CN106763183A - Permanent-magnet suspension bearing based on gyroscopic effect - Google Patents
Permanent-magnet suspension bearing based on gyroscopic effect Download PDFInfo
- Publication number
- CN106763183A CN106763183A CN201710028074.XA CN201710028074A CN106763183A CN 106763183 A CN106763183 A CN 106763183A CN 201710028074 A CN201710028074 A CN 201710028074A CN 106763183 A CN106763183 A CN 106763183A
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- China
- Prior art keywords
- magnet
- annular magnet
- annular
- permanent
- gyroscopic effect
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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
-
- 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
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
Abstract
The present invention proposes a kind of permanent-magnet suspension bearing based on gyroscopic effect, including rotating shaft, two groups of magnet groups installed in the rotating shaft two ends；The magnet group includes being fixed on first annular magnet, second annular magnet of stator side, and the 3rd annular magnet for being fixed on rotor-side；The first annular magnet and the upper and lower interval setting of the second annular magnet, second annular magnet is coaxially arranged concentrically with the 3rd annular magnet, the second annular magnet internal diameter size is more than the 3rd annular magnet outside dimension, the first annular magnet axially repels with the 3rd annular magnet, and second annular magnet radially repels with the 3rd annular magnet.Permanent-magnet suspension bearing of the invention is axially and radially being respectively provided with certain bearing capacity, and energy is provided not against external field, and the permanent magnetic suspending shaft bearing structure of super low-power consumption is realized using gyroscopic effect.
Description
Technical field
The present invention relates to machine components technical field, and in particular to a kind of bearing, more particularly relate to a kind of based on gyro
The permanent-magnet suspension bearing of effect.
Background technology
At present, permanent-magnet suspension bearing has radial and axial two kinds, and its structure is：Radial suspension bearing is by of different sizes two
Individual annular magnetic ring group is into bead is enclosed within big magnet ring, and two ring length are the same, and equal axial charging, direction is identical, between two rings
Repulsion produces radial load, reaches the effect of radial suspension；Axial suspension bearing is made up of size identical magnet ring, left and right or upper and lower
Coaxial concentric arrangement, equal axial charging and in opposite direction, the repulsion generation axial force between two rings, play the work of axial suspension
With.
1839, British scientist Samuel Earnshaw theoretically demonstrated magnetostatic what is be only made up of permanent magnet
Magnet can not possibly realize stable equilibrium in all frees degree in.Therefore, current Permanent-magnet bearing is to realize stable suspersion
Must be suspended by electromagnetic bearing or super-conductive magnetic suspension bearing or diamagnetism at least in one degree of freedom, cannot otherwise hanged completely
It is floating.Earnshaw theorems think that static permanent magnet suspension can not possibly reach stable equilibrium, and using the magnetic suspension wipping top of gyroscopic effect,
Then prove to exceed critical value when rotating speed, rotary body can realize the permanent magnet suspension of stabilization.It can be seen that, gyroscopic effect is determined with Earnshaw
Reason is coexisting.
In view of this, it is special to propose the present invention.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the invention to propose a kind of permanent-magnet suspension bearing based on gyroscopic effect.Concrete technical scheme
It is as follows：
A kind of permanent-magnet suspension bearing based on gyroscopic effect, including rotating shaft, it is symmetrically mounted on two groups of the rotating shaft two ends
Magnet group；The magnet group includes being fixed on first annular magnet, second annular magnet of stator side, and is fixed on rotor-side
The 3rd annular magnet；The first annular magnet and the upper and lower interval setting of the second annular magnet, second annular magnetic
Iron is coaxially arranged concentrically with the 3rd annular magnet, and the second annular magnet internal diameter size is more than the 3rd annular magnet
Outside dimension, the first annular magnet and the 3rd annular magnet axially repel, second annular magnet and described the
Three annular magnetics are radially repelled.
According to the permanent-magnet suspension bearing based on gyroscopic effect that the present invention is provided, what it was produced when utilizing rotor to rotate at a high speed
Gyroscopic couple bears the micro unbalanced moments and moment of face of full Permanent-magnet bearing system, it is axially and radially being respectively provided with necessarily
Bearing capacity, when rotary body rotating speed is higher than critical speed, can provide energy not against external field, and ultralow work(is realized using gyroscopic effect
The permanent magnet suspension of consumption.And magnet, less than magnet quality in stator, makes the reduction of rotor relative density in rotor, raising that can be relative
The energy density of device, and increased the load capacity that unit magnet can be provided.
In addition, the permanent-magnet suspension bearing based on gyroscopic effect according to the above embodiment of the present invention, can also have as follows
Additional technical characteristic：
An example of the invention, is additionally included in the protection axle protected to device when stator is in contact with rotor
Hold, the protection bearing is arranged on permanent-magnet suspension bearing and/or between stator and rotor.
