CN101000068A - Permanent magnetism and turbine composite bearing - Google Patents
Permanent magnetism and turbine composite bearing Download PDFInfo
- Publication number
- CN101000068A CN101000068A CN 200610137654 CN200610137654A CN101000068A CN 101000068 A CN101000068 A CN 101000068A CN 200610137654 CN200610137654 CN 200610137654 CN 200610137654 A CN200610137654 A CN 200610137654A CN 101000068 A CN101000068 A CN 101000068A
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- turbine
- magnetic ring
- ring
- bearing
- overcoat
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Abstract
The invention discloses a permanent magnet (PM)-turbine combined bearing, composed of lining and jacket where radial-magnetized cone-annular PMs are arranged, where the poles of the inner cone-annular PM on the jacket and the outer cone-annular PM on the lining are opposite and radially isolated at a gap, the lining and jacket generate both radial and axial repulsions to implement relative suspension of the lining and jacket; two ends of the lining (or jacket) are each configured with a turbine separately, so that when the lining (or jacket) rotates at high speed, the turbine rotates and presses fluid into the gap between the lining and jacket to form high pressure air spring or static liquid layer, extremely suppressing relative jumping and swinging of the lining and jacket, so as to extremely improve bearing operation stability and reliability. And it has characters of compact structure, high rigidity, large unit-volume bearing ability, high operating stability and wide use.
Description
Technical field
The present invention relates to a kind of magnetic suspension bearing, particularly a kind of permanent magnetism and turbine composite bearing.
Background technique
The rotating sleeve of magnetic suspension bearing and fixed cover rely on that magnetic force is relative to suspend, do not have when therefore working abrasion, noiseless, pollution-free, not transmitting vibrations, exempt to lubricate, non-maintaining, the life-span is long.
Magnetic suspension bearing has electromagnetic type, magneto, electromagnet and permanent magnet combined type, permanent magnetism and high temperature superconductor combined type.The magnetic force that electromagnetic type utilizes electric current to produce makes suspend relative with overcoat of interior cover of bearing.Electromagnetic type magnetic bearing structure complexity, and need the complicated circuit control system of configuration one cover just can make its interior cover running reach satisfied precision and stability.The electromagnet and permanent magnet combined type is equally also very complicated.Permanent magnetism and high temperature superconductor combined type magnetic bearing structure are more complicated, and manufacture cost is high.The permanent magnetism type magnetic suspension bearing only makes suspend relative with overcoat of interior cover of bearing with the magnetic force of permanent magnet, in general, the magneto suspension bearing is simple in structure with respect to foregoing alternate manner suspension bearing, and cost is low.Existing magneto is (perhaps axial) magnetic suspension bearing radially, structure is also fairly simple, but the existing permanent magnetism type magnetic suspension bearing that has radial and axial magnetic suspension function simultaneously, structure is complicated, per unit volume bearing capacity (ratio of bearing capacity value and bearing volume) is little, rigidity little (bearing capacity of bearing changes little with the space change of interior cover and overcoat), more discontented is because component manufacturing and assembly error are inevitable, poor stability when causing bearing to run up, be circular runout and axial runout severity, even pivoted housing can take place and fixed cover collides or scratches, so poor practicability is difficult to be applied to wide field.
Summary of the invention
The objective of the invention is to solve existing magnetic bearing structure complexity, the per unit volume bearing capacity is little, run stability is poor, use and problem such as limited to, designed a kind of permanent magnetism and turbine composite bearing, compact structure, rigidity are greatly, the per unit volume bearing capacity is big, run stability is high, purposes is wide.
The present invention is achieved through the following technical solutions:
The present invention is made up of interior cover and overcoat.Cover is provided with conical ring permanent magnet with putting outward in of the present invention, and tapering is identical, the equal radial magnetizing of conical ring permanent magnet, overcoat epicone annular permanent magnet with in put the conical ring permanent magnet radially to isolate a gap same polarity relative, interior cover (or overcoat) two ends are provided with a turbine respectively.
