CN105703520A - Air bearing-assisted magnetic suspension bearing high speed motor - Google Patents
Air bearing-assisted magnetic suspension bearing high speed motor Download PDFInfo
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- CN105703520A CN105703520A CN201410678554.7A CN201410678554A CN105703520A CN 105703520 A CN105703520 A CN 105703520A CN 201410678554 A CN201410678554 A CN 201410678554A CN 105703520 A CN105703520 A CN 105703520A
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- air bearing
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Abstract
The invention discloses an air bearing-assisted magnetic suspension bearing high speed motor. A shaft cover, a first air bearing, a motor housing, a second air bearing, and a rear end cover are sequentially fixedly arranged to form a stator. A rotor and an air bearing shaft hole are in a clearance fit. The inner side wall of the shaft cover is provided with a first conical surface annular-shaped magnet. Two ends of the motor shaft are respectively fixedly provided with a second conical surface annular-shaped magnet and a third conical surface annular-shaped magnet. The inner side wall of the rear end cover is fixedly provided with a fourth conical surface annular-shaped magnet. The first conical surface annular-shaped magnet and the second conical surface annular-shaped magnet are paired, and like poles repel. The other two magnets are also paired, and like poles repel. The air bearing-assisted magnetic suspension bearing high speed motor is advantageous in that by combining the advantages of the air bearing and the advantages of the permanent magnet suspension bearing, a great amount of compressed air can be saved, and the motor operation efficiency can be improved by half.
Description
Technical field
The present invention relates to a kind of motor, be specifically related to a kind of magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary。
Background technology
It is applied in high-speed main spindle (the mainly occasion of underloading, high speed on lathe at present, working speed per minute 100,000 turn-35 ten thousand turns, such as PCB boring machine etc.) what adopt is the high-speed electric expreess locomotive of compressed air bearing support, this motor uses now in a large number, technology maturation, but this motor needs to expend substantial amounts of compression air (the air compressor machine power of motor supporting about the 1KW of needs of general 1KW), work efficiency is not high and safeguards loaded down with trivial details, also have and adopt small-sized machine bearing, but rotating speed is typically in less than 80,000 turns, and power of motor needs to strengthen, inefficient。
Summary of the invention
In order to overcome the energy consumption problem and maintenance issues that spindle motor that present compressed air bearing supports causes because needing compression air in a large number, present invention employs the advantage of air bearing and permanent-magnet suspension bearing to be combined with each other, only compression air within former seconds, need to be passed at electric motor starting, reach can cut off after rated speed compression air until motor, only rely on permanent-magnet suspension bearing to be supported running, such that it is able to the compression air of saving more than 95 percent, thus synthesis energy saving about percent about 45。
In order to achieve the above object, this invention takes techniques below scheme: the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary of the present invention, including drive end bearing bracket, rear end cap, electric machine casing, shaft-cup, rotor, first air bearing, second air bearing, shaft-cup, first air bearing, electric machine casing, second air bearing, rear end cap is arranged in order fixed installation composition stator, rotor is located at stator center by motor shaft, rotor is connected with the first air bearing axis hole and the second air bearing shaft interporal lacuna respectively, motor shaft traverse shaft-cup centre bore and rear end cap centre bore, drive end bearing bracket screw-casing sympodium lid, described shaft-cup medial wall fixedly mounts the first conical surface toroidal magnet, described motor shaft two ends fixedly mount the second conical surface toroidal magnet and having three pyramidal faces toroidal magnet respectively, described rear end cap medial wall fixed installation the 4th conical surface toroidal magnet, described first conical surface toroidal magnet and described second conical surface toroidal magnet homopolar-repulsion pairing, described having three pyramidal faces toroidal magnet and described 4th conical surface toroidal magnet homopolar-repulsion pairing；Being provided with breather line inside described shaft-cup, the end face fixing the first air bearing being connected with described electric machine casing and described shaft-cup is provided with duct, is provided with gas storehouse, is interconnected between described duct and described breather line, described gas storehouse inside described electric machine casing；Described gas storehouse offers two gas outlets, connects with the blowhole of the blowhole of described first air bearing and described second air bearing respectively；Described drive end bearing bracket is provided with air access port, described air access port connects with breather line, the gas entered from described air access port enters gas storehouse through breather line and duct, and after, the gas outlet on gas storehouse respectively enters the first air bearing blowhole and the second air bearing blowhole。
Preferably, described rotor is cage rotor。
Concrete, stator coil is fixedly mounted on described electric machine casing medial wall, and described stator coil position can be designed in the middle part of described electric machine casing medial wall or end as required。
Concrete, described first conical surface toroidal magnet and described second conical surface toroidal magnet homopolar-repulsion match cylindrical structure, form magnetic suspension bearing；Described having three pyramidal faces toroidal magnet and the described 4th conical surface toroidal magnet homopolar-repulsion cylindrical structure of pairing, form magnetic suspension bearing。
Preferably, described first air bearing and described second air bearing are the air bearing that can produce radially buoyancy。
Preferably, the stand-off distance that described rotor and the first air bearing axis hole and the second air bearing shaft interporal lacuna coordinate is 15-50 μm。
The invention has the beneficial effects as follows: have employed the advantage of air bearing and permanent-magnet suspension bearing and be combined with each other, save substantial amounts of compression air, the compression air of 95 percent can be saved by simple analysis, thus reaching to improve the motor operational efficiency of half。
Accompanying drawing explanation
Fig. 1 is the present invention sectional view along axis。
Detailed description of the invention
The invention provides a kind of magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary, for making the purpose of the present invention, technical scheme and effect more preferably clear, clear and definite, below with reference to accompanying drawing examples, the present invention is described in more detail, it is to be understood that, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the present invention sectional view along axis。
As it is shown in figure 1, the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary of the present invention, including drive end bearing bracket 1, rear end cap 2, electric machine casing 3, shaft-cup 4, rotor 5, first air bearing 6, second air bearing 7, shaft-cup 4, first air bearing 6, electric machine casing 3, second air bearing 7, rear end cap 2 is arranged in order fixed installation composition stator, rotor 5 is located at stator center by motor shaft 8, rotor 5 is connected with the first air bearing 6 axis hole and the second air bearing 7 axis hole matched in clearance respectively, motor shaft 8 traverse shaft-cup 4 centre bore and rear end cap 2 centre bore, drive end bearing bracket 1 screw-casing sympodium lid 4, shaft-cup 4 medial wall fixedly mounts the first conical surface toroidal magnet 9, motor shaft 8 two ends fixedly mount the second conical surface toroidal magnet 10 and having three pyramidal faces toroidal magnet 11 respectively, rear end cap 2 medial wall fixed installation the 4th conical surface toroidal magnet 12, first conical surface toroidal magnet 9 and the pairing of the second conical surface toroidal magnet 10 homopolar-repulsion, having three pyramidal faces toroidal magnet 11 and the pairing of the 4th conical surface toroidal magnet 12 homopolar-repulsion；Shaft-cup 4 is internal is provided with breather line 13, is provided with duct 14 with the end face of electric machine casing 3 and fixing the first air bearing 6 being connected of shaft-cup 4, and electric machine casing 3 is internal is provided with gas storehouse 15, is interconnected between duct 14 and breather line 13, gas storehouse 15；Gas storehouse 15 offers two gas outlets, connects with the blowhole 16 of the first air bearing 6 and the blowhole 17 of the second air bearing 7 respectively；Drive end bearing bracket 1 is provided with air access port 18, air access port 18 connects with breather line 13, the gas entered from air access port 18 enters gas storehouse 15 through breather line 13 and duct 14, and after, the gas outlet on gas storehouse 15 respectively enters the first air bearing blowhole 16 and the second air bearing blowhole 17。
In the present embodiment, rotor 5 is cage rotor, stator coil 19 is fixedly mounted on electric machine casing 3 medial wall, the position of stator coil 19 can be designed in the middle part of electric machine casing 3 medial wall or end as required, now mouse cage 20 position also changes accordingly, mating with stator coil, when stator coil 19 designs when electric machine casing 3 end, medial wall, the first air bearing 6 or the second air bearing position 7 that are positioned at electric machine casing 3 end move in the middle part of electric machine casing 3。
