CN102562923A - Rotary magnetorheological damper with magnetorheological elastomer - Google Patents
Rotary magnetorheological damper with magnetorheological elastomer Download PDFInfo
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- CN102562923A CN102562923A CN2012100271593A CN201210027159A CN102562923A CN 102562923 A CN102562923 A CN 102562923A CN 2012100271593 A CN2012100271593 A CN 2012100271593A CN 201210027159 A CN201210027159 A CN 201210027159A CN 102562923 A CN102562923 A CN 102562923A
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Abstract
The invention discloses a rotary magnetorheological damper with a magnetorheological elastomer, which comprises a cylindrical stator, two same electromagnets, a damping rotor and damping rollers. A rotary shaft of the damping rotor extends out of two ends of the stator through bearings on two end caps of the stator, the magnetorheological elastomer is fixed to the outer circumferential surface of the damping rotor, one end of each of the two same electromagnets is symmetrically fixed to the inner circumference of the stator, a semicircular groove is arranged in the middle of the other end of each of the two same electromagnets, the diameter of each semicircular groove is larger than that of each damping roller, the damping rollers are mounted in the semicircular grooves at the other ends of the two same electromagnets, the distance between the two electromagnets is larger than the outer diameter of the magnetorheological elastomer on the damping rotor, the distance between the damping rollers on the two electromagnets is smaller than the outer diameter of the magnetorheological elastomer on the damping rotor, and the distance between the damping rollers on the two electromagnets is larger than the outer diameter of the damping rotor.
Description
Technical field
The invention belongs to a kind of damper, be specifically related to a kind of magnetic rheology elastic body revolving type magnetic rheologic 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 revolving type magnetic rheologic damper to existing revolving type magnetic rheologic damper.
Technological scheme of the present invention is following: a kind of magnetic rheology elastic body revolving type magnetic rheologic damper; It comprises: stator, two identical electromagnet, damping rotor and damping rollers; Stator is a cylindrical shape, all is provided with end cap at the stator two ends, in the center hole of end cap, bearing is installed; The damping rotor is installed in the stator; The rotating shaft of damping rotor is stretched out from the two ends of stator through the bearing on the end cap of stator two ends, and the damping rotor is the cylinder bodily form, has fixed one deck magnetic rheology elastic body at the outer peripheral surface of damping rotor; One end of two identical electromagnet is fixed on the inner circumference of stator symmetrically; There is a semicircular groove at the middle part of the other end of two same electrical magnet; The shaft axis of semi-circular recesses and the axis parallel of stator, the diameter of semi-circular recesses is greater than the diameter of damping roller; The damping roller is installed in the semi-circular recesses of two same electrical magnet the other ends; Spacing between two electromagnet is greater than the external diameter of magnetic rheology elastic body on the damping rotor; Spacing on two electromagnet between the damping roller is less than the external diameter of magnetic rheology elastic body on the damping rotor; Spacing on two electromagnet between the damping roller is greater than the external diameter of damping rotor, and stator, damping rotor and damping roller constitute by permeability magnetic material.
Function of the present invention be achieved in that since on the stator spacing between two electromagnet greater than the external diameter of magnetic rheology elastic body on the damping rotor; Spacing on two electromagnet between the damping roller is less than the external diameter of magnetic rheology elastic body on the damping rotor; Spacing on two electromagnet between the damping roller is greater than the external diameter of damping rotor; So, when rotating shaft drive damping rotor rotates in stator, when the magnetic rheology elastic body on the damping rotor outer peripheral surface is crossed the damping roller on the electromagnet in rotating tee; Under the roll extrusion of damping roller, will be crushed, will receive certain damping due to rotation power in stator thereby rotating shaft is driven when the damping rotor rotates; Because of stator, damping rotor and damping roller constitute by permeability magnetic material, can pass through stator, damping rotor and damping roller and form closed magnetic circuit so be fixed on the magnetic line of force that two same electrical magnet on the inner circumference of stator are produced; When two electromagnet do not have electric current to pass through; There is not the magnetic line of force through the magnetic rheology elastic body on the damping rotor outer peripheral surface; Therefore; The elasticity of the magnetic rheology elastic body on the damping rotor outer peripheral surface is less, when the epitrochanterian magnetic rheology elastic body of damping when rotating tee is crossed the damping roller on the electromagnet, the magnetic rheology elastic body on the electromagnet on the damping roller roll extrusion damping rotor excircle will receive less pressure; Damping due to rotation power suffered when rotating shaft drive damping rotor is rotated in stator is less, and the magnetic rheology elastic body on the damping rotor outer peripheral surface returns to normal after being flattened by the damping roller immediately; After two electromagnet feed electric current; Two electromagnet will generate an electromagnetic field; The magnetic line of force that this electromagnetic field produces will form closed magnetic circuit through stator, damping rotor and damping roller; Make the ferromagnetic particle in the magnetic rheology elastic body on the damping rotor outer peripheral surface that is between damping rotor and the electromagnet form chain or column aggregated structure and make its elasticity higher at magnetic direction; When rotating shaft drive damping rotor rotates in stator; Magnetic rheology elastic body on the damping rotor outer peripheral surface forward to electromagnet below the time under the effect in the magnetic field that electromagnet produces, begin by " curing "; Magnetic rheology elastic body on damping rotor excircle continues rotation, and the magnetic rheology elastic body on the damping rotor excircle will be by fully " curing ", therefore during damping roller place on arriving electromagnet; On damping roller roll extrusion damping rotor outer peripheral surface on the electromagnet, will be received bigger pressure by the magnetic rheology elastic body of abundant " curing ", damping due to rotation power suffered when rotating shaft drive damping rotor is rotated in stator is bigger.When the magnetic rheology elastic body on the damping rotor excircle by electromagnet on the roll extrusion of damping roller flat after; To just can return to normal leaving the electromagnet zone; If the damping rotor continues rotation; The magnetic rheology elastic body that has then returned to normal on the damping rotor excircle will forward the below of electromagnet to once more once more by " curing " and the roll extrusion of damping roller, so go round and begin again.