The present invention has the magnetic conduction axle sleeve of a supporting revolving shaft, a turbine is overlapped at its two ends respectively admittedly, admittedly overlap the outer cone annular permanent magnet of a plurality of radial magnetizings on the magnetic conduction sleeve outer circle, be called internal magnetic ring, the internal magnetic ring number is an even number, the big vertically end of internal magnetic ring is staggered mutually also in abutting connection with small end and polarity in abutting connection with big end, small end, the material of internal magnetic ring, performance parameter and measure-alike.Magnetic conduction axle sleeve, turbine, internal magnetic ring constitute interior cover of the present invention.
Outside the cylindrical of internal magnetic ring, leave the inner cone annular permanent magnet of uniform gap cover radial magnetizing, be called outer magnetic ring, its tapering is identical with the tapering of internal magnetic ring, its number equates with the number of internal magnetic ring, the big vertically end of outer magnetic ring is staggered mutually also in abutting connection with small end and polarity in abutting connection with big end, small end, outer magnetic ring after the assembling is relative with the internal magnetic ring same polarity diametrically, the material of outer magnetic ring, performance parameter and measure-alike.Tighten magnetic conduction cylinder of cover at the cylindrical of outer magnetic ring, its both ends of the surface respectively with assembling after the end face of outer magnetic ring.There is the non magnetic disk of bellmouth orifice at the affixed center of end face tube of being close to the outside end face of outer magnetic ring and magnetic conduction cylinder, the end diameter of its bellmouth orifice is identical with the mesopore minimum diameter size of outer magnetic ring, do not wipe when the Outside diameter size of bellmouth orifice is put into turbine and bump the loudspeaker hole wall and get final product, the cylindrical of non magnetic disk equates with the cylindrical of magnetic conduction cylinder.Outer magnetic ring, magnetic conduction cylinder, non magnetic disk have constituted overcoat of the present invention.
According to actual needs, internal magnetic ring can become the even number increase and decrease simultaneously with outer magnetic ring, and list at least respectively is two.
During assembling, interior cover and overcoat are compressed on request vertically, under cooling protection, take welding procedure that magnetic conduction cylinder and non magnetic disk are welded then, also can use Bolt Connection with the pressure frock.
Because described internal magnetic ring is in that radially to leave a gap same polarity relative with outer magnetic ring, and the material and the performance parameter of all internal magnetic rings and outer magnetic ring are identical, all internal magnetic rings measure-alike, all outer magnetic rings measure-alike, thereby on the inner conical surface of the male cone (strobilus masculinus) of each internal magnetic ring and each outer magnetic ring, produce radially magnetic repulsion and axial magnetic repulsion, and mutual diametrically magnetic repulsion equal and opposite in direction, the direction of internal magnetic ring and outer magnetic ring is opposite, axially too, thereby cover and be enclosed within outward radially, axially reach relative suspension in making and has stability.
The carrier of the interior interplanting supporting rotating shaft of described bearing, overcoat is as fixed cover; As if the turbine that puts in removing, design the hole and the nest of turbine and non magnetic disk in addition, turbine and non magnetic disk is affixed, and described interior cover also can be made the fixed cover of support fixation axle, and overcoat is as rotating sleeve, and the function of promptly interior cover, overcoat can be exchanged simultaneously.
If the rotating speed of supported rotating shaft is low in the practical application, beat and swing very for a short time, perhaps in vacuum environment, so, use the present invention need not dispose turbine, becomes pure permanent-magnet suspension bearing.
The effect that the present invention is useful is:
1. from overall structure: first, the main flux of per two adjacent outer cone annular permanent magnets is connected into semiclosed shape by the magnetic conduction axle sleeve in overlapping in of the present invention, the main flux of per two adjacent inner cone annular permanent magnets links to each other by the magnetic conduction cylinder and is connected into semiclosed shape in the overcoat, so leakage field is little, magnet utilization ratio height.Second, remove crack and turbine influent stream gap between the interior overcoat, there is not any space again, maximum permanent magnets has been assembled in the inner space of described bearing, be exactly not dispose turbine, become pure permanent-magnet suspension bearing, compare with the existing magnetic suspension bearing that has radial and axial bearing function simultaneously, the present invention is simple and compact for structure, and the per unit volume bearing capacity is big, rigidity is big; The configuration turbine, compare with the more existing magnetic suspension bearing that has radial and axial bearing function simultaneously, structure of the present invention is still simple, compare with existing other similar bearing, structure of the present invention is perhaps complicated, but the configuration turbine has improved the performance (seeing useful effect explanation 2) of magnetic suspension bearing widely, has widened its application area.The 3rd, forming component of the present invention is ring, disc, cylindrical shape, good manufacturability.
