CN108361314B - A kind of air spring low frequency vibration isolation device folded based on three Pus - Google Patents
A kind of air spring low frequency vibration isolation device folded based on three Pus Download PDFInfo
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- CN108361314B CN108361314B CN201810082305.XA CN201810082305A CN108361314B CN 108361314 B CN108361314 B CN 108361314B CN 201810082305 A CN201810082305 A CN 201810082305A CN 108361314 B CN108361314 B CN 108361314B
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- vibration isolation
- pus
- low frequency
- frequency vibration
- isolation device
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/0409—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the wall structure
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The present invention relates to a kind of air spring low frequency vibration isolation devices folded based on three Pus, bottom plate including top plate and matching setting, elastic vibration isolation mechanism is additionally provided between the top plate and bottom plate, the elastic vibration isolation mechanism is made of three Pu folded form Multi cell structures with Hookean spring, the Hookean spring is set on the central axis of three Pu folded form Multi cell structures, upper end and top plate are connected, and lower end and bottom plate are connected, and have the gap for preventing from interfering between three Pu folded form Multi cell structures.Invention can adjust vibration isolator stiffness curve by adjusting Multi cell structure cavity pressure, adjustment linear rigidity spring performance or changing the dimensional parameters of parallelogram, realize the adjustable of anti-vibration performance according to by the size of vibration isolation quality.
Description
Technical field
The present invention relates to a kind of low frequency vibration isolation device, especially a kind of air spring low frequency vibration isolation dress folded based on three Pus
It sets, belongs to composite pipe technical field.
Background technique
(such as vehicle seat, precision instrument equipment), health of the low-frequency vibration to driver under low-frequency excitation environment
Or the precision and service life etc. of precision instrument have significant impact.Adjustable low frequency vibration isolation device on the one hand can effectively every
From vibration, and the performance of isolation mounting can be adjusted according to the variation of load.In addition, due to the difference of application places, it is desirable that
Isolation mounting can flexibly be applied on a variety of space scales.
Chinese invention patent " ultralow frequency vibration isolator based on positive Negative stiffness spring parallel connection " (application number:
201210118783.4, publication date: 2012-08-01, publication number: CN102619916A) one kind is disclosed based on positive negative stiffness bullet
The ultralow frequency vibration isolator of spring parallel connection, by guide post, upper shield, sliding block, Negative stiffness spring, lower cover, guide holder, ball and main spring structure
At, guide post is threaded through in guide holder, and guide post slidably, play the guiding role in guide holder, main spring be positive rigidity compression
Spring, main spring are set in outside guide post, and the upper and lower ends of main spring are respectively by the top cover inner surface of upper shield and guide holder groove
End face positioning support, set, sliding block, negative stiffness compressed spring and ball constitute Negative stiffness spring mechanism, and upper shield inner circle circumferential direction is equal
Cloth opens even number cylindrical hole, cooperates respectively with the sliding block of same quantity, and sliding block can slide in cylindrical hole, and Negative stiffness spring is mounted in
Inside sliding block, and by sliding block and the cylindrical hole end face positioning support that covers of set, the spherical of ball and sliding block cooperates, and can be with
Thread connection between the top cover of mutual flexible rotating, guide post and upper shield, guide holder periphery have spherical structure, the spherical surface and rolling
Pearl contacts and ball rolls on it when upper shield is stamped relative displacement under.It is by main spring (positive rigid spring) and negative stiffness
Mechanism parallel connection makes damper have the characteristic of high Static stiffness, low dynamic rate, realizes zero hertz of superlow frequency vibration isolating, also, pass through
Screw thread pair connection is adjusted, can realize that anti-vibration performance is adjustable according to by vibration isolation Mass adjust- ment vibration isolator stiffness curve；Using ball
It realizes rolling friction, reduces frictional resistance；But the vibration isolator the problem is that: mechanical structure is complex, when space ruler
Its application has difficulties when spending smaller.
And three Pu foldings are what one kind was unfolded article with pulling open diagonal both ends, and was then reversely pushed into when shrinking
Method.This method can not only save space, but can to avoid folding and unfolding during cause to be lost.And pass through research hair
Existing this method can make the volume of object reduce 25 times, and energy density but reinforces 14 times.
