CN208919207U - Extension spring formula quasi-zero stiffness vibration isolators - Google Patents
Extension spring formula quasi-zero stiffness vibration isolators Download PDFInfo
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- CN208919207U CN208919207U CN201821473137.9U CN201821473137U CN208919207U CN 208919207 U CN208919207 U CN 208919207U CN 201821473137 U CN201821473137 U CN 201821473137U CN 208919207 U CN208919207 U CN 208919207U
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- platform
- pedestal
- supporting seat
- fixed supporting
- sliding block
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Abstract
Extension spring formula quasi-zero stiffness vibration isolators, including pedestal, top in the middle part of pedestal is equipped with platform, the lower section of platform is equipped with pressure spring along the vertical direction, the upper end of pressure spring withstands on the bottom of platform, the lower end top of pressure spring is on the base, the top of pedestal is centered on platform around the fixed supporting seat equipped with 3 or more, the bottom end of each fixed supporting seat is fixedly linked with pedestal respectively, the top of each fixed supporting seat is radially respectively equipped with slideway, slideway runs through the inside edge of corresponding fixed supporting seat radially inward, a sliding block is separately installed on each slideway, outer end of each sliding block towards the end face of platform respectively with a support rod is hinged and connected, each support rod is disposed radially respectively.Its purpose is to provide one kind can be effectively isolated the low-frequency vibration between equipment and Equipment Foundations, and its bearing capacity is big, and vibration isolating effect is splendid, the extension spring formula quasi-zero stiffness vibration isolators of the vibration isolation particularly suitable for operating table, a variety of accurate mechanical equipments.
Description
Technical field
The utility model relates to a kind of extension spring formula quasi-zero stiffness vibration isolators.
Background technique
With social progress and development, the improvement of people's living standards, so that people are to mechanical oscillation quality at one's side
It is required that it is higher and higher, especially show that vehicle and operating table, highly sophisticated device instrument, high-accuracy mechanical equipment etc. are accurate or super
In accurate environment.Existing vibration isolator is the elastic element for connecting equipment and basis, mainly to reduce and eliminate by equipment
It is transmitted to basis, vibration force and the medium, high frequency vibration that equipment is transmitted to by basis.But studies have shown that people are to low-frequency vibration
It is most sensitive, it is in low-frequency vibration environment for a long time, can make one to generate the adverse reactions such as fatigue, anxiety；And low-frequency vibration
Damage to mechanical equipment is larger, is the one of the major reasons for causing mechanical equipment to reduce working efficiency, even fatigue damage.Institute
Low-frequency vibration is isolated, protect people and other machinery seem particularly necessary without being influenced by low-frequency vibration, but it is existing every
Vibration device cannot be effectively isolated the low-frequency vibration between equipment and Equipment Foundations.
Utility model content
The purpose of this utility model is to provide one kind can be effectively isolated the low-frequency vibration between equipment and Equipment Foundations, and
And its bearing capacity is big, vibration isolating effect is splendid, the extension spring formula of the vibration isolation particularly suitable for operating table, a variety of accurate mechanical equipments
Quasi-zero stiffness vibration isolators.
The utility model extension spring formula quasi-zero stiffness vibration isolators, including pedestal, the top in the middle part of pedestal are equipped with platform, put down
The lower section of platform is equipped with pressure spring along the vertical direction, and the upper end of pressure spring withstands on the bottom of platform, and the lower end of pressure spring is pushed up on the base, pedestal
Top centered on platform around equipped with 3 or more fixed supporting seats, central symmetry cloth of the fixed supporting seat around platform
It sets, the bottom end of each fixed supporting seat is fixedly linked with pedestal respectively, and the top of each fixed supporting seat is radially respectively equipped with
Slideway, slideway run through the inside edge of corresponding fixed supporting seat radially inward, and a cunning is separately installed on each slideway
Block, outer end of each sliding block towards the end face of platform respectively with a support rod are hinged and connected, and each support rod difference is radially
Setting, the inner end of each support rod are connected with the side walls hinged of platform respectively, tension spring are respectively equipped between adjacent sliding block, each
Tension spring stretches to corresponding sliding block in the horizontal direction respectively, and two ends of each tension spring are connected with corresponding sliding block respectively.
Preferably, the cross section of the platform in the horizontal direction is circle, and the lower part of each pressure spring is set in positioning
On axis, locating shaft is arranged along the vertical direction, and the bottom end of each locating shaft is fixedly linked with pedestal respectively.
Preferably, the pedestal is disc, and the center line of pedestal is overlapped with the center line of platform.
Preferably, the quantity of the fixed supporting seat, sliding block and pressure spring is 3-8, fixed supporting seat, sliding block and pressure spring
It is arranged around the center of platform.
Preferably, the bottom end for determining support base is connected as one with pedestal, determines support base and pedestal using steel or aluminium
Alloy or engineering plastics are made.
