CN108361280A - Permanent magnetism magnetic suspension bearing - Google Patents
Permanent magnetism magnetic suspension bearing Download PDFInfo
- Publication number
- CN108361280A CN108361280A CN201810412945.2A CN201810412945A CN108361280A CN 108361280 A CN108361280 A CN 108361280A CN 201810412945 A CN201810412945 A CN 201810412945A CN 108361280 A CN108361280 A CN 108361280A
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- CN
- China
- Prior art keywords
- magnetic
- stator
- suspension bearing
- magnetic pole
- permanent magnetism
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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
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The present invention is mainly by the same pole opposing compression of two pieces of permanent magnetic irons to small distance, original magnetic flux area is set to reduce, magnetic induction intensity thus is improved, then by one piece of special magnetizer of folder lining between two blocks of magnet, the magnetic line of force is made to exhale the floating magnetic source of magnetic for being used as stator with magnetizer；It again using an oblong magnetic pole as rotor, and is squeezed in such a way that homopolarity is opposite respectively at its both ends and another short round magnetic pole is installed, to improve the magnetic induction intensity at the oblong magnetic pole both ends as rotor, and configure axial limiter.Using the permanent magnetism magnetic suspension bearing of the strengthened stator of magnetic force and rotor engagement composition, load-bearing capacity and radially, axially stability can be increased.
Description
Technical field
The present invention relates to technical field of bearings, specifically a kind of full permanent magnetism magnetic suspension simple in structure, stability is strong
Bearing.
Background technology
Magnetic suspension bearing be using the magneticaction that identical charges repel each other by rotor suspension in stator, make between rotor and stator
There is no Mechanical Contact.Therefore mechanical wear is not present, with low energy consumption, generate heat less, noise is small, long lifespan, is not necessarily to lubrication, oil-free
The advantages that pollution.Magnetic suspension bearing can be divided into active, passive type and combined type by suspended pattern.Active and combined magnetic
The magnetic field of suspension bearing is mainly provided by electromagnet, and system includes sensor, control circuit etc., complicated, operating cost is high.
Passive type magnetic suspension bearing uses permanent magnet to provide suspending power completely, has many advantages, such as simple in structure, reliable for operation, long lifespan.
But the magnetic force of permanent magnetism magnetic suspension bearing is relatively low, when by larger radial force effect, will produce larger radial deflection, shadow
The stability and running accuracy when using are rung, and load-bearing capacity is also limited by magnetic force.
Invention content
It is an object of the invention to：
Magnetic induction intensity is also known as magnetic flux density, it indicate pass perpendicularly through unit area the magnetic line of force number.Magnetic flux density from
Reflect the density degree of the magnetic line of force or the power in magnetic field in quantity, where the magnetic line of force is closeer, and where magnetic field is stronger.Therefore, I
Can improve magnetic induction intensity in a manner of reducing magnetic flux area in the case where the magnetic line of force is constant.
Principles above is applied on the stator of bearing and rotor respectively, design the stator that can increase magnetic induction intensity and is turned
Son, come the load-bearing capacity for increasing magnetic suspension bearing and radial stability.
The object of the present invention is achieved like this：
In the present invention：The stator part of magnetic suspension bearing is achieved in that two block length side's stereo magnetic irons, and magnetic surface is added to exist
Larger two sides adds magnetic, is on one side the poles S for the poles N another side.In a manner of homopolar-repulsion, the poles S extremely extremely opposite with respect to the poles N or S N
It is adjacent to each other, it is mutually squeezed in the case where fighting repulsive force.The magnetic line of force quantity of two blocks of magnet will not become at this time, but two pieces
Magnetic flux area between magnet becomes smaller, therefore is equivalent to the magnetic line of force passed through in unit magnetic flux area and increases, that is, institute
Meaning magnetic induction intensity strengthens.When two blocks of magnet are sufficiently close together, because the effect of repulsive force can be highly unstable, therefore at two pieces
One piece of special magnetizer of folder lining between magnet forms a magnetic group, and special magnetizer is that rectangular slab-like is three-dimensional, three sides with it is rectangular
Stereo magnetic iron is concordant, protrudes and slightly expands outwardly on one side, is in arc curved surface at top, forms permanent-magnet stator magnetic pole cambered surface.It will determine
Sub- magnetic group flush segments periphery is fixed with stainless steel casing with rivet, and magnetic pole cambered surface is only exposed, and forms a permanent magnetism magnetic suspension axis
Hold stator component.
