CN102537192A - Rotary damper with magnetorheological elastomer - Google Patents
Rotary damper with magnetorheological elastomer Download PDFInfo
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- CN102537192A CN102537192A CN2012100433352A CN201210043335A CN102537192A CN 102537192 A CN102537192 A CN 102537192A CN 2012100433352 A CN2012100433352 A CN 2012100433352A CN 201210043335 A CN201210043335 A CN 201210043335A CN 102537192 A CN102537192 A CN 102537192A
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- end cap
- elastic body
- rotating shaft
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Abstract
The invention discloses a rotary damper with a magnetorheological elastomer, which comprises a cylindrical stator, a U-shaped rotor, conical damping rollers and a rotating shaft. Two ends of the stator are respectively provided with end caps, a bearing is mounted in a central hole of one end cap of the stator, and the magnetorheological elastomer is fixed to the inner surface of the other end cap of the stator. An excitation coil is wound on the U-shaped rotor, the middles of two end faces of the U-shaped rotor are respectively provided with a semi-conical groove, the axis line of each semi-conical groove is positioned on the diameter of the stator, the diameter of each semi-conical groove is larger than that of each damping roller, and the damping rollers are mounted in the semi-conical grooves. One end of the rotating shaft is fixed to the bottom of the U-shaped rotor, and the other end of the rotating shaft extends out of the stator through the bearing on one end cap of the stator.
Description
Technical field
The invention belongs to a kind of damper, be specifically related to a kind of magnetic rheology elastic body rotary type damper.
Background technique
Existing revolving type magnetic rheologic damper is that rotor is placed in the clutch release slave cylinder; In clutch release slave cylinder, also be full of magnetic flow liquid; Adjust the damping force of its output through the viscosity that changes magnetic flow liquid in the clutch release slave cylinder; Magnetic flow liquid in clutch release slave cylinder is taken out of outside the clutch release slave cylinder with rotatingshaft; Normally between clutch release slave cylinder and rotatingshaft, adopt seal arrangement to solve the motive sealing problem of rotatingshaft, like one Chinese patent application number be: 200910251079.4 " a kind of screw rod type magnetorheological rotary damper " and one Chinese patent application number are: the high performance, multiple plates, revolving type magnetic rheologic damper of 200510040890.X; Because of magnetic flow liquid is the amalgam that in mineral oil, is added with the attritive powder of multiple composition; Therefore, it is carried out very difficulty of motive sealing, in case the leakage of magnetic flow liquid takes place; Light then make the decreased performance of revolving type magnetic rheologic damper; Heavy then make revolving type magnetic rheologic damper total failure, therefore, the motive sealing problem of magnetic flow liquid has become industry and has improved the MR damper major obstacle in working life.
Summary of the invention
In the deficiency aspect the rotatingshaft motive sealing, the present invention proposes brand-new revolving type magnetic rheologic damper, that is: a kind of magnetic rheology elastic body rotary type damper to existing revolving type magnetic rheologic damper.
Technological scheme of the present invention is following: a kind of magnetic rheology elastic body rotary type damper, and it comprises: stator, rotor, damping roller and rotating shaft; Stator is a cylindrical shape, all is provided with end cap at the stator two ends, in the center hole of stator one end end cap, bearing is installed, and has fixed one deck magnetic rheology elastic body at the internal surface of stator the other end end cap; Rotor is a U-shaped; On the U-shaped rotor, be wound with field coil; The groove of a half cone-shaped is all arranged at the middle part of the end face of U-shaped two ends of rotor, and the shaft axis of half cone-shaped groove is on the diameter of stator, and the diameter of half cone-shaped groove is greater than the diameter of damping roller; The damping roller is conical, in the half cone-shaped groove that the damping roller is installed in; One end of rotating shaft and the bottom of U-shaped rotor are fixed, and the other end of rotating shaft stretches out in stator through the bearing on the stator one end end cap; Rotor is installed in the stator; Gap between U-shaped two ends of rotor end face and the stator the other end end cap internal surface is greater than the thickness of magnetic rheology elastic body on the stator the other end end cap internal surface, and the gap on the U-shaped two ends of rotor end face between damping roller and the stator the other end end cap internal surface is less than the thickness of magnetic rheology elastic body on the stator the other end end cap internal surface; Rotating shaft has central through bore, and the lighting outlet of rotor excitation coil leads to outside the clutch release slave cylinder through the center hole of rotating shaft; Stator the other end end cap, rotor and damping roller constitute by permeability magnetic material, and rotating shaft is made up of non-magnet_conductible material.
