CN100350171C - High performance, multiple plates, revolving type magnetic rheologic damper - Google Patents
High performance, multiple plates, revolving type magnetic rheologic damper Download PDFInfo
- Publication number
- CN100350171C CN100350171C CNB200510040890XA CN200510040890A CN100350171C CN 100350171 C CN100350171 C CN 100350171C CN B200510040890X A CNB200510040890X A CN B200510040890XA CN 200510040890 A CN200510040890 A CN 200510040890A CN 100350171 C CN100350171 C CN 100350171C
- Authority
- CN
- China
- Prior art keywords
- quiet
- damping
- moving
- damping fin
- sleeve
- 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
Landscapes
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to the application technique of magnetic rheological fluid. The present invention comprises a mechanical device of a damper and a control circuit, wherein the mechanical device comprises two sleeves which are provided with exciting coils, two moving disk sheets and a fixed disk sheet which are totally sheathed on a rotating shaft; the fixed disk sheet is positioned in the middle, and both sides of the fixed disk sheet are respectively provided with a moving disc sheet and a sleeve; a fixed damping fin is fixedly connected with a housing made of magnetism nonconducting material; a moving copper sleeve rotating with the shaft is arranged among the fixed damping fin, a moving damping fin and the rotating shaft, and the middle part of the moving copper sleeve is provided with a lug boss; the fixed damping fin forms a movable fit with the excircle of the lug boss; the length of the lug boss is greater than the thickness of the fixed damping fin; the thickness of the moving damping fin is smaller than the length of the step portion of the copper sleeve occupied by the moving damping fin to form a sealing cavity containing magnetic rheological fluid; a fixed copper sleeve which does not rotate with the shaft is arranged among the sleeves and the rotating shaft; both sides of the sleeves are respectively provided with end caps; rolling bearings are embedded in the positions of the central holes of the end caps. The present invention greatly increases damping moment values through the measures of reducing a working gap containing the magnetic rheological fluid, increasing the area of the damping fins, increasing the number of the damping fins, making a magnetic field sealed inside a damper, etc.
Description
Technical field
The present invention relates to the magnetic flow liquid application technology, be specifically related to the magnetorheological fluid damp device.
Background technique
Magnetic flow liquid is an important branch in the intellectual material family.Magnetic flow liquid shows as the good Newtonian fluid of mobile performance under the null field situation, its apparent viscosity is very little; And can be in the short time of millisecond magnitude under strong magnetic field action, its apparent viscosity increases by two and presents the class solid property more than the order of magnitude, and change procedure is a continuous reversible.In the prior art, utilize the characteristics that the magnetic rheology effect response is rapid and be easy to control, designed and be applicable to initiatively and comparatively complete electronic products such as the damper of half ACTIVE CONTROL, break, clutch, hydrovalve, seal arrangement, outstanding advantages such as they have in light weight, and are highly sensitive, that response is fast, the little pollution-free and energy consumption of noise is low.But particularly shear yield stress is not high owing to the performance of magnetic flow liquid own, and factor affecting such as device heat radiation in addition, physical dimension make magnetorheological device application field be subjected to severely restricts.
The mode of operation of magnetic flow liquid in device has three kinds of shearing, extruding and mixing; According to magnetic flow liquid mode of operation difference, damper correspondingly is divided into linear type and rotary two big classes.
At present, the MR damper product of U.S. LORD company research and design is the most representative, successfully is applied to the vibration damping of automotive seat.Domestic this type of damping device is confined to the linear type damper more.A kind of rotary type damper is disclosed in the CN200320120247.4 patent (combined type magnetorheological rotary damper).Also have CN01244463.4 (rotary magnetic rheological liquid damper) etc. in addition, these rotary type dampers all only use single damping disc, and the medium working clearance more than 1mm, this makes that the damping torque of its acquisition is less, has limited its using scope; Their exciting current is bigger simultaneously, makes the coil heating amount big, causes and can't normally use for a long time.In addition, yet exist the magnetic field loss bigger, the defective that working efficiency is not high.
Summary of the invention
The object of the invention is to overcome the prior art deficiency, and a kind of dynamic shearing moment height, heat dissipation is good and loss of field is little magnetorheological rotary damper are provided.
