CN106678255A - First-order buoyancy magnetic liquid damping vibration absorber for magnetic shielding - Google Patents
First-order buoyancy magnetic liquid damping vibration absorber for magnetic shielding Download PDFInfo
- Publication number
- CN106678255A CN106678255A CN201710000652.9A CN201710000652A CN106678255A CN 106678255 A CN106678255 A CN 106678255A CN 201710000652 A CN201710000652 A CN 201710000652A CN 106678255 A CN106678255 A CN 106678255A
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- China
- Prior art keywords
- permanent magnet
- radome
- magnetic
- magnetic liquid
- mass
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- 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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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
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
-
- 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
- F16F9/3207—Constructional features
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a first-order buoyancy magnetic liquid damping vibration absorber for magnetic shielding, and belongs to the field of mechanical engineering vibration. The problem that existing magnetic liquid damping vibration absorbers cannot be applied in engineering practice due to various structural problems is successfully solved. The first-order buoyancy magnetic liquid damping vibration absorber comprises a shell (1), an upper shielding cover (2), an upper permanent magnet (3), a mass block (4), a lower permanent magnet (5), a lower shielding cove (6) and magnetic liquid (7). When external vibration is produced, the mass block (4) moves in the upper shielding cover and the lower shielding cover, the magnetic liquid (7) flows in the gap between the upper and lower permanent magnets and the mass block (4), and therefore energy is absorbed to achieve the vibration absorption purpose; and a frequency difference is formed between the mass block (4) and the shell (1) due to first-order buoyancy formed by the upper permanent magnet (3) and the lower permanent magnet (5) inside the magnetic liquid (7), and the vibration absorption efficiency reaches the maximum.
Description
Technical field
The invention belongs to mechanical engineering vibration field.
Background technology
Magnetic fluid damper is a kind of passive damper, higher to the sensitivity of inertia force, with simple structure,
The advantages of small volume, big power consumption and life-span length.Due to the special running environment of spacecraft, its own volume, weight and institute
The energy of carrying is subject to certain restrictions, therefore magnetic fluid damper is very suitable for the straight object of Large Spacecraft length
The solar energy sailboard of the vibration damping of low frequency, little amplitude, such as space station, antenna, meanwhile, it also has on the ground wide answering
With prospect, the vibration damping of hundred meters of high powered antenna, vibration damping of precision balance etc. are such as up to.But existing magnetic liquid damping subtracts
Device shake because various structures problem cannot in practice be applied in engineering, particular problem is as follows：
Now most commonly seen magnetic fluid damper mainly using the second order law of buoyancy of magnetic liquid, is such as contrasted
Document 1 (publication number CN102032304A's applies for a patent) is described, (application of publication number CN104074903A is special for documents 2
Profit) described, documents 3 (publication number CN102042359A's applies for a patent) are described, (the publication number of documents 4
CN102494070A with the (publication number of documents 6 described in), described in documents 5 (publication number JP11-230255A)
CN103122965A) described, minority employs the single order law of buoyancy of magnetic liquid, such as (the publication number JP11- of documents 7
223247A's applies for a patent) it is described.
Damper means described in documents 1 (applying for a patent for Publication No. CN102032304A), the vibroshock bag
Include non-magnetic shell, magnetic liquid, permanent magnet, nut, end cap, bolt, screw, sealing gasket and O-ring seal.This application patent
, as mass, magnetic liquid is filled in non-magnetic shell, so as to using magnetic liquid by using the permanent magnet of cylinder
Second order law of buoyancy causes mass to suspend in the housing.When extraneous vibration, the relative motion between mass and housing is made
Flow in gap into magnetic liquid between mass and housing, so as to produce viscous loss.However, subtracting described in the patent
Device shake due to make use of the second order law of buoyancy of magnetic liquid, mass must be permanent magnet, therefore exist in actual applications
Following deficiency：The magnetic field at the firstth, permanent magnet two ends is very strong, and magnetic liquid under the influence of a magnetic field viscosity can be increased dramatically,
Therefore the flowing of the magnetic liquid between permanent magnet and housing will be extremely difficult, so as to, effectiveness in vibration suppression insensitive to inertia force
Difference；The material of the secondth, permanent magnet is generally more crisp, and when Spacecraft Launch rises space-time, acceleration is very big, it is easy to cause permanent magnet
Collision between housing, ultimately results in permanent magnet fragmentation, so as to cause defective shock absorber, therefore does not have practicality.
