CN1069457C - 弹簧寿命改进装置 - Google Patents

弹簧寿命改进装置 Download PDF

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Publication number
CN1069457C
CN1069457C CN97111125A CN97111125A CN1069457C CN 1069457 C CN1069457 C CN 1069457C CN 97111125 A CN97111125 A CN 97111125A CN 97111125 A CN97111125 A CN 97111125A CN 1069457 C CN1069457 C CN 1069457C
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China
Prior art keywords
spring
small distance
diameter part
reducing diameter
bearing
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Expired - Fee Related
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CN97111125A
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English (en)
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CN1177854A (zh
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M·L·哈尔西
S·J·霍尔登
S·L·莱西
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Carrier Corp
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Carrier Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Support Of The Bearing (AREA)

Abstract

一背环(150)具有一套上弹簧(30)的缩径部(150-1)，弹簧装在背环和挡圈(160)之间，以使挡圈与背环分开一小距离(170)，并同时安装背环而使轴承系统保持一所需偏置量。该小距离限制轴承(40)的运动，并同时限制弹簧的变形，故可改善弹簧的疲劳寿命。

Description

弹簧寿命改进装置
感应电动机转子两端系分别由两个圆锥滚柱轴承支承。典型的情况是一个轴承在壳体中处于固定位置，而该轴承的外滚道与轴承孔的底部直接接触。关键在于每个轴承的外滚道要与滚动件保持直接接触。必须对第二轴承进行轴向定位，以便使两个轴承保持这种直接接触。与壳体、轴和轴承相关的制造公差通过装在第二轴承后面的弹簧加以补偿。对轴承的预加载荷提供一作用在轴承和轴上的轴向力，使轴承保持所需接触。转子在起动瞬变过程中，象螺线管的衔铁或铁芯那样，受到一轴向磁性力。该瞬变的轴向磁性力的作用与弹簧对轴承的偏置作用相反，并暂时将转子从孔中推出，随后在正常运转时，电磁力才使转子对中。瞬变力使弹簧变形，在过度变形情况下进行大量循环，可引起弹簧损坏。
本发明的一个目的在于提高弹簧的疲劳寿命。
本发明的另一个目的在于提供一所需弹簧偏置量并同时限制弹簧运动。
本发明的又一个目的在于限制弹簧变形。这些目的和将在后面变得明显的其他目的通过本发明加以实现。
为实现以上目的，本发明的技术方案为：电动机具有安装在轴上并承受轴向瞬变运动的转子；轴有缩径部；缩径部具有装于孔中并承受轴向瞬变运动的圆锥轴承装置，该电动机中有一改进的限制弹簧变形的装置，其特征在于，包括：背环装置，位于该孔中，其一侧与该轴承装置接合而另一侧有一缩径部；挡圈装置，位于该孔中，一侧与该孔中形成的轴肩接合，而另一侧相对该背环装置的该缩径部并通常被隔开一小距离；弹簧装置，它与该背环装置的另一侧面和该挡片装置的另一侧面接合并套在该衬环装置的该缩径部，并将该衬环装置和该挡片装置偏置分开以保持小距离，这样在该轴受到轴向瞬变运动时，该运动被限制在该的小距离内。
与现有技术相比，本发明是用弹簧通过背环作用在轴承上并在提供所需偏置量时具有有限变形量的方式来代替弹簧直接作用在该轴承上并提供所需偏置量的方式，因此能大大提高用于在起动及受到相应瞬变力的过程中使转子支承轴承的外滚道与轴承件保持接触的弹簧的寿命。
本发明的另一个优点是大大减少用于在起动及受到相应瞬变力的过程中使转子支承轴承的外滚道与轴承件保持接触的弹簧的变形，从而提高弹簧寿命。
与现有技术相比，本发明的另一个优点是由于减少因瞬变力引起的弹簧变形，使用于在起动及受到相应瞬变力的过程中使转子支承轴承的外流道与轴承件保持接触的弹簧的寿命大大提高。
附图的简单说明：
图1为表示现有技术弹簧偏置结构的局部剖面图；
图2为表示本发明弹簧偏置结构的局部剖面图。
以下结合附图说明本发明的一较佳实施例。
图1中，标号10总括表示一电动机，该电动机例如用于驱动制冷压缩机并包括现有技术的弹簧偏置结构。转子12被用热压配合或其他适当方式装在轴14上并作为一个单元旋转。轴14具有一通过轴肩14-2与轴14其余部分分开的缩径部14-1。电动机20具有一以轴肩14-2为终点的孔20-1。弹簧30位于孔20-1中并与轴肩14-2接合，它最好由多圈波形弹簧组成。圆锥滚柱轴承40包括一内滚道40-1、一外滚道40-2和支承件40-3。内滚道40-1被用压配合或其他适当方式装在轴的缩径部14-1上。外滚道40-2被装在孔20-1中并通过弹簧30加以偏置，从而与轴肩14-2接触。
运转时，先对定子(未示)通电，使其起电磁线圈作用，使转子12及与其一体的轴14作为一铁心移到右面，如图1所示。转子12和轴14的移动使弹簧30压缩到限制该移动的全压缩高度。轴14和转子12在稳定运转状态时是对中的。这样，弹簧30在每个运转循环中都产生这种极端运动，结果导致弹簧疲劳。
如图2所示，电动机110与电动机10的不同在于：孔120-1比孔20-1更深，背环150位于轴承40与弹簧30之间，挡圈160位于孔120-1中，与轴肩120-2在偏置时相接。衬环150具有一通常穿过弹簧30的缩径部150-1，该弹簧30套在该缩径部150-1上并与轴肩150-2接合。所有其他结构均相同。通常在衬环150的缩径部150-1与挡片160之间用弹簧30隔开一0.02英寸左右的小间隙170。该小间隙170系通过确定弹簧30的变形距离加以选择，从而在装置的设计下弹簧应该有无限的名义循环寿命。间隙170是保持弹簧偏置的所必需的，但随着间隙距离的增大，循环寿命降低，故间隙距离最好保持在0.05英寸以下。运转时，弹簧30只在衬环150的缩径部150-1与挡片160之间的间隙170中变形，如图2所示，在启动时轴14和转子12向右运动被弹簧30顶住，转子12、轴14、轴承40和背环150与挡片160被弹簧30的偏置顶住后的合成运动，受到由于背环150和挡圈160相接而间隙170闭合的限制，这样大大限制弹簧30的变形并提高弹簧的疲劳寿命。轴14和转子12将在稳定状态下变为对中并重新建立间隙170。
由于本发明追求对弹簧30的变形进行限制，故应将相关零件设计并制造成使间隙170的尺寸控制在上述讨论范围内。

