CN105257698B - A kind of single-degree-of-freedom magnetic suspension rotor support system and magnetic centering bearing - Google Patents
A kind of single-degree-of-freedom magnetic suspension rotor support system and magnetic centering bearing Download PDFInfo
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- CN105257698B CN105257698B CN201410342683.9A CN201410342683A CN105257698B CN 105257698 B CN105257698 B CN 105257698B CN 201410342683 A CN201410342683 A CN 201410342683A CN 105257698 B CN105257698 B CN 105257698B
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Abstract
The invention discloses a kind of single-degree-of-freedom magnetic suspension rotor support system, it is formed by being arranged on the radial magnetic bearing on electric machine main shaft top and the prestressing force magnetic suspension composite bearing of electric machine main shaft bottom, stator department magnet ring among the stator department magnet ring and repulsion type footpath axial magnetic suspension bearing of radial magnetic bearing among the main shaft bottom prestressing force magnetic suspension composite bearing is arranged on same stator basal disc, and the stator basal disc is connected with casing；Rotor portions magnet ring among the rotor portions magnet ring and repulsion type footpath axial magnetic suspension bearing of radial magnetic bearing among the main shaft bottom prestressing force magnetic suspension composite bearing is co-located on rotor basal disc (209), and the rotor basal disc is connected with main shaft；The mechanical protection bearing (212,213) of sliding pair cooperation is additionally provided between the upper and lower side of the main shaft and the end cap up and down of motor.
Description
Technical field：
The present invention relates to a kind of single-degree-of-freedom magnetic suspension rotor support system and suitable for single-degree-of-freedom magnetic suspension rotor branch
The magnetic centering bearing that support system uses.
Background technology：
The present invention is the new construction and new method to improving magnetic suspension rotor axle centering running accuracy.
The content of the invention：
1st, a kind of single-degree-of-freedom magnetic suspension rotor support system, suitable for magnetic suspension platform, electro spindle, molecular pump, wind-force
The device that generator etc. has rotor vertical shaft uses；It is to set two prestressing force magnetic suspension composite bearings (16-37) respectively
On the position of the close end up and down of the vertical shaft, the prestressing force magnetic suspension composite bearing refers to：By a repulsion type journal axle
To magnetic suspension bearing and an axial attraction type radial magnetic bearing with the (institute of Fig. 1-9,11,16 of arranged radially inside and outside concentric circles
Show) or radial misalignments arrangement (as shown in Figure 10) the composite magnetic suspension bearing structure that is formed of mode；In same prestressing force
Among magnetic suspension composite bearing, rotor portions annular permanent magnet (81) and axial attraction type on the axial magnetic suspension bearing of repulsion type footpath
The rotor portions annular permanent magnet (82,83) of radial magnetic bearing is co-located on same rotor basal disc (84-105), institute
Rotor basal disc is stated to be connected with the vertical shaft；The stator department annular permanent magnet (107) or annulus of repulsion type footpath axial magnetic suspension bearing
The stator department annular permanent magnet of shape electromagnet coil (108,109) and the axial attraction type radial magnetic bearing (110,
111) it is arranged on same stator basal disc (112-131), can also be by the stator department ring of repulsion type footpath axial magnetic suspension bearing
Shape permanent magnet and annular electromagnet coil are arranged on the inwall (shown in Fig. 2,6,7) of vertical shaft periphery housing；In order to save material
Material, partial stator basal disc can also with vertical shaft peripheral fixture end cap (112,115,116,124,126,135,134,
122nd, 202,132,133,121) carry out it is compound, so as to turn into compound stator basal disc, the stator basal disc and compound stator basal disc
It is connected with the stator case of vertical shaft periphery；The rotor portion annular permanent magnet of the axial attraction type radial magnetic bearing
It is axially opposing by air gap and make the annular permanent magnet quantity corresponding to axial direction equal and attract each other and there is same size
Internal-and external diameter；The interior flux direction of rotor portion annular permanent magnet among the axial magnetic suspension bearing of the repulsion type footpath is mutual
The consistent and partially radially overlapping intersection that is formed by air gap between magnet and make air gap both sides magnet contour and there is identical
Volume；When the magnetic field sources that air gap side uses are annular electromagnet coil (5051), then the annular electromagnetism iron wire is required
Circle is contour with the rotor portions annular permanent magnet of air gap offside；It is described to repel each other among same prestressing force magnetic suspension composite bearing
Suffered by thrust suffered by the rotor portions of type footpath axial magnetic suspension bearing and the axial attraction type radial magnetic bearing rotor portions
Pulling force is opposite；For the axial attraction type radial direction magnetcisuspension among two prestressing force magnetic suspension composite bearings of the vertical shaft top and the bottom
For floating axle is held, both are consistent to pulling force caused by system rotor portion；What the prestressing force magnetic suspension composite bearing used
Annular permanent magnet uses axial charging；Stator basal disc and rotor basal disc among the prestressing force magnetic suspension composite bearing and
Each annular permanent magnet set on rotor basal disc keeps concentric with vertical shaft and vertical shaft is non-contactly passed through end cap and compound
Centre bore on stator basal disc；Among described single-degree-of-freedom magnetic suspension rotor support system, there is the magnetic force of identical function
(Fig. 1,7 shown in) is used interchangeably between bearing or superposition uses, repulsion type footpath axial magnetic suspension bearing and axial attraction type
The position of radial magnetic bearing can also exchange exchange (Fig. 4,9 shown in)；Described single-degree-of-freedom magnetic suspension rotor support system
Central magnetic centering bearing also can be considered axial attraction type radial magnetic bearing；And motor is also considered as the magnetic resistance of prior art
Type radial direction attraction type axial magnetic suspension bearing；Among described single-degree-of-freedom magnetic suspension rotor support system, at least one institute
The rotor magnetic pole pole-face for stating axial attraction type radial magnetic bearing is provided with non-magnetic anti-sticking dead spacer (Fig. 4,10 institutes
Show)；
Among the present invention, the quantity positioned at the annular permanent magnet of central air gap both sides can be one (Fig. 1), two
(Fig. 1-4,6-8,10,11) or three (Fig. 9), all it is closely to be sleeved on one between each magnet when using multiple magnet combinations
Rise and adjacent magnets is kept contour and keep smooth uniformity of the adjacent magnets interior flux among closed-loop path；Described turn
Subbase disk and stator basal disc are made using non-magnet material.
