CN205677978U - A kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing - Google Patents
A kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing Download PDFInfo
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- CN205677978U CN205677978U CN201620548204.3U CN201620548204U CN205677978U CN 205677978 U CN205677978 U CN 205677978U CN 201620548204 U CN201620548204 U CN 201620548204U CN 205677978 U CN205677978 U CN 205677978U
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- side stator
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Abstract
The utility model discloses a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing, including stator, rotor core, described stator includes left side stator core, right side stator core, it is provided with annular permanent magnet between left side stator core and right side stator core, be provided with every magnetic aluminium ring in the upper wall surface of left side stator core, the right side stator core toroidal cavity with annular permanent magnet composition；Left side stator core, right side stator core are all in E shape structure, and rotating around being formed with control winding in stator slot, control winding energising produces control magnetic flux；The utility model efficiently solves the deficiency of existing axial magnetic bearing, provides one control, manufacture and assembly simple, and control magnetic flux, without permanent magnet and rotor axial iron core, can produce the low-power consumption single-degree-of-freedom axial magnetic bearing of bigger axial suspension power.
Description
Technical field
The utility model relates to bearing mnanufacture technical field, and particularly one controls, manufacture and assembly are simple, control magnetic flux
Without permanent magnet and rotor axial iron core, the low power consumption permanent magnet biased single-degree-of-freedom axial magnetic of bigger axial suspension power can be produced
Bearing.
Background technology
Magnetic bearing is to utilize the electromagnetic force between stator and rotor by rotor suspension in space, makes not have between stator and rotor
A kind of novel high-performance bearing of Mechanical Contact.Owing to there is not Mechanical Contact between stator and rotor, so magnetic suspension bearing supports
Suspension rotor can reach very high operating rotating speed, and have that mechanical abrasion, energy consumption be low, life-span length, without lubrication, without dirty
The advantages such as dye, are particularly suitable at a high speed or ultrahigh speed directly drive field.
At present, magnetic bearing is divided into following three kinds according to the mode that magnetic force provides:, active magnetic bearings, miscarried by biased electrical
Raw bias magnetic field, the control magnetic flux that control electric current produces is overlapped mutually with biasing magnetic flux, thus produces controlled suspending power, this kind
Magnetic bearing volume, weight and power consumption are all bigger；, passive magnetic bearing, suspending power is provided by permanent magnet completely, required control
Device is simple, and suspension power consumption is little, but rigidity and damping are all less, typically apply to support only in one direction object or
Mitigate the load acting on traditional bearing；, hybrid magnetic bearing, be the electromagnetism using permanent-magnet material to substitute in active magnetic bearings
Iron produces bias magnetic field, and control electric current only provides balanced load or the control magnetic flux of interference, greatly reduces the work(of magnetic bearing
Rate is lost, and reduces the volume of magnetic bearing, mitigates its weight, and improve bearing capacity.
At present, different according to permanent-magnetic biased axial magnetic bearing version, three kinds can be divided into,, permanent magnet be placed in turn
In Zi, its installation difficulty is caused to increase, the lifting of rotor strength its rotating speed of lower limit；, that suspension rotor is placed in by magnetic bearing is fixed
The both sides of son, axial length is long, and critical speed is low；, axially control magnetic flux passes through permanent magnet in magnetic bearing, is bright to permanent magnet
Aobvious demagnetizing effect, leakage field is relatively big, and the magnetic resistance of permanent magnet is big, results in electric current needed for identical axial suspension power big, work(
Consumption height, its applied field field is restricted.
Content of the invention
The technical problems to be solved in the utility model is to provide a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing, this
Utility model efficiently solves the deficiency of existing axial magnetic bearing, provides one control, manufacture and assembly simple, and control magnetic flux is not
Through permanent magnet and rotor axial iron core, the low-power consumption single-degree-of-freedom axial magnetic bearing structure of bigger axial suspension power can be produced.
