CN112963478A - Tunable quasi-zero-stiffness vibration isolation device for buckling spring - Google Patents
Tunable quasi-zero-stiffness vibration isolation device for buckling spring Download PDFInfo
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- CN112963478A CN112963478A CN202110322860.7A CN202110322860A CN112963478A CN 112963478 A CN112963478 A CN 112963478A CN 202110322860 A CN202110322860 A CN 202110322860A CN 112963478 A CN112963478 A CN 112963478A
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- spring
- vibration isolation
- buckling
- quasi
- tunable
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- 238000002955 isolation Methods 0.000 title claims abstract description 39
- 238000005096 rolling process Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910001095 light aluminium alloy Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a tunable buckling spring quasi-zero stiffness vibration isolation device which mainly comprises a base, a bottom adjusting and supporting device, a guide rail, a buckling spring, a supporting spring and a vibration isolation table connecting part; the guide rail is connected with the base through a fastening bolt; the buckling springs are fixed on the fixed block and the sliding block and are vertically and symmetrically arranged relative to the guide rail; the bottom adjusting and supporting device is connected with the base through a fastening bolt; the supporting spring is connected with the bottom adjusting and supporting device through a bolt; the guide rail is connected with the vibration isolation table through a vibration isolation table connecting part, and the vibration isolation table connecting part is symmetrically arranged and placed relative to the supporting spring. The connection adopts a symmetrical structure arrangement, and the spring stiffness adjustment is realized by twisting the thick screw; the buckling springs and the supporting springs realize quasi-zero rigidity, so that the height of the platform can be kept unchanged; the invention has the characteristics of labor saving in adjustment, high efficiency and stable work.
Description
Technical Field
The invention relates to the field of vibration control, in particular to a tunable buckling spring quasi-zero stiffness vibration isolation device.
Background
The control of vibration is always an important problem in industrial production, and the harm of vibration reduces the industrial production efficiency, and threatens the production safety. When the natural frequency of the vibration isolator is consistent with the forced vibration frequency of the equipment, the vibration amplitude of the equipment under the frequency can be reduced, and a good vibration isolation effect is achieved. Aiming at the vibration of different frequency bands, the traditional spring vibration isolator can not adjust the rigidity of the spring and can not realize good vibration isolation effect on the vibration of different frequency bands. Therefore, in order to increase the application range of the vibration isolator, a tunable buckling spring quasi-zero stiffness vibration isolator is needed.
Disclosure of Invention
The invention aims to provide a tunable buckling spring quasi-zero stiffness vibration isolation device which can conveniently and quickly adjust the stiffness of a spring for bearing different masses and realize the vibration isolation effect. The invention adopts the following technical scheme:
a tunable buckling spring quasi-zero stiffness vibration isolation device mainly comprises a base, a bottom adjusting and supporting device, a guide rail, a buckling spring, a supporting spring and a vibration isolation table connecting component; the guide rail is connected with the base through a fastening bolt; the buckling springs are fixed on the fixed block and the sliding block and are vertically and symmetrically arranged relative to the guide rail; the bottom adjusting and supporting device is connected with the base through a fastening bolt; the supporting spring is connected with the bottom adjusting and supporting device through a bolt; the guide rail is connected with the vibration isolation table through a vibration isolation table connecting part, and the vibration isolation table connecting part is symmetrically arranged and placed relative to the supporting spring. The connection adopts symmetrical structural arrangement, and the spring stiffness adjustment is realized by twisting the thick screw rod.
Furthermore, the vibration isolation table connecting parts are connected through rolling bearings.
Furthermore, the rigidity of the supporting spring is adjusted by adjusting the bottom adjusting and supporting device.
Furthermore, the sliding block slides on the linear guide rail, so that the negative stiffness adjustment of the buckling spring is realized.
Furthermore, the four fine screw rods penetrate through the bottom adjusting and supporting device, and the structure can prevent the supporting spring from deviating in the moving process.
Furthermore, the buckling spring base material is silica gel.
Furthermore, the base, the bottom adjusting and supporting device and the vibration isolation table connecting component of the vibration isolator are all made of light aluminum alloy materials.
Different from the traditional vibration absorber, the vibration isolation table connecting part of the vibration absorber is symmetrically arranged and placed relative to the supporting spring, and bending moments generated at two ends can be mutually offset during vibration; the vibration isolation device can adjust the supporting device by adjusting the bottom to realize the rigidity adjustment of the supporting spring; the slider slides on the linear guide rail to realize the adjustment of the negative stiffness of the buckling spring; the tunable quasi-zero-stiffness vibration isolation device for the buckling spring has the characteristics of labor saving in adjustment, high efficiency and stable work.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a general schematic view of a tunable buckling spring quasi-zero stiffness vibration isolation device according to the present invention;
FIG. 2 is a schematic view of a support spring according to the present invention;
FIG. 3 is a schematic view of a vibration isolation table attachment component according to the present invention;
FIG. 4 is a schematic view of a bottom adjustment support apparatus according to the present invention;
FIG. 5 is a schematic view of a guide rail according to the present invention;
fig. 6 is a schematic view of a buckling spring according to the present invention.