Among the present invention, at the vertical shaft periphery stator case top or the end of bottom or top and the bottom without output shaft one end
Lid (116,132,133,121,124,134,135) centre is also provided with the axially outwardly extending cylindrical extension
(140-149,130), the shaft end end face of the vertical shaft and be arranged on inside cylindrical extension stator department cylinder (191-194,
182nd, 186, inner face 189) is formed axially opposing and by being embedded in vertical shaft axle end center hole and by axial direction by air gap
The solid cylindrical permanent magnet (Fig. 4-6) or annular permanent magnet or tight by a solid permanent magnet and an annular permanent magnet to magnetize
The close composite permanent magnet (Figure 10,12) for being set in together composition and identical structure on air gap offside stator department its center position
It is opposite to each other and attracts each other with the permanent magnet of quantity, so as to constitutes single-degree-of-freedom magnetic suspension rotor support system extensive use
Permanent-magnet type magnetic centering bearing (Fig. 4,5,6,10,12,14,15), the stator among the permanent-magnet type magnetic centering bearing
Portion's cylinder can use axial air-gap adjustable type (Fig. 4,5,6,10,12,14), air gap fixed (Figure 15) can also be used to tie
Structure, but air gap stationary structure, it is only limited to use in the case where vertical shaft upper and lower ends are without output shaft；It is described it is compound forever
Among magnet, opposite and volume is equal each other for the interior flux of radially adjoining permanent magnet；The axial position of the stator department cylinder
Air gap is adjusted, and can pass through the external screw thread that stator department cylinder bottom is set and the screw-internal thread fit on cylindrical extension inwall
(Figure 10,12,14) are realized, can also be by the bulb connecting rod (153) on stator department cylinder and cylindrical extension end cap
The threaded engagement of the opinion in heart hole is realized, can also be prolonged by the foot piece (150-152) being fixed on stator department cylinder with tubular
Leading screw connected mode (Fig. 5,6) between long portion's end cap central bore is realized.
Among the present invention, the permanent-magnet type magnetic centering bearing can also be by electromagnetic attraction type magnetic centering bearing (figure
8th, 13), substituted, the electromagnetic attraction type magnetic centering bearing is that an annular electromagnet coil is sleeved on into tubular to extend
On the center stem (136,137) of portion's end cap, the center stem is corresponding with the upper end of vertical shaft by axial air-gap, described
The magnetic pole strength of center stem can be plane (Figure 13), taper (Fig. 8) or truncated cone shape pole-face, the end of the vertical shaft can be with
The magnetic pole strength of described center stem forms the form of (Figure 13) or tapered pole face-to-face and, to the form of plane, may be used also
By be tapered pole to tapered pole (Fig. 8) in the form of；The electromagnetic attraction type magnetic centering bearing is real by the size for adjusting electric current
Now the thickness of axial working gas gap is adjusted.
Among the present invention, the stator department cylinder among the permanent-magnet type magnetic centering bearing can also be hollow cylinder
Body (Figure 14), the hollow cylinder have by the solid cylindrical permanent magnet (154) of axial charging, the hollow cylinder bottom
With external screw thread, the external screw thread realizes the fixed regulation with air gap with the screw-internal thread fit on cylindrical extension inwall.
Among the present invention, the stator department cylinder can also be by the solid cylindrical permanent magnet institute of an axial charging
Substitute, solid cylindrical permanent magnet is fixed by the end cap of the shoulder of cylindrical extension bottom and upper end, the solid cylinder
Air gap between shape permanent magnet and vertical shaft end is fixed (Figure 15).
Among the present invention, when the rotor basal disc of prestressing force magnetic suspension composite bearing is manufactured using non-magnet material,
The radially superposed intersection of interior outer magnetic ring can also be deviated from the rotor portion annular permanent magnet of repulsion type footpath axial magnetic suspension bearing
On end position, respectively set an inner flange type magnetic conduction yoke (157,158) and an outward flange formula magnetic conduction yoke (159,
160) and make two magnetic conduction yokes (157 and 159,160 and axially extending wall 158) along repulsion type footpath axial magnetic suspension bearing
Air gap between interior outer magnetic ring moves towards to be formed axially opposing (Fig. 9).
Among the present invention, mechanical guarantor can also be set between the end cap of the stator case of the vertical shaft and vertical shaft periphery
Bearing is protected, is coordinated between the mechanical protection bearing and vertical shaft using sliding pair.