Function of the present invention is achieved in that owing to the thickness of the gap between U-shaped two ends of rotor end face and the stator the other end end cap internal surface greater than magnetic rheology elastic body on the stator the other end end cap internal surface; Gap on the U-shaped two ends of rotor end face between damping roller and the stator the other end end cap internal surface is less than the thickness of magnetic rheology elastic body on the stator the other end end cap internal surface; So; When rotating shaft drive rotor rotates in stator; Magnetic rheology elastic body on the stator the other end end cap internal surface will be flattened by the damping roller on the U-shaped two ends of rotor face, will receive certain damping due to rotation power thereby rotating shaft is driven when rotor rotates in stator; When field coil does not have electric current to pass through on rotor; There is not the magnetic line of force to pass through the magnetic rheology elastic body on the stator the other end end cap internal surface; Therefore; The elasticity of the magnetic rheology elastic body on the stator the other end end cap internal surface is less; On the rotor on the damping roller roll extrusion stator the other end end cap internal surface magnetic rheology elastic body will receive less pressure, damping due to rotation power suffered when making rotating shaft drive rotor in stator, rotate is less, and the magnetic rheology elastic body on the stator the other end end cap internal surface returns to normal after by the flattening of damping roller immediately; After field coil on the rotor feeds electric current; Rotor will generate an electromagnetic field; Because of stator the other end end cap, rotor and damping roller constitute by permeability magnetic material; So the magnetic line of force that the rotor electromagnetic field produces can form closed magnetic circuit through the end face of two ends of rotor, the damping roller on the two ends of rotor end face, magnetic rheology elastic body and the stator the other end end cap on the stator the other end end cap internal surface; Make the ferromagnetic particle in the magnetic rheology elastic body between end face, the damping roller on the two ends of rotor end face and the stator the other end end cap internal surface that is in two ends of rotor form chain or column aggregated structure and make its elasticity higher at magnetic direction; When rotating shaft drive rotor rotates in stator; The electromagnetic field that rotor produces will rotate in stator along with the rotation of rotor, and the magnetic rheology elastic body on the constantly inswept stator the other end end cap internal surface, makes the magnetic rheology elastic body quilt " curing " under the effect of the magnetic line of force of rotor on the stator the other end end cap internal surface; Therefore; When the damping roller on the two ends of rotor end face will receive bigger pressure when the magnetic rheology elastic body of " curings " on roll extrusion stator the other end end cap internal surface, damping due to rotation power suffered when rotating shaft drive rotor is rotated in stator is bigger, and the magnetic rheology elastic body on the stator the other end end cap internal surface by the damping roller roll extrusion on the two ends of rotor end face flat after; Owing to the influence of the electromagnetic field that receives the two ends of rotor end face is difficult to return to normal, have only after the two ends of rotor end face leaves this zone just can return to normal; If rotor continues rotation, the magnetic rheology elastic body that has then returned to normal on the stator the other end end cap internal surface will so be gone round and begun again by (electromagnetic field of the rotor that turns over) " curing " and by damping roller roll extrusion on the two ends of rotor end face once more.
Therefore; Get into the size of current in the field coil on the rotor through adjustment; Can adjust the generate an electromagnetic field size of intensity of rotor; Thereby change the elasticity size of the magnetic rheology elastic body on the electromagnetic field zone inner stator the other end end cap internal surface that is in the generation of two ends of rotor end face, make the damping due to rotation power of magnetic rheology elastic body rotary type damper obtain adjustment.
Compare with existing magnetorheological rotary damper, do not make its structure simpler because of the magnetic rheology elastic body rotary type damper need not seal magnetic flow liquid, the stability and the reliability of its work are greatly enhanced.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is that the A of Fig. 1 is to sectional view.
