustrating a longitudinal section of an outer case according to still another embodiment of the present invention.
FIG. 6 is an enlarged schematic view illustrating a platen assembly according to still another embodiment of the present invention.
Fig. 7 is an enlarged schematic view illustrating an electromagnetic assembly according to still another embodiment of the present invention.
Fig. 8 is an enlarged view schematically illustrating a phononic crystal vibration isolation ring according to still another embodiment of the present invention.
In the figure, 1 is an outer shell, 2 is a photonic crystal vibration isolation ring, 3 is a first damping block, 4 is a second damping block, 5 is an epoxy resin matrix, 6 is a metal sphere, 7 is a rubber layer, 8 is a fastening layer, 9 is a first magnet, 10 is a second magnet, 11 is a third damping block, 12 is a support plate, and 13 is a bearing plate.
Detailed Description
The invention is further elucidated with reference to the drawing.
Referring to fig. 1, 2, 3, 5, and 8, an embodiment of the present invention is a composite photonic crystal vibration isolator, which includes an outer housing 1, and a photonic crystal vibration isolation ring 2 movably installed in the outer housing 1 for isolating a part of elastic waves generated by train operation by the photonic crystal vibration isolation ring 2 and reducing vibration generated during train operation, wherein the photonic crystal vibration isolation rings 2 are at least three groups, and adjacent photonic crystal vibration isolation rings 2 are parallel to each other, a first damping block 3 is disposed between adjacent photonic crystal vibration isolation rings 2, the first damping block 3 is fixedly installed between adjacent photonic crystal vibration isolation rings 2 by bonding, and is used for connecting and fixing the adjacent photonic crystal vibration isolation rings 2 by the first damping block 3, and simultaneously providing a buffering effect to the adjacent photonic crystal vibration isolation rings 2 by the first damping block 3, the vibration generated in the running process of the train is reduced, the running stability of the train is improved, meanwhile, the bottom of the outer shell 1 is provided with a second damping block 4, the second damping block 4 can be fixedly arranged at the bottom of the outer shell 1 in a strong bonding mode and is used for fixing the phononic crystal vibration isolation rings 2 arranged at the tops of the second damping block 4 mutually and providing a buffering effect, a magnet group is arranged between the phononic crystal vibration isolation rings 2 and the outer shell 1 and is used for generating a magnetic field on the inner wall of the outer shell 1 by the magnet group and enabling the phononic crystal vibration isolation rings 2 to cut the magnetic field generated by the magnet group in the process of rising or falling along the central axis of the outer shell 1 under the pressure, damping force is generated, the vibration in the running process of the train is reduced, the running stability of the train is improved, and a pressure plate component is arranged above the outer shell 1, the third damping block 11 is arranged at the bottom of the pressing plate assembly, can be fixed at the bottom of the pressing plate assembly in a strong bonding mode and is mutually fixed with the phononic crystal vibration isolation ring 2 at the top, and provides buffering acting force for the pressing plate assembly through the third damping block 11, so that the stability of the train in the running process is improved.
Referring to fig. 2, 3 and 4, in another embodiment of the present invention, in order to improve the vibration damping quality, the photonic crystal vibration isolation ring 2 is made of a local resonance type photonic crystal material, the photonic crystal vibration isolation ring 2 includes an epoxy resin matrix 5, the epoxy resin matrix 5 has a disk shape, a plurality of metal spheres 6 are embedded in the epoxy resin matrix 5, a rubber layer 7 is sleeved outside the plurality of metal spheres 6, the rubber layer 7 can be made of a silicone rubber material and is used for protecting the epoxy resin matrix 5 through the self-elastic action of the silicone rubber, and a plurality of the metal spheres 6 are arranged in a cubic lattice structure, the elastic wave is isolated, a fastening layer 8 is coated outside the epoxy resin matrix 5, the fastening layer 8 is made of steel materials and is used for fixing silicon rubber, and a closed disc-shaped structure is formed.
Referring to fig. 2, 3, 5 and 7, in another embodiment of the present invention, the magnet assembly includes a first magnet 9 and a second magnet 10, the first magnet 9 and the second magnet 10 are spaced apart from each other and have opposite poles, the first magnet 9 and the second magnet 10 are symmetric about a central axis of the outer housing 1, the first magnet 9 and the second magnet 10 are arc-shaped petals, the first magnet 9 and the second magnet 10 are detachably mounted on an inner wall of the outer housing 1, the first magnet 9 and the second magnet 10 are mounted on an inner wall of the outer housing 1 by strong adhesion, an outer wall of the first magnet 9 is tightly attached to the inner wall of the outer housing 1, an outer wall of the second magnet 10 is tightly attached to the inner wall of the outer housing 1, so as to improve the stability of the first magnet 9 and the second magnet 10 on the inner wall of the outer housing 1, the first magnet 9 and the second magnet 10 are both permanent magnets, and the first magnet 9 and the second magnet 10 are magnetically attracted to each other and generate a magnetic field in the outer housing 1.