An example of the invention, the protection bearing includes radially protection bearing and axially protection bearing, described
Radially protection bearing is arranged on the inner ring of the first annular magnet, and the axially protection bearing is arranged on stator side and/or turns
Sub- side.
An example of the invention, the first annular magnet and second annular magnet, the 3rd annular magnet
The position of the unit of composition is interchangeable.
An example of the invention, the magnet group includes multiple first annular magnet and the second annular magnet, the
The list of the unit of three annular magnets composition, the first annular magnet and second annular magnet, the 3rd annular magnet composition
Staggeredly interval is laid for unit.
An example of the invention, the magnet group includes a first annular magnet and two group of second annular magnetic
The unit of iron, the 3rd annular magnet composition, the first annular magnet is placed in two group of second annular magnet, the 3rd annular magnetic
Between the unit of iron composition.
An example of the invention, the magnet group includes two first annular magnet and one group of second annular magnetic
The unit of iron, the 3rd annular magnet composition, second annular magnet, the unit of the 3rd annular magnet composition are placed in described two
Between first annular magnet.
An example of the invention, the material of the magnet group includes permanent magnet.
An example of the invention, the permanent magnet is alloy permanent magnet.
An example of the invention, second annular magnet coordinates with the 3rd annular magnet gap.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Fig. 1 is the structural representation of the permanent-magnet suspension bearing based on gyroscopic effect of an embodiment of the present invention；
Fig. 2 is the structural representation of the permanent-magnet suspension bearing based on gyroscopic effect of another kind embodiment of the invention；
Fig. 3 is the structural representation of the permanent-magnet suspension bearing based on gyroscopic effect of another embodiment of the present invention；
Fig. 4 is the structural representation of the permanent-magnet suspension bearing based on gyroscopic effect of another embodiment of the present invention；
Fig. 5 is the structural representation of the permanent-magnet suspension bearing based on gyroscopic effect of another embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings the permanent-magnet suspension bearing based on gyroscopic effect of the invention is described in detail.
With reference to shown in accompanying drawing 1-5, the invention provides a kind of permanent-magnet suspension bearing based on gyroscopic effect, its basic system
For rotating shaft 6, two groups of magnet groups at rotating shaft two ends are symmetrically mounted on, the structure of two groups of magnet groups is identical, and on the center of rotating shaft 6
Symmetrically.
The base form of the magnet group of the present embodiment can as illustrated in fig. 1 and 2, and it includes that be fixed on stator (does not show in figure
Go out) first annular magnet 1, second annular magnet 2 of side, and the 3rd annular magnet for being fixed on rotor (not shown) side
3；The annular magnet of first annular magnet 1 and second interval setting about 2, i.e., between the first annular annular magnet 2 of magnet 1 and second
Certain mounting distance is reserved, the second annular magnet 2 and the 3rd annular magnet 3 are coaxially arranged concentrically, can regard as the second ring
Shape magnet 2 is set in outside the 3rd annular magnet 3, between the inner ring of the second annular magnet 2 and the outer ring of the 3rd annular magnet 3 are
Gap coordinates.
The relative position of the annular magnet 2 of first annular magnet 1 and second of the present embodiment can be with as shown in figure 1, the first ring
Shape magnet 1 is in the outside of the second annular magnet 2, it is also possible to as shown in Fig. 2 first annular magnet 1 is in the second annular magnet 2
Side, " inside and outside " here is referred to apart from the near, remote of spindle central.That is the annular magnet of first annular magnet 1 and second
2nd, the position of the unit of the composition of the 3rd annular magnet 3 is interchangeable.
The magnetic pole distribution of the present embodiment and direction as illustrated in fig. 1 and 2 (in figure arrow be the direction of magnetization), first annular magnet
1 with the equal axial charging of the 3rd annular magnet 3 and magnetizing direction is opposite, there is provided axial repulsive force, the second annular magnet 2 and the 3rd ring
The equal axial charging of shape magnet 3 and magnetizing direction is identical, there is provided radial direction repulsive force.
The present embodiment be based on gyroscopic effect permanent-magnet suspension bearing, the gyroscopic couple produced during using rotor high-speed rotation come
The micro unbalanced moments and moment of face of full Permanent-magnet bearing system are born, rotor can realize dynamic after exceeding minimum critical speed
Stable suspersion, more suitable for high-speed rotating machine support, is axially and radially being respectively provided with certain bearing capacity, can be not against external field
Energy is provided and realizes stable suspersion, the fatigue loss of rotor magnet is reduced in use；Improve the overall appearance of rotor
Perhaps tensile strength and density ratio, (magnet density ratio composite is big, and magnet is few in rotor, the reduction of rotor relative density)；Increase
The load capacity for having added unit magnet can be provided.
