CN100366946C - Spiral groove structured magneto-rheological damper - Google Patents

Spiral groove structured magneto-rheological damper Download PDF

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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
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CN
China
Prior art keywords
piston
spiral
groove
spiral groove
magnetic
Prior art date
Application number
CNB2006100144037A
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Chinese (zh)
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CN1865729A (en
Inventor
李忠献
刘建军
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天津大学
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Application filed by 天津大学 filed Critical 天津大学
Priority to CNB2006100144037A priority Critical patent/CN100366946C/en
Publication of CN1865729A publication Critical patent/CN1865729A/en
Application granted granted Critical
Publication of CN100366946C publication Critical patent/CN100366946C/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535Magnetorheological [MR] fluid dampers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • F16F9/3405Throttling passages in or on piston body, e.g. slots

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

Spiral groove structured magneto-rheological damper

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.
CNB2006100144037A 2006-06-21 2006-06-21 Spiral groove structured magneto-rheological damper CN100366946C (en)

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

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Cited By (2)

* Cited by examiner, † Cited by third party
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 (12)

* Cited by examiner, † Cited by third party
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

Citations (6)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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Granted publication date: 20080206

Termination date: 20100621