CN105134779B - A kind of permanent magnetism magnetic suspension auxiliary bearing - Google Patents
A kind of permanent magnetism magnetic suspension auxiliary bearing Download PDFInfo
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- CN105134779B CN105134779B CN201510683691.4A CN201510683691A CN105134779B CN 105134779 B CN105134779 B CN 105134779B CN 201510683691 A CN201510683691 A CN 201510683691A CN 105134779 B CN105134779 B CN 105134779B
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Abstract
The present invention relates to a kind of permanent magnetism magnetic suspension auxiliary bearing, including 2 interior magnetic groups and 2 outer magnetic groups symmetrical and be disposed opposite to each other on axle sleeve, interior magnetic group radially from the ring-type inner magnetic boots, internal magnetic ring, wedge-like inner magnetic boots and the roller that set gradually from inside to outside by forming；Outer magnetic group is radially secure on the outside of interior magnetic group by specialty metal ring；Outer magnetic group leaves annular gap by radially from magnetic boots form outside magnetic boots, outer magnet and ring-type outside the wedge-like set gradually from inside to outside, wedge-like is outer between magnetic boots and roller；The diametrical magnetization of internal magnetic ring and outer magnetic ring is in opposite direction.The present invention is in magnetic suspension state in underloading, and bearing is without mechanical friction；Rolled and connected by roller under case of heavy load, between outer magnetic group and interior magnetic group, equally there is higher convolution precision and stronger support stiffness；And due to the repulsive force of magnetic action, pressure of the roller to magnetic boots outside wedge-like is substantially reduced, so as to substantially reduce the force of rolling friction outside roller and wedge-like between magnetic boots.
Description
Technical field
The present invention relates to a kind of magnetic suspension bearing, more particularly to a kind of permanent magnetism magnetic suspension auxiliary bearing.
Background technology
Currently used bearing is mechanical rolling or sliding bearing, and this class bearing to rub there is rolling friction and sliding
Wipe, easily wear and increase energy consumption；To eliminate friction phenomenon, there is magnetic suspension bearing, and the pass that magnetic suspension bearing to be solved
Key problem is convolution precision and support stiffness, and in the case where load is light, in kilowatt-hour meter and horological industry, magnetic suspension bearing obtains
Extensive use is arrived.But larger occasion is being loaded, the application of magnetic suspension bearing is greatly limited.
The content of the invention
It is in magnetic suspension state in underloading the invention provides a kind of permanent magnetism magnetic suspension auxiliary bearing, bearing rubs without machinery
Wipe；Rolled and connected by roller under case of heavy load, between outer magnetic group and interior magnetic group, it is same with higher convolution precision and compared with
Strong support stiffness；And due to the repulsive force of magnetic action, pressure of the roller to magnetic boots outside wedge-like is substantially reduced, so as to significantly
Reduce the force of rolling friction between roller and the outer magnetic boots of wedge-like.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of permanent magnetism magnetic suspension auxiliary bearing, including symmetrical and 2 interior magnetic groups being disposed opposite to each other on axle sleeve and 2 outer magnetic
Group, wherein interior magnetic group is by radially from ring-type inner magnetic boots, internal magnetic ring, wedge-like inner magnetic boots and the group of rollers set gradually from inside to outside
Into, and wedge-like inner magnetic boots and roller slope inwardly towards symmetrical centre one end；The outside of interior magnetic group is by nut axial restraint, and 2
Specialty metal ring is set at individual interior magnetic group symmetrical centre, outer magnetic group is radially secure on the outside of interior magnetic group by specialty metal ring；Outside
Magnetic group is by radially from magnetic boots form outside magnetic boots, outer magnetic ring and ring-type outside the wedge-like set gradually from inside to outside, the outer magnetic boots of wedge-like have
There is the inclined-plane being adapted with roller and annular gap is left between roller；The diametrical magnetization direction of the internal magnetic ring and outer magnetic ring
Conversely.
The outer magnetic boots of the ring-type are semi-surrounding shape, and outer magnetic ring is located at the cavity between the outer magnetic boots of ring-type and the outer magnetic boots of wedge-like
It is interior, it is fixedly connected between the outer magnetic boots of ring-type and the outer magnetic boots of wedge-like by outer cover；Wedge-like is outer to be used between magnetic boots and specialty metal ring
Threaded connection.
The specialty metal ring is made up of non-magnetic metal.
The outer magnetic ring and internal magnetic ring are made up of high-coercive force and high energy product high-curie temperature permanent-magnet material, and roller is by leading
Magnetic high-abrasive material is made.
Compared with prior art, the beneficial effects of the invention are as follows：
1) it is in magnetic suspension state in underloading, bearing is without mechanical friction；
2) rolled and connected by roller under case of heavy load, between outer magnetic group and interior magnetic group, equally there is higher convolution
Precision and stronger support stiffness；And due to the repulsive force of magnetic action, pressure of the roller to magnetic boots outside wedge-like is substantially reduced,
So as to substantially reduce the force of rolling friction outside roller and wedge-like between magnetic boots.
3) it is simple in construction, make, be easy for installation.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1. in the wedge-like of 5. roller of the outer magnetic boots of the ring-type of the specialty metal ring 2. 3. outer magnetic ring outer magnetic boots of 4. wedge-like 6.
The outer cover of 10. nut of magnetic boots 7. internal magnetic ring, 8. ring-type inner magnetic boots, 9. axle sleeve 11.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
See Fig. 1, be the structural representation of the present invention.A kind of permanent magnetism magnetic suspension auxiliary bearing of the present invention, including symmetrical and phase
The 2 interior magnetic groups and 2 outer magnetic groups being arranged on axle sleeve 9 are carried on the back, wherein interior magnetic group is by radially from the ring set gradually from inside to outside
Shape inner magnetic boots 8, internal magnetic ring 7, wedge-like inner magnetic boots 6 and roller 5 form, and wedge-like inner magnetic boots 6 and roller 5 are towards symmetrical centre one end
Slope inwardly；The outside of interior magnetic group sets specialty metal ring 1, outer magnetic by the axial restraint of nut 10 at 2 interior magnetic group symmetrical centres
Group is radially secure on the outside of interior magnetic group by specialty metal ring 1；Outer magnetic group is by radially from the wedge-like set gradually from inside to outside
Outer magnetic boots 4, the outer magnetic boots 2 of outer magnetic ring 3 and ring-type form, the outer magnetic boots 4 of wedge-like have the inclined-plane that is adapted with roller 5 and with roller 5
Between leave annular gap；The diametrical magnetization of the internal magnetic ring 7 and outer magnetic ring 3 is in opposite direction.
The outer magnetic boots 2 of the ring-type are semi-surrounding shape, and outer magnetic ring 3 is located between the outer magnetic boots 2 of ring-type and the outer magnetic boots 4 of wedge-like
In cavity, it is fixedly connected between the outer magnetic boots 2 of ring-type and the outer magnetic boots 4 of wedge-like by outer cover 11；The outer magnetic boots 4 of wedge-like and specialty metal ring
Using threaded connection between 1.
The specialty metal ring 1 is made up of non-magnetic metal.
The outer magnetic ring 3 and internal magnetic ring 7 are made up of high-coercive force and high energy product high-curie temperature permanent-magnet material, roller 5
It is made up of magnetic conduction high-abrasive material.
In the present invention, because the magnetic direction of internal magnetic ring 7 and outer magnetic ring 3 is on the contrary, and magnetic boots 4 are arranged on outer magnetic ring outside wedge-like
3 inner side, wedge-like inner magnetic boots 6 are arranged on the outside of internal magnetic ring 7, therefore, exist between the outer magnetic boots 4 of wedge-like and wedge-like inner magnetic boots 6
Repulsive force, because nut 10 screws two interior magnetic groups and close to outer magnetic group, therefore the radial component of repulsive force makes interior magnetic group
It is suspended between outer magnetic group, the axial component of repulsive force defines the axial location of interior magnetic group.
In the case of overload, interior magnetic group is limited in axial direction and the position of radial direction by roller 5.
As illustrated, radially outside is N poles to the magnetic direction of outer magnetic ring 3, inner side is S poles, the magnetic direction of internal magnetic ring 7
With the magnetic direction of outer magnetic ring 3 on the contrary, i.e. radially outside be S poles to the magnetic direction of internal magnetic ring 7, inner side is N poles, wedge-like magnetic outside
The inclined-plane of boots 4 is S poles, and the roller 5 on the inclined-plane of wedge-like inner magnetic boots 6 is also S poles, and the outer magnetic boots 4 of wedge-like are mutually exclusive with roller 5, interior
With outer magnetic group in the presence of repulsive force, 2 interior magnetic groups are suspended between 2 outer magnetic groups magnetic group.Point of repulsive force diametrically
Amount, makes interior magnetic group radially suffer restraints, and the repulsive force suffered by 2 interior magnetic groups is in axial component on the contrary, defining interior magnetic
Group is in the position of axial direction.