Claims (3)

1.电动机(110)具有安装在轴(14)上并承受轴向瞬变运动的转子(12)；轴(14)有缩径部(14-1)；缩径部具有装于孔(120-1)中并承受轴向瞬变运动的圆锥轴承装置(40)，该电动机中有一改进的限制弹簧变形的装置，其特征在于，包括：背环装置，位于所述孔中，其一侧与所述轴承装置接合而另一侧有一缩径部(150-1)；挡圈装置(160)，位于所述孔中，一侧与所述孔中形成的轴肩(120-2)接合，而另一侧相对所述背环装置的所述缩径部并通常被隔开一小距离(170)；弹簧装置(30)，它与所述背环装置的所述另一侧面和所述挡片装置的所述另一侧面接合并套在所述衬环装置的所述缩径部，并将所述衬环装置和所述挡片装置偏置分开以保持所述小距离，这样在所述轴受到轴向瞬变运动时，所述运动被限制在所述的小距离内。
2.如权利要求1所述的弹簧变形限制装置，其特征在于，所述小距离为0.02英寸。
3.如权利要求1所述的弹簧变形限制装置，其特征在于，所述小距离为0-0.05英寸之间。
CN97111125A 1996-05-06 1997-05-06 弹簧寿命改进装置 Expired - Fee Related CN1069457C (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/643,672 1996-05-06
US08/643,672 US5719454A (en) 1996-05-06 1996-05-06 Spring life improvement
US08/643672 1996-05-06

Publications (2)

Publication Number Publication Date
CN1177854A CN1177854A (zh) 1998-04-01
CN1069457C true CN1069457C (zh) 2001-08-08

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Country Link
US (1) US5719454A (zh)
EP (1) EP0806831A1 (zh)
JP (1) JP3133014B2 (zh)
KR (1) KR100272877B1 (zh)
CN (1) CN1069457C (zh)
BR (1) BR9703073A (zh)

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US6956310B1 (en) 2000-09-07 2005-10-18 Baker Hughes Incorporated Motor bearing for submersible motors
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JP4527145B2 (ja) * 2007-11-12 2010-08-18 三菱電機株式会社 電動パワーステアリング装置用モータ
US20120070110A1 (en) * 2010-09-21 2012-03-22 Owens Steven J Gearbox assembly component and method
DE102010047932A1 (de) * 2010-10-08 2012-04-12 Schaeffler Technologies Gmbh & Co. Kg Radlagereinheit
US8987957B2 (en) * 2013-01-16 2015-03-24 Baker Hughes Incorporated Systems and methods for facilitating oil flow in relation to rotor bearings
DE102013216504A1 (de) 2013-08-21 2015-02-26 Evonik Industries Ag Zinn-freie Katalysator-haltige Zusammensetzung für einen Monosil-Prozess mit optimierter Prozesscharakteristik
DE102013216502A1 (de) 2013-08-21 2015-02-26 Evonik Industries Ag Zinn-freie Zusammensetzung für die Vernetzung von thermoplastischen Polyolefinen
JP6385286B2 (ja) * 2015-01-13 2018-09-05 Ntn株式会社 軸受予圧機構及び軸支持装置
JP6607376B2 (ja) * 2015-07-01 2019-11-20 パナソニックＩｐマネジメント株式会社 冷凍サイクル装置
CN105356650A (zh) * 2015-11-29 2016-02-24 重庆元创汽车整线集成有限公司 电机主轴发热的间隙补偿结构
ES2904473T3 (es) * 2017-08-23 2022-04-05 Sulzer Management Ag Dispositivo de rodamiento de eje con dispositivo de elevación
DE102020105408A1 (de) 2020-02-28 2021-09-02 Nidec Motors & Actuators (Germany) Gmbh Getriebegehäuseeinheit mit Anschlag für axialen Spielausgleich
DE102020105409A1 (de) 2020-02-28 2021-09-02 Nidec Motors & Actuators (Germany) Gmbh Getriebegehäuseeinheit mit Polymerelement für axialen Spielausgleich
DE102020105412A1 (de) 2020-02-28 2021-09-02 Nidec Motors & Actuators (Germany) Gmbh Getriebegehäuseeinheit mit gewölbter Wellfederauflage für axialen Spielausgleich
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Also Published As

Publication number Publication date
JPH1042509A (ja) 1998-02-13
BR9703073A (pt) 1998-11-10
KR970077896A (ko) 1997-12-12
CN1177854A (zh) 1998-04-01
JP3133014B2 (ja) 2001-02-05
EP0806831A1 (en) 1997-11-12
KR100272877B1 (ko) 2000-11-15
US5719454A (en) 1998-02-17

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