CN110107643A - A kind of array transverse direction negative stiffness vibration absorber - Google Patents
A kind of array transverse direction negative stiffness vibration absorber Download PDFInfo
- Publication number
- CN110107643A CN110107643A CN201910337350.XA CN201910337350A CN110107643A CN 110107643 A CN110107643 A CN 110107643A CN 201910337350 A CN201910337350 A CN 201910337350A CN 110107643 A CN110107643 A CN 110107643A
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- China
- Prior art keywords
- magnetic patch
- negative stiffness
- vibration damping
- movable plate
- minor structure
- Prior art date
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- 239000006096 absorbing agent Substances 0.000 title claims description 12
- 238000013016 damping Methods 0.000 claims abstract description 49
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 230000010355 oscillation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- 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
-
- 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
- F16F15/023—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 fluid means
-
- 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
-
- 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
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention discloses a kind of array transverse direction negative stiffness every subtracting device, including left movable plate, vibration damping minor structure and right fixed plate composition；The left movable plate is mounted on basic machine；The vibration damping minor structure is arranged between left movable plate and right fixed plate, including negative stiffness unit, positive rigidity unit and hydraulic damping bar, the linear array spacings of vibration damping minor structure are vertically arranged；The right fixed plate is connected in ground；The structural vibration control of wide frequency range may be implemented by adjusting vibration damping minor structure rigidity and damping.
Description
Technical field
The invention belongs to field of vibration control, are related to a kind of array transverse direction negative stiffness vibration absorber.
Background technique
With advances in technology with the continuous improvement of living standards of the people, quality requirements of the people to manufacturing industry output product
Also it is being continuously improved.During machine-building, often there are multiple factors to cause the quality of product that high standards is not achieved, it is low
Frequency oscillation crosswise is exactly one of to seriously endanger the most, the presence of mechanical low-frequency vibration not only result in the precision of production product by
It influences, also will cause machinery influences the job morale of worker to external radiation low-frequency noise, or even induces cardiovascular and cerebrovascular disease.One
As vibration damping and vibration isolation device, such as vibration isolating suspension has made some progress in the control research of vertical motion, but has ignored
The influence of oscillation crosswise, make product be difficult high quality meet required precision.
In order to ensure the good working environment of worker, the quality of production of product is improved, it is laterally negative rigid to invent a kind of array
Vibration absorber is spent, which can meet the control requirement of structure low frequency oscillation crosswise.
Summary of the invention
The purpose of the present invention is to provide a kind of array transverse direction negative stiffness vibration absorber, which can be effectively controlled structure
Low-frequency vibration reduces the radiation of structure low-frequency noise.
The purpose of the present invention is realized by following technical proposals:
A kind of array transverse direction negative stiffness vibration absorber, including left movable plate, vibration damping minor structure and right fixed plate composition.It is described
Left movable plate be mounted on basic machine；The vibration damping minor structure is arranged between left movable plate and right fixed plate, including
Negative stiffness unit, positive rigidity unit and hydraulic damping bar, the linear array spacings of vibration damping minor structure are vertically arranged；The right side is solid
Fixed board is connected in ground.
As preferred design scheme, the left movable plate and basic machine are connected, with basic machine oscillation crosswise
Transverse shifting.
As preferred design scheme, the negative stiffness unit of the vibration damping minor structure by fix magnetic patch, sliding magnetic patch and
Hydraulic damping bar composition, sliding magnetic patch are made of an annular magnet, and are slided magnetic patch and be placed on hydraulic damping bar, can be along hydraulic resistance
The free smooth movement of Buddhist nun's bar, fixed magnetic patch are also made of an annular magnet, and fixed magnetic patch is fixed on to be stood with what right fixed plate was connected
On bar, fixed magnetic patch and sliding magnetic patch magnetic pole are identical mutually exclusive, and left end and the left connector for sliding magnetic patch are fixedly connected, hydraulic
Damper rod right end is fixedly connected with right fixed plate, and fixed magnetic patch is consistent with sliding magnetic patch lateral length.
As preferred design scheme, the positive rigidity unit of the vibration damping minor structure is made of spring and left connector,
Spring is fixedly connected with left movable plate and left connector, and left connector is fixedly connected with sliding magnetic patch upper end, among left connector
Equipped with circular hole, hydraulic damping bar may pass through the free smooth movement of left connector.
As preferred design scheme, the hydraulic damping bar of the vibration damping minor structure is made of piston rod and hydraulic cylinder,
Piston rod is fixedly connected with left movable plate, and hydraulic cylinder is fixedly connected with right fixed plate.Hydraulic damping bar passes through to medium oil liquid
Throttling action generates damping force, thermal energy is converted vibrational energy into, to achieve the purpose that vibration damping.
