CN100366946C - Spiral groove structured magneto-rheological damper - Google Patents
Spiral groove structured magneto-rheological damper Download PDFInfo
- Publication number
- CN100366946C CN100366946C CNB2006100144037A CN200610014403A CN100366946C CN 100366946 C CN100366946 C CN 100366946C CN B2006100144037 A CNB2006100144037 A CN B2006100144037A CN 200610014403 A CN200610014403 A CN 200610014403A CN 100366946 C CN100366946 C CN 100366946C
- Authority
- CN
- China
- Prior art keywords
- piston
- spiral
- groove
- spiral groove
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention discloses a magnetic rheological damper with a spiral groove structure. The present invention comprises a cylinder, a piston, a piston rod and an exciting coil, wherein the piston is arranged inside the cylinder; the piston rod is connected with the piston; the exciting coil is arranged on the piston; a throttle passage is arranged between the outer lateral wall of the piston and the inner lateral wall of the cylinder; a spiral groove is arranged on the lateral wall of the piston. The present invention has the advantages that the micro and dense spiral grooves are arranged so as to not increase viscous damping force and simultaneously and obviously increase the coulomb force of yield fluid, spiricles and a spiricle can adjust the size of the peak value of the damping force, the partial deposition of magnetic rheological fluid can be avoided, the generation of air bubbles is avoided, the clearance of a magnetic circuit and the stable suspension of magnetic rheological particles are guaranteed, and the present invention is favorable to avoid the deposition of the magnetic rheological fluid.
Description
Technical field
The present invention relates to damping device, the invention particularly relates to a kind of spiral groove structured magneto-rheological damper, this damper is a kind of well behaved passive energy dissipation device, can generally be applicable in automobile, machinery, aviation, bridge and the civil engineering structure.
Background technique
MR damper is to utilize the passive energy dissipation device of magnetic flow liquid as working medium.Magnetic flow liquid be by tiny soft magnetic particles be scattered in form in the lower carrier fluid of permeability can change suspension liquid with externally-applied magnetic field with controllable rheology characteristic; Under the action of a magnetic field, magnetic flow liquid can realize in moment (10ms) by liquid state to the semi-solid reversible variation of Bingham, remove magnetic field after, can become the Newtonian fluid of good fluidity again again.Utilize this rheological properties, in MR damper cylinder barrel inboard and piston space throttling passage is set, when damper piston and cylinder body relative movement, magnetic flow liquid in then can extrusion cylinder, it is flow through from throttling passage, as throttling passage being applied the action of a magnetic field of vertical fluid moving direction, then the magnetic-particle in the passage is just arranged along the magnetic direction chaining, thereby causes the damping force of piston motion to increase.By regulating magnetic intensity, can change the yield stress of magnetic flow liquid, thereby regulate the size of exerting oneself of damper.The MR damper damping force analysis of domestic and international market is all based on the parallel-plate theory at present, and its damp channel is all very level and smooth, lacks the microcosmic optimization to damping force.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of spiral groove structured magneto-rheological damper that can optimize the damping force microcosmic is provided, adopt the size of this damper damping force adjustable peak value, guarantee unimpeded and magnetorheological particle suspending stabilized of magnetic circuit, help preventing the magnetic flow liquid sedimentation.
For achieving the above object, spiral groove structured magneto-rheological damper of the present invention, the piston rod that it comprises cylinder barrel, is arranged on the piston of described cylinder barrel inside, is connected with described piston, be installed in the field coil on the described piston, between described piston outer side wall and described cylinder barrel madial wall, be provided with throttling passage, described piston side wall is provided with the spiral lamination groove, and the described helical groove degree of depth is 0.3～0.5mm, and recess width is 0.5mm～1mm.