Therefore; Get into the size of current in the electromagnet through adjustment; Can adjust the generate an electromagnetic field size of intensity of electromagnet; Thereby change the elasticity size be in the magnetic rheology elastic body on the electromagnetic field zone internal damping rotor excircle that electromagnet produces, make the damping due to rotation power of magnetic rheology elastic body revolving type magnetic rheologic damper obtain adjustment.
Compare with existing magnetorheological rotary damper, do not make its structure simpler because of the magnetic rheology elastic body revolving type magnetic rheologic 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 the sectional view of Fig. 1.
Fig. 3 is the closed magnetic field schematic representation that two electromagnet produce.
Fig. 4 is a work schematic representation of the present invention.
Embodiment
Specify structure of the present invention below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2, this is a kind of concrete structure of the present invention, a kind of magnetic rheology elastic body revolving type magnetic rheologic damper; It comprises: stator 1, two identical electromagnet 3 and 13, damping rotor 14 and damping roller 4 and 12; Stator 1 is a cylindrical shape, is provided with end cap 7 and 17 at the two ends of stator 1, and bearing 8 and 16 are installed in the center hole of end cap 7 and 17; Damping rotor 14 is installed in the stator 1; The rotating shaft 9 of damping rotor 14 is stretched out from the two ends of stator 1 through the bearing 8 and 16 on stator 1 two ends end cap 7 and 17, and damping rotor 14 is the cylinder bodily form, has fixed one deck magnetic rheology elastic body 2 at the outer peripheral surface of damping rotor 14; Two identical electromagnet 3 and an end of 13 are fixed on the inner circumference of stator 1 symmetrically; On electromagnet 3 and 13, be fixed with field coil 5 and 10; There are a semicircular groove 22 and 23 in the middle part of two the same electrical magnet 3 and 13 the other end; Semi-circular recesses 22 and 23 shaft axis and the axis parallel of stator 1, semi-circular recesses 22 and 23 diameter are greater than the diameter of damping roller 4 and 12; Damping roller 4 and 12 axles 6 through its two ends are installed in the semi-circular recesses 22 and 23 of two the same electrical magnet 3 and 13 the other ends with axle 18, axle 11 and axle 15; Spacing between two electromagnet 3 and 13 is greater than the external diameter of magnetic rheology elastic body 2 on the damping rotor 14; Spacing on two electromagnet 3 and 13 between the damping roller 4 and 12 is less than the external diameter of magnetic rheology elastic body 2 on the damping rotor 14; Spacing on two electromagnet 3 and 13 between the damping roller 4 and 12 is greater than the external diameter of damping rotor 14, and stator 1, damping rotor 14 and damping roller 4 and 12 constitute by permeability magnetic material.
