CN105864290A - Electromagnetic speed control high-speed dual-layer nested bearing - Google Patents
Electromagnetic speed control high-speed dual-layer nested bearing Download PDFInfo
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- CN105864290A CN105864290A CN201510028437.0A CN201510028437A CN105864290A CN 105864290 A CN105864290 A CN 105864290A CN 201510028437 A CN201510028437 A CN 201510028437A CN 105864290 A CN105864290 A CN 105864290A
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Abstract
The invention discloses an electromagnetic speed control high-speed dual-layer nested bearing. The electromagnetic speed control high-speed dual-layer nested bearing comprises a first bearing and a second bearing nested in an inner ring of the first bearing, wherein the nested contact part of the inner ring of the first bearing and an outer ring of the second bearing is fixedly and symmetrically provided with an iron-core-free hollow mouse cage; the contact parts of the hollow mouse cage with the first bearing and the second bearing keep the electrical insulation state; first permanent magnet groups are symmetrically and fixedly installed at one side of the outer ring of the first bearing; second permanent magnet groups are symmetrically and fixedly installed at one side of the inner ring of the second bearing; the first permanent magnet groups and the second permanent magnet groups are ranked in a mode of heteropole attraction; a magnetic induction line can penetrate through the hollow mouse cage along the diameter direction of the bearing ring. The electromagnetic speed control high-speed dual-layer nested bearing has the beneficial effects that the electromagnetic speed control high-speed dual-layer nested bearing is provided, and an electromagnetic control technique is adopted for overcoming the problem that the rotation speed of a bearing mixed middle ring is instable and is not controlled, and the service life and the operation stability of the bearing can be ensured effectively and controllably.
Description
Technical field
The present invention relates to a kind of bearing, be specifically related to the double-layer nested bearing of high speed of a kind of electromagnetism rate controlling.
Background technology
nullCurrent high-speed ball bearing，Commonly used deep-groove ball single layer structure，In the occasion that needs run up，Such as fields such as machine tool chief axis，The structure (such as Fig. 1) of double-layer nested bearing can be used，Its ultimate principle is: two bearings that the axle head of spindle motor uses，I.e. bearing 1 and the nested structure of bearing 2，The inner ring 201 of its bearing 2 supposes to rotate relative to the mixing centre circle of bearing 1 and bearing 2 (bearing 2 outer ring 202 and bearing 1 inner ring 101) speed V1，Then mixing centre circle also can rotate with the speed follower of V2 with the outer ring 102 relative to bearing 1，And the outer ring 102 of bearing 1 is fixed on end cap，Can be seen that actual speed V=V1+V2 of bearing 2 inner ring 201，This is equivalent to that main shaft output speed has decomposed two bearings and shares，But this can produce the problem of speed equilibrium assignment of V1 Yu V2，Because being affected by Production of bearing technique，Bearing internal external frictional force can not complete uniform balance，This can cause rotating speed during real-world operation uncontrolled，The rotating speed difference that there is a possibility that V1 Yu V2 is excessive and makes certain part Fast Wearing of bearing affect the bulk life time of bearing，The present invention mainly aims at this problem of solution and proposes.
Summary of the invention
In place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide the double-layer nested bearing of high speed of a kind of electromagnetism rate controlling, the Electromagnetic Control technology used overcomes the fixed uncontrolled problem of bearing mixing centre circle rotary speed unstabilization, the most controlled life-span under the high rotating speed ensureing bearing and job stability.
In order to achieve the above object, this invention takes techniques below scheme: the double-layer nested bearing of high speed of a kind of electromagnetism rate controlling of the present invention, including clutch shaft bearing and be nested in the second bearing at clutch shaft bearing inner ring, the nested contact position fixed symmetrical of described clutch shaft bearing inner ring and described second bearing outer ring installs the hollow mouse cage of iron-core-free, keeps electric insulation state at described hollow mouse cage and the contact position of described clutch shaft bearing and the second bearing；Side, described clutch shaft bearing outer ring symmetry fixedly mounts the first set of permanent magnets, and described second bearing inner race side symmetry fixedly mounts the second set of permanent magnets；The mode that described first set of permanent magnets and described second set of permanent magnets are heteropole attracting arranges, and magnetic induction line can be along race ring diametric(al) through hollow mouse cage.
A kind of scheme, described first set of permanent magnets is arranged in the attracting mode of heteropole by two identical permanent magnets, is symmetrically and fixedly mounted to described clutch shaft bearing outer ring；Described second set of permanent magnets is arranged in the attracting mode of heteropole two-by-two by four identical permanent magnets, is symmetrically and fixedly mounted to described second bearing inner race；The cage bar of the hollow mouse cage of described iron-core-free is composed of a fixed connection by the first cage bar group and the second cage bar group, and the quantity ratio of the cage bar forming described first cage bar group and described second cage bar group is 1.
Another kind of scheme, described first set of permanent magnets also can be arranged in the attracting mode of heteropole by four identical permanent magnets two-by-two, it is symmetrically and fixedly mounted to described clutch shaft bearing outer ring, the most described second set of permanent magnets is arranged in the attracting mode of heteropole by two identical permanent magnets, is symmetrically and fixedly mounted to described second bearing inner race；The cage bar of the hollow mouse cage of described iron-core-free is composed of a fixed connection by the first cage bar group and the second cage bar group, and the quantity ratio of the cage bar forming described first cage bar group and described second cage bar group is 1.
The third scheme, described first set of permanent magnets and described second set of permanent magnets also can be arranged in the attracting mode of heteropole by two identical permanent magnets, are symmetrically and fixedly mounted on corresponding race ring；The cage bar of the hollow mouse cage of described iron-core-free is composed of a fixed connection by the first cage bar group and the second cage bar group, and the quantity ratio of the cage bar forming described first cage bar group and described second cage bar group is 2 or 1/2.
The invention has the beneficial effects as follows: the present invention uses Electromagnetic Control technology to overcome bearing mixing centre circle rotary speed unstabilization to determine uncontrolled problem, the most controlled life-span under the high rotating speed ensureing bearing and job stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of double-layer nested bearing described in background of invention.
Fig. 2 is present configuration profile.
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. perspective view.
Fig. 6 is scheme of the present invention 3. perspective view.
Fig. 7 is scheme of the present invention 3. side view.
Fig. 8 is a kind of structural representation of scheme of the present invention hollow mouse cage 3..
Detailed description of the invention
The invention provides the double-layer nested bearing of high speed of a kind of electromagnetism rate controlling, for making the purpose of the present invention, technical scheme and better clear, clear and definite, below with reference to accompanying drawing and give an actual example that the present invention is described in more detail, it is to be understood that, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of double-layer nested bearing described in background of invention.
Fig. 2 is present configuration profile.
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. perspective view.
Fig. 6 is scheme of the present invention 3. perspective view.
Fig. 7 is scheme of the present invention 3. side view.
Fig. 8 is a kind of structural representation of scheme of the present invention hollow mouse cage 3..
As shown in Figure 2, a kind of high speed double-layer nested bearing of the electromagnetism rate controlling of the present invention, including clutch shaft bearing 1 be nested in the second bearing 2 at clutch shaft bearing inner ring 101, the nested contact position fixed symmetrical of clutch shaft bearing inner ring 101 and the second bearing outer ring 202 installs the hollow mouse cage 3 of iron-core-free, keeps electric insulation state at hollow mouse cage 3 and the contact position of clutch shaft bearing 1 and the second bearing 2；Side, clutch shaft bearing outer ring 102 symmetry fixedly mounts the first set of permanent magnets 4, and the second bearing inner race 201 side symmetry fixedly mounts the second set of permanent magnets 5；The mode that first set of permanent magnets 4 and the second set of permanent magnets 5 are heteropole attracting arranges, and magnetic induction line can be along race ring diametric(al) through hollow mouse cage 3.
nullWhen operating，Second bearing inner race 201 can rotate together with the second set of permanent magnets 5，And the rotation of the second set of permanent magnets 5 can form the magnetic field rotated，According to electromagnetism ultimate principle，Hollow mouse cage 3 can be analyzed by ampere Left Hand Rule and can be followed rotation by the driving force of rotating excitation field，Analyzed mouse cage 3 by ampere right-hand law also can be by the drag of the first set of permanent magnets 4 simultaneously，From the general work situation of motor it is known that，When mixing centre circle (clutch shaft bearing inner ring 101 and the second bearing outer ring 202 are composed of a fixed connection) not being applied electromagnetic effect power，Rotating of mixing centre circle is mainly affected by frictional force，And frictional force is difficult to be controlled by，And after applying Electromagnetic Control，Owing to electromagnetic force is much larger than frictional force，The rotation of mixing centre circle will mainly be controlled by electromagnetic force，Just can be controlled to mix the rotary speed of centre circle by the control of the electromagnetic force contrary to the two，Thus ensure that the operating of bearing is maintained at controlled speeds.
