CN103939518A - Single-pole surface-plate-type magnetorheological damper - Google Patents
Single-pole surface-plate-type magnetorheological damper Download PDFInfo
- Publication number
- CN103939518A CN103939518A CN201410037427.9A CN201410037427A CN103939518A CN 103939518 A CN103939518 A CN 103939518A CN 201410037427 A CN201410037427 A CN 201410037427A CN 103939518 A CN103939518 A CN 103939518A
- Authority
- CN
- China
- Prior art keywords
- cavity
- magneto
- core iron
- plate
- vibration damper
- 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.)
- Granted
Links
- 238000013016 damping Methods 0.000 claims abstract description 43
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 12
- 239000005060 rubber Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000006096 absorbing agent Substances 0.000 description 8
- 244000043261 Hevea brasiliensis Species 0.000 description 6
- 229920003052 natural elastomer Polymers 0.000 description 6
- 229920001194 natural rubber Polymers 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003313 weakening effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009342 intercropping Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000003190 viscoelastic substance Substances 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a single-pole surface-plate-type magnetorheological damper which comprises a frame body. A cavity is contained inside the frame body. A core iron block around which a coil is wound is fixed to the middle of the cavity. Gaps exist in the core iron block and the inner surface of the cavity. The gaps contain magnetorheological fluid. The upper surface and the lower surface of the core iron block are provided with sliding plates. The periphery of the frame body is provided with guiding columns penetrating through the frame body to be connected with the cavity. The guiding columns push the cavity under the action of external force, so that the sliding plates are driven to slide relative to the core iron block, the sliding plates slide to drive the magnetorheological fluid to conduct shearing motion and differential pressure flowing, and reactive force of the magnetorheological fluid on the sliding plates is damping force of the magnetorheological damper. According to the single-pole surface-plate-type magnetorheological damper, the surface-plate-type sliding plates are adopted to replace a working piston of the magnetorheological damper, a single-pole coil magnetic structure and mechanism mode is adopted, and an upper surface-plate-type piston and a lower surface-plate-type piston can work under the action of the coil at the same time, so that the magnetic field intensity variation region with the larger range is provided for the magnetorheological fluid.
Description
Technical field
The present invention relates to automobile shock equipment technical field, specifically, the present invention relates to a kind of one pole flat-faced tube magneto-rheological vibration damper.
Background technique
In the design of magneto-rheological vibration damper, can quote the basic thought in the hydraulic suspension in high utmost point car, hydraulic oil produces damping by damping hole, and the elastic force of spring is the reply for central position.Certainly the design philosophy of magneto-rheological vibration damper is no exception, using the elastic force of spring as restoring force, controls the variation of damping force by the change of magnetic intensity, carries out half ACTIVE CONTROL of vibration system.
The present invention is mainly used in the vibration damping operating mode of the shear-loaded of vibratory roller vibration steel wheel.When magneto-rheological vibration damper is in running order, under steel wheel state of equilibrium, displacement is zero, and speed is zero, and the elastic force of spring just equals the gravity of vehicle frame, and damping force is zero.In the time that vibration steel wheel is upwards vibrated by equilibrium position, steel wheel speed changes to minimum from maximum, and excitation force and velocity reversal, change from small to big, and steel wheel is to impact to vibration damper with larger inertia.By the adjusting of magnetic intensity, make damping force become large, it is large that spring force becomes gradually along with the increase of distortion, spring and damping absorb from steel wheel the impact energy to vehicle frame, and vehicle frame is because of its great quality, larger inertia, so in the time of spring and damping impact-absorbing, self vibrates minimum.On the contrary, in the time that steel wheel is vibrated downwards by equilibrium position, damping is adjusted to minimum, supplements the space of stretching out with the stretching, extension of spring, and the weight of the elastic force of spring and damping force balance frame makes the displacement minimum of vehicle frame.From extreme higher position to equilibrium position, the vibration from extreme lower position to equilibrium position is also same reason to steel wheel.Generally speaking, vibration damper is the flexibly jointed chain place between vehicle frame and steel wheel.
