CN209262071U - A kind of axial magnetic suspension bearing structure - Google Patents
A kind of axial magnetic suspension bearing structure Download PDFInfo
- Publication number
- CN209262071U CN209262071U CN201821806998.4U CN201821806998U CN209262071U CN 209262071 U CN209262071 U CN 209262071U CN 201821806998 U CN201821806998 U CN 201821806998U CN 209262071 U CN209262071 U CN 209262071U
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- China
- Prior art keywords
- magnetic suspension
- axial magnetic
- suspension bearing
- thrust disc
- bearing
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- 239000000725 suspension Substances 0.000 title claims abstract description 67
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000013011 mating Effects 0.000 claims 1
- 230000008093 supporting effect Effects 0.000 abstract description 12
- 230000002238 attenuated effect Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
It include bearing block, two axial magnetic suspension bearings, thrust disc and rotor the utility model discloses a kind of axial magnetic suspension bearing structure；Two axial magnetic suspension bearings are each attached on bearing block, between form the installation gap of thrust disc；Thrust disc is fixed on the rotor, and the circumferential wall of thrust disc extends in the installation gap of thrust disc；Two axial magnetic suspension bearings, which correspond on the inner edge of the end face of thrust disc circumferential wall, is all uniformly provided with several helicla flutes, and the width of helicla flute is attenuated by width from outside to inside, and on same end face helicla flute rotation direction it is identical.The utility model can be generated when operating normally axial supporting force and with the common supporting rotor of axial magnetic suspension bearing, axial magnetic suspension bearing failure cause rotor along axial direction fall moment can effectively mitigate rotor along it is axial directly hit caused by destruction.
Description
Technical field
The utility model relates to high-speed rotating machine field more particularly to a kind of axial magnetic suspension bearing structures.
Background technique
Magnetic suspension bearing is a kind of novel bearing that rotor is contiguously suspended without machinery using electromagnetic force.With tradition
Bearing (rolling bearing with cunning dynamic bearing) is compared, and magnetic suspension bearing and rotor are without Mechanical Contact, long service life, maintenance cost
It is low, it without lubrication and sealing, can be used for for a long time in the particular surroundings such as high/low temperature, it is considered to be the revolution of supporting technology is
The practical active supporting arrangement of currently the only investment.But magnetic suspension bearing distinct disadvantage is smaller than bearing capacity.It changes
Yan Zhi, under same bearing capacity, the volume and weight of magnetic suspension bearing is larger, and rotor weight and size increase, system is caused to move
State property can decline.
When magnetic suspension bearing failure when, rotor fall magnetic suspension bearing and rotor can be caused it is badly damaged.Therefore, in magnetic
In suspension bearing rotor system, rolling bearing usually should be also set as protection bearing (note: the gas between rolling bearing and rotor
Gap is less than the air gap between magnetic suspension bearing and rotor), to undertake defencive function, avoid the collision of rotor and magnetic suspension bearing.
But when system operates normally, this protection bearing cuts little ice.
Gas bearing is using air film support loading or to reduce the mechanical component to rub.With traditional bearing (rolling bearing and
Cunning dynamic bearing) it compares, gas bearing has that speed is high, precision is high, frictional dissipation is small, high-low temperature resistant and atomic radiation, nothing
Pollution, the features such as service life is long.Gas bearing is divided into hydrodynamic gas-lubricated bearing and hydrostatic gas-lubricated bearing.Hydrodynamic gas-lubricated bearing does not need outer
Aerating source, only fluid dynamic effect under generate supporting effect, have the advantages that structure is simple, but to manufacture processing request compared with
Height, and the stage is being started and stopped, exist with rotor and directly contacts friction.
Helicla flute hydrodynamic gas-lubricated bearing is to be acted on by spiral pump using helical groove structure, generate the axis of supporting effect
It holds.Helicla flute hydrodynamic gas-lubricated bearing with its bearing capacity big (especially at high speeds), it is low in energy consumption, high stability is good the features such as, far
It is superior to other kinds of hydrodynamic gas-lubricated bearing, practical middle column occupy the umber one.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of axis for defect involved in background technique
To magnetic bearing structure.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of axial magnetic suspension bearing structure, comprising bearing block, left axial magnetic suspension bearing, right axial magnetic suspension bearing,
Thrust disc and rotor；
The left axial magnetic suspension bearing, right axial magnetic suspension bearing are each attached on bearing block, and left axial magnetic suspension
The installation gap of thrust disc is formed between bearing, right axial magnetic suspension bearing；
The thrust disc is fixed on the rotor, and the circumferential wall of thrust disc extends in the installation gap of thrust disc；
On the inner edge for the end face that the left axial magnetic suspension bearing, right axial magnetic suspension bearing correspond to thrust disc circumferential wall
All be uniformly provided with several helicla flutes, the width of helicla flute is attenuated by width from outside to inside, and on same end face helicla flute rotation direction phase
Together；
Between the left axial magnetic suspension bearing and thrust disc, between right axial magnetic suspension bearing and thrust disc in rotor height
Axial hydrodynamic air film is capable of forming when speed rotation.
As the further prioritization scheme of the utility model axial magnetic suspension bearing structure, the thrust disc passes through with rotor
Interference fit connection.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
First, system operate normally when, between left axial magnetic suspension bearing and thrust disc, right axial magnetic suspension bearing and
Axial hydrodynamic air film between thrust disc can generate axial supporting force and with left axial magnetic suspension bearing, right axial magnetic suspension
The common supporting rotor of bearing.
