CN101788031A - Multiple-piece two-dimensional magneto-rheological damper - Google Patents
Multiple-piece two-dimensional magneto-rheological damper Download PDFInfo
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- CN101788031A CN101788031A CN201010112712A CN201010112712A CN101788031A CN 101788031 A CN101788031 A CN 101788031A CN 201010112712 A CN201010112712 A CN 201010112712A CN 201010112712 A CN201010112712 A CN 201010112712A CN 101788031 A CN101788031 A CN 101788031A
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- shell
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- 230000033001 locomotion Effects 0.000 claims abstract description 21
- 239000004519 grease Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 18
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 description 21
- 238000001125 extrusion Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The invention discloses a multiple-piece two-dimensional magneto-rheological damper comprising a shell, a core part and a magnetic field generator, wherein the shell is internally provided with a circular ring and is provided with equal-diameter through holes on an upper bottom surface and a lower bottom surface; the core part is provided with at least two disks axially perpendicular to a mandrel on the mandrel and is arranged on the shell and in the central through holes of the upper bottom surface and the lower bottom surface of the shell; the disks arranged on the mandrel are parallelly crossed with the circular ring inside the shell or the upper bottom surface and the lower bottom surface of the shell; gaps are remained between the inner circumferential surface of the shell and the outer circumferential surface of the mandrel and between the circular ring inside the shell and the upper surface and the lower surface of the disks arranged on the mandrel; magneto-rheological fluid or magneto-rheological grease is filled in the gaps; the shell is provided with the annular magnetic field generator; and the core part inside the shell can take any motion along the radial direction inside the shell. The invention regulates the size of magnetic field strength output by the annular magnetic field generator, thereby enabling the viscosity of the magneto-rheological fluid or the magneto-rheological grease inside the gap positioned between the shell and the core part to be changed, enabling the damping force received by the core part when the core part moves in the shell to be changed and enabling the damping force of the multiple-piece two-dimensional magneto-rheological damper to be controlled.
Description
Technical field
The invention belongs to a kind of MR damper, be specifically related to a kind of multiple-piece two-dimensional magneto-rheological damper.
Background technique
Existing disclosed MR damper is mainly divided two big classes: a class is a direct-acting type, another kind of is rotary, this two classes MR damper all has its clear and definite Applicable scope, be applicable to the various vibration damping occasions that rotatablely move as revolving type magnetic rheologic damper, the direct-acting type MR damper then is applicable to reciprocating vibration damping occasion, and this two classes MR damper is owing to be subjected to the even vibration damping occasion that can not independently be applicable to the two dimensional surface motion of the restriction of its structure.
Summary of the invention
The objective of the invention is to propose a kind of multiple-piece two-dimensional magneto-rheological damper, solve the vibration damping occasion that existing MR damper can not independently be applicable to the two dimensional surface motion.
Technological scheme of the present invention is as follows:
Multiple-piece two-dimensional magneto-rheological damper, it comprises shell and cased core and toroidal magnetic field generator, is full of magnetic flow liquid or magneto-rheological grease in the gap of core and shell.
The shell of multiple-piece two-dimensional magneto-rheological damper is the cylinder barrel shaped with upper and lower bottom surface, the central through bore that equal diameters is all arranged in the upper and lower bottom surface of shell, in the enclosure circumferential surface axially on equidistantly distribute and be fixed with a slice and the parallel annulus in the upper and lower bottom surface of shell at least, the external diameter of annulus equates that with the internal diameter of shell the internal diameter of annulus is identical with the aperture of the central through bore of the upper and lower bottom surface of shell; The aperture of the central through bore of the internal diameter of annulus and the upper and lower bottom surface of shell is greater than the internal diameter of the external diameter of mandrel and the shell external diameter greater than disk on the mandrel, and leaves the gap that core is done radial motion in the enclosure; Core have mandrel with mandrel axially on equidistantly distribute at least two with the axial vertical disk of mandrel, and the mandrel center has through hole; The upper base of the spacing of annulus and annulus and shell and the spacing between the bottom surface are greater than the thickness of disk on the mandrel in the shell, and leave the flow gap of magnetic flow liquid or magneto-rheological grease, spacing between two disks of mandrel is greater than the thickness of the annulus in the shell, and leaves the flow gap of magnetic flow liquid or magneto-rheological grease.