How three Pu foldings to be applied in low frequency vibration isolation device be a vital thing.
Summary of the invention
It is an object of the invention to: in view of the above-mentioned problems of the prior art, proposing a kind of structurally reasonable, user
Just, the air spring low frequency vibration isolation device folded based on three Pus periodically strong, anti-vibration performance is adjustable, range scale is big.
In order to reach the goals above, a kind of air spring low frequency vibration isolation device folded based on three Pus provided by the invention,
Bottom plate (2) including top plate (1) and matching setting is additionally provided with elastic vibration isolation machine between the top plate (1) and bottom plate (2)
Structure, the elastic vibration isolation mechanism are made of three Pu folded form Multi cell structures (3) with Hookean spring (5), and the Hookean spring (5) sets
It being placed on the central axis of three Pu folded form Multi cell structures (3), upper end and top plate (1) are connected, and lower end and bottom plate (2) are connected, and
There is gap between three Pu folded form Multi cell structures (3)；The three Pus folded form Multi cell structure (3) is by several cell element pipes
(31) it is continuously extended along three-dimensional space, the adjacent edge between each cell element pipe (31) is connected by revolute pair.
Further, the air spring low frequency vibration isolation device above-mentioned folded based on three Pus, the cell element pipe (31) include
One or three Pu foldable structure (311) and the two or three Pu foldable structure (312), the one or the three Pu foldable structure (311) and second
Inner cavity is formed between three Pu foldable structures (312), is accommodated in the inner cavity air bag (4), the one or the three Pu foldable structure
(311) it is connect between the two or three Pu foldable structure (312) adjacent edge by revolute pair.
Further, the air spring low frequency vibration isolation device above-mentioned folded based on three Pus, the one or three Pu fold knot
Continuous expand obtains structure (311) You Sanpu structural unit (3112) in the same direction, each adjacent three Pu structural unit (3112)
It is connected between adjacent side by revolute pair.Three Pu structural unit (3112) is folded by four identical parallelogram by three Pus
Rule combination obtains, and is attached between the adjacent side of each three Pu structural unit (3112) by revolute pair.
Further, the air spring low frequency vibration isolation device above-mentioned folded based on three Pus is had on the bottom plate (2) recessed
Slot (22), the path of the groove (22) is identical as the bottom shape of three Pu folded form Multi cell structures (3), passes through each cell element pipe
(31) lower section.Air bag (4) are equipped in the groove (22).Air bag in groove (22) and the air bag phase in each cell element pipe (31)
Mutually perforation.
Further, the air spring low frequency vibration isolation device above-mentioned folded based on three Pus, the outer surface of the air bag (4)
Fixation is pasted with the inner wall and bottom plate groove (22) of cell element pipe (31), one side bottom is equipped with air inlet (41) and gas outlet
(42).Air bag (4) air inlet (41) external gas source equipment, gas outlet (42) are equipped with pressure reducing valve.
Further, the air spring low frequency vibration isolation device above-mentioned folded based on three Pus, the top plate (1) and bottom plate
(2) mounting hole (11) and (21) are respectively equipped on.
The beneficial effects of the present invention are: the present invention substitutes the machinery in existing low frequency vibration isolation device using three Pu foldings
Structure is mainly made of top plate and bottom plate, periodically three Pu folded form Multi cell structures, air bag and linear rigidity spring, is eliminated multiple
Miscellaneous mechanical part and mechanism, so that the configuration of the present invention is simple, periodically strong.
Meanwhile the present invention by adjusting Multi cell structure cavity pressure, can adjust linearly according to by the size of vibration isolation quality
Rigid spring characteristic or the dimensional parameters for changing parallelogram adjust vibration isolator stiffness curve, and that realizes anti-vibration performance can
It adjusts.
And structure of the invention is almost covered from macroscopic view to microcosmic each scale, can be applied to extensive scale model
In enclosing.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the top view after present invention removal top plate.
Fig. 3 is the cross-sectional view of A-A in Fig. 2.
Fig. 4 is the spatial spread schematic diagram of cell element pipe of the invention.
Fig. 5 is the structural schematic diagram of cell element pipe of the invention.
Fig. 6 is the schematic diagram of three Pu folding unit structures of the invention.