In vibratory roller, to introduce vibration on the one hand, make vibrating wheels produce excitation force, by vibrating better compacted subgrade, and farthest utilize the energy vibrating; To take on the other hand vibration damping, reduce the transmission of vibrating wheels to vehicle frame and seat vibration energy by vibration damper.That is to say, we will reduce the constraint to vibrating wheels, reduce its damping force, improve vibration efficiency, simultaneously strengthen get on the bus and vibrating wheels between effectiveness in vibration suppression, make its less transmitting vibrations.
Conventionally, vibration damping is by suppressing the methods such as vibration source intensity, vibration isolation, weakening, reducing the transmission of oscillating body to damping body vibrational energy.Concrete vibration attenuation mechanism is as follows:
A, inhibition vibration source intensity.For example, high speed rotor is carried out to perfect dynamic balancing, reduce the excitation force that its unbalance mass, produces.Or, road surface is spread smoothly as far as possible, alleviate its excitation to motion wheel.Reduce in addition the wind-exposuring area of tall building. alleviate the wind that it bears and carry.All these is the technical measures that suppress vibration source intensity.
B, vibration isolation.Between vibration source and damping body, inject soft liner, rely on its distortion to alleviate the excitation of vibration source to damping body, be commonly referred to vibration isolation.Device for vibration isolation is called vibration isolator.For example, the pneumatic tire of automotive wheel outer rim, the wooden unit basis under plummet base, the foamed plastics packings in instrumentation package case etc., are all common vibration isolators.
C, weakening.Additional special device on damping body, relies on it and damping body to interact, and absorbs the kinetic energy of vibration system.Thereby reduce the ocsillator strenght of damping body, weakening that Here it is.Device for weakening is called vibration absorber.For example, stick on the high damping rate viscoelastic material in both firewall, the movable mass that is arranged on high flexible top of building is all vibration absorber.
Along with the raising that progress and the people of technology require effectiveness in vibration suppression, vibration damping theory turns to active damping from passive insulation.And all vibration damping modes are all from 2 points (K, rigidity; C, damping) incision.MR damper has good quality, and its characteristic is as follows:
1) damping force is large; 2) damping is adjustable, and regulation range is wide; 3) thermal adaptability is strong, good environmental adaptability; 4) fast response time; 5) energy consumption is low; 6) efficient; 7) long service life; 8) feature such as easy to maintenance, not only can be used as conventional passive energy dissipator but also be half desirable ACTIVE CONTROL driver.
In view of rheological properties and the MR damper fine quality of magnetic converting technique uniqueness, thus magnetic converting technique is introduced to the vibration damping aspect of vibratory roller, to replace the nonadjustable shortcoming of current rubber shock absorber damping.
Magneto-rheological vibration damper: at present, the main composition of magneto-rheological vibration damper is as Fig. 1, piston rod does reciprocating linear motion in cylinder body, between piston rod and cylinder body, have less gap, magnetic rheological liquid is at gap intercropping extruding, shearing motion, if to coil electricity, the upper coil of the match of living changes around utmost point part magnetic intensity, magnetic flow liquid viscosity also changes thereupon, and output damping force becomes large, and this is the groundwork principle of magneto-rheological vibration damper.
Common structural type has single rod and two kinds, two bars at present, that is: piston rod is to stretch out (single rod) from one end of cylinder body, or all stretches out (two rod) from two ends
The vibration damper of prior art comprises following:
(1) rubber shock absorber: conventionally, the material of the rubber shock absorber that vibratory roller uses has two kinds, the one, natural rubber, another-kind be nitrile butadiene rubber.The vibration damper that natural rubber is made has good mechanical property, easy to process, has good elasticity, stability and resistance to property at sunshine.Therefore, the vibration damper of some vibratory rollers uses natural rubber manufacture.But natural rubber damping is little, not bery safe during by resonance region.When by resonance region, the amplitude of getting on the bus of vibratory roller is very large.In addition, the oil resistance of natural rubber is poor, and when after the vibration damper contact greasy dirt of vibratory roller, rubber deforms, and follows the string, and severe patient vibration damper will be scrapped.In light of this situation, the vibration damper that uses at present natural rubber to manufacture is little.Nitrile butadiene rubber has the advantages such as good oil resistance and larger damping, is the material of good manufacture vibration damper.At present, the vibration damper of vibratory roller adopts nitrile butadiene rubber manufacture widely, but the price comparison of nitrile butadiene rubber is high.Present market is exactly rubber shock absorber use, and the shortcoming of technological scheme rubber shock absorber is as follows: 1) high temperature resistant, poor performance at low temperatures; 2) resistance to sunshine poor performance; 3) oil resistance is poor; 4) working life low, after long-term use, elasticity reduces, damping property variation; 5) damping is non-adjustable; 6) damping efficiency is low; 7) non-renewable, not environmental protection etc.