The core of multiple-piece two-dimensional magneto-rheological damper is contained in the central through bore of shell and the upper and lower bottom surface of shell, the annulus in disk on the mandrel and the shell or the upper and lower end of shell, are parallel staggered, and the core that is contained in the shell can radially be done arbitrary motion in the enclosure.
Between the internal surface of the upper and lower bottom surface of the lower surface of the upper surface of the last layer disk of core and basecoat disk and shell, be provided with circular orientation device and annular seal; The toroidal magnetic field generator is fixed on the excircle of the outer surface of upper and lower bottom surface of shell or shell or on the axle journal at mandrel two ends, the magnetic line of force direction that the toroidal magnetic field generator produces is axial consistent with shell and core.
Working principle of the present invention is achieved in that when the core in the shell during at the straight line motion of radially doing on any direction, the outer peripheral surface of disk and magnetic flow liquid or the magneto-rheological grease between the shell inner peripheral surface on magnetic flow liquid in mandrel outer peripheral surface and the shell between the outer peripheral surface of annulus or magneto-rheological grease and the mandrel, be squeezed the back to mobile with the direction of core reverse movement, make this part magnetic flow liquid or magneto-rheological grease be operated in squeeze mode; And be in magnetic flow liquid or magneto-rheological grease in the gap between the upper and lower plane of disk on the upper and lower plane of annulus in the shell and the mandrel, then the linear relative movement because of the upper and lower plane of disk on the upper and lower plane that is subjected to annulus in the shell and the mandrel is operated in shear mode; When the core in the shell rotates, be in magnetic flow liquid or magneto-rheological grease in the gap between the upper and lower plane of disk on the upper and lower plane of annulus in the shell and the mandrel, then the relative rotary motion because of the upper and lower plane of disk on the upper and lower plane that is subjected to annulus on the shell and the mandrel is operated in shear mode; When the core in the shell when radially doing arbitrary motion, the magnetic flow liquid in the gap or the mode of operation of magneto-rheological grease can be decomposed or synthetic by above-mentioned straight line and two kinds of motion modes of rotation, repeat no more herein.
When the toroidal magnetic field generator is not worked, the low and good fluidity of magnetic flow liquid or magneto-rheological grease viscosity in the shell, the damping force when core moves in shell is little; After the generator work of toroidal magnetic field, make the raising of the magnetic intensity in the gap between shell and mandrel, magnetic flow liquid in the gap or magneto-rheological grease viscosity are uprised, it is big that the damping force that is subjected to when core is moved in shell becomes, thereby make the damping force of two-dimensional magneto-rheological damper controlled.Compare with existing MR damper, two-dimensional magneto-rheological damper of the present invention is a kind of MR damper of new structure, be a kind of MR damper that can independently be applicable to the vibration damping occasion of two dimensional surface motion, major advantage of the present invention is that the vibration insulating system that makes a plurality of MR damper of present employing finish the two dimensional surface motion obtains simplifying.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention, and dotted line is a magnetic line of force direction among the figure.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the scheme of installation that the present invention is used for longspan cable wire vibration damping
Embodiment
Below in conjunction with accompanying drawing and example in detail structure of the present invention:
Longspan cable wire vibration damping is insoluble in the industry technical problem always, and when not considering the cable wire axial elongation, the radial vibration of cable wire is the two dimensional surface vibration of a complexity, and two-dimensional magneto-rheological damper of the present invention can be used for solving the vibration damping of this type of vibration.
Referring to Fig. 1, the core 2 that is made of non-magnet_conductible material is embedded in the shell 1 that is made of non-magnet_conductible material.
