CN1295453C - Magnetorheological continuously variable transmission - Google Patents
Magnetorheological continuously variable transmission Download PDFInfo
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- CN1295453C CN1295453C CNB031358020A CN03135802A CN1295453C CN 1295453 C CN1295453 C CN 1295453C CN B031358020 A CNB031358020 A CN B031358020A CN 03135802 A CN03135802 A CN 03135802A CN 1295453 C CN1295453 C CN 1295453C
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- rotor
- magnetorheological
- speed changer
- stepless speed
- input shaft
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Abstract
The present invention relates to a magnetorheological stepless speed changer which is characterized in that the magnetorheological stepless speed changer comprises an inner rotor 10 which is fixedly connected with an input shaft, an outer rotor and magnetorheological fluid 11 as a working medium, wherein an excitation coil 7 is fixed in the outer rotor which is supported on the input shaft by bearings at both ends, and the magnetorheological fluid is filled in a V-shaped working gap formed between the inner rotor and the outer rotor. Through the input shaft and the inner rotor, the input torque and the rotary speed perform the function of magnetorheological effect to transfer force moment under the action of a magnetic field of the coil through the magnetorheological fluid as the working medium to realize stepless changing load torque and rotary speed output by the outer rotor. The magnetorheological stepless speed changer adopts a structure of double rotors of the inner rotor and the outer rotor to simplify the structure of the magnetorheological stepless speed changer and adopts the V-shaped working gap to obviously reduce axial dimension. The magnetorheological stepless speed changer adopts the magneticrheological fluid made of intelligent materials, an adjustable direct current power supply is used for adjusting the current of the excitation coil in a stepless mode through an electric brush, and the yield stress of the magneticrheological fluid as the working medium is changed to realize the torque and the rotary speed at the load end of a stepless changing mechanism. The present invention has the advantages of simple structure, no pollution and low work noise.
Description
Technical field
The present invention relates to stepless speed variator or stepless speed adjusting gear.Specifically be that a kind of magnetic flow liquid that adopts is the working medium step-less adjustment of carrying out torque and rotating speed between the input and output parts, can be used for the magneto-rheological stepless speed changer of occasions such as occasions such as electric bicycle, motorcycle and industrial small-power and the permanent torque control of needs.
Background technique
Traditional liquid viscosity transmission is to utilize the viscosity of liquid or oil-shear to be used for transferring power, usually the working liquid body that adopts has lubricant oil and silicone oil and hydraudynamic drive wet goods Newtonian fluid, and general adjusting oil slick thickness and the oil-shear Method for Area of adopting carried out speed regulation.The liquid_viscosity regulator system also needs huge oil supply system and complex control apparatus except arrangements for speed regulation, make that whole speed control system is bulky and cost an arm and a leg.And the eighties, electrorheological fluid in vogue showed in the application study of stepless change transmission field, the shear yield stress of electrorheological fluid is less (to be generally 20～40Kpa), and the operating voltage high (being generally several kilovolts) that adopts, make that the power supply unit of mechanism is huge and Security is bad, shown that more than baric flow becomes that fluids such as liquid, electrorheological fluid have been subjected to many restrictions on engineering is used and aspect of performance shows serious deficiency.
The application develop rapidly of magnetic flow liquid over past ten years, the engineering of magnetic rheology effect is used the performance aspect and is further enhanced, and makes well to be used at transmission field.But it mainly concentrates on the application of MR damper and fan speed-regulating clutch in the application of mechanical engineering field, and the magnetic flow liquid patent has U.S.Patent 5,785,882 and 6,149,832, introduced the component and the preparation of magnetic flow liquid; The MR damper patent has U.S.Pantent 4,992, and 190,5,549,837 and 6,471,018 B1 has introduced the various dampers of magnetic flow liquid; The magnetic rheological clutch patent has: U.S.Pantent 5,823, and 309 and 5,896,965, the structure of these two patents has all adopted the double plate structure; U.S.Panten5,845,752,5,848,678 and EP0,882,904,1,167,800A1, these four patents adopted cup type clutch configuration and put control and adjusting in fan; U.S.Panten 6,371, and 267B1 the cooling problem of putting in the magnetic flow liquid that improves a kind of cup type clutch; Chinese patent 00104451 has been introduced a kind of plate clutch of radially self-pressurization structure.Above patent is respectively the introduction of magnetic rheological liquid damper and clutch with magnetic rheologic liquid, still lose patent disclosure at the infinite variable speed magneto-rheological stepless speed changer of mechanical transmission, the magneto-rheological stepless speed changer that the present invention introduces will occur and the characteristic of the The controllable magneto rheological change effect of magnetic flow liquid is used for Variable Speed Technology.
Summary of the invention
The invention provides a kind of inner and outer rotors structure and magneto-rheological stepless speed changer of V-arrangement working clearance of adopting.Adopt the working medium of functional material magnetic flow liquid as the working clearance between principal and subordinate's dynamic component, its viscosity and yield stress can be controlled by externally-applied magnetic field, by adjustable DC electrical source step-less adjustment field coil electric current, change the yield stress of working medium magnetic flow liquid, thereby change the rotating speed of mechanism's torque transmitted and load end.