Fig. 7 is the structural schematic diagram of parallelogram in Fig. 6 of the invention.
Fig. 8 is the structural schematic diagram of bottom plate of the invention.
Fig. 9 is mechanics characteristic curve of the invention of the invention, and wherein Fig. 9 a is stress-displacement curve, and Fig. 9 b is
Rigidity-displacement curve figure.
Figure 10 is the schematic diagram of production method of the three Pu folding unit structures in smaller size in Fig. 6.
Specific embodiment
A kind of air spring low frequency vibration isolation device folded based on three Pus provided in this embodiment, structure such as Fig. 1 to Fig. 8 institute
Show, including top plate 1 and the bottom plate of matching setting 2, further respectively has mounting hole 11 and mounting hole 21 on top plate and bottom plate.
Meanwhile elastic vibration isolation mechanism is additionally provided between top plate and bottom plate, the elastic vibration isolation mechanism is by three Pu folded forms
Multi cell structure 3 and linear rigidity spring 5 form.The upper and lower ends of three Pu folded form Multi cell structures and linear rigidity spring pass through viscous
It connects or welding manner is connect with top plate and bottom plate respectively；Wherein, linear rigidity spring is set to three Pu folded form Multi cell structures
Central axis on, upper end and top plate are connected, and lower end and bottom plate are connected, and between having between three Pu folded form Multi cell structures
Gap.As shown in figure 4, three Pu folded form Multi cell structures are then continuously extended by several cell element pipes 31 along three-dimensional space, each born of the same parents
Adjacent edge between first pipe is connected by revolute pair.
As shown in figure 5, cell element Guan Ze includes the one or three Pu foldable structure 311 and the two or three Pu foldable structure 312.Wherein,
Inner cavity is formed between one or three Pu foldable structure and the two or three Pu foldable structure, to accommodate air bag 4, and the one or three Pu folds knot
It is connected between structure and the two or three Pu foldable structure adjacent edge by revolute pair.
As shown in fig. 6, the one or three Pu foldable structure is by three Pu structural units 3112, continuous expand is obtained in the same direction, phase
It is connected between the adjacent side of adjacent three Pu structural units by revolute pair.And three Pu structural unit pressed by four identical parallelogram
Three Pus fold rule combination and obtain, and are attached between adjacent edge by revolute pair.The structural parameters of parallelogram such as Fig. 7 institute
Show.
As shown in figure 8, being also provided with groove 22 on bottom plate, the path of the groove passes through the lower section of each cell element pipe 31,
Inside grooves also are provided with air bag.The air bag in air bag and groove in each cell element pipe is mutually communicated.
Meanwhile the outer surface of air bag and the inner wall and bottom plate groove of cell element pipe are pasted, and are equipped in air bag bottom side
Air inlet 41 and gas outlet 42.The air inlet of air bag is circumscribed with air machinery, and gas outlet is then equipped with pressure reducing valve.
Embodiment one
As shown in Figure 1, the present invention is based on the air spring low frequency vibration isolation device that three Pus fold, and the installation of the isolation mounting
There is larger space in field of employment, parallelogram sturcutre when such as utilizing in middle-size and small-size machinery field, in three Pu structural units
Larger and on-deformable steel disc, size characteristic a=b, γ=75 ° using thickness.Connection between each structure uses
Similar to the revolute pair of common door hinge, including the fixing piece being mounted on two adjacent structures, in the prominent of the edge of fixing piece
Portion is equipped with axis hole out, when the docking of the axis hole of adjacent two fixing piece, is plugged in the axis hole aligned with each other of adjacent fixing piece
Rotary shaft enables adjacent structure to relatively rotate along rotary shaft.Can make so adjacent structure be folded relative to each other or
Expansion, to enable each structure to be folded or be unfolded in such a way that three Pus fold.Linear rigidity spring is placed in Multi cell structure
Center, and spring and Multi cell structure upper and lower ends are welded with top plate and floor.By being set in 41 external gas source of air inlet
Standby, pressure reducing valve is installed to make the intracavitary of three Pu folded form Multi cell structures 3 have constant pressure in gas outlet 42.According to existing
Art research, when three Pu folded form Multi cell structures 3 are folded using rigidity and its cavity pressure is kept constant, it is in vertical direction
Y-direction has negative stiffness characteristic.So, when linear rigidity spring 5 (positive rigidity) and three Pu folded form Multi cell structures 3 are (negative
Rigidity) when carrying out in parallel, the non-linear spy of the low dynamic rate of the high static rigidity of air spring low frequency vibration isolation device may be implemented
Property, as shown in figure 9, and dynamic rate zero stiffness theoretically may be implemented, to realize superlow frequency vibration isolating, Fig. 9 a is the device
Stress-displacement curve, Fig. 9 b are rigidity-displacement curve of the device.
