CN114483866B - Electromagnetic damping coupled spring vibration isolator - Google Patents

Electromagnetic damping coupled spring vibration isolator Download PDF

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CN114483866B
CN114483866B CN202210177228.2A CN202210177228A CN114483866B CN 114483866 B CN114483866 B CN 114483866B CN 202210177228 A CN202210177228 A CN 202210177228A CN 114483866 B CN114483866 B CN 114483866B
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spring
magnetic material
damping
electromagnetic
generating unit
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CN114483866A (en
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翟国庆
王逸航
李军
何建龙
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Zhejiang Lixin Zhongzhi Acoustic Technology Co ltd
Zhejiang University ZJU
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Zhejiang Lixin Zhongzhi Acoustic Technology Co ltd
Zhejiang University ZJU
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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
    • F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
    • F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
    • F16F15/085—Use of both rubber and metal springs
    • 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
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/06—Magnetic or electromagnetic
    • 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
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/12—Fluid damping
    • 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
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/022—Springs leaf-like, e.g. of thin, planar-like metal
    • 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
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/026—Springs wound- or coil-like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses a spring vibration isolator for coupling electromagnetic damping, which comprises a spring vibration isolation unit, wherein the spring vibration isolation unit comprises a load platform, a spring and a base from top to bottom; the horizontal magnetic field generating unit is a magnetic material array, and the electromagnetic damping generating unit comprises a conductor plate and magnetic material rods vertically arranged on the conductor plate at intervals. The electromagnetic damping of the invention has no problems of friction, liquid leakage and the like, and has excellent vibration isolation performance.