Fig. 3 is that the B of Fig. 1 is to sectional view.
Fig. 4 is that the C of Fig. 1 is to sectional view.
Dotted line among Fig. 5 is the schematic representation that field coil energising back electromagnetic field forms closed magnetic circuit on the rotor of the present invention.
Fig. 6 be on the rotor of the present invention during the rotor clockwise rotation of field coil energising back the C of Fig. 1 to sectional view.
Embodiment
Specify structure of the present invention below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4; This is a kind of concrete structure of the present invention; A kind of magnetic rheology elastic body rotary type damper, it comprises: the stator 1 that is made up of non-magnet_conductible material, the rotor 2 that is made up of permeability magnetic material, constituted damping roller 5 and 10, constituted rotating shaft 17 by non-magnet_conductible material by permeability magnetic material; Stator 1 is a cylindrical shape, all is provided with end cap 6 and 21 at stator 1 two ends, and bearing 18 is installed in the center hole of stator 1 one end end caps 21, has fixed one deck magnetic rheology elastic body 7 at the internal surface of stator 1 the other end end cap 6; Rotor 2 is a U-shaped; On rotor 2, be wound with field coil 3 and 13; The groove 11 and 22 that a half cone-shaped is all arranged at the middle part of the end face 24 of rotor 2 two ends 19 and 20 and 25, half cone- shaped groove 11 and 22 shaft axis are on the diameter of stator 1, and half cone- shaped groove 11 and 22 diameter are greater than the diameter of damping roller 5 and 10; Damping roller 5 and 10 is conical, in the half cone- shaped groove 11 and 22 that damping roller 5,10 is installed in through the axle 4 and 8 on it, axle 9 and 12; One end of rotating shaft 17 and the bottom of rotor 2 are fixed, and the other end of rotating shaft 17 stretches out in stator 1 through the bearing 18 on the stator 1 one end end caps 21; Rotor 2 is installed in the stator 1; Rotor 2 two ends 19 and 20 end faces 24 and 25 and stator 1 the other end end cap 6 internal surfaces between the gap greater than the thickness of magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces; On rotor 2 two ends 19 and 20 end faces 24 and 25 damping roller 5 and 10 and stator 1 the other end end cap 6 internal surfaces between the gap less than the thickness of magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces; Rotating shaft 17 has central through bore 16, on the rotor 2 field coil 3 and 13 lighting outlet 15 center hole 16 through rotating shaft 17 lead to stator 1 outer with control power supply 14 and be connected.
Combine accompanying drawing that a kind of magnetic rheology elastic body rotary type damper of the present invention is further described now: referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6; Because rotor 2 two ends 19 and 20 end faces 24 and 25 and stator 1 the other end end cap 6 internal surfaces between the gap greater than the thickness of magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces; On rotor 2 two ends 19 and 20 end faces 25 and 26 damping roller 5 and 10 and stator 1 the other end end cap 6 internal surfaces between the gap less than the thickness of magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces; So; When rotating shaft 17 drive rotors 2 turn clockwise in stator 1; Magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces will be flattened by the damping roller 5 on rotor 2 both ends of the surface 19 and 20 and 10 and (see Fig. 4 for details; Annotate: damping roller 10 is identical with the situation of damping roller 5), thereby being driven when rotor 2 rotates, rotating shaft 17 will receive certain damping due to rotation power in stator 1; At control power supply 14 not during output current; Field coil 3 and 13 does not have electric current to pass through on the rotor 2; Just there is not the magnetic line of force to pass through the magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces yet; Therefore, the elasticity of the magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces is less, on the rotor 2 on damping roller 5 and 10 roll extrusion stators, 1 the other end end cap, 6 internal surfaces magnetic rheology elastic body 7 will receive less pressure; Damping due to rotation power suffered when rotating shaft 17 drive rotors 2 are turned clockwise in stator 1 is less, and the magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces returns to normal after being flattened by damping roller 5 and 10 immediately; When