In the present invention：With the magnetic pole cambered surface of the stator component of 4 poles N, it is surrounded by a circle towards the same center of circle, is made in circle
Surrounding is filled with N pole fields, is fixed and just constitutes the stator that N polar axis is held, and can do a S polar axis again in the same fashion and hold it
Stator.
In the present invention：The rotor part of magnetic suspension bearing is achieved in that with an oblong magnetic pole as rotor
Shaft, it is the poles S that one end of oblong magnetic pole, which is the poles the N other end, in addition, in order to which the magnetic induction for reinforcing oblong magnetic pole both ends is strong
One section short round magnetic pole, the diameter and oblong magnetic pole of short circle magnetic pole is respectively arranged at the both ends of oblong magnetic pole in degree again respectively
Identical, length is then shorter, and one end is that the poles the N other end is the poles S, and mounting means is opposite with homopolarity with oblong magnetic pole, and N is extremely right
It answers the poles N, S extremely to correspond to the direction of the poles S, and a piece of round magnetizer is set therebetween, by round magnetic conduction in a manner of extruding
Body clamping is mounted in stainless pipe.At this time oblong magnetic pole with short round magnetic pole because mutual homopolarity squeezes, therebetween
Round magnetizer on form high magnetic region, this area be magnetic suspension bearing assembling when rotor region corresponding with stator, because of magnetic
It is extremely identical, repulsive force is will produce, thus generate magnetic and float effect.
In the present invention：Oblong magnetic pole is equipped with radial flange close at both ends, because magnetic pole is also identical as stator, via
The repulsive force of the two, axial limiter when can be as rotor motion, collectively constitutes the rotor assembly of permanent magnetism magnetic suspension bearing.
In the present invention：By rotor assembly both ends circle magnetizer position according to the corresponding mode of homopolarity, it is fixed to be inserted into permanent magnetism
The circular space that four permanent-magnet stator magnetic pole cambered surfaces are formed in sub- assembly constitutes permanent magnetism magnetic suspension bearing of the present invention.
The advantage of the invention is that：1. the magnetic induction intensity of stronger stator and rotor can be formed, thus can carry
Heavier load and resistance radial direction and axial dipole field.2. utilizing permanent magnetism, simple structure, failure rate is low.3. manufacture be easy, cost compared with
It is low, it is easy to the marketization.
Description of the drawings
Fig. 1 is the structural decomposition diagram of stator of the present invention
Fig. 2 is the structural profile illustration of rotor of the present invention
Fig. 3 is fragmentary sectional schematic diagram of the present invention
Wherein indicate：1, rectangular stereo magnetic iron；2, stator magnetizer；3, magnetic pole of the stator cambered surface；4, stainless steel casing；5, magnetic assembles
Distribution；6, shell pilot hole；7, rivet；8, stator component；9, stator fixing piece；10, field frame assembly；11, oblong magnetic pole；
12, short round magnetic pole；13, round magnetizer；14, stainless pipe；15, axial limiter；16, rotor assembly.
Specific implementation mode
Attached drawing discloses the concrete structure of embodiments of the present invention without limitation, below in conjunction with the accompanying drawings to the present invention make into
Describe to one step.
As shown in Figure 1, stator body of the present invention includes rectangular stereo magnetic iron 1, stator magnetizer 2, stainless steel casing 4.It is long
Square stereo magnetic iron 1 is to add magnetic on maximum surface, is on one side the poles S for the poles N another side.Stator magnetizer 2 is vertical for rectangular slab-like
Body, size shape is front and back and three face of bottom is flushed with rectangular stereo magnetic iron 1, and the more rectangular stereo magnetic iron 1 of height is high, the raised area
It slightly expands outwardly, and is in arc curved surface at top, form magnetic pole of the stator cambered surface 3, two sides center is provided with magnetic before and after stator magnetizer 2
Group pilot hole 5.There are shell pilot hole 6, the magnetic group of size position and stator magnetizer 2 in two sides center before and after stainless steel casing 4
Pilot hole 5 is consistent.