Among the present invention, the phase made among the vertical shaft top prestressing force magnetic suspension composite bearing (35) can also be used
The stator department of the stator department annular permanent magnet of reprimand type footpath axial magnetic suspension bearing (56) and axial attraction type radial magnetic bearing
Permanent magnet is arranged on the top end cap (134) of the same electro spindle with cylindrical extension (145), the axial attraction type
Radial magnetic bearing passes through axial gas by the solid cylinder permanent magnet in the vertical shaft upper end center hole or composite permanent magnet
The corresponding solid cylinder permanent magnet in the cylindrical extension (145) end stator department cylinder (182) centre bore of gap
Or the permanent-magnet type magnetic centering bearing (Figure 10) that composite permanent magnet is formed is substituted；Repulsion type footpath axial magnetic suspension bearing
Rotor portions annular permanent magnet be arranged on the outside of vertical shaft (10), the permanent-magnet type magnetic centering bearing can also be by electromagnetic attraction type
Magnetic centering bearing (Fig. 8,13) is substituted；The repulsion type footpath axial magnetic suspension bearing (56) on the vertical shaft top can also be showed
The radial direction attraction type axial magnetic suspension bearing for having full permanent magnetism is substituted.
2nd, a kind of single-degree-of-freedom magnetic suspension rotor support system, by motor stator and rotor (207) shell (206) motor unshakable in one's determination
Main shaft (199) and the axial attraction type radial magnetic bearing being arranged on electric machine main shaft upper position and electric machine main shaft lower portion
The prestressing force magnetic suspension composite bearing put is formed（Figure 17）, the prestressing force magnetic suspension composite bearing passes through by upper and lower magnet ring
Axial air-gap attract each other composition radial magnetic bearing and the repulsion type footpath axial direction magnetic suspension shaft with concentric circles arranged radially
Hold (211) to be formed, the inside and outside magnet ring among the axial magnetic suspension bearing of the repulsion type footpath keeps axially wrong by radial air gap
Position, the inside and outside magnet ring is contour identical with interior flux direction, mutually exclusive so as to form；The main shaft bottom prestressing force magnetic
Suspension composite shaft take in radial magnetic bearing stator department magnet ring and repulsion type footpath axial magnetic suspension bearing among determine
Sub-portion magnet ring is arranged on same stator basal disc, and the stator basal disc is connected with casing；The main shaft bottom prestressing force magnetcisuspension
Rotor among the rotor portions magnet ring and repulsion type footpath axial magnetic suspension bearing of radial magnetic bearing among floating composite bearing
Portion's magnet ring is co-located on same rotor basal disc (209), and the rotor basal disc is connected with main shaft；The axle on the main shaft top
To attraction type radial magnetic bearing by two with concentric circles radially and the electromagnet that is listed on electric motor end cap (202) is primary unshakable in one's determination
Portion is made up of axial air-gap with the electro-magnet rotor portion armature (200) being fixed on main shaft, and the electromagnet is primary unshakable in one's determination
Portion is separately positioned on two concentric circles axial port annular grooves by two magnet coils and forms and make the electric current of two magnet coils
Direction is opposite each other；The rotor portions armature of the electromagnet is provided with two and electromagnet primary core part axial port annular groove
Symmetrical shallow trench axial port annular groove is simultaneously aligned by axial air-gap；In the main shaft upper motor end cap (202)
Centre on, cylindrical extension can also be set, and magnetic centering bearing or motor are set in cylindrical extension (204)
The axial location detector (203) of main shaft to realize the feedback control to main shaft axial location, the upper and lower side of the main shaft with
The mechanical protection bearing (212,213) of sliding pair cooperation is additionally provided between the end cap up and down of motor.
Brief description of the drawings：
Here is the explanation to figure position where the mark explanation and part of entire specification accompanying drawing：
Vertical shaft (1-15,106), prestressing force magnetic suspension composite bearing (16-37), repulsion type footpath axial magnetic suspension bearing (38-
59,211), axial attraction type radial magnetic bearing (60-80,198), rotor portions annular permanent magnet 81-83), rotor basal disc
(84-105,209), stator department annular permanent magnet (107,110,111), stator basal disc (112-131,208), annular permanent magnet
(not marking), cylindrical extension (140-149,130), center stem (136,137), sleeve (138,139), end cap (162-170,
119), magnetic centering bearing (in the example of Fig. 4,5,6,8,10,12,13,14,15), stator department cylinder (191-194,182,
186th, 189), a counterbore (183,187), hollow cylinder (189), the threaded connection place that cylinder is formed with cylindrical extension are removed
(184,185,190), the threaded connection place (195,196,210) that prestressing force bearing rotor basal disc is formed with vertical shaft are non-magnetic anti-
Dead isolation pad (Fig. 4,10 examples) is glued, composite magnetic suspension bearing (is not marked), annular electromagnet coil (108,188), compound
Stator basal disc (112,161,115,116,132,133,121,122,124,126,134,135,202).
Fig. 1,2,3,9,11 are the accompanying drawing example of single-degree-of-freedom magnetic suspension rotor support system respectively.
Fig. 4,5,10 are the accompanying drawing example of the single-degree-of-freedom magnetic suspension rotor support system with magnetic centering bearing respectively.
Fig. 6 is the accompanying drawing that flying wheel battery used and carried the single-degree-of-freedom magnetic suspension rotor support system of magnetic centering bearing
Example.
Fig. 7 is the accompanying drawing of electric, permanent magnetism mixed type footpath axial magnetic suspension bearing single-degree-of-freedom magnetic suspension rotor support system
Example.
Fig. 8 is the accompanying drawing example of the single-degree-of-freedom magnetic suspension rotor support system with electromagnetic type magnetic centering bearing.
Figure 12,13,14,15 are the accompanying drawing examples of four kinds of magnetic centering bearings.
Figure 16 is the accompanying drawing example of single side type prestressing force magnetic suspension bearing.
Figure 17 is the electro spindle single-degree-of-freedom magnetic suspension rotor support system using main passive hybrid magnetic suspension bearing
Accompanying drawing example.
Embodiment：
Below with specific embodiment to single-degree-of-freedom magnetic suspension rotor support system of the present invention and suitable for single freedom
The magnetic centering bearing that degree magnetic suspension rotor support system uses is described in further detail.
1st, a kind of single-degree-of-freedom magnetic suspension rotor support system, suitable for magnetic suspension platform, electro spindle, molecular pump, wind-force
The device that generator etc. has rotor vertical shaft uses；It is to set two prestressing force magnetic suspension composite bearings (16-37) respectively
On the position of the close end up and down of the vertical shaft, the prestressing force magnetic suspension composite bearing refers to：By a repulsion type journal axle
To magnetic suspension bearing and an axial attraction type radial magnetic bearing with the (institute of Fig. 1-9,11,16 of arranged radially inside and outside concentric circles
Show) or radial misalignments arrangement (as shown in Figure 10) the composite magnetic suspension bearing structure that is formed of mode；In same prestressing force
Among magnetic suspension composite bearing, rotor portions annular permanent magnet (81) and axial attraction type on the axial magnetic suspension bearing of repulsion type footpath
The rotor portions annular permanent magnet (82,83) of radial magnetic bearing is co-located on same rotor basal disc (84-105), institute
Rotor basal disc is stated to be connected with the vertical shaft；The stator department annular permanent magnet (107) or annulus of repulsion type footpath axial magnetic suspension bearing
The stator department annular permanent magnet of shape electromagnet coil (108,109) and the axial attraction type radial magnetic bearing (110,
111) it is arranged on same stator basal disc (112-131), can also be by the stator department ring of repulsion type footpath axial magnetic suspension bearing
Shape permanent magnet and annular electromagnet coil are arranged on the inwall (shown in Fig. 2,6,7) of vertical shaft periphery housing；In order to save material
Material, partial stator basal disc can also with vertical shaft peripheral fixture end cap (112,115,116,124,126,135,134,
122nd, 202,132,133,121) carry out it is compound, so as to turn into compound stator basal disc, the stator basal disc and compound stator basal disc
It is connected with the stator case of vertical shaft periphery；The rotor portion annular permanent magnet of the axial attraction type radial magnetic bearing
It is axially opposing by air gap and make the annular permanent magnet quantity corresponding to axial direction equal and attract each other and there is same size
Internal-and external diameter；The interior flux direction of rotor portion annular permanent magnet among the axial magnetic suspension bearing of the repulsion type footpath is mutual
The consistent and partially radially overlapping intersection that is formed by air gap between magnet and make air gap both sides magnet contour and there is identical
Volume；When the magnetic field sources that air gap side uses are annular electromagnet coil (5051), then the annular electromagnetism iron wire is required
Circle is contour with the rotor portions annular permanent magnet of air gap offside；It is described to repel each other among same prestressing force magnetic suspension composite bearing
Suffered by thrust suffered by the rotor portions of type footpath axial magnetic suspension bearing and the axial attraction type radial magnetic bearing rotor portions
Pulling force is opposite；For the axial attraction type radial direction magnetcisuspension among two prestressing force magnetic suspension composite bearings of the vertical shaft top and the bottom
For floating axle is held, both are consistent to pulling force caused by system rotor portion；What the prestressing force magnetic suspension composite bearing used
Annular permanent magnet uses axial charging；Stator basal disc and rotor basal disc among the prestressing force magnetic suspension composite bearing and
Each annular permanent magnet set on rotor basal disc keeps concentric with vertical shaft and vertical shaft is non-contactly passed through end cap and compound
Centre bore on stator basal disc；Among described single-degree-of-freedom magnetic suspension rotor support system, there is the magnetic force of identical function
(Fig. 1,7 shown in) is used interchangeably between bearing or superposition uses, repulsion type footpath axial magnetic suspension bearing and axial attraction type
The position of radial magnetic bearing can also exchange exchange (Fig. 4,9 shown in)；Described single-degree-of-freedom magnetic suspension rotor support system
Central magnetic centering bearing also can be considered axial attraction type radial magnetic bearing；And motor is also considered as the magnetic resistance of prior art
Type radial direction attraction type axial magnetic suspension bearing；Among described single-degree-of-freedom magnetic suspension rotor support system, at least one institute
The rotor magnetic pole pole-face for stating axial attraction type radial magnetic bearing is provided with non-magnetic anti-sticking dead spacer (Fig. 4,10 institutes
Show)；
Among the present invention, the quantity positioned at the annular permanent magnet of central air gap both sides can be one (Fig. 1), two
(Fig. 1-4,6-8,10,11) or three (Fig. 9), all it is closely to be sleeved on one between each magnet when using multiple magnet combinations
Rise and adjacent magnets is kept contour and keep smooth uniformity of the adjacent magnets interior flux among closed-loop path；Described turn
Subbase disk and stator basal disc are made using non-magnet material.
