CN205780494U - Magnetic particle drives shock absorption system - Google Patents
Magnetic particle drives shock absorption system Download PDFInfo
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- CN205780494U CN205780494U CN201620407773.6U CN201620407773U CN205780494U CN 205780494 U CN205780494 U CN 205780494U CN 201620407773 U CN201620407773 U CN 201620407773U CN 205780494 U CN205780494 U CN 205780494U
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- expansion link
- magnetic particle
- vibration
- spring
- shock absorption
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Abstract
This utility model provides a kind of magnetic particle and drives shock absorption system, and wherein, guiding mechanism, magnet exciting coil are fastenedly connected on vibration-isolating platform；Bump leveller connects vibration-isolating platform by elastomeric element, and by the deformation of elastomeric element and vibration-isolating platform relative movement；Rotate magnetic particle to be arranged on the deformation direction of elastomeric element.This utility model is rational in infrastructure, assembling simplicity.Utilize this utility model can rotate magnetic particle relative to the beat position of magnet exciting coil or angle by adjusting, thus change rotation magnetic particle yardstick on telescopic spring direction, and then change the extruding degree of spring, i.e. under the action of a magnetic field, telescopic spring degree or spring rate with PM rotor interaction (when reaching equilbrium position/initial position), can regulate by applying magnetic field force or change, i.e. can regulate or change the system frequency of shock absorption system in this way, and then realize active or the half active power shock attenuation result of vibration to controlled device (main shake) system.
Description
Technical field
This utility model relates to shock absorption system, in particular it relates to magnetic particle drives shock absorption system.
Background technology
Vibration problem is precision engineering field common problem, subtracts theory of vibration isolation and technology for vibration and device grinds
Study carefully the most widely.Owing to dynamic vibration absorber is inhaled by surface under not affecting principal oscillation body (controlled device) any structure situation
The mode such as attached installs the mode that just can realize vibration control effect, and structure design is simple, and it is the most convenient to install and use, and therefore suffers from
Most attention.
But, dynamic vibration absorber is after when design, structure determines, its frequency subtracting vibration isolation determines that, based on controlled device
Realize the absorbing principle of resonance, when the frequency of vibration of control target changes, then dynamic vibration absorber shock attenuation result will
It is greatly affected.Therefore, people have developed the variable dynamic vibration absorber rigidity of structure further, and then can be with motivation of adjustment absorbing
Device natural frequency, reaches the optimal actively shock attenuation result of vibration to mate the frequency of vibration change of controlled device.Through retrieval
Find: application number: 201320797303.1, the applying date: 2013-12-05, it is proposed that a kind of cantilever beam type vibration absorber with adjustable frequency
Patent, including base, cantilever beam, quality disk, the lower end of base is fixed on vibratory equipment, the upper end of base and quality circle
Being respectively provided with through hole on dish, be respectively provided with female thread in through hole, cantilever beam arranges the external screw thread matched with through hole, cantilever beam passes through
External screw thread is arranged in the through hole of base and quality disk, and fixing nut is installed by base and cantilever beam in the through hole two ends of base
Position is fixed, and relative with cantilever beam for quality disk position is limited by the through hole two ends mounting and adjusting nut of quality disk, and adjusts
Whole nut is adjustable, i.e. quality disk is adjustable with the relative position of cantilever beam.This utility model points out that its absorbing frequency can be adjusted flexibly
Joint, and scalable leeway is bigger.Part is prone to processing and replaces.Compared with bump leveller tunable with electromagnetic type and electrodynamic type, without electricity
Magnetic dispersion phenomenon.Simple in construction, working stability, it is easy to install.
This technical purpose is to realize frequency-adjustable, but its frequency-adjustable is to realize matter by manual off-line adjusting nut
Amount disk reaches with the relative position of cantilever beam to change bump leveller natural frequency purpose.The shortcoming of this mode is that it adjusts
Mode can not be on-line tuning in controlled device work, and structure just secures after adjusting every time, thus natural frequency determines,
Still can not solve the bump leveller in the case of controlled device frequency time-varying and have most the corresponding adjustment of frequency.
Utility model content
For defect of the prior art, the purpose of this utility model is to provide a kind of magnetic particle and drives shock absorption system.