The utility model is achieved through the following technical solutions:
A kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing, including stator, rotor core (11), it is characterised in that:
Described rotor core (11) includes axial component, radial component；Described stator includes the axial component along rotor core (11), and
It with the radial component of rotor core (11) as symmetrical centre, is symmetrically arranged with left side stator core (1), right side stator core (4),
It is provided with annular permanent magnet (3), left side stator core (1), right side between left side stator core (1) and right side stator core (4)
It is provided with every magnetic aluminium ring (2) in the upper wall surface of the toroidal cavity that stator core (4) and annular permanent magnet (3) form；Left side stator
Iron core (1), right side stator core (4), all in E shape structure, rotating around being formed with control winding (12) in stator slot, control winding
(12) energising produces control magnetic flux (the 16th, 17).
The further Technological improvement plan of the utility model is:
The suction disk (the 5th, 9 that described left side stator core (1), right side stator core (4) are arranged by upper and lower position；6、
10) and centre position arrange control disk (the 7th, 8) constitute, control winding (12) be wound in suction disk (the 5th, 9；6th, 10) with
Between control disk (the 7th, 8).
The further Technological improvement plan of the utility model is:
Gas length between described control disk (the 7th, 8) and rotor core (11) radial component is more than suction disk (the 5th,
9；6th, 10) gas length and between rotor core (11) radial component, and suction disk (the 5th, 9；6th, 10) and rotor core
(11) gas length between radial component is less than left side stator core (1) and right side stator core (4) and rotor core (11)
Gas length between axial component.
The further Technological improvement plan of the utility model is:
Described annular permanent magnet (3) is the annular permanent magnet of axial charging, provides axialy offset magnetic flux for magnetic bearing.
The further Technological improvement plan of the utility model is:
It described is made up of monoblock aluminium every magnetic aluminium ring (2), reduce leakage field.
The further Technological improvement plan of the utility model is:
Described left side stator core (1), right side stator core (4), rotor core (11) all use have good axially and
The material of radial guiding magnetic property is made.
The further Technological improvement plan of the utility model is:
Described annular permanent magnet (3) is that rare earth permanent-magnetic material is made.
The utility model compared with prior art, has a following obvious advantage:
First, the permanent magnet bias single-degree-of-freedom axial magnetic bearing that the utility model proposes, is by the annular of an axial magnetized
Permanent magnet provides biasing magnetic flux, and control winding produces left and right side control magnetic flux, the control magnetic flux at corresponding air gap and biasing magnetic flux
It is overlapped mutually, by axial displacement closed-loop control, it is ensured that between stator and rotor, air gap is uniform, it is achieved rotor axial stable suspersion；
2nd, the utility model every magnetic aluminium environmental protection card control magnetic flux without permanent magnet, and reduce leakage field；
3rd, the utility model left and right side stator core all makes E type structure, and control magnetic flux is through suction disk, control circle
The radial component of dish, left side stator core, the axial working gas gap in left side and rotor core forms closed path；Control magnetic flux passes through
Suction disk), control disk, right side stator core, the radial component of the axial working gas gap in right side and rotor core form Guan Bi
Path, without the big permanent magnet of magnetic resistance and rotor core axial component, has and can produce bigger axial suspension power, low work(
Advantages such as consuming, control simply and be easily achieved.
The utility model can be widely used for flywheel energy storage, various high-speed machine tool spindle motor and canned pump class, centrifuge, pressure
The fields such as contracting machine, high-speed small-size hard disk drive.
Brief description
Fig. 1 is the utility model permanent magnet bias single-degree-of-freedom axial magnetic bearing structural representation.
Fig. 2 is the utility model permanent magnet bias single-degree-of-freedom axial magnetic bearing magnetic circuit schematic diagram.
