CN108361314A - 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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- CN108361314A CN108361314A CN201810082305.XA CN201810082305A CN108361314A CN 108361314 A CN108361314 A CN 108361314A CN 201810082305 A CN201810082305 A CN 201810082305A CN 108361314 A CN108361314 A CN 108361314A
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- Prior art keywords
- vibration isolation
- pus
- low frequency
- frequency vibration
- isolation device
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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
- 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 is connected with top plate, and lower end is connected with bottom plate, and has 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 technology
(such as 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 the parallel connection of positive Negative stiffness spring " (application number：
201210118783.4 publication date：2012-08-01, publication number：CN102619916A it) discloses a kind of based on positive negative stiffness
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
It constitutes, guide post is threaded through in guide holder, and guide post slidably, play the guiding role in guide holder, and main spring is positive rigidity pressure
Contracting spring, main spring are set in outside guide post, and the upper and lower ends of main spring are recessed by the top cover inner surface of upper shield and guide holder respectively
The positioning support of slot end face, set, sliding block, negative stiffness compressed spring and ball constitute Negative stiffness spring mechanism, upper shield inner circle circumferential direction
Even number cylindrical hole is uniformly opened, is coordinated respectively with the sliding block of same quantity, sliding block can slide in cylindrical hole, Negative stiffness spring dress
Inside sliding block, and the cylindrical hole end face covered by sliding block and set positions and supports, and the spherical of ball and sliding block coordinates, and can
With mutual flexible rotating, thread connection between guide post and the head cover of upper shield, guide holder periphery have spherical structure, the spherical surface with
Ball contacts and ball rolls on it when upper shield is stamped relative displacement under.It is by main spring (positive rigid spring) and bears rigid
The parallel connection of degree mechanism makes damper have the characteristic of high Static stiffness, low dynamic rate, realizes zero hertz of superlow frequency vibration isolating, also, logical
The connection of adjustment screw thread pair is crossed, can realize that anti-vibration performance is adjustable according to by vibration isolation Mass adjust- ment vibration isolator stiffness curve；Using rolling
Pearl realizes rolling friction, reduces frictional resistance；But the vibration isolator the problem is that：Mechanical structure is complex, works as space
Its application has difficulties when scale is smaller.
And three Pu foldings be it is a kind of article is unfolded with pulling open diagonal both ends, and be then reversely pushed into when shrinking
Method.This method can not only save space, and can be to avoid folding and cause to be lost during being unfolded.And it is sent out by studying
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.
Invention content
It is an object of the invention to：In view of the above-mentioned problems of the prior art, proposing a kind of reasonable for structure, 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 object 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), the Hookean spring (5)
It being set on the central axis of three Pu folded form Multi cell structures (3), upper end is connected with top plate (1), and lower end is connected with bottom plate (2),
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 dimensions, 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), air bag (4), the one or the three Pu foldable structure are accommodated in the inner cavity
(311) it is connect by revolute pair between the two or three Pu foldable structure (312) adjacent edge.
Further, the air spring low frequency vibration isolation device above-mentioned folded based on three Pus, the one or three Pu fold knot
By three Pu structural units (3112), continuous expand obtains structure (311) in the same direction, each adjacent three Pu structural unit (3112)
It is connected by revolute pair between adjacent side.Three Pu structural unit (3112) is folded by four identical parallelogram by three Pus
Rule combines to obtain, and is attached by revolute pair between the adjacent side of each three Pu structural unit (3112).
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) is equipped in the groove (22).Air bag in groove (22) and the air bag in each cell element pipe (31)
It is mutually communicated.
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 invention are as follows：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 is 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 the structure of the present invention is almost covered from macroscopic view to microcosmic each scale, can be applied to extensive scale model
In enclosing.
Description of the drawings
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 vertical view after present invention removal top plate.
Fig. 3 is the sectional view of A-A in Fig. 2.
Fig. 4 is the spatial spread schematic diagram of the cell element pipe of the present invention.
Fig. 5 is the structural schematic diagram of the cell element pipe of the present invention.
Fig. 6 is the schematic diagram of the three Pu folding unit structures of the present invention.
Fig. 7 be the present invention Fig. 6 in parallelogram structural schematic diagram.
Fig. 8 is the structural schematic diagram of the bottom plate of the present invention.
Fig. 9 is the mechanics characteristic curve of the present invention of the present invention, and wherein Fig. 9 a are stress-displacement curve, and Fig. 9 b are
Rigidity-displacement curve figure.
Figure 10 is the schematic diagram of production method of the three Pu folding unit structures in reduced size in Fig. 6.
Specific implementation mode
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 institutes
Show, including top plate 1 and the bottom plate of matching setting 2, mounting hole 11 and mounting hole 21 are further respectively had 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 is formed with linear rigidity spring 5.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 is connected with bottom plate, 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 dimensions, 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 by revolute pair between structure and the two or three Pu foldable structure adjacent edge.