Shock absorption system is driven, including vibration-isolating platform, guiding mechanism, excitation according to a kind of magnetic particle that this utility model provides
Coil, rotation magnetic particle, bump leveller；
Guiding mechanism, magnet exciting coil are fastenedly connected on vibration-isolating platform；
Bump leveller connects vibration-isolating platform by elastomeric element, and moves by the deformation of elastomeric element is relative with vibration-isolating platform
Dynamic；
Rotate magnetic particle to be arranged on the deformation direction of elastomeric element.
Preferably, bump leveller includes the first expansion link, the second expansion link, and elastomeric element includes the first spring, the second spring；
First expansion link, the second expansion link all can slide along guiding mechanism；
First expansion link, the second expansion link opposite end between be provided with rotation magnetic particle；
One end of first spring connects the first expansion link, and the other end of the first spring is relatively fixed with vibration-isolating platform；
One end of second spring connects the second expansion link, and the other end of the second spring is relatively fixed with vibration-isolating platform；
The first expansion link of being ordered about by the first spring, the second expansion link ordered about by the second spring are by mutually drawing close extruding
Rotate magnetic particle.
Preferably, rotating magnetic particle and be arranged in rotating shaft, rotating shaft can be slided along guiding mechanism.
Preferably, the inwall of opposite face between the first expansion link, the second expansion link and guiding mechanism limits jointly
Space forms active chamber；
Magnetic particle is limited in active chamber, and can move freely in active chamber.
Preferably, inductive coil is also included；Inductive coil is fastenedly connected with vibration-isolating platform.
Preferably, beat magnet is also included；Rotate magnetic particle and be positioned at beat magnet interiorly or exteriorly.
Preferably, damping magnet is also included；The quantity of damping magnet is one or more；Damping magnet be fastenedly connected every
Shake platform, and damping magnet and the second expansion link can be changed between fit-state and released state.
Preferably, guiding mechanism is guide pipe；The normal direction being axially parallel to vibration-isolating platform of guide pipe；
The inner tubal wall of guide pipe constitutes the first expansion link, the dragging track of the second expansion link；
It is provided with the first axle sleeve between bar portion and the inner tubal wall of guide pipe of the first expansion link；The other end of the first spring is even
Connect the first axle sleeve；
It is provided with the second axle sleeve between bar portion and the inner tubal wall of guide pipe of the second expansion link；The other end of the second spring
Connect the second axle sleeve；
It is provided with balancing weight on second expansion link.
Preferably, vibration-isolating platform is provided with receiving hole towards the one side of the first expansion link；First expansion link can accommodate
Slide in hole；Beat magnet can slide along guiding mechanism.
Preferably, damping magnet includes permanent magnet and electromagnet, and second expansion link both sides in diametric(al) are the most all
It is provided with permanent magnet, electromagnet；Or
Damping magnet includes being filled with magnetic rheological liquid, magnetic conductivity powder particle, soft magnetic granules, amorphous, nano-crystalline granule
Or the capsule body of magnetic medium.
Compared with prior art, this utility model has a following beneficial effect:
This utility model is rational in infrastructure, assembling simplicity.Utilize this utility model can rotate magnetic particle by adjustment relative
The beat position of magnet exciting coil or angle, thus change rotation magnetic particle yardstick on telescopic spring direction, and then change bullet
The extruding degree of spring, i.e. under the action of a magnetic field, with the bullet of PM rotor interaction (when reaching equilbrium position/initial position)
Spring telescopic level or spring rate, can regulate by applying magnetic field force or change, i.e. can regulate in this way or change absorbing
The system frequency of system, and then realize active or the half active power absorbing effect of vibration to controlled device (main shake) system
Really.
Accompanying drawing explanation
The detailed description with reference to the following drawings, non-limiting example made by reading, other spy of the present utility model
Levy, purpose and advantage will become more apparent upon:
Fig. 1 drives the structural representation of shock absorption system for the magnetic particle that this utility model first embodiment provides.
Fig. 2 drives the structural representation of shock absorption system for the magnetic particle that this utility model the second embodiment provides.
