CN101825140A - Permanent magnet suspension bearing - Google Patents
Permanent magnet suspension bearing Download PDFInfo
- Publication number
- CN101825140A CN101825140A CN201010180081A CN201010180081A CN101825140A CN 101825140 A CN101825140 A CN 101825140A CN 201010180081 A CN201010180081 A CN 201010180081A CN 201010180081 A CN201010180081 A CN 201010180081A CN 101825140 A CN101825140 A CN 101825140A
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- China
- Prior art keywords
- permanent magnet
- ring
- shaped permanent
- pair
- stator ring
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0429—Passive magnetic bearings with permanent magnets on both parts repelling each other for both radial and axial load, e.g. conical magnets
Abstract
The invention discloses a permanent magnet suspension bearing, which consists of a stator ring-shaped permanent magnet, another stator ring-shaped permanent magnet, a pair of rotor ring-shaped permanent magnets and a concentrating flux disc which are coaxial, wherein the stator ring-shaped permanent magnet and another stator ring-shaped permanent magnet are positioned at an outer ring, and the pair of rotor ring-shaped permanent magnets are positioned at an inner ring, are parallel from top to bottom and symmetrically and fixedly connected with the concentrating flux disc; the inner side surfaces of the two stator ring-shaped permanent magnets are respectively provided with an inclined plane from top to bottom by taking the concentrating flux disc as symmetry, the outer walls of the pair of rotor ring-shaped permanent magnets are respectively provided with the other inclined plane from top to bottom by taking the concentrating flux disc as symmetry, and the inclined planes and inclined planes correspond mutually and gaps are left among the inclined planes; and the two stator ring-shaped permanent magnets and the pair of rotor ring-shaped permanent magnets are axially magnetized and the directions of the magnetic poles thereof are opposite. The rotor has the function of radial and axial suspension, so the permanent magnet suspension bearing can completely replace a mechanical bearing, avoid the friction and abrasion of the mechanical bearing, reduce the vibration and noise of the rotors, prolong the service life of mechanical products and improve the performance of the mechanical products.
Description
Technical field
The present invention relates to the bearing mechanical parts, relate in particular to permanent-magnet suspension bearing, be used for the suspension of rotary machine rotor.
Background technique
At present, permanent-magnet suspension bearing has radial and axial two kinds, and its structure is: the radial suspension bearing is made up of two magnet rings that vary in size, bead is enclosed within the big magnet ring, and two ring length are the same, all axial charging, direction is identical, and the repulsion between two rings produces radial force, reaches the effect of radial suspension; The axial suspension bearing is made up of the identical magnet ring of size, about or coaxial up and down concentric arrangement, all axial charging and direction are opposite, the repulsion between two rings produces axial force, plays the effect of axial suspension.
The defective of above-mentioned radial and axial permanent-magnet suspension bearing is: can only realize respectively radially or axial suspension that reason is that the axial suspension bearing does not have radially buoyancy, the radial suspension bearing does not have axial buoyancy.
Summary of the invention
The purpose of this invention is to provide a kind of permanent-magnet suspension bearing in the radial and axial function that can realize simultaneously suspending.
The technical solution used in the present invention is: by a stator ring permanent magnet that is positioned at the outer ring, another stator ring permanent magnet, be positioned at a pair of rotor annular permanent magnet of inner ring and the magnetic conduction disk is coaxial forms; A pair of rotor annular permanent magnet is parallel and symmetrical fixedly connected magnetic conduction disk up and down; On two stator ring permanent magnet inner side surfaces with the magnetic conduction disk for an inclined-plane respectively is set up and down symmetrically, on a pair of rotor annular permanent magnet outer wall with the magnetic conduction disk for another inclined-plane respectively is set up and down symmetrically, the inclined-plane corresponding mutually with the inclined-plane and between have the gap; Two stator ring permanent magnets are opposite with equal axial charging of a pair of rotor annular permanent magnet and pole orientation.
Advantage of the present invention is: it is difunctional that rotor has radial and axial suspension, can replace mechanical bearing fully, avoids the friction and wear of mechanical bearing, reduces the vibration and the noise of rotor, improves the life-span and the performance of engineering goods.
Description of drawings
Fig. 1 is the plan view of permanent-magnet suspension bearing.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the enlarged view of partial structurtes E among Fig. 1.
Among the figure: 1. rotating shaft; 2. stator ring permanent magnet; 3. rotor annular permanent magnet; 4. stator ring permanent magnet; 5. inclined-plane; 6. inclined-plane; 7. magnetic conduction disk.