Detailed description of the invention
The utility model based on principle be: the annular permanent magnet of axial magnetized 3 is to permanent magnet bias single-degree-of-freedom axial magnetic
Bearing provides quiescent biasing magnetic flux 13, be divided into two parts by suction disk 6 and 10 enter on the right side of axial working gas gap, then by left side
Suction disk 5 and 9 on the left of axial working gas gap entrance, the left side control magnetic flux 16 that control winding 12 energising produces and right side control
Magnetic flux 17 plays regulatory role, and is used for changing the power of magnetic bearing rotor core 11 radial component axial both sides air-gap field, passes through
Displacement closed-loop control, keep stator and rotor axially between air gap uniform, it is achieved rotor axial stable suspersion.
As it is shown in figure 1, the present invention is by left side stator core the 1st, every magnetic aluminium ring the 2nd, annular permanent magnet the 3rd, right side stator core the 4th,
Rotor core 11 forms；Left side stator core 1 makes E type structure, and middle is suction disk 5 for control disk the 7th, upper and lower position
With 9, in suction disk the 5th, embedded control winding 12 between 9 and control disk 7, control magnetic flux 16 and right side control on the left of energising generation
Magnetic flux 17 processed；Right side stator core 4 also makes E type structure, and middle is suction disk 6 and 10 for control disk the 8th, upper and lower position,
At suction disk the 6th, embedded control winding 12 between 10 and control disk 8, suction disk the 5th, 9；6th, 10 with rotor core 11 radially
Gas length between part is less than control disk the 7th, the gas length between 8 and rotor core 11 radial component, and suction circle
Dish the 5th, 9；6th, the gas length between 10 and rotor core 11 radial component is less than left side stator core 1 and right side stator core 4
And the gas length between rotor core 11 axial component；Left side stator core the 1st, right side stator core the 4th, rotor core 11 by
Axially and radially the good material of magnetic property is made, and annular permanent magnet 3 uses axial magnetized, is arranged on left side stator core 1
And between right side stator core 4, producing quiescent biasing magnetic flux 13, four control windings 12 can use coiling side as shown in Figure 1
Formula is in series, it is only necessary to an inverter just can realize controlling the regulation of electric current.
As in figure 2 it is shown, the N of the annular permanent magnet 3 of axial magnetized is extremely near right side stator core 4 side, then the present invention is forever
Magnetic bias magnetic circuit is: quiescent biasing magnetic flux 13, from the N pole of annular permanent magnet 3, is divided into two through right side stator core 4
Point, axial working gas gap, rotor core 11 radial component, the axial work gas in left side on the right side of suction disk 6 and 10 enters respectively
Gap, suction disk 5 and the 9th, left side stator core 1, the S pole returning to annular permanent magnet 3 forms closed magnetic circuit, such as the dotted line in Fig. 2；
Left side control magnetic flux 16 and right side that control winding 12 produces control the solid line in magnetic flux 17 such as Fig. 2, and left side controls magnetic flux 16 warp
Cross suction disk 5 and the 9th, control the radial component of disk the 7th, the axial working gas gap in left side stator core the 1st, left side and rotor core 11
Form closed path；Control magnetic flux 17 in right side is axial through suction disk 6 and the 10th, control disk the 8th, right side stator core the 4th, right side
The radial component of working gas gap and rotor core 11 forms closed path, due to every magnetic aluminium ring 2, it is ensured that control magnetic flux is without ring
Shape permanent magnet, reduces leakage field, reduces power consumption and increase axial suspension power.
This permanent magnet bias single-degree-of-freedom axial magnetic bearing utilizes the annular permanent magnet 3 of an axial charging to set up biasing
Magnetic flux, stator and rotor iron core made by the good material of axially and radially magnetic property, and annular permanent magnet uses axial magnetized,
Annular permanent magnet 3 is radially annulus forever, magnetizes vertically, uses the rare-earth permanent magnet that magnetic property is good or ferrite permanent magnet,
Control winding 12 is invaded after all using the solenoid coiling of well conducting and is painted drying and form.