In figure:
1-vibration-isolating platform
2-guiding mechanism
3-magnet exciting coil
4-the first expansion link
5-the second expansion link
6-magnetic particle
7-the first spring
8-the second spring
9-rotating shaft
10-active chamber
11-inductive coil
12-beat magnet
13-damping magnet
14-the first axle sleeve
15-the second axle sleeve
16-balancing weight
17-receiving hole
H-magnetic field
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in detail.Following example will assist in this area
Technical staff is further appreciated by this utility model, but limits this utility model the most in any form.It should be pointed out that, to ability
For the those of ordinary skill in territory, without departing from the concept of the premise utility, it is also possible to make some changes and improvements.
These broadly fall into protection domain of the present utility model.
First embodiment
As it is shown in figure 1, a kind of magnetic particle driving shock absorption system provided according to this utility model, including vibration-isolating platform 1, lead
To mechanism 2, magnet exciting coil the 3, first expansion link the 4, second expansion link 5, rotate magnetic particle the 6, first spring the 7, second spring 8；Lead
It is fastenedly connected on vibration-isolating platform 1 to mechanism 2, magnet exciting coil 3；First expansion link the 4, second expansion link 5 all can be along Guiding machine
Structure 2 slides；Rotation magnetic particle 6 it is provided with between the opposite end of first expansion link the 4, second expansion link 5；One end of first spring 7
Connecting the first expansion link 4, the other end of the first spring 7 is relatively fixed with vibration-isolating platform 1；One end of second spring 8 connects second
Expansion link 5, the other end of the second spring 8 is relatively fixed with vibration-isolating platform 1；The first expansion link 4 of being ordered about by the first spring 7, it is subject to
The second expansion link 5 that second spring 8 orders about rotates magnetic particle 6 by mutually drawing close extruding.Rotate magnetic particle 6 and be arranged on rotating shaft 9
On, rotating shaft 9 can be slided along guiding mechanism 2.Fig. 1 shows 1 magnet exciting coil and 1 inductive coil.
Described magnetic particle drives shock absorption system also to include inductive coil 11；Inductive coil 11 is fastenedly connected with vibration-isolating platform 1.
Described magnetic particle drives shock absorption system also to include beat magnet 12；Rotate magnetic particle 6 and be positioned at beat magnet 12 interiorly or exteriorly.
Described magnetic particle drives shock absorption system also to include damping magnet 13；The quantity of damping magnet 13 is one or more；Magnetic Damping
Body 13 is fastenedly connected vibration-isolating platform 1, and damping magnet 13 and the second expansion link 5 can fit-state and released state it
Between change.
Guiding mechanism 2 is guide pipe；The normal direction being axially parallel to vibration-isolating platform 1 of guide pipe；The inner tubal wall structure of guide pipe
Become the dragging track of first expansion link the 4, second expansion link 5；Arrange between bar portion and the inner tubal wall of guide pipe of the first expansion link 4
There is the first axle sleeve 14；The other end of the first spring 7 connects the first axle sleeve 14；The bar portion of the second expansion link 5 and the inner tube of guide pipe
The second axle sleeve 15 it is provided with between wall；The other end of the second spring 8 connects the second axle sleeve 15；It is provided with on second expansion link 5 and joins
Pouring weight 16.Vibration-isolating platform 1 is provided with receiving hole 17 towards the one side of the first expansion link 4；First expansion link 4 can be in receiving hole 17
Interior slip.Beat magnet 12 can slide along guiding mechanism 2.Second expansion link 5 both sides in diametric(al) are provided with resistance
Buddhist nun's magnet 13.