Embodiment two
As shown in Figure 1, the present invention is based on the air spring low frequency vibration isolation device that three Pus fold, and the installation of the isolation mounting
Field of employment be centimetre or grade.Parallelogram sturcutre uses rigid plastics, size characteristic a=b, γ=75 °.
Be connected to each other between each structure by flexible compliant member, in the present embodiment compliant member using plastic mold,
Each structure is linked together by plastic film 6 and keeps the revolute pair relationship between their adjacent edge, as shown in Figure 10.
Linear rigidity spring is placed in Multi cell structure center, and spring and Multi cell structure upper and lower ends is carried out with top plate and floor be bonded.
By the way that in 41 external gas source equipment of air inlet, pressure reducing valve is installed to make the intracavitary tool of three Pu folded form Multi cell structures 3 in gas outlet 42
There is constant pressure.According to existing academic research, when three Pu folded form Multi cell structures 3 are using rigidity folding and its cavity pressure
When keeping constant, it has negative stiffness characteristic in vertical direction, that is, Y-direction.So, when linear rigidity spring 5 (positive rigidity)
When in parallel with three Pu folded form Multi cell structure 3 (negative stiffness) progress, it is high static that the air spring low frequency vibration isolation device may be implemented
The nonlinear characteristic of the low dynamic rate of rigidity, as shown in figure 9, and dynamic rate zero stiffness theoretically may be implemented, to realize
Superlow frequency vibration isolating, Fig. 9 a are stress-displacement curve of the device, and Fig. 9 b is rigidity-displacement curve of the device.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (10)
1. a kind of air spring low frequency vibration isolation device folded based on three Pus, the bottom plate including top plate (1) and matching setting
(2), it is characterised in that: elastic vibration isolation mechanism, the elastic vibration isolation mechanism are additionally provided between the top plate (1) and bottom plate (2)
It is made of three Pu folded form Multi cell structures (3) with Hookean spring (5), the Hookean spring (5) is set to the three more born of the same parents of Pu folded form
On the central axis of structure (3), upper end and top plate (1) are connected, and lower end and bottom plate (2) are connected, and tie with the more born of the same parents of three Pu folded forms
There is the gap for preventing from interfering between structure (3)；
The three Pus folded form Multi cell structure (3) is continuously extended by several cell element pipes (31) along three-dimensional space, described each
Adjacent edge between cell element pipe (31) is connected by revolute pair, and the revolute pair is with the size of three Pu folded form Multi cell structures (3)
It is selected for foundation.
2. the air spring low frequency vibration isolation device according to claim 1 folded based on three Pus, it is characterised in that: the born of the same parents
Member pipe (31) includes the one or three Pu foldable structure (311) and the two or three Pu foldable structure (312), the one or the three Pu foldable structure
(311) inner cavity that Formation cross-section assumes diamond in shape between the two or three Pu foldable structure (312) accommodates air bag (4) in the inner cavity；
One or the three Pu foldable structure (311) is mutually mirrored into the two or three Pu foldable structure (312) along the diagonal line of diamond shape, the two
It is connected between adjacent edge by revolute pair.
3. the air spring low frequency vibration isolation device according to claim 2 folded based on three Pus, it is characterised in that: described the
Continuous expand obtains one or three Pu foldable structure (311) You Sanpu structural units (3112) in the same direction, each adjacent three Pu structure
It is connected between the adjacent side of unit (3112) by revolute pair.
4. the air spring low frequency vibration isolation device according to claim 3 folded based on three Pus, it is characterised in that: described three
Pu structural unit (3112) folds rule combination by three Pus by four identical parallelogram and obtains, each three Pu structural unit
(3112) it is attached between adjacent side by revolute pair.
5. the air spring low frequency vibration isolation device according to claim 1 folded based on three Pus, it is characterised in that: the bottom
There are groove (22) on plate (2), the path of the groove (22) is identical as the bottom shape of three Pu folded form Multi cell structures (3),
Pass through the lower section of each cell element pipe (31).
6. the air spring low frequency vibration isolation device according to claim 5 folded based on three Pus, it is characterised in that: described recessed
Air bag (4) are equipped in slot (22).
7. the air spring low frequency vibration isolation device according to claim 6 folded based on three Pus, it is characterised in that: described recessed
Air bag in slot (22) is mutually communicated with the air bag in each cell element pipe (31).
8. the air spring low frequency vibration isolation device according to claim 6 folded based on three Pus, it is characterised in that: the gas
The outer surface of capsule (4) and the inner wall of cell element pipe (31) and bottom plate groove (22) paste fixation, and one side bottom is equipped with air inlet
(41) and gas outlet (42).
9. the air spring low frequency vibration isolation device according to claim 8 folded based on three Pus, it is characterised in that: the gas
Capsule (4) air inlet (41) external gas source equipment, gas outlet (42) are equipped with pressure reducing valve.
10. the air spring low frequency vibration isolation device according to claim 1 folded based on three Pus, it is characterised in that: described
Mounting hole is respectively equipped on top plate (1) and bottom plate (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082305.XA CN108361314B (en) | 2018-01-29 | 2018-01-29 | A kind of air spring low frequency vibration isolation device folded based on three Pus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082305.XA CN108361314B (en) | 2018-01-29 | 2018-01-29 | A kind of air spring low frequency vibration isolation device folded based on three Pus |
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| CN108361314A CN108361314A (en) | 2018-08-03 |
| CN108361314B true CN108361314B (en) | 2019-08-02 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439947A (en) * | 2019-08-16 | 2019-11-12 | 沈阳智振科技有限公司 | A kind of vibration isolator based on diamond shape periodic structure |
| CN111173870A (en) * | 2019-12-30 | 2020-05-19 | 浙江大学 | Cylindrical paper folding and rebounding mechanism with gap structure |
| CN111457042B (en) * | 2020-04-10 | 2021-08-27 | 中车青岛四方机车车辆股份有限公司 | Vibration isolation equipment and railway vehicle applying same |
| CN111688297B (en) * | 2020-05-15 | 2021-05-28 | 西安交通大学 | Corrugated-folded paper multi-level sandwich energy absorption structure and preparation method thereof |
| CN111802770A (en) * | 2020-08-13 | 2020-10-23 | 哈尔滨工业大学 | Foldable luggage case |
| CN112208677B (en) * | 2020-09-30 | 2022-02-01 | 广州大学 | Stack type paper folding structure with variable rigidity characteristic |
| CN113236705B (en) * | 2021-04-06 | 2022-12-20 | 广州大学 | Adjustable energy absorbing device based on paper folding structure |
| CN113844112B (en) * | 2021-09-28 | 2023-08-29 | 东南大学 | Composite honeycomb material |
| CN113844113B (en) * | 2021-09-28 | 2023-04-07 | 东南大学 | Honeycomb material based on bidirectional stacking three-pump folding |
| CN114274500B (en) * | 2021-12-23 | 2022-09-30 | 西安交通大学 | 3D printing manufacturing method of vibration isolation shoe insole based on absolute zero-stiffness structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6700690A (en) * | 1967-01-17 | 1968-07-18 | ||
| DE1284171B (en) * | 1967-06-19 | 1968-11-28 | Kernforschung Gmbh Ges Fuer | Spring made from superimposed curved discs |
| DE2348967A1 (en) * | 1973-09-28 | 1975-04-10 | Hille | Pneumatic air spring for vehicles - having line of hollow spherical interconnected air chambers within coil spring |
| CN204628394U (en) * | 2015-01-29 | 2015-09-09 | 苏州中太动力弹簧有限公司 | Silencing spring |
| CN206361062U (en) * | 2016-12-22 | 2017-07-28 | 湛江市汉成科技有限公司 | A kind of pressure regulating safety Rubber shock-absorbing pad |
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