CN112963487A - Piston type molecular spring vibration isolator - Google Patents
Piston type molecular spring vibration isolator Download PDFInfo
- Publication number
- CN112963487A CN112963487A CN202110091107.1A CN202110091107A CN112963487A CN 112963487 A CN112963487 A CN 112963487A CN 202110091107 A CN202110091107 A CN 202110091107A CN 112963487 A CN112963487 A CN 112963487A
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- CN
- China
- Prior art keywords
- molecular spring
- piston
- vibration isolator
- type molecular
- spring vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000002209 hydrophobic effect Effects 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000012621 metal-organic framework Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 4
- 238000013016 damping Methods 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 12
- 230000003068 static effect Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
-
- 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
-
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0266—Materials; Material properties solids porosity
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
本发明涉及一种活塞式分子弹簧隔振器,包括:底座、腔体盖、活塞杆、密封座和限位座。本发明提供的活塞式分子弹簧隔振器,采用活塞的伸缩结构传递振动,从而避免传统橡胶的强度差的问题,也不存在金属与橡胶的摩擦,保障隔振器内部高承压,具有大阻尼、低刚度、高承载三个标志性特点。
The invention relates to a piston type molecular spring vibration isolator, comprising: a base, a cavity cover, a piston rod, a sealing seat and a limit seat. The piston-type molecular spring vibration isolator provided by the invention adopts the expansion and contraction structure of the piston to transmit vibration, thereby avoiding the problem of poor strength of traditional rubber, and there is no friction between metal and rubber. Damping, low stiffness, high load-bearing three iconic features.
Description
Technical Field
The invention relates to a piston type molecular spring vibration isolator, and belongs to the technical field of vibration dampers.
Background
The molecular spring vibration isolation technology is characterized in that water and a porous hydrophobic material are utilized to form a molecular spring mixed medium, when pressure is applied to the molecular spring mixed medium, water molecules can enter hydrophobic nanometer micropores of the porous hydrophobic material, and when the pressure is unloaded, the water molecules escape from the micropores, so that energy storage and release are realized, and vibration is eliminated.
Some vibration isolators designed using molecular spring vibration isolation technology have been available in the prior art. Most of these vibration isolators adopt a rubber bladder structure or a metal piston rod combined rubber bladder/rubber membrane structure.
Since the vibration isolators are high pressure devices (about 20MPa to 30 MPa), the rubber is not strong enough to maintain high pressure for a long time, and thus the life is extremely short.
The combined structure of the metal piston rod and the rubber bag/rubber membrane has the problem that the friction between the piston rod and the rubber is overlarge, so that the dynamic stiffness of the molecular spring vibration isolator is overlarge, the natural frequency of a vibration isolation system is influenced, and the vibration isolation performance of the vibration isolator is further influenced.
Disclosure of Invention
The invention aims to solve the technical problems that: the defects of the technology are overcome, and the piston type molecular spring vibration isolator is provided.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a piston molecular spring vibration isolator comprising: the device comprises a base, a cavity cover, a piston rod, a sealing seat and a limiting seat; the base and the cavity cover are fixedly connected to form a cavity; the sealing seat is positioned at the top of the cavity and is fixedly connected with the cavity cover; the limiting seat is positioned at the top of the cavity cover and is fixedly connected with the cavity cover; the piston rod penetrates through the limiting seat and the sealing seat from top to bottom; the bottom end of the piston rod is positioned in the cavity, the top end of the piston rod is exposed out of the top of the limiting seat, and the piston rod and the sealing seat are movably sealed; and the cavity is filled with water and a molecular spring material.
The scheme is further improved in that: the base is provided with an opening, and a plug is arranged on the opening.
The scheme is further improved in that: the piston rod and the sealing seat are sealed through a plurality of universal plug seals.
The scheme is further improved in that: the base and the cavity cover are sealed through an O-shaped ring.
The scheme is further improved in that: the sealing seat and the cavity cover are sealed through an O-shaped ring.
The scheme is further improved in that: the molecular spring material is one or a mixture of several particles of hydrophobic zeolite, hydrophobic silica gel and hydrophobic metal organic framework material.
The scheme is further improved in that: the pores of the molecular spring material are micropores with the pore diameter of less than 2nm, or mesopores with the pore diameter of 2 to 50nm, or macropores with the pore diameter of more than 50 nm.
The scheme is further improved in that: the water can be supplemented with inorganic salts or surfactants or a mixture of both.
The scheme is further improved in that: the working pressure is 10 Mpa-200 Mpa.