The present invention has the advantages that
(1) the device vibration damping minor structure is connected using damper with positive stiffness and negative stiffness unit, and vibration damping minor structure is in parallel in array,
It can effectively reduce the oscillation crosswise of structural body itself.
It (2) can be by adjusting stiffness coefficient and the hydraulic damping of rigidity unit and negative stiffness unit positive in vibration damping minor structure
The damped coefficient of bar realizes wide band vibration control.
Detailed description of the invention
For the clearer technical solution for illustrating this patent embodiment, spy draws following pictures and is introduced.
Fig. 1 show a kind of front view of array transverse direction negative stiffness vibration absorber of the present invention.
Fig. 2 show the structure chart of vibration damping minor structure of the present invention.
Fig. 3 show the structure chart of negative stiffness unit in vibration damping minor structure of the present invention.
Fig. 4 show force diagram when interior sliding magnetic patch moves right in negative stiffness unit of the present invention.
Appended drawing reference summarizes: the left movable plate of 100-, 200- vibration damping minor structure, the right fixed plate of 300-, 210- negative stiffness unit,
The positive rigidity unit of 220-, 230- hydraulic damping bar, 211- slide magnetic patch, the fixed magnetic patch of 212-, 213- upright bar, the left connection of 214-
Part, 221- spring, piston rod -231, the displacement of hydraulic cylinder -232, X-, F1- repulsion, F2- spring tension, the resistance of F3- hydraulic damping bar
Power.
Specific embodiment
It elaborates in conjunction with the accompanying drawings and embodiments to the present invention, embodiment described below is a part of the invention
Embodiment.On the basis of the embodiment of the present invention, those skilled in the art's gained under the premise of not making other creative works
Embodiment all within the scope of protection of the invention.
Embodiment:
As shown in Figure 1-3, the present invention provides a kind of array transverse direction negative stiffness vibration absorber, which includes left movable plate
100, vibration damping minor structure 200 and right fixed plate 300 form.The left movable plate 100 is mounted on basic machine；Described
Vibration damping minor structure 200 is arranged between left movable plate 100 and right fixed plate 300, including negative stiffness unit 210, positive rigidity unit
220 and hydraulic damping bar 230, the linear array spacings of vibration damping minor structure 200 it is vertically arranged；The right fixed plate 300 is connected
On ground.
As Figure 2-3, vibration damping minor structure 200 of the present invention is arranged between left movable plate 100 and right fixed plate 300, subtracts
Sliding magnetic patch 211 inside oscillator structure 200 is made of an annular magnet, and is slided magnetic patch and be placed on hydraulic damping bar 230, can
Along the free smooth movement of hydraulic damping bar 230, fixed magnetic patch 212 is also made of an annular magnet, fixed magnetic patch 212 be fixed on
In the connected upright bar 213 of right fixed plate 300, fixed magnetic patch 212 and sliding 211 magnetic pole of magnetic patch are identical mutually exclusive, slide magnetic patch
211 left end and left connector 214 are fixedly connected, and 230 right end of hydraulic damping bar is fixedly connected with right fixed plate 300, fixed magnetic
Block 212 is consistent with sliding 211 lateral length of magnetic patch, and the positive rigidity unit 220 of vibration damping minor structure is by spring 221 and left connector
214 compositions, spring 221 are fixedly connected with left movable plate 100 and left connector 214, on left connector 214 and sliding magnetic patch 211
End is fixedly connected, and circular hole is equipped among left connector 214, and hydraulic damping bar 230 may pass through left connector 214 freely smooth fortune
It is dynamic.
As shown in figure 4, the present invention, when left movable plate 100 moves, structure is worked as in the analysis of 200 stress of vibration damping minor structure
It does not vibrate, vibration absorber is in equilibrium state, and sliding magnetic patch 211 and fixed magnetic patch 212 are on same perpendicular, spring 221
In equilibrium state；When left movable plate 100 moves right, due to the elastic force of spring 221, slides magnetic patch 211 and move right, by
It being acted in the repulsion for sliding magnetic patch 211 and fixed magnetic patch 212, the fixed magnetic patch 212 in two sides gives the resultant force on sliding 211 phase of the magnetic patch right side,
221 tension of spring simultaneously gives the pulling force of sliding magnetic patch 211 to the left, and hydraulic damping bar 230 is done due to generating relative displacement at this time
Piston motion will give the repulsion of system to the left；It is repeated no more the case where left movable plate 100 moves downward.