(2) for listed technical problem, applicant proposes a kind of magnetorheological-rubber combined shearing type MR vibration damper in early stage, and obtain invention patent mandate invention patent mandate (patent of invention number: 200810070631.5, notice of authorization number: CN101235864), its structural feature is as shown in Fig. 2 a, Fig. 2 b.
Carry out the design of shearing type MR vibration damper taking One-Dimension Magnetic rheological damper as starting point, the engineering drawing that Fig. 2 is vibration damper.Vibration damper is mainly made up of front and back side plate, piston rod, cylinder body, rubber and accessory, wherein piston rod and a side plate are fixed, cylinder body is fixed by rubber and another piece side plate, and rubber is used for producing damping on the one hand, plays a part on the other hand to shear to reset; The biside plate of vibration damper is connected with two parts treating vibration damping equipment respectively.In the time that vibration damper is worked, biside plate, along cylinder body axial direction parallel, makes to produce relative movement between piston rod and cylinder body, by changing the operating current of drive coil on piston rod, change the magnetic intensity of field circuit, realize the adjustable of absorber damping force size.
Prior art scheme (2) is owing to being magnetorheological-building rubber compound, so also there is to a certain extent above-mentioned other shortcoming except " 5) damping non-adjustable ".
Summary of the invention
The object of this invention is to provide a kind of a kind of one pole flat-faced tube magneto-rheological vibration damper that adopts flat-faced tube piston to do shearing motion in magneto-rheological fluid.
Technological scheme provided by the invention is: a kind of one pole flat-faced tube magneto-rheological vibration damper, comprise a framework, accommodate a cavity in framework, cavity middle part is fixed with the core iron piece that is wound with coil, all there is gap in core iron piece and cavity inner surface, gap accommodates magneto-rheological fluid; The upper and lower surface of core iron piece is placed with slide plate; Framework surrounding all has guide pillar to pass framework and cavity connects, guide pillar promotes cavity under external force, thereby drive the relative core iron piece of slide plate to slide, slide plate slides drives magneto-rheological fluid to do shearing motion and pressure reduction flows, the damping force that magneto-rheological fluid is magneto-rheological vibration damper to the reaction force of slide plate.
The every periphery of described framework be evenly equipped with two guide pillars.
Described framework top is fixed with overlay.
Tool of the present invention has the following advantages:
The present invention adopts flat-faced tube slide plate to replace the working piston of magneto-rheological vibration damper, adopt magnetic structure and the mechanism form of monopole coil, upper and lower two flat-faced tube pistons can be worked under coil acts on simultaneously, like this can be for magnetic flow liquid provides the region of change of magnetic field strength in a big way, magnetic circuit efficiency improves greatly.In addition, designs simplification, part is less, and cost aspect reduces greatly.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the present invention and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention, wherein:
Fig. 1 is the structural representation of prior art piston rod type magneto-rheological vibration damper;
Fig. 2 a, Fig. 2 b be prior art magnetorheological-building rubber compound damper structure schematic diagram;
Fig. 3 is structure sectional view of the present invention;
Fig. 4 is that A-A in Fig. 3 is to sectional view.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As follows to the detailed description of the invention in conjunction with Fig. 3, Fig. 4:
A kind of one pole flat-faced tube magneto-rheological vibration damper of the present invention, comprise a framework 1, framework 1 top is fixed with overlay 8, in framework 1, accommodate a cavity 2, cavity 2 middle parts are fixed with the core iron piece 4 that is wound with coil 3, all there is gap with cavity 2 internal surfaces in core iron piece 4, gap accommodates magneto-rheological fluid 5; The upper and lower surface of core iron piece 4 is placed with slide plate 6; Framework 1 surrounding all has guide pillar 7 to connect through framework 1 and cavity 2, guide pillar 7 promotes cavity 2 under external force, thereby drive the relative core iron piece 4 of slide plate 6 to slide, slide plate 6 slides, and drive magneto-rheological fluid 5 does shearing motion and pressure reduction flows, the damping force that magneto-rheological fluid 5 is magneto-rheological vibration damper to the reaction force of slide plate 6.
