CN102635664A - Oscillating type magnetorheological damper - Google Patents
Oscillating type magnetorheological damper Download PDFInfo
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- CN102635664A CN102635664A CN2012101166024A CN201210116602A CN102635664A CN 102635664 A CN102635664 A CN 102635664A CN 2012101166024 A CN2012101166024 A CN 2012101166024A CN 201210116602 A CN201210116602 A CN 201210116602A CN 102635664 A CN102635664 A CN 102635664A
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- damper
- damper rod
- damping
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Abstract
The invention discloses an oscillating type magnetorheological damper which is formed by the means that a damping rod is arranged in a damping pipe, wherein the damping pipe is combined and fixed into a whole by the means that N+1 ring-shaped damping fins and N spacer rings are concentrically overlapped with one another one by one in the plane; each ring-shaped damping fin consists of a ring-shaped electromagnet and magnetorheological elastomers, wherein at least three pairs of magnetic poles of the ring-shaped electromagnet are uniformly distributed at the inner periphery, and the nagnetioreological elastomers with the same thickness are respectively fixed on the end surface of each magnetic pole of the ring-shaped electromagnet; each spacer ring is made from non-magnetic permeability material, the outer diameters of the spacer rings are as the same as those of the ring-shaped damping fins, and the inner diameters of the spacer rings are not less than those of the magnetic poles of the ring-shaped electromagnets; and the damping rod is in the shape of a cylinder which is made from high-magnetic permeability material, and the length of the damping rod is not less than that of the damping pipe.
Description
Technical field
The invention belongs to a kind of damper, be specifically related to a kind of rock type MR damper.
Background technique
Shaking is a kind of complicated motion; People normally adopt a plurality of dampers to make up to be its vibration damping; But this will make vibration damping structure become very complicated; So having designed again, people independently are used for the damper that three-dimensional is shaken; Like: one Chinese patent application number be: 2010105878118 " rock type MR damper ", although the vibration damping occasion that this MR damper can be used to shake, because magnetic flow liquid wherein is in case take place to leak or the sedimentation of magnetic flow liquid all can cause this MR damper performance decrease or inefficacy.
Summary of the invention
In order to overcome the defective of existing rock type MR damper, the present invention proposes a kind of rock type MR damper.
Technological scheme of the present invention is following: a kind of rock type MR damper; Be installed in the damp tube by damper rod and constitute; Wherein: damp tube is by N+1 piece annular damping fin and N interblock spacer ring, is fixed as one after the mode that changes mutually by concentric also plane by an annular damping fin and an interblock spacer ring makes up; The annular damping fin is by the ring electromagnet that on inner circumference, is evenly equipped with at least three pairs of magnetic poles, and on the end face of each magnetic pole of ring electromagnet, fixed the identical magnetic rheology elastic body of a layer thickness and constitute; Spacer ring is made up of non-magnet_conductible material, and the external diameter of spacer ring is identical with the external diameter of annular damping fin, and the internal diameter of spacer ring is not less than the internal diameter of ring electromagnet magnetic pole; Damper rod is the cylinder bodily form that is made up of high permeability material, and the length of damper rod is not less than the length of damp tube, in the external diameter of damper rod and the damp tube on the ring electromagnet magnetic pole end face internal diameter of magnetic rheology elastic body identical; Damper rod is installed in the damp tube, and stretch out in damp tube at the two ends of damper rod, and the magnetic rheology elastic body on the ring electromagnet magnetic pole end face is fixed in the excircle of damper rod and the damp tube.