Among the present invention, at the vertical shaft periphery stator case top or the end of bottom or top and the bottom without output shaft one end
Lid (116,132,133,121,124,134,135) centre is also provided with the axially outwardly extending cylindrical extension
(140-149,130), the shaft end end face of the vertical shaft and be arranged on inside cylindrical extension stator department cylinder (191-194,
182nd, 186, inner face 189) is formed axially opposing and by being embedded in vertical shaft axle end center hole and by axial direction by air gap
The solid cylindrical permanent magnet (Fig. 4-6) or annular permanent magnet or tight by a solid permanent magnet and an annular permanent magnet to magnetize
The close composite permanent magnet (Figure 10,12) for being set in together composition and identical structure on air gap offside stator department its center position
It is opposite to each other and attracts each other with the permanent magnet of quantity, so as to constitutes single-degree-of-freedom magnetic suspension rotor support system extensive use
Permanent-magnet type magnetic centering bearing (Fig. 4,5,6,10,12,14,15), the stator among the permanent-magnet type magnetic centering bearing
Portion's cylinder can use axial air-gap adjustable type (Fig. 4,5,6,10,12,14), air gap fixed (Figure 15) can also be used to tie
Structure, but air gap stationary structure, it is only limited to use in the case where vertical shaft upper and lower ends are without output shaft；It is described it is compound forever
Among magnet, opposite and volume is equal each other for the interior flux of radially adjoining permanent magnet；The axial position of the stator department cylinder
Air gap is adjusted, and can pass through the external screw thread that stator department cylinder bottom is set and the screw-internal thread fit on cylindrical extension inwall
(Figure 10,12,14) are realized, can also be by the bulb connecting rod (153) on stator department cylinder and cylindrical extension end cap
The threaded engagement of the opinion in heart hole is realized, can also be prolonged by the foot piece (150-152) being fixed on stator department cylinder with tubular
Leading screw connected mode (Fig. 5,6) between long portion's end cap central bore is realized；This permanent-magnet type magnetic centering bearing is applied to various
Single-degree-of-freedom magnetic suspension rotor support system uses.
Among the present invention, the permanent-magnet type magnetic centering bearing can also be by electromagnetic attraction type magnetic centering bearing (figure
8th, 13), substituted, the electromagnetic attraction type magnetic centering bearing is that an annular electromagnet coil is sleeved on into tubular to extend
On the center stem (136,137) of portion's end cap, the center stem is corresponding with the upper end of vertical shaft by axial air-gap, described
The magnetic pole strength of center stem can be plane (Figure 13), taper (Fig. 8) or truncated cone shape pole-face, the end of the vertical shaft can be with
The magnetic pole strength of described center stem forms the form of (Figure 13) or tapered pole face-to-face and, to the form of plane, may be used also
By be tapered pole to tapered pole (Fig. 8) in the form of；The electromagnetic attraction type magnetic centering bearing is real by the size for adjusting electric current
Now the thickness of axial working gas gap is adjusted；This electromagnetic attraction type magnetic centering bearing is applied to various single-degree-of-freedom magnetic suspension
Rotor support system uses.
Among the present invention, the stator department cylinder among the permanent-magnet type magnetic centering bearing can also be hollow cylinder
Body (Figure 14), the hollow cylinder are fixed with by the solid cylindrical permanent magnet (154) of axial charging, the hollow cylinder
Bottom carries external screw thread, and the external screw thread realizes the fixed regulation with air gap with the screw-internal thread fit on cylindrical extension inwall.
Among the present invention, the stator department cylinder can also be by the solid cylindrical permanent magnet institute of an axial charging
Substitute, solid cylindrical permanent magnet is fixed by the end cap of the shoulder of cylindrical extension bottom and upper end, the solid cylinder
Air gap between shape permanent magnet and vertical shaft end is fixed (Figure 15).
Among the present invention, when the rotor basal disc of prestressing force magnetic suspension composite bearing is manufactured using non-magnet material,
The radially superposed intersection of interior outer magnetic ring can also be deviated from the rotor portion annular permanent magnet of repulsion type footpath axial magnetic suspension bearing
On end position, respectively set an inner flange type magnetic conduction yoke (157,158) and an outward flange formula magnetic conduction yoke (159,
160) and make two magnetic conduction yokes (157 and 159,160 and axially extending wall 158) along repulsion type footpath axial magnetic suspension bearing
Air gap between interior outer magnetic ring moves towards to be formed axially opposing (Fig. 9).
Among the present invention, mechanical guarantor can also be set between the end cap of the stator case of the vertical shaft and vertical shaft periphery
Bearing is protected, is coordinated between the mechanical protection bearing and vertical shaft using sliding pair.
Among the present invention, the phase made among the vertical shaft top prestressing force magnetic suspension composite bearing (35) can also be used
The stator department of the stator department annular permanent magnet of reprimand type footpath axial magnetic suspension bearing (56) and axial attraction type radial magnetic bearing
Permanent magnet is arranged on the top end cap (134) of the same electro spindle with cylindrical extension (145), the axial attraction type
Radial magnetic bearing passes through axial gas by the solid cylinder permanent magnet in the vertical shaft upper end center hole or composite permanent magnet
The corresponding solid cylinder permanent magnet in the cylindrical extension (145) end stator department cylinder (182) centre bore of gap
Or the permanent-magnet type magnetic centering bearing (Figure 10) that composite permanent magnet is formed is substituted；Repulsion type footpath axial magnetic suspension bearing
Rotor portions annular permanent magnet be arranged on the outside of vertical shaft (10), the permanent-magnet type magnetic centering bearing can also be by electromagnetic attraction type
Magnetic centering bearing (Fig. 8,13) is substituted；The repulsion type footpath axial magnetic suspension bearing (56) on the vertical shaft top can also be showed
The radial direction attraction type axial magnetic suspension bearing for having full permanent magnetism is substituted.
