CN110528340A - Phonon crystal vibration isolator and floating plate track device for vibration insutation - Google Patents
Phonon crystal vibration isolator and floating plate track device for vibration insutation Download PDFInfo
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- CN110528340A CN110528340A CN201910621934.XA CN201910621934A CN110528340A CN 110528340 A CN110528340 A CN 110528340A CN 201910621934 A CN201910621934 A CN 201910621934A CN 110528340 A CN110528340 A CN 110528340A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
Abstract
The present invention provides a kind of phonon crystal vibration isolator and floating plate track device for vibration insutation, is related to device for vibration insutation field；The phonon crystal vibration isolator includes: multiple groups vibration isolation cellular；Multiple groups vibration isolation cellular is arranged along the direction of vibration of vibration source, and two adjacent groups vibration isolation cellular elastic connection；Vibration isolation cellular includes matrix component and at least two groups oscillator ring assemblies, and oscillator ring assemblies are sheathed in matrix component, and oscillator ring assemblies can be vibrated relative to matrix component, and the eigentone of every group of oscillator ring assemblies is all different.Elastic wave and the reversed resonance coupling of oscillator ring assemblies, the different oscillator ring assemblies of at least two groups intrinsic frequency are arranged on one group of vibration isolation cellular to connect with matrix component, so that the phonon crystal vibration isolator is corresponding to there is the band gap of at least two groups, therefore the frequency range for expanding the absorption elastic wave of phonon crystal vibration isolator, improves vibration isolating effect.Floating plate track device for vibration insutation includes above-mentioned phonon crystal vibration isolator.
Description
Technical field
The present invention relates to device for vibration insutation fields, and in particular to a kind of phonon crystal vibration isolator and floating plate track vibration isolation are set
It is standby.
Background technique
With social development, rail transport becomes one of most popular means of transportation, and solves to shake in rail traffic
Dynamic and the destruction of Noise upon Environment and the influence of resident living become the focus that people pay close attention to urban rail transit construction, also become city
City's urban rail transit construction can sustainable development one of key.By concentrating on studies for many years, Germany is in terms of vibration damping and vibration isolation
It takes the lead in making a breakthrough, they have made extensive work with application aspect in floating plate rail structure research, develop in succession a variety of floating
Set plate structure type and mating vibration isolating suspension and construction technology.The vibration isolation principle of floating plate rail structure are as follows: act on rail
On power pass to the road bed board being floated on vibration isolator, road bed board can provide enough inertia masses to offset vehicle and generate
Dynamic load, only dead load and a small amount of remaining dynamic load can be transmitted in blinding layer by elastic bearing.Road bed board by
After power, the power being subject to is passed to the vibration isolator being fixed on blinding layer under effect of inertia after redistributing, then lead to
It crosses vibration isolator and is transmitted to blinding layer, be tuned in the process by vibration isolator, filter, absorb energy, reach vibration isolation and damping
Purpose.
Phonon crystal is a kind of novel function formed in another solid or liquid medium by elastic solid (Hookean body) periodic arrangement
It can structure.When elastic wave is propagated in phonon crystal, by the effect of its internal structure, hindered in certain frequency range (band gap)
It only propagates, and can be propagated without loss in other frequency ranges (passband).Locally resonant type phonon crystal is phonon crystal knot
One of structure type.It is arranged in epoxy resin-base with silicon rubber package shot according to simple cubic lattice, constitutes office
The basic structure of domain resonance type phonon crystal.It, will be harder due to the presence of intermediate very soft clad in locally resonant structure
Core ball be connected on matrix, constitute the resonating member with low frequency.When the frequency for the elastic wave propagated in matrix is close to altogether
When the resonant frequency of vibration unit, with elastic wave strong coupling will occur for resonant structure unit, prevent it from continuing forward
It propagates, so as to cause the generation of band gap.
It is in the prior art there are it is a kind of using locally resonant type phonon crystal make vibration isolator, which is placed in
Under floating road bed board, when realizing vehicle and passing through track, the vibration isolator can absorb be transmitted to road bed board in band gap
The effect of elastic wave.However only there is a band gap, therefore vibration can only be absorbed in phonon crystal vibration isolator in the prior art
Elastic wave of the frequency in the frequency range of the band gap, and the vehicle start and stop due to rail traffic, acceleration and moderating process ratio
It is more complex, in addition the vibration frequency that vehicle is transmitted to the elastic wave of road bed board is not single, and exceeds as the influence of environmental load
The elastic wave of the bandgap frequency range can not be absorbed by the vibration isolator, can be directly transmitted to blinding layer, generate strenuous vibration and
Noise causes vibration isolating effect bad.So the single band gap of phonon crystal vibration isolator is often unable to satisfy actual condition demand.