Damper means described in documents 2 (applying for a patent for Publication No. CN104074903A), the vibroshock bag
Include non-magnetic housing, bolt, nut, permanent magnet, magnetic liquid, non-magnetic shell, O-ring, pore, annular gap etc..The Shen
Please patent be also as mass, to adsorb a small amount of magnetic liquid at permanent magnet two ends, using the second order of magnetic liquid using permanent magnet
Law of buoyancy causes permanent magnet to suspend, by inner walls are processed into into arc-shaped so that magnetic liquid produce elastic force, so as to
So that permanent magnet is all the time in the center of housing, but when permanent magnet is moved along arc-shaped surface, because the bottom surface of permanent magnet is
Plane, it is easy to which housing arcuate inwall occurs wiping and touches, and when acceleration is very big, collision between permanent magnet and housing easily occurs and led
The permanent magnet fragmentation problem of cause, therefore there is no practicality.
Damper means described in documents 3 (applying for a patent for Publication No. CN102042359A), the vibroshock with
Apparatus structure described in documents 1 is similar to, but documents 3 are machined with 4~8 through holes on permanent magnet, and the through hole can be with
So that magnetic liquid flowing is more smooth, and increase friction area.However, due to permanent magnet two ends magnetic field it is very strong, either
The magnetic liquid between magnetic liquid or permanent magnet and housing in through hole all can because viscosity is excessive cannot proper flow,
Therefore the effect processed produced by through hole on permanent magnet is not obvious；Secondly as processing through hole on permanent magnet, increased
The fragility of permanent magnet, when acceleration is very big, permanent magnet fragmentation problem will more caused by the institute of collision between permanent magnet and housing
Plus it is prominent, meanwhile, cylindrical permanent magnet is weaker in the magnetic field that side produces, therefore the centering power for being provided is not enough, therefore does not have
There is practicality.
Damper means described in documents 4 (publication number CN102494070A's applies for a patent), the vibroshock principle
It is similar with the described device principle of documents 1, but housing is processed into hollow ball-shape by the patent described device, and permanent magnet is processed into
Solid spherical.However, simple alteration of form can not solve permanent magnet fragmentation and magnetic liquid between permanent magnet and housing
The problem of flow difficulties, therefore there is no practicality.
Vibroshock described in documents 5 (publication number JP11-230255A's applies for a patent), the vibroshock is a kind of use
In the vibroshock of shaft vibration, it utilizes the second order law of buoyancy of magnetic liquid, using permanent magnet as a gyrating mass block.Though
So the patent is mounted with a ceramic ring 5 to avoid the direct collision of permanent magnet and housing in shell wall side, but due to ceramic
Fragility be much larger than permanent magnet, when bumping against, the easily fragmentation of ceramic ring 5 so as to pollute vibroshock internal chamber so that vibration damping imitate
Fruit declines.Meanwhile, the patent cannot also solve the problems, such as magnetic liquid flow difficulties between permanent magnet and housing, therefore not have
There is practicality.
