CN108488232A - 一种带有多孔介质垫片的磁气双悬浮径向轴承 - Google Patents
一种带有多孔介质垫片的磁气双悬浮径向轴承 Download PDFInfo
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- 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
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
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- 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
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
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- 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
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
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- 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
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
- F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
- F16C32/0618—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings via porous material
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- 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
- F16C37/00—Cooling of bearings
- F16C37/005—Cooling of bearings of magnetic bearings
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- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
一种带有多孔介质垫片的磁气双悬浮径向轴承,其主要是:定子内固定8个径向磁极,其每个自由端顶设有凹槽。在每个磁极内各设一个进气孔,该进气孔一端设在空心圆柱壳体外,另一端设在磁极凹槽底上,在每个凹槽开口上设有不导磁多孔介质垫片,8个多孔介质垫片非固定一面均与同一空心导磁套表面接触。空心导磁套内设有主轴,所述每个磁极上各套接一个漆包线圈,磁极表面按照NSSNNSSN方式排列,每对磁极均以导磁套为磁通回路。定子壳体两端设端盖。本发明能够集空气静压支承系统及电磁悬浮支承系统两种支承系统优势于一身,无需单独配备辅助支承及循环冷却系统,能够大幅度减小轴承的摩擦及磨损,提高承载能力及刚度。
Description
技术领域
本发明涉及一种滑动轴承。
背景技术
空气静压轴承具有小摩擦、小功率、高转速、清洁性高等优点,因此得到普遍重视和广泛应用。空气静压轴承采用空气作为润滑介质,当外部压缩气体通过节流器进入轴承间隙,就会在间隙中形成一层具有一定承载和刚度的润滑气膜,依靠该气膜的润滑支承作用将轴浮起在轴承中。但空气静压轴承的承载力和支撑刚度较低。
发明内容
本发明的目的是提供一种能明显提高承载力和支承刚度的带有多孔介质垫片的磁气双悬浮径向轴承。本发明是采用空气静压支承和电磁悬浮支承相结合的一种磁气双悬浮径向轴承。
本发明定子为空心圆柱壳体,内周面固定有均布的8个径向磁极的一端,8个径向磁极的另一端为自由端,且每个自由端顶尺寸大于非端顶尺寸,在每个自由端顶设有凹槽。在每个磁极内各设一个径向通孔即进气孔,该进气孔一端设在空心圆柱壳体外,最好,每个进气孔外端与进气弯管接头一端相连,进气孔另一端设在磁极凹槽底上,在每个凹槽开口上设有(熔融或粘接)与其对应并将其覆盖的不导磁多孔介质垫片,8个多孔介质垫片非固定一面均与同一空心导磁套表面接触。空心导磁套内设有主轴,最好在主轴上设两道径向凹槽即卡盘槽,两卡盘槽内设轴向固定卡盘,用于将导磁套进行轴向定位。所述每个磁极上各套接一个漆包线圈,控制每个线圈的绕线方式,使磁极表面按照NSSNNSSN方式排列,每相邻2个磁极为一对,每对磁极均以导磁套为磁通回路。定子壳体两端设将其端面覆盖的两个盘形圆环端盖,该中心通孔呈阶梯形,其上设与主轴对应的骨架密封圈,在骨架密封圈外设与其对应的盘形圆环密封骨架端盖,该可将骨架密封圈覆盖的密封骨架端盖中心通孔与主轴对应,并通过紧固件固定在端盖上。在定子壳体上设有与内腔连通的排气孔,最好排气孔外端装有消音器。
本发明与现有技术相比具有如下优点:
本发明能够集空气静压支承系统及电磁悬浮支承系统两种支承系统优势于一身,无需单独配备辅助支承及循环冷却系统,能够大幅度减小轴承的摩擦及磨损,提高承载能力及刚度。
附图说明
图1是本发明立体示意简图;
图2是本发明轴向剖视示意简图;
图3是本发明径向剖视示意简图;
图4是本发明定子立体示意简图;
图5是本发明端盖主视示意简图;
图6是图5的A-A视图。
图7是本发明骨架密封端盖主视示意简图;
图8是图7的B-B视图;
图9是主轴主视示意简图。
