CN105889397B - A kind of single rod bitubular magneto-rheological damper with double-coil - Google Patents
A kind of single rod bitubular magneto-rheological damper with double-coil Download PDFInfo
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- CN105889397B CN105889397B CN201610380017.3A CN201610380017A CN105889397B CN 105889397 B CN105889397 B CN 105889397B CN 201610380017 A CN201610380017 A CN 201610380017A CN 105889397 B CN105889397 B CN 105889397B
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- piston
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- inner cylinder
- cylinder
- coil
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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
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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
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
Abstract
The invention belongs to a kind of single rod bitubular magneto-rheological damper with double-coil；It is connected including the upper lift ring with flying-ring bush component, upper lift ring by piston rod with piston, inner cylinder outer cover is equipped with outer barrel, and outer barrel top is equipped with upper end cover, and outer barrel bottom is equipped with bottom end cover；Upper magnetic isolation plate is provided between upper end cover at the top of inner cylinder and outer barrel, the first bolt is connected through upper magnetic isolation plate with piston upper stopper；The boss for clamping coil block is offered in the side wall of outer barrel upper and lower part respectively, magnetism-isolating loop is housed on coil block, coil is housed outside magnetism-isolating loop；Lower magnetic isolation plate is provided between inner cylinder and outer barrel bottom and bottom end cover, the second bolt is connected through bottom end cover and lower magnetic isolation plate with block under piston, and outer barrel barrel is provided with conduit, and conduit is connected with cylinder block bottom, and cylinder piston is provided with cylinder block；Inner cylinder top is connected with outer barrel top, and inner cylinder bottom is connected with outer barrel bottom；With taking into full account the advantages of automobile ride and handling stability need to absorber damping force.
Description
Technical field
The invention belongs to absorber technical field, and in particular to a kind of single rod bitubular magneto-rheological damper with double-coil.
Background technology
With gradually stepping up for living standards of the people, people propose higher want to the comfortableness and handling stability of vehicle
Ask, therefore good automobile ride and remarkable handling stability have become the importance that must take into consideration in current Automobile Design
Energy.
The major function of automobile suspension system is to weaken the vibration from different road surfaces, improves the riding comfort of vehicle,
And improve the handling stability of automobile.The rigidity of traditional passive suspension, damped coefficient will not be with the changes on running car road surface
And actively adjust, it is impossible to fully meet damping requirements of the automobile under various driving cycles, full active suspension system can basis
The driving cycle of automobile changes rigidity and the damping of suspension in real time, can meet the damping requirements under different driving cycles, still
External energy supply and complicated control strategy are needed, it is expensive；The characteristics of semi-active suspension is not change suspension
Rigidity, only changes the damping of shock absorber, hardly consumes vehicle power during work, is mainly reflected in the intelligent control of shock absorber
On, its damping property have found balance between passive suspension and full Active suspension between performance and cost, and half is actively outstanding
Frame system has become the Main Trends of The Development of suspension system.
Magneto-rheological vibration damper utilizes magnetic flow liquid viscosity controllable characteristics, and realizing the continuous of magneto-rheological vibration damper damping can
Adjust, after applying electric current (general maximum up to 2.5~3A) to magnetic flow liquid, the damping force of MR fluid shock absorber can be carried significantly
It height, not only can fully improve automobile ride, and the control to automobile handling stability can also be greatly enhanced, reduce automobile and turn
To when angle of heel and angle of pitch during braking, control the posture of body of a motor car.Therefore MR fluid shock absorber is as half active
The main element of suspension, it is designed and developed with good market prospects, and the country is also in the research and development of products stage at present.