4 disks 3 that core 2 has mandrel 9 and equidistantly distributes on mandrel 9, the center of mandrel 9 has the through hole 8 of cable wire being made radial constraint.
The aperture of the central through bore 17 of the internal diameter 18 of annulus 5 and shell 1 upper and lower bottom surface is greater than the internal diameter of the external diameter of mandrel 9 and shell 1 external diameter greater than disk 3 on the mandrel 9, and leaves the motion spacing 11 and 10 of core 2;
The spacing of the upper bottom surface 4 of the spacing of annulus 5 and annulus 5 and shell 1 and bottom surface 6 is greater than the thickness of disk 3 on the mandrel 9 in the shell 1, and leave the flow gap 12 of magnetic flow liquid, the spacing that two disks of mandrel 9 are 3 is greater than the thickness of the annulus in the shell 5, and leaves the flow gap 12 of magnetic flow liquid.
After in the gap of core 2 and shell 1, being full of magnetic flow liquid 16, the inner peripheral surface of annulus 5 has formed the annular extrusion passage 11 of 3 magnetic flow liquids on the outer peripheral surface of mandrel 9 and shell 1, the outer peripheral surface of disk 3 has formed the annular extrusion path 10 of 4 magnetic flow liquids on the inner peripheral surface of shell 1 and mandrel 9, and disk 3 has formed the annular shear plane 12 of 6 magnetic flow liquids on upper bottom surface 4, bottom surface 6 and the annulus 5 of shell 1 and mandrel 9.
Referring to Fig. 3, cable wire 21 radially is fixed in the through hole 8 of core 2, and shell 1 is fixed on the support 20.
When toroidal magnetic field generator 7 is not worked, magnetic flow liquid 16 in the gap is fluid state and good fluidity, when cable wire 21 moves right at drive core 2, on the outer peripheral surface of mandrel 9 and the shell 1 on the inner peripheral surface of the inner peripheral surface of annulus 5 and shell 1 and the mandrel 9 outer peripheral surface of disk 3 (be the annular extrusion path 10,11) Nei magnetic flow liquid, since the outer peripheral surface that is subjected to core 9 with shell 1 on the extruding of the outer peripheral surface of disk 3 on the inner peripheral surface of the inner peripheral surface of annulus 5 and shell 1 and the mandrel 9, will be by the annular extrusion path 10,11 and annular shear plane 12 flow to the left side of core 2, damping force suffered when core 2 is moved right is less.
When 7 work of toroidal magnetic field generator, magnetic flow liquid 16 in the gap is semi-solid state, when cable wire 21 moves right at drive core 2, the outer peripheral surface that part magnetic flow liquid is subjected to core 9 with shell 1 on the extruding of the outer peripheral surface of disk 3 on inner peripheral surface and the mandrel 9 of the inner peripheral surface of annulus 5 and shell 1, by annular extrusion path 10, the 11 direct left sides that flow to core 2 by annular extrusion path 10,11; After the shear action that another part magnetic flow liquid produces in the time of can being subjected to the relative movement of 5 of disk 3 on the mandrel 9 and the annulus in the shell 1 in annular shear plane 12, flow to the left side of core 2; Because the magnetic flow liquid 16 in the gap is semi-solid state at this moment, and the magnetic intensity in the annular shear plane 12 is bigger, therefore, damping force suffered when core 2 moves right is bigger.
When cable wire 21 drive cores 2 rotated in shell 1, because of the magnetic flow liquid 16 that is in 12 of annular shear planes is operated in shearing condition under the action of a magnetic field, the damping due to rotation power that core 2 is subjected to was bigger.When the core in the shell 12 when radially doing arbitrary motion, the mode of operation of the magnetic flow liquid 16 in the gap can be decomposed or synthetic by above-mentioned straight line and two kinds of motion modes of rotation, repeats no more herein.Power-supply controller of electric 15 is controlled by 19 pairs of toroidal magnetic field generators 7 of lighting outlet, regulate the output current of power-supply controller of electric 15 and can regulate the magnetic intensity that annular magnetic field generator 7 is produced, thus the damping force when regulating core 2 and relative movement taking place with shell 1.
