CN102562898B - Rotary damper with magnetorheological elastomers - Google Patents
Rotary damper with magnetorheological elastomers Download PDFInfo
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- CN102562898B CN102562898B CN 201210043876 CN201210043876A CN102562898B CN 102562898 B CN102562898 B CN 102562898B CN 201210043876 CN201210043876 CN 201210043876 CN 201210043876 A CN201210043876 A CN 201210043876A CN 102562898 B CN102562898 B CN 102562898B
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Abstract
The invention discloses a rotary damper with magnetorheological elastomers, which comprises a cylindrical stator, an H-shaped rotor, conical damping wheels and two rotary shafts. End caps are arranged at two ends of the stator respectively, bearings are mounted in center holes of the end caps, and a magnetorheological elastomer layer is fixed on the inner surface of each of the end caps of the stator. An excitation coil is wound on the H-shaped rotor, four semi-conical grooves are respectively arranged in the middles of four branch end faces of the H-shaped rotor, axes of the semi-conical grooves are located on the diameter of the stator, and the diameter of each of the semi-conical grooves is larger than that of each damping wheel. The damping wheels are mounted in the semi-conical grooves respectively. One ends of the two rotary shafts are fixed with two ends of H-shaped rotor respectively, and the other ends of the two rotary shafts respectively extend out of the stator through thebearings on two end caps 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 by 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 adopt seal arrangement to solve the motive sealing problem of rotatingshaft between clutch release slave cylinder and rotatingshaft, as Chinese patent application number be: 200910251079.4 " a kind of screw rod type magnetorheological rotary damper " and Chinese patent application number are: the high performance, multiple plates, revolving type magnetic rheologic damper of 200510040890.X; Be the mixture that in mineral oil, is added with the attritive powder of multiple composition because of magnetic flow liquid, therefore, it is very difficult that it is carried out motive sealing, in case the leakage of magnetic flow liquid takes place, light then the performance of revolving type magnetic rheologic damper is descended, 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 at existing revolving type magnetic rheologic damper.
Technological scheme of the present invention is as follows: a kind of magnetic rheology elastic body rotary type damper, and it comprises: stator, rotor, damping roller and two rotating shafts; Stator is cylindrical shape, all be provided with end cap at the stator two ends, in the center hole of end cap, bearing is installed, the internal surface of stator two ends end cap has all been fixed one deck magnetic rheology elastic body, rotor is I-shaped, be wound with field coil at I-shaped rotor, the groove that a half cone-shaped is arranged at the middle part of four branch end faces of I-shaped rotor, the shaft axis of half cone-shaped groove is on the diameter of stator, 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 two rotating shafts and the two ends of I-shaped rotor are fixed, the other end of two rotating shafts stretches out in stator by the bearing on the end cap of stator two ends respectively, rotor is installed in the stator, width between four branch end faces of I-shaped rotor is less than the spacing between the magnetic rheology elastic body on the end cap internal surface of stator two ends, width on four branch end faces of I-shaped rotor between the damping roller is greater than the spacing between the magnetic rheology elastic body on the end cap internal surface of stator two ends, and the width on four branch end faces of I-shaped rotor between the damping roller is less than the spacing between the end cap of stator two ends; The end cap at stator two ends, rotor and damping roller constitute by permeability magnetic material, and wherein rotating shaft of two rotating shafts has central through bore, and the lighting outlet of rotor excitation coil leads to outside the stator by the center hole of rotating shaft, and two rotating shafts are made of non-magnet_conductible material.
