CN102369369A - 用于多挡动力变速箱的电磁惯性制动器 - Google Patents

用于多挡动力变速箱的电磁惯性制动器 Download PDF

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CN102369369A
CN102369369A CN2010800147326A CN201080014732A CN102369369A CN 102369369 A CN102369369 A CN 102369369A CN 2010800147326 A CN2010800147326 A CN 2010800147326A CN 201080014732 A CN201080014732 A CN 201080014732A CN 102369369 A CN102369369 A CN 102369369A
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brake
input shaft
chest portion
power input
stator
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CN102369369B (zh
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M·J·豪伯里克
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Eaton Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/28Brakes with only one rotating disc
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/36Brakes with a plurality of rotating discs all lying side by side
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/14Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F16D65/186Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with full-face force-applying member, e.g. annular
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/18Electric or magnetic
    • F16D2121/20Electric or magnetic using electromagnets
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/12Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
    • F16H2003/123Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches using a brake

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

一种用于车辆动力系中的车辆变速箱的电磁惯性制动器,其具有不可转动的电枢(30)和制动器反作用片(26),其中在制动器反作用片(26)的两侧均产生摩擦制动减速力,该制动器反作用片(26)被安装到变速箱转矩输入轴(18),从而在变速箱换挡过程中变速箱齿轮传动装置的旋转元件被制动,以改善换挡品质。