Referring to fig. 1, 3, 5, 6 and 8, in another embodiment of the present invention, the pressing plate assembly includes a supporting plate 12 for supporting a train via the supporting plate 12, and a receiving plate 13 is disposed at the bottom of the supporting plate 12, the receiving plate 13 is fixedly mounted at the bottom of the supporting plate 12 by strong adhesion or screw connection, the receiving plate 13 and the supporting plate 12 are respectively disc-shaped, and the central axis of the receiving plate 13 is the same as the central axis of the supporting plate 12, further, the outer housing 1 is cylindrical, and the central axis of the receiving plate 13 is the same as the central axis of the outer housing 1, so as to improve the stability of the pressing plate assembly during the supporting process.
Referring to fig. 1, 3, 5 and 8, in another embodiment of the present invention, the outer diameter of the supporting plate 12 is the same as the outer diameter of the outer shell 1, and the supporting plate 12 is limited by the edge of the outer shell 1, so as to limit the maximum distance that the supporting plate 12 descends, and avoid the support plate 12 from descending too far, and improve the stability of the train during operation, and the diameter of the receiving plate 13 is between the diameter of the first damper block 3 and the diameter of the phononic crystal vibration isolation ring 2, so as to fix the supporting plate 12 and the third damper block 11 to each other through the receiving plate 13, and the central axis of the third damper block 11 is the same as the central axis of the receiving plate 13, so as to improve the service life of the phononic crystal vibration isolation ring 2, the first damper block 3, the second damper block 4 and the third damper block 11.
Referring to fig. 2, 3, 5 and 7, in another embodiment of the present invention, the outer wall of the first magnet 9 is in contact with the inner wall of the outer housing 1, the outer wall of the second magnet 10 is in contact with the inner wall of the outer housing 1, the first magnet 9 and the second magnet 10 are respectively fixedly attached to the inner wall of the outer housing 1 by strong adhesion, the photonic crystal vibration isolation ring 2 is movably disposed between the first magnet 9 and the second magnet 10, the side wall of the photonic crystal vibration isolation ring 2 is in contact with the inner wall of the first magnet 9, the side wall of the photonic crystal vibration isolation ring 2 is in contact with the inner wall of the second magnet 10, and the photonic crystal vibration isolation ring 2 vibrates up and down along the central axis direction of the outer housing 1 when receiving an external force, so as to prevent the photonic crystal vibration isolation ring 2 from shaking in the outer housing 1, meanwhile, the phononic crystal vibration isolation ring 2 and the first damping 3 block are respectively positioned on the central axis of the outer shell 1, so that the stability of the phononic crystal vibration isolation ring 2 in the up-and-down moving process is improved.
Referring to fig. 3 and 5, in another embodiment of the present invention, in order to improve the stability of the train during operation, the first damper block 3, the second damper block 4, and the third damper block 11 are all cylindrical and have the same size, and the central axes of the first damper block 3, the second damper block 4, and the third damper block 11 are respectively the same as the central axis of the outer shell 1, so as to improve the stability of the photonic crystal vibration isolation ring 2 during the up-and-down movement and the stability of the train during operation.
Referring to fig. 3 and 5, in another embodiment of the present invention, the number of the phononic crystal vibration isolation rings 2 is at least three, and the number of the phononic crystal vibration isolation rings 2 can be determined according to the vertical height of the outer housing 1 and the vertical height of the magnet assembly.
Referring to fig. 1, 3, 5 and 8, in another embodiment of the present invention, the first damper block 3, the second damper block 4 and the third damper block 11 are made of rubber, and are used for fixing the adjacent photonic crystal vibration isolation rings 2 by the first damper block 3, mounting the photonic crystal vibration isolation rings 2 at the bottom of the outer shell 1 by the second damper block 4, and reducing the compressive stress between the adjacent photonic crystal vibration isolation rings 2 by the first damper block 3, the second damper block 4 and the third damper block 11, so as to reduce the vibration generated during the operation of the train and improve the stability of the train operation, and the central axis of the photonic crystal vibration isolation rings 2 is the same as the central axis of the outer shell 1, and the second damper block 4 can be mounted at the bottom of the outer shell 1 by vulcanization fixing, and the pressure plate assembly is mounted above the outer shell 1, the third damping block 11 is installed between the pressing plate component and the adjacent phononic crystal vibration isolation ring 2 in a vulcanization fixing mode, when the pressing plate component is pressed, the phononic crystal vibration isolation ring 2 descends along the central axis direction of the outer shell 1, and provides a buffering acting force for the phononic crystal vibration isolation ring 2 through the first damping block 3, the second damping block 4 and the third damping block 11 so as to improve the stability of the phononic crystal vibration isolation ring 2 in the descending process, when the phononic crystal vibration isolation ring 2 descends, the first damping block 3, the second damping block 4 and the third damping block 11 are respectively pressed and in a compression state, and provides a buffering acting force for the phononic crystal vibration isolation ring 2 so as to reduce the vibration generated in the running process of a train, when the phononic crystal vibration isolation ring 2 ascends, the first damping block 3, the second damping block 4 and the third damping block 11 restore to an initial state under the action of self elasticity, the stability of the train in the operation process is improved, the magnetic field generated by the first magnet 9 and the second magnet 10 is cut by the phononic crystal vibration isolation ring 2 in the lifting process, the damping force is generated by the phononic crystal vibration isolation ring 2 in the magnetic field cutting process, the train in the running process is damped again, the vibration of the train in the operation process is reduced, and the stability of the train in the operation process is improved.