Radially be fixed on the cable wire 21 in the through hole 8 of core 2 in sum, the vibration which kind of mode takes place all can drive core 2 motions, the motion of core 2 can be subjected to the constraint of magnetorheological fluid damp power in the shell 1 again, thereby realizes the vibration damping purpose of two-dimensional magneto-rheological damper to the cable wire radial vibration.
Fig. 4 is that toroidal magnetic field of the present invention generator is installed in a kind of structural representation on the axle journal of mandrel two ends.
Fig. 5 is that toroidal magnetic field of the present invention generator is installed in a kind of structural representation on the excircle of shell.
Claims (6)
1. multiple-piece two-dimensional magneto-rheological damper, it comprises shell and cased core and toroidal magnetic field generator, is full of magnetic flow liquid or magneto-rheological grease in the gap of core and shell, it is characterized in that: shell is made of non-magnet_conductible material.
2. multiple-piece two-dimensional magneto-rheological damper as claimed in claim 1 is characterized in that: described core have mandrel with mandrel axially on equidistantly distribute at least two with the axial vertical disk of mandrel, and the mandrel center has through hole.
3. multiple-piece two-dimensional magneto-rheological damper as claimed in claim 1, it is characterized in that: described shell is the cylinder barrel shaped with upper and lower bottom surface, the central through bore that equal diameters is all arranged in the upper and lower bottom surface of shell, in the enclosure circumferential surface axially on equidistantly distribute and be fixed with a slice and the parallel annulus in the upper and lower bottom surface of shell at least, the external diameter of annulus equates that with the internal diameter of shell the internal diameter of annulus is identical with the aperture of the central through bore of the upper and lower bottom surface of shell; The aperture of the central through bore of the internal diameter of annulus and the upper and lower bottom surface of shell is greater than the internal diameter of the external diameter of mandrel and the shell external diameter greater than disk on the mandrel, and leaves the gap that core is done radial motion in the enclosure; The spacing in the shell between the annulus and the upper base of annulus and shell and the spacing between the bottom surface are greater than the thickness of disk on the mandrel, and leave the flow gap of magnetic flow liquid or magneto-rheological grease, spacing between two disks of mandrel is greater than the thickness of the annulus in the shell, and leaves the flow gap of magnetic flow liquid or magneto-rheological grease.
4. multiple-piece two-dimensional magneto-rheological damper as claimed in claim 1, it is characterized in that: described core is contained in the central through bore of shell and the upper and lower bottom surface of shell, the annulus in disk on the mandrel and the shell or the upper and lower bottom surface of shell are parallel staggered, are provided with circular orientation device and annular seal between the internal surface of the upper and lower bottom surface of the lower surface of the upper surface of the last layer disk of core and basecoat disk and shell.
5. multiple-piece two-dimensional magneto-rheological damper as claimed in claim 1, it is characterized in that: described toroidal magnetic field generator is fixed on the excircle of the outer surface of upper and lower bottom surface of shell or shell or on the axle journal at mandrel two ends, the magnetic line of force direction that the toroidal magnetic field generator produces is axial consistent with shell and core.