图中:1、主轴,2、螺栓,3、弯管接头,4、消音器,5、端盖,6、定子,7、螺母,8、密封骨架端盖,9、六角螺钉,10、固定卡盘,11、骨架密封圈,12、导磁套,13、漆包线圈,14、多孔介质垫片,15、磁极,16、螺栓孔,17、排气孔,18、进气孔,19、气腔,20、通孔,21、磁极,22、磁极,23、磁极,24、磁极,25、磁极,26、磁极,27、磁极,28、密封槽,29、螺钉孔,30、卡盘槽。
具体实施方式
实施例
在图1、图2和图3所示的带有多孔介质垫片的磁气双悬浮径向轴承示意简图中,本发明定子6为空心圆柱壳体,如图4所示,内周面固定有均布的8个径向磁极15的一端,8个径向磁极的另一端为自由端,且每个自由端顶尺寸大于非端顶尺寸,在每个自由端顶设有凹槽。在每个磁极内各设一个径向通孔即进气孔18,该进气孔一端设在空心圆柱壳体外,每个进气孔外端与一个进气弯管接头3一端相连,进气孔另一端设在磁极凹槽底上,在每个凹槽开口上粘接有与其对应并将其覆盖的不导磁多孔介质垫片14,8个多孔介质垫片非固定一面均与同一空心导磁套12表面接触。空心导磁套内设有主轴1,如图9所示,在主轴上设两道径向凹槽即卡盘槽30,两卡盘槽内设轴向固定卡盘10,。所述每个磁极上各套接一个漆包线圈13,控制每个线圈的绕线方式,使磁极表面按照NSSNNSSN方式排列,每相邻2个磁极为一对,(21、22为一对,23、24为一对,25、26为一对,27、15为一对);每对磁极均以导磁套为磁通回路。定子壳体两端设将其端面覆盖的两个盘形圆环端盖5,如图5和图6所示,其上设有4个与壳体连接通孔对应的通孔,每个通孔内有一个穿过,该螺栓2还同时穿过两端盖和定子螺栓孔16,并由螺母7固定。端盖中心通孔呈阶梯形,其为密封槽28,其上设骨架密封圈11,在骨架密封圈外设与其对应的盘形圆环密封骨架端盖8,如图7和图8所示,该可将骨架密封圈覆盖的密封骨架端盖中心通孔与主轴对应,并通过其上的螺钉孔29内的六角螺钉9固定在端盖上。在定子壳体上设有与内腔连通的排气孔17,排气孔外端装有消音器4。
本发明工作过程大致如下:初始工作时,漆包线圈13通电,漆包线圈13不同的缠绕方式使得在磁极的表面依次产生NSSNNSSN的磁极分布,每相邻2个磁极为一对,(21、22为一对,23、24为一对,25、26为一对,27、15为一对);磁极21、磁极22、导磁套12为磁通回路,磁极23、磁极24、导磁套12为磁通回路,磁极25、磁极26、导磁套12为磁通回路,磁极27、磁极15、导磁套12为磁通回路。空气通过弯管接头3及定子6上的进气孔18进入磁极与多孔介质垫片14之间的气腔19,空气从气腔19流经多孔介质垫片14与导磁套12之间的间隙时,形成阻力,建立空气静压力。而后单向流经磁极15及漆包线圈13,从定子6上的排气孔17流出,带走热量冷却磁极与漆包线圈。当加载时,可改变进气孔18的进气压力及漆包线圈13的电流,以调节轴承的气压支承力及电磁支承力,对主轴1位置实现微调。
Claims (4)
1.一种带有多孔介质垫片的磁气双悬浮径向轴承,其特征在于:其定子为空心圆柱壳体,内周面固定有均布的8个径向磁极的一端,8个径向磁极的另一端为自由端,且每个自由端顶尺寸大于非端顶尺寸,在每个自由端顶设有凹槽,在每个磁极内各设一个径向通孔即进气孔,该进气孔一端设在空心圆柱壳体外,进气孔另一端设在磁极凹槽底上,在每个凹槽开口上设有与其对应并将其覆盖的不导磁多孔介质垫片,8个多孔介质垫片非固定一面均与同一空心导磁套表面接触,空心导磁套内设有主轴,所述每个磁极上各套接一个漆包线圈,控制每个线圈的绕线方式,使磁极表面按照NSSNNSSN方式排列,每相邻2个磁极为一对,每对磁极均以导磁套为磁通回路,定子壳体两端设将其端面覆盖的两个盘形圆环端盖,该中心通孔呈阶梯形,其上设与主轴对应的骨架密封圈,在骨架密封圈外设与其对应的盘形圆环密封骨架端盖,该可将骨架密封圈覆盖的密封骨架端盖中心通孔与主轴对应,并通过紧固件固定在端盖上,在定子壳体上设有与内腔连通的排气孔。
2.根据权利要求1所述的带有多孔介质垫片的磁气双悬浮径向轴承,其特征在于:磁极每个进气孔外端与进气弯管接头一端相连。
3.根据权利要求1所述的带有多孔介质垫片的磁气双悬浮径向轴承,其特征在于:最好在主轴上设两道径向凹槽即卡盘槽,两卡盘槽内设轴向固定卡盘,用于将导磁套进行轴向定位。
4.根据权利要求1所述的带有多孔介质垫片的磁气双悬浮径向轴承,其特征在于:排气孔外端装有消音器。
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US11473621B2 (en) * | 2018-06-11 | 2022-10-18 | Trane International Inc. | Porous gas bearing |
US11867230B2 (en) | 2018-06-11 | 2024-01-09 | Trane International Inc. | Porous gas bearing |
CN109139694A (zh) * | 2018-11-08 | 2019-01-04 | 华北理工大学 | 一种径向轴向一体化磁液双悬浮轴承 |
CN110848254A (zh) * | 2019-11-22 | 2020-02-28 | 北京理工大学 | 一种磁气复合式磁悬浮气足 |
CN111457010A (zh) * | 2020-03-24 | 2020-07-28 | 北京科技大学 | 一种磁气混合轴承 |
WO2023147793A3 (zh) * | 2023-05-29 | 2024-02-22 | 华北理工大学 | 一种磁液双悬浮轴承 |
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