Compared with prior art, the present invention has following advantage:
1,, when not increasing viscous damping force, can significantly improve the Coulomb force of surrender fluid, the size of spiral lamination and spiral lamination form damping force adjustable peak value by small and intensive spiral lamination groove is set;
2, because groove is spiral lamination form but not common annular, can avoid the part alluvial of magnetic flow liquid, prevent that bubble from producing, guarantee unimpeded and magnetorheological particle suspending stabilized of magnetic circuit;
When 3, the spiral lamination lead angle is greater than 10 °, can produce greatlyyer, circulate up and down, help preventing the magnetic flow liquid sedimentation thereby can drive magnetic flow liquid around axial moment of torsion.
Advantages such as that so the present invention has is stable, efficient, good durability.
Description of drawings
Fig. 1 is the structural representation of spiral groove structured magneto-rheological damper;
Fig. 2 is that A-A is the enlarged diagram of analysing and observe of throttling passage;
Fig. 3 is the piston partial top view with thread groove;
Fig. 4 is the piston partial top view that multi start thread is set;
Fig. 5 is that tailpiece of the piston rod is the MR damper structural representation of bulb Connecting format:
Fig. 6 is that tailpiece of the piston rod is the MR damper structural representation of earrings Connecting format.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in detail.
As shown in drawings, be spiral groove structured magneto-rheological damper sketch of the present invention, it comprises cylinder barrel 3, front and rear cover 2,8, be arranged on the piston 6 of described cylinder barrel inside, the piston rod 1 that is connected with described piston, be installed in the field coil 5 on the described piston, be provided with throttling passage 4 between described piston outer side wall and described cylinder barrel madial wall, described piston side wall is provided with spiral lamination groove 7.Described spiral lamination, its lead angle (on the piston cylndrical surface, the angle on the tangent line of spiral lamination and vertical axis of thread plane) is between 5 °～60 °.
Occur than high pulling torque as avoiding, can reduce the spiral lamination lead angle, be controlled in 10 °; When structural system is insensitive to additional torque such as rod end be the bulb articulated form, can suitably increase the lead angle of spiral lamination, at this moment because the increase of spiral lamination pitch, multi start thread can be set, multi-thread lead angle is suitable identical, and rotation direction must be all left-handed or dextrorotation, to guarantee bigger damping force.The spiral lamination groove should be selected regular screw threads or square threaded form form for use.For avoiding influencing the clearance channel magnetic circuit, the spiral lamination depth of groove should be less than 0.5mm, general desirable 0.3～0.5mm, and the spiral lamination recess width can be about 0.5mm～1mm.
By small and intensive spiral lamination groove is set, when not increasing viscous damping force, can significantly improve the Coulomb force of surrender fluid.The spiral lamination lead angle is during greater than 10 °, can produce greatlyyer around axial moment of torsion, circulates up and down thereby can drive magnetic flow liquid, helps preventing the magnetic flow liquid sedimentation.Seal ring is loaded onto to prevent to be contained in magnetic flow liquid 9 leakages in the cylinder barrel 3 in attachment portion during installation between piston rod and cylinder barrel.The piston rod end is adopted bulb 10 and 11 two kinds of forms of earrings respectively according to different needs.
Claims (3)
1. spiral groove structured magneto-rheological damper, the piston rod that it comprises cylinder barrel, is arranged on the piston of described cylinder barrel inside, is connected with described piston, be installed in the field coil on the described piston, between described piston outer side wall and described cylinder barrel madial wall, be provided with throttling passage, it is characterized in that: described piston side wall is provided with the spiral lamination groove, the described helical groove degree of depth is 0.3～0.5mm, and recess width is 0.5mm～1mm.
2. spiral groove structured magneto-rheological damper according to claim 1 is characterized in that: the lead angle of described spiral lamination groove is 5 °～60 °.