Solution of the present invention is as follows:
Magnetorheological rotary damper of the present invention comprises damper mechanical device and control circuit two-part, described damper mechanical device comprises field coil, damping disc and fills the sealed cavity of magnetic flow liquid, it is characterized in that described damper mechanical device comprises two sleeves that are built-in with field coil, two Moving plate sheets and the quiet disc of a slice, the three is equipped with mesopore, and all be sleeved on the running shaft, in the middle of quiet disc was positioned at, a Moving plate sheet and a sleeve that is built-in with field coil were respectively put in both sides.The external diameter of quiet disc and two sleeves is identical, and its periphery is provided with the shell of being made by non-magnet material, and quiet damping fin and shell connect firmly.Between quiet, dynamic damping sheet and running shaft, be provided with and rotate (for example key cooperates) and the middle moving copper sheathing that boss is arranged with axle, between the boss cylindrical of quiet damping fin and moving copper sheathing for movingly, for connecting firmly, stop the axial play of Moving plate sheet between the dynamic damping sheet of both sides and the moving copper sheathing.The length of boss is greater than quiet damping fin thickness, dynamic damping sheet thickness is less than the length of shared copper sheathing step part, difference between the two all in the 0.6-2mm scope, make between quiet, the dynamic damping sheet and dynamic damping sheet and the sleeve that is equipped with field coil between formation hold the sealed cavity of magnetic flow liquid; Be provided with the quiet copper sheathing that does not rotate (movingly) between sleeve and running shaft, this sleeve and quiet copper sheathing interference fit with axle; The described sleeve outside that is built-in with field coil is respectively equipped with end cap, and this end cap and shell and sleeve all connect firmly, and the external cord of field coil is drawn with power supply and is communicated with by being located at line hole on the end cap; The place is embedded with passive rolling bearing at the end cap mesopore; On shell, be provided with in order to inject the aperture and the sealing device of magnetic flow liquid.
Can be in actual the use according to the needs of shearing moment, increase quiet damping fin to two slice or more than two, the dynamic damping sheet is increased to more than three or three, the boss number of moving copper sheathing is identical with quiet damping fin number.
In order to prevent the leakage of magnetic flow liquid, must seal, remove to improve respectively to assemble slightly to make between surface of contact and be outside one's consideration, adopt sealer, flexible thin pad, O type teflon circle to implement sealing respectively according to the kinetic property between the component, can reach the double action that seals and reduce mechanical friction resistance.
Damper of the present invention, owing to used cover in the non-magnetic conduction, magnetic field is pushed to damping disc outer rim effectively, equal the theory of the each several part damping force sum of products on the damping arm of force and the damping fin according to damping torque, this design has increased the damping arm of force of effective magnetic field, thereby improves the dynamic antivibration moment values significantly.On the other hand, magnetic loop of the present invention is coil, end cap, axis, side end cap, sleeve, damping fin, magnetic flow liquid, coil in addition, make axis become the part of magnetic circuit, shell need not be passed through in magnetic field, this just makes shell can adopt non-magnet material to make, and not only can save fabricating cost, and more important is to be enclosed in damper inside to magnetic field effectively, prevent from and reduce magnetic field to leak, also can increase heat diffusion area simultaneously and strengthen radiating effect.Compared with prior art, the present invention can be by the measures such as working clearance width, increase damping fin area and increase damping fin number that reduce to hold magnetic flow liquid, increase magnetic flow liquid and damping fin surface area of contact, thereby increase substantially the damping torque value, solve the too small difficult problem of traditional single damping fin dynamic shearing moment, and advantages such as structure is comparatively compact, easy to process are arranged.Damper of the present invention can be used in a plurality of fields such as gymnastic apparatus, automobile, aviation.
Description of drawings
Description of drawings
Fig. 1 is damper embodiment's of the present invention structural representation.
Fig. 2 is the Magnetic field distribution schematic representation of the embodiment of the invention.
