CN106678233A - Novel active absorber based on PZT (piezoelectric ceramic) - Google Patents
Novel active absorber based on PZT (piezoelectric ceramic) Download PDFInfo
- Publication number
- CN106678233A CN106678233A CN201611100874.XA CN201611100874A CN106678233A CN 106678233 A CN106678233 A CN 106678233A CN 201611100874 A CN201611100874 A CN 201611100874A CN 106678233 A CN106678233 A CN 106678233A
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- China
- Prior art keywords
- pzt
- metal
- rubber block
- tile fragment
- outer shaft
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Classifications
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a novel absorber based on PZT (piezoelectric ceramic). The novel absorber comprises an outer shaft sleeve, elastic structures, tile blocks, PZT and a metal rubber block, wherein the outer shaft sleeve, the elastic structures and the tile blocks are of an integrated structure; the outer shaft sleeve and the tile blocks are in flexible connection through the middle elastic structures; the elastic structures and PZT are circumferentially distributed between the tile blocks and the outer shaft sleeve; grooves are designed in the middle parts of the elastic structures; PZT is placed in the grooves; the metal rubber block is mounted in the grooves in the two sides of PZT and the elastic structures; and the metal rubber block and PZT are in parallel connection and support the tile blocks. The novel absorber provided by the invention has the characteristics that bearing capacity is high, rigidity is high, damping is high, damping characteristics can be actively controlled, and the like.
Description
Technical field
The present invention relates to antivibration area, and in particular to new active damper of the one kind based on PZT (piezoelectric ceramics).
Background technology
Based on the new active damper of PZT be it is a kind of can active control its damping characteristic vibroshock.In the vibroshock
Tile fragment and outer shaft are an entirety, are linked together by elastic construction, and the embedded PZT in centre is formed with two ends metal-rubber block
Parallel-connection structure is used as support.Compared with General Purpose Rubber vibroshock, it has, and bearing capacity is high, damp big, controllable damping characteristic
The advantages of.Compared with traditional rubber shock absorber, can control PZT and adjust metal-rubber block deformation space, show different resistances
Damping characteristics.According to the amplitude and the difference of angle of tile fragment excited target, adjusting the signal of telecommunication of PZT makes vibroshock show preferably suction
Shake effect.Active damper based on PZT has broad application prospects in the rotating machineries such as steam turbine, centrifuge.
, by being deformed realizing effectiveness in vibration suppression, its damping characteristic is constant and props up for rubber in traditional rubber shock absorber
Support rigidity is little.The present invention PZT is introduced in vibroshock, PZT be it is a kind of can be by mechanical energy and the information work(of the mutual phase transformation of electric energy
Can ceramic material.When voltage acts on PZT, mechanically deform will be produced with the change of voltage and frequency；And work as piezoelectric ceramics
During generation mechanically deform, then electric charge can be produced, export the signal of telecommunication.It can be controlled by controlling the power supply signal of PZT with measured
Mechanically deform.But PZT has larger support stiffness but damping is not obvious.Metal-rubber is by spiral helicine tinsel
Specific shape is pressed into by cold punching technology, it is made of metal the elasticity with rubber, metal-rubber is being subject to
Phase mutual friction consumes substantial amounts of energy between inner wire during outside exciting, so as to play the effect of vibration damping, thus metal rubber
Glue has preferable damping characteristic.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, and one kind is provided there is PZT and metal-rubber block
Resilient tile block structured active damper is supported, support stiffness, the damping characteristic of control structure of structure is improved, makes the vibroshock can
Tile fragment is adjusted according to the amplitude of excitation and the different active control PZT signals of telecommunication of angle, more excellent damping characteristic is shown, is realized
More preferable effectiveness in vibration suppression.
In order to achieve the above object, the present invention is employed the following technical solutions：Based on the new active damper of PZT, including：
Outer shaft, PZT, elastic support structure, tile fragment and metal-rubber block, the PZT between elastic support structure, the metal rubber
Blob of viscose is in elastic support structure and PZT both sides.
Further, the outer shaft, elastic support structure and tile fragment are integral type structure.
Further, in the middle of the elastic construction and it is respectively provided on two sides with groove.
Further, the PZT is embedded among the groove in the middle of elastic construction, and signal transmssion line is by logical on outer shaft
Stretch out or stretched out by the through hole on the metal-rubber block of both sides in hole.
Further, the PZT numbers are identical with tile fragment number, supported by two elastic structures and one PZT in centre
One tile fragment.
Further, the metal-rubber block suppresses camber by spiral helicine tinsel, in filling in the groove at tile fragment two ends.
Further, the PZT numbers can be differed with tile fragment number, by two PZT and a middle elastic structure
Support a tile fragment.