2nd, a kind of single-degree-of-freedom magnetic suspension rotor support system, by motor stator and rotor (207) shell (206) motor unshakable in one's determination
Main shaft (199) and the axial attraction type radial magnetic bearing being arranged on electric machine main shaft upper position and electric machine main shaft lower portion
The prestressing force magnetic suspension composite bearing put is formed（Figure 17）, the prestressing force magnetic suspension composite bearing passes through by upper and lower magnet ring
Axial air-gap attract each other composition radial magnetic bearing and the repulsion type footpath axial direction magnetic suspension shaft with concentric circles arranged radially
Hold (211) to be formed, the inside and outside magnet ring among the axial magnetic suspension bearing of the repulsion type footpath keeps axially wrong by radial air gap
Position, the inside and outside magnet ring is contour identical with interior flux direction, mutually exclusive so as to form；The main shaft bottom prestressing force magnetic
Suspension composite shaft take in radial magnetic bearing stator department magnet ring and repulsion type footpath axial magnetic suspension bearing among determine
Sub-portion magnet ring is arranged on same stator basal disc, and the stator basal disc is connected with casing；The main shaft bottom prestressing force magnetcisuspension
Rotor among the rotor portions magnet ring and repulsion type footpath axial magnetic suspension bearing of radial magnetic bearing among floating composite bearing
Portion's magnet ring is co-located on same rotor basal disc (209), and the rotor basal disc is connected with main shaft；The axle on the main shaft top
To attraction type radial magnetic bearing by two with concentric circles radially and the electromagnet that is listed on electric motor end cap (202) is primary unshakable in one's determination
Portion is made up of axial air-gap with the electro-magnet rotor portion armature (200) being fixed on main shaft, and the electromagnet is primary unshakable in one's determination
Portion is separately positioned on two concentric circles axial port annular grooves by two magnet coils and forms and make the electric current of two magnet coils
Direction is opposite each other；The rotor portions armature of the electromagnet is provided with two and electromagnet primary core part axial port annular groove
Symmetrical shallow trench axial port annular groove is simultaneously aligned by axial air-gap；In the main shaft upper motor end cap (202)
Centre on, cylindrical extension can also be set, and magnetic centering bearing or motor are set in cylindrical extension (204)
The axial location detector (203) of main shaft to realize the feedback control to main shaft axial location, the upper and lower side of the main shaft with
The mechanical protection bearing (212,213) of sliding pair cooperation is additionally provided between the end cap up and down of motor.
The embodiment that this document is enumerated, it is where showing the spirit of the present invention, not as the whole embodiments of the present invention
Restriction, those skilled in the art can also develop out more after this document is read with reference to common knowledge and conventional techniques
More embodiments, still, change ten thousand times without leaving the original aim or stand, in the flexible implementation behavior being obtained with without paying creative work,
All it has been that the present invention discloses covering and claimed scope.
Claims (10)
1. a kind of single-degree-of-freedom magnetic suspension rotor support system, used suitable for the device with rotor vertical shaft；It is by two
Prestressing force magnetic suspension composite bearing (16-37) is separately positioned on the position of close end up and down of the vertical shaft, the prestressing force
Magnetic suspension composite bearing refers to：By a repulsion type footpath axial magnetic suspension bearing and an axial attraction type radial magnetic bearing
The composite magnetic suspension bearing structure formed in a manner of arranged radially inside and outside concentric circles or radial misalignments arrange；Same pre-
Among stress magnetic suspension composite bearing, rotor portions annular permanent magnet (81) and axially suction on the axial magnetic suspension bearing of repulsion type footpath
The rotor portions annular permanent magnet (82,83) for drawing type radial magnetic bearing is co-located on same rotor basal disc (84-105)
On, the rotor basal disc is connected with the vertical shaft；The stator department annular permanent magnet (107) of repulsion type footpath axial magnetic suspension bearing or
The stator department annular permanent magnet of annular electromagnet coil (108,109) and the axial attraction type radial magnetic bearing
(110,111) are arranged on same stator basal disc (112-131), or the stator department ring by repulsion type footpath axial magnetic suspension bearing
Shape permanent magnet and annular electromagnet coil are arranged on the inwall of vertical shaft periphery housing；In order to save material, or part is fixed
On subbase disk and vertical shaft peripheral fixture end cap (112,115,116,124,126,135,134,122,202,132,133,
121) progress is compound, so as to turn into compound stator basal disc, the stator basal disc and compound stator basal disc and vertical shaft periphery
Stator case is connected；The rotor portion annular permanent magnet of the axial attraction type radial magnetic bearing is axially opposing by air gap
And make the annular permanent magnet quantity corresponding to axial direction it is equal and attract each other and with same size internal-and external diameter；It is described to repel each other
The interior flux direction of rotor portion annular permanent magnet among the axial magnetic suspension bearing of type footpath is consistent with each other and passes through air gap shape
Into the partially radially overlapping intersection between magnet and make air gap both sides magnet contour and there is identical volume；When air gap side makes
When magnetic field sources are annular electromagnet coil (50,51), then turn of the annular electromagnet coil and air gap offside is required
Sub-portion annular permanent magnet is contour；Among same prestressing force magnetic suspension composite bearing, repulsion type footpath axial direction magnetic suspension shaft
Thrust suffered by the rotor portions held and the pulling force suffered by the axial attraction type radial magnetic bearing rotor portions are opposite；For described
For axial attraction type radial magnetic bearing among two prestressing force magnetic suspension composite bearings of vertical shaft top and the bottom, both are right
Pulling force caused by system rotor portion is consistent；The annular permanent magnet that the prestressing force magnetic suspension composite bearing uses uses axle
To magnetizing；Set on stator basal disc and rotor basal disc and rotor basal disc among the prestressing force magnetic suspension composite bearing
Each annular permanent magnet keeps concentric with vertical shaft and makes vertical shaft non-contactly through the centre bore on end cap and compound stator basal disc；
Among described single-degree-of-freedom magnetic suspension rotor support system, it is used interchangeably between the magnetic bearing with identical function
Or superposition uses, the position of repulsion type footpath axial magnetic suspension bearing and axial attraction type radial magnetic bearing can also be exchanged mutually
Change；Magnetic centering bearing among the single-degree-of-freedom magnetic suspension rotor support system belongs to axial attraction type axial magnetic axle
The one kind held；And motor then has the function of radial direction attraction type axial magnetic suspension bearing；Described single-degree-of-freedom magnetic suspension rotor
Among support system, non-lead is provided with the rotor magnetic pole pole-face of at least one axial attraction type radial magnetic bearing
The anti-sticking dead spacer of magnetic.
2. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, also reside in：Positioned at central air gap both sides
The quantity of annular permanent magnet is one, two or three, is all closely to be set between each magnet when using multiple magnet combinations
Together and adjacent magnets is kept contour and keep smooth uniformity of the adjacent magnets interior flux among closed-loop path；Institute
Rotor basal disc and stator basal disc is stated to make using non-magnet material.
3. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, also reside in：In vertical shaft periphery stator
Housing upper or bottom or top and the bottom without output shaft one end end cap (116,132,133,121,124,134,135) central part
Position is provided with the axially outwardly extending cylindrical extension (140-149,130), and the shaft end end face of the vertical shaft is with being arranged on tubular
Inside extension stator department cylinder (191-194,182,186, inner face 189) forms axially opposing and leads to by air gap
Cross and be embedded in vertical shaft axle end center hole and by the solid cylindrical permanent magnet or annular permanent magnet of axial charging or by a reality
Heart permanent magnet and an annular permanent magnet are closely set in together the composite permanent magnet and air gap offside stator department cylinder of composition
The permanent magnet of identical structure and quantity is opposite to each other and attracted each other on centre, turns so as to constitute single-degree-of-freedom magnetic suspension
The sub- wide variety of permanent-magnet type magnetic centering bearing of support system, the stator department circle among the permanent-magnet type magnetic centering bearing
Cylinder uses axial air-gap adjustable type, or uses air gap stationary structure, but air gap stationary structure, is only limited to above and below vertical shaft
Both ends without output shaft in the case of use；Among described composite permanent magnet, the interior flux of radially adjoining permanent magnet is mutual
It is equal for opposite and volume；The axial position air gap regulation of the stator department cylinder, is set by stator department cylinder bottom
External screw thread is realized with the screw-internal thread fit on cylindrical extension inwall, or passes through the bulb connecting rod on stator department cylinder
(153) threaded engagement with the opinion of cylindrical extension end cap central bore is realized, or the tail by being fixed on stator department cylinder
Leading screw connected mode between bar (150-152) and cylindrical extension end cap central bore is realized；This permanent-magnet type magnetic centering axle
Hold and used suitable for various single-degree-of-freedom magnetic suspension rotor support systems.
4. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, also reside in：The magnetic centering bearing is
Electromagnetic attraction type magnetic centering bearing, it is the central core that an annular electromagnet coil is sleeved on to cylindrical extension end cap
On post (136,137), the center stem is corresponding with the upper end of vertical shaft by axial air-gap, the magnetic pole of the center stem
Face is plane, taper or truncated cone shape pole-face, and the end of the vertical shaft is formed face-to-face with the magnetic pole strength of described center stem
Form, or tapered pole is to the form of plane, or tapered pole is to the form of tapered pole；The electromagnetic attraction type magnetic centering
Size realization of the bearing by adjusting electric current is adjusted to the thickness of axial working gas gap；This electromagnetic attraction type magnetic centering bearing
Used suitable for various single-degree-of-freedom magnetic suspension rotor support systems.
5. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, also reside in：The permanent-magnet type magnetic centering
Stator department cylinder among bearing is hollow cylinder, and the hollow cylinder has by the solid cylindrical permanent magnetism of axial charging
Body (154), the hollow cylinder bottom carry external screw thread, the external screw thread and the screw-internal thread fit on cylindrical extension inwall
Realize the fixed regulation with air gap.
6. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, also reside in：The stator department cylinder quilt
The solid cylindrical permanent magnet of one axial charging is substituted, solid cylindrical permanent magnet by the shoulder of cylindrical extension bottom and
The end cap of upper end is fixed, and the air gap between the solid cylindrical permanent magnet and vertical shaft end is fixed.
7. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, also reside in：When prestressing force magnetic suspension is compound
When the rotor basal disc of bearing is manufactured using non-magnet material, in repulsion type footpath, the rotor portion annular of axial magnetic suspension bearing is forever
Magnet away from the radially superposed intersection of interior outer magnetic ring end position on, respectively set an inner flange type magnetic conduction yoke (157,
158) and the magnetic conduction yoke (159,160) of outward flange formula and make two magnetic conduction yokes (157,159,160, axial direction 158)
Air gap of the wall extension between outer magnetic ring in the axial magnetic suspension bearing of repulsion type footpath moves towards to be formed axially opposing.
8. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, also reside in：The vertical shaft and vertical shaft periphery
Stator case end cap between be provided with mechanical protection bearing, matched somebody with somebody between the mechanical protection bearing and vertical shaft using sliding pair
Close.