The concrete speed controlling mixing centre circle, can be by the following technical solutions: 1., as Figure 3-Figure 4, the first set of permanent magnets 4 is arranged in the attracting mode of heteropole scheme by two identical permanent magnets, is symmetrically and fixedly mounted on clutch shaft bearing outer ring 102；Second set of permanent magnets 5 is arranged in the attracting mode of heteropole two-by-two by four identical permanent magnets, is symmetrically and fixedly mounted on the second bearing inner race 201；The cage bar of the hollow mouse cage of iron-core-free 3 is composed of a fixed connection by the first cage bar group 301 and the second cage bar group 302, and the quantity ratio of the cage bar forming described first cage bar group 301 and described second cage bar group is 1.
Scheme is 2., as shown in Figure 5, first set of permanent magnets 4 also can be arranged in the attracting mode of heteropole by four identical permanent magnets two-by-two, it is symmetrically and fixedly mounted on clutch shaft bearing outer ring 102, now the second set of permanent magnets 5 is arranged in the attracting mode of heteropole by two identical permanent magnets, is symmetrically and fixedly mounted on the second bearing inner race 201；The cage bar of the hollow mouse cage of iron-core-free 3 is composed of a fixed connection by the first cage bar group 301 and the second cage bar group 302, and the quantity ratio of the cage bar forming the first cage bar group 301 and the second cage bar group 302 is 1.
Scheme is 3., as Figure 6-Figure 8, first set of permanent magnets 4 also can be arranged in the attracting mode of heteropole by two identical permanent magnets with the second set of permanent magnets 5, it is symmetrically and fixedly mounted on corresponding race ring, i.e. first set of permanent magnets 4 is symmetrically and fixedly mounted on clutch shaft bearing outer ring 102, and the second set of permanent magnets 5 is symmetrically and fixedly mounted on the second bearing inner race 201；The cage bar of the hollow mouse cage of iron-core-free 3 is composed of a fixed connection by the first cage bar group 301 and the second cage bar group 302, and the quantity ratio of the cage bar forming the first cage bar group 301 and the second cage bar group 302 is 2 or 1/2.
The speed of rotating excitation field is the deciding factor determining mixing centre circle rotating speed, there is the rotating excitation field that two (relative to mouse cage) is contrary in the present invention, formed by the first set of permanent magnets 4 and the second set of permanent magnets 5 respectively, therefore mixing centre circle is bound to be operated under the state that two rotating excitation fields are cancelled out each other (referring to identical revolutional slip and contrary vector) and could keep stably rotating, the inner ring 201 of bearing 2 supposes to rotate relative to mixing centre circle speed V1, then mixing centre circle also can rotate with the speed follower of V2 with the outer ring 102 relative to bearing 1；In the present invention, mouse cage and permanent magnet are to install with full symmetric shape, then mixing centre circle mechanical relative rotation speed necessarily V1=V2, then: scheme 3. in, mixing centre circle mechanical relative rotation speed should be V1=2*V2；Scheme 1. in, then the relative mechanical rotating speed mixing centre circle should be V1=1/2V2；Scheme 2. in, then the relative mechanical rotating speed mixing centre circle is V1=2*V2.
Its Theory of Interpretation is as follows: due to according to Electrical Motor General Principle, the rotating speed of motor mouse cage is that the size of the rotating speed by driving magnetic field and load determines, owing to the mouse cage in the present invention is a unloaded mouse cage, its resistance being subject to is the frictional force of bearing itself, this power is the faintest, so its rotating speed is by with the synchronizing speed close to rotating excitation field, its revolutional slip levels off to zero.