The technical solution adopted in the present invention has the advantages that：New active based on PZT proposed by the present invention
Vibroshock, by being introduced into the groove that PZT is embedded it between two elastic structures in, PZT supports tile fragment, elastic construction
Body forms rebound effect to tile fragment.So the metal-rubber block of both sides and PZT form the structure of support tile fragment in parallel.Due to PZT
With larger support stiffness, the metal-rubber block of Low rigidity relative with both sides is in parallel, and the support that improve new type vibration isolator is firm
Degree.Due to PZT be it is a kind of can be by mechanical energy and the informational function ceramic material of the mutual phase transformation of electric energy, can be according to power supply signal control
Its mechanically deform amount is made, the control to tile fragment mechanically deform is realized.So can be judged to shake according to the situation of change of the PZT signals of telecommunication
The direction of dynamic excitation and size, the size and frequency for controlling the signal of telecommunication of each PZT controls respectively the mechanically deform size of tile fragment,
The mechanically deform of tile fragment forms the excitation to metal-rubber block.Due to metal-rubber when by outside exciting inner wire it
Between phase mutual friction consume substantial amounts of energy, so as to play the effect of vibration damping.Dividing for control tile fragment mechanically deform can so be passed through
Cloth, makes metal-rubber block preferably play effectiveness in vibration suppression.Therefore under the collective effect of PZT and metal-rubber block, the present invention is carried
The vibroshock for going out have high bearing capacity, high rigidity, high-damping, can active control damping characteristic the features such as.
Description of the drawings
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is explosive view of the present invention；
Fig. 3 is axle sleeve structure schematic diagram of the present invention；
Fig. 4 is axle sleeve cross section of the present invention and sectional view；
Fig. 5 is PZT structural representations of the present invention；
Fig. 6 is metal-rubber block cross section of the present invention and sectional view；
Fig. 7 is new type vibration isolator schematic diagram of another structure of the invention based on PZT；
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.However it will be appreciated that
It is that following specific embodiments are only the preferred technical solution of the present invention, and should not be construed limitation of the present invention.
As shown in figure 1, the new active damper based on PZT includes outer shaft 2, elastic structure 4, tile fragment 5, PZT 3
Constitute with metal-rubber block 1.The outer shaft 2, elastic structure 4, tile fragment 5 are integral type structure.The PZT 3 is embedded in two
In groove between individual elastic structure 4, described metal-rubber block 1 is arranged in grooves on two sides, and parallel connection together is supported watt
Block 5.
As shown in figure 4, axle sleeve is formed by numerical control mill and Wire-cut Electrical Discharge Machining, the thickness of elastic construction determines bullet
The resilience rigidity of property structure.The radian θ and bearing length L of tile fragment determine the size in loading ability of bearing region, and the thickness δ of tile fragment determines
The torsional rigidity of tile fragment is determined, tile fragment number is n.Elastic structure intermediate groove length Lj, width a, high h, PZT 3 shown in Fig. 5
Fixed by way of interference fit wherein, the signal of telecommunication control line of PZT 3 is stretched out by two through holes on outer shaft.Elasticity
Jing R in the groove of structure both sidesi, external diameter Ro, long Lm.Spiral helicine tinsel is pressed into shown in Fig. 6 by cold punching technology
The metal-rubber block of structure, in being plunged into the groove of the elastic structure left and right sides.It is long by the physical dimension for adjusting PZT 3
Degree Lj, width a, high h can obtain different support stiffness.Adjusting the physical dimension of metal-rubber block 1 can obtain different dampings spies
Property.The signal of telecommunication size produced further according to vibrational excitation PZT 3 calculates the size and Orientation of vibrational excitation, and then electric to PZT3
Signal is controlled makes it produce different mechanically deforms, controls the relative motion of each tile fragment 5, final control metal-rubber block
1 deformation region distribution, improves the energy dissipation on vibrational excitation direction.
Except example set forth above, damper elastomeric structure 4 and PZT 3 can have other different distribution forms.
Vibroshock shown in Fig. 7, elastic structure 4 and PZT 3 support tile fragment with different distribution forms.Using two Hes of PZT 3
A middle elastic structure 4 supports a tile fragment, and the signal of telecommunication control line of PZT 3 is by the through hole on metal-rubber block 1
Pass.Additionally, the planform of vibroshock metal-rubber block 1 and PZT 3 can be designed as the case may be.Reality provided above
Example be only the present invention preferred embodiment, as long as according to the claims in the present invention and present specification made it is simple equivalent
Change and modification, should all belong to the scope that patent of the present invention is covered.
Claims (5)
1. it is a kind of that there is PZT (piezoelectric ceramics) and metal-rubber block to support resilient tile block structured active damper, its feature to exist
In, including：Outer shaft (2), tile fragment (5), elastic construction (4), PZT (3), metal-rubber block (1).It is characterized in that, PZT (3) peaces
Be mounted in the rectangular channel between tile fragment (5) and outer shaft (2), elastic construction (4) and PZT (3) be circumferentially distributed in tile fragment (5) with it is outer
Between axle sleeve (2), metal-rubber block (1) is arranged in the both sides of PZT (3) and elastic construction (4).