Function of the present invention be achieved in that since four branch end faces of I-shaped rotor between width less than the spacing between the magnetic rheology elastic body on the end cap internal surface of stator two ends, width on four branch end faces of I-shaped rotor between the damping roller is greater than the spacing between the magnetic rheology elastic body on the end cap internal surface of stator two ends, width on four branch end faces of I-shaped rotor between the damping roller is less than the spacing between the end cap of stator two ends, so, when rotating shaft drive rotor rotates in stator, magnetic rheology elastic body on the end cap internal surface of stator two ends will be flattened by the damping roller on four branch end faces of I-shaped rotor, will be subjected to 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 magnetic rheology elastic body on the end cap internal surface of stator two ends, therefore, the elasticity of the magnetic rheology elastic body on the end cap internal surface of stator two ends is less, on the rotor on the end cap internal surface of damping roller roll extrusion stator two ends magnetic rheology elastic body will be subjected to less pressure, damping due to rotation power suffered when rotating shaft drive rotor is rotated in stator is less, and the magnetic rheology elastic body on the end cap internal surface of stator two ends returns to normal after damped roller flattens immediately; After field coil on the rotor feeds electric current, rotor will generate an electromagnetic field, because of stator two ends end cap, rotor and damping roller constitute by permeability magnetic material, so the magnetic line of force that the rotor electromagnetic field produces can be by the end face of four branch ends of rotor, damping roller on four branch ends of rotor end face, magnetic rheology elastic body on the end cap internal surface of stator two ends and stator two ends end cap form closed magnetic circuit, make the end face that is in four branch ends of rotor, ferromagnetic particle in damping roller on four branch ends of rotor end face and the magnetic rheology elastic body between the end cap internal surface of stator two ends forms chain or column aggregated structure and makes its elasticity higher and " curing " 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 end cap internal surface of inswept stator two ends constantly, make the magnetic rheology elastic body quilt " curing " under the effect of the magnetic line of force of rotor on the end cap internal surface of stator two ends, therefore, when the damping roller on four branch ends of rotor end face will be subjected to bigger pressure when the magnetic rheology elastic body of " curing " on the end cap internal surface of roll extrusion stator two ends, damping due to rotation power suffered when rotating shaft drive rotor is rotated in stator is bigger, and after the magnetic rheology elastic body on the end cap internal surface of stator two ends is flat by the damping roller roll extrusion on four branch ends of rotor end face, owing to the influence of the electromagnetic field that is subjected to four branch ends of rotor end face is difficult to return to normal, have only after four branch ends of rotor end face leaves this zone just can return to normal; If rotor continues rotation, then the magnetic rheology elastic body that has returned to normal on the stator two ends 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 four branch ends of rotor end face again.
Therefore, enter the size of current in the field coil on the rotor by 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 inner stator two ends, the electromagnetic field zone end cap internal surface that is in the generation of four branch ends of rotor end face, make the damping due to rotation power of magnetic rheology elastic body rotary type damper obtain adjusting.
Compare with existing magnetorheological rotary damper, do not make its structure simpler because the magnetic rheology elastic body rotary type damper does not need magnetic flow liquid sealed, 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 B of Fig. 1 is to sectional view.
Fig. 3 is that the A of Fig. 1 is to sectional view.
Fig. 4 is that the D of Fig. 1 is to sectional view.
Fig. 5 is that the C of Fig. 1 is to sectional view.
Dotted line among Fig. 6 is the schematic representation that field coil energising back electromagnetic field forms closed magnetic circuit on the rotor of the present invention.
Fig. 7 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.
Fig. 8 be on the invention rotor during rotor clockwise rotation of field coil energising back the D of Fig. 1 to sectional view.
Embodiment
Describe structure of the present invention in detail below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, 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 5 that is made of non-magnet_conductible material, the rotor 20 that is made of permeability magnetic material, the damping roller 2,9,16 and 24 that is made of permeability magnetic material, the rotating shaft 14 and 31 that is made of non-magnet_conductible material; Stator 5 is cylindrical shape, all be provided with end cap 11 and 26 at stator 5 two ends, bearing 13 and 28 are installed in the center hole of end cap 11 and 26, stator 5 end caps 11 and 26 internal surface have all been fixed one deck magnetic rheology elastic body 10 and 25, rotor 20 is I-shaped, be wound with field coil 4 at I- shaped rotor 20,6,19 and 21, four branch end faces 45 at I-shaped rotor 20,46, there is the groove 41 of a half cone-shaped at 47 and 48 middle part, 42,43 and 44, half cone- shaped groove 41,42,44 and 43 shaft axis is on the diameter of stator 1, half cone- shaped groove 41,42,43 and 44 diameter is greater than damping roller 2,9,16 and 24 diameter, damping roller 2,9,16 and 24 is conical, damping roller 2,9,16 and 24 by the axle 1 and 33 on it, 8 and 12,15 and 17,23 and the 27 half cone-shaped grooves 41 that are installed in, 42, in 44 and 43, rotating shaft 14 and an end of 31 and the two ends of I-shaped rotor 20 are fixed, rotating shaft 14 and 31 the other end stretch out in stator 5 by the bearing 13 and 28 on stator 5 two ends end caps 11 and 26 respectively, rotor 20 is installed in the stator 5, four branch end faces 45 of I- shaped rotor 20 and 47, width between 46 and 48 (seeing the W4 among Fig. 4 and Fig. 5 for details) is less than the spacing (seeing the W3 among Fig. 4 and Fig. 5 for details) between the magnetic rheology elastic body 10 and 25 on stator 5 two ends end caps 11 and 26 internal surfaces, four branch end faces 45 of I- shaped rotor 20 and 47, damping roller 2 and 24 on 46 and 48, width between 9 and 16 (seeing the W2 among Fig. 4 and Fig. 5 for details) is greater than the spacing (seeing the W3 among Fig. 4 and Fig. 5 for details) between the magnetic rheology elastic body 10 and 25 on stator 5 two ends end caps 11 and 26 internal surfaces, four branch end faces 45 of I- shaped rotor 20 and 47, damping roller 2 and 24 on 46 and 48, width between 9 and 16 (seeing the W2 among Fig. 4 and Fig. 5 for details) is less than the spacing (seeing the W1 among Fig. 4 and Fig. 5 for details) between stator 5 two ends end caps 11 and 26; Rotating shaft 31 has central through bore 32, field coil 4,6 on the rotor 20,19 with 21 lighting outlet 30 center hole 32 by rotating shaft 31 lead to stator 5 outer with control power supply 29 and be connected.