Specific in the present invention, two the contrary rotating excitation fields working in same mouse cage can be regarded as, if ignoring the frictional force of bearing, then when both sides squirrel-cage bar number is equal, can regard that two rotating excitation fields are cancelled out each other as, obviously it is equalized by electromagnetic force, if side adds the bar number of mouse cage, can regard that the speed of side rotating excitation field increases as, its mouse cage must increase corresponding rotating speed, to ensure the state equal in magnitude, in opposite direction of revolutional slip, thus maintain the equilibrium of stress.
Embodiment described above only have expressed one embodiment of the present invention; it describes more concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; it should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise; some deformation and improvement can also be made; these broadly fall into protection scope of the present invention, and therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (4)
1. the double-layer nested bearing of the high speed of an electromagnetism rate controlling, including clutch shaft bearing and the second bearing being nested in clutch shaft bearing inner ring, it is characterized in that: the nested contact position fixed symmetrical of described clutch shaft bearing inner ring and described second bearing outer ring installs the hollow mouse cage of iron-core-free, keeps electric insulation state at described hollow mouse cage and the contact position of described clutch shaft bearing and the second bearing；Side, described clutch shaft bearing outer ring symmetry fixedly mounts the first set of permanent magnets, and described second bearing inner race side symmetry fixedly mounts the second set of permanent magnets；The mode that described first set of permanent magnets and described second set of permanent magnets are heteropole attracting arranges, and magnetic induction line can be along race ring diametric(al) through described hollow mouse cage.
The double-layer nested bearing of high speed of a kind of electromagnetism rate controlling the most according to claim 1, it is characterised in that: described first set of permanent magnets is arranged in the attracting mode of heteropole by two identical permanent magnets, is symmetrically and fixedly mounted to described clutch shaft bearing outer ring；Described second set of permanent magnets is arranged in the attracting mode of heteropole two-by-two by four identical permanent magnets, is symmetrically and fixedly mounted to described second bearing inner race；The cage bar of the hollow mouse cage of described iron-core-free is composed of a fixed connection by the first cage bar group and the second cage bar group, and the quantity ratio of the cage bar forming described first cage bar group and described second cage bar group is 1.
The double-layer nested bearing of high speed of a kind of electromagnetism rate controlling the most according to claim 1, it is characterized in that: described first set of permanent magnets also can be arranged in the attracting mode of heteropole by four identical permanent magnets two-by-two, it is symmetrically and fixedly mounted to described clutch shaft bearing outer ring, the most described second set of permanent magnets is arranged in the attracting mode of heteropole by two identical permanent magnets, is symmetrically and fixedly mounted to described second bearing inner race；The cage bar of the hollow mouse cage of described iron-core-free is composed of a fixed connection by the first cage bar group and the second cage bar group, and the quantity ratio of the cage bar forming described first cage bar group and described second cage bar group is 1.
The double-layer nested bearing of high speed of a kind of electromagnetism rate controlling the most according to claim 1, it is characterized in that: described first set of permanent magnets also can be arranged in the attracting mode of heteropole by two identical permanent magnets with described second set of permanent magnets, be symmetrically and fixedly mounted on corresponding race ring；The cage bar of the hollow mouse cage of described iron-core-free is composed of a fixed connection by the first cage bar group and the second cage bar group, the quantity ratio of the cage bar forming described first cage bar group and described second cage bar group is 2 or 1/2, and the ratio of design, but need to keep symmetrical to circular shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| Application Number | Priority Date | Filing Date | Title |
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| 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 true CN105864290A (en) | 2016-08-17 |
| CN105864290B CN105864290B (en) | 2019-02-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 |
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| CN101187405A (en) * | 2007-12-24 | 2008-05-28 | 南京航空航天大学 | Centripetal protection bearing for magnetic levitation bearing system |
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| 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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2015
- 2015-01-21 CN CN201510028437.0A patent/CN105864290B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101187405A (en) * | 2007-12-24 | 2008-05-28 | 南京航空航天大学 | Centripetal protection bearing for magnetic levitation bearing system |
| CN101666354A (en) * | 2009-09-26 | 2010-03-10 | 林智勇 | Magnetic suspension combined ball bearing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN105864290B (en) | 2019-02-19 |
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