When combined stator, first by two block length side's stereo magnetic irons 1 in a manner of the extremely opposite poles N N, with special tool(s) squeeze to
Small distance is clipped in 2 both sides of stator magnetizer, forms magnetic group, then the stainless guiding principle shell 4 that size is coincide is sleeved in magnetic group, this
When stator magnetizer 2 on magnetic group pilot hole 5 be just aligned with the shell pilot hole 6 on stainless steel casing 4, finally surface is pressed
Colored rivet 7 hammers into pilot hole and fixes, and just completes stator component 8 of the present invention.
The magnetic pole of the stator cambered surface 3 of four stator components 8 is surrounded into circle relatively, bottom is separately fixed at square framework type
9 inside of stator fixing piece, four sides, just complete the assembly of field frame assembly 10.
As shown in Fig. 2, rotor subject of the present invention includes oblong magnetic pole 11, short round magnetic pole 12, round magnetizer 13.Group
When closing rotor, long one round magnetic pole 11 is squeezed mutually in such a way that homopolarity is opposite to small distance with short round magnetic pole 12, it will
Round magnetizer 13 is clamped in centre, then covers and sealed with stainless pipe 14, then is fitted on the inside of 11 both ends of oblong magnetic pole
Work as position, welding annulus sheet magnetizer just constitutes rotor assembly 16 as axial limiter 15.
When practical application, it is only necessary to which by 16 both ends of rotor assembly, point poles N processed are inserted between the poles N field frame assembly 10, S is inserted into the poles S
Between the field frame assembly of pole, then by field frame assembly 10 fix.Due to 16 both ends of rotor assembly axial limiter 15 with it is corresponding
3 homopolarity of magnetic pole of the stator cambered surface can play the effect of axial limiting under the action of repulsive force.16 liang of rotor assembly at this time
Also because with 3 homopolarity of magnetic pole of the stator cambered surface, it is floating to generate magnetic in the stator at end, can free friction-free rotary, can also hold
Load with lotus.
Claims (6)
1. a kind of permanent magnetism magnetic suspension bearing, including permanent-magnet stator assembly and p-m rotor assembly.
2. according to a kind of permanent magnetism magnetic suspension bearing described in claims 1, it is characterised in that：Permanent-magnet stator assembly is by two block lengths
Square stereo magnetic iron is added magnetic on larger two sides, is mutually squeezed in a manner of homopolar-repulsion, and one piece of the folder lining between two blocks of magnet
Stator magnetizer forms a stator magnet group.
3. according to a kind of permanent magnetism magnetic suspension bearing described in claims 2, it is characterised in that：Stator magnetizer is rectangular slab-like
Solid, three sides are concordant with rectangular stereo magnetic iron, protrude and slightly expand outwardly on one side, are in arc curved surface at top, form stator magnet
Polar arc face.
4. according to a kind of permanent magnetism magnetic suspension bearing described in claims 2, it is characterised in that：Stator magnet group stainless steel casing with
Rivet is fixed, and a magnetic suspension bearing stator component is formed, and the magnetic pole of the stator cambered surface of four stator components is opposite, bottom difference
Four sides on the inside of square frame are fixed on, permanent-magnet stator assembly is completed.
5. according to a kind of permanent magnetism magnetic suspension bearing described in claims 1, it is characterised in that：P-m rotor assembly is long with one
For round magnetic pole as the shaft of rotor, one end is that the poles the N other end is the poles S, in each setting one again respectively of the both ends of oblong magnetic pole
The short round magnetic pole of section, one end is that the poles the N other end is the poles S, and mounting means is opposite with homopolarity with oblong magnetic pole, and in the two
Between a piece of round magnetizer is set, the clamping of round magnetizer is mounted in stainless pipe in a manner of extruding, oblong
Magnetic pole collectively constitutes p-m rotor assembly equipped with radial flange close at both ends as the axial limiter of rotor.