2. when overlapping (or overcoat) high speed rotating in the present invention, the turbine at two ends, the gap that fluid (not corroding the surface-treated metal and the fluid of permanent magnet: as air, inert gas, light water, the liquid wet goods) spinning of environment of living in is gone between interior cover and the overcoat forms high pressure air cushion or quiet liquid layer, greatly strengthened the relative suspending power of interior cover and overcoat, contained that greatly the relative of interior cover and overcoat beat, swing, the rotating speed of axle is high more, effect is good more, thereby has greatly improved stability, the reliability of bearing operation.
3. the present invention does not dispose turbine, and based on the actual application requirements, crack between cover, the overcoat in the design both can be used as single-acting shock absorber or damper and used, and can be used as multidirectional absorber or damper again and used.
Description of drawings
Fig. 1 is the structural representation of embodiment of the present invention 1;
Fig. 2 is the structural representation of embodiment of the present invention 2;
Fig. 3 is the structural representation of embodiment of the present invention 3.
Embodiment
Mode of execution 1: show that as Fig. 1 the outer conical ring internal magnetic ring 1,2,3,4 that fixed radial magnetizes on the magnetic conduction axle sleeve 7 of back shaft, internal magnetic ring 1,2,3,4 be the staggered assembling of joining of polarity successively vertically.Admittedly overlap a turbine 6 and 14 respectively at magnetic conduction axle sleeve 7 two ends, axle sleeve, turbine, internal magnetic ring have constituted interior cover of the present invention.
Outside the cylindrical of internal magnetic ring, leave a gap, inner cone (tapering is identical with the tapering of internal magnetic ring) the annular permanent magnet outer magnetic ring 9,10,11,12 of cover radial magnetizing, outer magnetic ring 9,10,11,12 is the staggered assembling of joining of polarity successively vertically, and radially same polarity is relative with internal magnetic ring to require outer magnetic ring.Tighten magnetic conduction cylinder 8 of cover at the cylindrical of outer magnetic ring, its both ends of the surface respectively with assembling after the end face of outer magnetic ring.There is the non magnetic disk 5 and 13 of bellmouth orifice at the affixed center of end face of being close to the outside end face of outer magnetic ring and magnetic conduction cylinder, the end diameter of its bellmouth orifice is identical with the mesopore minimum diameter size of outer magnetic ring, do not wipe when the Outside diameter size of bellmouth orifice is put into turbine 6 and 14 and bump the loudspeaker hole wall, non magnetic disk 5 and 13 cylindrical equate with the cylindrical of magnetic conduction cylinder 8.Outer magnetic ring, magnetic conduction cylinder, non magnetic disk have constituted overcoat of the present invention.
During assembling, interior cover and overcoat are compressed on request vertically, under cooling protection, take welding procedure that magnetic conduction cylinder 8 and non magnetic disk 5 and 13 are welded then, also can use Bolt Connection with the pressure frock.
Because described internal magnetic ring is in that radially to leave a gap same polarity relative with outer magnetic ring, and the material and the performance parameter of all internal magnetic rings and outer magnetic ring are identical, all internal magnetic rings measure-alike, all outer magnetic rings measure-alike, thereby on the inner conical surface of the male cone (strobilus masculinus) of each internal magnetic ring and each outer magnetic ring, produce radially magnetic repulsion and axial magnetic repulsion, and mutual diametrically magnetic repulsion equal and opposite in direction, the direction of internal magnetic ring and outer magnetic ring is opposite, axially too, thereby interior cover be enclosed within outward radially, axially reach relative suspension, and have stability.