The piston type molecular spring vibration isolator provided by the invention has the advantages that the telescopic structure of the piston is adopted to transmit vibration, so that the problem of poor strength of the traditional rubber is solved, the friction between metal and rubber does not exist, the high pressure bearing in the vibration isolator is ensured, and the piston type molecular spring vibration isolator has the three characteristic characteristics of large damping, low rigidity and high bearing capacity.
Drawings
The invention will be further explained with reference to the drawings.
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Figure 2 is a schematic illustration of the static equilibrium positions of the molecular spring isolator and the linear isolator under the same load.
Figure 3 is a force transfer curve comparison of a molecular spring isolator to a linear system.
Figure 4 is a graph comparing the displacement transmissibility of the molecular spring isolator to that of a linear system.
Detailed Description
Examples
The piston type molecular spring vibration isolator of the embodiment, as shown in fig. 1, comprises: the device comprises a base 3, a cavity cover 4, a piston rod 11, a sealing seat 6 and a limiting seat 9; the base 3 and the cavity cover 4 are fixedly connected through a bolt 2 to form a cavity; the sealing seat 6 is positioned at the top of the cavity and is fixedly connected with the cavity cover 4 through a bolt 7; the limiting seat 9 is positioned at the top of the cavity cover 4 and is fixedly connected with the cavity cover 4 through a bolt 10; the piston rod 11 penetrates through the limiting seat 9 and the sealing seat 6 from top to bottom; the bottom end of the piston rod 11 is positioned in the cavity, the top end of the piston rod is exposed out of the top of the limiting seat 9, and the piston rod 11 and the sealing seat 6 are movably sealed; the cavity is filled with water and molecular spring material. The base 3 is provided with an opening, and a plug 1 is arranged on the opening.
The piston rod 11 and the sealing seat 6 are sealed by two universal plug seals 12. The base 3 and the chamber cover 4 are sealed by an O-ring 5. The sealing seat 6 and the cavity cover 4 are sealed by an O-shaped ring 8.
The molecular spring material is one or a mixture of several particles of hydrophobic zeolite, hydrophobic silica gel and hydrophobic metal organic framework material. The pore diameter of the molecular spring material is micropore smaller than 2nm, or mesopore of 2-50 nm, or macropore with pore diameter larger than 50 nm. And selecting materials with different apertures according to the required pressure, wherein the working pressure is between 10Mpa and 200 Mpa.
The addition of the surfactant in the water can reduce the working pressure and the bearing capacity; the addition of inorganic salts and surfactants to water lowers the freezing point of water for use in environments with temperatures below zero degrees centigrade.
Inorganic salt is added into the water, so that the working pressure can be improved for improving the bearing capacity; the addition of the surfactant in the water can reduce the working pressure and the bearing capacity; the addition of inorganic salts and surfactants to water lowers the freezing point of water for use in environments with temperatures below zero degrees centigrade.
The base 3 and the cavity cover 4 bear stress and play a role in strength; the cavity plays a deformation role, and the volume of the cavity is driven to change through the movement of the piston rod 11, so that water and a molecular spring material are compressed and released, and the vibration isolation and buffering effects are achieved.
Since the flexible material is not used as the deformation structure in this embodiment, the defect of the flexible material itself, such as a bladder made of a rubber material, can be avoided.
In the field of vibration isolation, it is desirable that the elastic element is as soft as possible to lower the natural frequency of the system to obtain a wider vibration isolation frequency band and a lower vibration transmission rate, however, in engineering, an over-soft spring tends to bring about an excessive static displacement while requiring a sufficiently large installation space, and therefore, actual vibration isolation is often a compromise between the requirement of load capacity and the vibration isolation performance. Due to the unique segmental stiffness characteristic, the molecular spring vibration isolator has the stiffness characteristics of high static stiffness and low dynamic stiffness, so that high bearing capacity and low working stiffness can be considered.
Fig. 2 compares the static equilibrium position of the molecular spring vibration isolator with that of the conventional linear vibration isolation damper under the same load, and for the sake of comparison, the molecular spring vibration isolator adopts equivalent linearized stiffness. Compared with a linear vibration isolator, the molecular spring vibration isolator has obvious advantages. In a static balance state, if the static displacement is the same as that of the molecular spring vibration isolator, the rigidity of the linear vibration isolator is far greater than that of the working section of the molecular spring vibration isolator, and the vibration isolation frequency range is reduced; if the vibration isolation effect identical to that of the molecular spring vibration isolator is required to be obtained, the static displacement of the static balance position of the linear vibration isolator is far larger than that of the molecular spring vibration isolator, so that the requirement on installation space is greatly increased. Fig. 2 is only an example of a load of 730Kg, and if the load reaches several tons or even several tens of tons, the difference is more significant.