Labeled as: 1-platform, 2-sleeve, 3-rolling bearing, 4-connecting rod, 5-supporting spring, 6-piston rod, 7-supporting seat, 8-thick screw rod, 9-T type support, 10-sliding block connecting rod, 11-sliding block component, 12-buckling spring, 13-guide rail, 14-linear bearing, 15-thin screw rod, 16-side plate and 17-bottom plate.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 6, the tunable quasi-zero-stiffness vibration isolation device for the buckling spring mainly comprises a sleeve (2), a connecting rod (4), a supporting spring (5), a piston rod (6), a supporting seat (7), a thick screw rod (8), a slider connecting rod (10), a slider assembly (11), a buckling spring (12), a guide rail (13), a linear bearing (14) and a thin screw rod (15). The spring (5) is sleeved on the piston rod (6) and is connected with the sleeve (2) through a linear bearing (13); the sleeve (2) is connected with the slider connecting rod (10) through a connecting rod (4), and the connecting rod (4) is symmetrically arranged relative to the sleeve (2); the base of the piston rod (6) is connected with the supporting seat (7) through four thin screw rods (15); the top of the thick bolt (8) is pressed against the tightness of the base adjusting spring (5) of the piston rod (6); the sliding block component (11) is connected to the guide rail (13) through a sliding block connecting rod (10) to slide; one end of a buckling spring (12) is fixed on the fixed block, and the other end of the buckling spring is fixed on the sliding block component (11); four T-shaped supports (9) are fixed on the side plate (16).
The tunable quasi-zero-stiffness vibration isolation device for the buckling spring is different from a traditional vibration absorber in that the vibration isolation table connecting part of the vibration isolation device is symmetrically arranged and placed relative to the supporting spring, and bending moments generated at two ends can be mutually offset during vibration; the vibration isolation device can adjust the supporting device by adjusting the bottom to realize the rigidity adjustment of the supporting spring; the slider slides on the linear guide rail to realize the adjustment of the negative stiffness of the buckling spring; according to the tunable quasi-zero-stiffness vibration isolation device for the buckling spring, the quasi-zero stiffness is realized by the buckling spring and the supporting spring, the height of a platform can be kept unchanged, and the tunable quasi-zero-stiffness vibration isolation device has the characteristics of labor saving in adjustment, high efficiency and stable work.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (8)
1. A tunable quasi-zero-stiffness vibration isolation device for a buckling spring is characterized in that a spring (5) is sleeved on a piston rod (6) and is connected with a sleeve (2) through a linear bearing (13); the sleeve (2) is connected with the slider connecting rod (10) through a connecting rod (4), and the connecting rod (4) is symmetrically arranged relative to the sleeve (2); the base of the piston rod (6) is connected with the supporting seat (7) through four thin screw rods (15); the top of the thick bolt (8) is pressed against the tightness of the base adjusting spring (5) of the piston rod (6); the sliding block component (11) is connected to the guide rail (13) through a sliding block connecting rod (10) to slide; one end of the buckling spring (12) is fixed with the fixed block, and the other end is fixed with the sliding block component (11); four T-shaped supports (9) are fixed on the side plate (16).
2. A tunable buckling spring quasi-zero stiffness vibration isolation device according to claim 1, wherein: gradient welding is adopted between the platform (1) and the sleeve (2) to prevent stress concentration.
3. A tunable buckling spring quasi-zero stiffness vibration isolation device according to claim 1, wherein: the lower end of the spring (5) is connected with the base of the piston rod (6) through a punching gasket.
4. A tunable buckling spring quasi-zero stiffness vibration isolation device according to claim 1, wherein: the connecting rods (4) are distributed symmetrically, the upper ends of the connecting rods are connected with the sleeve (2) through rolling bearings (3), and the lower ends of the connecting rods are connected with the sliding block connecting rods (10) through the rolling bearings (3).
5. A tunable buckling spring quasi-zero stiffness vibration isolation device according to claim 1, wherein: the four fine screw rods (15) penetrate through the base of the piston rod (6).
6. The symmetrical connection adjustable spring damper as claimed in claim 1, wherein: the spring stiffness adjustment is realized by twisting the thick screw rod (8) and the sliding block assembly (11) to slide on the guide rail (13) to drive the buckling spring (12).
7. A tunable buckling spring quasi-zero stiffness vibration isolation device according to claim 1, wherein: and the buckling spring base material of the vibration isolator is silica gel.
8. A tunable buckling spring quasi-zero stiffness vibration isolation device according to claim 1, wherein: the base, the bottom adjusting and supporting device and the vibration isolation table connecting part of the vibration isolator are all made of light aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110322860.7A CN112963478A (en) | 2021-03-26 | 2021-03-26 | Tunable quasi-zero-stiffness vibration isolation device for buckling spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110322860.7A CN112963478A (en) | 2021-03-26 | 2021-03-26 | Tunable quasi-zero-stiffness vibration isolation device for buckling spring |
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| Publication Number | Publication Date |
|---|---|
| CN112963478A true CN112963478A (en) | 2021-06-15 |
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| CN202110322860.7A Pending CN112963478A (en) | 2021-03-26 | 2021-03-26 | Tunable quasi-zero-stiffness vibration isolation device for buckling spring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114273675A (en) * | 2021-12-28 | 2022-04-05 | 北京星航机电装备有限公司 | Additive manufacturing method adopting non-contact dimensional shape |
| CN115523254A (en) * | 2022-09-23 | 2022-12-27 | 北京工业大学 | Wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator |
| CN116464168A (en) * | 2023-03-20 | 2023-07-21 | 广州大学 | Vibration isolation support with adjustable dynamic stiffness and installation method thereof |
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| CN210034259U (en) * | 2019-05-10 | 2020-02-07 | 北京工业大学 | Quasi-zero stiffness low-frequency vibration isolator with piezoelectric energy harvesting function |
| US20200072313A1 (en) * | 2018-08-28 | 2020-03-05 | National Applied Research Laboratories | Vertical vibration isolation system |
| CN112460177A (en) * | 2020-11-17 | 2021-03-09 | 中国科学院上海光学精密机械研究所 | Quasi-zero stiffness vibration isolator capable of adaptively adjusting negative stiffness |
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2021
- 2021-03-26 CN CN202110322860.7A patent/CN112963478A/en active Pending
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|---|---|---|---|---|
| CN101225865A (en) * | 2007-12-26 | 2008-07-23 | 西安交通大学 | Single-degree-of-freedom ultralow frequency vertical vibration isolation system |
| CN202132428U (en) * | 2011-06-29 | 2012-02-01 | 湖南大学 | Nonlinear magnetic vibration isolator with para-zero rigidity |
| CN105257778A (en) * | 2015-11-23 | 2016-01-20 | 上海理工大学 | Multi-degree-of-freedom low-frequency vibration-isolation gasket |
| CN106402267A (en) * | 2016-05-23 | 2017-02-15 | 福州大学 | Extension type quasi-zero stiffness vibration isolator and implementation method thereof |
| US20200072313A1 (en) * | 2018-08-28 | 2020-03-05 | National Applied Research Laboratories | Vertical vibration isolation system |
| CN209146216U (en) * | 2018-10-24 | 2019-07-23 | 苏州长菱测试技术有限公司 | A kind of ultralow frequency big displacement passive vibration isolation device |
| CN109505918A (en) * | 2018-12-27 | 2019-03-22 | 哈尔滨工业大学 | A kind of quasi-zero stiffness vibration isolators based on translot spring |
| CN210034259U (en) * | 2019-05-10 | 2020-02-07 | 北京工业大学 | Quasi-zero stiffness low-frequency vibration isolator with piezoelectric energy harvesting function |
| CN110388408A (en) * | 2019-08-30 | 2019-10-29 | 国网湖南省电力有限公司 | A kind of negative stiffness can harmonize zero stiffness isolation mounting and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114273675A (en) * | 2021-12-28 | 2022-04-05 | 北京星航机电装备有限公司 | Additive manufacturing method adopting non-contact dimensional shape |
| CN114273675B (en) * | 2021-12-28 | 2023-11-07 | 北京星航机电装备有限公司 | Material increase manufacturing method adopting non-contact dimension |
| CN115523254A (en) * | 2022-09-23 | 2022-12-27 | 北京工业大学 | Wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator |
| CN116464168A (en) * | 2023-03-20 | 2023-07-21 | 广州大学 | Vibration isolation support with adjustable dynamic stiffness and installation method thereof |
| WO2024192932A1 (en) * | 2023-03-20 | 2024-09-26 | 广州大学 | Vibration isolation support having adjustable rigidity and mounting method therefor |
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Application publication date: 20210615 |
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