During described bearing inner sleeve high speed rotating, the turbine at two ends, the gap that fluid (not corroding the surface-treated metal and the fluid of permanent magnet: as air, inert gas, light water, the liquid wet goods) spinning of environment of living in is gone between interior cover and the overcoat forms high pressure air cushion or quiet liquid layer, greatly strengthened the relative suspending power of interior cover and overcoat, contained that greatly the relative of interior cover and overcoat beat, swing, the rotating speed of axle is high more, effect is good more, thereby has greatly improved stability, the reliability of bearing operation.
Mode of execution 2: when needs overcoat of the present invention rotates, and when interior cover is fixed, show as Fig. 2, concentrating flux sleeve 16, non magnetic disk 17 and 19, turbine 15 and 18 shown in magnetic conduction axle sleeve 7 in the mode of execution 1, non-magnetic disk 5 and 13, turbine 6 and 14 corresponding Fig. 2 of making into are shown, and make turbine 15 and 18 affixed with non magnetic disk 19 and 17 respectively, make the interior circle of turbine 15 and 18 and the cylindrical of axle sleeve 19 isolate a gap.
Mode of execution 3: if the rotating speed of supported rotating shaft is low in the practical application, beats and swing very for a short time, perhaps in vacuum environment, so, use mode of execution 1 or 2 described bearings need not dispose turbine, become pure permanent-magnet suspension bearing.Show magnetic conduction axle sleeve 20, the non magnetic disk 21 and 22 shown in the magnetic conduction axle sleeve 7 in the mode of execution 1, non magnetic disk 5 and 14 corresponding Fig. 3 of making into are shown as Fig. 3.
Mode of execution 4: in above each mode of execution, the quantity changeable of internal magnetic ring, outer magnetic ring.
Claims (7)
1. permanent magnetism and turbine composite bearing, it is characterized in that: this bearing is made up of interior cover and overcoat, interior cover is provided with conical ring permanent magnet with putting outward, and tapering is identical, the equal radial magnetizing of conical ring permanent magnet, overcoat epicone annular permanent magnet with in put the conical ring permanent magnet radially to isolate a gap same polarity relative, described in cover or overcoat two ends a turbine is set respectively.
2. permanent magnetism according to claim 1 and turbine composite bearing, it is characterized in that: the magnetic conduction axle sleeve that a supporting revolving shaft is arranged, a described turbine is overlapped at its two ends respectively admittedly, admittedly overlap the outer cone annular permanent magnet of a plurality of radial magnetizings on the magnetic conduction sleeve outer circle, be called internal magnetic ring, the internal magnetic ring number is an even number, the big vertically end of internal magnetic ring is staggered mutually also in abutting connection with small end and polarity in abutting connection with big end, small end, the material of internal magnetic ring, performance parameter and measure-alike, magnetic conduction axle sleeve, turbine, internal magnetic ring constitute the interior cover of described bearing.
3. permanent magnetism according to claim 1 and turbine composite bearing, it is characterized in that: the inner cone annular permanent magnet that outside the cylindrical of internal magnetic ring, leaves gap cover radial magnetizing, be called outer magnetic ring, its tapering is identical with the tapering of internal magnetic ring, its number equates with the number of internal magnetic ring, the big vertically end of outer magnetic ring is staggered mutually also in abutting connection with small end and polarity in abutting connection with big end, small end, and the outer magnetic ring after the assembling is relative with the internal magnetic ring same polarity diametrically, the material of outer magnetic ring, performance parameter and measure-alike; Magnetic conduction cylinder of cover on the cylindrical of outer magnetic ring, its both ends of the surface respectively with assembling after the end face of outer magnetic ring; There is the non magnetic disk of bellmouth orifice at the affixed center of end face of being close to the outside end face of outer magnetic ring and magnetic conduction cylinder, the end diameter of its bellmouth orifice is identical with the mesopore minimum diameter size of outer magnetic ring, do not wipe when the Outside diameter size of bellmouth orifice is put into turbine and bump the loudspeaker hole wall and get final product, the cylindrical of non magnetic disk is identical with the cylindrical of magnetic conduction cylinder; Outer magnetic ring, magnetic conduction cylinder, non magnetic disk have constituted the overcoat of described bearing.