3. spiral groove structured magneto-rheological damper according to claim 1 and 2 is characterized in that: described spiral lamination groove is the square threaded form form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100144037A CN100366946C (en) | 2006-06-21 | 2006-06-21 | Spiral groove structured magneto-rheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100144037A CN100366946C (en) | 2006-06-21 | 2006-06-21 | Spiral groove structured magneto-rheological damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865729A CN1865729A (en) | 2006-11-22 |
| CN100366946C true CN100366946C (en) | 2008-02-06 |
Family
ID=37424837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100144037A Expired - Fee Related CN100366946C (en) | 2006-06-21 | 2006-06-21 | Spiral groove structured magneto-rheological damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100366946C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476738B (en) * | 2008-01-03 | 2011-04-06 | 西北农林科技大学 | Fluid damping device |
| CN101749358B (en) * | 2010-02-24 | 2011-11-30 | 谭晓婧 | Damping force adjustable permanent magnet type magnetic current variable damper |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297228B (en) * | 2011-06-22 | 2012-11-07 | 谭晓婧 | Double-rod multidisc-piston magnetorheological fluid damper |
| CN102297229A (en) * | 2011-08-18 | 2011-12-28 | 谢宁 | Double-outstretch pole magneto-rheological grease damper |
| CN102297230B (en) * | 2011-08-19 | 2013-01-02 | 谢宁 | Double-outstretch pole plate magneto-rheological damper |
| CN102359535B (en) * | 2011-08-31 | 2015-06-17 | 重庆仪表材料研究所 | Magnetorheological damper |
| CN102287479A (en) * | 2011-09-01 | 2011-12-21 | 谢宁 | Double-rod magnetorheological grease damper |
| CN102582543A (en) * | 2012-02-19 | 2012-07-18 | 重庆大学 | Archimedes spiral channel based controllable magneto-rheological grease buffer |
| CN103089905B (en) * | 2013-02-04 | 2015-03-11 | 谭晓婧 | Crack cylinder double-out rod magneto-rheological damper |
| CN103511547A (en) * | 2013-10-28 | 2014-01-15 | 重庆大学 | Self-sensing magnetorheological damper adopting spiral damping channel |
| CN104858723B (en) * | 2015-05-26 | 2017-08-15 | 浙江师范大学 | Non-magnetic element spirally magnetorheological brush polishing machine |
| CN105485236A (en) * | 2016-01-04 | 2016-04-13 | 重庆大学 | Magneto-rheological buffering device |
| CN105485242B (en) * | 2016-01-20 | 2017-11-03 | 衢州职业技术学院 | A kind of MR mount device |
| CN107575522A (en) * | 2017-07-25 | 2018-01-12 | 东南大学 | A kind of magnetorheological mud damper of foraminous spiral tract |
| CN108036014A (en) * | 2017-12-21 | 2018-05-15 | 四川建筑职业技术学院 | A kind of MR damper sealing piston equipped with spiral damping passage |
| CN108506376A (en) * | 2018-06-20 | 2018-09-07 | 华东交通大学 | A kind of New Rotary magnetic rheological brake |
| CN109723750B (en) * | 2019-02-13 | 2020-06-23 | 重庆大学 | Magneto-rheological damper piston assembly with settlement active dispersing device |
| CN112392887B (en) * | 2020-11-11 | 2021-06-22 | 清华大学 | Magnetic liquid vibration damper |
| CN112901703B (en) * | 2021-01-29 | 2022-12-09 | 重庆大学 | Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids |
| CN113606276B (en) * | 2021-08-12 | 2022-06-21 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3967707A (en) * | 1973-11-21 | 1976-07-06 | Oleo International Holdings Limited | Liquid dampers |
| JPH02209643A (en) * | 1989-02-07 | 1990-08-21 | Tokai Rubber Ind Ltd | Shock absorber |
| JPH06341481A (en) * | 1993-05-31 | 1994-12-13 | Kayaba Ind Co Ltd | Shock absorber using electroviscous fluid |
| US6279700B1 (en) * | 1999-09-13 | 2001-08-28 | Delphi Technologies, Inc. | Magnetorheological fluid damper |