Combine accompanying drawing that a kind of magnetic rheology elastic body revolving type magnetic rheologic damper of the present invention is further described now: Fig. 3; Dotted line among Fig. 3 is closed magnetic line of force schematic representation; Because the spacing on the stator 1 between the electromagnet 3 and 13 is greater than the external diameter of magnetic rheology elastic body 2 on the damping rotor 14; Spacing on the electromagnet 3 and 13 between the damping roller 4 and 12 is less than the external diameter of magnetic rheology elastic body 2 on the damping rotor 14; Spacing on the electromagnet 3 and 13 between the damping roller 4 and 12 is greater than the external diameter of damping rotor 14; So when rotating shaft 9 drove damping rotors 14 and in stator 1, rotates, the magnetic rheology elastic body 2 on damping rotor 14 outer peripheral surfaces was crossed damping roller 4 and on electromagnet 3 and 13 at 12 o'clock in rotating tee; Under the roll extrusion of damping roller 4 and 12, will be crushed, will receive certain damping due to rotation power in stator 1 thereby rotating shaft 9 is driven when damping rotor 14 rotates; Because of stator 1, damping rotor 14 and damping roller 4 and 12 constitute by permeability magnetic material, can pass through stator 1, damping rotor 14 and damping roller 4 and 12 formation closed magnetic circuits so be fixed on the magnetic line of force that two the same electrical magnet 3 and 13 on the inner circumference of stator 1 produced;
Referring to Fig. 4; Control power supply 19 through lighting outlet 20 with 21 with electromagnet 3 and 13 on field coil 5 be connected with 10; When control power supply 19 does not have electric current to pass through in the field coil 5 and 10 on electromagnet 3 and 13 during output current; Just there is not the magnetic line of force through the magnetic rheology elastic body 2 on damping rotor 14 outer peripheral surfaces; Therefore; The elasticity of the magnetic rheology elastic body 2 on damping rotor 14 outer peripheral surfaces is less, and when the magnetic rheology elastic body on the damping rotor 14 2 is being rotated counterclockwise through the damping roller 4 on electromagnet 3 and 13 and 12, the magnetic rheology elastic body 2 on damping roller 4 on the electromagnet 3 and 13 and 12 roll extrusion damping rotors, 14 excircles will receive less pressure; Damping due to rotation power suffered when rotating shaft 9 drive damping rotors 14 are rotated counterclockwise in stator 1 is less, and the magnetic rheology elastic body 2 on damping rotor 14 outer peripheral surfaces returns to normal after being flattened by damping roller 4 and 12 immediately;
When controlling power supply 19 behind field coil on electromagnet 3 and 13 5 and 10 output currents; Electromagnet 3 and 13 will generate an electromagnetic field; The magnetic line of force that this electromagnetic field produces will form closed magnetic circuit through stator 1, damping rotor 14 and damping roller 4 and 12; Make the ferromagnetic particle in the magnetic rheology elastic body 2 on damping rotor 14 outer peripheral surfaces that are between damping rotor 14 and electromagnet 3 and 13 form chain or column aggregated structure and make its elasticity higher at magnetic direction; When rotating shaft 9 drive damping rotors 14 are rotated counterclockwise in stator 1; Magnetic rheology elastic body 2 on damping rotor 14 outer peripheral surfaces forward to electromagnet 3 and 13 below the time under the effect in the magnetic field that electromagnet 3 and 13 produces, begin by " curing "; Magnetic rheology elastic body 2 on damping rotor 14 excircles continues rotation; Magnetic rheology elastic body 2 on damping rotor 14 excircles will be by abundant " curing " when damping roller 4 and 12 places on arriving electromagnet 3 and 13; Therefore, on damping roller 4 on electromagnet 3 and 13 and 12 roll extrusion damping rotors, 14 outer peripheral surfaces, will be received bigger pressure by the magnetic rheology elastic body 2 of abundant " curing ", damping due to rotation power suffered when rotating shaft 9 drive damping rotors 14 are rotated counterclockwise in stator 1 is bigger.When the magnetic rheology elastic body 2 on damping rotor 14 excircles by electromagnet 3 and 13 on damping roller 4 and 12 roll extrusion flat after; Electromagnet zone just can return to normal (22 among Fig. 4) will left; If damping rotor 14 continues rotation; The magnetic rheology elastic body 2 that has then returned to normal on damping rotor 14 excircles will forward the below of electromagnet 3 and 13 to once more by " curing " with by damping roller 4 and 12 roll extrusion, so go round and begin again.Situation when rotating shaft 9 drive damping rotors 14 are made clockwise rotation in stator 1 is similar with it, repeats no more here.
Claims (2)
1. magnetic rheology elastic body revolving type magnetic rheologic damper; It comprises: stator, two identical electromagnet, damping rotor and damping rollers; Said stator is a cylindrical shape, all is provided with end cap at the stator two ends, in the center hole of end cap, bearing is installed; Said damping rotor is installed in the stator; The rotating shaft of damping rotor is stretched out from the two ends of stator through the bearing on the end cap of stator two ends, it is characterized in that: said damping rotor is the cylinder bodily form, has fixed one deck magnetic rheology elastic body at the outer peripheral surface of damping rotor; One end of said two identical electromagnet is fixed on the inner circumference of stator symmetrically; There is a semicircular groove at the middle part of the other end of two same electrical magnet; The shaft axis of semi-circular recesses and the axis parallel of stator, the diameter of semi-circular recesses is greater than the diameter of damping roller; Said damping roller is installed in the semi-circular recesses of two same electrical magnet the other ends; Spacing between said two electromagnet is greater than the external diameter of magnetic rheology elastic body on the damping rotor; Spacing on two electromagnet between the damping roller is less than the external diameter of magnetic rheology elastic body on the damping rotor, and the spacing on two electromagnet between the damping roller is greater than the external diameter of damping rotor.
