CN101725659A - External electromagnet magnetorheological damper - Google Patents
External electromagnet magnetorheological damper Download PDFInfo
- Publication number
- CN101725659A CN101725659A CN200910191908A CN200910191908A CN101725659A CN 101725659 A CN101725659 A CN 101725659A CN 200910191908 A CN200910191908 A CN 200910191908A CN 200910191908 A CN200910191908 A CN 200910191908A CN 101725659 A CN101725659 A CN 101725659A
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- China
- Prior art keywords
- piston
- electromagnet
- clutch release
- slave cylinder
- release slave
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- Fluid-Damping Devices (AREA)
Abstract
The invention discloses an external electromagnet magnetorheological damper, consisting of an electromagnet, a working cylinder, a piston and a piston rod, and magnetorheological fluid is filled in the working cylinder. The piston is a solid cylindrical structure, and because the electromagnet is fixed on the external circumference of the working cylinder, magnetic field intensity design in the working cylinder is not limited by the area of the cross section of the piston, thereby greatly improving the magnetic field intensity in the working cylinder, increasing the adjusting range of damping force of the external electromagnet magnetorheological damper, and simultaneously improving the working and radiating condition of exciting coils.
Description
Technical field
The present invention relates to a kind of MR damper, be specifically related to a kind of external electromagnet magnetorheological damper.
Background technique
The piston of common shearing valve type magneto-rheological damper adopts the dumbbell shaped structure usually as magnetic field generator, field coil just is wrapped in the dumbbell shaped middle of piston, when piston and clutch release slave cylinder generation relative movement, the magnetic flow liquid in the clutch release slave cylinder will be forced to enter by the gap of piston and working cylinder from an end of piston the other end of piston; Because the variation of yield strength can take place with the variation of gap internal magnetic field intensity in the magnetic flow liquid that flows through the gap, therefore, this class MR damper is exactly the magnetic intensity that changes in the gap that the electric current that passes through in the field coil on the piston comes regulating piston and working cylinder, come the resistance to motion of regulating piston in clutch release slave cylinder, make the damping force of damper controlled; Yet, because this class MR damper is subjected to the restriction of dumbbell shaped piston minimum cross section area, make the magnetic intensity that piston produced be difficult to improve as magnetic field generator, cause the excursion of the damping force of this class MR damper to be difficult to do greatly.
Summary of the invention
For overcoming the defective that common shearing valve type magneto-rheological damper magnetic intensity is difficult to improve, the present invention proposes a kind of external electromagnet magnetorheological damper; External electromagnet magnetorheological damper includes electromagnet, clutch release slave cylinder, piston, piston rod and be full of magnetic flow liquid in clutch release slave cylinder, it is characterized in that electromagnet is fixed on the excircle of clutch release slave cylinder.Electromagnet as the magnetic field generator of external electromagnet magnetorheological damper is positioned on the excircle of clutch release slave cylinder, so, the magnetic intensity of external electromagnet is not designed by the restriction of piston cross-sectional area can, adopt the piston of solid cylinder body structure that the cross-sectional area of piston is improved greatly, compare with common shearing valve type magneto-rheological damper, the present invention has following advantage:
1. electromagnet places beyond the clutch release slave cylinder, has avoided field coil to be subjected to long-time the washing away repeatedly of magnetic flow liquid in clutch release slave cylinder and harmful effect that field coil is produced.
2. electromagnet is external helps heat radiation, thereby has avoided the field coil heating and cause magnetic flow liquid temperature clutch release slave cylinder in to raise the back and the magnetorheological fluid performance change that causes.
3. the design of the magnetic intensity in the external rear damper clutch release slave cylinder of electromagnet can not be subjected to the restriction of piston cross-sectional area, and can improve the magnetic intensity in the clutch release slave cylinder greatly, and the damping force adjustable extent of external electromagnet magnetorheological damper is increased.
Below by accompanying drawing the present invention is further described:
Fig. 1 is a kind of enforcement structural drawing of the present invention.
Fig. 2 is Fig. 1 sectional drawing.
Referring to Fig. 1, the two ends of the solid cylinder piston 2 that is made of high permeability material are fixed with piston rod 4, piston rod 4 stretches out from the two ends of clutch release slave cylinder 3 by the seal ring 7 and the bearing 8 of the clutch release slave cylinder 3 that is made of non-magnet_conductible material, be full of magnetic flow liquid 5 in the clutch release slave cylinder 3, be fixed on the excircle of clutch release slave cylinder 3 by modes such as drive fits with the external electromagnet 1 of clutch release slave cylinder 3 same length, two groups of field coils 6 of external electromagnet 1 and 9 and power supply join.When external electromagnet 1 is not switched on, magnetic flow liquids 5 in the clutch release slave cylinder 3 are liquid condition and better mobile, when relative movement takes place with clutch release slave cylinder 3 in piston 2, magnetic flow liquid 5 in the clutch release slave cylinder 3 will be with comparalive ease flows to the other end of piston 2 from an end of piston 2 by damp channel 11, and the resistance to motion of piston 2 in clutch release slave cylinder 3 is less; After external electromagnet 1 energising, the electromagnetic field that electromagnet 1 produces sees through the clutch release slave cylinder 3 that is made of non-magnet_conductible material, the viscosity of the magnetic flow liquid 5 in the clutch release slave cylinder 3 is increased, the magnetic intensity of damp channel 11 is improved, when relative movement takes place with clutch release slave cylinder 3 in piston 2, because the raising of the magnetic intensity of increase of the viscosity of the magnetic flow liquid in the clutch release slave cylinder 35 and damp channel 11 under the effect of electromagnetic field, the resistance to motion of piston 2 in clutch release slave cylinder 3 increased, the damping force of external electromagnet magnetorheological damper is changed.