Magnetic flow liquid is not when applying during magnetic field, magnetic-particle random distribution in base fluid, and flow resistance is small；Applying
Behind magnetic field, the magnetic-particle of suspension attracts each other and is arranged in the chain knot parallel with magnetic direction under the influence of a magnetic field
Structure, flow resistance are big.Magnetic flow liquid becomes class solid-state after magnetic field is applied by liquid, and this change procedure is that moment (ms levels) is complete
Into, its viscosity increases several orders of magnitude and lost flowability, and magnetic flow liquid quickly becomes free-flowing again after magnetic field is removed
Liquid, this change of magnetic flow liquid is continuous, reversible.
The content of the invention
The defects of it is an object of the invention to overcome in the prior art and provide one kind in preferable road conditions, apply it is smaller
Electric current, obtain good automobile ride, increase electric current in poor road conditions, reach preferable damping property, in automobile
When turning to or braking, increase electric current, reduce automobile side inclination angle and the angle of pitch respectively, realize and automobile attitude is controlled；Have
Take into full account a kind of single rod bitubular twin coil magneto-rheological vibration damping that automobile ride and handling stability need to absorber damping force
Device.
The object of the present invention is achieved like this：Pass through piston rod including the upper lift ring with flying-ring bush component, upper lift ring
It is connected with the piston being arranged on inside inner cylinder, the outer cover of inner cylinder is equipped with the outer barrel being connected with inner cylinder, the top suit of outer barrel
There is upper end cover, the bottom of outer barrel is set with bottom end cover；It is provided with upper magnetic isolation plate between the top and upper end cover of inner cylinder and outer barrel, first
Bolt is connected through upper magnetic isolation plate with the piston upper stopper on inner cylinder；In the side wall of outer barrel upper and lower part respectively
The boss for clamping coil block is offered, magnetism-isolating loop is installed on coil block, the outside of described magnetism-isolating loop is provided with coil；
Lower magnetic isolation plate is provided between the bottom and bottom end cover of inner cylinder and outer barrel, the second bolt is through bottom end cover and lower magnetic isolation plate with setting
Put in inner cylinder that block is connected under the piston of bottom, the barrel of the outer barrel middle and lower part is provided with conduit, conduit and cylinder block
Bottom is connected, and the inside of the cylinder block is provided with cylinder piston；Described inner cylinder top is connected with the top of outer barrel, under inner cylinder
Portion is connected with outer barrel bottom.
Preferably, holding screw is installed on the described outer barrel position corresponding with coil block.
Preferably, the bottom of the bottom end cover is set with bolted cover, and the bottom of bolted cover is provided with lower lift ring.
Preferably, O-ring seal is installed between the coil block and magnetism-isolating loop.
Preferably, piston rod seals are installed between piston rod and the piston upper stopper.
Preferably, piston packing is installed between the piston and inner cylinder.
Preferably, the cylinder end piece of valve cock is provided with the top of the cylinder block, between cylinder block and cylinder piston
Cylinder piston sealing ring is installed.
Preferably, upper annular damper is formed between the top of the inner cylinder, upper magnetic isolation plate, coil block and piston upper stopper
Passage；Lower annular damper passage is formed under the bottom of inner cylinder, lower magnetic isolation plate, piston between block and coil block；Upper annular resistance
The width of Buddhist nun's passage and lower annular damper passage is respectively 1~2mm.
Preferably, first bolt at least two.
The present invention applies less electric current, obtains good automobile ride, in poor road conditions in preferable road conditions
Upper increase electric current, reaches preferable damping property, in motor turning or braking, increases electric current, reduces automobile roll respectively
Angle and the angle of pitch, realize and automobile attitude is controlled；With taking into full account automobile ride and handling stability to absorber damping force
The advantages of needing.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the partial enlarged drawing of part A in Fig. 1；
Fig. 3 is the partial enlarged drawing of part B in Fig. 1；
Fig. 4 is the partial enlarged drawing of C portion in Fig. 1.
Embodiment
In order to which the technical characteristic of invention, purpose and effect are more clearly understood, now control brief description of the drawings is of the invention
Embodiment, in the various figures identical label represent identical part.It is each to scheme only schematic earth's surface to make simplified form
Part related to the present invention is shown, they do not represent its practical structures as product.
As shown in Figure 1,2,3, 4, the present invention is a kind of single rod bitubular magneto-rheological damper with double-coil, including band suspension ring serve as a contrast
Upper lift ring 2, the upper lift ring 2 of set component 1 are connected by piston rod 26 with the piston 22 being arranged on inside inner cylinder 9, the outside of inner cylinder 9
The outer barrel 6 being connected with inner cylinder 9 is set with, the top of outer barrel 6 is set with upper end cover 4, and the bottom of outer barrel 6 is set with bottom end cover
15；Be provided with upper magnetic isolation plate 3 between the top and upper end cover 4 of inner cylinder 9 and outer barrel 6, the first bolt 25 through upper magnetic isolation plate 3 with
Piston upper stopper 8 on inner cylinder 9 is connected；Offered respectively in the side wall of the upper and lower part of outer barrel 6 and clamp coil block 7
Boss, magnetism-isolating loop 5 is installed on coil block 7, the outside of described magnetism-isolating loop 5 is provided with coil 24；Inner cylinder 9 and outer barrel 6
Bottom and bottom end cover 15 between be provided with lower magnetic isolation plate 18, the second bolt 17 is through bottom end cover 15 and lower magnetic isolation plate 18 with setting
Block 19 under the piston of bottom is put in inner cylinder 9 to be connected, the barrel of the middle and lower part of outer barrel 6 is provided with conduit 13, conduit 13 and
The bottom of cylinder block 11 is connected, and the inside of the cylinder block 11 is provided with cylinder piston 12；The described top of inner cylinder 9 and outer barrel 6
Top is connected, and the bottom of inner cylinder 9 is connected with the bottom of outer barrel 6.Described outer barrel 6 is pacified on the position corresponding with coil block 7
Equipped with holding screw 14.The bottom of the bottom end cover 15 is set with bolted cover 16, and the bottom of bolted cover 16 is provided with lower lift ring 27.
O-ring seal 20 is installed between the coil block 7 and magnetism-isolating loop 5.Installed between the piston rod 26 and piston upper stopper 8
There are piston rod seals 23.Piston packing 21 is installed between the piston 22 and inner cylinder 9.The top peace of the cylinder block 11
Equipped with the cylinder end piece 10 with valve cock 29, cylinder piston sealing ring 28 is installed between cylinder block 11 and cylinder piston 12.Institute
Composition goes up annular damper passage between stating top, upper magnetic isolation plate 3, coil block 7 and the piston upper stopper 8 of inner cylinder 9；Inner cylinder 9
Lower annular damper passage is formed under bottom, lower magnetic isolation plate 18, piston between block 19 and coil block 7；Upper annular damper passage
Width with lower annular damper passage is respectively 1~2mm.First bolt 25 at least two.
As shown in Figure 1, 2, 3, the present invention is applying 2.5A electric currents, upper resistance according to the absorber damping force formula pushed over
Buddhist nun's passage and lower damp channel are respectively annular and when width are respectively 1mm, and damping force output improves 10 times or so, can be abundant
Meet the damping force needs that automobile is lifted to ride comfort and handling stability.
The present invention includes inner cylinder 9 and outer barrel 6, and it is by the first bolt 25 by upper magnetic isolation plate 3 and piston upper stopper 8
It is fixed together, coil block 7 is placed on the inside of the upper end of outer barrel 6, is positioned by the boss inside outer barrel 6, in coil block 7
On magnetism-isolating loop 5 is installed, the outside of described magnetism-isolating loop 5 is provided with coil 24；Upper end cover 4 is connected by screw thread and the upper end of outer barrel 6
It is connected together, while upper magnetic isolation plate 3, piston upper stopper 8, coil 24, coil block 7, magnetism-isolating loop 5 is positioned at inner cylinder 9 and outer
The upper end of cylinder 6, the upper end of inner cylinder 9 is positioned in the lower surface annular groove of magnetic isolation plate 3.By the second bolt 17 by bottom end cover
15th, block 19 is fixed together under lower magnetic isolation plate 18, piston, and coil block 7 is placed on into the lower end inside of outer barrel 6, passes through outer barrel 6
The boss positioning of interior bottom, is provided with magnetism-isolating loop 5, the outside of described magnetism-isolating loop 5 is provided with coil 24 on coil block 7；
Bottom end cover 15 is linked together by screw thread and the lower end of outer barrel 6, while by block 19, coil 24, line under lower magnetic isolation plate 18, piston
Circle block 7, magnetism-isolating loop 5 are positioned at the bottom of inner cylinder 9 and outer barrel 6.The lower end of inner cylinder 9 is positioned at the lower upper surface of magnetic isolation plate 18 simultaneously
In annular groove.Bolted cover 16 is linked together by screw thread and bottom end cover 15.In order to prevent coil block 7 from misplacing, outside shock absorber
The top and bottom of cylinder 6 are separately installed with the positioning screw 14 being connected with coil block 7.
Because magnetic flow liquid has very strong permeability, piston rod seals 23 are installed in the inner side of piston upper stopper 8, together
Sample is provided with piston packing 21 on the position of piston 22；For piston 22 during up and down motion, piston rod 26 can account for inner cylinder 9
Volume, cylinder block 11 is installed in the outside of outer barrel 6 for this, cylinder piston 12 is provided among cylinder block 11, cylinder piston 12
Upside is nitrogen, and the downside of cylinder piston 12 is magnetic flow liquid, in order to ensure the sealing of cylinder piston 12, in cylinder piston 12
On cylinder piston sealing ring 28 is installed, cylinder end piece 10 is connected by screw thread and cylinder block 11, and the lower end of cylinder block 11 passes through spiral shell
Line is connected with cylinder bottom end cover, and cylinder bottom end cover is connected by screw thread with conduit 13, and conduit 13 passes through screw thread with outer barrel of absorber 6
Link together.
The present invention can improve the ride comfort and handling stability and the needs to damping force of automobile, on good road surface, apply
Add less electric current, obtain good automobile ride, increase electric current on poor road surface, reach preferable damping property,
In motor turning or braking, increase electric current, reduce automobile side inclination angle and the angle of pitch respectively, realize to automobile attitude control
System.Enough damping forces must be exported to automobile ride control and handling stability control, magneto-rheological vibration damper in order to reach, in order to
The bigger absorber damping force of output, in addition to physical dimension, the selection of magnetic rheological liquid model and annular damper path clearance,
The number of turns of coil arrangement must just be increased, increase the controlled damp channel length of magnetic flow liquid.The present invention has following main feature
It is：(1) present invention includes upper annular damper passage and lower annular damper passage can be controlled by magnetic field so that controllable ring-shaped
The length of damp channel increases one times, can significantly lift the damping force of the present invention；(2) coil is easily arranged, same to sample ruler
Very little shock absorber, the present invention can increase the number of turns of coil winding, so as to enhance the magnetic field of annular damper passage, reach increase
The purpose of damping force.The problem of monotubular unicoil damper piston head axial dimension is long is it also avoid simultaneously, is fully ensured that
The free travel of shock absorber, it is ensured that the convenience installed on vehicle.(3) due to adding coil turn, fully protecting
While demonstrate,proving damping force output, suitably damp channel gap can be increased, prevent magnetic flow liquid from being blocked up in annular damper passage
Plug, it also avoid magnetorheological hydraulic coupling inside shock absorber and situation about being mutated occur, avoid damping force curve and showing for deformity occur
As, it is ensured that rational shock absorber external characteristics.
As shown in Figure 1, 2, 3, when the present invention is in stretching travel, the magnetic of piston 22 and the drive upper piston area of piston rod 26
Rheology liquid is flowed up, and magnetic flow liquid is squeezed into the upper annular damper passage of upper end under the effect of the pressure, in upper annular damper
Channel position is acted on by coil magnetic field, viscosity increase, flow resistance increase, and magnetic flow liquid flows through annular damper passage
Afterwards, into the cavity between inner cylinder 9 and outer barrel 6, the cavity of resorption of piston 22 is then flowed into by lower annular damper passage, is equally existed
Also can be by the magnetic fields of coil, the increase of magnetic flow liquid viscosity, flow resistance increase, line in the lower annular damper passage of lower end
Electric current is bigger added by circle, and magnetic flow liquid is bigger in resistance suffered by upper annular damper passage and lower annular damper passage, magnetic flow liquid
Absorber damping force is bigger.When magneto-rheological vibration damper is in compression travel, magnetic flow liquid flowing is in opposite direction.
As shown in Fig. 1,4, in stretching travel, the pull-out of piston rod 26 makes to vacate a part of volume inside shock absorber, this
Partial volume is by the high pressure nitrogen pusher cylinder piston 12 in cylinder block 11 so that the lower end magnetic rheological liquid of nitrogen cylinder piston 12
Enter the lower cavity of piston 22 by annular damper passage under shock absorber.In same compression travel, magnetic current that piston rod accounts for
Become liquid and nitrogen cylinder body piston is entered by lower end annular damper passage.
In the description of the invention, it is necessary to which explanation, unless otherwise clearly defined and limited, term " setting ", " pacifies
Dress " etc. should be interpreted broadly, for example, it may be being fixedly connected, be integrally connected or be detachably connected；Can also
It is the connection of two element internals；Can be joined directly together, can also be indirectly connected by intermediary, for the general of this area
For logical technical staff, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.It is to be noted that
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than represent their significance level and order etc..Above
Detailed description being illustrated only for the feasibility embodiment of the present invention, they are simultaneously not used to the limitation present invention's
Protection domain, all equivalent implementations made without departing from skill spirit of the present invention, change and transformation should be included in the present invention
Protection domain within.
Claims (9)
1. a kind of single rod bitubular magneto-rheological damper with double-coil, including the upper lift ring (2) with flying-ring bush component (1), hang oneself
Ring (2) is connected by piston rod (26) piston (22) internal with being arranged on inner cylinder (9), it is characterised in that：The outside of inner cylinder (9)
The outer barrel (6) being connected with inner cylinder (9) is set with, the top of outer barrel (6) is set with upper end cover (4), the bottom suit of outer barrel (6)
There is bottom end cover (15)；Upper magnetic isolation plate (3), the first positioning spiral shell are provided between the top and upper end cover (4) of inner cylinder (9) and outer barrel (6)
Bolt (25) is connected through upper magnetic isolation plate (3) with the piston upper stopper (8) on inner cylinder (9)；Outer barrel (6) upper and lower part
The boss for clamping coil block (7) is offered in side wall respectively, magnetism-isolating loop (5) is installed on coil block (7), it is described every magnetic
The outside of ring (5) is provided with coil (24)；Lower magnetic isolation plate is provided between the bottom and bottom end cover (15) of inner cylinder (9) and outer barrel (6)
(18), piston of the second bolt (17) through bottom end cover (15) and lower magnetic isolation plate (18) with being arranged on inner cylinder (9) interior bottom
Lower block (19) is connected, and the barrel of outer barrel (6) middle and lower part is provided with conduit (13), conduit (13) and the bottom of cylinder block (11)
Portion is connected, and the inside of the cylinder block (11) is provided with cylinder piston (12)；Described inner cylinder (9) top and the top of outer barrel (6)
It is connected, inner cylinder (9) bottom is connected with outer barrel (6) bottom.
A kind of 2. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：Described is outer
Cylinder (6) is provided with holding screw (14) on the position corresponding with coil block (7).
A kind of 3. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：The lower end
The bottom of lid (15) is set with bolted cover (16), and the bottom of bolted cover (16) is provided with lower lift ring (27).
A kind of 4. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：The coil
O-ring seal (20) is installed between block (7) and magnetism-isolating loop (5).
A kind of 5. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：The piston
Piston rod seals (23) are installed between bar (26) and piston upper stopper (8).
A kind of 6. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：The piston
(22) piston packing (21) is installed between inner cylinder (9).
A kind of 7. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：The cylinder
The cylinder end piece (10) of valve cock (29) is provided with the top of body (11), is installed between cylinder block (11) and cylinder piston (12)
There is cylinder piston sealing ring (28).
A kind of 8. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：The inner cylinder
(9) upper annular damper passage is formed between top, upper magnetic isolation plate (3), coil block (7) and piston upper stopper (8)；Inner cylinder
(9) lower annular damper passage is formed under bottom, lower magnetic isolation plate (18), piston between block (19) and coil block (7)；Upper ring
The width of shape damp channel and lower annular damper passage is respectively 1~2mm.
A kind of 9. single rod bitubular magneto-rheological damper with double-coil according to claim 1, it is characterised in that：Described first
Bolt (25) at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610380017.3A CN105889397B (en) | 2016-05-26 | 2016-05-26 | A kind of single rod bitubular magneto-rheological damper with double-coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610380017.3A CN105889397B (en) | 2016-05-26 | 2016-05-26 | A kind of single rod bitubular magneto-rheological damper with double-coil |
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| CN105889397A CN105889397A (en) | 2016-08-24 |
| CN105889397B true CN105889397B (en) | 2018-01-02 |
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| CN201610380017.3A Active CN105889397B (en) | 2016-05-26 | 2016-05-26 | A kind of single rod bitubular magneto-rheological damper with double-coil |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269757A (en) * | 2017-06-27 | 2017-10-20 | 北京航空航天大学 | A kind of MR fluid shock absorber of Direct Action Type rigidity controllable |
| CN207161607U (en) * | 2017-07-13 | 2018-03-30 | 盐城市步高汽配制造有限公司 | A kind of double-cylinder type magneto-rheological vibration damper of inside and outside twin coil |
| CN107314077B (en) * | 2017-07-13 | 2023-01-24 | 盐城市步高汽配制造有限公司 | Double-cylinder magneto-rheological damper with inner and outer double coils |
| CN108407887B (en) * | 2018-05-02 | 2019-11-26 | 吉林大学 | Power sense feedback device and application method made from magnetorheological fluid birotor |
| CN110296174B (en) * | 2019-07-11 | 2021-02-26 | 南京林业大学 | Shear mode magneto-rheological shock absorber |
| CN110822009B (en) * | 2019-11-26 | 2021-02-05 | 重庆大学 | Separated double-cylinder magnetorheological damper |
| CN111722162B (en) * | 2020-07-15 | 2022-09-02 | 中国民航大学 | Magnetic field testing device for polar coordinate type magnetorheological damper |
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| CN201786985U (en) * | 2010-09-26 | 2011-04-06 | 华侨大学 | Magneto-rheological damper with double-coil |
| CN202048132U (en) * | 2010-12-13 | 2011-11-23 | 成都晋林工业制造有限责任公司 | Magnetic rheologic type intelligent vibration damper |
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| US9109654B2 (en) * | 2012-06-12 | 2015-08-18 | Inno Vital Systems, Inc. | Failsafe magnetorheological (MR) energy absorber |
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| CN201786985U (en) * | 2010-09-26 | 2011-04-06 | 华侨大学 | Magneto-rheological damper with double-coil |
| CN202048132U (en) * | 2010-12-13 | 2011-11-23 | 成都晋林工业制造有限责任公司 | Magnetic rheologic type intelligent vibration damper |
| CN103089889A (en) * | 2011-11-03 | 2013-05-08 | 长春孔辉汽车科技有限公司 | Magneto-rheological pump type variable-damping shock absorber |
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| CN105889397A (en) | 2016-08-24 |
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