Summary of the invention
It is existing to alleviate the purpose of the present invention is to provide a kind of phonon crystal vibration isolator and floating plate track device for vibration insutation
Vibration isolator band gap present in technology is single, and relatively narrow, and partial elastic wave can not be efficiently absorbed, and caused vibration isolating effect is bad
The problem of.
The present invention provides a kind of phonon crystal vibration isolator, comprising: multiple groups vibration isolation cellular；
Multiple groups vibration isolation cellular is arranged along the direction of vibration of vibration source, and two adjacent groups vibration isolation cellular elastic connection；
Vibration isolation cellular includes matrix component and at least two groups oscillator ring assemblies, and oscillator ring assemblies are sheathed in matrix component,
And oscillator ring assemblies can be vibrated relative to matrix component, the eigentone of every group of oscillator ring assemblies is all different.
When the frequency for the elastic wave that vibration source vibration generates is in the bandgap range of phonon crystal vibration isolator, elastic wave and vibration
The reversed resonance coupling of subring component, setting at least two groups intrinsic frequency different oscillator ring assemblies and matrix on one group of vibration isolation cellular
Component connection so that the phonon crystal vibration isolator is corresponding the band gap of at least two groups occurs, therefore expands phonon crystal vibration isolator
Absorption elastic wave frequency range, improve vibration isolating effect.
Further, oscillator ring assemblies include elastic adapter ring and oscillator ring；
Elastic adapter ring is sheathed on the outside of matrix component, and oscillator ring set is set on the outside of elastic adapter ring.Elastic adapter ring tool
There is the elasticity on direction of vibration, predominantly oscillator ring assemblies provide elastic potential energy, guarantee that oscillator ring assemblies can be issued in inertia
Raw vibration.Oscillator ring is mainly that oscillator ring assemblies provide quality, reaches control by the adjustment to elastic adapter ring and oscillator ring
The effect that oscillator ring assemblies intrinsic frequency changes.
Further, matrix component includes pedestal and elastomer block；Elastomer block and pedestal are arranged and are connected along vibration source direction of vibration
It connects, elastic adapter ring is sheathed on the outside of pedestal.Elastomer block and pedestal are attached on direction of vibration, on the one hand constitute local
The basic structure of resonance type phonon crystal；On the other hand the overall stiffness of entire phonon crystal vibration isolator is adjusted, in order to direct
Replace spring vibration-isolator in the prior art.
Further, pedestal has holding tank, and elastomer block is set in holding tank.The structure has loss of weight effect, another
Aspect ensure that elastomer block can connect previous group pedestal and later group pedestal, constitute the basic knot of locally resonant type phonon crystal
Structure.
Further, elastic adapter ring uses rubber ring.It is that rubber types are various using rubber ring purpose, elasticity system
Several ranges of choice is wider, preferably meets the requirement for adjusting oscillator ring assemblies.
Further, oscillator ring uses steel loop.Steel manufacturing cost is lower, and is capable of providing any quality of needs, with
Adjust the intrinsic frequency of oscillator ring assemblies.
Further, the interior ring-side wall cloth glue of rubber ring, and, the interior ring-side wall cloth glue of steel loop Nian Jie with pedestal lateral wall,
And it is Nian Jie with rubber ring.Rubber ring and pedestal and steel loop and rubber ring are connected by way of bonding.So that steel loop, rubber
What is be bonded between ring and pedestal is even closer, reduces because joint gap is influencing caused by oscillator ring assemblies.
Further, in multiple groups vibration isolation cellular, wherein the end face of the pedestal in one group of vibration isolation cellular and adjacent sets vibration isolation member
The end face of elastomer block in born of the same parents is bonded.Bonded structure ensure that patch prevents from bringing because of vibration with closely between each group vibration isolation cellular
Vibration isolation cellular between disengaging.