Embodiment
Shown in Fig. 1-2, the present invention is by a stator ring permanent magnet 2 that is positioned at the outer ring, another stator ring permanent magnet 4, a pair of rotor annular permanent magnet 3 that is positioned at inner ring and 7 coaxial compositions of magnetic conduction disk.A pair of rotor annular permanent magnet is parallel and symmetrical being fixedly connected on the magnetic conduction disk 7 about in the of 3, rotor annular permanent magnet 3 outer wall and the stator ring permanent magnet 2 on top have the gap, and another rotor annular permanent magnet 3 outer walls and another stator ring permanent magnet 4 of bottom have the gap.Magnetic conduction disk 7 extends a rotating shaft 1 on the position of rotation central axis.
As shown in Figure 3, on the inner side surface of stator ring permanent magnet 2 and 4, be symmetry, up and down an inclined-plane 5 be set respectively with magnetic conduction disk 7.On a pair of rotor annular permanent magnet 3 outer walls, be symmetry, up and down another inclined-plane 6 be set respectively with magnetic conduction disk 7, inclined-plane 6 and inclined-plane 5 is corresponding mutually, have between inclined-plane 6 and the inclined-plane 5 stator ring permanent magnet 2 and 4 and a pair of rotor annular permanent magnet 3 between the gap.Stator ring permanent magnet 2 and 4 and a pair of rotor annular permanent magnet 3 equal axial chargings, and pole orientation is opposite, sees shown in the arrow among Fig. 3; Like this, inclined-plane 6 and the inclined-plane 5 relative and mutual repulsion that produce perpendicular to two inclined-planes that repel, the reason that energy produces perpendicular to the repulsion on two inclined-planes is: certain some A should have an effect with certain the some C on the inclined-plane 5 along magnetizing direction on the inclined-plane 6, but because magnetic strength and square distance are inversely proportional to, and more than one but do not have several of the A magnetic line of force of ordering, the magnetic line of force direction that A is ordered is the shape of scattering, because the B point on A point and the inclined-plane 5 is nearest, magnetic repulsion is the strongest between A, B; Magnetic repulsion is the strongest between the D point on same C point and the inclined-plane 6, thereby occupy an leading position perpendicular to the repulsion on inclined- plane 5,6 everywhere, just produce repulsion perpendicular to two inclined- planes 5,6, be decomposed into axially and radially component perpendicular to the repulsion on two inclined- planes 5,6, axially and component radially a pair of rotor annular permanent magnet 3 is suspended in the middle of stator ring permanent magnet 2 and 4.
The present invention is as long as regulate distance between inclined-plane 6 and the inclined-plane 5 with regard to the size of adjustable bearings power, distance more greatly, bearing is littler; Otherwise distance is littler, and bearing is bigger, and reason is that the square distance between magnetic force and the magnet is inversely proportional to.Gap between two inclined- planes 5,6 is generally all several to several millimeters at zero point, and buoyancy size is according to actual needs selected.Angle between the rotation central axis line of design inclined- plane 5,6 and rotating shaft 1, with regard to the size of the radial and axial component of can regulate, angle is bigger, and axial thrust load is bigger, and radial component is just little; Otherwise angle is littler, and axial thrust load is littler, and radial component is just bigger.Reason is that radial component is the sine of repulsion between two inclined- planes 5,6, and axial thrust load is the cosine of this repulsion.This angle can from 0 to 90 degree change, 0 becomes existing traditional radial bearing when spending, 90 become existing traditional cod when spending.
When the present invention uses, rotating shaft 1, magnetic conduction disk 7 and a pair of rotor annular permanent magnet 3 coaxial rotations, rotor annular permanent magnet 3 can stably reach balance at six-freedom degree when rotating speed is enough big.
Claims (2)
1. permanent-magnet suspension bearing is characterized in that: this permanent-magnet suspension bearing is by a stator ring permanent magnet (2) that is positioned at the outer ring, another stator ring permanent magnet (4), a pair of rotor annular permanent magnet (3) that is positioned at inner ring and magnetic conduction disk (7) coaxial composition; The parallel up and down and symmetrical fixedly connected magnetic conduction disk of a pair of rotor annular permanent magnet (3) (7); On two stator ring permanent magnets (2,4) inner side surface with magnetic conduction disk (7) for an inclined-plane (5) respectively is set up and down symmetrically, on a pair of rotor annular permanent magnet (3) outer wall with magnetic conduction disk (7) for another inclined-plane (6) respectively is set up and down symmetrically, an inclined-plane (6) corresponding mutually with another inclined-plane (6) and between have the gap; Two stator ring permanent magnets (2,4) are opposite with equal axial charging of a pair of rotor annular permanent magnet (3) and pole orientation.
