CN216111915U - Quasi-zero rigidity combined ultralow frequency vibration reduction system - Google Patents
Quasi-zero rigidity combined ultralow frequency vibration reduction system Download PDFInfo
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- CN216111915U CN216111915U CN202122219548.3U CN202122219548U CN216111915U CN 216111915 U CN216111915 U CN 216111915U CN 202122219548 U CN202122219548 U CN 202122219548U CN 216111915 U CN216111915 U CN 216111915U
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- air spring
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- bottom plate
- damping system
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Abstract
The utility model provides a quasi-zero stiffness combined ultralow frequency vibration damping system which can be suitable for vibration damping in the horizontal direction and the vertical direction, reduce the natural frequency of the system, increase the vibration damping efficiency and reduce the occurrence of resonance. The air spring damping device comprises an air spring, a top supporting platform and a bottom plate, wherein the air spring is vertically arranged, the top supporting platform is installed above the air spring, the bottom plate is installed below the air spring, a bearing platform is further connected between the top supporting platform and the air spring, a side baffle is arranged on the outer side of the air spring, the bearing platform is connected with the side baffle through an elastic element group horizontally arranged, the elastic element group comprises elastic elements which are oppositely arranged on the side portion of the bearing platform, and a damping part is further arranged between the bearing platform and the bottom plate.
Description
Technical Field
The utility model relates to the technical field of vibration absorbers, in particular to a quasi-zero rigidity combined ultralow frequency vibration attenuation system.
Background
With the development of science and technology, the requirement of precision equipment on vibration is higher and higher, and the development of the vibration reduction industry is promoted, wherein the air spring achieves the vibration reduction effect by matching the elastic force generated by air compression with the flexible deformation of rubber, and the air spring is widely applied to precision equipment such as automobiles, spaceflight, semiconductors and the like due to the lower frequency and the excellent vibration reduction performance of the air spring. When the air spring is actually used, the air spring has an excellent damping effect on the vertical direction, but is limited in the horizontal direction, and the air spring easily generates a resonance phenomenon in a corresponding frequency band due to the existence of the natural frequency of the air spring.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems that when the air spring is used for damping, the damping effect on a single direction is obvious and resonance is easy to generate, the utility model provides a quasi-zero stiffness combined ultralow frequency damping system which can be suitable for damping in the horizontal direction and the vertical direction, and can reduce the natural frequency of the system, increase the damping efficiency and reduce the resonance.
The technical scheme is as follows: the utility model provides a quasi-zero rigidity combination ultralow frequency vibration damping system, its includes the air spring of vertical setting, install the top supporting bench in the air spring top, install the bottom plate below the air spring, its characterized in that: the air spring support structure is characterized in that a bearing platform is further connected between the top supporting platform and the air spring, a side baffle is arranged on the outer side of the air spring, the bearing platform is connected with the side baffle through an elastic element group which is horizontally arranged, the elastic element group comprises elastic elements which are oppositely arranged on the side portion of the bearing platform, and a damping piece is further arranged between the bearing platform and the bottom plate.
It is further characterized in that:
the side baffles are distributed around the air spring, and the periphery of the side part of the bearing platform is connected with the side baffles through the elastic elements;
the damping part comprises a storage container arranged on the bottom plate, hydraulic oil is arranged in the storage container, the bottom of the bearing platform is connected with a horizontal baffle and a vertical baffle through connecting rods, and the horizontal baffle and the vertical baffle are respectively positioned in the hydraulic oil;
the hydraulic oil is high-viscosity index hydraulic oil;
the bottom of the air spring is connected with the bottom plate, and the top of the air spring is connected with the top support platform through a support strut;
the elastic element is a steel spring.
Has the advantages that: when the system is subjected to transverse vibration, the self-stretching and reciprocating force of the elastic element group arranged horizontally is reduced, when the system is subjected to vertical vibration, the deformation of the air spring is reduced, meanwhile, the system is a positive and negative stiffness quasi-zero stiffness vibration reduction system consisting of the horizontal elastic element and the vertical air spring, the positive and negative stiffness of the steel spring and the positive and negative stiffness of the air spring are neutralized, the system is quasi-zero stiffness, the inherent frequency is reduced at the moment, and an ultralow frequency vibration reduction system is formed, so that the occurrence of resonance is reduced; in addition, vibration energy can be reduced while vibration is reduced by arranging the damping piece, and the vibration reduction effect is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic top view.
Detailed Description
As shown in fig. 1 and 2, the quasi-zero stiffness combined ultra-low frequency vibration damping system comprises an air spring 8 vertically arranged, a top support platform 1 installed above the air spring 8, and a bottom plate 6 installed below the air spring 8, wherein a bearing platform 7 is further connected between the top support platform 1 and the air spring 8, a side baffle 4 is arranged on the outer side of the air spring 8, the bearing platform 7 is connected with the side baffle 4 through an elastic element group horizontally arranged, the elastic element group comprises elastic elements 3 (steel springs in the scheme) relatively arranged on the side portion of the bearing platform 7, preferably, the steel springs are distributed around the bearing platform 7 as shown in the figure, and a damping member 5 is further arranged between the bearing platform 7 and the bottom plate 6.