Description

Electromagnetic damping coupled spring vibration isolator
Technical Field
The invention relates to the technical field of environmental vibration and noise control, in particular to a spring vibration isolator coupled with electromagnetic damping.
Background
Equipment vibration can cause equipment wear, reduce equipment life, and the vibration is propagated through solid such as rigid connection, ground or building simultaneously, can produce vibration and secondary radiation noise pollution. To reduce vibration pollution, vibration isolators are typically installed at the bottom of the equipment to isolate the equipment from vibrations. The spring vibration isolator is widely used in the field of vibration isolation of equipment due to the advantages of low natural frequency, high rigidity, strong loading capacity and the like.
The spring vibration isolator is characterized in that the spring vibration isolator is of a multi-layer structure and is formed by overlapping a plurality of vibration isolation units, each vibration isolation unit comprises an elastic layer and a partition plate, the spring vibration isolator forms a structure in which the elastic layers and the partition plates are alternately overlapped, the thickness of each elastic layer is set to be smaller than 20mm, and the rigidity and the heat conductivity coefficient of each partition plate are larger than those of the elastic layers.
Or as disclosed in patent specification with publication number CN203488613U, an adjustable preload damping spring vibration isolator is composed of a damping spring vibration isolator, an adjustable preload component, a height adjustment structure and a preload indication device, wherein the adjustable preload component is positioned between the damping spring vibration isolator and the height adjustment structure, the preload indication device is installed at the outer side of the adjustable preload component, and the damping spring vibration isolator is composed of a rubber friction sound insulation pad, a base, a rubber damping sleeve, a spiral steel spring and a positioning plate; the adjustable preload component consists of an internal threaded pipe, a prepressing screw rod, a rubber tooth-shaped round hole damping sleeve and a gasket; the height adjusting structure consists of an upper cover plate, a screw rod, a circular bearing body, a fixing plate and a horizontal height adjusting bolt; the preload indicating device is composed of a marking scale and a marking rod.
By adopting vibration isolation measures (installing vibration isolators) on the equipment, unbalanced force (vibration) transmitted to the ground by the equipment can be reduced, and the influence of the vibration on the surrounding environment is reduced. After the vibration isolation measures are taken, in addition to paying attention to the vibration isolation efficiency (namely, reducing the force transmitted to the ground), the vibration amplitude of the equipment itself after the vibration isolation measures are taken needs to be controlled.
Damping is one of the important factors affecting vibration isolation efficiency and vibration amplitude of the object to be vibration isolated. When the vibration frequency f is equal to the natural frequency f of the system 0 Ratio of less than
Figure BDA0003520771980000021
At the same time, dampingThe larger the ratio, the higher the vibration damping efficiency. When the vibration frequency f is close to the natural frequency f of the system 0 When the vibration is absorbed, the amplitude of the equipment to be isolated is mainly controlled by damping, and the larger the damping is, the smaller the vibration is. The spring vibration isolator has a low damping coefficient and is difficult to meet the requirements, so that the damper and the vibration isolator are usually installed at the same time.
Common dampers include tuned mass dampers, metal dampers, viscous dampers, viscoelastic dampers, electromagnetic dampers and the like, wherein the electromagnetic dampers based on permanent magnets do not have the problems of friction, liquid leakage and the like because conductors are not in direct contact with magnets.
Disclosure of Invention
The invention aims to provide a spring vibration isolator for coupling electromagnetic damping, which does not have the problems of friction, liquid leakage and the like and has excellent vibration isolation performance.
A spring vibration isolator for coupling electromagnetic damping comprises a spring vibration isolation unit, wherein the spring vibration isolation unit comprises a load platform, a spring and a base from top to bottom, and further comprises a horizontal magnetic field generating unit arranged outside the spring and an electromagnetic damping generating unit arranged between the horizontal magnetic field generating unit and the spring and suspended under the load platform in an insulating manner; the horizontal magnetic field generating unit is a magnetic material array, and the electromagnetic damping generating unit comprises a conductor plate and magnetic material rods vertically arranged on the conductor plate at intervals.
The spring has lower natural frequency, and the up end is fixed connection with load platform, and lower terminal surface and base fixed connection.
Preferably, the magnetic material array consists of two groups of vertically stacked permanent magnets positioned on two sides of the spring; the magnetizing directions of two adjacent permanent magnets on the same side are different by 90 degrees, and the magnetizing directions of two opposite permanent magnets on the two sides are different by 180 degrees.
Specifically, the two sides of the spring respectively form a magnetic material array by 4 vertically stacked permanent magnets, the lower end face of the horizontal magnetic field generating unit is fixedly connected with the base, and a horizontal magnetic field is generated between the magnetic material arrays.
Preferably, the conductor plates are a plurality of conductor plates arranged at intervals, perforations are arranged at intervals on the conductor plates, and the magnetic material rods are embedded in the perforations.
Preferably, the thickness and the spacing of the plurality of conductor plates are equal or unequal.
Preferably, the surface of the magnetic material rod is provided with a clamping groove for adjusting the horizontal distance between the conductor plates and fixing the magnetic material rod.
Specifically, the conductor plates are two or more, and have high electrical conductivity and low magnetic permeability. The magnetic material rod is specifically a ferromagnetic material rod, a gap is reserved between the ferromagnetic material rod and the conductor plate, and the ferromagnetic material rod and the conductor plate are fixed through a clamping groove on the surface of the ferromagnetic material rod. The horizontal distance between the conductor plates is adjusted through the clamping groove.
The electromagnetic damping generation unit is suspended below the load platform in an insulating mode, specifically, an insulating sleeve is mounted outside a ferromagnetic material rod closest to the load platform, and penetrates through an insulating suspension hole formed in the bottom of the load platform and is fixed.
Preferably, the cross section of the magnetic material rod is circular, square or polygonal, the magnetic material rod is parallel to the horizontal plane or forms a certain included angle with the horizontal plane, and the intervals of the magnetic material rods are equal or unequal.
Preferably, the spring vibration isolator further comprises a throttling damping generation unit arranged in the spring, and the throttling damping generation unit comprises a sleeve, two connecting rods, a piston with a throttling hole and damping liquid;
one end of one connecting rod is connected with the piston, and the other end of the connecting rod is connected with the load platform; one end of the other connecting rod is connected with the bottom of the sleeve, and the other end of the other connecting rod is connected with the base; the inner cavity of the sleeve is divided into two parts by the piston, and damping fluid flows between the two parts through the throttling hole on the piston.
Preferably, an electromagnetic shielding means is provided outside the horizontal magnetic field generating means.
The electromagnetic shielding unit is a high-permeability diamagnetic sleeve with two open ends. The lower end of the diamagnetic sleeve made of the high-permeability material is fixed on the base.