The extension spring formula quasi-zero stiffness vibration isolators of the utility model are the elastic elements for connecting equipment and basis, main to use
The vibration on basis is transmitted to reduce and eliminate by equipment and the vibration of equipment is transmitted to by basis, when in use, allows 3 He of pressure spring
Tension spring 7 allows support rod to be near horizontal position all in stress after the quality of complete carrying platform, when there is vibration
When generation, under the action of extension spring and compression support spring, support rod can fluctuate above and below horizontal position, can make at this time
System is under lower dynamic rate characteristic states, i.e., subject to zero stiffness characteristic, thus can allow the natural frequency ω n of platform
Level off to zero, so as to be well isolated from the low-frequency vibration between equipment and Equipment Foundations, and its bearing capacity is big, quiet deformation
Small, long service life, vibration isolating effect is splendid, the vibration isolation particularly suitable for operating table, a variety of accurate mechanical equipments.Therefore, this reality
There is the low-frequency vibration that can be effectively isolated between equipment and Equipment Foundations with novel extension spring formula quasi-zero stiffness vibration isolators, and
Its bearing capacity is big, and vibration isolating effect is splendid, particularly suitable for operating table, a variety of accurate mechanical equipments vibration isolation the characteristics of.
The extension spring formula quasi-zero stiffness vibration isolators of the utility model are described in further detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the perspective view of the utility model extension spring formula quasi-zero stiffness vibration isolators；
Fig. 2 is the perspective view from another viewpoint of the utility model extension spring formula quasi-zero stiffness vibration isolators；
Fig. 3 is the achievable quasi- zero stiffness performance plot of the present invention.
Specific embodiment
As depicted in figs. 1 and 2, the extension spring formula quasi-zero stiffness vibration isolators of the utility model, including pedestal 1, in pedestal 1
The top in portion is equipped with platform 2, and the lower section of platform 2 is equipped with pressure spring 3 along the vertical direction, and the upper end of pressure spring 3 withstands on the bottom of platform 2,
The lower end of pressure spring 3 is withstood on pedestal 1, and the top of pedestal 1 surround the fixed supporting seat 4 equipped with 3 or more centered on platform 2,
Fixed supporting seat 4 is centrosymmetrically arranged around platform 2, and the bottom end of each fixed supporting seat 4 is fixedly linked with pedestal 1 respectively,
The top of each fixed supporting seat 4 is radially respectively equipped with slideway 5, and slideway 5 runs through corresponding fixed supporting seat 4 radially inward
Inside edge, be separately installed with a sliding block 6 on each slideway 5, each sliding block 6 towards the end face of platform 2 respectively with one
The outer end of support rod is hinged and connected, and each support rod is disposed radially respectively, the inner end of each support rod side with platform 2 respectively
Wall is hinged and connected, and tension spring 7 is respectively equipped between adjacent sliding block 6, and each tension spring 7 stretches to corresponding sliding block in the horizontal direction respectively
6, two ends of each tension spring 7 are connected with corresponding sliding block 6 respectively.
The cross section of above-mentioned platform 2 in the horizontal direction is circle, each pressure spring as a further improvement of the utility model,
3 lower part is set on locating shaft 8, and locating shaft 8 is arranged along the vertical direction, the bottom end of each locating shaft 8 respectively with pedestal 1
It is fixedly linked.
Said base 1 is disc as a further improvement of the utility model, in the center line of pedestal 1 and platform 2
Heart line is overlapped.
The quantity of above-mentioned fixed supporting seat 4, sliding block 6 and pressure spring 3 is 3-8 as a further improvement of the utility model,
A, fixed supporting seat 4, sliding block 6 and pressure spring 3 are arranged around the center of platform 2.
The above-mentioned bottom end for determining support base 4 is connected as one with pedestal 1 as a further improvement of the utility model, fixed to prop up
Support seat 4 and pedestal 1 are made of steel or aluminium alloy or engineering plastics.
Referring to Fig. 3, Fig. 3 is the achievable quasi- zero stiffness performance plot of the utility model, and the abscissa in figure is platform displacement
Parameter, displacement unit are millimeters；Ordinate is the stiffness K of system, and unit is Newton millimetre.
Classical Theory of Vibration shows linear vibration isolator only to greater than vibrating isolation systemThe vibration of times intrinsic frequency has
Buffer action.The natural frequency ω of vibrating isolation systemnExpression formula be(k be vibrating isolation system rigidity, m be by every
Quality from object).It follows that reducing the natural frequency ω of vibrating isolation systemnIt is the effective way that more low frequency vibration is isolated.
The intrinsic frequency of vibrating isolation system is reduced, effective approach is to reduce the rigidity of vibrating isolation system, and reduce the rigidity of vibrating isolation system
The displacement of the carried quality of vibrating isolation system will be made larger, reduce the bearing capacity of system.So a kind of energy of utility model
The vibration isolator of effectively abatement low-frequency vibration just seems particularly necessary.