Damper means described in documents 6 (publication number CN103122965A's applies for a patent), the vibroshock is one
The vibroshock for cutting down solar energy sailboard vibration is planted, the second order law of buoyancy of magnetic liquid is it makes use of, mass is annular
Permanent magnet.The patent by keeping the middle position of permanent magnet with the pad with cone angle, by inner walls bonding along footpath
Prevent the wall that hits of the second annular permanent magnet as mass to the first annular permanent magnet for magnetizing, first annular permanent magnet with
Second annular permanent magnet homopolarity is relative.When during Spacecraft Launch, acceleration greatly, accelerates sometimes more than 10 gravity
When spending, first annular permanent magnet and the less repulsion of the second annular permanent magnet spacing are bigger, can effectively prevent the second annular permanent magnet
Body wallflow of hitting radially is.It is out-of-balance force yet with the repulsion between permanent magnet, therefore the second annular permanent magnet receiving
While to repulsion radially, a torque vertically is also suffered from, therefore during Spacecraft Launch, the torque is very
It is easily caused the second annular permanent magnet to bump against with housing end plug or bottom surface, ultimately results in the second annular permanent magnet fragmentation body, does not have
Practicality.
Damper means described in documents 7 (publication number JP11-223247A's applies for a patent), the vibroshock is one
The vibroshock for cutting down shaft vibration is planted, the single order law of buoyancy of magnetic liquid is it makes use of, mass is non-magnetic for annular
Material, a circle permanent magnet is installed in rotating shaft mass is not circumferentially being shifted.However, the single order for passing through magnetic liquid
Law of buoyancy understands that it is unstable that independent one group of permanent magnet suspends to the material of non-magnetic, it is easy to cause mass to exist
Skew is produced along rotating shaft axial direction and disturb, therefore the patent does not have practical value.
Damper means described in documents 8 (publication number CN104879412A's applies for a patent), the vibroshock passes through
The magnetic field formed using two pieces of relative permanent magnets of homopolarity, is formed single order and selects buoyancy in the container full of magnetic liquid, will
One spherical mass is suspended in inside container, and by carrying out magnetic shield in outside magnetism shielding hood of installing.However, relying solely on two
The magnetic field that the relative permanent magnet of the simple homopolarity of block is formed, it is impossible to be internally formed effective radial force in magnetic liquid so that matter
The extremely easy deflection of gauge block.Simultaneously the vibroshock magnetic liquid must be full of container, cause whole vibroshock quality to increase.
Therefore it is badly in need of that the structure of magnetic fluid damper is redesigned and improved so as to can be in actual work
It is applied in journey.
The content of the invention
The technical problem to be solved in the invention is that existing magnetic fluid damper is caused due to various structures defect
The problems such as easy fragmentation of magnetic liquid flow difficulties, permanent magnet, bad centering effect, not high viscosity energy efficiency and larger quality,
It is set in practice to be applied in engineering.Spy provides a kind of single order buoyancy magnetic fluid damper of magnetic shield.
The technical solution adopted for the present invention to solve the technical problems is：
The vibroshock includes housing, upper radome, upper permanent magnet, mass, lower permanent magnet, lower radome and magnetic liquid
Body.
The upper radome is an inverted concave structure, and the upper surface of upper permanent magnet is arranged on into upper radome
Groove in, and be fixedly connected；The lower radome is a concave structure just put, and the lower surface of lower permanent magnet is pacified
It is mounted in the groove of lower radome, and is fixedly connected.The upper surface of the lower surface of upper permanent magnet and lower permanent magnet is injected separately into
Magnetic liquid.
The upper radome and lower radome are permeability magnetic material, and overall dimensions are identical；The upper permanent magnet is with
The overall dimensions of permanent magnet are identical；The profile of the upper permanent magnet and lower permanent magnet and upper radome and lower radome it is recessed
Groove shape is identical, but is smaller in size than the groove size of radome and lower radome, is that gap coordinates.