Further, the elastic connection in every group of vibration isolation cellular, including two groups of oscillator ring assemblies, in two groups of oscillator ring assemblies
The shearing rigidity of ring is identical, and two groups of oscillator ring assemblies vary in weight.The shearing rigidity of elastic adapter ring and the oscillator ring group
The ratio of part quality is directly proportional to the numerical value of the intrinsic frequency of oscillator ring assemblies, two groups of different oscillator ring assemblies of ratio it is intrinsic
Frequency is also different.Guarantee the phonon crystal vibration isolator tool band gap different there are two range, to expand its frequency for absorbing elastic wave
Rate range.
According to the present invention, a kind of floating plate track device for vibration insutation is provided, including above-mentioned phonon crystal vibration isolator.
Compared with prior art, possessed by phonon crystal vibration isolator and floating plate track device for vibration insutation provided by the invention
Technical advantage are as follows:
The present invention provides a kind of phonon crystal vibration isolator, comprising: multiple groups vibration isolation cellular；Vibration of the multiple groups vibration isolation cellular along vibration source
Dynamic direction arrangement, and the matrix component elastic connection in two adjacent groups vibration isolation cellular；Vibration isolation cellular includes matrix component and at least
Two groups of oscillator ring assemblies, oscillator ring assemblies are sheathed in matrix component, and oscillator ring assemblies can be vibrated relative to matrix component,
The eigentone of every group of oscillator ring assemblies is all different.In above structure, direction of vibration of the multiple groups vibration isolation cellular along vibration source
Arrangement, and two adjacent groups vibration isolation cellular elastic connection, oscillator ring assemblies are sheathed on collective's component, constitute locally resonant type sound
Sub- crystal vibration isolator.Vibration source vibration generates elastic wave, the oscillator ring assemblies of the phonon crystal vibration isolator can in certain frequency
The elastic wave reverse phase resonance coupling of (band gap), sponges elastic wave in range, to reach vibration isolation purpose.Because of locally resonant type
The action principle of phonon crystal vibration isolator is to rely on oscillator and elastic wave resonance coupling, and only reach the intrinsic frequency of oscillator
Plasmon resonance can be caused, so the phonon crystal vibration isolator can absorb the frequency range (band gap) of elastic wave with oscillator ring assemblies
Intrinsic frequency changes and changes.Therefore the different oscillator of setting at least two groups intrinsic frequency in the matrix component of single group vibration isolation cellular
Ring assemblies can make the phonon crystal vibration isolator have the distinguishing band gap of at least two frequency ranges.To expand the sound
The frequency range for the elastic wave that sub- crystal vibration isolator can absorb promotes vibration isolating effect.
Floating plate track device for vibration insutation provided by the invention, including above-mentioned phonon crystal vibration isolator, as a result, floating plate track
The advantage of device for vibration insutation includes the advantage of phonon crystal vibration isolator, is repeated no more.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of phonon crystal vibration isolator provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the section structure of phonon crystal vibration isolator provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the vibration isolation cellular of phonon crystal vibration isolator provided in an embodiment of the present invention；
Fig. 4 is the configuration schematic diagram of the vibration isolation cellular of phonon crystal vibration isolator provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of spring mass block models provided in an embodiment of the present invention；
Fig. 6 is mass block provided in an embodiment of the present invention-spring mass block models structural schematic diagram.
Icon: 100- vibration isolation cellular；110- matrix component；111- pedestal；112- elastomer block；120- oscillator ring group
Part；121- elastic adapter ring；122- oscillator ring；The first mass block of 200-；The second mass block of 300-.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention is described in further detail below by specific embodiment and in conjunction with attached drawing.
Specific structure is as shown in figs 1 to 6.
A kind of phonon crystal vibration isolator provided in this embodiment, according to Fig. 1-Fig. 6, comprising: multiple groups vibration isolation cellular
100；
Multiple groups vibration isolation cellular 100 is arranged along the direction of vibration of vibration source, and 100 elastic connection of two adjacent groups vibration isolation cellular；
Vibration isolation cellular 100 includes matrix component 110 and at least two groups oscillator ring assemblies 120, and oscillator ring assemblies 120 are sheathed on
In matrix component 110, and oscillator ring assemblies 120 can be vibrated relative to matrix component 110, and every group of oscillator ring assemblies 120 are consolidated
There is vibration frequency to be all different.
In above structure, multiple groups vibration isolation cellular 100 is arranged along the direction of vibration of vibration source, and two adjacent groups vibration isolation cellular 100
Elastic connection, oscillator ring assemblies 120 are sheathed on collective's component, constitute locally resonant type phonon crystal vibration isolator.Vibration source vibration
Movable property gives birth to elastic wave, and the oscillator ring assemblies 120 of the phonon crystal vibration isolator can be with the bullet of within the scope of certain frequency (band gap)
Property wave reverse phase resonance coupling, sponges elastic wave, to reach vibration isolation purpose.Because locally resonant type phonon crystal vibration isolator
Action principle is to rely on oscillator and elastic wave resonance coupling, and the intrinsic frequency for only reaching oscillator can just cause plasmon resonance,
So the frequency range (band gap) that the phonon crystal vibration isolator can absorb elastic wave changes with the intrinsic frequency of oscillator ring assemblies 120
And change.Therefore the different oscillator ring assemblies of setting at least two groups intrinsic frequency in the matrix component 110 of single group vibration isolation cellular 100
120, it can make the phonon crystal vibration isolator that there is the distinguishing band gap of at least two frequency ranges.To expand phonon crystalline substance
The frequency range for the elastic wave that body vibration isolator can absorb promotes vibration isolating effect.
It should be noted that the principle of the elastic wave in the absorption bandgap range of locally resonant type phonon crystal, effect with
And the specific structure of locally resonant type phonon crystal can refer to the prior art.
In addition, single group vibration isolation cellular 100 is reduced to for the vivider vibration isolation principle for illustrating the phonon crystal vibration isolator
Wire spring-quality block models.As shown in figure 5, according to the principle of locally resonant type phonon crystal, under the action of elastic wave, when
Antiphase resonance occurs under intrinsic frequency with elastic wave for oscillator ring assemblies 120, and matrix component 110 hardly happens vibration
When, total realizes dynamic equilibrium under such vibration mode, and the initial frequency of band gap is the vibration of oscillator ring assemblies 120 at this time
Dynamic frequency.Wherein, the quality of oscillator ring assemblies 120 is equivalent to the quality (m of the first mass block 200x), oscillator ring assemblies 120
Shear stiffness is equivalent to the coefficient of elasticity (k) of spring, resonant frequency, that is, band gap initial frequency of oscillator ring assemblies 120, quite
In the free simple harmonic motion frequency (f of spring mass block models1), according to the first mass block 200 in spring mass block models
Free simple harmonic motion frequency formulaIt is found that the shear stiffness (k) of oscillator ring assemblies 120 and oscillator ring assemblies
120 quality (mx) ratio it is directly proportional to the initial frequency of phonon crystal vibration isolator band gap, by locally resonant type phonon crystal
Principle it is found that the initial frequency of the phonon crystal vibration isolator band gap is equal with the inherent frequency numerical value of oscillator ring assemblies 120, because
As long as this guarantees that the intrinsic frequency difference of oscillator ring assemblies 120 can be obtained the starting frequency of different phonon crystal vibration isolator band gap
Rate.
As shown in fig. 6, building mass block-spring mass block model, according to the original of locally resonant type phonon crystal
Reason, oscillator ring assemblies 120 are sheathed in matrix component 110, under the action of elastic wave, when matrix component 110 is vibrated, and and oscillator
When occurring antiphase resonance between ring assemblies 120 and matrix component 110, vibration frequency at this time is phonon crystal vibration isolator band gap
Cutoff frequency.The quality of oscillator ring assemblies 120 is equivalent to the quality (m of 200 mass block of the first mass blockx), matrix component 110
Quality be equivalent to the quality (m) of the second mass block 300, the shear stiffness of oscillator ring assemblies 120 is equivalent to the elasticity system of spring
Number (k), it is freely reversed to be equivalent to two mass blocks for antiphase resonant frequency between oscillator ring assemblies 120 and matrix component 110
Resonant frequency (the f of resonance2), according to mass block-spring mass block model, what two mass blocks freely reversely resonated
Resonant frequency formulaIt is found that changing the intrinsic frequency of oscillator ring assemblies 120, oscillator ring assemblies 120
Quality (mx) and/or the shear stiffness (k) of oscillator ring assemblies 120 it is i.e. changeable, and oscillator ring assemblies 120 and matrix component
Antiphase resonant frequency also can be with its change, so that the cutoff frequency of phonon crystal vibration isolator band gap can also change between 110.
In conclusion changing the intrinsic frequency of oscillator ring assemblies 120, the starting frequency of phonon crystal vibration isolator band gap can be caused
Rate and cutoff frequency variation variation, to cause the change of bandgap range.
In the optional technical solution of the present embodiment, oscillator ring assemblies 120 include elastic adapter ring 121 and oscillator ring 122；
Elastic adapter ring 121 is sheathed on 110 outside of matrix component, and oscillator ring 122 is sheathed on 121 outside of elastic adapter ring.
Elastic adapter ring 121 has the elasticity on direction of vibration, and predominantly oscillator ring assemblies 120 provide elastic potential energy, guarantee in elasticity
When wave is transmitted to matrix component 110, the elasticity using elastic adapter ring 121 of oscillator ring assemblies 120 can occur under inertia
Vibration.Oscillator ring 122 is mainly that oscillator ring assemblies 120 provide quality, passes through the tune to elastic adapter ring 121 and oscillator ring 122
It is whole to achieve the effect that controlling 120 intrinsic frequency of oscillator ring assemblies changes.
In the optional technical solution of the present embodiment, matrix component 110 includes pedestal 111 and elastomer block 112；Elastomer block 112
It arranges and connect along vibration source direction of vibration with pedestal 111, elastic adapter ring 121 is sheathed on 111 outside of pedestal.On the one hand it constitutes
The basic structure of locally resonant type phonon crystal；On the other hand, pedestal 111 and elastomer block 112 are cooperatively connected, and provide for road bed board
Vertical stiffness and certain lateral stiffness support road bed board, prevent it from collapsing.Meanwhile there is certain bullet using elastomer block 112
Property decrement characteristic, in actual use can directly with phonon crystal vibration isolator provided in this embodiment replace it is existing
Spring vibration-isolator, the decrement for simulating spring vibration-isolator are directly replaced, and without making rectification to track, make to replace
Journey is more convenient.
Preferably, said base 111 selects aluminum alloy materials, 112 rubber block of elastomer block；Aluminium alloy ensure that pedestal 111
With good structural strength, and aluminium alloy belongs to light metal, has good weight loss effect to the phonon crystal vibration isolator,
And aluminium alloy is common metal alloy material, and it is easy to process, it is cheap.Rubber block is capable of providing required for elastomer block 112
Elasticity, and it is easy to process, it is cheap.
In the optional technical solution of the present embodiment, pedestal 111 has holding tank, and elastomer block 112 is set in holding tank.It should
Accommodating slot structure has loss of weight effect, reduces the weight of pedestal 111；On the other hand elastomer block 112 is made to be in enclosing for pedestal 111
Under shield, prevent it from generating transversely deforming because of vibration-extrusion.Preferably, 111 bottom of pedestal have bulge-structure, previous group every
The bulge-structure of the pedestal 111 of vibration cellular 100 can be with the elastomer block in 111 holding tank of pedestal of later group vibration isolation cellular 100
112 abut, and ensure that elastomer block 112 can connect previous group pedestal 111 and later group pedestal 111, constitute locally resonant type sound
The basic structure of sub- crystal.
Preferably, pedestal 111 uses cylindrical-shaped structure, and top opens up holding tank, and cylindrical-shaped structure is easy to process, while side
Just oscillator ring assemblies 120 are socketed.Cylindrical-shaped structure Mass Distribution is uniform, when carrying out vibration isolation work, matches with oscillator ring assemblies 120
It closes, transmitting vibration is more uniform, so that phonon crystal vibration isolator is more stable.
In the optional technical solution of the present embodiment, elastic adapter ring 121 uses rubber ring.It is using rubber ring purpose,
Rubber types are various, and the range of choice of coefficient of elasticity is wider, preferably meet the requirement for adjusting oscillator ring assemblies 120.And rubber
Material is relatively conventional, easy to process.
In the optional technical solution of the present embodiment, oscillator ring 122 uses steel loop.Steel loop can satisfy needed for oscillator ring 122
Quality requirement, steel manufacturing cost is lower, and is capable of providing any quality of needs, is conveniently adjusted oscillator ring assemblies 120
Intrinsic frequency.