Framework 1 every periphery be evenly equipped with two guide pillars 7, eight guide pillars are divided into longitudinal and transverse two directions, four, each direction, in the time that framework 1 is moved, its active force and displacement all can be resolved into orthogonal two component, displacement component in longitudinal and transverse two directions, each guide pillar 7 all slides along its axis, promoting cavity 2 drives slide plate 6 to move, slide plate 6 is under guide pillar 7 promotes, in cavity 2, do relative sliding, slide plate 6 drives magneto-rheological fluid 5 to do shearing motion and pressure reduction flows, the damping that magneto-rheological fluid 5 is magneto-rheological vibration damper to the reaction force of slide plate 6.
The explanation of above example is just for helping to understand core concept of the present invention; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (3)
1. an one pole flat-faced tube magneto-rheological vibration damper, is characterized in that, comprises a framework, accommodates a cavity in framework, and cavity middle part is fixed with the core iron piece that is wound with coil, and core iron piece and cavity inner surface all exist gap, and gap accommodates magneto-rheological fluid; The upper and lower surface of core iron piece is placed with slide plate;
Framework surrounding all has guide pillar to pass framework and cavity connects, guide pillar promotes cavity under external force, thereby drive the relative core iron piece of slide plate to slide, slide plate slides drives magneto-rheological fluid to do shearing motion and pressure reduction flows, the damping force that magneto-rheological fluid is magneto-rheological vibration damper to the reaction force of slide plate.
2. a kind of one pole flat-faced tube magneto-rheological vibration damper according to claim 1, is characterized in that, the every periphery of described framework be evenly equipped with two guide pillars.
3. a kind of one pole flat-faced tube magneto-rheological vibration damper according to claim 1, is characterized in that, described framework top is fixed with overlay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037427.9A CN103939518B (en) | 2014-01-26 | 2014-01-26 | A kind of one pole flat-faced tube magneto-rheological vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037427.9A CN103939518B (en) | 2014-01-26 | 2014-01-26 | A kind of one pole flat-faced tube magneto-rheological vibration damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939518A true CN103939518A (en) | 2014-07-23 |
| CN103939518B CN103939518B (en) | 2015-12-09 |
Family
ID=51187333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410037427.9A Expired - Fee Related CN103939518B (en) | 2014-01-26 | 2014-01-26 | A kind of one pole flat-faced tube magneto-rheological vibration damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939518B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568737A (en) * | 2015-01-08 | 2015-04-29 | 重庆材料研究院有限公司 | Magnetic control fluid mechanics performance testing device based on flow pattern |
| CN106002374A (en) * | 2016-06-24 | 2016-10-12 | 哈尔滨理工大学 | Damping type adjustable special tool based on integral impeller milling and damping method |
| CN110219218A (en) * | 2019-05-20 | 2019-09-10 | 清华大学 | A kind of magnetorheological temporary pavement |
| CN112571151A (en) * | 2020-10-21 | 2021-03-30 | 重庆工程职业技术学院 | Device for measuring additional load loss coefficient of milling machine without cutting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003130121A (en) * | 2001-10-26 | 2003-05-08 | Matsushita Electric Works Ltd | Viscosity-varying device |
| US20080034383A1 (en) * | 2004-11-12 | 2008-02-07 | Harwin William S | Damping Mechanisms |
| CN201651152U (en) * | 2009-09-25 | 2010-11-24 | 关新春 | Passive shear-type magnetorheological fluid damper |
| CN102767589A (en) * | 2012-07-02 | 2012-11-07 | 江苏科技大学 | Magneto-rheological damper adjustable in damping channel height |