Embodiment
Referring to accompanying drawing 1, this damper external form overall dimensions is respectively diameter 180mm, thickness 120mm.Aluminium shell 1 connects firmly quiet damping fin 13 and end cap 2 by sunk screw; Sleeve 3 is built-in with field coil 10, be interference fit between sleeve 3 and the quiet copper sheathing 4, and install O type teflon circle 6 additional and implement sealing, between quiet copper sheathing 4 and the running shaft 5 for movingly, that is to say, when running shaft 5 was in rotation status, quiet copper sheathing 4 is transfixion still, and quiet copper sheathing internal surface and axis outer surface adopt the little O type teflon circle of mechanical friction resistance 6 to implement sealing.Moving copper sheathing 9 and running shaft 5 interference fit, there is a boss at its middle part, quiet damping fin 13 is sleeved on herein, for movingly, two dynamic damping sheets 12 are installed in the step place at moving copper sheathing two ends respectively between the two, and are axially respectively connecting firmly with two sunk screws and moving copper sheathing boss, anti-locking plate axial float, when running shaft 5 was in rotation status, moving copper sheathing 9 and two dynamic damping sheets 12 were all being followed synchronously and are being rotated, and quiet damping fin 13 transfixion still.Wherein, the length of moving copper sheathing boss is 9.5mm, and quiet damping fin 13 thickness are 8mm, and both differences are the sealed cavity width that holds magnetic flow liquid 11; Also for holding the sealed cavity of magnetic flow liquid, the gap is similarly 0.8mm between Moving plate sheet and the sleeve interior surface.This width is controlled at 0.6-2mm usually, and present embodiment is selected 0.8mm for use.The 8th, passive rolling bearing, its inner ring and running shaft 5 interference assembling, the outer ring is fixed in end cap 2 inboard aperture.7 for being located on the aluminium shell aperture and the sealing device in order to the filling magnetic flow liquid, has four.
Referring to Fig. 2, when this damper in running order, be that field coil is when being switched on power supply, the magnetic line of force along coil 10, end cap 2, axis 5, side end cap 2, damping disc 12,13, magnetic flow liquid 11, coil 10 constitute loops in addition, because the shielding action of aluminium shell and interior copper sheathing, effectively controlling magnetic field loop direction and scope, to greatest extent magnetic field is guided into the damping fin outer rim, and be enclosed in the shell, thereby increase damping arm of force value, improve damping torque.
The control circuit part that present embodiment uses is prior art, it comprises control signal loop that control panel, sensor, power supply etc. form and the field current driving loop that is formed by control panel, ammeter, power supply, field coil winding etc., and its used power supply is a DC electrical source.
Embodiment's working procedure: after sensor obtains the extraneous moment values signal that requires, signal is passed to control loop, decision is loaded into electric current opportunity on the field coil, current amplitude etc. to power source generator according to control signal, realizes the damper continuous control.So produce the excitation field of respective strengths in the magnetic flow liquid working zone, MRF viscosity sharply increases, solid-liquid phase change takes place, produce magnetic rheology effect, obtain damping torque, rotary shaft rotating speed is reduced or stop.This damper Buddhist nun device is installed on the training athlete rehabilitation machines, replaces traditional mechanical friction type damping device, and impede motion person reaches the purpose of training leg muscle by the rotation of foot treadle driven rotary axle.
Claims (2)
1. high performance, multiple plates, revolving type magnetic rheologic damper, comprise damper mechanical device and control circuit two-part, described damper mechanical device comprises field coil, damping disc and fills the sealed cavity of magnetic flow liquid, it is characterized in that described damper mechanical device comprises two sleeves that are built-in with field coil, two Moving plate sheets and the quiet disc of a slice, the three is equipped with mesopore, and all be sleeved on the running shaft, in the middle of quiet disc was positioned at, a Moving plate sheet and a sleeve that is built-in with field coil were respectively put in both sides; The external diameter of quiet disc and two sleeves is identical, and its periphery is provided with the shell of being made by non-magnet material, and quiet damping fin and shell connect firmly; Between quiet, dynamic damping sheet and running shaft, be provided with axle and rotate and the middle moving copper sheathing that boss is arranged, between the boss cylindrical of quiet damping fin and moving copper sheathing for movingly, between the dynamic damping sheet of both sides and the moving copper sheathing for connecting firmly the axial play of prevention Moving plate sheet; The length of boss is greater than quiet damping fin thickness, dynamic damping sheet thickness is less than the length of shared copper sheathing step part, difference between the two all in the 0.6-2mm scope, make between quiet, the dynamic damping sheet and dynamic damping sheet and the sleeve that is equipped with field coil between formation hold the sealed cavity of magnetic flow liquid; Be provided with the quiet copper sheathing that does not rotate between sleeve and running shaft, this sleeve and quiet copper sheathing interference fit with axle; The described sleeve outside that is built-in with field coil is respectively equipped with end cap, and this end cap and shell and sleeve all connect firmly, and the external cord of field coil is drawn with power supply and is communicated with by being located at line hole on the end cap; The place is embedded with passive rolling bearing at the end cap mesopore; On shell, be provided with in order to inject the aperture and the sealing device of magnetic flow liquid.