The thickness of the upper permanent magnet and lower permanent magnet is less than upper radome and the depth of lower radome groove.By this
Mode, upper and lower permanent magnet can form magnetic loop in upper and lower radome respectively.Meanwhile, magnetic liquid can respectively it is upper,
A magnetic liquid layer for having the conical surface is formed between the groove boss and upper and lower permanent magnet of lower radome.This magnetic liquid layer
Can produce the body force of a very strong sensing origin, therefore can ensure that mass is suspended in radome and lower radome
Among groove.The invention is different from prior art (described device of documents 6) to prevent the second annular permanent magnet from hitting wall institute
Using the relative purpose of first annular permanent magnet and the second annular permanent magnet homopolarity, it also avoid prior art (documents 7
Described device) by installing the perturbed problem that permanent magnet is increased the unstable centering that mass is produced in rotating shaft.Also keep away
Having exempted from prior art (described device of documents 8) cannot be internally formed effective radial force in magnetic liquid so that mass
The problem of extremely easy deflection.In addition, this mode will cause magnetic liquid to refill housing, so that vibroshock
Quality greatly reduce, so as to also thoroughly solve prior art (documents 1,3,4 and 5 described devices) in permanent magnet peace
Be placed on enclosure interior caused by magnetic liquid injection is difficult or even the problem that cannot fill.
The housing is a thin wall cavity structure, and the upper surface that will be equipped with the upper radome of permanent magnet is arranged on housing
The upper surface of inner chamber.The lower surface that will be equipped with the lower radome of lower permanent magnet is arranged on the lower surface of housing cavity.Case material
Non-permeable material can be selected, it is also possible to select magnetic conductive material.
Mass is put in housing, mass is suspended between permanent magnet and lower permanent magnet.
The profile of the mass is identical with the profile of upper radome and lower radome groove, but is smaller in size than radome
With the groove size of lower radome.The gap between gap and mass and lower radome between mass and upper radome
Vibration amplitude should be more than.The mass can be any shape, pref. cylindrical or multi-edge column-shaped, and material is non-magnetic
Property material.The material of mass can be solved thoroughly in prior art (document 1,3,4 and 5 described devices) for non-magnetic material
The viscous effect of mass magnetic caused when being permanent magnet, so as to the magnetic liquid flow difficulties between caused mass and housing
Problem.In the present invention, mass can select hardness much smaller than the thing of case material due to being non-magnetic conductive substance
Matter, such as solid wood, aluminum, titanium, gold, silver and copper, when acceleration is very big, mass bumps against with housing, only deforms upon and does not send out
Raw fragmentation, is maintained to preferable effectiveness in vibration suppression.In Ground Application, mass is more than selected magnetic liquid from density
The material of density so as to can be preferably placed in the middle, in space application, does not require the density of mass.
The present invention is compared with prior art and had the advantage that：(1) structure of upper and lower radome causes magnetic liquid
Need not fill so that the quality of vibroshock is greatly reduced；(2) material of upper and lower end cap is the fabulous material of magnetic property,
Magnetic liquid is set to form a liquid level for having the conical surface with upper and lower permanent magnet so that the centering effect of mass is greatly carried
It is high；(3) because upper and lower permanent magnet can respectively form magnetic loop in upper and lower radome, therefore need not be to upper and lower permanent magnetism
The installation direction of body magnetic pole has special requirement, it is not required that housing is magnetic conductive material；(4) shape of mass can be with more
Sample；(5) mass selects non-permeable material, therefore can select the material that hardness is less, plasticity is larger, so as to can be effective
Solve the problems, such as to hit mass fragmentation after wall, it also avoid the flow difficulties problem caused because of the viscous effect of magnetic.
Description of the drawings
A kind of single order buoyancy magnetic fluid damper of magnetic shields of Fig. 1.
In Fig. 1：Housing 1, upper radome 2, upper permanent magnet 3, mass 4, lower permanent magnet 5, lower radome 6 and magnetic liquid
7。
Specific embodiment
With accompanying drawing, as specific embodiment, the invention will be further described：
A kind of single order law of buoyancy magnetic liquid vibroshock of double tapered angle, such as Fig. 1, vibration absorber includes：Housing 1, on
Radome 2, upper permanent magnet 3, mass 4, lower permanent magnet 5, lower radome 6 and magnetic liquid 7.
Constitute the connection between each several part of the device：
The upper radome 2 is an inverted concave structure, and the upper surface of upper permanent magnet 3 is arranged on into upper shielding
In the groove of cover 2, and it is fixedly connected.The lower radome 6 is a concave structure just put, by under lower permanent magnet 5
It is surface mounted in the groove of lower radome 6, and is fixedly connected.
The housing 1 is a thin wall cavity structure, and the upper surface that will be equipped with the upper radome 2 of permanent magnet 3 is arranged on
The upper surface of the inner chamber of housing 1.The lower surface that will be equipped with the lower radome 6 of lower permanent magnet 5 is arranged on the lower surface of the inner chamber of housing 1.
The upper surface of the lower surface of upper permanent magnet 3 and lower permanent magnet 5 is injected separately into into magnetic liquid 7.
Mass 4 is put in housing 1, mass 4 is suspended between permanent magnet 3 and lower permanent magnet 5.
Claims (4)
1. the single order buoyancy magnetic fluid damper of a kind of magnetic shield, it is characterised in that：Including housing (1), upper radome
(2), upper permanent magnet (3), mass (4), lower permanent magnet (5), lower radome (6) and magnetic liquid (7)；
The upper radome (2) is an inverted concave structure, and the upper surface of upper permanent magnet (3) is arranged on into upper shielding
In the groove of cover (2), and it is fixedly connected；The lower radome (6) is a concave structure just put, by lower permanent magnet
(5) lower surface is arranged in the groove of lower radome (6), and is fixedly connected；
The housing (1) is a thin wall cavity structure, and the upper surface that will be equipped with the upper radome (2) of permanent magnet (3) is installed
In the upper surface of housing (1) inner chamber；The lower surface that will be equipped with the lower radome (6) of lower permanent magnet (5) is arranged on housing (1) inner chamber
Lower surface；
The upper surface of the lower surface of upper permanent magnet (3) and lower permanent magnet (5) is injected separately into into magnetic liquid (7)；
Mass (4) is put in housing (1), mass (4) is suspended between permanent magnet (3) and lower permanent magnet (5).
2. the single order buoyancy magnetic fluid damper of a kind of magnetic shield according to claim 1, it is characterised in that：
The upper radome (2) and lower radome (6) are permeability magnetic material, and overall dimensions are identical；The upper permanent magnet (3)
It is identical with the overall dimensions of lower permanent magnet (5)；The upper permanent magnet (3) and the profile and upper radome of lower permanent magnet (5)
(2) it is identical with the groove shapes of lower radome (6), but the groove size of radome (2) and lower radome (6) is smaller in size than,
For gap cooperation.
3. the single order buoyancy magnetic fluid damper of a kind of magnetic shield according to claim 1 or claim 2, it is characterised in that：
The thickness of the upper permanent magnet (3) and lower permanent magnet (5) is less than upper radome (2) and the depth of lower radome (6) groove.
4. the single order buoyancy magnetic fluid damper of a kind of magnetic shield according to claim 1, it is characterised in that：
The profile of the mass (4) is identical with the profile of upper radome (2) and lower radome (6) groove, but is smaller in size than
The groove size of radome (2) and lower radome (6)；Gap and mass between mass (4) and upper radome (2)
(4) gap and between lower radome (6) should be more than vibration amplitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000652.9A CN106678255A (en) | 2017-01-03 | 2017-01-03 | First-order buoyancy magnetic liquid damping vibration absorber for magnetic shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000652.9A CN106678255A (en) | 2017-01-03 | 2017-01-03 | First-order buoyancy magnetic liquid damping vibration absorber for magnetic shielding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678255A true CN106678255A (en) | 2017-05-17 |
Family