| CN203685967U (en) * | 2014-01-26 | 2014-07-02 | 福建工程学院 | Single-electrode flat-faced plate type magneto-rheological shock absorber |
-
2014
- 2014-01-26 CN CN201410037427.9A patent/CN103939518B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003130121A (en) * | 2001-10-26 | 2003-05-08 | Matsushita Electric Works Ltd | Viscosity-varying device |
| US20080034383A1 (en) * | 2004-11-12 | 2008-02-07 | Harwin William S | Damping Mechanisms |
| CN201651152U (en) * | 2009-09-25 | 2010-11-24 | 关新春 | Passive shear-type magnetorheological fluid damper |
| CN102767589A (en) * | 2012-07-02 | 2012-11-07 | 江苏科技大学 | Magneto-rheological damper adjustable in damping channel height |
| CN203685967U (en) * | 2014-01-26 | 2014-07-02 | 福建工程学院 | Single-electrode flat-faced plate type magneto-rheological shock absorber |
Non-Patent Citations (1)
| Title |
|---|
| 关新春: "磁流变减振驱动器的响应时间试验与分析", 《地震工程与工程振动》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568737A (en) * | 2015-01-08 | 2015-04-29 | 重庆材料研究院有限公司 | Magnetic control fluid mechanics performance testing device based on flow pattern |
| CN104568737B (en) * | 2015-01-08 | 2017-11-10 | 重庆材料研究院有限公司 | Magnetic control hydrodynamic performance test device based on flow pattern |
| CN106002374A (en) * | 2016-06-24 | 2016-10-12 | 哈尔滨理工大学 | Damping type adjustable special tool based on integral impeller milling and damping method |
| CN110219218A (en) * | 2019-05-20 | 2019-09-10 | 清华大学 | A kind of magnetorheological temporary pavement |
| CN112571151A (en) * | 2020-10-21 | 2021-03-30 | 重庆工程职业技术学院 | Device for measuring additional load loss coefficient of milling machine without cutting |
| CN112571151B (en) * | 2020-10-21 | 2022-01-28 | 重庆工程职业技术学院 | Device for measuring additional load loss coefficient of milling machine without cutting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939518B (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105546023B (en) | A kind of combination shock absorber based on MR damper | |
| CN100478581C (en) | Parallel type vibration isolation buffer based on magneto-rheological technology | |
| CN102619926B (en) | Stable-type damping device | |
| CN206429608U (en) | A kind of vibration damper with adjustable damping | |
| CN103939518B (en) | A kind of one pole flat-faced tube magneto-rheological vibration damper | |
| CN104455177A (en) | Automobile active self-adaption type shock absorber | |
| CN104763768A (en) | Inert and damping integrated gas-filled damper | |
| CN2809329Y (en) | Magnetic vibration damper | |
| CN103939519B (en) | A kind of bipolar flat-faced tube magneto-rheological vibration damper | |
| CN204004154U (en) | A kind of shearing bitubular magneto-rheological vibration damper | |
| CN104132091B (en) | A kind of shearing bitubular magneto-rheological vibration damper | |
| WO2023279748A1 (en) | Hybrid damping mode-based high-output-force vibration isolation mount | |
| CN105351435A (en) | Multi-spring motorcycle vibration reducer | |
| CN103047335A (en) | Inertial resistance type vibration absorber | |
| CN203685967U (en) | Single-electrode flat-faced plate type magneto-rheological shock absorber | |
| CN202531725U (en) | Double-barrel shock absorber | |
| CN104179876A (en) | Bipolar corrugated plate magnetorheological damper | |
| CN203796846U (en) | Double-pole flat plate type magneto-rheological damper | |
| CN204004155U (en) | A kind of bipolar corrugated plate dst magneto-rheological vibration damper | |
| CN105443648A (en) | Motorcycle shock absorber with high viscoelasticity | |
| CN206398000U (en) | A kind of variation rigidity mutative damp shock absorber | |
| CN1912418B (en) | Oil-hydraulic-air multimedia coupling vibration damper | |
| CN104196947A (en) | Vibration damping device and method of stamping machine tool | |
| CN114838082B (en) | Multistage variable damping variable stiffness shock absorber based on magnetorheological material | |
| CN116324210A (en) | Shock absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |