CN108691944B - Based on the asymmetric MR damper for squeezing enhancement effect - Google Patents
Based on the asymmetric MR damper for squeezing enhancement effect Download PDFInfo
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- CN108691944B CN108691944B CN201810625721.XA CN201810625721A CN108691944B CN 108691944 B CN108691944 B CN 108691944B CN 201810625721 A CN201810625721 A CN 201810625721A CN 108691944 B CN108691944 B CN 108691944B
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- piston
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- cylinder barrel
- mobile piston
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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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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of based on the asymmetric MR damper for squeezing enhancement effect, rotation piston, mobile piston, cylinder barrel including ball screw assembly, and lead screw pair nut synchronous rotary etc.；There is the worm drive component of rolling element between the rotation piston and mobile piston formation, the rotary motion for rotating piston can be converted to the linear motion of mobile piston.When the screw rod linear motion of the ball screw assembly, the nut rotary motion of ball screw assembly, cause the linear motion of mobile piston, the extruding to magnetorheological fluid is increased or reduced in turn, the pressure as suffered by magnetorheological fluid can enhance its magnetic rheology effect when increasing, therefore when identical speed and electric current input, since the difference of the direction of motion keeps pressure suffered by magnetorheological fluid different, cause compression different with recuperability, generate asymmetric force, advantageously reduce the sensor cost for needing the control system (such as automobile suspension system) of asymmetric force, and it advantageously reduces energy consumption and improves the reliability of system.
Description
Technical field
The present invention relates to magneto-rheological vibration damping fields, and in particular to a kind of based on the asymmetric magnetic current variable resistance for squeezing enhancement effect
Buddhist nun's device.
Background technique
Magnetorheological fluid is a kind of intelligent liquid, can be turned between liquid and semisolid realizing in the time of Millisecond
It changes.It is the MR damper of medium commonly used to realize the controllable of damping using magnetorheological fluid, MR damper has structure
Simply, fast response time and than active control less energy-consuming the advantages that.In some application fields, need damper output asymmetric
Power, i.e., under identical excitation, compression is different from the damping force of stroke is restored, corresponding generally for MR damper is exported
Damping force needs the signal according to different sensors, exports control signal by controller and encourages to adjust MR damper in real time
The size of magnetoelectricity stream.But it adjusts need more sensor in real time, also have higher requirement to controller, not only increase design
With the cost in use process, while the complexity of vibration insulating system is increased, reduces the reliability of control system.Therefore this hair
It is bright that a kind of asymmetric MR damper of the damping that can be used for grading control is provided, advantageously reduce the control for needing asymmetric force
The sensor cost of system (such as automobile suspension system), and advantageously reduce energy consumption and improve the reliability of system.
Summary of the invention
In view of this, the present invention provides a kind of asymmetric MR damper based on extruding enhancement effect, can reduce
Sensor cost in the systems such as automobile suspension system, seat shock isolation system improves system reliability, improves the comfort of system.
Asymmetric MR damper based on extruding enhancement effect of the invention, including cylinder barrel, with the side of axial restraint
The rotation piston of cylinder barrel and the ball screw assembly, with rotation piston cooperation, the nut and rotation piston of ball screw assembly, are placed in formula
It is connected and rotates synchronously；Further include the mobile piston coaxial with cylinder barrel, has rolling between the rotation piston and mobile piston formation
The worm drive component of kinetoplast can convert the rotary motion for rotating piston to the linear motion of mobile piston；In the cylinder barrel
It is magnetorheological sap cavity between wall, the outer circle for rotating piston and the front end face of mobile piston, the magnetorheological sap cavity is variable volume
Chamber and it is intracavitary be magnetorheological fluid.
Further, the inner wall of cylinder is axially disposed guide groove, and the rear end outer circle of the mobile piston is provided with item
Shape protrusion makes outer circle and the inner wall of cylinder axial sliding fit with circumferentially fixed of mobile piston；Before the mobile piston
End inner circle and outer circle are provided with for the sealing ring to magnetorheological sap cavity along axial seal.
Further, thread jacket is provided with forward and backward end cap, the inside of the rear end cap to the front and back ends of the cylinder barrel respectively
Intermediate protrusion axially forward forms support sleeve, and the rear end of the ball-screw nut and the front end of rotation piston pass through axis respectively
It holds and is installed on support sleeve front-end and back-end lid inner wall；There is sealing between the cylinder barrel front end surface and drive end bearing bracket.
Further, the front end of the cylinder barrel is provided with magnet exciting coil.
The beneficial effects of the present invention are: disclosed by the invention a kind of based on the asymmetric magnetorheological damping for squeezing enhancement effect
Device.The pressure as suffered by magnetorheological fluid can enhance its magnetic rheology effect when increasing, i.e., magnetorheological fluid squeezes enhancement effect, when passing through
After the methods of space compression increases pressure suffered by magnetorheological fluid, magnetic rheology effect be will increase, in identical acceleration excitation and excitation
When electric current, the shear stress of magnetorheological fluid increases, and damper output damping force becomes larger, therefore damper is in recovery and compression process
In, the pressure as suffered by magnetorheological fluid is different, and recovery can be made different with the force value generated in compression process, it is non-to show damping force
Symmetry characteristic.Meanwhile magnetorheological fluid works in shear mode, the adjustable model for advantageously reducing null field damping force, improving damping force
It encloses.In conjunction with the above characteristic, it can not only reduce and subtract/demand of the vibrating isolation system to sensor, reduce cost and improve reliability, together
When be conducive to improve subtract/vibration isolating effect.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram in the present invention；
Specific embodiment
In the present embodiment based on squeeze enhancement effect asymmetric MR damper, including cylinder barrel 1, with axial restraint
Mode in be placed on cylinder barrel rotation piston 2 and with rotation piston cooperation ball screw assembly, the nut 3 of ball screw assembly, with turn
Piston 2 is connected and rotates synchronously；It further include the mobile piston 4 coaxial with cylinder barrel, the rotation piston 2 and mobile 4 shape of piston
There is the worm drive component of rolling element between, the rotary motion for rotating piston can be converted to the linear motion of mobile piston；
It is magnetorheological sap cavity 5 between 1 inner wall of cylinder barrel, the outer circle for rotating piston 2 and the front end face of mobile piston 4, it is described magnetorheological
Sap cavity be variable volume chamber and it is intracavitary be magnetorheological fluid.
1 inner wall of cylinder barrel is axially disposed guide groove, and it is prominent that the rear end outer circle of the mobile piston 4 is provided with bar shaped
It rises, makes outer circle and the inner wall of cylinder axial sliding fit with circumferentially fixed of mobile piston；In the front end of the mobile piston
Round and outer circle is provided with for the sealing ring to magnetorheological sap cavity along axial seal.
Thread jacket is provided with drive end bearing bracket 6 and rear end cap 7 to the front and back ends of the cylinder barrel 1 respectively, the rear end cap 7 it is interior
Protrusion forms support sleeve axially forward among side, and the rear end of the ball-screw nut 3 and the front end of rotation piston 2 lead to respectively
It crosses bearing and is installed on support sleeve front-end and back-end lid inner wall；There is sealing between 1 front end surface of cylinder barrel and drive end bearing bracket 6.It is described
The front end of cylinder barrel 1 is provided with magnet exciting coil 8.
The rotary motion of the Axially moving belt turn piston 2 of screw rod 9, when a current is applied, the rotation fortune of rotation piston 2
The magnetorheological fluid ferromagnetic particle arranged in dynamic meeting shearing work region with magnetic induction line, and then export controllable damping force；It lives when mobile
When plug 6 moves extruding magnetorheological fluid to the right, pressure becomes larger in magnetorheological fluid, and ferromagnetic particle ratio in working region increases,
Shearing force is increased, and then increases the damping force exported at lead screw；When being moved to the left, then reduce the intracorporal pressure of liquid,
Ferromagnetic particle accounting is gradually reduced in working region, reduces damping output, thus damping when being formed in different motion direction
Asymmetric output characteristics；Under identical speed and electric current, damper is set to compress and restore on direction because squeezing enhancement effect
It is exported with different dampings, shows asymmetric property；Sensor cost in control system can be reduced using the characteristic, is mentioned
High system reliability.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (4)
1. it is a kind of based on the asymmetric MR damper for squeezing enhancement effect, including cylinder barrel, the inner sleeve in a manner of axial restraint
In the ball screw assembly, for rotating piston and cooperate with rotation piston of cylinder barrel, the nut and rotation piston of ball screw assembly, are connected simultaneously
It rotates synchronously, it is characterised in that: further include the mobile piston coaxial with cylinder barrel, between the rotation piston and mobile piston formation
There is the worm drive component of rolling element, the rotary motion for rotating piston can be converted to the linear motion of mobile piston；The cylinder
It is magnetorheological sap cavity between cylinder inner wall, the outer circle for rotating piston and the front end face of mobile piston, the magnetorheological sap cavity is volume
Variable chamber and it is intracavitary be magnetorheological fluid.
2. according to claim 1 based on the asymmetric MR damper for squeezing enhancement effect, it is characterised in that: described
Inner wall of cylinder is axially disposed guide groove, and the rear end outer circle of the mobile piston is provided with article shape protrusion, makes mobile piston
The axial sliding fit with circumferentially fixed of outer circle and inner wall of cylinder；The front end inner circle and outer circle of the mobile piston are provided with
For the sealing ring to magnetorheological sap cavity along axial seal.
3. according to claim 2 based on the asymmetric MR damper for squeezing enhancement effect, it is characterised in that: described
Thread jacket is provided with forward and backward end cap to the front and back ends of cylinder barrel respectively, protrusion shape axially forward among the inside of the rear end cap
At support sleeve, the front end of the rear end of the ball-screw nut and rotation piston pass through respectively bearing be installed on support sleeve front end and
Rear end cap inner wall；There is sealing between the cylinder barrel front end surface and drive end bearing bracket.
4. according to claim 3 based on the asymmetric MR damper for squeezing enhancement effect, it is characterised in that: described
The front end of cylinder barrel is provided with magnet exciting coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625721.XA CN108691944B (en) | 2018-06-18 | 2018-06-18 | Based on the asymmetric MR damper for squeezing enhancement effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625721.XA CN108691944B (en) | 2018-06-18 | 2018-06-18 | Based on the asymmetric MR damper for squeezing enhancement effect |
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| CN108691944A CN108691944A (en) | 2018-10-23 |
| CN108691944B true CN108691944B (en) | 2019-07-26 |
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| CN201810625721.XA Active CN108691944B (en) | 2018-06-18 | 2018-06-18 | Based on the asymmetric MR damper for squeezing enhancement effect |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894495B (en) * | 2019-01-11 | 2020-12-22 | 广东工业大学 | Extruder anomaly detection method and system based on energy consumption data and Bayesian network |
| CN114321256A (en) * | 2020-09-29 | 2022-04-12 | 汪丽 | Asymmetric damping force magneto-rheological shock absorber piston |
| CN115978128A (en) * | 2022-12-07 | 2023-04-18 | 重庆大学 | Commercial vehicle seat tuned mass damper based on magnetorheological composite material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3644447A1 (en) * | 1986-12-24 | 1988-07-07 | Bosch Gmbh Robert | DEVICE FOR DAMPING MOTION PROCESSES |
| CN102937158A (en) * | 2012-11-12 | 2013-02-20 | 富奥汽车零部件股份有限公司 | Magneto-rheological fluid damper for automobile |
| CN103352956A (en) * | 2013-06-19 | 2013-10-16 | 重庆大学 | Magneto-rheological damper with asymmetrical controllable damping characteristic |
| CN103615490A (en) * | 2012-11-05 | 2014-03-05 | 浙江科技学院 | Energy feedback self-control magneto-rheological shock absorber |
| CN105932827A (en) * | 2016-07-04 | 2016-09-07 | 吉林大学 | Electromagnetic type vibration energy recovery device |
-
2018
- 2018-06-18 CN CN201810625721.XA patent/CN108691944B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3644447A1 (en) * | 1986-12-24 | 1988-07-07 | Bosch Gmbh Robert | DEVICE FOR DAMPING MOTION PROCESSES |
| CN103615490A (en) * | 2012-11-05 | 2014-03-05 | 浙江科技学院 | Energy feedback self-control magneto-rheological shock absorber |
| CN102937158A (en) * | 2012-11-12 | 2013-02-20 | 富奥汽车零部件股份有限公司 | Magneto-rheological fluid damper for automobile |
| CN103352956A (en) * | 2013-06-19 | 2013-10-16 | 重庆大学 | Magneto-rheological damper with asymmetrical controllable damping characteristic |
| CN105932827A (en) * | 2016-07-04 | 2016-09-07 | 吉林大学 | Electromagnetic type vibration energy recovery device |
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| CN108691944A (en) | 2018-10-23 |
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