controlling power supply 14 behind field coil 3 on the rotor 2 and 13 output currents; Rotor 2 will generate an electromagnetic field; Because of stator 1 the other end end cap 6, rotor 2 and damping roller 5 and 10 constitute by permeability magnetic material; So the magnetic line of force that rotor 2 electromagnetic fields produce can form closed magnetic circuit (seeing Fig. 5 for details) through the end face 24 and 25 of rotor 2 two ends 19 and 20, the damping roller 5 and 10 on the rotor 2 two ends end faces 24 and 25, magnetic rheology elastic body 7 and stator 1 the other end end cap 6 on stator 1 the other end end cap 6 internal surfaces; Make the end face 24 and 25 that is in rotor 2 two ends 19 and 20, the damping roller 5 on the rotor 2 two ends end faces 24 and 25 and 10 and stator 1 the other end end cap 6 internal surfaces between magnetic rheology elastic body 7 in ferromagnetic particle form chain or column aggregated structure and make its elasticity higher at magnetic direction; When rotating shaft 17 drive rotors 2 turn clockwise in stator 1; The electromagnetic field that rotor 2 produces will rotate in stator 1 along with the rotation of rotor 2; And the magnetic rheology elastic body 7 on constantly inswept stator 1 the other end end cap 6 internal surfaces; Make magnetic rheology elastic body 7 quilt " curing " under the effect of the magnetic line of force of rotor 1 on stator 1 the other end end cap 6 internal surfaces; Therefore; When the damping roller 5 on rotor 2 two ends end faces 24 and 25 and 10 will receive bigger pressure when the magnetic rheology elastic body 7 of " curings " on roll extrusion stator 1 the other end end cap 6 internal surfaces, damping due to rotation power suffered when rotating shaft 17 drive rotors 2 are turned clockwise in stator 1 is bigger, and the magnetic rheology elastic body 7 on stator 1 the other end end cap 6 internal surfaces by the damping roller 5 on two ends of rotor end face 24 and 25 and 10 roll extrusion flat after; Owing to the influence of the electromagnetic field that receives rotor 2 two ends end faces 24 and 25 is difficult to return to normal, have only after rotor 2 two ends end faces 24 and 25 leave this zone, just can return to normal (seeing 23 among Fig. 6 for details); If rotor 2 continues rotation; The magnetic rheology elastic body 7 that has then returned to normal on stator 1 the other end end cap 6 internal surfaces will so be gone round and begun again by (electromagnetic field of the rotor 2 that turns over) " curing " and by damping roller 5 and 10 roll extrusion on rotor 2 two ends end faces 24 and 25 once more.Situation when rotating shaft 17 drive rotors 2 are rotated counterclockwise motion in stator 1 is similar with it, repeats no more here.
Claims (3)
1. magnetic rheology elastic body rotary type damper; It comprises: stator, rotor, damping roller and rotating shaft; It is characterized in that: said stator is a cylindrical shape; All be provided with end cap at the stator two ends, in the center hole of stator one end end cap, bearing be installed, fixed one deck magnetic rheology elastic body at the internal surface of stator the other end end cap; Said rotor is a U-shaped, on the U-shaped rotor, is wound with field coil, and the groove of a half cone-shaped is all arranged at the middle part of the end face of U-shaped two ends of rotor, and the shaft axis of half cone-shaped groove is on the diameter of stator, and the diameter of half cone-shaped groove is greater than the diameter of damping roller; Said damping roller is conical, in the half cone-shaped groove that the damping roller is installed in; One end of said rotating shaft and the bottom of U-shaped rotor are fixed, and the other end of rotating shaft stretches out in stator through the bearing on the stator one end end cap; Said rotor is installed in the stator; Gap between U-shaped two ends of rotor end face and the stator the other end end cap internal surface is greater than the thickness of magnetic rheology elastic body on the stator the other end end cap internal surface, and the gap on the U-shaped two ends of rotor end face between damping roller and the stator the other end end cap internal surface is less than the thickness of magnetic rheology elastic body on the stator the other end end cap internal surface.
2. a kind of magnetic rheology elastic body rotary type damper as claimed in claim 1 is characterized in that: the end cap of the said stator the other end, rotor and damping roller constitute by permeability magnetic material.