As shown in fig. 3, the force transmissibility curves of the molecular spring vibration isolator and the linear system are compared; as shown in fig. 4, the displacement transmittance curves of the molecular spring vibration isolator and the linear system are compared.
The present invention is not limited to the above-described embodiments. All technical solutions formed by equivalent substitutions fall within the protection scope of the claims of the present invention.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110091107.1A CN112963487A (en) | 2021-01-22 | 2021-01-22 | Piston type molecular spring vibration isolator |
Applications Claiming Priority (1)
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CN202110091107.1A CN112963487A (en) | 2021-01-22 | 2021-01-22 | Piston type molecular spring vibration isolator |
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CN112963487A true CN112963487A (en) | 2021-06-15 |
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CN202110091107.1A Pending CN112963487A (en) | 2021-01-22 | 2021-01-22 | Piston type molecular spring vibration isolator |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114909427A (en) * | 2022-04-24 | 2022-08-16 | 中国人民解放军92578部队 | Monomer capsule membrane type molecular spring vibration isolator and assembling method |
CN114923647A (en) * | 2022-06-02 | 2022-08-19 | 电力规划总院有限公司 | Piston hydraulic cylinder type molecular spring stiffness testing device and method |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103256333A (en) * | 2013-05-16 | 2013-08-21 | 南京航空航天大学 | Molecular spring vibration isolation buffering technology |
CN203442037U (en) * | 2013-07-31 | 2014-02-19 | 南京航空航天大学 | Molecule spring vibration isolation buffering device |
CN105041949A (en) * | 2015-07-24 | 2015-11-11 | 南京航空航天大学 | Membrane type molecular spring vibration isolation buffer |
CN105041943A (en) * | 2015-07-24 | 2015-11-11 | 南京航空航天大学 | Bladder type molecular spring vibration isolation buffer |
CN106801716A (en) * | 2017-04-05 | 2017-06-06 | 陈前 | A kind of Mechanical molecular spring vibration isolation buffer unit |
RU2651396C1 (en) * | 2017-08-04 | 2018-04-19 | Олег Савельевич Кочетов | Supporting type rubber metal vibration isolator with damper |
CN108223673A (en) * | 2017-12-08 | 2018-06-29 | 南京航空航天大学 | A kind of light-duty machinery molecule spring vibration isolation buffer unit |
CN109667881A (en) * | 2018-12-07 | 2019-04-23 | 中国飞机强度研究所 | A kind of protecting against shock friction vibration isolator |
-
2021
- 2021-01-22 CN CN202110091107.1A patent/CN112963487A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103256333A (en) * | 2013-05-16 | 2013-08-21 | 南京航空航天大学 | Molecular spring vibration isolation buffering technology |
CN203442037U (en) * | 2013-07-31 | 2014-02-19 | 南京航空航天大学 | Molecule spring vibration isolation buffering device |
CN105041949A (en) * | 2015-07-24 | 2015-11-11 | 南京航空航天大学 | Membrane type molecular spring vibration isolation buffer |
CN105041943A (en) * | 2015-07-24 | 2015-11-11 | 南京航空航天大学 | Bladder type molecular spring vibration isolation buffer |
CN106801716A (en) * | 2017-04-05 | 2017-06-06 | 陈前 | A kind of Mechanical molecular spring vibration isolation buffer unit |
RU2651396C1 (en) * | 2017-08-04 | 2018-04-19 | Олег Савельевич Кочетов | Supporting type rubber metal vibration isolator with damper |
CN108223673A (en) * | 2017-12-08 | 2018-06-29 | 南京航空航天大学 | A kind of light-duty machinery molecule spring vibration isolation buffer unit |
CN109667881A (en) * | 2018-12-07 | 2019-04-23 | 中国飞机强度研究所 | A kind of protecting against shock friction vibration isolator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114909427A (en) * | 2022-04-24 | 2022-08-16 | 中国人民解放军92578部队 | Monomer capsule membrane type molecular spring vibration isolator and assembling method |
CN114909427B (en) * | 2022-04-24 | 2023-05-23 | 中国人民解放军92578部队 | Single-body capsule type molecular spring vibration isolator and assembly method |
CN114923647A (en) * | 2022-06-02 | 2022-08-19 | 电力规划总院有限公司 | Piston hydraulic cylinder type molecular spring stiffness testing device and method |
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