The system can replace an air spring which is used independently to be installed between a bearing object and a foundation, a top supporting platform 1 is connected with the bottom of the bearing object, a bottom plate 6 is installed on the foundation, meanwhile, the air spring and a side baffle are connected to the bottom plate 6, then, a bearing platform 7 is installed on the air spring and is connected with the top supporting platform 1 through a supporting pillar 2, the side portion of the bearing platform 7 is hinged to a steel spring, and meanwhile, a damping piece 5 is installed between the bottom of the bearing platform 7 and the bottom plate 6 to play a role in buffering and vibration reduction.
When a load-bearing object vibrates, the load-bearing object is transmitted to a load-bearing platform 7, transverse vibration is reduced by self stretching and reciprocating force of a steel spring system on the periphery of the platform, vertical vibration is reduced by deformation of an air spring, the system is a positive and negative stiffness quasi-zero stiffness vibration reduction system consisting of the steel spring and the air spring vibration reduction system, wherein during vertical vibration, negative stiffness is an elastic element, positive stiffness is an air spring, when horizontal vibration occurs, the elastic deformation force of the air spring generates a negative stiffness system, and the elastic element stretches out and draws back the elastic force to form a positive and negative stiffness combined system. In addition, vibration contacts with the bottom plate damping system through the bearing platform 7, the damping of the whole system can be increased, the quasi-zero rigidity is combined with the damping, and vibration energy can be reduced while the vibration is reduced.
In addition, damping piece 5 is including setting up storage container 51 on bottom plate 6, storage container 51 embeds there is hydraulic oil, bearing platform 7 bottom is passed through connecting rod 52 and horizontal baffle 53, vertical baffle 54 is connected, horizontal baffle 53 and vertical baffle 54 are located the hydraulic oil respectively, preferred hydraulic oil is high viscosity index hydraulic oil (for example jia shi spin AWH-M46 high viscosity hydraulic oil), when vertical vibration takes place like this, horizontal baffle 53 produces the damping resistance vibration energy in the hydraulic oil, when horizontal (horizontal) vibration takes place, vertical baffle 54 produces the resistance damping vibration energy in the hydraulic oil, thereby can both play good damping effect in each condition.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a quasi-zero rigidity combination ultralow frequency vibration damping system, its includes the air spring of vertical setting, install the top supporting bench in the air spring top, install the bottom plate below the air spring, its characterized in that: the air spring support structure is characterized in that a bearing platform is further connected between the top supporting platform and the air spring, a side baffle is arranged on the outer side of the air spring, the bearing platform is connected with the side baffle through an elastic element group which is horizontally arranged, the elastic element group comprises elastic elements which are oppositely arranged on the side portion of the bearing platform, and a damping piece is further arranged between the bearing platform and the bottom plate.
2. The combined quasi-zero stiffness ultra-low frequency damping system according to claim 1, wherein: the side baffles are distributed on the periphery of the air spring, and the periphery of the side part of the bearing platform is connected with the side baffles through the elastic elements.
3. The combined quasi-zero stiffness ultra-low frequency damping system according to claim 1 or 2, wherein: the damping piece is including setting up in storage container on the bottom plate, storage container embeds has the ultralow frequency vibration damping system of the zero combination of hydraulic oil quasi, bearing platform bottom is connected with horizontal baffle, vertical baffle through the connecting rod, horizontal baffle with vertical baffle is located respectively in the hydraulic oil.
4. A quasi-zero stiffness combined ultra-low frequency vibration damping system according to claim 3, wherein: the hydraulic oil is high-viscosity index hydraulic oil.
5. The combined quasi-zero stiffness ultra-low frequency damping system according to claim 1, wherein: the bottom of the air spring is connected with the bottom plate, and the top of the air spring is connected with the top support platform through a support pillar.
6. The combined quasi-zero stiffness ultra-low frequency damping system according to claim 1, wherein: the elastic element is a steel spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122219548.3U CN216111915U (en) | 2021-09-14 | 2021-09-14 | Quasi-zero rigidity combined ultralow frequency vibration reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122219548.3U CN216111915U (en) | 2021-09-14 | 2021-09-14 | Quasi-zero rigidity combined ultralow frequency vibration reduction system |
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| CN216111915U true CN216111915U (en) | 2022-03-22 |
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| CN202122219548.3U Active CN216111915U (en) | 2021-09-14 | 2021-09-14 | Quasi-zero rigidity combined ultralow frequency vibration reduction system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138174A (en) * | 2018-09-28 | 2019-01-04 | 佛山科学技术学院 | A kind of suspension type energy consumption shock isolating pedestal |
| CN114811434A (en) * | 2022-05-10 | 2022-07-29 | 北京金海鑫压力容器制造有限公司 | LNG gasification pressure regulating sled |
-
2021
- 2021-09-14 CN CN202122219548.3U patent/CN216111915U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138174A (en) * | 2018-09-28 | 2019-01-04 | 佛山科学技术学院 | A kind of suspension type energy consumption shock isolating pedestal |
| CN109138174B (en) * | 2018-09-28 | 2023-10-31 | 佛山科学技术学院 | Suspension type energy consumption shock insulation support |
| CN114811434A (en) * | 2022-05-10 | 2022-07-29 | 北京金海鑫压力容器制造有限公司 | LNG gasification pressure regulating sled |
| CN114811434B (en) * | 2022-05-10 | 2024-03-12 | 北京金海鑫压力容器制造有限公司 | LNG gasification pressure regulating sled |
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