Function of the present invention be achieved in that because of rock type MR damper be damp tube by N+1 piece annular damping fin and N interblock spacer ring; After making up, the mode that changes mutually by concentric and plane by an annular damping fin and an interblock spacer ring is fixed as one; And damper rod is installed in the damp tube, and the magnetic rheology elastic body in the excircle of damper rod and the damp tube on the ring electromagnet magnetic pole strength is fixed; So; When an end of the damper rod of rock type MR damper shakes to certain direction; Can make damper rod that integral body takes place in damp tube and shake, damper rod shaking in damp tube will make the magnetic rheology elastic body between damper rod excircle and the ring electromagnet magnetic pole strength deform, and a part that makes the magnetic rheology elastic body on the ring electromagnet magnetic pole end face is compressed and another part is stretched; When ring electromagnet is not switched on; Ring electromagnet does not generate an electromagnetic field, and does not just have the magnetic line of force to pass through the magnetic rheology elastic body between each magnetic pole end face of ring electromagnet and the damper rod excircle, therefore yet; The elasticity of the magnetic rheology elastic body on each magnetic pole end face of ring electromagnet is less, and an end that makes rock type MR damper damper rod suffered damping force when shaking to certain direction is less;
After the ring electromagnet energising; Ring electromagnet will generate an electromagnetic field; Because of damper rod is the cylinder bodily form that is made up of high permeability material; So; The magnetic line of force that this electromagnetic field produces will pass through each magnetic pole end face of ring electromagnet, magnetic rheology elastic body and damper rod and form closed magnetic circuit, makes the ferromagnetic particle in the magnetic rheology elastic body on each magnetic pole end face of electromagnet make its elasticity higher at magnetic direction formation chain or column aggregated structure, and an end that makes damper rod suffered damping force when shaking to certain direction is bigger.
Get into the size of current in the ring electromagnet through adjustment; Can adjust the electromagnetic field intensity that ring electromagnet produces; Make the elasticity size of the magnetic rheology elastic body on each the magnetic pole end face of ring electromagnet that is in the closed magnetic circuit obtain adjustment; Thereby the damping force that makes rock type MR damper obtains adjustment; Compare with existing rock type MR damper; Because of a kind of rock type MR damper has not only solved the leakage problem of magnetic flow liquid, and can regulate separately through regulating the electric current that gets into each ring electromagnet because of the elasticity of the magnetic rheology elastic body on each magnetic pole end face of ring electromagnet, the adjusting that makes a kind of rock type MR damper damping force more flexibly and performance is better.
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 a kind of structural representation of spacer ring in the middle of the present invention.
Fig. 4 is a kind of structural representation of damping fin among the present invention.
Fig. 5 is the sectional view of Fig. 4.
Fig. 6 and Fig. 7 are work schematic representation of the present invention, and the dotted line among the figure is the magnetic line of force.
Embodiment
Specify structure of the present invention 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 rock type MR damper; Be installed in the damp tube 2 by damper rod 6 and constitute, wherein: damp tube 2 is by 4 annular damping fins 1 and 3 interblock spacer rings 5, is fixed as one after the mode that changes mutually by concentric and plane by an annular damping fin 1 and an interblock spacer ring 5 makes up; Annular damping fin 5 is by on inner circumference, being evenly equipped with four ring electromagnets 8 to (eight) magnetic pole; And on the end face of each magnetic pole of ring electromagnet 8, fixed the identical magnetic rheology elastic body 4 of a layer thickness, on each magnetic pole, all be wound with field coil 3 (seeing for details: Fig. 4 and Fig. 5) and constitute; Spacer ring 5 is made up of non-magnet_conductible material, and the external diameter of spacer ring 5 is identical with the external diameter of annular damping fin 1, and the internal diameter that the internal diameter of spacer ring 5 is not less than ring electromagnet 8 magnetic poles (sees for details: Fig. 3); Damper rod 6 is the cylinder bodily forms that are made up of high permeability material, and the length of damper rod 6 is not less than the length of damp tube 2, in the external diameter of damper rod 6 and the damp tube 2 on the annular electromagnetism 8 magnetic pole end faces internal diameter of magnetic rheology elastic body 4 identical; Damper rod 6 is installed in the damp tube 2, and stretch out from damp tube 2 at the two ends of damper rod 6, and the magnetic rheology elastic body 4 on the ring electromagnet 8 magnetic pole end faces is adhesively fixed in the excircle of damper rod 6 and the damp tube 2.