Specifically, in the present embodiment, being additionally included in the protection axle protected to device when stator is in contact with rotor
Hold, protection bearing is arranged on permanent-magnet suspension bearing and/or between stator and rotor.Protection bearing is mainly risen static
Or when starting rotor support, or the catastrophic collapse that rotor and stator surprisingly collide and cause is avoided when running at high speed.Turn
Son is rotated on when below critical speed, and radially protection bearing is contacted with axle.Rotor is rotated during to more than critical speed, and rotor can lead to
Cross gyroscopic effect to realize suspending, now rotor is not contacted with bearing is protected, and air drag is only existed between rotor and stator.Ensureing
In the case of vacuum, then the energy loss almost brought without bearing when rotor rotates.
Specifically, in the present embodiment, as shown in figure 1, protection bearing includes radially protection bearing 4 and axially protection bearing
5, radially installed in the inner ring of first annular magnet 1, axial direction protects bearing 5 to be arranged on stator side and/or rotor to protection bearing 4
Side, protection bearing position in the example shown is only an example certainly, as long as the installation site of protection bearing can be played
The effect stated, it may be mounted at optional position, does not repeat excessively here.
Specifically, in the present embodiment, the structure type of the permanent-magnet suspension bearing based on gyroscopic effect is not unique, except figure
Outside two kinds of structures of 1 and Fig. 2, a first annular magnet 1 and two group of second annular magnet can also be included such as Fig. 3, magnet group
2nd, the unit of the composition of the 3rd annular magnet 3, first annular magnet 1 is placed in two group of second annular magnet 2,3 groups of the 3rd annular magnet
Into unit between.Again for example, as shown in figure 4, magnet group can also include two first annular magnet 1 and one group of second annular
The unit of magnet 2, the 3rd annular magnet 3 composition, the second annular magnet 2, the unit of the composition of the 3rd annular magnet 3 are placed in two the
Between one annular magnet 1, the structure type of the permanent-magnet suspension bearing of the present embodiment can make many according to the difference of loading condition
The adjustment in structure is planted, as shown in figure 5, one group of magnet group can be set in rotating shaft upper end, two groups of magnets is set in rotating shaft lower end
Group, certainly, the form of magnet group is not unique, does not enumerate here.
Specifically, in the present embodiment, the material of magnet group includes permanent magnet, i.e., first annular magnet, the second annular magnetic
Iron, the material of the 3rd annular magnet are permanent magnet, and favourable is alloy permanent magnet.More favourable, permanent magnet is neodymium-iron-boron
Iron, its magnetic with the maximum magnetic energy of storage and stabilization.
In sum, the permanent-magnet suspension bearing based on gyroscopic effect for being provided according to the present invention, it utilizes rotor to revolve at a high speed
The gyroscopic couple produced when turning bears the micro unbalanced moments and moment of face of full Permanent-magnet bearing system, makes it axially and radially
Certain bearing capacity is respectively provided with, energy is provided not against external field, the permanent-magnet suspension bearing of super low-power consumption is realized using gyroscopic effect
Magnet makes the reduction of rotor relative density less than magnet quality in stator in structure, and rotor, and the energy that can improve device is close
Degree, increased the load capacity that unit magnet can be provided.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " is meant that two or more, unless separately
There is clearly specific restriction.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element.For the ordinary skill in the art, can be according to specific feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.And, the specific features of description, structure, material or feature
Can in an appropriate manner be combined in any one or more embodiments or example.Additionally, in the case of not conflicting, this
The technical staff in field can be by the different embodiments or example described in this specification and the spy of different embodiments or example
Levy and be combined and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of permanent-magnet suspension bearing based on gyroscopic effect, it is characterised in that including rotating shaft, be symmetrically mounted on the rotating shaft two
Two groups of magnet groups at end；The magnet group includes being fixed on first annular magnet, second annular magnet of stator side, and fixed
In the 3rd annular magnet of rotor-side；The first annular magnet and the upper and lower interval setting of the second annular magnet, described
Second ring magnet is coaxially arranged concentrically with the 3rd annular magnet, and the second annular magnet internal diameter size is more than the described 3rd
Annular magnet outside dimension, the first annular magnet axially repels with the 3rd annular magnet, second annular magnet
Radially repel with the 3rd annular magnet.
2. the permanent-magnet suspension bearing based on gyroscopic effect according to claim 1, it is characterised in that be additionally included in stator with
The protection bearing protected to device when rotor is in contact, the protection bearing is arranged on permanent-magnet suspension bearing and/or pacifies
Between stator and rotor.