2. high performance, multiple plates, revolving type magnetic rheologic damper as claimed in claim 1, it is characterized in that described quiet damping fin is increased to two or two when above, the dynamic damping sheet is increased to more than three or three, and the boss number of moving copper sheathing is identical with quiet damping fin number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510040890XA CN100350171C (en) | 2005-06-30 | 2005-06-30 | High performance, multiple plates, revolving type magnetic rheologic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510040890XA CN100350171C (en) | 2005-06-30 | 2005-06-30 | High performance, multiple plates, revolving type magnetic rheologic damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1727720A CN1727720A (en) | 2006-02-01 |
| CN100350171C true CN100350171C (en) | 2007-11-21 |
Family
ID=35927160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510040890XA Expired - Fee Related CN100350171C (en) | 2005-06-30 | 2005-06-30 | High performance, multiple plates, revolving type magnetic rheologic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100350171C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424793C (en) * | 2006-11-10 | 2008-10-08 | 南京航空航天大学 | Embedded magnetic rheological fluid intelligent material sandwich structure |
| CN102011822B (en) * | 2010-10-20 | 2013-03-20 | 哈尔滨工程大学 | Hybrid vibration isolator |
| CN102168736B (en) * | 2011-05-05 | 2012-07-11 | 天津大学 | Magnetorheological torsional vibration damper for engine |
| CN102297231A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Rotary magneto-rheological damper |
| CN103272366B (en) * | 2013-05-10 | 2015-09-16 | 上海工程技术大学 | A kind of chest expanding body-building device |
| CN105251144B (en) * | 2015-11-02 | 2018-05-22 | 上海理工大学 | High-altitude slow-descending equipment based on magnetic rheological liquid damper |
| CN106763486A (en) * | 2017-01-04 | 2017-05-31 | 四川大学 | New Multiple level magnetic flow liquid double mass flywheel |
| CN107061558B (en) * | 2017-03-30 | 2019-05-10 | 东北大学 | A kind of more magneto-rheologic liquid brakes of wall-cooled type |
| CN106838062B (en) * | 2017-03-30 | 2018-11-27 | 东北大学 | A kind of Y type brake disc magnetic rheological brake |
| CN108869614B (en) * | 2018-08-15 | 2019-03-12 | 山东大学 | A kind of rotary self-adaptive magnetorheological fluid shock absorber |
| CN114909426B (en) * | 2022-05-12 | 2023-10-27 | 中山大学 | Multi-coil magnetorheological fluid damper |
| CN114877009B (en) * | 2022-05-16 | 2024-02-23 | 郑州大学 | Intelligent magnetorheological damper with anti-sedimentation function and method for controlling damping force output |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201392A (en) * | 1992-05-15 | 1993-04-13 | Fairchild Space And Defense Corporation | Change of state coupling |
| JPH1054434A (en) * | 1996-08-08 | 1998-02-24 | Fuji Seiki Co Ltd | Rotary damper |
| CN1482376A (en) * | 2003-07-24 | 2004-03-17 | 上海交通大学 | Construction variable rotary magnetic current flowing deforming brake |
| CN2659492Y (en) * | 2003-12-05 | 2004-12-01 | 中国科学技术大学 | Combined magnetic rheopetic rotary damper |
| CN1189679C (en) * | 2001-06-19 | 2005-02-16 | 中国科学技术大学 | Rotary magnetic rheological liquid damper |
| CN2816485Y (en) * | 2005-06-30 | 2006-09-13 | 中国科学技术大学 | High-performance multi-piece-rotating type magnetic current-variation damper |
-
2005
- 2005-06-30 CN CNB200510040890XA patent/CN100350171C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201392A (en) * | 1992-05-15 | 1993-04-13 | Fairchild Space And Defense Corporation | Change of state coupling |