2. a kind of permanent-magnet suspension bearing according to claim 1 is characterized in that: described magnetic conduction disk (7) is extended with a rotating shaft (1) on the position of rotation central axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010180081A CN101825140A (en) | 2010-05-21 | 2010-05-21 | Permanent magnet suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010180081A CN101825140A (en) | 2010-05-21 | 2010-05-21 | Permanent magnet suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101825140A true CN101825140A (en) | 2010-09-08 |
Family
ID=42689241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010180081A Pending CN101825140A (en) | 2010-05-21 | 2010-05-21 | Permanent magnet suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101825140A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2491825A (en) * | 2011-06-10 | 2012-12-19 | William Brian Turner | A permanent magnet combined journal and thrust bearing for a large shaft |
| CN105352466A (en) * | 2015-12-14 | 2016-02-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial displacement detection device and method and magnetic suspension bearing |
| CN106763183A (en) * | 2017-01-12 | 2017-05-31 | 陈科枫 | Permanent-magnet suspension bearing based on gyroscopic effect |
| CN106949143A (en) * | 2017-04-06 | 2017-07-14 | 北京石油化工学院 | A kind of implicit Lorentz force axial magnetic bearing of the poly- magnetic effect of V-arrangement |
| CN106969034A (en) * | 2017-05-27 | 2017-07-21 | 深圳智慧能源技术有限公司 | Permanent magnetism type magnetic suspension bearing |
| CN109058297A (en) * | 2018-10-11 | 2018-12-21 | 安徽威能电机有限公司 | Suspension permanent magnetic bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03213717A (en) * | 1990-01-16 | 1991-09-19 | Seiko Electronic Components Ltd | Magnetic bearing |
| JPH04285315A (en) * | 1991-03-15 | 1992-10-09 | Seiko Electronic Components Ltd | Magnetic bearing |
| JPH05172145A (en) * | 1991-12-26 | 1993-07-09 | Ntn Corp | Super-conductive magnetic bearing device |
| US6617732B1 (en) * | 1999-12-10 | 2003-09-09 | Delta Electronics, Inc. | Magnetic bearing structure |
| CN101000068A (en) * | 2006-11-02 | 2007-07-18 | 刘新广 | Permanent magnetism and turbine composite bearing |
-
2010
- 2010-05-21 CN CN201010180081A patent/CN101825140A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03213717A (en) * | 1990-01-16 | 1991-09-19 | Seiko Electronic Components Ltd | Magnetic bearing |
| JPH04285315A (en) * | 1991-03-15 | 1992-10-09 | Seiko Electronic Components Ltd | Magnetic bearing |
| JPH05172145A (en) * | 1991-12-26 | 1993-07-09 | Ntn Corp | Super-conductive magnetic bearing device |
| US6617732B1 (en) * | 1999-12-10 | 2003-09-09 | Delta Electronics, Inc. | Magnetic bearing structure |
| CN101000068A (en) * | 2006-11-02 | 2007-07-18 | 刘新广 | Permanent magnetism and turbine composite bearing |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2491825A (en) * | 2011-06-10 | 2012-12-19 | William Brian Turner | A permanent magnet combined journal and thrust bearing for a large shaft |
| CN105352466A (en) * | 2015-12-14 | 2016-02-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial displacement detection device and method and magnetic suspension bearing |
| CN105352466B (en) * | 2015-12-14 | 2018-03-20 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of device for detecting axial displacement, method and magnetic suspension bearing |
| CN106763183A (en) * | 2017-01-12 | 2017-05-31 | 陈科枫 | Permanent-magnet suspension bearing based on gyroscopic effect |
| CN106949143A (en) * | 2017-04-06 | 2017-07-14 | 北京石油化工学院 | A kind of implicit Lorentz force axial magnetic bearing of the poly- magnetic effect of V-arrangement |
| CN106969034A (en) * | 2017-05-27 | 2017-07-21 | 深圳智慧能源技术有限公司 | Permanent magnetism type magnetic suspension bearing |
| CN109058297A (en) * | 2018-10-11 | 2018-12-21 | 安徽威能电机有限公司 | Suspension permanent magnetic bearing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100908 |