In another embodiment of the present invention, a method for using a hybrid photonic crystal isolator is provided, wherein the method comprises the following steps: step S1, in an initial state, the first magnet 9 and the second magnet 10 interact to generate a magnetic field, and at the moment, the damping block 3 and the phononic crystal vibration isolation ring 2 are respectively in a static state; step S1, when the pressure plate component descends, the first damping block 3, the second damping block 4 and the third damping block 11 are compressed, the phononic crystal vibration isolation ring 2 descends, and simultaneously, the magnetic field is cut to form damping force; step S2, when the pressing plate assembly ascends, the first damping block 3, the second damping block 4, and the third damping block 11 recover to the initial state under the action of their own elastic forces, at this time, the phononic crystal vibration isolation ring 2 ascends, and at the same time, the cutting magnetic field forms a damping force.
In practical use, in order to further improve the damping efficiency of the phononic crystal vibration isolator, in an initial state, the first magnet 9 and the second magnet 10 interact with each other and generate a magnetic field, at this time, the first damping block 3, the second damping block 4, the third damping block 11 and the phononic crystal vibration isolation ring 2 are respectively in a static state, and the pressure plate assembly is in a static state; when the pressing plate assembly descends under the action of external force, the first damping block 3, the second damping block 4 and the third damping block 11 which are in a static state are compressed under the action of the pressure of the pressing plate assembly, the vibration generated by descending of the pressing plate assembly is reduced through the elastic action of the first damping block 3, the second damping block 4 and the third damping block 11, the photonic crystal vibration isolation ring 2 descends, in the descending process of the photonic crystal vibration isolation ring 2, a magnetic field generated between the first magnet 9 and the second magnet 10 is cut by the metal ball 6 embedded in the epoxy resin matrix 5, and in the process of cutting the magnetic field by the photonic crystal vibration isolation ring 2, a damping force opposite to the moving direction of the photonic crystal vibration isolation ring 2 is generated for reducing the vibration amplitude in the vertical direction; when the pressure applied to the pressing plate assembly is reduced or eliminated, the pressing plate assembly rises, the first damping block 3, the second damping block 4 and the third damping block 11 which are in a compressed state extend under the action of self elasticity and restore the initial state, a vertical upward elasticity is applied to the phononic crystal vibration isolation ring 2, the phononic crystal vibration isolation ring 2 moves upwards along the vertical direction, meanwhile, in the process of rising the phononic crystal vibration isolation ring 2, a metal ball 6 embedded in an epoxy resin matrix 5 cuts a magnetic field, a damping force is generated in the process of cutting the magnetic field, the vibration amplitude in the vertical direction is reduced, the metal ball 6 is arranged in the epoxy resin matrix 5 in a cubic lattice structure and used for isolating elastic waves, and in the process of up-and-down reciprocating motion of the phononic crystal vibration isolation ring 2, a first magnet 9 and a second magnet 10 are arranged on the outer wall of the phononic crystal vibration isolation ring 2, the magnetic field generated between the first magnet 9 and the second magnet 10 is cut by the metal ball 6 embedded in the epoxy resin matrix 5, the phononic crystal vibration isolation ring 2 generates damping force on the phononic crystal vibration isolation ring 2 by the magnetic field in the process of cutting the magnetic field, and meanwhile, the elastic damping effect of the first damping block 3, the second damping block 4 and the third damping block 11 is matched to form double damping, so that the damping efficiency is improved.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (9)
1. The utility model provides a combined type phononic crystal isolator, includes shell body (1), its characterized in that: the structure is characterized in that phononic crystal vibration isolation rings (2) are arranged in the outer shell (1), at least three groups of phononic crystal vibration isolation rings (2) are arranged and are parallel to each other, a first damping block (3) is arranged between every two adjacent phononic crystal vibration isolation rings (2), a second damping block (4) is arranged at the bottom of the outer shell (1), a magnet group is arranged between each phononic crystal vibration isolation ring (2) and the outer shell (1), a pressing plate assembly is arranged above the outer shell (1), and a third damping block (11) is arranged at the bottom of the pressing plate assembly; phononic crystal vibration isolation ring (2) includes epoxy base member (5), a plurality of metal spheroid (6) are installed to embedding in epoxy base member (5), and metal spheroid (6) overcoat is equipped with rubber layer (7), and a plurality of metal spheroid (6) are arranged with cubic lattice structure, epoxy base member (5) outer wall cladding has fastening layer (8) to make phononic crystal vibration isolation ring (2) receive pressure along shell body (1) axis rise or decline the in-process cutting by the magnetic field that the magnet group produced.