Second embodiment
As in figure 2 it is shown, a kind of magnetic particle driving shock absorption system provided according to this utility model, including vibration-isolating platform 1, lead
To mechanism 2, magnet exciting coil the 3, first expansion link the 4, second expansion link 5, rotate magnetic particle the 6, first spring the 7, second spring 8；Lead
It is fastenedly connected on vibration-isolating platform 1 to mechanism 2, magnet exciting coil 3；First expansion link the 4, second expansion link 5 all can be along Guiding machine
Structure 2 slides；Rotation magnetic particle 6 it is provided with between the opposite end of first expansion link the 4, second expansion link 5；One end of first spring 7
Connecting the first expansion link 4, the other end of the first spring 7 is relatively fixed with vibration-isolating platform 1；One end of second spring 8 connects second
Expansion link 5, the other end of the second spring 8 is relatively fixed with vibration-isolating platform 1；The first expansion link 4 of being ordered about by the first spring 7, it is subject to
The second expansion link 5 that second spring 8 orders about rotates magnetic particle 6 by mutually drawing close extruding.First expansion link the 4, second expansion link 5
Between opposite face and the space that jointly limits of the inwall of guiding mechanism 2 form active chamber 10；Magnetic particle 6 is limited in work
In dynamic chamber 10, and can move freely in active chamber 10.Fig. 2 shows 1 magnet exciting coil and 1 inductive coil.
Described magnetic particle drives shock absorption system also to include inductive coil 11；Inductive coil 11 is fastenedly connected with vibration-isolating platform 1.
Described magnetic particle drives shock absorption system also to include beat magnet 12；Rotate magnetic particle 6 and be positioned at beat magnet 12 interiorly or exteriorly.
Described magnetic particle drives shock absorption system also to include damping magnet 13；The quantity of damping magnet 13 is one or more；Magnetic Damping
Body 13 is fastenedly connected vibration-isolating platform 1, and damping magnet 13 and the second expansion link 5 can be between fit-state and released states
Conversion.
Guiding mechanism 2 is guide pipe；The normal direction being axially parallel to vibration-isolating platform 1 of guide pipe；The inner tubal wall structure of guide pipe
Become the dragging track of first expansion link the 4, second expansion link 5；Arrange between bar portion and the inner tubal wall of guide pipe of the first expansion link 4
There is the first axle sleeve 14；The other end of the first spring 7 connects the first axle sleeve 14；The bar portion of the second expansion link 5 and the inner tube of guide pipe
The second axle sleeve 15 it is provided with between wall；The other end of the second spring 8 connects the second axle sleeve 15；It is provided with on second expansion link 5 and joins
Pouring weight 16.Vibration-isolating platform 1 is provided with receiving hole 17 towards the one side of the first expansion link 4；First expansion link 4 can be in receiving hole 17
Interior slip.Beat magnet 12 can slide along guiding mechanism 2.Second expansion link 5 both sides in diametric(al) are provided with resistance
Buddhist nun's magnet 13.
Change case
In a change case of Fig. 1, Fig. 2, the first expansion link and the first spring can omit；In another change case
In, the second expansion link and the second spring can omit.Damping magnet can be filled with magnetic rheological liquid, magnetic conductivity powder
The capsule body of grain, soft magnetic granules, amorphous, nano-crystalline granule or magnetic medium, capsule body produces the resistance hindering the second expansion link
Power.
Operation principle
The absorbing principle that this utility model utilizes by the frequency of vibration of vibration isolation object with its on the frequency phase of shock absorption system
Meanwhile, produce resonance, thus preferably will be transferred on shock absorption system by the vibration kinetic energy of vibration isolation object, so that by vibration isolation pair
As vibration reduces, and produce and subtract vibration isolating effect.Natural frequency for a system itself can simply have ω=(k/m)1 /2.Wherein, k is shock absorption system stiffness coefficient, and m is shock absorption system quality, and ω is shock absorption system natural frequency.I.e. by changing k
Or/and m all can change the natural frequency ω of shock absorption system.
This utility model, based on this principle, proposes one and rotates magnetic particle (permanent magnet or electromagnet), by rotating magnetic grain
Magnetic field produced by the magnet exciting coil of son and periphery (and rotating between magnetic particle periphery beat magnet) interacts, and produces one
Individual suitable electromagnetism and/or ferromagnetic, acts on the magnetic force (pulling force or repulsion) rotating magnetic particle, thus rotates magnetic grain
The beat position of son magnet exciting coil relatively or angle, thus change rotation magnetic particle yardstick on telescopic spring direction, and then
Change the extruding degree of spring, i.e. under the action of a magnetic field, interact with PM rotor and (reaching equilbrium position/initial position
Time) telescopic spring degree or spring rate, can by apply magnetic field force regulate or change, i.e. can regulate in this way or change
Become the system frequency of shock absorption system, and then realize active or half active power of vibration to controlled device (main shake) system
Shock attenuation result.Therefore, it is possible to the absorbing stiffness coefficient k being ultimately present as shock absorption system changes, finally according to ω=(k/m
)1/2And shock absorption system natural frequency can be changed.Therefore, it can by applying electric excitation electromagnetic field electric current, or Electromagnetic heating is ferromagnetic
The suction acting on magnetic particle changes the deflection angle rotating magnetic particle, to adjust the deformation degree of spring, thus realizes absorbing
The regulation and control of system frequency ω.Thus, when being ω ＇ by the frequency of vibration of vibration isolation object, we can pass through exciting current
Regulation shock absorption system natural frequency is and ω ＇ with same frequency and reversed-phase state, thus reaches optimal shock attenuation result.