6. multiple-piece two-dimensional magneto-rheological damper as claimed in claim 1 is characterized in that: described toroidal magnetic field generator is electromagnet or electromagnet and permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101127124A CN101788031B (en) | 2010-02-24 | 2010-02-24 | Multiple-piece two-dimensional magneto-rheological damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101127124A CN101788031B (en) | 2010-02-24 | 2010-02-24 | Multiple-piece two-dimensional magneto-rheological damper |
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| CN101788031A true CN101788031A (en) | 2010-07-28 |
| CN101788031B CN101788031B (en) | 2012-08-08 |
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| CN2010101127124A Active CN101788031B (en) | 2010-02-24 | 2010-02-24 | Multiple-piece two-dimensional magneto-rheological damper |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042361A (en) * | 2010-12-15 | 2011-05-04 | 谭晓婧 | Rocking type magnetorheological damper |
| WO2014053025A1 (en) * | 2012-10-04 | 2014-04-10 | University Of Technology, Sydney | Adaptive mre vibration isolation assembly and system |
| CN105626754A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Multi-fin rotary magneto-rheological fluid damper based on S-shaped magnetic circuit |
| CN105626755A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Small rotary type magneto-rheological fluid damper used for reproducing passive force sense |
| CN107100958A (en) * | 2017-04-28 | 2017-08-29 | 河海大学 | A kind of asymmetric rotor eddy current damper |
| CN108442554A (en) * | 2018-04-28 | 2018-08-24 | 郑州大学 | One kind can restore magnetorheological fluid shearing damp device energy-consuming shear wall |
| CN108661207A (en) * | 2018-04-28 | 2018-10-16 | 郑州大学 | It can restore energy-consuming shear wall method of construction and its shear wall of construction |
| CN114962529A (en) * | 2022-04-25 | 2022-08-30 | 重庆大学 | Multi-excitation multi-disc type magneto-rheological broadband vibration isolator |
| CN115076289A (en) * | 2022-07-06 | 2022-09-20 | 重庆大学 | Self-adaptive variable-rigidity variable-damping magnetic control vibration attenuation structure for wind tunnel tail support model |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080060710A1 (en) * | 2006-08-24 | 2008-03-13 | Carlson J D | Controllable magnetorheological fluid valve, devices, and methods |
| CN201671997U (en) * | 2010-02-24 | 2010-12-15 | 谭和平 | Multiwafer two-dimensional magnetorheological damper |
-
2010
- 2010-02-24 CN CN2010101127124A patent/CN101788031B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042361A (en) * | 2010-12-15 | 2011-05-04 | 谭晓婧 | Rocking type magnetorheological damper |
| CN102042361B (en) * | 2010-12-15 | 2012-08-15 | 谭晓婧 | Rocking type magnetorheological damper |
| WO2014053025A1 (en) * | 2012-10-04 | 2014-04-10 | University Of Technology, Sydney | Adaptive mre vibration isolation assembly and system |
| CN105626754A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Multi-fin rotary magneto-rheological fluid damper based on S-shaped magnetic circuit |
| CN105626755A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Small rotary type magneto-rheological fluid damper used for reproducing passive force sense |
| CN107100958A (en) * | 2017-04-28 | 2017-08-29 | 河海大学 | A kind of asymmetric rotor eddy current damper |
| CN107100958B (en) * | 2017-04-28 | 2019-04-30 | 河海大学 | A kind of asymmetric rotor eddy current damper |
| CN108442554A (en) * | 2018-04-28 | 2018-08-24 | 郑州大学 | One kind can restore magnetorheological fluid shearing damp device energy-consuming shear wall |
| CN108661207A (en) * | 2018-04-28 | 2018-10-16 | 郑州大学 | It can restore energy-consuming shear wall method of construction and its shear wall of construction |
| CN114962529A (en) * | 2022-04-25 | 2022-08-30 | 重庆大学 | Multi-excitation multi-disc type magneto-rheological broadband vibration isolator |
| CN114962529B (en) * | 2022-04-25 | 2024-06-04 | 重庆大学 | Multi-excitation multi-disk magneto-rheological broadband vibration isolator |
| CN115076289A (en) * | 2022-07-06 | 2022-09-20 | 重庆大学 | Self-adaptive variable-rigidity variable-damping magnetic control vibration attenuation structure for wind tunnel tail support model |
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| Publication number | Publication date |
|---|---|
| CN101788031B (en) | 2012-08-08 |
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Owner name: CHONGQING MATERIALS RESEARCH INSTITUTE Free format text: FORMER OWNER: TAN HEPING Effective date: 20120704 |
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