6. according to a kind of permanent magnetism magnetic suspension bearing of claims 4 and 5, it is characterised in that：By p-m rotor assembly both ends
It is empty to be inserted into the circle that four magnetic pole cambered surfaces in permanent-magnet stator assembly are formed according to the corresponding mode of homopolarity for round magnetic conduction body region
Between, form permanent magnetism magnetic suspension bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412945.2A CN108361280A (en) | 2018-05-03 | 2018-05-03 | Permanent magnetism magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412945.2A CN108361280A (en) | 2018-05-03 | 2018-05-03 | Permanent magnetism magnetic suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108361280A true CN108361280A (en) | 2018-08-03 |
Family
ID=63011550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810412945.2A Pending CN108361280A (en) | 2018-05-03 | 2018-05-03 | Permanent magnetism magnetic suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108361280A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4128280A (en) * | 1977-01-17 | 1978-12-05 | Sulzer Brothers Limited | Self-pressurizing floating gas bearing having a magnetic bearing therein |
| JPH10131966A (en) * | 1996-10-30 | 1998-05-22 | Ebara Corp | Magnetic bearing device |
| CN2597738Y (en) * | 2002-12-11 | 2004-01-07 | 中国科学院电工研究所 | Hybrid magnetic suspension bearing |
| JP2006217744A (en) * | 2005-02-04 | 2006-08-17 | Nippon Keiki Works Ltd | Bearing structure of motor using permanent magnet |
| KR100873662B1 (en) * | 2007-07-13 | 2008-12-12 | 한국기계연구원 | Supporter of shaft using permanent magnet |
| CN101799045A (en) * | 2009-02-06 | 2010-08-11 | 卓向东 | Anti-offcenter magnetic suspension bearing |
| CN101994760A (en) * | 2009-08-12 | 2011-03-30 | 卓向东 | Interference wave extrusion type magnetic suspension bearing |
| CN102338159A (en) * | 2010-07-16 | 2012-02-01 | 卓向东 | Magnetic suspension bearing with magnetic repulsion suspension and interference wave radial suspension structures |
| US20130216351A1 (en) * | 2011-08-24 | 2013-08-22 | Dresser-Rand Company | Magnetically-coupled damper for turbomachinery |
| CN104295603A (en) * | 2013-07-15 | 2015-01-21 | 卓向东 | Permanent magnet thrust bearing and vertical magnetic levitation motor |
| CN104930056A (en) * | 2014-03-18 | 2015-09-23 | 卓向东 | Magnetic suspension bearing with radial and axial suspension functions |
| CN205190530U (en) * | 2015-12-04 | 2016-04-27 | 天津奥展兴达化工技术有限公司 | No fulcrum, zero friction permanent magnetism suspension bearing |
| CN208619522U (en) * | 2018-05-03 | 2019-03-19 | 南京高明环保科技有限公司 | Permanent magnetism magnetic suspension bearing |
-
2018
- 2018-05-03 CN CN201810412945.2A patent/CN108361280A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4128280A (en) * | 1977-01-17 | 1978-12-05 | Sulzer Brothers Limited | Self-pressurizing floating gas bearing having a magnetic bearing therein |
| JPH10131966A (en) * | 1996-10-30 | 1998-05-22 | Ebara Corp | Magnetic bearing device |
| CN2597738Y (en) * | 2002-12-11 | 2004-01-07 | 中国科学院电工研究所 | Hybrid magnetic suspension bearing |
| JP2006217744A (en) * | 2005-02-04 | 2006-08-17 | Nippon Keiki Works Ltd | Bearing structure of motor using permanent magnet |
| KR100873662B1 (en) * | 2007-07-13 | 2008-12-12 | 한국기계연구원 | Supporter of shaft using permanent magnet |
| CN101799045A (en) * | 2009-02-06 | 2010-08-11 | 卓向东 | Anti-offcenter magnetic suspension bearing |
| CN101994760A (en) * | 2009-08-12 | 2011-03-30 | 卓向东 | Interference wave extrusion type magnetic suspension bearing |
| CN102338159A (en) * | 2010-07-16 | 2012-02-01 | 卓向东 | Magnetic suspension bearing with magnetic repulsion suspension and interference wave radial suspension structures |
| US20130216351A1 (en) * | 2011-08-24 | 2013-08-22 | Dresser-Rand Company | Magnetically-coupled damper for turbomachinery |
| CN104295603A (en) * | 2013-07-15 | 2015-01-21 | 卓向东 | Permanent magnet thrust bearing and vertical magnetic levitation motor |
| CN104930056A (en) * | 2014-03-18 | 2015-09-23 | 卓向东 | Magnetic suspension bearing with radial and axial suspension functions |
| CN205190530U (en) * | 2015-12-04 | 2016-04-27 | 天津奥展兴达化工技术有限公司 | No fulcrum, zero friction permanent magnetism suspension bearing |
| CN208619522U (en) * | 2018-05-03 | 2019-03-19 | 南京高明环保科技有限公司 | Permanent magnetism magnetic suspension bearing |
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