In the present embodiment, the first conical surface toroidal magnet 9 and the second conical surface toroidal magnet 10 homopolar-repulsion cylindrical structure of pairing, composition magnetic suspension bearing；Having three pyramidal faces toroidal magnet 11 and the 4th conical surface toroidal magnet 12 homopolar-repulsion cylindrical structure of pairing, form magnetic suspension bearing。
In the present embodiment, the first air bearing 6 and the second air bearing 7 are the air bearing that can produce radially buoyancy。
Preferably, the stand-off distance of rotor 5 and the first air bearing 6 axis hole and the second air bearing 7 axis hole matched in clearance is 15-50 μm, it is ensured that aerostatic buoyancy。
The operation principle of the present invention is as follows: when motor needs before startup, first pass into compression air from air access port 18, compression air flows through breather line 13, gentle storehouse 15, duct 14, finally enter air bearing, air bearing can produce pressure by stable suspersion parallel with the rotor relative stator that air bearing shaft interporal lacuna is connected, simultaneously because the promotion of the magnetic suspension bearing at two ends makes rotor keep axial suspension stable, now rotor can stable suspersion in the stator between air-gap in, pass into corresponding electric current again, rotor will unsettled rotate, after reaching certain rotating speed, turn off compression air, due to gyroscopic effect, the rotating shaft of rotor points to and will not change, and stator side is forced through Newtonian mechanics analysis by magnetic suspension bearing rotor side, radial and axial two component can be subject to, so the stable heart in the stator is rotated by rotor。
Embodiment described above only have expressed one embodiment of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; it should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise; some deformation and improvement can also be made; these broadly fall into protection scope of the present invention, and therefore, the protection domain of patent of the present invention should be as the criterion with claims。
Claims (6)
1. the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary, including drive end bearing bracket, rear end cap, electric machine casing, shaft-cup, rotor, first air bearing, second air bearing, shaft-cup, first air bearing, electric machine casing, second air bearing, rear end cap is arranged in order fixed installation composition stator, rotor is located at stator center by motor shaft, rotor is connected with the first air bearing axis hole and the second air bearing shaft interporal lacuna respectively, motor shaft traverse shaft-cup centre bore and rear end cap centre bore, drive end bearing bracket screw-casing sympodium lid, it is characterized in that: described shaft-cup medial wall fixedly mounts the first conical surface toroidal magnet, described motor shaft two ends fixedly mount the second conical surface toroidal magnet and having three pyramidal faces toroidal magnet respectively, described rear end cap medial wall fixed installation the 4th conical surface toroidal magnet, described first conical surface toroidal magnet and described second conical surface toroidal magnet homopolar-repulsion pairing, described having three pyramidal faces toroidal magnet and described 4th conical surface toroidal magnet homopolar-repulsion pairing；Being provided with breather line inside described shaft-cup, the end face fixing the first air bearing being connected with described electric machine casing and described shaft-cup is provided with duct, is provided with gas storehouse, is interconnected between described duct and described breather line, described gas storehouse inside described electric machine casing；Described gas storehouse offers two gas outlets, connects with the blowhole of the blowhole of described first air bearing and described second air bearing respectively；Described drive end bearing bracket is provided with air access port, described air access port connects with breather line, the gas entered from described air access port enters gas storehouse through breather line and duct, and after, the gas outlet on gas storehouse respectively enters the first air bearing blowhole and the second air bearing blowhole。
2. the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary according to claim 1, it is characterised in that: described rotor is cage rotor。
3. the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary according to claim 1, it is characterized in that: stator coil is fixedly mounted on described electric machine casing medial wall, described stator coil position can be designed in the middle part of described electric machine casing medial wall or end as required。
4. the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary according to claim 1, it is characterised in that: described first conical surface toroidal magnet and the described second conical surface toroidal magnet homopolar-repulsion cylindrical structure of pairing, form magnetic suspension bearing；Described having three pyramidal faces toroidal magnet and the described 4th conical surface toroidal magnet homopolar-repulsion cylindrical structure of pairing, form magnetic suspension bearing。