Ultra-precision Turning, optical instrument, MEMS technology and ultrasound electric machine are current nanometer technique research fields both at home and abroad
Hot spot, but be micro/nano level for amplitude, the low-frequency vibration that frequency is several hertz, be always that restrict these technologies further
Improve the bottleneck of precision and efficiency.The low-frequency vibration of foundation vibration is 0.01Hz -100Hz.Low-frequency vibration can be vibration frequency
The very big vibration of lower, vibration amplitude.
The extension spring formula quasi-zero stiffness vibration isolators of the utility model are the elastic elements for connecting equipment and basis, main to use
The vibration on basis is transmitted to reduce and eliminate by equipment and the vibration of equipment is transmitted to by basis, when in use, allows 3 He of pressure spring
Tension spring 7 allows support rod to be near horizontal position all in stress after the quality of complete carrying platform 2, when there is vibration
When movable property is raw, under the action of extension spring 5 and compression support spring 6, support rod can fluctuate above and below horizontal position, at this time
System can be made to be under lower dynamic rate characteristic states, i.e., subject to zero stiffness characteristic referring to Fig. 3 thus can allow platform 2
Natural frequency ω n also levels off to zero, and so as to be well isolated from the low-frequency vibration between equipment and Equipment Foundations, and it holds
Carry power it is big, it is quiet deformation it is small, long service life, vibration isolating effect is splendid, particularly suitable for operating table, a variety of accurate mechanical equipments every
Vibration.
Claims (4)
1. extension spring formula quasi-zero stiffness vibration isolators, it is characterised in that: including pedestal (1), the top in the middle part of pedestal (1) is equipped with flat
Platform (2), the lower section of platform (2) are equipped with pressure spring (3) along the vertical direction, and the upper end of pressure spring (3) withstands on the bottom of platform (2), pressure spring
(3) lower end is withstood on pedestal (1), and the top of pedestal (1) is centered on platform (2) around the fixed support equipped with 3 or more
Seat (4), fixed supporting seat (4) are centrosymmetrically arranged around platform (2), the bottom end of each fixed supporting seat (4) respectively with base
Seat (1) is fixedly linked, and the top of each fixed supporting seat (4) is radially respectively equipped with slideway (5), and slideway (5) is radially inward
Through the inside edge of corresponding fixed supporting seat (4), a sliding block (6), each sliding block are separately installed on each slideway (5)
(6) outer end towards the end face of platform (2) respectively with a support rod is hinged and connected, and each support rod is disposed radially respectively,
The inner end of each support rod with side walls hinged being connected of platform (2), is respectively equipped with tension spring (7) between adjacent sliding block (6) respectively,
Each tension spring (7) stretches to corresponding sliding block (6) in the horizontal direction respectively, two ends of each tension spring (7) respectively with corresponding sliding block
(6) it is connected.
2. extension spring formula quasi-zero stiffness vibration isolators according to claim 1, it is characterised in that: the platform (2) is along water
Square to cross section be circle, the lower part of each pressure spring (3) is set on locating shaft (8), and locating shaft (8) is along vertical side
To setting, the bottom end of each locating shaft (8) is fixedly linked with pedestal (1) respectively.
3. extension spring formula quasi-zero stiffness vibration isolators according to claim 2, it is characterised in that: the pedestal (1) is circle
The center line of dish type, pedestal (1) is overlapped with the center line of platform (2).
4. extension spring formula quasi-zero stiffness vibration isolators according to claim 3, it is characterised in that: the fixed supporting seat
(4), the quantity of sliding block (6) and pressure spring (3) is 3-8, and fixed supporting seat (4), sliding block (6) and pressure spring (3) are around platform (2)
Center setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821473137.9U CN208919207U (en) | 2018-09-10 | 2018-09-10 | Extension spring formula quasi-zero stiffness vibration isolators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821473137.9U CN208919207U (en) | 2018-09-10 | 2018-09-10 | Extension spring formula quasi-zero stiffness vibration isolators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208919207U true CN208919207U (en) | 2019-05-31 |
Family
ID=66704994
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821473137.9U Expired - Fee Related CN208919207U (en) | 2018-09-10 | 2018-09-10 | Extension spring formula quasi-zero stiffness vibration isolators |
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| Country | Link |
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| CN (1) | CN208919207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139787A (en) * | 2018-09-10 | 2019-01-04 | 中国人民解放军陆军装甲兵学院 | Extension spring formula quasi-zero stiffness vibration isolators |
-
2018
- 2018-09-10 CN CN201821473137.9U patent/CN208919207U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139787A (en) * | 2018-09-10 | 2019-01-04 | 中国人民解放军陆军装甲兵学院 | Extension spring formula quasi-zero stiffness vibration isolators |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190531 Termination date: 20210910 |
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| CF01 | Termination of patent right due to non-payment of annual fee |