CN101752949A - Rolling bearing type rotor support and high-speed induction electrical rotating machine - Google Patents
Rolling bearing type rotor support and high-speed induction electrical rotating machine Download PDFInfo
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- CN101752949A CN101752949A CN200810233188A CN200810233188A CN101752949A CN 101752949 A CN101752949 A CN 101752949A CN 200810233188 A CN200810233188 A CN 200810233188A CN 200810233188 A CN200810233188 A CN 200810233188A CN 101752949 A CN101752949 A CN 101752949A
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Abstract
The invention discloses a rolling bearing type rotor support for a high-speed induction electrical rotating machine, which comprises double-row semi-floating rolling bearings symmetrically arranged on two sides of a rotor, a bearing seat, water jacket covers, a stopping block and other accessories. Two angular contact ball bearings are arranged in the floating sleeve of each row of semi-floating rolling bearings; O-shaped rubber sealing rings are arranged on two end parts of an outer circle of the floating sleeve in a shaft hole in the bearing seat and the stopping block is arranged on the bearing seat to limit the rotation of the floating sleeve and to render the floating sleeve in a semi-floating state; and the bearing seat forms a cooling water jacket of the rotor support together with water jacket covers; the water jacket covers, cover plates and linings form a lubricating oil end part sealing device of the rotor support. When the high-speed induction electrical rotating machine adopting the rotor support of the invention is arranged on a vehicle and rotates at a high speed of 60,000 r/min, the elastic supports of the semi-floating rolling bearings and the pressure oil film-rubber damping vibration attenuation between the supports guarantee stable and reliable system operation.
Description
Technical field
The present invention relates to a kind of rolling bearing type rotor support that is used for high-speed induction electrical rotating machine, being particularly related to and being used to be installed in transport facility---the rotor bearing by high-capacity and high-speed induction motor driven air refrigeration machine, air compressor etc. on the vehicle etc., its rotor is for example to be not less than the high speed rotating of the tens thousand of commentaries on classics of per minute.
Background technology
One of technical problem underlying of high-power, high-revolving high-speed induction motor (20kw is more than the 60000/min) design is exactly a design bearing.At present, this high-power, high-revolving motor bearings design is generally all considered to adopt the active magnetic bearing support pattern of electromagnetic bearing and rolling bearing mixing bearing, but this magnetic bearing automatically controlled and make complicatedly costs an arm and a leg, reliability is lower, at present can't commercialization; The use that reasons such as the friction loss of liquid sliding bearing during because of motor high speed rotating bearing capacity big and the air sliding bearing is little also are subjected to a certain degree limits.
The invention provides a kind of rolling bearing type rotor support that is installed on the transport facility that is applicable to, system's reliability service has been played crucial effects by application such as high-speed induction motor driven air refrigeration machine, air compressors.
Summary of the invention
The technical scheme that invention is adopted is the rotor both sides at high-speed induction electrical rotating machine, symmetric arrangement biserial semi-floating rolling bearing.Its main design philosophy is, because the external applied load when high-speed induction motor driven air refrigeration machine, air compressor running is even, and the running accuracy requirement to rotor system is not very high, take the inner and outer ring of Ceramic Balls angular contact ball bearing is carried out jet lubrication simultaneously the high-speed induction motor service conditions requirement of be enough to satisfy about 20kW, 60000r/min is above; On the other hand, owing to be installed in high-speed induction motor driven air refrigeration machine on the transport facility, the air compressor work and can't avoid vibration, and a variety of causes that works long hours of rotor, dynamic balance accuracy might destroy to some extent, for guaranteeing that motor bearings has long working life, except requiring rotor initially just to have certain dynamic balance accuracy, what is more important makes bearing want to absorb vibrational energy, works reliably to guarantee bearing.For this reason, utilize fit clearance between semi-floating rolling bearing and bearing saddle bore and pressure oil film wherein, form elastic bearing and oil film vibration isolator and absorb vibrational energy.
The invention has the beneficial effects as follows, owing to take the inner and outer ring of Ceramic Balls angular contact ball bearing is carried out jet lubrication simultaneously, and the elastic bearing effect of semi-floating rolling bearing, when the rotor of high-speed induction electrical rotating machine turns round more than 60000r/min, system's stable and reliable operation.
Description of drawings
Fig. 1 is a kind of embodiment front view of cold air machine of the high-speed induction electrical rotating machine that comprises rotor bearing of the present invention.
Fig. 2 is the front view of rotor bearing of the present invention.
Fig. 3 is the front view of the semi-floating rolling bearing among Fig. 2.
Fig. 4 is the view of the water jacket plug of band " abrasive disk type " oil expulsion channel among Fig. 2.
Embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are described.Fig. 1 is expressed as a kind of front view of cold air machine 1, and this refrigeration machine 1 is directly driven by a motor 4 that comprises rotor bearing 7 of the present invention.Among Fig. 1, cold air machine 1 comprises a motor 4 in the middle.Motor 4 comprises rotor 2 and stator 3.Rotor 2 both sides opposed biserial semi-floating rolling bearing 5.The cooling jacket that soldering is formed stator 3 by the stator overcoat 9 and the body 8 of radiating fin 10.Refrigeration impeller 11 and compression impellor 6 are fixed on two shaft ends of rotor 2.Introduce part cold air from the turbine outlet and enter motor 4 inner coolings.
Fig. 2 represents the rotor bearing 7 of above-mentioned cold air machine 1.Comprise: rotor 2 both sides opposed biserial semi-floating rolling bearing 5, bearing pedestal 15, left water jacket plug 13, right water jacket plug 17, left cover 12, right cover plate 18, left lining 16, right lining 19, block 14 and other annex.
Among Fig. 2, bearing pedestal 15 is formed left cooling jacket with left water jacket plug 13, and bearing pedestal 15 is formed right cooling jacket with right water jacket plug 17.
The arranged outside of left side water jacket plug 13 and right water jacket plug 17 has represented " abrasive disk type " oil expulsion channel of Fig. 4, and separately with left cover 12 and left lining 16, right cover plate 18 and right lining 19 are formed the lubricating oil end seal of left and right sides rotor bearing 7.
Circlip for shaft 20 is housed, restrict rotor 2 left and right sides plaies on the outboard end of floating bushing 21.
Among Fig. 3, in the floating bushing 21 of every row semi-floating rolling bearing 5 two Ceramic Balls angular contact ball bearing 22a, 22b are installed, have the cannelure oil leab on the outer shroud of bearing 22a, 22b and uniform three diameters are 0.5mm-0.8mm on the circumference of cannelure little spray orifice, the oil duct of jet lubrication and cooling is carried out in formation to bearing 22a, 22b by outer shroud, penetrate lubricated acting in conjunction with interior ring spray, improved useful life and the limit speed of bearing 22a, 22b.
The outer shroud of the outer shroud of bearing 22b, interior oil spout lining ring 27, disk spring 26, push rod circle 25, outer oil spout lining ring 23, push rod 24 and bearing 22a embeds in floating bushing 21 holes successively, between little axle sleeve 30, large shaft sleeve 29 are placed in and encircle in two bearings 22a, the 22b, outer oil spout lining ring 23 maintains static, and interior oil spout lining ring 27 only moves axially.Than outer oil spout lining ring 23 length
The push rod 24 of rotor 2 maximum heat elongation Δ mm is packed on the outer oil spout lining ring 23 in uniform four pilot holes, and makes between outer oil spout lining ring 23 and the push rod circle 25 and keep
The gap, the axial thermal stretching play when being used as rotor 2 work.
Interior oil spout lining ring 27, disk spring 26, push rod circle 25 and push rod 24 common level pressure pretension and the compensating axial play that constitute two bearings 22a, 22b.
The fit clearance that has 0.08-0.15mm between floating bushing 21 and bearing pedestal 15 axis holes, outer end one side of inner side of the cylindrical of floating bushing 21 and bearing pedestal 15 axis holes respectively is embedded with twice O shape rubber seal 28, the floating bushing 21 that embeds in bearing pedestal 15 axis holes utilizes the block 14 restriction floating bushings 21 that are provided with on the bearing pedestal 15 to rotate, and makes floating bushing 21 be in the semifloating state.