5. the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary according to claim 1, it is characterised in that: described first air bearing and described second air bearing are the air bearing that can produce radially buoyancy。
6. the magnetic suspension bearing high-speed electric expreess locomotive with air bearing auxiliary according to claim 1, it is characterised in that: the stand-off distance that described rotor and the first air bearing axis hole and the second air bearing shaft interporal lacuna coordinate is 15-50 μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410678554.7A CN105703520B (en) | 2014-11-24 | 2014-11-24 | Magnetic suspension bearing high-speed motor with air bearing auxiliary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410678554.7A CN105703520B (en) | 2014-11-24 | 2014-11-24 | Magnetic suspension bearing high-speed motor with air bearing auxiliary |
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| Publication Number | Publication Date |
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| CN105703520A true CN105703520A (en) | 2016-06-22 |
| CN105703520B CN105703520B (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410678554.7A Active CN105703520B (en) | 2014-11-24 | 2014-11-24 | Magnetic suspension bearing high-speed motor with air bearing auxiliary |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477487A (en) * | 2016-07-25 | 2019-03-15 | 大金应用美国股份有限公司 | Centrifugal compressor and magnetic bearing back-up system for centrifugal compressor |
| CN111049309A (en) * | 2019-12-11 | 2020-04-21 | 无锡市源昌机械制造有限公司 | High-performance air bearing motor |
| CN111189479A (en) * | 2018-11-14 | 2020-05-22 | 由田新技股份有限公司 | Inverted hanging type double-sided optical detection equipment |
| CN112039262A (en) * | 2020-08-04 | 2020-12-04 | 东莞市锐天机电科技有限公司 | Motor and air suspension centrifugal fan applying same |
| CN113819143A (en) * | 2021-09-30 | 2021-12-21 | 北京京冶轴承股份有限公司 | High-speed train bogie hybrid support device and bogie |
| CN114251359A (en) * | 2021-11-19 | 2022-03-29 | 青岛海尔空调电子有限公司 | Compressor and refrigerating system |
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| DE102008029482A1 (en) * | 2008-06-20 | 2009-12-24 | Schaeffler Kg | Bearing, particularly bearing of thread guiding roller of textile machine, for shaft at axle, has magnetic radial bearing and another magnetic radial bearing at axial distance from former magnetic radial bearing |
| CN201696491U (en) * | 2010-05-24 | 2011-01-05 | 山东科技大学 | Conical permanent magnetic suspended inner rotor hybrid magnetic bearing |
| CN103189659A (en) * | 2010-10-29 | 2013-07-03 | 奥依列斯工业株式会社 | Roll device |
| CN104006079A (en) * | 2014-05-07 | 2014-08-27 | 西安理工大学 | Halbach tapered permanent magnetic bearing comprising permanent magnetic rings having triangular cross sections |
| CN204118949U (en) * | 2014-11-24 | 2015-01-21 | 雷虹桥 | With the magnetic suspension bearing high-speed electric expreess locomotive that air bearing is auxiliary |
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2014
- 2014-11-24 CN CN201410678554.7A patent/CN105703520B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102008029482A1 (en) * | 2008-06-20 | 2009-12-24 | Schaeffler Kg | Bearing, particularly bearing of thread guiding roller of textile machine, for shaft at axle, has magnetic radial bearing and another magnetic radial bearing at axial distance from former magnetic radial bearing |
| CN201696491U (en) * | 2010-05-24 | 2011-01-05 | 山东科技大学 | Conical permanent magnetic suspended inner rotor hybrid magnetic bearing |
| CN103189659A (en) * | 2010-10-29 | 2013-07-03 | 奥依列斯工业株式会社 | Roll device |
| CN104006079A (en) * | 2014-05-07 | 2014-08-27 | 西安理工大学 | Halbach tapered permanent magnetic bearing comprising permanent magnetic rings having triangular cross sections |
| CN204118949U (en) * | 2014-11-24 | 2015-01-21 | 雷虹桥 | With the magnetic suspension bearing high-speed electric expreess locomotive that air bearing is auxiliary |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477487A (en) * | 2016-07-25 | 2019-03-15 | 大金应用美国股份有限公司 | Centrifugal compressor and magnetic bearing back-up system for centrifugal compressor |
| CN111189479A (en) * | 2018-11-14 | 2020-05-22 | 由田新技股份有限公司 | Inverted hanging type double-sided optical detection equipment |
| CN111049309A (en) * | 2019-12-11 | 2020-04-21 | 无锡市源昌机械制造有限公司 | High-performance air bearing motor |
| CN112039262A (en) * | 2020-08-04 | 2020-12-04 | 东莞市锐天机电科技有限公司 | Motor and air suspension centrifugal fan applying same |
| CN113819143A (en) * | 2021-09-30 | 2021-12-21 | 北京京冶轴承股份有限公司 | High-speed train bogie hybrid support device and bogie |
| CN113819143B (en) * | 2021-09-30 | 2023-12-22 | 北京京冶轴承股份有限公司 | Mixed strutting arrangement of high-speed train bogie and bogie |
| CN114251359A (en) * | 2021-11-19 | 2022-03-29 | 青岛海尔空调电子有限公司 | Compressor and refrigerating system |
| WO2023087730A1 (en) * | 2021-11-19 | 2023-05-25 | 青岛海尔空调电子有限公司 | Compressor and refrigeration system |
| CN114251359B (en) * | 2021-11-19 | 2024-06-07 | 青岛海尔空调电子有限公司 | Compressor and refrigerating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105703520B (en) | 2018-11-20 |
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