ID=58850042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710000652.9A Pending CN106678255A (en) | 2017-01-03 | 2017-01-03 | First-order buoyancy magnetic liquid damping vibration absorber for magnetic shielding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678255A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799394A (en) * | 2018-07-23 | 2018-11-13 | 上海交通大学 | Dynamic vibration absorber and bump leveller group's system |
| CN110602368A (en) * | 2019-09-29 | 2019-12-20 | 珠海格力电器股份有限公司 | Camera and mobile terminal |
| CN110953286A (en) * | 2019-11-05 | 2020-04-03 | 清华大学 | Rigidity and damping adjustable magnetic liquid shock absorber |
| CN112196926A (en) * | 2020-10-23 | 2021-01-08 | 清华大学 | Magnetic liquid damping vibration absorber |
| CN112727973A (en) * | 2020-12-30 | 2021-04-30 | 清华大学 | Magnetic liquid vibration damper |
| CN113074209A (en) * | 2021-03-16 | 2021-07-06 | 广西科技大学 | Miniature magneto-rheological vibration damper |
| CN114962514A (en) * | 2022-04-29 | 2022-08-30 | 北京交通大学 | Single-ball magnetic liquid collision damping shock absorber |
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| RO102539B1 (en) * | 1988-12-29 | 1993-02-25 | Active magnetofluidic bearing | |
| CN2553177Y (en) * | 2002-07-01 | 2003-05-28 | 王涛 | Magnetic vibration damper |
| CN202119794U (en) * | 2011-05-09 | 2012-01-18 | 重庆师范大学 | Magnetorheological fluid acceleration intelligent sensing system |
| CN204267584U (en) * | 2014-11-17 | 2015-04-15 | 长安大学 | A kind of MR elastomer vibration isolator |
| CN104895983A (en) * | 2015-04-30 | 2015-09-09 | 北京交通大学 | Double-tapered-angle magnetic liquid shock absorber on basis of first-order buoyancy principle |
| CN104931726A (en) * | 2015-06-25 | 2015-09-23 | 北京交通大学 | Piston-type first-order buoyancy magnetic liquid inertial sensor |
| CN105467156A (en) * | 2015-11-25 | 2016-04-06 | 北京交通大学 | Two-dimensional magnetic fluid acceleration sensor possessing magnetic shielding structure |
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| RO102539B1 (en) * | 1988-12-29 | 1993-02-25 | Active magnetofluidic bearing | |
| CN2553177Y (en) * | 2002-07-01 | 2003-05-28 | 王涛 | Magnetic vibration damper |
| CN202119794U (en) * | 2011-05-09 | 2012-01-18 | 重庆师范大学 | Magnetorheological fluid acceleration intelligent sensing system |
| CN204267584U (en) * | 2014-11-17 | 2015-04-15 | 长安大学 | A kind of MR elastomer vibration isolator |
| CN104895983A (en) * | 2015-04-30 | 2015-09-09 | 北京交通大学 | Double-tapered-angle magnetic liquid shock absorber on basis of first-order buoyancy principle |
| CN104931726A (en) * | 2015-06-25 | 2015-09-23 | 北京交通大学 | Piston-type first-order buoyancy magnetic liquid inertial sensor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799394A (en) * | 2018-07-23 | 2018-11-13 | 上海交通大学 | Dynamic vibration absorber and bump leveller group's system |
| CN108799394B (en) * | 2018-07-23 | 2020-02-21 | 上海交通大学 | Dynamic vibration absorber and vibration absorber group system |
| CN110602368A (en) * | 2019-09-29 | 2019-12-20 | 珠海格力电器股份有限公司 | Camera and mobile terminal |
| CN110953286A (en) * | 2019-11-05 | 2020-04-03 | 清华大学 | Rigidity and damping adjustable magnetic liquid shock absorber |
| CN112196926A (en) * | 2020-10-23 | 2021-01-08 | 清华大学 | Magnetic liquid damping vibration absorber |
| CN112196926B (en) * | 2020-10-23 | 2021-08-17 | 清华大学 | Magnetic liquid damping vibration absorber |
| CN112727973A (en) * | 2020-12-30 | 2021-04-30 | 清华大学 | Magnetic liquid vibration damper |
| CN113074209A (en) * | 2021-03-16 | 2021-07-06 | 广西科技大学 | Miniature magneto-rheological vibration damper |
| CN114962514A (en) * | 2022-04-29 | 2022-08-30 | 北京交通大学 | Single-ball magnetic liquid collision damping shock absorber |
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Application publication date: 20170517 |