CN107994719A - A kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc - Google Patents
A kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc Download PDFInfo
- Publication number
- CN107994719A CN107994719A CN201711452994.0A CN201711452994A CN107994719A CN 107994719 A CN107994719 A CN 107994719A CN 201711452994 A CN201711452994 A CN 201711452994A CN 107994719 A CN107994719 A CN 107994719A
- Authority
- CN
- China
- Prior art keywords
- bearing
- rotor
- magnetic
- collision sleeve
- lifting force
- Prior art date
- 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.)
- Granted
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 11
- 210000004907 gland Anatomy 0.000 claims abstract description 28
- 230000002528 anti-freeze Effects 0.000 claims abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc, rotor is equipped with stage portion, and anti-collision sleeve is sheathed on rotor, and is interference fitted between anti-collision sleeve and rotor, and bearing gland contacts at anti-collision sleeve in stage portion；Lifting force magnetic bearing and lower thrust magnetic bearing are fixed in engine base by screw, antifreeze plate is arranged between lifting force magnetic bearing and lower thrust magnetic bearing, bearing is arranged in bearing block, and bearing holder (housing, cover) is arranged on anti-collision sleeve, formed with upper thrust gap between the magnetic face of lifting force magnetic bearing and the end face of the stage portion, lower thrust gap is formed between the magnetic face of lower thrust magnetic bearing and bearing gland.Present invention eliminates thrust disc, the overall length of axis, the stability of increased axis are shortened；Anti-collision sleeve in the present invention can effectively protect rotor, because of rotor unstability and bearing knock, if producing damage, only need to change bearing and anti-collision sleeve, maintenance duration and cost can be greatly lowered.
Description
Technical field：
The present invention relates to a kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc.
Background technology：
Thrust disc in existing magnetic suspension motor is arranged between two thrust magnetic bearings, the length of the required rotor of this kind of structure
Degree is longer, and rotor length increase can influence the stability of rotor rotation.In addition, because being limited by rotor material, the hardness of rotor,
Wear-resisting property is not ideal enough, and in the case where lacking anti-collision sleeve, once hitting after rotor unstability, unrepairable easily occurs
The damage of property.
The content of the invention：
The present invention is to provide a kind of magnetic suspension motor rotor propulsion disc to solve the above-mentioned problems of the prior art
Anticollision abrasion-proof structure.
The technical solution adopted in the present invention has：A kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc, including
Rotor, engine base, bearing gland, protection end cap, shaft end locking nut and bearing, the protection end cap are fixedly connected with engine base, turn
Son is by bearing rotating support in engine base, and bearing gland is sheathed on rotor, and one end of bearing gland contacts at bearing
On inner ring, and bearing is axially positioned on rotor, shaft end locking nut is threaded in the end of rotor, and shaft end locking screw
Mother bearing gland is axially positioned on rotor, further include lower thrust magnetic bearing, bearing block, antifreeze plate, lifting force magnetic bearing and
Anti-collision sleeve, the rotor are equipped with stage portion, and anti-collision sleeve is sheathed on rotor, and is interference fitted between anti-collision sleeve and rotor, axis
Pressure cap contacts at anti-collision sleeve in stage portion；Lifting force magnetic bearing and lower thrust magnetic bearing are fixed in engine base by screw,
Antifreeze plate is arranged between lifting force magnetic bearing and lower thrust magnetic bearing, and bearing block is arranged in lifting force magnetic bearing and lower thrust magnetic axis
In holding, bearing is arranged in bearing block, and bearing holder (housing, cover) is arranged on anti-collision sleeve, magnetic face and the stage portion of lifting force magnetic bearing
Formed with upper thrust gap between end face, lower thrust gap is formed between the magnetic face of lower thrust magnetic bearing and bearing gland；
The upper port of the anti-collision sleeve stretches out and forms the first limiting stand of platform-like, is set in the stage portion of rotor
There is limiting slot, the first limiting stand is placed in limiting slot, and the lower face of the first limiting stand and the lower face of stage portion are flush.
Further, the anti-collision sleeve is equipped with limited step, and bearing is axially positioned on limited step by bearing gland.
Further, the bearing gland includes a body, and the axis direction of the body is equipped with positioning table, positioning table
Axis direction is equipped with stepped hole, and the bottom surface of stepped hole is contacted on anti-collision sleeve.
The present invention has the advantages that：
It is 1) present invention eliminates thrust disc, lifting force magnetic bearing and lower thrust magnetic bearing thrust magnetic bearing is oppositely arranged,
During turn-on current, the strong interaction in the A faces of lifting force magnetic bearing stage portion, the B faces of lower thrust magnetic bearing and bearing gland
Strong interaction, shortens the overall length of axis, the stability of increased axis；
2) anti-collision sleeve in the present invention can effectively protect rotor, because of rotor unstability and bearing knock, if producing damage
It is bad, then bearing and anti-collision sleeve are only needed to change, maintenance duration and cost can be greatly lowered.
Brief description of the drawings：
Fig. 1 is structure chart of the present invention.
Fig. 2 is partial enlarged view of the present invention.
Fig. 3 is the structure chart of axis pressure cap of the present invention.
Fig. 4 is the installation diagram between anti-collision sleeve and rotor in the present invention.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 4, the present invention discloses a kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc, including rotor
1st, engine base 2, bearing gland 6, protection end cap 7, shaft end locking nut 8, bearing 11, lower thrust magnetic bearing 5, bearing block 12, every magnetic
Piece 13, lifting force magnetic bearing 14 and anti-collision sleeve 16, protection end cap 7 are fixedly connected with engine base 2, and rotor 1 rotates branch by bearing 11
Hold in engine base 2, bearing gland 6 is sheathed on rotor 1, and one end of bearing gland 6 is contacted on the inner ring of bearing 11, and will
Bearing 11 is axially positioned on rotor 1.Shaft end locking nut 8 is threaded in the end of rotor 1, and shaft end locking nut 8 will
Bearing gland 6 is axially positioned on rotor 1, and bearing gland 6 and shaft end locking nut 8 are placed in protection end cap 7.
Stage portion 100 is equipped with rotor 1, anti-collision sleeve 16 is sheathed on rotor 1, and bearing gland 6 contradicts anti-collision sleeve 16
In in stage portion 100, it is interference fitted between anti-collision sleeve 16 and rotor 1.Screw sequentially passes through lower thrust magnetic bearing 5, antifreeze plate 13
With lifting force magnetic bearing 14 and be threaded on engine base 2, antifreeze plate 13 is arranged on lifting force magnetic bearing 14 and lower thrust magnetic bearing 5
Between.Bearing block 12 is arranged in lifting force magnetic bearing 14 and lower thrust magnetic bearing 5, lifting force magnetic bearing 14 and lower thrust magnetic axis
Hold in 5 and the pressing of bearing block 12 is fixed in lifting force magnetic bearing 14 and lower thrust magnetic bearing 5.Bearing 11 is arranged on bearing block 12
It is interior, and bearing 11 is sheathed on anti-collision sleeve 16.Shape between the magnetic face of lifting force magnetic bearing 14 and the end face of the stage portion 100
Into there is upper thrust gap 400, lower thrust gap 500 is formed between the magnetic face of lower thrust magnetic bearing 5 and bearing gland 6.Pass through
The antifreeze plate 13 of different-thickness is replaced, the size in thrust gap 400 and lower thrust gap 500 can be adjusted.
The upper port of anti-collision sleeve 16 in the present invention stretches out and forms the first limiting stand 161 of platform-like, in rotor 1
Stage portion 100 be equipped with limiting slot, the first limiting stand 161 is placed in limiting slot, and the lower face of the first limiting stand 161 and platform
The lower face in rank portion 100 is flush.
For ease of bearing 11 is axially positioned on anti-collision sleeve 16, limited step 162, bearing pressure are equipped with anti-collision sleeve 16
Bearing 11 is axially positioned on limited step 162 by lid 6.
Bearing gland 6 includes a body 61, and the axis direction of the body 61 is equipped with positioning table 62, the axle center of positioning table 62
Direction is equipped with stepped hole 63, and the bottom surface of stepped hole 63 is contacted on anti-collision sleeve 16.
Present invention eliminates thrust disc, and lifting force magnetic bearing 14 and 5 thrust magnetic bearing of lower thrust magnetic bearing are inverted (two
The magnetic face opposite direction arrangement of thrust magnetic bearing), during turn-on current, lifting force magnetic bearing 14 and the A faces of stage portion 100 are strong
Interaction, the strong interaction in the B faces of lower thrust magnetic bearing 5 and bearing gland 6.By the structure disperses of thrust disc to platform
In rank portion 100 and bearing gland 6, the overall length of axis, the stability of increased axis are shortened.
Anti-collision sleeve 16 in the present invention can effectively protect rotor 1, be hit because of 1 unstability of rotor with bearing 11, if production
Raw damage, then only need to change bearing 11 and anti-collision sleeve 16, and maintenance duration and cost can be greatly lowered.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made without departing from the principle of the present invention, these improvement also should be regarded as the present invention's
Protection domain.