Specifically, magnet exciting coil is used for producing magnetic force, under the effect of described magnetic force, rotates magnetic particle
The deflection angle of magnet exciting coil relatively changes, and then changes the deformation degree of the first spring and/or the second spring, thus
The structure making magnetic particle drive the system stiffness of shock absorption system to cause because rotating magnetic particle beat position changes and changes, and
The torque of magnetic force rotating the torsional rigidity of magnetic particle or rotation magnetic particle and magnet exciting coil is changed and changes magnetic grain
Son drives the absorbing stiffness coefficient of shock absorption system.Wherein, rotate magnetic particle and can pass through rotating shaft or ball-type hinge beat.Wherein,
Inductive coil surrounds guide pipe, and magnet exciting coil surrounds magnet exciting coil, and beat magnet surrounds magnet exciting coil.First stretches
Bar, the second expansion link, the first axle sleeve, the second axle sleeve, guide pipe are coaxially disposed.Inductive coil is for detecting vibration isolation as sensor
The frequency of vibration of platform, the controller of magnet exciting coil controls magnet exciting coil according to the frequency of vibration of vibration-isolating platform and produces magnetic field excitation
Rotate magnetic particle.In Fig. 1, Fig. 2, the both sides of the second expansion link are provided with damping magnet, the damping on the left of the second expansion link
Magnet is electromagnet, and the damping magnet on the right side of the second expansion link is permanent magnet, and when electromagnet is not powered on, permanent magnet keeps absorption
Bar portion in the second expansion link so that rub between permanent magnet and the second expansion link, with by vibrational energy by friction side
Formula consumes, and when electromagnet is energized, can attract permanent magnet so that frictional force increases, it is also possible to repel permanent magnet so that
Frictional force reduces or disappears.Utilize this utility model can aid in and realize full active form or the vibration isolation of half active form
Effect.
Above specific embodiment of the utility model is described.It is to be appreciated that this utility model not office
Being limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes within the scope of the claims or revise,
This has no effect on flesh and blood of the present utility model.Spy in the case of not conflicting, in embodiments herein and embodiment
Levy and can arbitrarily be mutually combined.
Claims (10)
1. a magnetic particle drives shock absorption system, it is characterised in that include vibration-isolating platform (1), guiding mechanism (2), magnet exciting coil
(3), magnetic particle (6), bump leveller are rotated；
Guiding mechanism (2), magnet exciting coil (3) are fastenedly connected on vibration-isolating platform (1)；
Bump leveller connects vibration-isolating platform (1) by elastomeric element, and moves by the deformation of elastomeric element is relative with vibration-isolating platform (1)
Dynamic；
Rotate magnetic particle (6) to be arranged on the deformation direction of elastomeric element.
Magnetic particle the most according to claim 1 drives shock absorption system, it is characterised in that bump leveller includes the first expansion link
(4), the second expansion link (5), elastomeric element includes the first spring (7), the second spring (8)；
First expansion link (4), the second expansion link (5) all can slide along guiding mechanism (2)；
First expansion link (4), the second expansion link (5) opposite end between be provided with rotation magnetic particle (6)；
One end of first spring (7) connects the first expansion link (4), and the other end of the first spring (7) is relative solid with vibration-isolating platform (1)
Fixed；
One end of second spring (8) connects the second expansion link (5), and the other end of the second spring (8) is relative solid with vibration-isolating platform (1)
Fixed；
The first expansion link (4) of being ordered about by the first spring (7), the second expansion link (5) ordered about by the second spring (8) are by mutually
Draw close extruding and rotate magnetic particle (6).