2. The compound phononic crystal isolator of claim 1, wherein: the magnet group comprises a first magnet (9) and a second magnet (10), the first magnet (9) and the second magnet (10) are arranged at intervals, opposite in heteropolar, and in central symmetry with the central axis of the outer shell (1), the first magnet (9) and the second magnet (10) are permanent magnets and arc-shaped petals.
3. The compound phononic crystal isolator of claim 1, wherein: the pressing plate assembly comprises a supporting plate (12), a bearing plate (13) is arranged at the bottom of the supporting plate (12), and the bearing plate (13) and the supporting plate (12) are respectively disc-shaped.
4. The compound photonic crystal vibration isolator of claim 2, wherein: the outer wall of the first magnet (9) is inconsistent with the inner wall of the outer shell (1), the outer wall of the second magnet (10) is inconsistent with the inner wall of the outer shell (1), and the phononic crystal vibration isolation ring (2) is movably arranged between the first magnet (9) and the second magnet (10).
5. The compound photonic crystal vibration isolator of claim 3, wherein: the diameter of the supporting plate (12) is the same as the outer diameter of the outer shell (1), and the diameter of the bearing plate (13) is between the diameter of the first damping block (3) and the diameter of the phononic crystal vibration isolation ring (2).
6. The compound phononic crystal isolator of claim 1, wherein: the first damping block (3), the second damping block (4) and the third damping block (11) are all cylindrical, and the central axes are the same.
7. The compound phononic crystal isolator of claim 1, wherein: the phononic crystal vibration isolation ring (2) and the first damping block (3) are respectively positioned on the central axis of the outer shell (1).
8. The compound phononic crystal isolator of claim 1, wherein: the outer shell (1) is cylindrical.
9. A method of using the composite photonic crystal vibration isolator according to any one of claims 1 to 8, the method comprising: step S1, in an initial state, the first magnet and the second magnet interact to generate a magnetic field, and at the moment, the damping block and the phononic crystal vibration isolation ring are respectively in a static state; step S2, when the pressure plate component descends, the first damping block, the second damping block and the third damping block are respectively compressed, the photonic crystal vibration isolation ring descends, a magnetic field is cut at the same time, and a damping force is formed on the photonic crystal vibration isolation ring; and step S3, when the pressure plate assembly rises, the first damping block, the second damping block and the third damping block restore to the initial state under the action of the elastic force of the first damping block, the second damping block and the third damping block, at the moment, the phononic crystal vibration isolation ring rises, and the magnetic field is cut.
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| CN202010712610.XA CN111853141B (en) | 2020-07-22 | 2020-07-22 | Combined phonon crystal vibration isolator |
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| CN112853825B (en) * | 2021-01-13 | 2022-04-26 | 华东交通大学 | Adjustable quasi-periodic damping steel rail |
| CN113074203B (en) * | 2021-03-15 | 2023-01-24 | 天津大学 | Vibration isolation device based on two-dimensional elastic wave metamaterial and particle collision damping |
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| US8833510B2 (en) * | 2011-05-05 | 2014-09-16 | Massachusetts Institute Of Technology | Phononic metamaterials for vibration isolation and focusing of elastic waves |
| CN104141722B (en) * | 2014-08-01 | 2016-03-02 | 哈尔滨工业大学 | The phonon crystal vibration isolator that a kind of Shape-based interpolation memory alloy band gap is adjustable |
| CN106894298B (en) * | 2017-01-10 | 2018-12-21 | 西南交通大学 | floating plate track vibration isolator |
| CN109780153B (en) * | 2019-01-24 | 2020-07-31 | 吉林大学 | Torsional vibration energy feedback device |
| CN110029533A (en) * | 2019-05-17 | 2019-07-19 | 西南交通大学 | A kind of track vibration isolator and track vibrating isolation system |
| CN110029534A (en) * | 2019-05-17 | 2019-07-19 | 西南交通大学 | A kind of floating plate track vibration isolator and floating plate track vibrating isolation system |
| CN110528340A (en) * | 2019-07-10 | 2019-12-03 | 西南交通大学 | Phonon crystal vibration isolator and floating plate track device for vibration insutation |
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