Combination figure Fig. 6 comes a kind of rock type MR damper of the present invention is further described with Fig. 7 now: each field coil 3 of each annular damping fin 1 is connected with controller 7 through lighting outlet; When the upper end of the damper rod 6 of rock type MR damper is shaken to the right; Damper rod 6 is shaken in damp tube 2; When the lower end of damper rod 6 is shaken left if the upper end of damper rod 6 is shaken to the right; With the magnetic rheology elastic body 4 between damper rod 6 excircles and the ring electromagnet 8 magnetic pole end faces is deformed; The right-hand component of magnetic rheology elastic body 4 that makes the ring electromagnet 8 magnetic pole end faces of damp tube 2 upper ends is compressed and left-hand component is stretched, and the right-hand component of the magnetic rheology elastic body 4 of the ring electromagnet 8 magnetic pole end faces of damp tube 2 lower ends is stretched and left-hand component is compressed; At controller 7 not during 8 output currents of the ring electromagnet in damp tube 2; Ring electromagnet 8 does not generate an electromagnetic field; Just there is not the magnetic line of force to pass through the magnetic rheology elastic body 4 between ring electromagnet 8 each magnetic pole end face and damper rod 6 excircles yet; Therefore, the elasticity of the magnetic rheology elastic body 4 on ring electromagnet 8 each magnetic pole end face is less, and damping force suffered when the upper end of rock type MR damper damper rod 6 is shaken to the right is less;
Behind controller 7 each ring electromagnet 8 output current in damp tube 2; Each ring electromagnet 8 will generate an electromagnetic field; Because of damper rod 6 are the cylinder bodily forms that are made up of high permeability material; So; The magnetic line of force that this electromagnetic field produces will pass through each ring electromagnet 2 each magnetic pole end face, magnetic rheology elastic body 4 and damper rod 6 and form closed magnetic circuits, makes the ferromagnetic particle in the magnetic rheology elastic body 4 on each ring electromagnet 8 each magnetic pole end face make its elasticity higher at magnetic direction formation chain or column aggregated structure, and damping force suffered when the upper end of damper rod 6 is shaken to the right is bigger; The size of each ring electromagnet 8 output currents of adjustment controller 7 in damp tube 2; Can adjust the elasticity size of the magnetic rheology elastic body 4 on ring electromagnet 8 each magnetic pole end face, damping force size suffered when the upper end of damper rod 6 is shaken to the right is controlled.
When a kind of situation of upper end when arbitrary direction is shaken of damper rod 6 of rock type MR damper is similar with it, repeat no more here.
Claims (1)
1. rock type MR damper; Be to be installed in the damp tube by damper rod to constitute; It is characterized in that: said damp tube is by N+1 piece annular damping fin and N interblock spacer ring, is fixed as one after the mode that changes mutually by concentric also plane by an annular damping fin and an interblock spacer ring makes up; Said annular damping fin is by the ring electromagnet that on inner circumference, is evenly equipped with at least three pairs of magnetic poles, and on the end face of each magnetic pole of ring electromagnet, has fixed the identical magnetic rheology elastic body of a layer thickness and constitute; Said spacer ring is made up of non-magnet_conductible material, and the external diameter of spacer ring is identical with the external diameter of annular damping fin, and the internal diameter of spacer ring is not less than the internal diameter of ring electromagnet magnetic pole; Said damper rod is the cylinder bodily form that is made up of high permeability material, and the length of damper rod is not less than the length of damp tube; Said damper rod is installed in the damp tube, and stretch out in damp tube at the two ends of damper rod, and the magnetic rheology elastic body on the ring electromagnet magnetic pole end face is fixed in the excircle of damper rod and the damp tube.