Description

用于多挡动力变速箱的电磁惯性制动器
技术领域
本发明涉及带有用于在换挡过程中克服惯性的离合器制动器的动力变速箱机构。
背景技术
用于公路车辆的典型动力系包括发动机、多挡动力变速箱以及用于建立和断开从发动机经变速箱的动力路径的主离合器。变速箱换挡在车辆驾驶员断开主离合器的换挡过程中完成。用于变速箱的扭矩输入轴必须在变速箱换挡期间内减速,从而即将到来的转矩传递路径上的齿轮传动元件的相对速度大致同步。完成换挡和改善换挡品质所需的时间取决于变速箱动力输入轴的减速速率。已知的设计实践是通过在换挡期间使用用于动力输入轴的惯性制动器来增加减速速率,从而改善换挡品质。
在美国专利US7000748中公开了带有电磁制动致动器的变速箱输入轴惯性制动器的一个例子。该专利被转让给本发明的受让人。制动器包括摩擦接合在变速箱箱体上的固定摩擦面的电枢,从而在换挡开始时对变速箱转矩输入轴的转动进行减速。
电磁惯性制动器的另一个例子公开在美国专利公开号2007/0095625中,该专利申请也被转让给本发明的受让人。该专利申请所公开的电枢毂被可驱动地连接到变速箱动力输入轴,例如通过花键或键槽连接。电枢片通过弹性传动片安装到电枢毂。当电磁线圈绕组被激励时,弹性传动片允许电枢摩擦接合变速箱箱体的摩擦面。该专利公开中的电磁制动器的制动能力由在电枢一侧上产生的摩擦转矩来决定。
发明内容
本发明的惯性制动器能够显著增加针对多挡变速箱的动力输入轴的制动能力。与美国专利公开号2007/0095625中的设计不同,本发明的惯性制动器的电枢不随变速箱的动力输入轴转动。相反,本发明的电枢被安装到变速箱箱体。规定允许电枢沿变速箱动力输入轴的方向轴向调整,但其被阻止相对变速箱箱体转动。电枢可在轴向方向上被偏压,这可使电枢与变速箱箱体分开。反作用片位于可移动但不可转动的电枢和变速箱箱体之间。而反作用片又被连接到反作用片毂。传动连接例如花键或键槽将毂连接到变速箱动力输入轴。反作用片的环形摩擦面摩擦接合变速箱箱体上的摩擦面,并且反作用片的另一摩擦面摩擦接合可移动但不可转动的电枢。双摩擦面特征改善了制动能力。
根据本发明的一个方案,不可转动的电枢与变速箱箱体间隔,并且反作用片布置在变速箱箱体和电枢之间的空间中。电磁线圈绕组在反作用片和变速箱箱体的界面处布置在箱体中。该线圈绕组产生磁通场,磁通场在电枢上产生离合器接合力。
在本发明的另一实施例中,箱体具有分隔开的主箱体部和副箱体部,不可转动的电枢和反作用片布置在这些箱体部之间。线圈绕组布置在副箱体部中。这利于制动器的修理和维修,无需完全拆卸制动器总成。
根据本发明的另一个特征,扭矩阻尼器布置在反作用片和动力输入轴之间,以削弱或减轻在施用惯性制动器时的扭矩扰动。
附图说明
图1是典型的重型主离合器、具有多挡齿轮传动装置的变速箱和用于接合和分离主离合器的离合器分离轴承的示意图。
图2是从图2a中的剖切线2-2所在平面看的本发明电磁制动器的横断面视图。
图2a是从图1示意所示的变速箱的左侧看的电磁制动器的轴向视图。
图3是从图3a的剖切线3-3所在平面看的包括阻尼弹簧的本发明电磁制动器的横断面视图。
图3a是从图1所示的变速箱的左侧看的本发明电磁制动器的轴向视图。
图4是本发明电磁制动器的横断面视图,其中电磁线圈相对于图3中的线圈位置重新定位。
图5是从图5a中的剖切线5-5所在平面看的本发明的另一实施例的横断面视图。
图5a是从图1所示的变速箱的左侧看的图5中的本发明另一实施例的轴向视图。
图6是本发明的又一个实施例,其中电枢反作用片与连接到变速箱箱体的多盘式离合器总成摩擦接合。
具体实施方式
图1示意示出包括发动机10、具有多挡齿轮传动装置14的多挡动力变速箱12和具有由驾驶员操纵的离合器分离轴承的主离合器16的车辆动力系。主离合器能通过车辆驾驶员分离和接合,以建立和断开从发动机10到变速箱动力输入轴18和变速箱齿轮传动装置14的机械动力路径。
变速箱具有动力输入轴18,其通过主离合器16用花键可驱动地连接到发动机曲轴。
变速箱主轴20将驱动转矩输送到变速箱动力输出轴,变速箱动力输出轴通过驱动轴和差速器-车桥总成可驱动地连接到牵引车轮。可参见美国专利公开号2007/0095625,以获得对可用在这种环境下的典型主离合器的说明。