Technological means disclosed in the utility model scheme is not limited only to the technological means disclosed in above-mentioned embodiment, also
Including above technical characteristic is combined formed technical scheme.It should be pointed out that, the ordinary skill for the art
For personnel, on the premise of without departing from the utility model principle, can also make some improvements and modifications, these improve and profit
Decorations are also considered as protection domain of the present utility model.
Claims (7)
1. a novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing, including stator, rotor core (11), it is characterised in that: institute
State rotor core (11) and include axial component, radial component；Described stator includes the axial component along rotor core (11), and with
The radial component of rotor core (11) is symmetrical centre, is symmetrically arranged with left side stator core (1), right side stator core (4), left
Being provided with annular permanent magnet (3) between side stator core (1) and right side stator core (4), left side stator core (1), right side are fixed
It is provided with every magnetic aluminium ring (2) in the upper wall surface of the toroidal cavity that sub-iron core (4) and annular permanent magnet (3) form；Left side stator iron
Core (1), right side stator core (4), all in E shape structure, rotating around being formed with control winding (12) in stator slot, control winding (12)
Energising produces control magnetic flux (the 16th, 17).
2. a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing according to claim 1, it is characterised in that: a described left side
The suction disk (the 5th, 9 that side stator core (1), right side stator core (4) are arranged by upper and lower position；6th, 10) and interposition
The control disk (the 7th, 8) installing is constituted, and control winding (12) is wound in suction disk (the 5th, 9；6th, 10) with control disk (the 7th, 8)
Between.
3. a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing according to claim 2, it is characterised in that: described control
Gas length between rounding dish (the 7th, 8) and rotor core (11) radial component is more than suction disk (the 5th, 9；6th, 10) with rotor iron
Gas length between core (11) radial component, and suction disk (the 5th, 9；6th, 10) and between rotor core (11) radial component
Gas length is less than the air gap between left side stator core (1) and right side stator core (4) and rotor core (11) axial component
Length.
4. a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing according to claim 1 and 2, it is characterised in that: institute
State the annular permanent magnet that annular permanent magnet (3) is axial charging, provide axialy offset magnetic flux for magnetic bearing.
5. a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing according to claim 1 and 2, it is characterised in that: institute
State and be made up of monoblock aluminium every magnetic aluminium ring (2), and reduce leakage field.
6. a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing according to claim 1 and 2, it is characterised in that: institute
State left side stator core (1), right side stator core (4), rotor core (11) all use has well axially and radially magnetic conductivity
The material of energy is made.
7. a kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing according to claim 4, it is characterised in that: described ring
Shape permanent magnet (3) is that rare earth permanent-magnetic material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548204.3U CN205677978U (en) | 2016-06-08 | 2016-06-08 | A kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548204.3U CN205677978U (en) | 2016-06-08 | 2016-06-08 | A kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing |
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| Publication Number | Publication Date |
|---|---|
| CN205677978U true CN205677978U (en) | 2016-11-09 |
Family
ID=57433997
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620548204.3U Expired - Fee Related CN205677978U (en) | 2016-06-08 | 2016-06-08 | A kind of novel permanent magnetic biasing single-degree-of-freedom axial magnetic bearing |
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| CN (1) | CN205677978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840655A (en) * | 2016-06-08 | 2016-08-10 | 淮阴工学院 | Novel permanent magnet bias single-degree-of-freedom axial magnetic bearing |
-
2016
- 2016-06-08 CN CN201620548204.3U patent/CN205677978U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840655A (en) * | 2016-06-08 | 2016-08-10 | 淮阴工学院 | Novel permanent magnet bias single-degree-of-freedom axial magnetic bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191105 Address after: 223441 No.9 Xiangyun Road, economic development zone, Lianshui County, Huai'an City, Jiangsu Province Patentee after: Huaian Zhong Yi Motor Co., Ltd. Address before: 223005 Jiangsu city in Huaian Province, while the economic and Technological Development Zone, Road No. 1 Patentee before: Huaijin Polytechnical College |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20210608 |