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CN 201210116602 CN102635664B (en) | 2012-04-20 | 2012-04-20 | Oscillating type magnetorheological damper |
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CN 201210116602 CN102635664B (en) | 2012-04-20 | 2012-04-20 | Oscillating type magnetorheological damper |
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CN102635664B CN102635664B (en) | 2013-09-18 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104482091A (en) * | 2014-11-07 | 2015-04-01 | 合肥工业大学 | Vibration isolator with active vibration absorbing ability |
CN108374840A (en) * | 2018-03-30 | 2018-08-07 | 浙江师范大学 | A kind of sliding bearing brake apparatus and control method based on magnetic rheology effect |
CN109015739A (en) * | 2018-06-21 | 2018-12-18 | 西北工业大学 | A kind of healing robot variation rigidity flexible joint |
CN109505913A (en) * | 2018-12-05 | 2019-03-22 | 山东科技大学 | A kind of permanent magnet type magnetic current variable elastomeric vibration isolators |
CN112923126A (en) * | 2021-02-05 | 2021-06-08 | 广西科技大学 | Annular and radial mixed type channel magnetorheological valve |
CN114623187A (en) * | 2022-04-25 | 2022-06-14 | 重庆大学 | Industrial pipeline high-frequency vibration damper based on magnetorheological fabric |
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JPH02150526A (en) * | 1988-11-29 | 1990-06-08 | Showa Electric Wire & Cable Co Ltd | Vibration isolator |
EP0784163A1 (en) * | 1996-01-11 | 1997-07-16 | Ford Motor Company Limited | Variable stiffness bushing using magnetorheological elastomers |
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CN200982373Y (en) * | 2006-12-06 | 2007-11-28 | 汪建晓 | Magnet rheological fluid elastomer damper for rotor oscillation control |
CN102042361A (en) * | 2010-12-15 | 2011-05-04 | 谭晓婧 | Rocking type magnetorheological damper |
CN102248216A (en) * | 2011-07-01 | 2011-11-23 | 黑龙江科技学院 | Vibration inhibiting device in axial-flow type impeller processing |
CN202510617U (en) * | 2012-04-20 | 2012-10-31 | 谢宁 | Shaking type magneto-rheological damper |
-
2012
- 2012-04-20 CN CN 201210116602 patent/CN102635664B/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH02150526A (en) * | 1988-11-29 | 1990-06-08 | Showa Electric Wire & Cable Co Ltd | Vibration isolator |
CN2258553Y (en) * | 1994-04-18 | 1997-07-30 | 山东建筑材料工业学院 | Damping force controllable magnetic puwder vibration-damper |
EP0784163A1 (en) * | 1996-01-11 | 1997-07-16 | Ford Motor Company Limited | Variable stiffness bushing using magnetorheological elastomers |
US5816587A (en) * | 1996-07-23 | 1998-10-06 | Ford Global Technologies, Inc. | Method and apparatus for reducing brake shudder |
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CN102042361A (en) * | 2010-12-15 | 2011-05-04 | 谭晓婧 | Rocking type magnetorheological damper |
CN102248216A (en) * | 2011-07-01 | 2011-11-23 | 黑龙江科技学院 | Vibration inhibiting device in axial-flow type impeller processing |
CN202510617U (en) * | 2012-04-20 | 2012-10-31 | 谢宁 | Shaking type magneto-rheological damper |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104482091A (en) * | 2014-11-07 | 2015-04-01 | 合肥工业大学 | Vibration isolator with active vibration absorbing ability |
CN104482091B (en) * | 2014-11-07 | 2016-11-02 | 合肥工业大学 | A kind of vibration isolator with actively vibration absorption ability |
CN108374840A (en) * | 2018-03-30 | 2018-08-07 | 浙江师范大学 | A kind of sliding bearing brake apparatus and control method based on magnetic rheology effect |
CN108374840B (en) * | 2018-03-30 | 2023-08-25 | 浙江师范大学 | Sliding bearing braking device based on magneto-rheological effect and control method |
CN109015739A (en) * | 2018-06-21 | 2018-12-18 | 西北工业大学 | A kind of healing robot variation rigidity flexible joint |
CN109015739B (en) * | 2018-06-21 | 2021-04-02 | 西北工业大学 | Variable-rigidity flexible joint of rehabilitation robot |
CN109505913A (en) * | 2018-12-05 | 2019-03-22 | 山东科技大学 | A kind of permanent magnet type magnetic current variable elastomeric vibration isolators |
CN112923126A (en) * | 2021-02-05 | 2021-06-08 | 广西科技大学 | Annular and radial mixed type channel magnetorheological valve |
CN112923126B (en) * | 2021-02-05 | 2022-05-27 | 广西科技大学 | Annular and radial mixed type channel magnetorheological valve |
CN114623187A (en) * | 2022-04-25 | 2022-06-14 | 重庆大学 | Industrial pipeline high-frequency vibration damper based on magnetorheological fabric |
CN114623187B (en) * | 2022-04-25 | 2024-06-04 | 重庆大学 | Industrial pipeline high-frequency vibration damper based on magnetorheological fabric |
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Granted publication date: 20130918 Termination date: 20140420 |