9. according to the single-degree-of-freedom magnetic suspension rotor support system described in claim 1, it is characterized in that：The vertical shaft top it is pre-
The stator department annular permanent magnet and axle of repulsion type footpath axial magnetic suspension bearing (56) among stress magnetic suspension composite bearing (35)
The same electro spindle with cylindrical extension (145) is arranged on to the stator department permanent magnet of attraction type radial magnetic bearing
On top end cap (134), the axial attraction type radial magnetic bearing is by the solid cylinder in the vertical shaft upper end center hole
Body permanent magnet or composite permanent magnet by corresponding to axial air-gap in the cylindrical extension (145) end stator department cylinder
(182) the permanent-magnet type magnetic centering bearing that the solid cylinder permanent magnet in centre bore or composite permanent magnet are formed is substituted；
The rotor portions annular permanent magnet of repulsion type footpath axial magnetic suspension bearing is arranged on the outside of vertical shaft (10), or by the permanent-magnet type
Magnetic centering bearing is substituted by electromagnetic attraction type magnetic centering bearing；Or the repulsion type footpath axial direction magnetcisuspension by the vertical shaft top
Floating axle holds (56) and substituted by the radial direction attraction type axial magnetic suspension bearing of existing full permanent magnetism.
A kind of 10. single-degree-of-freedom magnetic suspension rotor support system, by motor stator and rotor (207) unshakable in one's determination, shell (206), motor master
Axle (199) and the axial attraction type radial magnetic bearing and electric machine main shaft lower position being arranged on electric machine main shaft upper position
On prestressing force magnetic suspension composite bearing formed, the prestressing force magnetic suspension composite bearing passes through axial air-gap by upper and lower magnet ring
The radial magnetic bearing for the composition that attracts each other and repulsion type footpath axial magnetic suspension bearing (211) institute with concentric circles arranged radially
Form, the inside and outside magnet ring among the axial magnetic suspension bearing of the repulsion type footpath keeps axile displacement by radial air gap, described
Inside and outside magnet ring is contour identical with interior flux direction, mutually exclusive so as to form；The main shaft bottom prestressing force magnetic suspension is compound
Stator department magnet ring among the stator department magnet ring and repulsion type footpath axial magnetic suspension bearing of radial magnetic bearing among bearing
It is arranged on same stator basal disc, the stator basal disc is connected with casing；The main shaft bottom prestressing force magnetic suspension composite shaft
Rotor portions magnet ring among the rotor portions magnet ring and repulsion type footpath axial magnetic suspension bearing of the radial magnetic bearing taken is total to
With being arranged on same rotor basal disc (209), the rotor basal disc is connected with main shaft；The axial attraction type on the main shaft top
Radial magnetic bearing by two with concentric circles radially and the electromagnet primary core part that is listed on electric motor end cap (202) passes through axle
Formed to air gap with the electro-magnet rotor portion armature (200) being fixed on main shaft, the electromagnet primary core part is by two
Magnet coil is separately positioned on two concentric circles axial port annular grooves and forms and make the sense of current of two magnet coils each other
Conversely；The rotor portions armature of the electromagnet is symmetrically shallow with electromagnet primary core part axial port annular groove provided with two
Groove profile axial port annular groove is simultaneously aligned by axial air-gap；In the central part of the main shaft upper motor end cap (202)
On position, cylindrical extension is provided with, and the axial position of magnetic centering bearing or electric machine main shaft is set in cylindrical extension (204)
Detector (203) is put to realize the feedback control to main shaft axial location, the upper and lower side of the main shaft and the upper and lower side of motor
The mechanical protection bearing (212,213) of sliding pair cooperation is additionally provided between lid.
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| CN201410342683.9A CN105257698B (en) | 2014-07-14 | 2014-07-14 | A kind of single-degree-of-freedom magnetic suspension rotor support system and magnetic centering bearing |
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| CN201410342683.9A CN105257698B (en) | 2014-07-14 | 2014-07-14 | A kind of single-degree-of-freedom magnetic suspension rotor support system and magnetic centering bearing |
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| CN105257698B true CN105257698B (en) | 2018-01-19 |
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| CN108614211B (en) * | 2018-03-30 | 2020-10-23 | 北京航天万鸿高科技有限公司 | General type testing arrangement for preventing sub-package permanent magnet torque motor stator and rotor collision |
| CN109058296B (en) * | 2018-10-09 | 2024-03-05 | 珠海格力电器股份有限公司 | Stator assembly and repulsive force combined magnetic suspension axial bearing structure |
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| CN109826868A (en) * | 2019-02-20 | 2019-05-31 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | A kind of hybrid magnetic levitation bearing arrangement |
| CN109826867A (en) * | 2019-02-20 | 2019-05-31 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | A kind of hybrid magnetic suspension bearing system and generator |
| CN110912462A (en) * | 2019-11-12 | 2020-03-24 | 深圳市东维丰电子科技股份有限公司 | Motor with magnetic suspension inner rotor |
| CN112564380B (en) * | 2020-11-27 | 2022-03-04 | 珠海格力电器股份有限公司 | Bearing protection device, magnetic suspension bearing and system thereof |
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Effective date of registration: 20191125 Address after: 239000 comprehensive economic development zone of Quanjiao County, Anhui, Chuzhou Patentee after: Chuzhou City Zhongnuo Equipment Mould Manufacturing Co., Ltd. Address before: 050305, Shijiazhuang City, Hebei province Jingxing Granville County town of Peiping Village Patentee before: Zhang Yubao |