Claims (3)
1. an external electromagnet magnetorheological damper includes electromagnet, clutch release slave cylinder, piston, piston rod, and described piston rod is fixed on the piston two ends, and the piston rod two ends stretch out in the clutch release slave cylinder two ends, and seals by sealing configuration at the clutch release slave cylinder two ends; In clutch release slave cylinder, be full of magnetic flow liquid; The external diameter of described piston leaves the gap that magnetic flow liquid passes through less than the clutch release slave cylinder internal diameter between outside piston face and clutch release slave cylinder inwall; It is characterized in that described magnetic field generator is fixed on the excircle of clutch release slave cylinder.
2. as claims 1 described a kind of external electromagnet magnetorheological damper, it is characterized in that electromagnet is an a pair of magnetic pole or many to field structure, is wound with field coil on each magnetic pole of electromagnet.
3. as claims 1 described a kind of external electromagnet magnetorheological damper, it is characterized in that piston is the solid cylinder body structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191908A CN101725659A (en) | 2009-12-15 | 2009-12-15 | External electromagnet magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191908A CN101725659A (en) | 2009-12-15 | 2009-12-15 | External electromagnet magnetorheological damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101725659A true CN101725659A (en) | 2010-06-09 |
Family
ID=42447036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910191908A Pending CN101725659A (en) | 2009-12-15 | 2009-12-15 | External electromagnet magnetorheological damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101725659A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042361A (en) * | 2010-12-15 | 2011-05-04 | 谭晓婧 | Rocking type magnetorheological damper |
| CN102141108A (en) * | 2011-03-11 | 2011-08-03 | 王靖 | External electromagnet retractable type magnetorheological damper |
| CN102297230A (en) * | 2011-08-19 | 2011-12-28 | 谢宁 | Double-outstretch pole plate magneto-rheological damper |
| CN102297229A (en) * | 2011-08-18 | 2011-12-28 | 谢宁 | Double-outstretch pole magneto-rheological grease damper |
| CN102767589A (en) * | 2012-07-02 | 2012-11-07 | 江苏科技大学 | Magneto-rheological damper adjustable in damping channel height |
| CN103032512A (en) * | 2013-01-06 | 2013-04-10 | 谭晓婧 | Combined piston double-rod magnetorheological damper |
| CN103062276A (en) * | 2013-01-15 | 2013-04-24 | 谭晓婧 | Gapped magneto-rheological damper with two piston rods out |
| CN103206479A (en) * | 2013-01-18 | 2013-07-17 | 浙大新剑（上海）智能技术有限公司 | External magneto-rheological damper single-stage excitation unit |
| CN103615486A (en) * | 2013-11-01 | 2014-03-05 | 谭苹 | Double-rod hanging-type damper |
| CN103939519A (en) * | 2014-01-26 | 2014-07-23 | 福建工程学院 | Double-pole surface plate-type magnetorheological shock absorber |
| CN105333053A (en) * | 2015-10-30 | 2016-02-17 | 合肥工业大学 | Piston-less type large-stroke magnetorheological damper |
-
2009
- 2009-12-15 CN CN200910191908A patent/CN101725659A/en active Pending
Cited By (18)
| 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 |
| CN102141108A (en) * | 2011-03-11 | 2011-08-03 | 王靖 | External electromagnet retractable type magnetorheological damper |
| CN102141108B (en) * | 2011-03-11 | 2012-09-05 | 王靖 | External electromagnet retractable type magnetorheological damper |
| CN102297229A (en) * | 2011-08-18 | 2011-12-28 | 谢宁 | Double-outstretch pole magneto-rheological grease damper |
| CN102297230A (en) * | 2011-08-19 | 2011-12-28 | 谢宁 | Double-outstretch pole plate magneto-rheological damper |
| CN102297230B (en) * | 2011-08-19 | 2013-01-02 | 谢宁 | Double-outstretch pole plate magneto-rheological damper |
| CN102767589A (en) * | 2012-07-02 | 2012-11-07 | 江苏科技大学 | Magneto-rheological damper adjustable in damping channel height |
| CN103032512A (en) * | 2013-01-06 | 2013-04-10 | 谭晓婧 | Combined piston double-rod magnetorheological damper |
| CN103032512B (en) * | 2013-01-06 | 2015-02-11 | 谭晓婧 | Combined piston double-rod magnetorheological damper |
| CN103062276A (en) * | 2013-01-15 | 2013-04-24 | 谭晓婧 | Gapped magneto-rheological damper with two piston rods out |
| CN103062276B (en) * | 2013-01-15 | 2014-12-10 | 谭晓婧 | Gapped magneto-rheological damper with two piston rods out |
| CN103206479A (en) * | 2013-01-18 | 2013-07-17 | 浙大新剑（上海）智能技术有限公司 | External magneto-rheological damper single-stage excitation unit |
| CN103206479B (en) * | 2013-01-18 | 2016-01-20 | 浙大新剑（上海）智能技术有限公司 | A kind of external magneto-rheological damper single-stage excitation unit |
| CN103615486A (en) * | 2013-11-01 | 2014-03-05 | 谭苹 | Double-rod hanging-type damper |
| CN103939519A (en) * | 2014-01-26 | 2014-07-23 | 福建工程学院 | Double-pole surface plate-type magnetorheological shock absorber |
| CN103939519B (en) * | 2014-01-26 | 2016-02-17 | 福建工程学院 | A kind of bipolar flat-faced tube magneto-rheological vibration damper |
| CN105333053A (en) * | 2015-10-30 | 2016-02-17 | 合肥工业大学 | Piston-less type large-stroke magnetorheological damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |