CN105864290B - A kind of double-layer nested bearing of high speed of electromagnetism rate controlling - Google Patents
A kind of double-layer nested bearing of high speed of electromagnetism rate controlling Download PDFInfo
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- CN105864290B CN105864290B CN201510028437.0A CN201510028437A CN105864290B CN 105864290 B CN105864290 B CN 105864290B CN 201510028437 A CN201510028437 A CN 201510028437A CN 105864290 B CN105864290 B CN 105864290B
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Abstract
The invention discloses a kind of double-layer nested bearings of high speed of electromagnetism rate controlling, including first bearing and the second bearing for being nested in first bearing inner ring, the contact position of the hollow mouse cage of fixed symmetrical installation iron-core-free, the hollow mouse cage and the first bearing and second bearing keeps electric insulation state at the nested contact position of the first bearing inner ring and the second bearing outer ring；The first set of permanent magnets is symmetrically fixedly mounted in first bearing outer ring side, and the second set of permanent magnets is symmetrically fixedly mounted in second bearing inner ring side；First set of permanent magnets and second set of permanent magnets are that heteropolar attracting mode arranges, magnetic induction line can pass through the hollow mouse cage along bearing race diametrical direction, the beneficial effects of the present invention are: providing a kind of double-layer nested bearing of high speed of electromagnetism rate controlling, overcome the problems, such as that bearing mixing centre circle rotary speed unstabilization is fixed uncontrolled using Electromagnetic Control technology, service life and job stability under the high revolving speed of effectively controllable guarantee bearing.
Description
Technical field
The present invention relates to a kind of bearings, and in particular to a kind of double-layer nested bearing of high speed of electromagnetism rate controlling.
Background technique
Current high-speed ball bearing, the deep-groove ball single layer structure generallyd use, in the occasion that needs run at high speed, such as machine
The fields such as bed main shaft can use the structure (such as Fig. 1) of double-layer nested bearing, the basic principle is that: it adopts the shaft end of spindle motor
The inner ring 201 of two bearings, the i.e. nested structure of bearing 1 and bearing 2, bearing 2 assumes with opposite bearing 1 and bearing 2
Mixing centre circle (2 outer ring 202 of bearing and 1 inner ring 101 of bearing) speed V1 rotation, then mixing centre circle also can be with opposite bearing 1
Outer ring 102 is rotated with the speed follower of V2, and the outer ring 102 of bearing 1 is fixed on end cap, it can be seen that 2 inner ring 201 of bearing
Actual speed V=V1+V2, this, which is equivalent to, has decomposed two bearings for main shaft output revolving speed to share, but this can generate one
The problem of speed equilibrium assignment of V1 and V2, because being influenced by Production of bearing technique, bearing internal external frictional force can not be completely
Uniform balance, revolving speed when this will lead to real-world operation are uncontrolled, it is possible to keep the revolving speed difference of V1 and V2 excessive and make bearing
Certain part Fast Wearing and influence the bulk life time of bearing, the present invention, which mainly aims at, to be solved the problems, such as this and proposes.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of high speed of electromagnetism rate controlling bilayers
Nested bearing, the Electromagnetic Control technology of use overcome the problems, such as that bearing mixing centre circle rotary speed unstabilization is fixed uncontrolled, effectively controllable
Guarantee bearing high revolving speed under service life and job stability.
In order to achieve the above object, this invention takes following technical schemes: a kind of high speed of electromagnetism rate controlling of the invention
Double-layer nested bearing, including first bearing and the second bearing that is nested at first bearing inner ring, the first bearing inner ring and
The hollow mouse cage of fixed symmetrical installation iron-core-free, the hollow mouse cage and institute at the nested contact position of the second bearing outer ring
State holding electric insulation state at the contact position of first bearing and second bearing；First bearing outer ring side is symmetrically fixed
First set of permanent magnets is installed, the second set of permanent magnets is symmetrically fixedly mounted in second bearing inner ring side；First permanent magnet
Group and second set of permanent magnets are that heteropolar attracting mode arranges, and magnetic induction line can pass through hollow mouse along bearing race diametrical direction
Cage.
A kind of scheme, first set of permanent magnets by two identical permanent magnets by it is heteropolar it is attracting in a manner of arrange, it is symmetrical fixed
It is mounted on the first bearing outer ring；Second set of permanent magnets by four identical permanent magnets by it is heteropolar it is attracting in a manner of it is two two rows of
Column, are symmetrically and fixedly mounted to the second bearing inner ring；The cage item of the hollow mouse cage of iron-core-free is by the first cage item group and second
Cage item group is composed of a fixed connection, and the quantity ratio for forming the cage item of the first cage item group and the second cage item group is 1.
Another scheme, first set of permanent magnets can also by four identical permanent magnets by it is heteropolar it is attracting in a manner of it is two two rows of
Column, are symmetrically and fixedly mounted to the first bearing outer ring, second set of permanent magnets is by two identical permanent magnets with heteropolar at this time
Attracting mode arranges, and is symmetrically and fixedly mounted to the second bearing inner ring；The cage item of the hollow mouse cage of iron-core-free is by the first cage
Item group and the second cage item group are composed of a fixed connection, and form the quantity ratio of the cage item of the first cage item group and the second cage item group
Value is 1.
The third scheme, first set of permanent magnets and second set of permanent magnets can also by two identical permanent magnets with
Heteropolar attracting mode arranges, and is symmetrically and fixedly mounted on corresponding shaft bearing circle；The cage item of the hollow mouse cage of iron-core-free is by the first cage
Item group and the second cage item group are composed of a fixed connection, and form the quantity ratio of the cage item of the first cage item group and the second cage item group
Value is 2 or 1/2.
The beneficial effects of the present invention are: the present invention overcomes bearing mixing centre circle rotary speed unstabilization using Electromagnetic Control technology
Determine uncontrolled problem, service life and job stability under the high revolving speed of effectively controllable guarantee bearing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double-layer nested bearing described in background of invention.
Fig. 2 is structure of the invention sectional view.
Fig. 3 is scheme of the present invention 1. front view.
Fig. 4 is scheme of the present invention 1. side view.
Fig. 5 is scheme of the present invention 2. schematic perspective view.
Fig. 6 is scheme of the present invention 3. schematic perspective view.
Fig. 7 is scheme of the present invention 3. side view.
Fig. 8 is a kind of structural schematic diagram of the hollow mouse cage of scheme of the present invention 3..
Specific embodiment
The present invention provides a kind of double-layer nested bearings of high speed of electromagnetism rate controlling, to make the purpose of the present invention, technical solution
And better effect understands, is clear, below with reference to attached drawing and gives an actual example that the present invention is described in more detail, it should be understood that for
For those of ordinary skill in the art, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the structural schematic diagram of double-layer nested bearing described in background of invention.
Fig. 2 is structure of the invention sectional view.
Fig. 3 is scheme of the present invention 1. front view.
Fig. 4 is scheme of the present invention 1. side view.
Fig. 5 is scheme of the present invention 2. schematic perspective view.
Fig. 6 is scheme of the present invention 3. schematic perspective view.
Fig. 7 is scheme of the present invention 3. side view.
Fig. 8 is a kind of structural schematic diagram of the hollow mouse cage of scheme of the present invention 3..
As shown in Fig. 2, a kind of double-layer nested bearing of high speed of electromagnetism rate controlling of the invention, including first bearing 1 with it is nested
The nested contact position of second bearing 2 at first bearing inner ring 101, first bearing inner ring 101 and second bearing outer ring 202
Locate the hollow mouse cage 3 of fixed symmetrical installation iron-core-free, hollow mouse cage 3 is protected at the contact position of first bearing 1 and second bearing 2
Hold electric insulation state；The first set of permanent magnets 4, second bearing inner ring 201 1 is symmetrically fixedly mounted in 102 side of first bearing outer ring
The second set of permanent magnets 5 is symmetrically fixedly mounted in side；First set of permanent magnets 4 and the second set of permanent magnets 5 are that heteropolar attracting mode is arranged
Column, magnetic induction line can pass through hollow mouse cage 3 along bearing race diametrical direction.
When operating, second bearing inner ring 201 can be rotated together with the second set of permanent magnets 5, and the second set of permanent magnets 5
The magnetic field that rotation will form a rotation can be analyzed hollow 3 meeting of mouse cage according to electromagnetism basic principle by ampere Left Hand Rule
By rotating excitation field driving force and follow rotation, while mouse cage 3 is analyzed also by ampere right-hand law and will receive the first permanent magnetism
The drag of body group 4, from the general work situation of motor it is recognised that not to mixing centre circle (first bearing inner ring 101 with
Second bearing outer ring 202 is composed of a fixed connection) apply electromagnetic effect power when, mix centre circle rotation mainly by frictional force shadow
It rings, and frictional force is difficult to be controlled, and after applying Electromagnetic Control, since electromagnetic force is much larger than frictional force, mix centre circle
Rotation will mainly be controlled by electromagnetic force, mixing centre circle can be controlled by the control of the electromagnetic force opposite to the two
Rotation speed, to guarantee that the operating of bearing is maintained at controllable speeds.
The speed of specific control mixing centre circle, following technical scheme can be used: 1., as Figure 3-Figure 4, first forever for scheme
Magnet group 4 by two identical permanent magnets by it is heteropolar it is attracting in a manner of arrange, be symmetrically and fixedly mounted on first bearing outer ring 102；The
Two set of permanent magnets 5 by four identical permanent magnets by it is heteropolar it is attracting in a manner of arrange two-by-two, be symmetrically and fixedly mounted to second bearing inner ring
On 201；The cage item of the hollow mouse cage 3 of iron-core-free is composed of a fixed connection by the first cage item group 301 and the second cage item group 302, forms institute
The quantity ratio for stating the cage item of the first cage item group 301 and the second cage item group is 1.
Scheme 2., as shown in figure 5, the first set of permanent magnets 4 can also by four identical permanent magnets by it is heteropolar it is attracting in a manner of two-by-two
Arrangement, is symmetrically and fixedly mounted on first bearing outer ring 102, the second set of permanent magnets 5 is by two identical permanent magnets with heteropolar at this time
Attracting mode arranges, and is symmetrically and fixedly mounted on second bearing inner ring 201；The cage item of the hollow mouse cage 3 of iron-core-free is by the first cage item
Group 301 and the second cage item group 302 are composed of a fixed connection, and form the quantity of the cage item of the first cage item group 301 and the second cage item group 302
Ratio is 1.
3., as Figure 6-Figure 8, the first set of permanent magnets 4 and the second set of permanent magnets 5 can also be by two identical permanent magnetism for scheme
Body by it is heteropolar it is attracting in a manner of arrange, be symmetrically and fixedly mounted on corresponding shaft bearing circle, i.e., the first set of permanent magnets 4 is symmetrically and fixedly mounted to
On first bearing outer ring 102, the second set of permanent magnets 5 is symmetrically and fixedly mounted on second bearing inner ring 201；The hollow mouse cage of iron-core-free
3 cage item is composed of a fixed connection by the first cage item group 301 and the second cage item group 302, forms the first cage item group 301 and the second cage item
The quantity ratio of the cage item of group 302 is 2 or 1/2.
The speed of rotating excitation field be determine mixing centre circle revolving speed deciding factor, in the present invention there are two (relative to
Mouse cage) opposite rotating excitation field, it is formed respectively by the first set of permanent magnets 4 and the second set of permanent magnets 5, therefore it is certain to mix centre circle
Meeting work (refers to identical revolutional slip and opposite vector) in the state that two rotating excitation fields are cancelled out each other and is just able to maintain stabilization
Rotation, the inner ring 201 of bearing 2 assume that rotate relative to mixing centre circle speed V1, then mixing centre circle also can be with the outer of opposite bearing 1
Circle 102 is rotated with the speed follower of V2；Mouse cage and permanent magnet are installed with full symmetric shape in the present invention, then mixing
The mechanical relative rotation speed of centre circle necessarily V1=V2, then: scheme 3. in, the mechanical relative rotation speed for mixing centre circle should be V1=2*
V2；Scheme 1. in, then the relative mechanical revolving speed for mixing centre circle should be V1=1/2V2；Scheme 2. in, then mix the phase of centre circle
It is V1=2*V2 to mechanical separator speed.
Its Theory of Interpretation is as follows: due to according to the revolving speed of Electrical Motor General Principle, motor mouse cage being turned by driving magnetic field
What speed and the size of load determined, since the mouse cage in the present invention is a unloaded mouse cage, the resistance being subject to is bearing itself
Frictional force, this power is very faint, so its revolving speed will be with close to the synchronizing speed of rotating excitation field, revolutional slip
Level off to zero.
Specific to two opposite rotating excitation fields for being operate on the same mouse cage in the present invention, can be regarded as, if neglected
The slightly frictional force of bearing, then can regard that two rotating excitation fields are cancelled out each other as when two sides squirrel-cage bar number is equal, it is clear that its
By electromagnetic force equilibrium, if side increases the item number of mouse cage, it can regard that the speed of side rotating excitation field increases as, mouse cage
Corresponding revolving speed must be increased, to guarantee the equal in magnitude of revolutional slip, contrary state, to maintain the equal of stress
Weighing apparatus.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as, it is noted that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Range is protected, therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (1)
1. the double-layer nested bearing of high speed of a kind of electromagnetism rate controlling, including first bearing and the second axis for being nested in first bearing inner ring
It holds, it is characterised in that: fixed symmetrical is installed at the nested contact position of the first bearing inner ring and the second bearing outer ring
Electric insulation is kept at the contact position of the hollow mouse cage of iron-core-free, the hollow mouse cage and the first bearing and second bearing
State；The first set of permanent magnets is symmetrically fixedly mounted in first bearing outer ring side, and second bearing inner ring side is symmetrically solid
Dingan County fills the second set of permanent magnets；First set of permanent magnets and second set of permanent magnets are that heteropolar attracting mode arranges,
Magnetic induction line can pass through the hollow mouse cage along bearing race diametrical direction, and the cage item of the hollow mouse cage of iron-core-free is by the first cage item group
It is composed of a fixed connection with the second cage item group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510028437.0A CN105864290B (en) | 2015-01-21 | 2015-01-21 | A kind of double-layer nested bearing of high speed of electromagnetism rate controlling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510028437.0A CN105864290B (en) | 2015-01-21 | 2015-01-21 | A kind of double-layer nested bearing of high speed of electromagnetism rate controlling |
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| CN105864290A CN105864290A (en) | 2016-08-17 |
| CN105864290B true CN105864290B (en) | 2019-02-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110556988A (en) * | 2019-10-22 | 2019-12-10 | 青岛厚德新能源科技开发有限公司 | Double-rotor generator |
| CN111255806A (en) * | 2020-03-10 | 2020-06-09 | 重庆中电大宇卫星应用技术研究所 | Ultra-high-speed bearing with driving function and driving method thereof |
| CN111503151A (en) * | 2020-06-16 | 2020-08-07 | 陈铁钢 | Speed regulation method of reluctance type double-slideway high-speed bearing based on microcomputer control |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10248218A (en) * | 1997-02-27 | 1998-09-14 | Ebara Corp | Maglev motor |
| CN1490532A (en) * | 2002-10-18 | 2004-04-21 | 军 李 | Secondary bearing with electromagnetic speed regulation in interelectrode |
| JP2007056978A (en) * | 2005-08-24 | 2007-03-08 | Ntn Corp | Magnetic fluid bearing |
| CN100523535C (en) * | 2007-12-24 | 2009-08-05 | 南京航空航天大学 | Centripetal protection bearing for magnetic levitation bearing system |
| CN101666354B (en) * | 2009-09-26 | 2012-03-07 | 林智勇 | Magnetic suspension combined ball bearing |
| CN102868268A (en) * | 2011-07-03 | 2013-01-09 | 余虹锦 | Novel air gap magnetic field electromagnetic modulation permanent magnet motor with double squirrel cage structure |
| CN204458825U (en) * | 2015-01-21 | 2015-07-08 | 雷虹桥 | A kind of double-layer nested bearing of high speed of electromagnetism control speed |
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