CN1779289A - Rotary magnetic rheological brake - Google Patents
Rotary magnetic rheological brake Download PDFInfo
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- CN1779289A CN1779289A CN 200410084576 CN200410084576A CN1779289A CN 1779289 A CN1779289 A CN 1779289A CN 200410084576 CN200410084576 CN 200410084576 CN 200410084576 A CN200410084576 A CN 200410084576A CN 1779289 A CN1779289 A CN 1779289A
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- stator
- round platform
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- rotor
- rotating shaft
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Abstract
A rotary-type magnetic developing and change break includes mechanical section and magnetic control section. The mechanical section comprises rotor, stator and magnetic develop and change liquid in between. The magnetic control section comprises the inner layer of the rotor shaft wrapped with coil and out layer of plastic material.
Description
Technical field
What the present invention relates to is to use a kind of intellectual material---magnetic flow liquid, realizes rotation motion mechanism is implemented in good time, reversible, continuous control, is used for mechanical automatic control technology field.
Background technique
Magnetic flow liquid is by high magnetic permeability, the small soft magnetic particles of low magnetic hysteresis and the suspension that non-magnetic liquid mixes.The particle size distribution of this suspension magnetic flow liquid under zero magnetic field condition is mixed and disorderly, presents low viscous Newtonian fluid characteristic; Under the effect in magnetic field, but be well-regulated, and arrange the feature that has produced the class solid along magnetic direction chaining or chain pencil and can become difficult plasticity Ben-Hur (Bingham) fluid that flows of high viscosity by the runny Newtonian fluid of little viscosity.Because the rheology of magnetic flow liquid under the action of a magnetic field be moment, reversible, and the shear yield strength after its rheology and magnetic intensity have stable corresponding relation.That the basic working modes of existing magnetic flow liquid driver has is shearing, three types of flowing types, extruding type.
Find through literature search prior art, at " intelligence structure and material " (Smart Structures and Material1997.Proc.SPIE Vol.3045, p.148-159,1997) go up " design principle of magnetic flow liquid actuator under the different operating model " published, (Design rules for MR fluid actuators in different working modes.)
The author has provided in this article that magnetic flow liquid is shearing, the principle of flowing type, three kinds of element task models of extruding type and with the relation of parameter, and introduced this three kinds of application of model examples.Disk and drum type clutch under the described shearing work pattern of article, its magnetic circuit complicated layout, magnetorheological efficient is low, and the value that moment can reach is limited.
Summary of the invention
The objective of the invention is to overcome existing braking control and can not realize shortcomings such as low energy consumption control, control moment deficiency, control mechanism complexity rotation motion mechanism, design a kind of at the in good time Torque Control of the mechanism for implementing of doing rotation motion, the control magnetic circuit is arranged simple, and the big I of control moment is come choice structure parameter and the unique magnetic circuit of design as required.
The present invention has greatly simplified the control structure of break, and temperature influence is less,, solved problems such as magnetic circuit difficult arrangement, low cost of manufacture easily is automated.And the most important point is that the present invention adopts very effectively and increases epitrochanterian round platform quantity, and adjacent hot-wire coil current opposite in direction can make the identical and way that strengthen of the magnetic direction of same gap location solve the not enough problem of moment.
Description of drawings
The structure of break and magnetic Circuit Design such as accompanying drawing, solid line is a mechanical structure, dotted line is represented magnetic circuit.
Embodiment
The present invention is achieved by the following technical solutions:
1, structural design: whole trainstop is divided into three parts: rotor, stator and the magnetic flow liquid between rotor and stator.Stator is the housing of break, transfixion.Rotor is round platform for the parts of conduction rotation motion at the two ends of rotor, with the rotating shaft of centre be one; The inside and outside double-layer structure of intermediate section, interior is rotating shaft, is tied with hot-wire coil in the rotating shaft, skin is plastics.Rotor, stator should be made by high magnetic conductive metal material.
Gap between epitrochanterian round platform and the stator is far smaller than the axial length of round platform radius and round platform, is full of magnetic flow liquid between gap between epitrochanterian round platform and the stator and working of plastics and the stator.
2, the design of magnetic circuit: in the internal rotor rotating shaft, twining hot-wire coil as field coil, the magnetic line of force that field coil produces should be along the center steering axle, pass through round platform, pass the gap between round platform and stator barrel again, arrive stator casing, pass the gap between round platform and stator barrel again, get back to rotating shaft and form closed magnetic circuit.
3, the control of moment: the magnetic field that produces by field coil is by the gap between round platform and the stator, make the magnetic-particle in the magnetic flow liquid of gap location radially be arranged in " chain ", when rotor sways, the direction of its linear velocity radially is arranged in the direction of " chain " with magnetic-particle vertical, " chain " in the magnetic flow liquid sheared, and the shear yield strength of magnetic flow liquid and magnetic induction intensity have corresponding relation, the size of magnetic induction intensity is to determine by the electric current in the field coil, so just can reach the purpose of the shear yield strength of control magnetic flow liquid by the size of electric current in the control coil, thereby make magnetic flow liquid produce braking moment, realize in good time rotor, reversible continuous braking control.
4, as if the braking moment deficiency, can increase the quantity of epitrochanterian round platform, adjacent hot-wire coil current direction should be opposite, can make the identical and enhancing of magnetic direction of same gap location.
Claims (3)
1, a kind of structural design of rotary magnetic rheological brake is divided into three parts: rotor, stator and the magnetic flow liquid between rotor and stator.Stator is the housing of break, transfixion.Rotor is round platform for the parts of conduction rotation motion at the two ends of rotor, with the rotating shaft of centre be one; The inside and outside double-layer structure of intermediate section, interior is rotating shaft, is tied with hot-wire coil in the rotating shaft, skin is plastics.It is characterized in that rotor, stator should be made by high magnetic conductive metal material.Gap between epitrochanterian round platform and the stator is far smaller than the axial length of round platform radius and round platform, is full of magnetic flow liquid between gap between epitrochanterian round platform and the stator and working of plastics and the stator.
2, profit requires the magnetic Circuit Design part of 1 described rotary magnetic rheological brake, it is characterized in that in the internal rotor rotating shaft, twining hot-wire coil as field coil, the magnetic line of force that field coil produces should be along the center steering axle, by round platform, pass the gap between round platform and stator barrel again, arrive stator casing, pass the gap between round platform and stator barrel again, get back to rotating shaft and form closed magnetic circuit.
3, rotary magnetic rheological brake according to claim 1 is characterized in that can increasing the quantity of epitrochanterian round platform as if the braking moment deficiency, and adjacent hot-wire coil current direction should be opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084576 CN1779289A (en) | 2004-11-25 | 2004-11-25 | Rotary magnetic rheological brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410084576 CN1779289A (en) | 2004-11-25 | 2004-11-25 | Rotary magnetic rheological brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1779289A true CN1779289A (en) | 2006-05-31 |
Family
ID=36769717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410084576 Pending CN1779289A (en) | 2004-11-25 | 2004-11-25 | Rotary magnetic rheological brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1779289A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414133C (en) * | 2006-10-24 | 2008-08-27 | 中国石油天然气集团公司 | Auxiliary braking device for magnetic rheological body petroleum drilling rig |
| CN100424793C (en) * | 2006-11-10 | 2008-10-08 | 南京航空航天大学 | Embedded magnetic rheological fluid intelligent material sandwich structure |
| CN102252049A (en) * | 2011-05-05 | 2011-11-23 | 梁厚庞 | Manufacturing method of magnetic fluid brake device |
| CN102261405A (en) * | 2011-04-09 | 2011-11-30 | 林智勇 | Magnetic fluid oil pressure disc brake device |
| TWI391578B (en) * | 2011-02-22 | 2013-04-01 | Univ Nat Taipei Technology | Magneto-rheological fluid brake |
-
2004
- 2004-11-25 CN CN 200410084576 patent/CN1779289A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414133C (en) * | 2006-10-24 | 2008-08-27 | 中国石油天然气集团公司 | Auxiliary braking device for magnetic rheological body petroleum drilling rig |
| CN100424793C (en) * | 2006-11-10 | 2008-10-08 | 南京航空航天大学 | Embedded magnetic rheological fluid intelligent material sandwich structure |
| TWI391578B (en) * | 2011-02-22 | 2013-04-01 | Univ Nat Taipei Technology | Magneto-rheological fluid brake |
| CN102261405A (en) * | 2011-04-09 | 2011-11-30 | 林智勇 | Magnetic fluid oil pressure disc brake device |
| CN102252049A (en) * | 2011-05-05 | 2011-11-23 | 梁厚庞 | Manufacturing method of magnetic fluid brake device |
| CN102252049B (en) * | 2011-05-05 | 2012-10-24 | 梁厚庞 | Manufacturing method of magnetic fluid brake device |
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