| JPH1054434A (en) * | 1996-08-08 | 1998-02-24 | Fuji Seiki Co Ltd | Rotary damper |
| CN1189679C (en) * | 2001-06-19 | 2005-02-16 | 中国科学技术大学 | Rotary magnetic rheological liquid damper |
| CN1482376A (en) * | 2003-07-24 | 2004-03-17 | 上海交通大学 | Construction variable rotary magnetic current flowing deforming brake |
| CN2659492Y (en) * | 2003-12-05 | 2004-12-01 | 中国科学技术大学 | Combined magnetic rheopetic rotary damper |
| CN2816485Y (en) * | 2005-06-30 | 2006-09-13 | 中国科学技术大学 | High-performance multi-piece-rotating type magnetic current-variation damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1727720A (en) | 2006-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100350171C (en) | High performance, multiple plates, revolving type magnetic rheologic damper | |
| CN2816485Y (en) | High-performance multi-piece-rotating type magnetic current-variation damper | |
| CN101737449B (en) | Screw rod type magnetorheological rotary damper | |
| CN102878225A (en) | Multiple-piece magneto-rheological fluid torque transferring device | |
| CN202082318U (en) | Single disc-type magneto rheological flexible brake | |
| CN108527435B (en) | Magnetorheological fluid-based continuous controllable stiffness-variable robot flexible joint | |
| CN107061558B (en) | A kind of more magneto-rheologic liquid brakes of wall-cooled type | |
| CN101225859A (en) | Magneto-rheologic liquid brake | |
| CN108458006A (en) | The Novel disc-type magnetic rheological brake encouraged using annular permanent magnet and magnet exciting coil | |
| CN2659492Y (en) | Combined magnetic rheopetic rotary damper | |
| CN109027046A (en) | A kind of big controlled range magnetic rheological clutch of small size | |
| CN108506376A (en) | A kind of New Rotary magnetic rheological brake | |
| CN106884898B (en) | A kind of squash type torque magnetic rheological clutch | |
| CN202625690U (en) | Magneto rheological clutch electric | |
| CN107425698A (en) | A kind of automobile-used cartridge type permanent-magnet eddy current retarder | |
| CN201866135U (en) | Braking device based on magnetorheological fluid | |
| CN1295453C (en) | Magnetorheological continuously variable transmission | |
| CN208369437U (en) | A kind of swing arm vehicle liquid cold dish formula permanent-magnet eddy current flexibility retarder and automobile | |
| CN204119084U (en) | Ultra-magnetic telescopic stepping motor | |
| CN207134975U (en) | A kind of automobile-used cartridge type permanent-magnet eddy current retarder | |
| CN107218320B (en) | Electric current becomes retarder brake | |
| CN103490589B (en) | A kind of coaxial sleeve cartridge type permanent magnet eddy current coupling adopting magnetism-gathering magnetic line structure | |
| CN107228154B (en) | Electric vehicle shock absorber | |
| CN214304957U (en) | Double-coil side-arranged multilayer magneto-rheological brake | |
| CN201860245U (en) | Cylindrical rotary table permanent magnet speed governor |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Vico magnetoelectric Technology Co. Ltd. Assignor: University of Science and Technology of China Contract fulfillment period: 2008.8.20 to 2013.8.19 contract change Contract record no.: 2008330002361 Denomination of invention: High performance, multiple plates, revolving type magnetic rheologic damper Granted publication date: 20071121 License type: Exclusive license Record date: 20081125 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.20 TO 2013.8.19; CHANGE OF CONTRACT Name of requester: HANGZHOU VEKEN MAGNETIC TECHNOLOGY CO., LTD. Effective date: 20081125 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20110630 |