Claims (3)
1. a kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc, including rotor (1), engine base (2), bearing gland (6),
End cap (7), shaft end locking nut (8) and bearing (11) are protected, the protection end cap (7) is fixedly connected with engine base (2), rotor
(1) by bearing (11) rotating support in engine base (2), bearing gland (6) is sheathed on rotor (1), and bearing gland (6)
One end is contacted on the inner ring of bearing (11), and bearing (11) is axially positioned on rotor (1), shaft end locking nut (8) spiral shell
Line is connected to the end of rotor (1), and bearing gland (6) is axially positioned on rotor (1) by shaft end locking nut (8), it is special
Sign is：Further include lower thrust magnetic bearing (5), bearing block (12), antifreeze plate (13), lifting force magnetic bearing (14) and anti-collision sleeve
(16), the rotor (1) is equipped with stage portion (100), and anti-collision sleeve (16) is sheathed on rotor (1), and anti-collision sleeve (16) is with turning
It is interference fitted between sub (1), bearing gland (6) contacts at anti-collision sleeve (16) in stage portion (100)；Lifting force magnetic bearing (14)
Be fixed on lower thrust magnetic bearing (5) by screw in engine base (2), antifreeze plate (13) be arranged on lifting force magnetic bearing (14) and under push away
Between power magnetic bearing (5), bearing block (12) is arranged in lifting force magnetic bearing (14) and lower thrust magnetic bearing (5), bearing (11)
In the bearing block (12), and bearing (11) is sheathed on anti-collision sleeve (16), the magnetic face of lifting force magnetic bearing (14) with it is described
Formed with upper thrust gap (400), the magnetic face of lower thrust magnetic bearing (5) and bearing gland between the end face of stage portion (100)
(6) formed between lower thrust gap (500)；
The upper port of the anti-collision sleeve (16) stretches out and forms the first limiting stand (161) of platform-like, the platform in rotor (1)
Rank portion (100) is equipped with limiting slot, and the first limiting stand (161) is placed in limiting slot, and the lower face of the first limiting stand (161) with
The lower face of stage portion (100) is flush.
2. the anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc as claimed in claim 1, it is characterised in that：The anticollision
Set (16) is equipped with limited step (162), and bearing (11) is axially positioned on limited step (162) by bearing gland (6).
3. the anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc as claimed in claim 1, it is characterised in that：The bearing
Gland (6) includes a body (61), and the axis direction of the body (61) is equipped with positioning table (62), the axle center side of positioning table (62)
Stepped hole (63) is equipped with upwards, the bottom surface of stepped hole (63) is contacted on anti-collision sleeve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452994.0A CN107994719B (en) | 2017-12-28 | 2017-12-28 | Anticollision wear-resisting structure of magnetic suspension motor rotor thrust disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452994.0A CN107994719B (en) | 2017-12-28 | 2017-12-28 | Anticollision wear-resisting structure of magnetic suspension motor rotor thrust disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107994719A true CN107994719A (en) | 2018-05-04 |
| CN107994719B CN107994719B (en) | 2024-03-19 |
Family
ID=62041512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711452994.0A Active CN107994719B (en) | 2017-12-28 | 2017-12-28 | Anticollision wear-resisting structure of magnetic suspension motor rotor thrust disk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107994719B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110894855A (en) * | 2019-12-26 | 2020-03-20 | 南京磁谷科技有限公司 | Novel magnetic suspension bearing assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1037889A (en) * | 1996-07-22 | 1998-02-13 | Mitsubishi Heavy Ind Ltd | Turbo-molecular pump |
| JP2008182823A (en) * | 2007-01-25 | 2008-08-07 | Edwards Kk | Electromagnetic actuator and vacuum pump |
| CN103233984A (en) * | 2013-04-07 | 2013-08-07 | 哈尔滨工程大学 | Auxiliary support for vertical magnetic suspension flywheel rotor |
| CN106438696A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic bearing structure |
| CN207719935U (en) * | 2017-12-28 | 2018-08-10 | 南京磁谷科技有限公司 | A kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc |
-
2017
- 2017-12-28 CN CN201711452994.0A patent/CN107994719B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1037889A (en) * | 1996-07-22 | 1998-02-13 | Mitsubishi Heavy Ind Ltd | Turbo-molecular pump |
| JP2008182823A (en) * | 2007-01-25 | 2008-08-07 | Edwards Kk | Electromagnetic actuator and vacuum pump |
| CN103233984A (en) * | 2013-04-07 | 2013-08-07 | 哈尔滨工程大学 | Auxiliary support for vertical magnetic suspension flywheel rotor |
| CN106438696A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic bearing structure |
| CN207719935U (en) * | 2017-12-28 | 2018-08-10 | 南京磁谷科技有限公司 | A kind of anticollision abrasion-proof structure of magnetic suspension motor rotor propulsion disc |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110894855A (en) * | 2019-12-26 | 2020-03-20 | 南京磁谷科技有限公司 | Novel magnetic suspension bearing assembly |
| CN110894855B (en) * | 2019-12-26 | 2024-05-28 | 南京磁谷科技股份有限公司 | Magnetic suspension bearing assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107994719B (en) | 2024-03-19 |
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| CP03 | Change of name, title or address |
Address after: 211102 No. 100 Jiuzhu Road, Jiangning Development Zone, Nanjing, Jiangsu Province Patentee after: Nanjing Cigu Technology Co.,Ltd. Country or region after: Zhong Guo Address before: 211102 No. 100 Jiuzhu Road, Jiangning Development Zone, Nanjing, Jiangsu Province Patentee before: NANJING CIGU Ltd.,Corp. Country or region before: Zhong Guo |
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| CP03 | Change of name, title or address |