Preferably, a buffer unit is disposed on the top of the horizontal magnetic field generating unit.
The buffer unit is specifically a rubber block. The rubber block lower extreme links to each other with horizontal magnetic field produces the unit upper end, and when setting up electromagnetic shield unit, the rubber block lower extreme links to each other with electromagnetic shield unit upper end also, and the rubber block upper end keeps certain space with load platform.
The optimal initial position is determined in such a way that after the spring vibration isolator bears the rated static load, the distance between the bottom of the load platform and the top of the buffer unit is the same as the set maximum displacement value of the spring vibration isolator.
Preferably, an insulating unit is arranged between the top of the load platform and the spring and between the top of the load platform and the base.
The working principle of the coupled electromagnetic damping spring vibration isolator is as follows:
when the load platform vibrates under the action of external force, the load platform vibrates to drive the connecting rod of the throttling damping generation unit and the electromagnetic damping generation unit to vibrate. The connecting rod vibrates to enable damping liquid to flow between the two cavities through the throttling hole in the piston, and viscous damping force opposite to the vibration direction of the load platform is generated. The electromagnetic damping generating unit vibrates to enable the conductor plate and the magnetic material array to move relatively, the conductor plate cuts magnetic lines of force to generate eddy current (induced current), and the eddy current interacts with a magnetic field generated by the magnetic material array to generate electromagnetic damping force (ampere force or Lorentz force) opposite to the moving direction of the load platform.
The invention has the beneficial effects that:
(1) The eddy current is generated by adopting a plurality of thin conductor plates instead of a single thick conductor plate, so that the intensity of the induced current in the conductor plates is improved.
(2) And a ferromagnetic material rod is inserted into the conductor plate for magnetic conduction, so that the magnetic induction intensity in the conductor plate is improved.
(3) A throttling damping generating unit is further introduced into the spring and is superposed with the electromagnetic damping force, so that a damping force in a larger range can be generated.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1, a spring isolator coupling electromagnetic damping includes: the device comprises a spring vibration isolation unit, a magnetic material array 1, a high-permeability material diamagnetic sleeve 2, a buffer rubber block 3, a ferromagnetic material rod 4, a conductor plate 5, an insulating sleeve and suspension hole 6 and a throttling damping generation unit 8.
The spring vibration isolation unit comprises a load platform 7, a spring 9 and a base 10 from top to bottom, and insulation plates 11 are arranged between the top of the load platform 7 and the spring 9 and the base 10. The upper end face of the spring 9 is fixedly connected with the load platform 7, and the lower end face is fixedly connected with an insulating plate 11 on the base 10. The spring 9 is located in particular inside the conductor plate 5.
The magnetic material array 1 is used for generating a horizontal magnetic field, the lower end of the magnetic material array is fixed on the base 10, the magnetic material array 1 is specifically composed of two groups of vertically stacked permanent magnets positioned on two sides of the spring 9, and each group comprises four permanent magnets. The magnetizing directions of two adjacent permanent magnets on the same side are different by 90 degrees, and the magnetizing directions of two opposite permanent magnets on the two sides are different by 180 degrees.
The diamagnetic sleeve 2 made of the high-permeability material is arranged outside the magnetic material array 1 and used for preventing the magnetic material array 1 from influencing the outside, and the lower end of the diamagnetic sleeve is fixed on the base 10; the buffer rubber block 3 is fixed on the top of the magnetic material array 1 and the anti-magnetic sleeve 2 made of the high-magnetic-permeability material and used for protecting the magnetic material array 1 and preventing the load platform 7 from directly impacting the anti-magnetic sleeve 2 made of the high-magnetic-permeability material to generate overlarge vibration noise.
The conductor plates 5 are debugged to determine the horizontal spacing of the plurality of conductor plates and then are fixed with the ferromagnetic material rods 4 by utilizing the clamping grooves on the surfaces of the ferromagnetic material rods 4. The distance between the conductor plate 5 and the magnetic material array 1 is extremely small. The conductor plate 5 and the ferromagnetic material rod 4 are suspended under the load platform 7 in an insulated manner through the insulating sleeve and the suspension hole 6.
The throttling damping generation unit 8 is positioned in the spring 9 and specifically comprises a sleeve 81, two connecting rods 82, a piston 83 with a throttling hole and damping liquid 84; one end of one connecting rod 82 is connected with the piston 83, and the other end is connected with the load platform 7; one end of the other connecting rod 82 is connected with the bottom of the sleeve 81, and the other end is connected with the insulating plate 11 on the base 10; the internal cavity of the sleeve 81 is divided into two chambers by the piston 83, and the damping fluid 84 flows between the two chambers through orifices in the piston 83.
The vibration of the load platform 7 drives the connecting rod 82 of the throttling damping generation unit 8 and the conductor plate 5 to vibrate. The connecting rod 82 vibrates to cause the damping fluid 84 in the throttle damping unit 8 to flow between the two chambers through the throttle hole in the piston 83, generating a viscous damping force in a direction opposite to the vibration of the load platform 7. The conductor plate 5 vibrates and cuts magnetic lines of force generated by the magnetic material array 1 to generate eddy currents (induced currents), and the eddy currents interact with a magnetic field generated by the magnetic material array 1 to generate electromagnetic damping force (ampere force or lorentz force) opposite to the vibration direction of the load platform 7.
Considering the skin effect, the maximum thickness δ of the single conductor plate 5 can be determined by equation (1)
Figure BDA0003520771980000071
Where ρ is the sheet resistivity, μ 0 ＝4π*10 -7 N/A 2 Is a vacuum permeability,. L p The length of the single permanent magnet in the vertical direction is v, and the relative motion speed between the conductor plate and the magnetic material array (namely the vibration speed of the load platform) is v.
In the implementation, the conductor plate 5 may be made of copper or other materials with high conductivity and low permeability, and the shape of the conductor plate 5 may be various shapes including circular, square or polygonal.
In the specific implementation process, the cross section of the ferromagnetic material rod 4 can be in various shapes including a circle, a square or a polygon, and can be in various forms such as a sheet or a column.
In the specific implementation process, the ferromagnetic material rods 4 may be inserted into the conductor plate 5 in parallel to the horizontal plane, or may be inserted into the conductor plate 5 at a certain angle with the horizontal plane, and the intervals between the ferromagnetic material rods 4 may be equal or unequal.
In a specific implementation, the thickness and the spacing of the plurality of conductor plates 5 may be equal or unequal.
In a specific implementation, the arrangement of the magnetic material array 1 can be various ways including the described embodiment.
In the specific implementation process, the viscous damping generated by the throttling damping generating unit 8 or the electromagnetic damping of the electromagnetic damping generating unit can be used independently, and the two types of damping can also be used simultaneously.
In the implementation process, a magnetic material can be additionally arranged inside the spring 9 and outside the throttling damping generation unit 8 to enhance the magnetic field inside the spring vibration isolator.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.

Claims (6)

1. A spring vibration isolator of coupling electromagnetic damping comprises a spring vibration isolation unit, wherein the spring vibration isolation unit comprises a load platform, a spring and a base from top to bottom; the horizontal magnetic field generating unit is a magnetic material array, and the electromagnetic damping generating unit comprises a conductor plate and magnetic material rods which are vertically arranged on the conductor plate at intervals;
the conductor plates are a plurality of conductor plates arranged at intervals, through holes are arranged on the conductor plates at intervals, and the magnetic material rods are embedded in the through holes; the thickness and the spacing of the plurality of conductor plates are equal or unequal; the surface of the magnetic material rod is provided with a clamping groove for adjusting the horizontal distance of the conductor plates and fixing the magnetic material rod; the cross section of the magnetic material rods is circular, square or polygonal, the magnetic material rods are parallel to the horizontal plane or form a certain included angle with the horizontal plane, and the intervals of the magnetic material rods are equal or unequal.
2. The coupled electromagnetic damped spring isolator of claim 1 wherein the array of magnetic material is comprised of two sets of vertically stacked permanent magnets on either side of the spring; the magnetizing directions of two adjacent permanent magnets on the same side are different by 90 degrees, and the magnetizing directions of two opposite permanent magnets on the two sides are different by 180 degrees.
3. The electromagnetically coupled spring isolator as claimed in claim 1, further comprising a throttle damping generating unit disposed inside the spring, the throttle damping generating unit comprising a sleeve, two connecting rods, a piston with a throttle hole, and a damping fluid;
one end of one connecting rod is connected with the piston, and the other end of the connecting rod is connected with the load platform; one end of the other connecting rod is connected with the bottom of the sleeve, and the other end of the other connecting rod is connected with the base; the inner cavity of the sleeve is divided into two parts by the piston, and damping fluid flows between the two parts through the throttling hole on the piston.
4. The coupled electromagnetic damped spring isolator of claim 1, wherein the horizontal directional magnetic field generating unit is externally provided with an electromagnetic shielding unit.
5. The coupled electromagnetic damped spring isolator of claim 1, wherein a damping unit is disposed on top of the horizontal magnetic field generating unit.
6. The coupled electromagnetic damped spring isolator of claim 1, wherein an insulating unit is disposed between the load platform top, the spring, and the base.
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CN106523586A (en) * 2016-12-30 2017-03-22 青岛科而泰环境控制技术有限公司 Vibration isolation system with back pressing devices
CN108331874A (en) * 2018-03-09 2018-07-27 柳州东方工程橡胶制品有限公司 A kind of spring vibration-isolator
CN108953473A (en) * 2018-08-15 2018-12-07 上海大学 A kind of vibration isolator of achievable horizontal decoupling
CN110848314A (en) * 2019-11-20 2020-02-28 中国人民解放军92578部队 Multifunctional composite vibration isolator
CN112594315A (en) * 2020-05-21 2021-04-02 槃实科技(深圳)有限公司 Magnetic suspension vibration isolator
CN111810585A (en) * 2020-07-24 2020-10-23 上海大学 Combined vibration isolation system

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