CN114658787A - Rotary shearing type magnetorheological vibration damping device and vibration damping method suitable for micro vibration - Google Patents
Rotary shearing type magnetorheological vibration damping device and vibration damping method suitable for micro vibration Download PDFInfo
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- CN114658787A CN114658787A CN202210187263.2A CN202210187263A CN114658787A CN 114658787 A CN114658787 A CN 114658787A CN 202210187263 A CN202210187263 A CN 202210187263A CN 114658787 A CN114658787 A CN 114658787A
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- magnetorheological
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- damper
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
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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
- F16F9/3207—Constructional features
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a rotary shearing type magnetorheological vibration damping device and a vibration damping method suitable for micro vibration, wherein the device comprises a main shell made of non-magnetic materials, and the main shell is provided with two separate cavities, namely a first separate cavity and a second separate cavity; a gear drive amplification mechanism disposed in the first compartment; and at least one end of the rack is exposed outside the main shell, the part of the rack, which is arranged in the first separation cavity in the main shell in a penetrating way, is meshed with an input gear in the gear transmission amplifying mechanism, and a transmission shaft of an output gear in the gear transmission amplifying mechanism extends into the second separation cavity and is connected with a rotary magneto-rheological vibration attenuation damper in the second separation cavity. The device solves the problem of leakage of the traditional magnetorheological fluid damping device; the gear transmission amplifying mechanism simultaneously realizes the amplification of micro vibration and the conversion of translation rotation, and effectively improves the sensitivity of the damping device.
Description
Technical Field
The invention relates to a rotary shearing type magnetorheological vibration damping device and method suitable for micro vibration, and belongs to the field of civil engineering vibration damping.
Background
The magnetic rheological liquid vibration damper is one kind of vibration damper widely used in civil structure, automobile structure, space structure and other fields. The magnetic rheological liquid has the main principle that magnetic particles randomly distributed in the magnetic rheological liquid form a chain or columnar structure along the direction of a magnetic field under the action of the magnetic field, the chain or columnar structure is in a solid-like state, so that different damping force or rigidity is shown, and the mechanical property of the magnetic rheological liquid has the controllable characteristic of changing along with the change of the intensity of an external magnetic field, so that the characteristic can be utilized to realize the real-time controllable control of different vibrations.
Most of traditional magnetorheological fluid vibration dampers are piston extrusion type, and transverse movement of a piston extrudes magnetorheological fluid to achieve vibration reduction. However, this method is not sensitive enough to small vibration and is large in size, so that it is not suitable for sensitive vibration damping in a small space.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a rotary shear type magnetorheological fluid vibration damping device and a vibration damping method suitable for micro vibration. Compared with the traditional shearing type magnetorheological vibration damping device, the device amplifies the tiny vibration of the input shaft in the gear transmission amplifying mechanism and reflects the amplified tiny vibration on the output shaft in the gear transmission amplifying mechanism through the amplification effect of the gear pair on the torque and the rotating speed, so that the vibration damping effect is more sensitive. Meanwhile, the traditional transverse motion mode is changed into a rotary motion mode, the structural length is reduced in the transverse direction, and the rotary shear type magnetorheological fluid vibration damper is suitable for micro vibration. Compared with the traditional magnetorheological fluid vibration damper, the device can use a small vibration to enable the vibration damper to output larger damping force, and has better vibration damping effect.
In order to realize the purpose, the invention adopts the following technical scheme:
a rotary shear type magnetorheological vibration damper suitable for tiny vibration comprises:
a main housing made of a non-magnetically permeable material, provided with two compartments, a first compartment and a second compartment, respectively;
a rack is arranged in the first separation cavity, the rack is horizontally arranged and can realize relative movement with the main shell, at least one end of the rack extends to the outer side of the main shell and is connected with an external structure,
a rotary magneto-rheological vibration attenuation damper is arranged in the second separation cavity;
the magnetic resonance vibration damper is characterized by further comprising a gear transmission amplifying mechanism, the gear transmission amplifying mechanism is arranged in the first separating chamber, the part, penetrating through the main shell, of the rack is meshed with an input gear in the gear transmission amplifying mechanism, the input gear is in transmission connection with an output gear in the gear transmission amplifying mechanism through two connecting gears, and an output shaft connected with the output gear is connected with a rotating shaft of the rotary type magnetic resonance vibration damping damper located in the second separating chamber.
The gear transmission amplification mechanism comprises:
a first cylindrical gear as an input gear;
the second cylindrical gear is used as an output gear;
the first cylindrical gear and the second cylindrical gear realize the amplification transmission of the rotating speed and the torque through a duplicate gear;
an input shaft in the gear transmission amplifying mechanism and an output shaft in the gear transmission amplifying mechanism are arranged in parallel, and a rotating shaft of the rotary magnetorheological vibration damper and the output shaft in the gear transmission amplifying mechanism are coaxially arranged.
The shell body is characterized in that a horizontal placing surface is arranged on one side of the shell body of the main shell body, through grooves for the racks to pass through are formed in the two sides of the shell body of the first separation cavity on the main shell body, and the racks penetrate through the through grooves and are parallel to the horizontal placing surface.
The rotary magnetorheological damper comprises:
the auxiliary shell is fixedly arranged in the second compartment of the main shell;
the brake disc is fixedly connected to a transmission shaft of an output gear in the gear transmission amplifying mechanism, and the periphery of the brake disc is surrounded by a magnetic conductive material;
the magnetorheological fluid is filled between the surface of the brake disc and the magnetic conductive material;
the excitation coil is arranged between the side surface of the brake disc and the magnetic conductive material;
and the magnetorheological vibration damping controller is arranged outside and is connected with the excitation coil through a lead.
And a heat insulation layer is arranged between the magnet exciting coil and the brake disc and is used for isolating heat generated by the magnet exciting coil when the magnet exciting coil is electrified and reducing the influence of temperature on the magnetorheological fluid.
The magnetorheological fluid is doped with ferromagnetic particles.
The magnetic conductive material of the rotary magnetorheological vibration damper and the auxiliary shell together act as a stator.
The surface of the brake disc is provided with the protruded knife face, so that the brake disc can better cut magnetic particles in the magnetorheological fluid.
Magnetorheological fluid is filled between the surface of the brake disc and the magnetic conductive material, and the whole device is arranged along the radial direction of the input shaft in the gear amplification mechanism, so that the problem of fluid leakage of the traditional single-rod or double-rod magnetorheological vibration damping device is solved.
The invention further discloses a vibration reduction method of the rotary shearing type magneto-rheological vibration reduction device based on the micro-vibration application, which comprises the following steps:
when the external structure generates micro vibration, the rack is driven to move linearly, the rack amplifies the rotating speed and the torque to the transmission shaft of the output gear through the gear transmission amplifying mechanism, and the transmission shaft of the output gear realizes vibration reduction through the rotary magneto-rheological vibration reduction damper;
the intensity of the magnetic field is controlled by changing the current of the magnet exciting coil in the rotary type magneto-rheological vibration attenuation damper, so that the rigidity of the magneto-rheological fluid is changed along with the actual requirement of the vibration attenuation field.
Has the advantages that:
1) compared with the prior art, the rotary shear type magnetorheological fluid vibration damper suitable for micro vibration can realize the precise control of the micro vibration through the amplification effect of the gear pair on the rotating speed and the torque under the condition of small vibration amplitude.
2) Compared with the traditional rotary shearing type magnetorheological vibration damping device, the rotary shearing type magnetorheological vibration damping device has the advantages that all the parts are compactly arranged, and the occupied space is small.
3) The protruding knife face of the brake disc can better cut the magnetic particles in the magnetorheological fluid.
4) When the device is used, the whole device is placed along the radial direction of an input shaft in the gear amplification mechanism, the problem of liquid leakage of the traditional single-rod or double-rod magnetorheological vibration damping device is solved, and the sealing requirement is correspondingly reduced.
5) The transmission ratio of the gear and the rack can be changed, and the output of the magnetorheological vibration isolation and damping device can be controlled according to the actual requirement.
Drawings
Fig. 1 is a schematic structural view of a rotary shear type vibration damping device suitable for minute vibrations according to the present invention.
FIG. 2 is an exploded view of the rotary shear type magnetorheological damper device for small vibrations according to the present invention.
FIG. 3 is a front sectional view of the sub-housing of the rotary shear type magnetorheological damper device suitable for small vibrations in accordance with the present invention.
FIG. 4 is a schematic view of the magnetic lines of force of the rotary shearing type magnetorheological isolating and damping device suitable for small vibration according to the present invention.
Wherein, 1, a main shell; 2. a sub-housing; 3. an input shaft in the gear transmission amplifying mechanism; 4. an output shaft in the gear transmission amplifying mechanism; 5. a duplicate gear shaft; 6. a shaft sleeve; 7, a clamp spring; 8. a duplicate gear; 9. a first spur gear; 10. a second spur gear; 11. a rack; 12. a bearing; 13. a field coil; 14. a magnetic conductive material; 15. a thermal insulation layer; 16. magnetorheological fluid; 17 a lead hole; 18. a brake disk.
Detailed Description
The following describes in detail an embodiment of a rotating shear type magnetorheological fluid vibration damping device suitable for small vibrations, with reference to the accompanying drawings and specific examples.
A rotary shearing type magnetorheological vibration damper suitable for tiny vibration is shown in figures 1-3 in an exploded structure view, and comprises:
and the rack 11 is arranged in the through groove in the main shell 1 and is meshed with the first straight-tooth cylindrical gear 9 on the input shaft 3 in the gear transmission amplification mechanism.
The main shell 1 made of non-magnetic material is installed on the input shaft 3 in the gear transmission amplification mechanism through a shaft sleeve 6, and the first straight-tooth cylindrical gear 9 is fixed on the input shaft 3 in the gear transmission amplification mechanism through interference fit on the input shaft 3 in the gear transmission amplification mechanism.
The duplicate gear 8 is fixed at the front end of the main shell through a duplicate gear shaft and a duplicate gear shaft 5.
And the second straight toothed spur gear 10 is also fixed on the output shaft 4 of the gear transmission amplification mechanism through interference fit.
The number of teeth of the first straight-toothed cylindrical gear 9 on the input shaft 3 in the gear transmission amplification mechanism is far greater than that of the second straight-toothed cylindrical gear 10 on the output shaft 4 in the gear transmission amplification mechanism. A first straight-tooth cylindrical gear 9 on an input shaft 3 in the gear transmission amplification mechanism is matched with a gear with a small tooth number on a duplicate gear 8, and a second straight-tooth cylindrical gear 10 on an output shaft 4 in the gear transmission amplification mechanism is matched with a gear with a large tooth number on the duplicate gear 8.
Relative rotary motion needs to be realized between the output shaft 4 in the gear transmission amplification mechanism and the main shell 1 and the auxiliary shell 2, the rotating speed of the output shaft 4 in the gear transmission amplification mechanism is far greater than that of the input shaft 3 in the gear transmission amplification mechanism, and a bearing 12 is arranged between the output shaft 4 and the auxiliary shell 2 in the gear transmission amplification mechanism to enable the output shaft and the auxiliary shell 2 to realize the relative rotary motion.
In order to prevent the radial movement of the output shaft 4 in the gear transmission amplification mechanism, a snap spring 7 is arranged on the left side of the output shaft 4 in the gear transmission amplification mechanism to fix the output shaft in the radial direction.
The gear transmission shaft 4 is fixed on the main shell 1, and the clamp springs 7 are arranged at two ends of the gear transmission shaft and play a role in radially fixing the duplicate gear shaft 5.
The bottom of the sub-shell 2 is fixed with the main shell 1. The sub-housing 2 houses a magnetically conductive material acting as a stator.
The brake disc 18 is secured to the output shaft 4 of the gear amplification mechanism by a metal adhesive. The brake disc is a disc with a diameter larger than the height, the disc surface of the brake disc is provided with four raised knife faces, and magnetorheological fluid doped with ferromagnetic particles is uniformly distributed between the upper surface and the lower surface of the brake disc and the magnetic conductive material.
The field coil 13 is arranged on the side surface of the brake disc, above the heat insulation layer 15. And the magnet exciting coil is led out from a magnet exciting coil lead hole 17 and is connected with an external magneto-rheological vibration damping controller.
Furthermore, a heat insulation layer is arranged between the excitation coil and the brake disc and used for isolating heat generated after the excitation coil is electrified and preventing the performance of the magnetorheological fluid from being influenced by overhigh temperature.
As shown in fig. 4, the sub-housing 2, the magnetic conductive material 14, the excitation coil 13, the heat insulating layer 15, and the brake disk 18 are formed in a layer-by-layer surrounding structure. The auxiliary shell is made of a non-magnetic conductive material, and the influence of an external magnetic field on the magnetorheological fluid is avoided. The magnetic conductive material 14 is arranged, so that the trend of magnetic lines of force of the magnet exciting coil can be optimized, and the working performance of the magneto-rheological isolating and vibration damping device is improved.
The invention relates to a vibration damping method of a rotary shearing type magnetorheological vibration damper suitable for micro vibration, which comprises the following steps of:
when the external structure generates micro vibration, the rotating speed and the torque are amplified to the transmission shaft of the output gear through the rack and the gear transmission amplifying mechanism, and the transmission shaft of the output gear realizes vibration reduction through the rotary magneto-rheological vibration reduction damper;
the intensity of the magnetic field is controlled by changing the current of the magnet exciting coil in the rotary type magneto-rheological vibration attenuation damper, so that the rigidity of the magneto-rheological fluid is changed along with the actual requirement of the vibration attenuation field.
The above description is only a specific embodiment of the present invention, and is not intended to limit the embodiment of the present invention. Those skilled in the art can easily conceive of changes or substitutions based on the above description, and such changes and substitutions are intended to be included within the scope of the present invention.
Claims (10)
1. A rotary shearing type magneto-rheological vibration damper suitable for micro vibration is characterized by comprising the following components:
a main housing made of a non-magnetically permeable material, provided with two compartments, a first compartment and a second compartment, respectively;
a rack is arranged in the first separation cavity, the rack is horizontally arranged and can realize relative movement with the main shell, at least one end of the rack extends to the outer side of the main shell and is connected with an external structure,
a rotary magneto-rheological vibration attenuation damper is arranged in the second separation cavity;
the magnetic resonance vibration damper is characterized by further comprising a gear transmission amplifying mechanism, the gear transmission amplifying mechanism is arranged in the first separating chamber, the part, penetrating through the main shell, of the rack is meshed with an input gear in the gear transmission amplifying mechanism, the input gear is in transmission connection with an output gear in the gear transmission amplifying mechanism through two connecting gears, and an output shaft connected with the output gear is connected with a rotating shaft of the rotary type magnetic resonance vibration damping damper located in the second separating chamber.
2. The rotary shear type magnetorheological damper device for small vibration according to claim 1, wherein the gear amplification mechanism comprises:
a first cylindrical gear as an input gear;
the second cylindrical gear is used as an output gear;
the first cylindrical gear and the second cylindrical gear realize the amplification transmission of the rotating speed and the torque through a duplicate gear;
an input shaft in the gear transmission amplifying mechanism and an output shaft in the gear transmission amplifying mechanism are arranged in parallel, and a rotating shaft of the rotary magnetorheological vibration damper and the output shaft in the gear transmission amplifying mechanism are coaxially arranged.
3. The rotary shear type magnetorheological vibration damper suitable for slight vibration according to claim 1, wherein one side of the housing of the main housing is provided with a horizontal placing surface, through grooves for the racks to pass through are formed in the main housing at two sides of the housing of the first separation cavity, and the racks are arranged on the through grooves in a penetrating manner and are parallel to the horizontal placing surface.
4. The rotary shear type magnetorheological vibration damper for small vibration according to claim 1, wherein the rotary type magnetorheological vibration damper comprises:
the auxiliary shell is fixedly arranged in the second compartment of the main shell;
the brake disc is fixedly connected to a transmission shaft of the output gear in the gear transmission amplifying mechanism, and the periphery of the brake disc is surrounded by a magnetic conductive material;
the magnetorheological fluid is filled between the surface of the brake disc and the magnetic conductive material;
the excitation coil is arranged between the side surface of the brake disc and the magnetic conductive material;
and the magnetorheological vibration damping controller is arranged outside and is connected with the excitation coil through a lead.
5. The rotary shear type magnetorheological vibration damper suitable for small vibration according to claim 4, wherein a heat insulation layer is arranged between the exciting coil and the brake disc and used for isolating heat generated by the exciting coil when the exciting coil is electrified and reducing the influence of temperature on the magnetorheological fluid.
6. The rotary shear type magnetorheological vibration damper suitable for small vibration according to claim 4, wherein the magnetorheological fluid is doped with ferromagnetic particles.
7. The rotary shear type magnetorheological vibration damper adapted to vibrate slightly as claimed in claim 4, wherein the magnetic conductive material of the rotary type magnetorheological vibration damper and the secondary housing together act as a stator.
8. The rotary shear type magnetorheological vibration damper suitable for small vibration according to claim 4, wherein the surface of the brake disc is provided with a protruded knife face, so that the brake disc can better cut magnetic particles in the magnetorheological fluid.
9. The rotary shear type magnetorheological vibration damper suitable for small vibration as claimed in claim 4, wherein the magnetorheological fluid is filled between the surface of the brake disc and the magnetic conductive material, and the whole device is arranged along the radial direction of the input shaft in the gear amplification mechanism, so that the problem of fluid leakage of the traditional single-rod or double-rod magnetorheological vibration damper is avoided.
10. A vibration damping method based on the rotary shear type magnetorheological vibration damping device suitable for the small vibration of any one of claims 1 to 9 is characterized by comprising the following steps:
when the external structure generates micro vibration, the rack is driven to move linearly, the rack amplifies the rotating speed and the torque to the transmission shaft of the output gear through the gear transmission amplifying mechanism, and the transmission shaft of the output gear realizes vibration reduction through the rotary magneto-rheological vibration reduction damper;
the intensity of the magnetic field is controlled by changing the current of the magnet exciting coil in the rotary type magneto-rheological vibration attenuation damper, so that the rigidity of the magneto-rheological fluid is changed along with the actual requirement of the vibration attenuation field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210187263.2A CN114658787A (en) | 2022-02-28 | 2022-02-28 | Rotary shearing type magnetorheological vibration damping device and vibration damping method suitable for micro vibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210187263.2A CN114658787A (en) | 2022-02-28 | 2022-02-28 | Rotary shearing type magnetorheological vibration damping device and vibration damping method suitable for micro vibration |
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| CN114658787A true CN114658787A (en) | 2022-06-24 |
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| CN202210187263.2A Pending CN114658787A (en) | 2022-02-28 | 2022-02-28 | Rotary shearing type magnetorheological vibration damping device and vibration damping method suitable for micro vibration |
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Citations (10)
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|---|---|---|---|---|
| DE102011081961A1 (en) * | 2011-09-01 | 2013-03-07 | Robert Bosch Gmbh | Device i.e. hydraulic torsional vibration damper, for attenuating oscillation of drive train of combustion engine of motor car, has adjustment unit variably adjusting damping ratio according to evaluation of operating mode of engine |
| KR20140069824A (en) * | 2012-11-30 | 2014-06-10 | 조은혜 | Vibration generator |
| CN104499597A (en) * | 2014-12-31 | 2015-04-08 | 长安大学 | Viscous damper input displacement rate increasing device |
| CN104963984A (en) * | 2015-05-19 | 2015-10-07 | 合肥工业大学 | Two-dimensional, integrated and semi-automatic controllable vibration damper in longitudinal and vertical directions |
| CN204827827U (en) * | 2015-08-05 | 2015-12-02 | 芜湖职业技术学院 | Car magneto rheological damper energy conversion device |
| CN105626755A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Small rotary type magneto-rheological fluid damper used for reproducing passive force sense |
| CN106884925A (en) * | 2017-01-31 | 2017-06-23 | 东南大学 | A kind of rack driving pattern dish MR damper |
| CN108999896A (en) * | 2018-10-18 | 2018-12-14 | 徐州工程学院 | A kind of magnetorheological fluid accident brake |
| CN109210128A (en) * | 2018-04-26 | 2019-01-15 | 清华大学 | Rack pinion disc type MR fluid shock absorber |
| CN109667872A (en) * | 2018-12-26 | 2019-04-23 | 同济大学 | Quicksand type rotates fluid linking damper |
-
2022
- 2022-02-28 CN CN202210187263.2A patent/CN114658787A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011081961A1 (en) * | 2011-09-01 | 2013-03-07 | Robert Bosch Gmbh | Device i.e. hydraulic torsional vibration damper, for attenuating oscillation of drive train of combustion engine of motor car, has adjustment unit variably adjusting damping ratio according to evaluation of operating mode of engine |
| KR20140069824A (en) * | 2012-11-30 | 2014-06-10 | 조은혜 | Vibration generator |
| CN104499597A (en) * | 2014-12-31 | 2015-04-08 | 长安大学 | Viscous damper input displacement rate increasing device |
| CN104963984A (en) * | 2015-05-19 | 2015-10-07 | 合肥工业大学 | Two-dimensional, integrated and semi-automatic controllable vibration damper in longitudinal and vertical directions |
| CN204827827U (en) * | 2015-08-05 | 2015-12-02 | 芜湖职业技术学院 | Car magneto rheological damper energy conversion device |
| CN105626755A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Small rotary type magneto-rheological fluid damper used for reproducing passive force sense |
| CN106884925A (en) * | 2017-01-31 | 2017-06-23 | 东南大学 | A kind of rack driving pattern dish MR damper |
| CN109210128A (en) * | 2018-04-26 | 2019-01-15 | 清华大学 | Rack pinion disc type MR fluid shock absorber |
| CN108999896A (en) * | 2018-10-18 | 2018-12-14 | 徐州工程学院 | A kind of magnetorheological fluid accident brake |
| CN109667872A (en) * | 2018-12-26 | 2019-04-23 | 同济大学 | Quicksand type rotates fluid linking damper |
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