3. a kind of magnetic rheology elastic body rotary type damper as claimed in claim 1, it is characterized in that: said rotating shaft has central through bore, and the lighting outlet of rotor excitation coil leads to outside the clutch release slave cylinder through the center hole of rotating shaft, and said rotating shaft is made up of non-magnet_conductible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210043335 CN102537192B (en) | 2012-02-24 | 2012-02-24 | Rotary damper with magnetorheological elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210043335 CN102537192B (en) | 2012-02-24 | 2012-02-24 | Rotary damper with magnetorheological elastomer |
Publications (2)
| Publication Number | Publication Date |
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| CN102537192A true CN102537192A (en) | 2012-07-04 |
| CN102537192B CN102537192B (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210043335 Expired - Fee Related CN102537192B (en) | 2012-02-24 | 2012-02-24 | Rotary damper with magnetorheological elastomer |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051025A (en) * | 2016-07-13 | 2016-10-26 | 上海工程技术大学 | Disc type damper based on magneto-rheological elastomer and magneto-rheological fluid |
| CN107725641A (en) * | 2016-08-12 | 2018-02-23 | 巨大机械工业股份有限公司 | Magnetic flow liquid rotary drag devices |
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| US3696891A (en) * | 1970-10-29 | 1972-10-10 | Hartwell Corp The | Energy absorbing device |
| US4583621A (en) * | 1983-04-08 | 1986-04-22 | Industrie Pirelli S.P.A. | Differentiated action oscillation damping device |
| US6394239B1 (en) * | 1997-10-29 | 2002-05-28 | Lord Corporation | Controllable medium device and apparatus utilizing same |
| CN1664402A (en) * | 2005-04-01 | 2005-09-07 | 中国科学技术大学 | Vibration damper with controllable stiffness and damping |
| CN101818781A (en) * | 2009-12-29 | 2010-09-01 | 重庆仪表材料研究所 | Built-in bar-type magneto-rheological damper |
| US20100276855A1 (en) * | 2009-04-29 | 2010-11-04 | Honeywell International Inc. | Isoelastic magneto-rheological elastomer isolator |
| CN102297231A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Rotary magneto-rheological damper |
| CN202441802U (en) * | 2012-02-24 | 2012-09-19 | 谭晓婧 | Rotary damper for magnetorheological elastomer |
-
2012
- 2012-02-24 CN CN 201210043335 patent/CN102537192B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3696891A (en) * | 1970-10-29 | 1972-10-10 | Hartwell Corp The | Energy absorbing device |
| US4583621A (en) * | 1983-04-08 | 1986-04-22 | Industrie Pirelli S.P.A. | Differentiated action oscillation damping device |
| US6394239B1 (en) * | 1997-10-29 | 2002-05-28 | Lord Corporation | Controllable medium device and apparatus utilizing same |
| CN1664402A (en) * | 2005-04-01 | 2005-09-07 | 中国科学技术大学 | Vibration damper with controllable stiffness and damping |
| US20100276855A1 (en) * | 2009-04-29 | 2010-11-04 | Honeywell International Inc. | Isoelastic magneto-rheological elastomer isolator |
| CN101818781A (en) * | 2009-12-29 | 2010-09-01 | 重庆仪表材料研究所 | Built-in bar-type magneto-rheological damper |
| CN102297231A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Rotary magneto-rheological damper |
| CN202441802U (en) * | 2012-02-24 | 2012-09-19 | 谭晓婧 | Rotary damper for magnetorheological elastomer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051025A (en) * | 2016-07-13 | 2016-10-26 | 上海工程技术大学 | Disc type damper based on magneto-rheological elastomer and magneto-rheological fluid |
| CN106051025B (en) * | 2016-07-13 | 2017-12-29 | 上海工程技术大学 | A kind of disc type damper based on magnetic rheology elastic body and magnetic flow liquid |
| CN107725641A (en) * | 2016-08-12 | 2018-02-23 | 巨大机械工业股份有限公司 | Magnetic flow liquid rotary drag devices |
| CN107725641B (en) * | 2016-08-12 | 2019-08-02 | 巨大机械工业股份有限公司 | Magnetorheological fluid rotary drag devices |
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| CN102537192B (en) | 2013-10-02 |
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Granted publication date: 20131002 Termination date: 20140224 |