The above-mentioned purpose that the present invention adopts is to realize that by such technological scheme promptly a kind of magneto-rheological stepless speed changer comprises: with the internal rotor (10) that input shaft connects firmly, input torque and rotating speed are by described input shaft and described internal rotor (10) input; Internal fixation field coil (7); Regulate the sliding brush (12) in the described field coil (7) from the exciting curent of the adjustable DC electrical source in outside; Be supported on external rotor on the input shaft by bearings at both ends; Be full of the working medium magnetic flow liquid (11) of V-arrangement working clearance between the described inner and outer rotors, the torque of described input and rotating speed issue the transmission of magnetisation rheological effect by described magnetic flow liquid (11) working medium at described field coil (7) the action of a magnetic field, by described external rotor stepless change output, it is characterized in that: described internal rotor is made of 2 the internal rotor disks (10) that are fixed on the described input shaft, and the V-arrangement of certain radial width and axial thickness is processed in the circumference outer on described disk two sides; Described external rotor is made up of left end yoke (6), middle yoke (8) and (9) three parts of right-hand member yoke, and internal surface has the V-arrangement ditch; The described V-arrangement working clearance is made of jointly described internal rotor disk (10) V-arrangement outer and described external rotor internal surface V-arrangement ditch.
Above-mentioned magneto-rheological stepless speed changer adopts in the inner and outer rotors structure, and internal rotor is a bevelled disk on 2 excircles, adopts suitable dimension to guarantee the isoparametric requirement of work magnetic circuit magnetic flux, is fixed on the input shaft; External rotor is an output block, the internal fixation field coil, by two bearings on input shaft, but connection blue output torque and rotating speed.
The above-mentioned magneto-rheological stepless speed changer of mentioning, external rotor is made up of left end yoke, middle yoke and three parts of right-hand member yoke, and each parts adopts suitable dimension to guarantee the isoparametric requirement of work magnetic circuit magnetic flux.Drive coil is fixed on external rotor inside, and the inner lead duct of coil electric lead is arranged in the rotor.During the coil assembling, the resistant to elevated temperatures sealer of inner peripheral surface coating guarantees the sealing of the magnetic flow liquid under normal working temperature.
The above-mentioned magneto-rheological stepless speed changer of mentioning, the V-arrangement working clearance of adopting, the V-arrangement work nest is made of jointly internal rotor outer surface and external rotor internal surface, this V-arrangement working clearance has increased the effective work area and the even distribution of working clearance field intensity of working medium magnetic flow liquid, has significantly shortened the axial dimension of magneto-rheological stepless speed changer.
The above-mentioned magneto-rheological stepless speed changer of mentioning, field coil are fixed in the external rotor parts, and the skeleton of exhausted magnetic material is adopted at the inner ring position of coil, and are coated with resistant to elevated temperatures sealer at the matching part with yoke; Adjustable DC electrical source is regulated the exciting curent of yoke interior loop by fixing brush spring and epitrochanterian outside sliding brush.The magnetic circuit flow direction that the opposite access of the positive negative conductor of two coils makes two coils produce partly has humidification at shared magnetic circuit.
The above-mentioned magneto-rheological stepless speed changer of mentioning adopts the sealing of magnetic rubber seal ring to be full of the active chamber of magnetic flow liquid, and the magnetic flow liquid of curing seal ring local location has reduced the wearing and tearing of magnetic flow liquid magnetic-particle to seal ring.
Description of drawings
Accompanying drawing is a structural profile schematic representation of the present invention.
In the accompanying drawing, 1-input shaft, 2-left end cap, 3-circlip, 4-bearing, 5-seal ring,
6,8,9-external rotor conjugation iron, 7-coil, 1-internal rotor disk, 11--magnetic flow liquid, 12-sliding brush, 13-circlip.
Embodiment
By input shaft 1, internal rotor disk 10 input torques and rotating speed, the torque of input is transmitted under the excitation field effect of coil 7 by working medium 11, by the torque and the rotating speed of external rotor 6,8,9 output loadings, the external rotor right-hand member can connect output coupling member such as standard flange at last.
Claims (5)
1. magneto-rheological stepless speed changer comprises: with the internal rotor (10) that input shaft connects firmly, input torque and rotating speed are by described input shaft and described internal rotor (10) input; Internal fixation field coil (7); Regulate the sliding brush (12) in the described field coil (7) from the exciting curent of the adjustable DC electrical source in outside; Be supported on external rotor on the input shaft by bearings at both ends; Be full of the working medium magnetic flow liquid (11) of V-arrangement working clearance between the described inner and outer rotors, the torque of described input and rotating speed issue the transmission of magnetisation rheological effect by described magnetic flow liquid (11) working medium at described field coil (7) the action of a magnetic field, by described external rotor stepless change output, it is characterized in that: described internal rotor is made of 2 the internal rotor disks (10) that are fixed on the described input shaft, and the V-arrangement of certain radial width and axial thickness is processed in the circumference outer on described disk two sides; Described external rotor is made up of left end yoke (6), middle yoke (8) and (9) three parts of right-hand member yoke, and internal surface has the V-arrangement ditch; The described V-arrangement working clearance is made of jointly described internal rotor disk (10) V-arrangement outer and described external rotor internal surface V-arrangement ditch.
2. magneto-rheological stepless speed changer according to claim 1 is characterized in that: described field coil is fixed on described external rotor inside, and the inner lead duct of coil electric lead is arranged in the rotor.
3. magneto-rheological stepless speed changer according to claim 1 is characterized in that: the skeleton of exhausted magnetic material is adopted at the inner ring position that is fixed on two described field coils in the driven rotor parts, scribbles resistant to elevated temperatures sealer with the matching part of yoke; The magnetic circuit flow direction that the opposite access of the positive negative conductor of two described coils makes two described coils produce partly has humidification at shared magnetic circuit.
4. magneto-rheological stepless speed changer according to claim 1 is characterized in that: the magnetic rubber seal ring (5) between described external rotor and described axle is adopted in the sealing of the magnetic flow liquid active chamber between the described inner and outer rotors.
5. according to claim 1,2,3,4 described magneto-rheological stepless speed changers, it is characterized in that: described adjustable DC electrical source is regulated the exciting curent of yoke interior loop by fixing brush spring and the described sliding brush on described external rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031358020A CN1295453C (en) | 2003-09-08 | 2003-09-08 | Magnetorheological continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031358020A CN1295453C (en) | 2003-09-08 | 2003-09-08 | Magnetorheological continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1523251A CN1523251A (en) | 2004-08-25 |
| CN1295453C true CN1295453C (en) | 2007-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031358020A Expired - Fee Related CN1295453C (en) | 2003-09-08 | 2003-09-08 | Magnetorheological continuously variable transmission |
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| Country | Link |
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| CN (1) | CN1295453C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565120A (en) * | 2014-12-08 | 2015-04-29 | 中国矿业大学 | Magnetic flow variable-liquid and variable-torque device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443758C (en) * | 2006-09-29 | 2008-12-17 | 石家庄铁道学院 | Magnetic rheopectic solution fan clutch |
| CN101592195B (en) * | 2009-06-15 | 2010-10-20 | 杭州电子科技大学 | Transmission device based on magneto-rheological fluid |
| CN101793312A (en) * | 2010-02-11 | 2010-08-04 | 中国矿业大学 | Magneto-rheological stepless speed changer |
| CN102287499B (en) * | 2011-06-17 | 2013-04-24 | 中国矿业大学 | Magnetorheological fluid-based controllable stepless speed change system |
| CN102562979A (en) * | 2012-01-19 | 2012-07-11 | 中国矿业大学 | Magnetorheological fluid transmission device with variable power |
| CN102734410B (en) * | 2012-06-28 | 2014-09-24 | 中国矿业大学 | Magnetorheological fluid continuously variable transmission |
| CN103322143B (en) * | 2013-07-05 | 2015-09-09 | 重庆大学 | A kind of magnetorheological transmission capable of reversing |
| CN103307242B (en) * | 2013-07-05 | 2015-08-12 | 重庆大学 | A kind of magnetorheological step-less moment variator |
| CN103697126B (en) * | 2013-12-20 | 2016-01-06 | 合肥京东方光电科技有限公司 | A kind of magnetic flow liquid stepless speed variator system and rotating-speed control circuit thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392354A (en) * | 2001-06-19 | 2003-01-22 | 中国科学技术大学 | Rotary magnetic rheological liquid damper |
| WO2003025418A1 (en) * | 2001-09-07 | 2003-03-27 | Bosch Rexroth Ag | Magneto-rheological damper |
| CN1424516A (en) * | 2001-12-13 | 2003-06-18 | 中国科学技术大学 | Centrifugal magnetofluid clutch |
| CN2575371Y (en) * | 2002-07-12 | 2003-09-24 | 华侨大学 | Internal differential hydraulic cylinder |
-
2003
- 2003-09-08 CN CNB031358020A patent/CN1295453C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392354A (en) * | 2001-06-19 | 2003-01-22 | 中国科学技术大学 | Rotary magnetic rheological liquid damper |
| WO2003025418A1 (en) * | 2001-09-07 | 2003-03-27 | Bosch Rexroth Ag | Magneto-rheological damper |
| CN1424516A (en) * | 2001-12-13 | 2003-06-18 | 中国科学技术大学 | Centrifugal magnetofluid clutch |
| CN2575371Y (en) * | 2002-07-12 | 2003-09-24 | 华侨大学 | Internal differential hydraulic cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565120A (en) * | 2014-12-08 | 2015-04-29 | 中国矿业大学 | Magnetic flow variable-liquid and variable-torque device |
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| CN1523251A (en) | 2004-08-25 |
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