In the optional technical solution of the present embodiment, the interior ring-side wall cloth glue of rubber ring, and it is Nian Jie with 111 lateral wall of pedestal,
The interior ring-side wall cloth glue of steel loop, and it is Nian Jie with rubber ring.Rubber ring and pedestal 111 and steel loop are connected by way of bonding
With rubber ring.So that be bonded between steel loop, rubber ring and pedestal 111 it is even closer, reduce because joint gap is to oscillator group
Part influences caused by vibrating.
In the optional technical solution of the present embodiment, in multiple groups vibration isolation cellular 100, wherein the base in one group of vibration isolation cellular 100
The end face of seat 111 is Nian Jie with the end face of elastomer block 112 in adjacent sets vibration isolation cellular 100.Bonded structure ensure that each group vibration isolation
Patch is prevented with closely because vibrating the disengaging between bring vibration isolation cellular 100 between cellular 100.
In the optional technical solution of the present embodiment, in every group of vibration isolation cellular 100, including two groups of oscillator ring assemblies 120, two groups
The shearing rigidity of elastic adapter ring 121 in oscillator ring assemblies 120 is identical, and two groups of oscillator ring assemblies 120 vary in weight.
The shearing rigidity of oscillator ring assemblies 120 is mainly reflected by the shearing rigidity of elastic adapter ring 121.According to the initial frequency of band gapIt is found that in every group of vibration isolation cellular 100, shearing rigidity (k) the i.e. elastic adapter ring of each group oscillator ring assemblies 120
121 shearing rigidity, with 120 mass (m of oscillator ring assembliesx) ratio it is different, then each group oscillator ring assemblies 120 can be total to
The initial frequency coupled of shaking is different.According to the cutoff frequency of band gapIt is found that single vibration isolation cellular
In 100, the shearing rigidity difference or oscillator ring group of the shearing rigidity (k) i.e. of each group oscillator ring assemblies 120 elastic adapter ring 121
120 mass (m of partx) different, then the cutoff frequency for capableing of resonance coupling of each group oscillator ring assemblies 120 is different.Specifically, In
In same vibration isolation cellular 100, two groups of oscillator ring assemblies 120 respectively the first oscillator ring assemblies and the second oscillator ring assemblies are defined,
And first oscillator ring assemblies include the first elastic adapter ring and the first oscillator ring；Second oscillator ring assemblies include the second elastic connection
Ring and the second oscillator ring；Wherein, the shearing rigidity of the first elastic adapter ring is k1, the shearing rigidity of the second elastic adapter ring is k2,
The quality of first oscillator ring is m1, the quality of the second oscillator ring is m2.Preferred embodiment is that the constant mass of matrix component 110 is m,It is greater thanAnd k1With k2It is equal, m1Less than m2, bring f into1With f2In it is found that the initial frequency of the first oscillator ring assemblies with
Cutoff frequency is all larger than the second oscillator ring assemblies, and therefore, the band gap of the first oscillator ring assemblies and the second oscillator ring assemblies is superimposed
Band gap width is increased, so that the band gap width of phonon crystal vibration isolator increases, improves vibration isolating effect.The preferred embodiment
In, the first elastic adapter ring is equal with the shearing rigidity of the second elastic adapter ring, therefore same elastic adapter ring can be used, and only leads to
It crosses so that the quality difference of the first oscillator ring and the second oscillator ring can achieve the goal, it is simple and convenient, and without considering elasticity even
Connect the variation of the parameters such as quality caused by the change of 121 material of ring.
In addition, following scheme also can be used, the constant mass of matrix component 110 is m,It is greater thanAnd k1、m1Point
It great Yu not k2、m2, bring f into1With f2In it is found that the first oscillator ring assemblies initial frequency and cutoff frequency be all larger than the second oscillator
Ring assemblies, therefore, the band gap of the first oscillator ring assemblies and the second oscillator ring assemblies is superimposed to increase band gap width, so that
The band gap width of phonon crystal vibration isolator increases, and improves vibration isolating effect.
The present embodiment also provides a kind of floating plate track device for vibration insutation, including above-mentioned phonon crystal vibration isolator.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of phonon crystal vibration isolator characterized by comprising multiple groups vibration isolation cellular (100)；
Vibration isolation cellular (100) described in multiple groups is arranged along the direction of vibration of vibration source, and the elasticity of vibration isolation cellular (100) described in two adjacent groups
Connection；
The vibration isolation cellular (100) includes matrix component (110) and at least two groups oscillator ring assemblies (120), the oscillator ring group
Part (120) is sheathed on described matrix component (110), and the oscillator ring assemblies (120) can be relative to described matrix component
(110) it vibrates, the eigentone of oscillator ring assemblies (120) described in every group is all different.