By reference to the accompanying drawings 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, Fig. 6, Fig. 7 and Fig. 8, at control power supply 29 field coil 4 on the rotor 20 not, 6, during 19 and 21 output currents, there is not the magnetic line of force to pass through magnetic rheology elastic body 10 and 25 on stator 5 two ends end caps 11 and 26 internal surfaces, therefore, magnetic rheology elastic body 10 on stator 5 two ends end caps 11 and 26 internal surfaces and 25 elasticity are less, damping roller 2 and 24 on the rotor 20, on 9 and 16 roll extrusion stators, 5 two ends end caps 11 and 26 internal surfaces magnetic rheology elastic body 10 and 25 will be subjected to less pressure, damping due to rotation power suffered when rotating shaft 14 drive rotors 20 are turned clockwise in stator 5 is less, and the magnetic rheology elastic body 10 on stator 5 two ends end caps 11 and 26 internal surfaces and 25 is in damped roller 2 and 24, return to normal immediately after 9 and 16 flattenings; When control power supply 29 field coil 4 on the rotor 20,6, behind 19 and 21 output currents, rotor 20 will generate an electromagnetic field, because of stator 5 two ends end caps 11 and 26, rotor 20 and damping roller 2 and 24,9 and 16 constitute by permeability magnetic material, so the magnetic line of force that rotor 20 electromagnetic fields produce can be by four branch ends 3 and 7 of rotor 20,18 and 22 end face 45 and 47,46 and 48, four branch end end faces 45 and 47 of rotor 20, damping roller 2 and 24 on 46 and 48,9 and 16, magnetic rheology elastic body 10 on stator 5 two ends end caps 11 and 26 internal surfaces and 25 and stator 5 two ends end caps 11 and 26 form closed magnetic circuits and (see for details: Fig. 6), make four the branch ends 3 and 7 that are in rotor 20,18 and 22 end face 45 and 47,46 and 48, four branch end end faces 45 and 47 of rotor 20, damping roller 2 and 24 on 46 and 48,9 and 16 and stator 5 two ends end caps 11 and 26 internal surfaces between magnetic rheology elastic body 10 and 25 in ferromagnetic particle form chain or column aggregated structure and make its elasticity higher and " curing " at magnetic direction, therefore, four branch end end faces 45 and 47 when rotor 20, damping roller 2 and 24 on 46 and 48,9 and 16 on roll extrusion stator 5 two ends end caps 11 and 26 internal surfaces by the magnetic rheology elastic body 10 of " curing " and will be subjected to bigger pressure at 25 o'clock, damping due to rotation power suffered when rotating shaft 14 drive rotors 20 are turned clockwise in stator 5 is bigger, and the magnetic rheology elastic body 10 on stator 5 two ends end caps 11 and 26 internal surfaces and 25 is by four branch end end faces 45 and 47 of rotor 20, damping roller 2 and 24 on 46 and 48, after 9 and 16 roll extrusion are flat, owing to be subjected to four branch end end faces 45 and 47 of rotor 20, the influence of 46 and 48 electromagnetic field and be difficult to return to normal has only four branch end end faces 45 and 47 when rotor 20,46 and 48 leave just can return to normal behind this zone and (see for details: 51 among Fig. 7 and Fig. 8,52,53 and 54); If rotor 20 continues rotation, then the magnetic rheology elastic body 10 that has returned to normal on stator 5 two ends end caps 11 and 26 internal surfaces and 25 will so be gone round and begun again by (electromagnetic field of the rotor 20 that turns over) " curing " and by damping roller 2 and 24,9 and 16 roll extrusion on 20 4 branch end end faces 45 of rotor and 47,46 and 48 again.Situation when rotating shaft 14 drive rotors 20 are rotated counterclockwise motion in stator 5 is similar with it, repeats no more herein.