When cold air machine 1 work, by represented the passing through of Fig. 2, Fig. 3 bearing 22a, 22b inner and outer ring are carried out jet lubrication and cooling simultaneously, can further improve the useful life and the limit speed of bearing on the one hand; On the other hand, utilize fit clearance and pressure oil film wherein and O shape rubber seal 28 between floating bushing 21 and bearing pedestal 15 axis holes, form the oil film-rubber damping vibration attenuation device of semi-floating rolling bearing 5, make the cold air machine 1 that is installed on the passenger vehicle reliable, and, can also take away a part of heat of semi-floating rolling bearing 5 by the lubricating oil between floating bushing 21 and bearing pedestal 15 axis holes, very favourable to bearing operation.
Because rotor bearing 7 structures among Fig. 2, by the represented cold air machine 1 of Fig. 1, effect is significant during high-speed cruising.
Claims (4)
1. a high-speed induction electrical rotating machine comprising: rotor (2) both sides opposed biserial semi-floating rolling bearings (5), bearing pedestal (15), left water jacket plug (13), right water jacket plug (17), left cover (12), right cover plate (18), left lining (16), right lining (19), block (14) and other annex with rolling bearing type rotor support (7).
2. biserial semi-floating rolling bearing according to claim 1 (5) is characterized in that,
Two Ceramic Balls angular contact ball bearings (22a, 22b) are installed in the floating bushing (21) of every row semi-floating rolling bearing (5), have the cannelure oil leab on the outer shroud of bearing (22a, 22b) and on the circumference of cannelure uniform several apertures, form the outer shroud oil leab that bearing (22a, 22b) is carried out jet lubrication and cooling by outer shroud;
The outer shroud of the outer shroud of bearing (22b), interior oil spout lining ring (27), disk spring (26), push rod circle (25), outer oil spout lining ring (23), push rod (24) and bearing (22a) embeds in floating bushing (21) hole successively, between little axle sleeve (30), large shaft sleeve (29) are placed in and encircle in the two bearings (22a, 22b), outer oil spout lining ring (23) maintains static, interior oil spout lining ring (27) only moves axially, and is longer than outer oil spout lining ring (23)
The push rod (24) of the maximum heat elongation Amm outer oil spout lining ring (23) of packing into is gone up in four uniform pilot holes, and makes maintenance between outer oil spout lining ring (23) and the push rod circle (25)
The gap, common level pressure pretension and the compensating axial play that constitutes two bearings (22a, 22b) of interior oil spout lining ring (27), disk spring (26), push rod circle (25) and push rod (24);
Has certain fit clearance between floating bushing (21) and bearing pedestal (15) axis hole, outer end one side of inner side of the cylindrical of floating bushing (21) and bearing pedestal (15) axis hole respectively is embedded with 1～2 road O shape rubber seal (28), the block (14) that floating bushing (21) in embedding bearing pedestal (15) axis hole utilizes bearing pedestal (15) to go up and is provided with limits floating bushing (21) rotation, makes floating bushing (21) be in the semifloating state.
3. rotor bearing according to claim 1 (7) is characterized in that,
Utilize fit clearance and pressure oil film wherein and O shape rubber seal (28) between floating bushing (21) and bearing pedestal (15) axis hole, form the elastic bearing and the oil film-rubber damping vibration attenuation device of semi-floating rolling bearing (5);
Bearing pedestal (15) is formed left cooling jacket with left water jacket plug (13), and bearing pedestal (15) is formed right cooling jacket with right water jacket plug (17);
The arranged outside of left side water jacket plug (13) and right water jacket plug (17) has " abrasive disk type " oil expulsion channel, and separately with left cover (12) and left lining (16), right cover plate (18) and right lining (19) are formed the lubricating oil end seal of left and right sides rotor bearing (7);
Circlip for shaft (20) is housed, restrict rotor (2) left and right sides play on the outboard end of floating bushing (21).
4. a high-speed induction electrical rotating machine comprises one by the described rotor bearing of claim 1 (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810233188A CN101752949A (en) | 2008-12-02 | 2008-12-02 | Rolling bearing type rotor support and high-speed induction electrical rotating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810233188A CN101752949A (en) | 2008-12-02 | 2008-12-02 | Rolling bearing type rotor support and high-speed induction electrical rotating machine |
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| Publication Number | Publication Date |
|---|---|
| CN101752949A true CN101752949A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810233188A Pending CN101752949A (en) | 2008-12-02 | 2008-12-02 | Rolling bearing type rotor support and high-speed induction electrical rotating machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705366A (en) * | 2011-03-28 | 2012-10-03 | 何君 | Bearing for air refrigerating machine driven by high-speed motor and the air refrigerating machine |
| CN104833568A (en) * | 2015-05-06 | 2015-08-12 | 上海理工大学 | Vibration damping device for optical glass ultrasonic vibration indentation experiment |
| CN106253553A (en) * | 2015-06-09 | 2016-12-21 | 雷勃美国公司 | Motor, assembly and correlation technique |
| CN108366483A (en) * | 2018-02-11 | 2018-08-03 | 沈阳东软医疗系统有限公司 | Accelerating tube and clinac with the accelerating tube |
| CN110360230A (en) * | 2019-07-11 | 2019-10-22 | 深圳市爱贝科精密机械有限公司 | A kind of oil pressure floating bearing component for electro spindle |
| CN114696517A (en) * | 2020-12-30 | 2022-07-01 | 启洋电机株式会社 | Electric motor comprising a tensioning element |
| CN114761366A (en) * | 2019-09-10 | 2022-07-15 | 洛科威国际有限公司 | Rotor |
| CN116792415A (en) * | 2023-06-19 | 2023-09-22 | 清研新能源汽车工程中心（襄阳）有限公司 | High-speed bearing pedestal |
| WO2023245735A1 (en) * | 2022-06-24 | 2023-12-28 | 深圳市一晤未来科技有限公司 | Composite motion electric motor having ball bushing, and electric toothbrush |
-
2008
- 2008-12-02 CN CN200810233188A patent/CN101752949A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705366A (en) * | 2011-03-28 | 2012-10-03 | 何君 | Bearing for air refrigerating machine driven by high-speed motor and the air refrigerating machine |
| CN104833568B (en) * | 2015-05-06 | 2017-06-06 | 上海理工大学 | For the vibration absorber of optical glass ultrasonic vibration indentation test |
| CN104833568A (en) * | 2015-05-06 | 2015-08-12 | 上海理工大学 | Vibration damping device for optical glass ultrasonic vibration indentation experiment |
| CN106253553B (en) * | 2015-06-09 | 2020-07-17 | 雷勃美国公司 | Electric machine, assembly and related method |
| CN106253553A (en) * | 2015-06-09 | 2016-12-21 | 雷勃美国公司 | Motor, assembly and correlation technique |
| CN108366483A (en) * | 2018-02-11 | 2018-08-03 | 沈阳东软医疗系统有限公司 | Accelerating tube and clinac with the accelerating tube |
| CN110360230A (en) * | 2019-07-11 | 2019-10-22 | 深圳市爱贝科精密机械有限公司 | A kind of oil pressure floating bearing component for electro spindle |
| CN114761366A (en) * | 2019-09-10 | 2022-07-15 | 洛科威国际有限公司 | Rotor |
| US20220340474A1 (en) * | 2019-09-10 | 2022-10-27 | Rockwool International A/S | Rotor |
| CN114696517A (en) * | 2020-12-30 | 2022-07-01 | 启洋电机株式会社 | Electric motor comprising a tensioning element |
| US11770046B2 (en) | 2020-12-30 | 2023-09-26 | Keyang Electric Machinery Co., Ltd. | Motor including tension member |
| CN114696517B (en) * | 2020-12-30 | 2024-01-26 | 启洋电机株式会社 | Electric motor comprising a tensioning member |
| WO2023245735A1 (en) * | 2022-06-24 | 2023-12-28 | 深圳市一晤未来科技有限公司 | Composite motion electric motor having ball bushing, and electric toothbrush |
| CN116792415A (en) * | 2023-06-19 | 2023-09-22 | 清研新能源汽车工程中心（襄阳）有限公司 | High-speed bearing pedestal |
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Open date: 20100623 |