| US6378558B1 (en) * | 1998-05-08 | 2002-04-30 | Carl Schenck | Valve on the basis of electrorheological and/or magnetorheological fluids |
| CN2739412Y (en) * | 2004-10-29 | 2005-11-09 | 中国民用航空学院 | Gap sealed throttling channel damper |
-
2006
- 2006-06-21 CN CNB2006100144037A patent/CN100366946C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3967707A (en) * | 1973-11-21 | 1976-07-06 | Oleo International Holdings Limited | Liquid dampers |
| JPH02209643A (en) * | 1989-02-07 | 1990-08-21 | Tokai Rubber Ind Ltd | Shock absorber |
| JPH06341481A (en) * | 1993-05-31 | 1994-12-13 | Kayaba Ind Co Ltd | Shock absorber using electroviscous fluid |
| US6378558B1 (en) * | 1998-05-08 | 2002-04-30 | Carl Schenck | Valve on the basis of electrorheological and/or magnetorheological fluids |
| US6279700B1 (en) * | 1999-09-13 | 2001-08-28 | Delphi Technologies, Inc. | Magnetorheological fluid damper |
| CN2739412Y (en) * | 2004-10-29 | 2005-11-09 | 中国民用航空学院 | Gap sealed throttling channel damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476738B (en) * | 2008-01-03 | 2011-04-06 | 西北农林科技大学 | Fluid damping device |
| CN101749358B (en) * | 2010-02-24 | 2011-11-30 | 谭晓婧 | Damping force adjustable permanent magnet type magnetic current variable damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1865729A (en) | 2006-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100366946C (en) | Spiral groove structured magneto-rheological damper | |
| CN203926577U (en) | Magnetorheological fluid shock absorber | |
| CN102937158B (en) | Magneto-rheological fluid damper for automobile | |
| CN106246797B (en) | A kind of magnetic rheological liquid damper | |
| CN203051609U (en) | Combined cylinder double-outlet-rod magneto-rheological damper | |
| CN100363643C (en) | Multistep assemblied anti-settle magnetic rheological damper | |
| CN102654167B (en) | Magnetorheological damper capable of preventing magnetorheological fluid from precipitating | |
| CN105041942B (en) | A kind of frictionless fluid damping isolator | |
| CN105156574A (en) | Single-rod variable-cylinder-body passive single-control variable-damping magnetorheological damper | |
| CN108591343A (en) | A kind of externally-wound type MR damper of cylinder barrel positioning | |
| CN108302152B (en) | Magnetorheological damper with complex liquid flow channel structure | |
| CN206830720U (en) | A kind of MR damper of damped coefficient continuously adjustabe | |
| CN109764076A (en) | A kind of self-adaptive damping variable shear thickening fluid shock absorber | |
| CN105485236A (en) | Magneto-rheological buffering device | |
| CN107630972A (en) | A kind of auto magnetorheological damper | |
| CN103032512B (en) | Combined piston double-rod magnetorheological damper | |
| CN208474391U (en) | A kind of externally-wound type MR damper of cylinder barrel positioning | |
| CN108150578A (en) | A kind of liquid condenser for becoming the damping of working clearance no maximum | |
| CN102364154A (en) | Passive damping adjustable magneto-rheological fluid shock absorber | |
| CN105179575A (en) | Double-rod multistage-piston self-adaptation magnetorheological damper | |
| CN110259876B (en) | Double-cone-table type damping channel magneto-rheological vibration isolator | |
| CN106979271A (en) | A kind of novel piston inner flow passage magneto-rheological vibration damper | |
| CN105090333A (en) | Single-rod throttling-hole-changing self-adaptive magnetorheological damper | |
| CN112443618A (en) | Magneto-rheological damper with external active dispersing device | |
| CN105065528A (en) | Single-pole multi-grade piston adaptive magneto-rheological damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20100621 |