Claims (3)
1. magnetic rheology elastic body rotary type damper, it comprises: stator, rotor, damping roller and two rotating shafts is characterized in that: described stator is cylindrical shape, all is provided with end cap at the stator two ends, in the center hole of end cap bearing is installed; The internal surface of described stator two ends end cap has all been fixed one deck magnetic rheology elastic body; Described rotor is I-shaped, be wound with field coil at I-shaped rotor, the groove of a half cone-shaped is arranged at the middle part of four branch end faces of I-shaped 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; Described damping roller is conical, and the damping roller is installed in the half cone-shaped groove; One end of described two rotating shafts and the two ends of I-shaped rotor are fixed, and the other end of two rotating shafts stretches out in stator by the bearing on the end cap of stator two ends respectively; Described rotor is installed in the stator, width between four branch end faces of I-shaped rotor is less than the spacing between the magnetic rheology elastic body on the end cap internal surface of stator two ends, width on four branch end faces of I-shaped rotor between the damping roller is greater than the spacing between the magnetic rheology elastic body on the end cap internal surface of stator two ends, and the width on four branch end faces of I-shaped rotor between the damping roller is less than the spacing between the end cap of stator two ends.
2. a kind of magnetic rheology elastic body rotary type damper as claimed in claim 1, it is characterized in that: the end cap at described stator two ends, 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: wherein rotating shaft of described two rotating shafts has central through bore, the lighting outlet of rotor excitation coil leads to outside the stator by the center hole of rotating shaft, and described two rotating shafts are made of non-magnet_conductible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210043876 CN102562898B (en) | 2012-02-26 | 2012-02-26 | Rotary damper with magnetorheological elastomers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210043876 CN102562898B (en) | 2012-02-26 | 2012-02-26 | Rotary damper with magnetorheological elastomers |
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| Publication Number | Publication Date |
|---|---|
| CN102562898A CN102562898A (en) | 2012-07-11 |
| CN102562898B true CN102562898B (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210043876 Expired - Fee Related CN102562898B (en) | 2012-02-26 | 2012-02-26 | Rotary damper with magnetorheological elastomers |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104634491B (en) * | 2015-02-03 | 2017-02-22 | 中国科学院工程热物理研究所 | Induction rotor structure for high-power and high-rotating speed electromagnetic eddy current dynamometer |
| CN110835886A (en) * | 2019-09-05 | 2020-02-25 | 中国建筑第四工程局有限公司 | Pier damping device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664402A (en) * | 2005-04-01 | 2005-09-07 | 中国科学技术大学 | Vibration damper with controllable stiffness and damping |
| CN2747412Y (en) * | 2004-11-16 | 2005-12-21 | 中国船舶重工集团公司第七○二研究所 | Active-passive vabrition damper |
| CN202441803U (en) * | 2012-02-26 | 2012-09-19 | 谢宁 | Magnetorheological elastomer rotating damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8152145B2 (en) * | 2009-04-29 | 2012-04-10 | Honeywell International Inc. | Isoelastic magneto-rheological elastomer isolator |
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2012
- 2012-02-26 CN CN 201210043876 patent/CN102562898B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2747412Y (en) * | 2004-11-16 | 2005-12-21 | 中国船舶重工集团公司第七○二研究所 | Active-passive vabrition damper |
| CN1664402A (en) * | 2005-04-01 | 2005-09-07 | 中国科学技术大学 | Vibration damper with controllable stiffness and damping |
| CN202441803U (en) * | 2012-02-26 | 2012-09-19 | 谢宁 | Magnetorheological elastomer rotating damper |
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| CN102562898A (en) | 2012-07-11 |
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Owner name: LIU ANCHENG Free format text: FORMER OWNER: XIE NING Effective date: 20130722 |
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Free format text: CORRECT: INVENTOR; FROM: TAN HEPING XIE NING LIU QIANG TAN XIAOJING TO: LIU ANCHENG Free format text: CORRECT: ADDRESS; FROM: 400700 BEIPEI, CHONGQING TO: 408422 NANCHUAN, CHONGQING |
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Effective date of registration: 20130722 Address after: In 408422 the first school in Nanchuan District of Chongqing Applicant after: Liu Ancheng Address before: 400700 Chongqing city Beibei District Three Longfeng Village No. 36-18-2 Applicant before: Xie Ning |
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