As shown in fig. 6, the one or three Pu foldable structure is by three Pu structural units 3112, continuous expand obtains in the same direction, phase
It is connected by revolute pair between the adjacent side of adjacent three Pu structural units.And three Pu structural unit pressed by four identical parallelogram
Three Pus fold rule and combine to obtain, and are attached by revolute pair between adjacent edge.The structural parameters of parallelogram such as Fig. 7
It is shown.
As shown in figure 8, be further opened with groove 22 on bottom plate, the path of the groove by 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, when such as utilizing in middle-size and small-size machinery field, the parallelogram sturcutre in three Pu structural units
Larger using thickness and on-deformable steel disc, size characteristic a=b, γ=75 °.Connection between each structure uses
Include the fixing piece on two adjacent structures similar to the revolute pair of common door hinge, in the prominent of the edge of fixing piece
Go out portion and be equipped with axis hole, 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 be relatively rotated 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 are 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 by flexible compliant member between each structure, 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 of three Pu folded form Multi cell structures 3 have 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 are rigidity-displacement curve of the device.
In addition to the implementation, the present invention can also have other embodiment.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, including top plate (1) and the bottom plate of 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 with Hookean spring (5) three Pu folded form Multi cell structures (3), 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 is connected with top plate (1), and lower end is connected with bottom plate (2), and is tied 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 dimensions, 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 by revolute pair between adjacent edge.
3. the air spring low frequency vibration isolation device according to claim 2 folded based on three Pus, it is characterised in that：Described
By three Pu structural units (3112), continuous expand obtains one or three Pu foldable structures (311) in the same direction, each adjacent three Pu structure
It is connected by revolute pair between the adjacent side of unit (3112).
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 by three Pus by four identical parallelogram and combines to obtain, each three Pu structural unit
(3112) it is attached by revolute pair between adjacent side.
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 is 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：It is described recessed
Air bag (4) is 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：It is 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 1 folded based on three Pus, it is characterised in that：The gas
Fixation is pasted in the outer surface of capsule (4) with the inner wall of cell element pipe (31) and bottom plate groove (22), 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：It is described
It is respectively equipped with mounting hole (11) and (21) on top plate (1) and bottom plate (2).
Priority Applications (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 |
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108361314A true CN108361314A (en) | 2018-08-03 |
| CN108361314B CN108361314B (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810082305.XA Active 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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Cited By (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 |
| CN111457042A (en) * | 2020-04-10 | 2020-07-28 | 中车青岛四方机车车辆股份有限公司 | Vibration isolation equipment and railway vehicle applying same |
| CN111688297A (en) * | 2020-05-15 | 2020-09-22 | 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 |
| CN112208677A (en) * | 2020-09-30 | 2021-01-12 | 广州大学 | Stack type paper folding structure with variable rigidity characteristic |
| CN113236705A (en) * | 2021-04-06 | 2021-08-10 | 广州大学 | Adjustable energy absorbing device based on paper folding structure |
| CN113844113A (en) * | 2021-09-28 | 2021-12-28 | 东南大学 | Honeycomb material based on bidirectional stacking three-pump folding |
| CN113844112A (en) * | 2021-09-28 | 2021-12-28 | 东南大学 | Composite honeycomb material |
| CN114274500A (en) * | 2021-12-23 | 2022-04-05 | 西安交通大学 | 3D printing manufacturing method of vibration isolation shoe insole based on absolute zero-stiffness structure |
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| 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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| CH471335A (en) * | 1967-01-17 | 1969-04-15 | Tijger Plastics N V | Spring element for shock absorption |
| 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 |
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Cited By (13)
| 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 |
| CN111457042A (en) * | 2020-04-10 | 2020-07-28 | 中车青岛四方机车车辆股份有限公司 | Vibration isolation equipment and railway vehicle applying same |
| CN111688297A (en) * | 2020-05-15 | 2020-09-22 | 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 |
| CN112208677A (en) * | 2020-09-30 | 2021-01-12 | 广州大学 | Stack type paper folding structure with variable rigidity characteristic |
| CN113236705A (en) * | 2021-04-06 | 2021-08-10 | 广州大学 | Adjustable energy absorbing device based on paper folding structure |
| CN113236705B (en) * | 2021-04-06 | 2022-12-20 | 广州大学 | Adjustable energy absorbing device based on paper folding structure |
| CN113844113A (en) * | 2021-09-28 | 2021-12-28 | 东南大学 | Honeycomb material based on bidirectional stacking three-pump folding |
| CN113844112A (en) * | 2021-09-28 | 2021-12-28 | 东南大学 | Composite honeycomb material |
| CN113844112B (en) * | 2021-09-28 | 2023-08-29 | 东南大学 | Composite honeycomb material |
| CN114274500A (en) * | 2021-12-23 | 2022-04-05 | 西安交通大学 | 3D printing manufacturing method of vibration isolation shoe insole based on absolute zero-stiffness structure |
| 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 |
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|---|---|
| CN108361314B (en) | 2019-08-02 |
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