4. permanent magnetism according to claim 1 and turbine composite bearing is characterized in that: the carrier of the interior interplanting supporting rotating shaft of described bearing, and overcoat is as fixed cover; As if the turbine that puts in removing, design the hole and the nest of turbine and non magnetic disk in addition, turbine and non magnetic disk is affixed, and described interior cover also can be made the fixed cover of support fixation axle, and overcoat is as rotating sleeve, and the function of promptly interior cover, overcoat can be exchanged simultaneously.
5. permanent magnetism according to claim 1 and turbine composite bearing is characterized in that: using in some cases, can not dispose turbine.
6. permanent magnetism according to claim 1 and turbine composite bearing is characterized in that: according to actual needs, and the quantity changeable of internal magnetic ring, outer magnetic ring.
7. permanent magnetism according to claim 1 and turbine composite bearing is characterized in that: do not dispose turbine, can be used as unidirectional or multidirectional absorber, also can be used as unidirectional or multidirectional damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101376544A CN100441891C (en) | 2006-11-02 | 2006-11-02 | Permanent magnetism and turbine composite bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101376544A CN100441891C (en) | 2006-11-02 | 2006-11-02 | Permanent magnetism and turbine composite bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101000068A true CN101000068A (en) | 2007-07-18 |
| CN100441891C CN100441891C (en) | 2008-12-10 |
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ID=38692160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101376544A Expired - Fee Related CN100441891C (en) | 2006-11-02 | 2006-11-02 | Permanent magnetism and turbine composite bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100441891C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825140A (en) * | 2010-05-21 | 2010-09-08 | 江苏大学 | Permanent magnet suspension bearing |
| CN102374233A (en) * | 2010-08-17 | 2012-03-14 | 刘新广 | Permanent-magnetic electric suspension bearing |
| CN101571161B (en) * | 2008-05-04 | 2012-08-01 | 刘新广 | Magnetic sliding bearing |
| CN101619746B (en) * | 2008-07-02 | 2012-09-12 | 刘新广 | Nonequilibrium magnetic sliding bearing |
| CN103016526A (en) * | 2012-12-28 | 2013-04-03 | 贵州新天地设备有限公司 | Bearing bush type magnetic levitation supporting mechanism and ball-milling device |
| CN103133531A (en) * | 2012-12-28 | 2013-06-05 | 贵州新天地设备有限公司 | Bearing type magnetic suspension bearing mechanism and ball-milling equipment |
| CN112727922A (en) * | 2020-12-24 | 2021-04-30 | 北华航天工业学院 | Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03213717A (en) * | 1990-01-16 | 1991-09-19 | Seiko Electronic Components Ltd | Magnetic bearing |
| JP2000161359A (en) * | 1998-11-30 | 2000-06-13 | Sanyo Denki Co Ltd | Supporting structure of rotary member |
| CN1570409A (en) * | 2003-07-16 | 2005-01-26 | 黄克玉 | Magnetic suspension bearing |
| CN1651779A (en) * | 2004-02-03 | 2005-08-10 | 柯寅昌 | Magnetic suspension bearing |
-
2006
- 2006-11-02 CN CNB2006101376544A patent/CN100441891C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571161B (en) * | 2008-05-04 | 2012-08-01 | 刘新广 | Magnetic sliding bearing |
| CN101619746B (en) * | 2008-07-02 | 2012-09-12 | 刘新广 | Nonequilibrium magnetic sliding bearing |
| CN101825140A (en) * | 2010-05-21 | 2010-09-08 | 江苏大学 | Permanent magnet suspension bearing |
| CN102374233A (en) * | 2010-08-17 | 2012-03-14 | 刘新广 | Permanent-magnetic electric suspension bearing |
| CN103016526A (en) * | 2012-12-28 | 2013-04-03 | 贵州新天地设备有限公司 | Bearing bush type magnetic levitation supporting mechanism and ball-milling device |
| CN103133531A (en) * | 2012-12-28 | 2013-06-05 | 贵州新天地设备有限公司 | Bearing type magnetic suspension bearing mechanism and ball-milling equipment |
| CN112727922A (en) * | 2020-12-24 | 2021-04-30 | 北华航天工业学院 | Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100441891C (en) | 2008-12-10 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20091202 |