图2是本发明惯性制动器的横断面视图。用22表示的变速箱箱体部具有接纳电磁螺线管制动器线圈24的线圈绕组的环形空间。环形反作用制动片26靠近环形摩擦制动面28设置在箱体部22上。电枢片30通过多个螺柱32安装到箱体部22,这些螺柱延伸穿过电枢片30中的加大开孔并穿过环形盖板33中的开孔。环绕螺栓32的套筒34用作在电枢片30和箱体部22之间的隔离件。隔离件被螺旋弹簧36围绕,螺旋弹簧在箱体部22和电枢片30之间产生校准分离力。电枢片30因此是不可转动的,但其可轴向移动。
反作用片26接合不可转动的电枢片上的环形摩擦面38。如图所示,反作用片26安装到内花键毂40,内花键毂被花键连接到带花键的变速箱输出轴,输出轴对应于图1所示现有技术结构中的轴18。反作用片26因此随着位于主离合器的转矩路径下游侧的变速箱动力输出轴一起转动。
当线圈24通电时,电枢片被拉向反作用片26。通过在反作用片26的每个环形面上的摩擦力矩产生在变速箱转矩输出轴上的减速力。这实际将使可在美国专利公开号2007/0095625和美国专利US700074所述类型的惯性制动设计中得到的反向转矩加倍。这将允许增大换挡过程中的输入轴减速速率,这缩短换挡时间。在本发明设计中不存在上述文献所示类型的离合器和电枢总成的回转质量的惯性作用。本发明惯性制动器的回转质量仅是转动的反作用片26的质量。此特征还有助于缩短执行换挡所需的时间。
当电线圈组件被励磁或通电时,产生惯性制动器减速力。这产生磁场,该磁场拉动不可转动的电枢与转动的电枢片摩擦接合并使电枢片与箱体部22的摩擦面摩擦接合。
图3公开一种改进设计,其中,箱体部42对应于图2中的箱体部22。不可转动的电枢44位于转动的反作用片46的一侧。反作用片46布置在电枢44的环形摩擦面和箱体部42上的环形摩擦面之间。转动的反作用片46摩擦接合电枢44和箱体部42的环形面。反作用片46通过阻尼弹簧50连接到反作用片毂48,这些弹簧相对于制动器总成的中心轴线沿切向配置地绕毂48轴线间隔设置。这建立了变速箱动力输入轴和反作用片46之间的弹性连接,这减小了在惯性制动器接合时的扭矩波动。
电枢44通过具有周面的支架52安装到箱体部42,该周面被固定到箱体部42的外周面。电枢44的周面例如通过互锁花键件可驱动且可滑动地连接到支架52的外周面。这种连接允许电枢44沿惯性制动器的轴线方向移动,尽管电枢片44的回转运动被阻止。当被励磁时,电线圈组件产生电磁场,该电磁场拉动电枢片44跨过气隙。
图4示出另一改进设计,其中,电磁制动器的电磁线圈具有不同的布置方式。图4中的箱体部54包括带有环形开口的环状件,该环形开口接纳电磁线圈24′。箱体部54通过支架60连接到箱体部58。不可转动的电枢62位于箱体部54和箱体部58之间。电枢62在外侧通过标记为64的键槽或花键与支架60连接,以允许电枢轴向运动,同时防止电枢62相对箱体部54和58转动。反作用片56布置在电枢62和箱体部54之间。在电枢反作用片56的任一个或两个环形摩擦面上可设有摩擦材料。
图4所示的总成能通过在图1所示的变速箱中看到的、用标记65表示的那种轴承支承壁或轴承盖支承的安装螺栓或螺柱安装到变速箱箱体。
图5和图5a示出图4所示的惯性制动器设计的变型。与图4中的惯性制动器不同,图5所示的箱体部54′具有多个电磁离合器线圈绕组。在图5中可以看到一对线圈绕组66和68,在图5a中可看到另一对线圈绕组70和72。也可使用不同数量的线圈绕组。像在图4所示设计中的情况那样,电磁线圈绕组产生电磁场,该电磁场将不可转动的电枢62′拉向箱体部54′。这在转动反作用片的摩擦面上产生摩擦力矩,这些摩擦面接合电枢62′和箱体部54′的摩擦面。
图5中的电磁制动器的多个元件的附图标记对应于图4中设计的相应元件的附图标记,尽管在图5中的附图标记加上了撇号。
图6示出本发明的另一个实施例。箱体部74具有支架76,其将箱体部74安装到环形箱体部78上。箱体部78具有圆形腔室或开口以接纳电磁制动器的线圈绕组80。环形电枢82通过连接机构如安装螺栓或螺柱77不可转动而可滑动地安装到箱体部78。环形电枢82接合多盘式离合器总成84,其包括多片连接到旋转反作用片85的外花键盘体86和多片用花键连接到箱体部78的内花键盘体88。当电磁线圈绕组通电时,通过螺柱77滑动连接到箱体部78的电枢82接合摩擦盘,从而使毂90减速,该毂通过花键或其它方式安装到变速箱动力输入轴。图6中的这种设计可以提供增大的制动能力,因为制动器总成84提供多个摩擦面。
尽管已经描述了本发明的实施例,但对本领域技术人员来说,显然可以在不超出本发明范围的情况下做出修改。所有这样的修改以及等同都应被后续的权利要求书所涵盖。

Claims (9)

1.一种电磁惯性制动器,用于在换挡过程中减缓在机动车辆的动力系中的多挡变速箱(12)的动力输入轴(18)的速度,该惯性制动器包括:
布置在该变速箱(12)的箱体(22)中的至少一个电磁制动器线圈(24),该制动器线圈(24)与该动力输入轴(18)径向隔开;
围绕该动力输入轴(18)的电磁制动器定子(30),该定子(30)通过连接器(32,26)安装到该箱体(22),该连接器允许该定子(30)轴向运动,而阻止该定子(30)相对该箱体(22)转动;和
可驱动地连接到该动力输入轴(8)的反作用片(26),该反作用片(26)布置在该电磁制动器定子(30)和该箱体(22)之间,由此当该制动器线圈(24)被通电时,该定子(30)在该反作用片(26)上施加离合器摩擦接合力,从而在变速箱换挡间隔期间在该动力输入轴(18)上产生旋转制动转矩。
2.根据权利要求1所述的电磁惯性制动器,其特征是,该反作用片(26)在其每一侧具有摩擦面(28,38),一侧摩擦接合该定子(30),另一侧摩擦接合该箱体(22)上的摩擦面,从而在该反作用片(26)的每一侧上产生作用于该动力输入轴(18)的旋转制动转矩。
3.根据权利要求1所述的电磁惯性制动器,其特征是,该反作用片(26)包括安装到该动力输入轴(18)的毂(40)和布置在该定子(30)和该箱体(22)之间的环形盘部,该毂(40)被可驱动地连接到该动力输入轴(18)。
4.根据权利要求3所述的电磁惯性制动器,其特征是,该反作用片(26)包括位于该反作用片毂(40)和该环形盘部之间的扭矩阻尼元件(50),从而在应用该惯性制动器时,该惯性制动器中的扭矩波动被削弱。
5.根据权利要求1所述的电磁惯性制动器,其特征是,该箱体(22)包括轴向隔开的第一和第二箱体部(54,58),该定子(30)布置在所述箱体部(54,58)之间并安装到所述箱体部(54,58);
在该定子(30)和第一箱体部(58)之间的连接机构(60),其允许该定子(30)轴向运动,而阻止该定子(30)绕该动力输入轴(18)转动;
当该制动器线圈(24)被通电时,随着该定子(30)和该第二箱体部(54)之间的气隙被打开,该反作用片(26)通过该定子(30)与该第一箱体部(58)摩擦接合。
6.根据权利要求5所述的电磁惯性制动器,其特征是,所述第一和第二箱体部(54,58)中的一个箱体部承载至少一个电磁制动器线圈(24)。
7.根据权利要求6所述的电磁惯性制动器,其特征是,所述一个箱体部(54,58)装有绕该动力输入轴(18)间隔开的多个制动器线圈(24)。
8.根据权利要求6所述的电磁惯性制动器,其特征是,所述至少一个电磁制动器线圈(24)和所述第一箱体部(58)适于与该第二箱体部(54)分开,由此所述电磁制动器线圈(24)可从该第二箱体部移走以便维修作业。
9.一种电磁惯性制动器,用于在换挡过程中减缓在机动车辆的动力系中的多挡变速箱的动力输入轴(18)的速度,该惯性制动器包括:
布置在变速箱(12)的第一箱体部(78)中的至少一个电磁制动器线圈(24),该至少一个制动器线圈(24)与该动力输入轴(18)径向隔开;
可驱动地连接到该动力输入轴(18)的反作用片(26),所述至少一个电磁制动器线圈(24)由该第一箱体部(78)承载,电枢(82)靠近该制动器线圈(24)、该反作用片(26)和承载制动盘总成(84)的多个制动盘(86,88)的第一箱体部(78);
该制动盘总成(84)具有盘表面,当所述至少一个制动器线圈(24)被通电时,由于该电枢(82)施加制动盘接合力到所述制动盘(86,88),该盘表面被施以摩擦力,从而在变速箱换挡过程中该动力输入轴(18)被制动。
CN201080014732.6A 2009-03-27 2010-03-26 用于多挡动力变速箱的电磁惯性制动器 Expired - Fee Related CN102369369B (zh)

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