2. phonon crystal vibration isolator according to claim 1, which is characterized in that the oscillator ring assemblies (120) include bullet
Property connection ring (121) and oscillator ring (122)；
The elastic adapter ring (121) is sheathed on the outside of described matrix component (110), and the oscillator ring (122) is sheathed on described
On the outside of elastic adapter ring (121).
3. phonon crystal vibration isolator according to claim 2, which is characterized in that described matrix component (110) includes pedestal
(111) and elastomer block (112)；The elastomer block (112) is arranged and is connect along vibration source direction of vibration with the pedestal (111), institute
Elastic adapter ring (121) is stated to be sheathed on the outside of the pedestal (111).
4. phonon crystal vibration isolator according to claim 3, which is characterized in that the pedestal (111) has holding tank, institute
Elastomer block (112) is stated to be set in holding tank.
5. phonon crystal vibration isolator according to claim 3, which is characterized in that the elastic adapter ring (121) uses rubber
Rubber ring.
6. phonon crystal vibration isolator according to claim 5, which is characterized in that the oscillator ring (122) uses steel loop.
7. phonon crystal vibration isolator according to claim 6, which is characterized in that the interior ring-side wall cloth glue of the rubber ring,
And, the interior ring-side wall cloth glue of the steel loop Nian Jie with the pedestal (111) lateral wall, and it is Nian Jie with the rubber ring.
8. the phonon crystal vibration isolator according to any one of claim 3-7, which is characterized in that vibration isolation described in multiple groups
In cellular (100), wherein vibration isolation described in the end face of the pedestal (111) in vibration isolation cellular (100) described in one group and adjacent sets
The end face of the elastomer block (112) in cellular (100) is bonded.
9. the phonon crystal vibration isolator according to any one of claim 2-7, which is characterized in that vibration isolation described in every group
In cellular (100), including oscillator ring assemblies (120) described in two groups, the elasticity in oscillator ring assemblies (120) described in two groups is even
The shearing rigidity for connecing ring (121) is identical, and oscillator ring assemblies (120) described in two groups vary in weight.
10. a kind of floating plate track device for vibration insutation, which is characterized in that including phonon described in any one of claim 1-9
Crystal vibration isolator.
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| CN111692261A (en) * | 2020-06-19 | 2020-09-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Wide forbidden band efficient vibration isolation structure |
| CN111853141A (en) * | 2020-07-22 | 2020-10-30 | 四川大学 | Combined phonon crystal vibration isolator |
| CN111877058A (en) * | 2020-08-12 | 2020-11-03 | 中南大学 | Floating plate track vibration isolator device based on three-dimensional phononic crystal |
| CN113322798A (en) * | 2021-07-09 | 2021-08-31 | 成都地铁运营有限公司 | Bridge damping support based on phonon crystal theory |
| CN114481718A (en) * | 2022-03-02 | 2022-05-13 | 西南交通大学 | Floating slab track vibration isolator integrating particle damping vibration absorption and band gap vibration damping |
| CN114673034A (en) * | 2022-03-16 | 2022-06-28 | 西南交通大学 | Acoustic crystal vibration isolator based on acoustic black hole trap mechanism |
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| CN111853141A (en) * | 2020-07-22 | 2020-10-30 | 四川大学 | Combined phonon crystal vibration isolator |
| CN111877058A (en) * | 2020-08-12 | 2020-11-03 | 中南大学 | Floating plate track vibration isolator device based on three-dimensional phononic crystal |
| CN113322798A (en) * | 2021-07-09 | 2021-08-31 | 成都地铁运营有限公司 | Bridge damping support based on phonon crystal theory |
| CN114481718A (en) * | 2022-03-02 | 2022-05-13 | 西南交通大学 | Floating slab track vibration isolator integrating particle damping vibration absorption and band gap vibration damping |
| CN114673034A (en) * | 2022-03-16 | 2022-06-28 | 西南交通大学 | Acoustic crystal vibration isolator based on acoustic black hole trap mechanism |
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