Magnetic particle the most according to claim 1 drives shock absorption system, it is characterised in that rotation magnetic particle (6) is arranged on and turns
On axle (9), rotating shaft (9) can be slided along guiding mechanism (2).
Magnetic particle the most according to claim 2 drive shock absorption system, it is characterised in that the first expansion link (4), second stretch
The space that opposite face between bar (5) and the inwall of guiding mechanism (2) limit jointly forms active chamber (10)；
Magnetic particle (6) is limited in active chamber (10), and can move freely in active chamber (10).
Magnetic particle the most according to claim 1 drives shock absorption system, it is characterised in that also include inductive coil (11)；Sense
Raw coil (11) is fastenedly connected with vibration-isolating platform (1).
Magnetic particle the most according to claim 1 drives shock absorption system, it is characterised in that also include beat magnet (12)；Turn
Dynamic magnetic particle (6) is positioned at beat magnet (12) interiorly or exteriorly.
Magnetic particle the most according to claim 1 drives shock absorption system, it is characterised in that also include damping magnet (13)；Resistance
The quantity of Buddhist nun's magnet (13) is one or more；Damping magnet (13) is fastenedly connected vibration-isolating platform (1), and damping magnet
(13) can change between fit-state and released state with the second expansion link (5).
Magnetic particle the most according to claim 2 drives shock absorption system, it is characterised in that guiding mechanism (2) is guide pipe；Lead
To the normal direction being axially parallel to vibration-isolating platform (1) of pipe；
The inner tubal wall of guide pipe constitutes the first expansion link (4), the dragging track of the second expansion link (5)；
The first axle sleeve (14) it is provided with between bar portion and the inner tubal wall of guide pipe of the first expansion link (4)；First spring (7) another
One end connects the first axle sleeve (14)；
The second axle sleeve (15) it is provided with between bar portion and the inner tubal wall of guide pipe of the second expansion link (5)；Second spring (8) another
One end connects the second axle sleeve (15)；
Balancing weight (16) it is provided with on second expansion link (5).
Magnetic particle the most according to claim 1 drives shock absorption system, it is characterised in that vibration-isolating platform (1) is stretched towards first
The one side of contracting bar (4) is provided with receiving hole (17)；First expansion link (4) can slide in receiving hole (17)；Beat magnet
(12) can slide along guiding mechanism (2).
Magnetic particle the most according to claim 7 drives shock absorption system, it is characterised in that damping magnet (13) includes permanent magnetism
Body and electromagnet, the second expansion link (5) both sides in diametric(al) are provided with permanent magnet, electromagnet respectively；Or
Damping magnet (13) includes being filled with magnetic rheological liquid, magnetic conductivity powder particle, soft magnetic granules, amorphous, nano-crystalline granule
Or the capsule body of magnetic medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407773.6U CN205780494U (en) | 2016-05-06 | 2016-05-06 | Magnetic particle drives shock absorption system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407773.6U CN205780494U (en) | 2016-05-06 | 2016-05-06 | Magnetic particle drives shock absorption system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205780494U true CN205780494U (en) | 2016-12-07 |
Family
ID=57411416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620407773.6U Active CN205780494U (en) | 2016-05-06 | 2016-05-06 | Magnetic particle drives shock absorption system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205780494U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840705A (en) * | 2016-05-06 | 2016-08-10 | 上海交通大学 | Magnetic particle driven shock absorption system |
| CN114729673A (en) * | 2019-11-27 | 2022-07-08 | 株式会社东芝 | Support device and support unit |
-
2016
- 2016-05-06 CN CN201620407773.6U patent/CN205780494U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840705A (en) * | 2016-05-06 | 2016-08-10 | 上海交通大学 | Magnetic particle driven shock absorption system |
| CN105840705B (en) * | 2016-05-06 | 2018-10-23 | 上海交通大学 | Magnetic particle drives shock absorption system |
| CN114729673A (en) * | 2019-11-27 | 2022-07-08 | 株式会社东芝 | Support device and support unit |
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