2. according to claim 1 to support resilient tile block structured active damper with PZT and metal-rubber block, it is special
Levying is, tile fragment (5) and the outer shaft (2) of the vibroshock are structure as a whole, and tile fragment (5) is with outer shaft (2) by elastic construction
(4) connect.Vibroshock radius is R, and axial length is L, tile fragment number be n, radian be θ, thickness be δ, tile fragment (5) axial length
It is equal with outer shaft (2) axial length, equal to L.Middle spring structure (4) axial length be Lj, elastic construction (4) axial direction
It is Lm that respectively there is a groove length both sides.There are a pair of grooves between tile fragment and outer shaft, the width of groove is a, two groove tip spacings
h。
3. it is according to claim 1 to support resilient tile block structured active damping with piezoelectric ceramic piece and metal-rubber block
Device, is characterized in that, in the groove on elastic constructions (4) of the PZT (3) between tile fragment (5) and outer shaft (2), its power supply
Line is stretched out by the through hole on both sides outer shaft (2), it is also possible to stretched out by the through hole on both sides metal-rubber block (1).PZT
(3) a length of Ld, a width of a, a height of h is equal with the wide and height of mounting groove respectively.
4. according to claim 1 to support resilient tile block structured active damper with PZT and metal-rubber block, it is special
Levying is, it can also be ring-shaped rubber block that metal-rubber block (1) is the compacting of spiral helicine tinsel and circularizes, and fill in tile fragment (5)
And the groove of outer shaft (2) between, metal-rubber block (1) support tile fragment structure in parallel with PZT (3) is formed.Metal-rubber block (1)
Internal diameter be Ri, external diameter be Ro, axial length be Lm.
5. resilient tile block structured is supported actively with piezoelectric ceramic piece and metal-rubber block according to Claims 1-4
Vibroshock, is characterized in that PZT (3) is in parallel with metal-rubber block (1) and supports tile fragment (5) structure, tile fragment number and piezoelectric ceramics
Piece number can be with unequal.Can be that two elastic constructions (4) and a middle PZT (3) support one piece watt, or two
PZT (3) and a middle elastic construction (4) support one piece of shoe into tile fragment and elastic construction different distributions form structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100874.XA CN106678233A (en) | 2016-12-05 | 2016-12-05 | Novel active absorber based on PZT (piezoelectric ceramic) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100874.XA CN106678233A (en) | 2016-12-05 | 2016-12-05 | Novel active absorber based on PZT (piezoelectric ceramic) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678233A true CN106678233A (en) | 2017-05-17 |
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ID=58867428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611100874.XA Pending CN106678233A (en) | 2016-12-05 | 2016-12-05 | Novel active absorber based on PZT (piezoelectric ceramic) |
Country Status (1)
| Country | Link |
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| CN (1) | CN106678233A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980247A (en) * | 2017-06-02 | 2018-12-11 | 杭州海康威视数字技术股份有限公司 | A kind of rubber absorbers for hard disk vibration damping |
| CN110480675A (en) * | 2019-08-28 | 2019-11-22 | 王光远 | A kind of piezoelectric type variation rigidity elastic joint |
| CN110966330A (en) * | 2018-09-30 | 2020-04-07 | 上海微电子装备（集团）股份有限公司 | Combined reed, design method thereof and motion platform |
Citations (5)
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|---|---|---|---|---|
| US5823307A (en) * | 1994-04-04 | 1998-10-20 | Technical Manufacturing Corporation | Stiff actuator active vibration isolation system |
| JP2003074550A (en) * | 2001-09-05 | 2003-03-12 | Mitsubishi Heavy Ind Ltd | Foil gas bearing |
| CN101225853A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Dynamical pressure gas elasticity foil tablet bearing with stability self-adaptive control function |
| CN103438091A (en) * | 2013-08-02 | 2013-12-11 | 湖南大学 | Aero dynamic bearing with metal rubber and elastic chaff composite support structure |
| CN104454992A (en) * | 2014-09-30 | 2015-03-25 | 湖南大学 | Elastic radial air bearing |
-
2016
- 2016-12-05 CN CN201611100874.XA patent/CN106678233A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5823307A (en) * | 1994-04-04 | 1998-10-20 | Technical Manufacturing Corporation | Stiff actuator active vibration isolation system |
| JP2003074550A (en) * | 2001-09-05 | 2003-03-12 | Mitsubishi Heavy Ind Ltd | Foil gas bearing |
| CN101225853A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Dynamical pressure gas elasticity foil tablet bearing with stability self-adaptive control function |
| CN103438091A (en) * | 2013-08-02 | 2013-12-11 | 湖南大学 | Aero dynamic bearing with metal rubber and elastic chaff composite support structure |
| CN104454992A (en) * | 2014-09-30 | 2015-03-25 | 湖南大学 | Elastic radial air bearing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980247A (en) * | 2017-06-02 | 2018-12-11 | 杭州海康威视数字技术股份有限公司 | A kind of rubber absorbers for hard disk vibration damping |
| CN110966330A (en) * | 2018-09-30 | 2020-04-07 | 上海微电子装备（集团）股份有限公司 | Combined reed, design method thereof and motion platform |
| CN110480675A (en) * | 2019-08-28 | 2019-11-22 | 王光远 | A kind of piezoelectric type variation rigidity elastic joint |
| CN110480675B (en) * | 2019-08-28 | 2021-03-30 | 王光远 | Piezoelectric type variable-rigidity elastic joint |
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Application publication date: 20170517 |
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