During by 10 axial restraint of nut, interior magnetic group should close proximity to outer magnetic group, due to outside wedge-like magnetic boots 4 and roller 5 it
Between gap very little, and repulsive force is very big, therefore precision of circling round is high.Bearing of the present invention have higher convolution precision and compared with
Strong support stiffness, diametrically shake and axial direction on swing it is all very small.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (4)
1. a kind of permanent magnetism magnetic suspension auxiliary bearing, it is characterised in that including 2 interior magnetic groups that are symmetrical and being disposed opposite to each other on axle sleeve
With 2 outer magnetic groups, wherein interior magnetic group is by radially from the ring-type inner magnetic boots, internal magnetic ring, wedge-like inner magnetic boots set gradually from inside to outside
Formed with roller, and wedge-like inner magnetic boots and roller slope inwardly towards symmetrical centre one end；Pass through nut shaft on the outside of interior magnetic group
To fixation, specialty metal ring is set at 2 interior magnetic group symmetrical centres, outer magnetic group is radially secure in interior magnetic group by specialty metal ring
Outside；Outer magnetic group is by radially from magnetic boots form outside magnetic boots, outer magnetic ring and ring-type outside the wedge-like set gradually from inside to outside, outside wedge-like
Magnetic boots have the inclined-plane being adapted with roller and annular gap are left between roller；The radial direction magnetic of the internal magnetic ring and outer magnetic ring
Change in opposite direction；
Due to the magnetic direction of internal magnetic ring and outer magnetic ring on the contrary, and magnetic boots are arranged on the inner side of outer magnetic ring outside wedge-like, magnetic in wedge-like
Boots are arranged on the outside of internal magnetic ring, therefore, wedge-like it is outer between magnetic boots and wedge-like inner magnetic boots there is repulsive force, because nut is by two
Individual interior magnetic group screws and close to outer magnetic group, therefore the radial component of repulsive force makes interior magnetic group be suspended between outer magnetic group, repulsive force
Axial component define the axial location of interior magnetic group；It is in magnetic suspension state in underloading, bearing is without mechanical friction；
Under case of heavy load, between outer magnetic group and interior magnetic group by roller roll connect, by roller limit in magnetic group axially with
The position of radial direction, equally there is higher convolution precision and stronger support stiffness；And due to the repulsive force of magnetic action, significantly
Pressure of the roller to magnetic boots outside wedge-like is reduced, so as to substantially reduce the force of rolling friction outside roller and wedge-like between magnetic boots.
2. a kind of permanent magnetism magnetic suspension auxiliary bearing according to claim 1, it is characterised in that the outer magnetic boots of the ring-type are half
Shape is surrounded, outer magnetic ring is located in the cavity between the outer magnetic boots of ring-type and the outer magnetic boots of wedge-like, the outer magnetic boots of ring-type and the outer magnetic boots of wedge-like
Between be fixedly connected by outer cover；Outer used between magnetic boots and specialty metal ring of wedge-like is threadedly coupled.
A kind of 3. permanent magnetism magnetic suspension auxiliary bearing according to claim 1 or 2, it is characterised in that the specialty metal ring
It is made up of non-magnetic metal.
4. a kind of permanent magnetism magnetic suspension auxiliary bearing according to claim 1, it is characterised in that the outer magnetic ring and internal magnetic ring
It is made up of high-coercive force and high energy product high-curie temperature permanent-magnet material, roller is made up of magnetic conduction high-abrasive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510683691.4A CN105134779B (en) | 2015-10-20 | 2015-10-20 | A kind of permanent magnetism magnetic suspension auxiliary bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510683691.4A CN105134779B (en) | 2015-10-20 | 2015-10-20 | A kind of permanent magnetism magnetic suspension auxiliary bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105134779A CN105134779A (en) | 2015-12-09 |
| CN105134779B true CN105134779B (en) | 2017-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510683691.4A Active CN105134779B (en) | 2015-10-20 | 2015-10-20 | A kind of permanent magnetism magnetic suspension auxiliary bearing |
Country Status (1)
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| CN (1) | CN105134779B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017103332A1 (en) * | 2017-02-17 | 2018-08-23 | Thyssenkrupp Ag | Magnetic bearing and method for operating a magnetic bearing |
| CN109210078A (en) * | 2018-10-08 | 2019-01-15 | 西安科技大学 | A kind of efficiently cooling radial passive Permanent-magnet bearing structure of big damping |
| CN108930715B (en) * | 2018-10-10 | 2020-06-19 | 杭州江河水电科技有限公司 | Bidirectional adjacent coprime magnetic force and roller hybrid thrust bearing system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4379598A (en) * | 1980-12-22 | 1983-04-12 | North American Philips Corporation | Magnetic bearing |
| JP2000161359A (en) * | 1998-11-30 | 2000-06-13 | Sanyo Denki Co Ltd | Supporting structure of rotary member |
| JP2005083548A (en) * | 2003-09-11 | 2005-03-31 | Koyo Seiko Co Ltd | Roller bearing device |
| CN101666354B (en) * | 2009-09-26 | 2012-03-07 | 林智勇 | Magnetic suspension combined ball bearing |
| CN103758869A (en) * | 2014-02-12 | 2014-04-30 | 钱坤喜 | Permanent magnet bearing and roller bearing combined bearing |
| CN205078613U (en) * | 2015-10-20 | 2016-03-09 | 鞍山钢峰风机有限责任公司 | Permanent magnetism suspension auxiliary bearing |
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2015
- 2015-10-20 CN CN201510683691.4A patent/CN105134779B/en active Active
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| CN105134779A (en) | 2015-12-09 |
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