2. a kind of magnetic rheology elastic body revolving type magnetic rheologic damper as claimed in claim 1 is characterized in that: said stator, damping rotor and damping roller constitute by permeability magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100271593A CN102562923A (en) | 2012-02-08 | 2012-02-08 | Rotary magnetorheological damper with magnetorheological elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100271593A CN102562923A (en) | 2012-02-08 | 2012-02-08 | Rotary magnetorheological damper with magnetorheological elastomer |
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| CN102562923A true CN102562923A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100271593A Pending CN102562923A (en) | 2012-02-08 | 2012-02-08 | Rotary magnetorheological damper with magnetorheological elastomer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398124A (en) * | 2013-08-09 | 2013-11-20 | 谭晓婧 | Magneto-rheological elastic body monocyclic membrane damper |
| US9689186B2 (en) | 2014-11-03 | 2017-06-27 | Lenovo (Beijing) Co., Ltd. | Hinge and electronic device |
| CN108153435A (en) * | 2018-01-23 | 2018-06-12 | 深圳市友基技术有限公司 | A kind of magnetic idler wheel damping unit and its implementation |
| CN108412941A (en) * | 2018-04-27 | 2018-08-17 | 山东科技大学 | Three-dimensional mixes controllable type magnetic rheological liquid damper |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2110078A5 (en) * | 1970-10-29 | 1972-05-26 | Hartwell Corp | |
| US5492312A (en) * | 1995-04-17 | 1996-02-20 | Lord Corporation | Multi-degree of freedom magnetorheological devices and system for using same |
| WO1999022162A1 (en) * | 1997-10-29 | 1999-05-06 | Lord Corporation | Controllable medium device and apparatus utilizing same |
| US6095295A (en) * | 1997-10-09 | 2000-08-01 | Korea Advanced Institute Science And Technology | Rotary damper |
| US20110181405A1 (en) * | 2008-04-29 | 2011-07-28 | Comm. A L'ener. Atom. Et Aux Energies Alt. | Force feedback interface with improved sensation |
| CN102297229A (en) * | 2011-08-18 | 2011-12-28 | 谢宁 | Double-outstretch pole magneto-rheological grease damper |
| CN102297231A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Rotary magneto-rheological damper |
| CN202418403U (en) * | 2012-02-08 | 2012-09-05 | 谢宁 | Magneto-rheologic elastic body rotary type magneto-rheologic damper |
-
2012
- 2012-02-08 CN CN2012100271593A patent/CN102562923A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2110078A5 (en) * | 1970-10-29 | 1972-05-26 | Hartwell Corp | |
| US5492312A (en) * | 1995-04-17 | 1996-02-20 | Lord Corporation | Multi-degree of freedom magnetorheological devices and system for using same |
| US6095295A (en) * | 1997-10-09 | 2000-08-01 | Korea Advanced Institute Science And Technology | Rotary damper |
| WO1999022162A1 (en) * | 1997-10-29 | 1999-05-06 | Lord Corporation | Controllable medium device and apparatus utilizing same |
| US20110181405A1 (en) * | 2008-04-29 | 2011-07-28 | Comm. A L'ener. Atom. Et Aux Energies Alt. | Force feedback interface with improved sensation |
| CN102297229A (en) * | 2011-08-18 | 2011-12-28 | 谢宁 | Double-outstretch pole magneto-rheological grease damper |
| CN102297231A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Rotary magneto-rheological damper |
| CN202418403U (en) * | 2012-02-08 | 2012-09-05 | 谢宁 | Magneto-rheologic elastic body rotary type magneto-rheologic damper |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398124A (en) * | 2013-08-09 | 2013-11-20 | 谭晓婧 | Magneto-rheological elastic body monocyclic membrane damper |
| US9689186B2 (en) | 2014-11-03 | 2017-06-27 | Lenovo (Beijing) Co., Ltd. | Hinge and electronic device |
| CN104482035B (en) * | 2014-11-03 | 2017-12-29 | 联想(北京)有限公司 | A kind of rotating shaft and electronic equipment |
| CN108153435A (en) * | 2018-01-23 | 2018-06-12 | 深圳市友基技术有限公司 | A kind of magnetic idler wheel damping unit and its implementation |
| CN108153435B (en) * | 2018-01-23 | 2024-02-13 | 深圳汉王友基科技有限公司 | Magnetic roller damping device and implementation method thereof |
| CN108412941A (en) * | 2018-04-27 | 2018-08-17 | 山东科技大学 | Three-dimensional mixes controllable type magnetic rheological liquid damper |
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Application publication date: 20120711 |