CN107959378A - Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor - Google Patents
Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor Download PDFInfo
- Publication number
- CN107959378A CN107959378A CN201711453056.2A CN201711453056A CN107959378A CN 107959378 A CN107959378 A CN 107959378A CN 201711453056 A CN201711453056 A CN 201711453056A CN 107959378 A CN107959378 A CN 107959378A
- Authority
- CN
- China
- Prior art keywords
- bearing
- magnetic
- magnetic bearing
- lifting force
- lower thrust
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/03—Machines characterised by thrust bearings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor, rotor is equipped with 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 block is arranged in lifting force magnetic bearing and lower thrust magnetic bearing, and bearing is arranged in bearing block；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, 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 strong interaction in the B faces of lower thrust magnetic bearing and bearing gland, shorten the overall length of axis, the stability of increased axis.
Description
Technical field：
The present invention relates to separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor.
Background technology：
Thrust disc in existing centrifugal fan 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, and the structure is unfavorable for the installation of rotor, therefore, truly has
Necessity is improved the prior art to solve the deficiency of the prior art.
The content of the invention：
The present invention is provided and separated in a kind of magnetic suspension motor rotor to solve the above-mentioned problems of the prior art
Formula thrust magnetic axis bearing structure.
The technical solution adopted in the present invention has：Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor, bag
Rotor, engine base, bearing gland, protection end cap, shaft end locking nut and bearing are included, the protection end cap is fixedly connected with engine base,
By bearing rotating support in engine base, bearing gland is sheathed on rotor rotor, and one end of bearing gland contacts at bearing
Inner ring on, and bearing is axially positioned on rotor, shaft end locking nut is threaded in the end of rotor, and shaft end is locked
Bearing gland is axially positioned on rotor by nut, further includes lower thrust magnetic bearing, bearing block, antifreeze plate and lifting force magnetic axis
Hold, the rotor is equipped with stage portion, and lifting force magnetic bearing and lower thrust magnetic bearing are fixed in engine base by screw, antifreeze plate
Between lifting force magnetic bearing and lower thrust magnetic bearing, bearing block is arranged in lifting force magnetic bearing and lower thrust magnetic bearing,
Bearing is arranged in bearing block；
Formed with upper thrust gap, lower thrust magnetic axis 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 held and 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.
The present invention has the advantages that：Present invention eliminates thrust disc, by lifting force magnetic bearing and lower thrust magnetic axis
It is oppositely arranged to hold thrust magnetic bearing, during turn-on current, the strong interaction in the A faces of lifting force magnetic bearing stage portion, lower thrust
The strong interaction in the B faces of magnetic bearing and bearing gland, shortens the overall length of axis, the stability of increased axis.
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.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
Such as Fig. 1 to Fig. 3, the present invention discloses separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor, including turns
Son 1, 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 sheet 13 and lifting force magnetic bearing 14, protection end cap 7 are fixedly connected with engine base 2, and rotor 1 is by 11 rotating support of bearing in engine base
In 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 by 11 axis of bearing
To being positioned on rotor 1.Shaft end locking nut 8 is threaded in the end of rotor 1, and shaft end locking nut 8 is by bearing gland 6
It is axially positioned on rotor 1, bearing gland 6 and shaft end locking nut 8 are placed in protection end cap 7.
Stage portion 100 is equipped with rotor 1, screw sequentially passes through lower thrust magnetic bearing 5, antifreeze plate 13 and lifting force magnetic axis
Hold 14 and be threaded on engine base 2, antifreeze plate 13 is arranged between lifting force magnetic bearing 14 and lower thrust magnetic bearing 5.Bearing block
12 are arranged in lifting force magnetic bearing 14 and lower thrust magnetic bearing 5, by bearing in lifting force magnetic bearing 14 and lower thrust magnetic bearing 5
The pressing of seat 12 is fixed in lifting force magnetic bearing 14 and lower thrust magnetic bearing 5.Bearing 11 is arranged in bearing block 12, outside bearing 11
It is interference fitted between circle and bearing block 12.Formed between the magnetic face of lifting force magnetic bearing 14 and the end face of the stage portion 100
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.By more
The antifreeze plate 13 of different-thickness is changed, the size in thrust gap 400 and lower thrust gap 500 can be adjusted.
Bearing gland 6 in the present invention includes a body 61, and the axis direction of the body 61 is equipped with positioning table 62, positioning
The axis direction of platform 62 is equipped with stepped hole 63.Positioning table 62 is contacted on the inner ring of bearing 11, body 61 and lower thrust magnetic axis
Thrust gap 500 is descended in formation between holding 5 magnetic face.
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.
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 (2)
1. separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor, 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), turns
Sub (1) by bearing (11) rotating support in engine base (2), bearing gland (6) is sheathed on rotor (1), and bearing gland (6)
One end contact on the inner ring of bearing (11), and bearing (11) is axially positioned on rotor (1), shaft end locking nut (8)
The end of rotor (1) is threaded in, and bearing gland (6) is axially positioned on rotor (1) by shaft end locking nut (8), its
It is characterized in that：Further include lower thrust magnetic bearing (5), bearing block (12), antifreeze plate (13) and lifting force magnetic bearing (14), described turn
Sub (1) is equipped with stage portion (100), and lifting force magnetic bearing (14) and lower thrust magnetic bearing (5) are fixed on engine base (2) by screw
Interior, antifreeze plate (13) is arranged between lifting force magnetic bearing (14) and lower thrust magnetic bearing (5), and bearing block (12) is arranged in lifting force
In magnetic bearing (14) and lower thrust magnetic bearing (5), bearing (11) is arranged in bearing block (12)；
Formed with upper thrust gap (400) between the magnetic face of lifting force magnetic bearing (14) and the end face of the stage portion (100),
Formed between the magnetic face of lower thrust magnetic bearing (5) and bearing gland (6) lower thrust gap (500).
2. separate type thrust magnetic axis bearing structure in magnetic suspension motor rotor as claimed in claim 1, it is characterised in that：The axis
Pressure cap (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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453056.2A CN107959378A (en) | 2017-12-28 | 2017-12-28 | Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453056.2A CN107959378A (en) | 2017-12-28 | 2017-12-28 | Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107959378A true CN107959378A (en) | 2018-04-24 |
Family
ID=61957232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711453056.2A Pending CN107959378A (en) | 2017-12-28 | 2017-12-28 | Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107959378A (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 |
| CN106438696A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic bearing structure |
| CN107222132A (en) * | 2017-06-30 | 2017-09-29 | 北京航空航天大学 | One kind is without thrust disc magnetic suspension motor |
| CN107387560A (en) * | 2017-08-29 | 2017-11-24 | 南京磁谷科技有限公司 | A kind of not uniform thickness thrust magnetic axis bearing structure |
| CN207719961U (en) * | 2017-12-28 | 2018-08-10 | 南京磁谷科技有限公司 | Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor |
-
2017
- 2017-12-28 CN CN201711453056.2A patent/CN107959378A/en active Pending
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 |
| CN106438696A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic bearing structure |
| CN107222132A (en) * | 2017-06-30 | 2017-09-29 | 北京航空航天大学 | One kind is without thrust disc magnetic suspension motor |
| CN107387560A (en) * | 2017-08-29 | 2017-11-24 | 南京磁谷科技有限公司 | A kind of not uniform thickness thrust magnetic axis bearing structure |
| CN207719961U (en) * | 2017-12-28 | 2018-08-10 | 南京磁谷科技有限公司 | Separate type thrust magnetic axis bearing structure in a kind of magnetic suspension motor rotor |
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 |
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