Claims (3)
1. a kind of array transverse direction negative stiffness vibration absorber, it is characterised in that: the device includes left movable plate (100), vibration damping
Structure (200) and right fixed plate (300) composition；The left movable plate (100) is mounted on basic machine；The vibration damping
Minor structure (200) is arranged between left movable plate (100) and right fixed plate (300), including negative stiffness unit (210), positive rigidity
Unit (220) and hydraulic damping bar (230), the linear array spacings of vibration damping minor structure (200) are vertically arranged；The right fixation
Plate (300) is connected in ground.
2. a kind of array transverse direction negative stiffness vibration absorber according to claim 1, it is characterised in that: vibration damping
The internal sliding magnetic patch (211) of structure (200) is made of an annular magnet, the left end of sliding magnetic patch (211) and left connector
(214) fixedly connected, sliding magnetic patch is placed on hydraulic damping bar (230), can be along hydraulic damping bar (230) free smooth movement.
3. a kind of array transverse direction negative stiffness vibration absorber according to claim 1, it is characterised in that: the fixation magnetic
Block (212) is made of an annular magnet, and fixed magnetic patch (212) are fixed in the upright bar (213) being connected with right fixed plate (300),
Fixed magnetic patch (212) and sliding magnetic patch (211) magnetic pole are identical mutually exclusive, and fixed magnetic patch (212) and sliding magnetic patch (211) are laterally
Length is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910337350.XA CN110107643A (en) | 2019-04-25 | 2019-04-25 | A kind of array transverse direction negative stiffness vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910337350.XA CN110107643A (en) | 2019-04-25 | 2019-04-25 | A kind of array transverse direction negative stiffness vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110107643A true CN110107643A (en) | 2019-08-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910337350.XA Pending CN110107643A (en) | 2019-04-25 | 2019-04-25 | A kind of array transverse direction negative stiffness vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110107643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323985A (en) * | 2021-06-29 | 2021-08-31 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307195A (en) * | 2013-05-20 | 2013-09-18 | 华中科技大学 | Three-degree-of-freedom ultralow frequency vibration absorber |
| CN103615493A (en) * | 2013-12-03 | 2014-03-05 | 谭晓婧 | Multiple-extended-rod suspension type damper |
| CN104764575A (en) * | 2014-01-03 | 2015-07-08 | 天津航天瑞莱科技有限公司 | Combined vibration test apparatus and method |
| CN205278200U (en) * | 2015-11-21 | 2016-06-01 | 北京市劳动保护科学研究所 | Positive and negative rigidity low frequency isolator that connects in parallel |
| CN106321719A (en) * | 2016-10-20 | 2017-01-11 | 华中科技大学 | Active-passive combined vibration isolator based on positive-stiffness and negative-stiffness parallel connection |
| CN108506250A (en) * | 2018-03-24 | 2018-09-07 | 重庆工程职业技术学院 | Build wind turbine vibration insulating system |
| CN108953473A (en) * | 2018-08-15 | 2018-12-07 | 上海大学 | A kind of vibration isolator of achievable horizontal decoupling |
| CN210440515U (en) * | 2019-04-25 | 2020-05-01 | 华东交通大学 | Array type transverse negative stiffness vibration damper |
-
2019
- 2019-04-25 CN CN201910337350.XA patent/CN110107643A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307195A (en) * | 2013-05-20 | 2013-09-18 | 华中科技大学 | Three-degree-of-freedom ultralow frequency vibration absorber |
| CN103615493A (en) * | 2013-12-03 | 2014-03-05 | 谭晓婧 | Multiple-extended-rod suspension type damper |
| CN104764575A (en) * | 2014-01-03 | 2015-07-08 | 天津航天瑞莱科技有限公司 | Combined vibration test apparatus and method |
| CN205278200U (en) * | 2015-11-21 | 2016-06-01 | 北京市劳动保护科学研究所 | Positive and negative rigidity low frequency isolator that connects in parallel |
| CN106321719A (en) * | 2016-10-20 | 2017-01-11 | 华中科技大学 | Active-passive combined vibration isolator based on positive-stiffness and negative-stiffness parallel connection |
| CN108506250A (en) * | 2018-03-24 | 2018-09-07 | 重庆工程职业技术学院 | Build wind turbine vibration insulating system |
| CN108953473A (en) * | 2018-08-15 | 2018-12-07 | 上海大学 | A kind of vibration isolator of achievable horizontal decoupling |
| CN210440515U (en) * | 2019-04-25 | 2020-05-01 | 华东交通大学 | Array type transverse negative stiffness vibration damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323985A (en) * | 2021-06-29 | 2021-08-31 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
| CN113323985B (en) * | 2021-06-29 | 2022-04-19 | 常州大学 | Shock-resistant adjustable rigidity vibration isolator |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190809 |