3. the permanent-magnet suspension bearing based on gyroscopic effect according to claim 2, it is characterised in that the protection bearing bag
Radially protection bearing and axially protection bearing are included, the radial direction protection bearing is arranged on stator side and/or rotor-side, the axial direction
Protection bearing is arranged on stator side and/or rotor-side.
4. the permanent-magnet suspension bearing based on gyroscopic effect according to claim 1, it is characterised in that the first annular magnetic
Iron is interchangeable with the position of the unit that second annular magnet, the 3rd annular magnet are constituted.
5. the permanent-magnet suspension bearing based on gyroscopic effect according to claim 1, it is characterised in that the magnet group includes
Multiple first annular magnet and the second annular magnet, the unit of the 3rd annular magnet composition, the first annular magnet and described
Second annular magnet, the unit of the 3rd annular magnet composition interlock to be spaced and lay.
6. the permanent-magnet suspension bearing based on gyroscopic effect according to claim 5, it is characterised in that the magnet group includes
One first annular magnet and two group of second annular magnet, the unit of the 3rd annular magnet composition, the first annular magnet are put
Between the unit that two group of second annular magnet, the 3rd annular magnet are constituted.
7. the permanent-magnet suspension bearing based on gyroscopic effect according to claim 5, it is characterised in that the magnet group includes
Two first annular magnet and one group of second annular magnet, the unit of the 3rd annular magnet composition, second annular magnet, the
The unit of three annular magnets composition is placed between described two first annular magnet.
8. the permanent-magnet suspension bearing based on gyroscopic effect according to claim any one of 1-7, it is characterised in that the magnetic
The material of body group includes permanent magnet.
9. the permanent-magnet suspension bearing based on gyroscopic effect according to claim 8, it is characterised in that the permanent magnet is to close
Golden permanent magnet.
10. the permanent-magnet suspension bearing based on gyroscopic effect according to claim any one of 1-7, it is characterised in that described
Second annular magnet coordinates with the 3rd annular magnet gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028074.XA CN106763183A (en) | 2017-01-12 | 2017-01-12 | Permanent-magnet suspension bearing based on gyroscopic effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028074.XA CN106763183A (en) | 2017-01-12 | 2017-01-12 | Permanent-magnet suspension bearing based on gyroscopic effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763183A true CN106763183A (en) | 2017-05-31 |
Family
ID=58945701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710028074.XA Pending CN106763183A (en) | 2017-01-12 | 2017-01-12 | Permanent-magnet suspension bearing based on gyroscopic effect |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2288305Y (en) * | 1996-03-28 | 1998-08-19 | 江苏理工大学 | Magnetic suspension bearing |
| CN101799045A (en) * | 2009-02-06 | 2010-08-11 | 卓向东 | Anti-offcenter magnetic suspension bearing |
| CN101825140A (en) * | 2010-05-21 | 2010-09-08 | 江苏大学 | Permanent magnet suspension bearing |
| CN201779144U (en) * | 2010-07-05 | 2011-03-30 | 王瑞琪 | Permanent magnet suspension thrust bearing |
| CN202612391U (en) * | 2012-02-28 | 2012-12-19 | 上海大学 | Five-freedom-degree all-permanent-magnet suspension bearing rotor system |
| US20150130313A1 (en) * | 2010-07-19 | 2015-05-14 | Peter S. Aronstam | Method and Apparatus For Hybrid Suspension System |
| CN206377149U (en) * | 2017-01-12 | 2017-08-04 | 陈科枫 | Permanent-magnet suspension bearing based on gyroscopic effect |
-
2017
- 2017-01-12 CN CN201710028074.XA patent/CN106763183A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2288305Y (en) * | 1996-03-28 | 1998-08-19 | 江苏理工大学 | Magnetic suspension bearing |
| CN101799045A (en) * | 2009-02-06 | 2010-08-11 | 卓向东 | Anti-offcenter magnetic suspension bearing |
| CN101825140A (en) * | 2010-05-21 | 2010-09-08 | 江苏大学 | Permanent magnet suspension bearing |
| CN201779144U (en) * | 2010-07-05 | 2011-03-30 | 王瑞琪 | Permanent magnet suspension thrust bearing |
| US20150130313A1 (en) * | 2010-07-19 | 2015-05-14 | Peter S. Aronstam | Method and Apparatus For Hybrid Suspension System |
| CN202612391U (en) * | 2012-02-28 | 2012-12-19 | 上海大学 | Five-freedom-degree all-permanent-magnet suspension bearing rotor system |
| CN206377149U (en) * | 2017-01-12 | 2017-08-04 | 陈科枫 | Permanent-magnet suspension bearing based on gyroscopic effect |
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Application publication date: 20170531 |
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