Second, cause rotor to fall moment, above-mentioned axial hydrodynamic air-film thickness along axial direction in axial magnetic suspension bearing failure
Fall direction along axial direction and is compressed into minimum and generation much larger than the supporting force (falling opposite direction along axial direction) when operating normally, energy
Enough effectively mitigate caused by rotor edge is axially directly hit is destroyed.
Third, the utility model have axial defencive function, can replace set in conventional rotor system of magnetic suspension bearing
Axial protection bearing (rolling bearing) set.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of left axial magnetic suspension bearing in the utility model.
In figure, 1- rotor, 2- thrust disc, the left axial magnetic suspension bearing of 3-, 4- bearing block, the right axial magnetic bearing seat of 5-.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, it is thorough and complete to these embodiments are provided so that the disclosure, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1 and Figure 2, the utility model discloses a kind of axial magnetic suspension bearing structures, include bearing block, left axle
To magnetic suspension bearing, right axial magnetic suspension bearing, thrust disc and rotor；
The left axial magnetic suspension bearing, right axial magnetic suspension bearing are each attached on bearing block, and left axial magnetic suspension
The installation gap of thrust disc is formed between bearing, right axial magnetic suspension bearing；
The thrust disc is fixed on the rotor by interference fit, and the circumferential wall of thrust disc extends to thrust disc
It installs in gap；
On the inner edge for the end face that the left axial magnetic suspension bearing, right axial magnetic suspension bearing correspond to thrust disc circumferential wall
All be uniformly provided with several helicla flutes, the width of helicla flute is attenuated by width from outside to inside, and on same end face helicla flute rotation direction phase
Together；
Between the left axial magnetic suspension bearing and thrust disc, between right axial magnetic suspension bearing and thrust disc in rotor height
Axial hydrodynamic air film is capable of forming when speed rotation.
Since twentieth century, the ratio of combined technological achievement is significantly risen, and new technology is often already present several sections
The combination for learning principle is a kind of trend of up-to-date technology development.
The utility model is formed using the not wide helicla flute on left axial magnetic suspension bearing, right axial magnetic suspension bearing surface
Axial hydrodynamic air film.Operate normally when, the axial hydrodynamic air film can generate axial supporting force and with left axial magnetic suspension
Bearing, the common supporting rotor of right axial magnetic suspension bearing.Rotor is caused to fall moment along axial direction in axial magnetic suspension bearing failure,
The axial hydrodynamic air-film thickness falls direction along axial direction and is compressed into minimum and generation much larger than supporting force (edge when operating normally
Axially fall opposite direction), it can effectively mitigate destruction caused by the axial directly shock in rotor edge.Therefore the utility model also has axis
To defencive function, axial protection bearing (rolling bearing) set in conventional rotor system of magnetic suspension bearing may replace.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of axial magnetic suspension bearing structure, which is characterized in that include bearing block, left axial magnetic suspension bearing, right axial magnetic
Suspension bearing, thrust disc and rotor；
The left axial magnetic suspension bearing, right axial magnetic suspension bearing are each attached on bearing block, and left axial magnetic suspension bearing,
The installation gap of thrust disc is formed between right axial magnetic suspension bearing；
The thrust disc is fixed on the rotor, and the circumferential wall of thrust disc extends in the installation gap of thrust disc；
On the inner edge for the end face that the left axial magnetic suspension bearing, right axial magnetic suspension bearing correspond to thrust disc circumferential wall all
Even to be equipped with several helicla flutes, the width of helicla flute attenuates by width from outside to inside, and on same end face helicla flute rotation direction it is identical；
It is revolved between the left axial magnetic suspension bearing and thrust disc, between right axial magnetic suspension bearing and thrust disc in rotor high speed
Axial hydrodynamic air film is capable of forming when turning.
2. axial magnetic suspension bearing structure according to claim 1, which is characterized in that the thrust disc and rotor passed through
It is full of mating connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821806998.4U CN209262071U (en) | 2018-11-05 | 2018-11-05 | A kind of axial magnetic suspension bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821806998.4U CN209262071U (en) | 2018-11-05 | 2018-11-05 | A kind of axial magnetic suspension bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209262071U true CN209262071U (en) | 2019-08-16 |
Family
ID=67558317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821806998.4U Active CN209262071U (en) | 2018-11-05 | 2018-11-05 | A kind of axial magnetic suspension bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209262071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322916A (en) * | 2018-11-05 | 2019-02-12 | 南京航空航天大学 | A kind of axial magnetic suspension bearing structure |
| CN111623038A (en) * | 2020-07-06 | 2020-09-04 | 德本恒嘉精机(昆山)有限公司 | Ultrahigh-precision hydrostatic bearing |
-
2018
- 2018-11-05 CN CN201821806998.4U patent/CN209262071U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322916A (en) * | 2018-11-05 | 2019-02-12 | 南京航空航天大学 | A kind of axial magnetic suspension bearing structure |
| CN111623038A (en) * | 2020-07-06 | 2020-09-04 | 德本恒嘉精机(昆山)有限公司 | Ultrahigh-precision hydrostatic bearing |
| CN111623038B (en) * | 2020-07-06 | 2023-08-29 | 德本恒嘉精机(昆山)有限公司 | Ultra-high precision hydrostatic bearing |
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