CN113958602A - 具有防尘罩保持器的悬架推力轴承装置 - Google Patents

具有防尘罩保持器的悬架推力轴承装置 Download PDF

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CN113958602A
CN113958602A CN202110804438.5A CN202110804438A CN113958602A CN 113958602 A CN113958602 A CN 113958602A CN 202110804438 A CN202110804438 A CN 202110804438A CN 113958602 A CN113958602 A CN 113958602A
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lower support
bearing
axial
shock
hook
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布鲁诺·蒙博夫
乔丹·雷诺登
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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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
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    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
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    • B60G15/063—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the mounting of the spring on the damper
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise
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    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
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    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
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    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/08—Elastic or yielding bearings or bearing supports, for exclusively rotary movement primarily for axial load, e.g. for vertically-arranged shafts
    • 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
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    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract

一种悬架推力轴承装置(10)，包含下支撑盖(16)、上承载盖(14)以及设置在两盖之间的至少一个轴承(18)。所述下支撑盖(16)包含有与所述轴承(18)接触的刚性主体(20)和限定承载面(40a)的柔性减震座(22)，所述承载面(40a)作用于悬架弹簧的上端。下支撑盖(16)的减震座(22)固定在所述主体(20)上，并且设置有至少在径向上延伸而且在轴向上相对于所述承载面(40a)偏向于轴承(18)相反一侧的至少一个保持钩(44)。

Description

具有防尘罩保持器的悬架推力轴承装置
技术领域
本发明涉及悬架推力轴承装置(suspension thrust bearing device)领域，尤其是用于机动车辆转向轮的悬架支柱(suspension strut)。
背景技术
悬架推力轴承装置通常设置有滚动轴承和上、下盖。所述滚动轴承包含上圈、下圈以及设置在上圈和下圈(以下统称“轴承圈”)之间的滚动体(例如，球或者滚子)。所述上、下盖形成滚动轴承轴承圈的壳体，并且提供轴承圈与毗邻部件之间的交界区域(interface)。
悬架推力轴承装置被设置在悬架支柱的顶部，介于车身与悬架弹簧之间。悬架弹簧被环绕装配在一端连接在车身上的阻尼活塞杆(damping piston rod)上。悬挂轴承在轴向上顶靠所述推力轴承装置的下盖。
悬架推力轴承装置允许轴向和径向力在悬架弹簧与车身之间传递，同时还允许由于车辆转向轮的偏转和/或悬架弹簧的压缩所导致的上盖与下盖之间的相对转动。
此外，为防止灰尘附着在阻尼活塞杆上，抑或附着在悬架推力轴承装置的滚动轴承上，活塞杆与悬架弹簧之间在径向上设置有防尘罩或者防尘护套(以下统称“防尘罩”)。所述防尘罩可以弹性变形，具有波纹管的形状。
在通常情况下，防尘罩被固定在悬架推力轴承装置的刚性下盖上。悬架弹簧的上端与所述下盖之间还可以额外设置有隔震垫(insulator)。更多的细节，例如，可以参考美国专利US 9,440,505。
这种悬架推力轴承装置的主要缺点是需要大量的操作才能装配在阻尼活塞杆上。
发明内容
本发明的一个目的在于克服上述缺点。
本发明涉及一种悬架推力轴承装置，包含下支撑盖(lower support cap)、上承载盖(upper bearing cap)以及设置在两盖之间的至少一个轴承。
所述下支撑盖包含与所述轴承接触的刚性主体和限定承载面(bearing surface)的柔性减震座(/弹性减震座/柔韧性减震座)(flexible vibration damping seat)，所述承载面作用于悬架弹簧的上端。
根据第一一般特征，所述减震座被固定在所述主体上。
根据第二一般特征，所述减震座上设置有至少在径向上延伸并且在轴向上相对于所述承载面偏向于所述轴承相反一侧的至少一个保持钩。
所述减震座被集成在刚性主体上，无需安装额外部件去抑制悬架弹簧的振动。除此以外，减震座的保持钩能够在轴向上保持防尘罩(dust boot)。
在优选情况下，下支撑盖的主体由硬质材料制成，减震座由柔性可变形材料(/弹性材料)(flexible material)制成。
在一种实施方式下，下支撑盖的减震座设置有接触(/贴靠)(contact against)所述主体并且限定出所述承载面的径向部和接触(/贴靠)(contact against)所述主体并且设置有所述保持钩的轴向部。
保持钩导致减震座的柔性易变形材料与主体的刚性材料之间更好的结合特征(bonding feature)。实际上，采用这种保持钩，所述轴向部的轴向长度得以被增加，导致所述主体与所述轴向部之间接触面的增大。
减震座的轴向部可以在径向上至少局部覆盖所述主体的轴向裙。
减震座的所述保持钩可以是减震座轴向部自由端的延续。
在一种实施方式下，下支撑盖的减震座的所述保持钩向外延伸。所述保持钩可以在径向上从减震座的轴向部向外延伸。
所述保持钩可以相对于轴向部的用于使悬架弹簧居中设置的对中部(centeringpart)的外表面齐平，抑或在径向上偏向于所述外表面的内侧。为此目的，减震座的轴向部可以设置有具有缩小径向厚度的部分，该部分设置有所述保持钩。作为另外一种选择或者组合特征，减震座的轴向部可以包含倾斜部，从该倾斜部中延伸出设置有所述保持钩的部分。
因此，朝向外侧的保持钩并不干涉(妨碍)悬架弹簧。
在另外一种实施方式下，所述保持钩可以向内延伸。在这种情况下，所述保持钩可以相对于下支撑盖主体的轴向裙的孔(/内孔)(bore)向内突出。所述保持钩可包含覆盖(recovering)下支撑盖主体的轴向裙自由端的径向跟。减震座与所述主体之间的结合(/连接)(bonding)由此得以被进一步加强。
在一种实施方式下，下支撑盖的减震座可通过包覆成型(/二次成型)(overmoulded)形成在主体上。
本发明还涉及一种支柱轴承单元(/支撑轴承单元)(strut bearing unit)，包含支撑杆(/杆)(rod)、围绕支撑杆安装的悬架弹簧、如之前限定的悬架推力轴承装置、以及围绕支撑杆安装的防尘罩。所述防尘罩是通过与下支撑盖的减震座的所述保持钩配合而在轴向上固定在悬架推力轴承装置上的。
附图说明
通过研究以非限制性实施例的形式给出并且在附图中加以说明的具体实施方式的详细描述，本发明及其优势可以得到更好的理解。在以下附图中：
图1是根据本发明第一实施例的悬架推力轴承装置的截面图；
图2是根据本发明第二实施例的悬架推力轴承装置的截面图；
图3和图4分别为根据本发明第三和第四实施例的悬架推力轴承装置的截面图。
具体实施方式
图1所示的悬架推力轴承装置10适于装配在悬架弹簧与能够适合于直接或者间接安置(resting)在机动车辆底盘一个部件上的顶保持座(top retainer seat)之间。
装置10具有轴线12，包含上承载盖(upper bearing cap)14、下支撑盖16以及在轴向上介于两盖14、16之间的滚动轴承18。在图示的实施例中，盖14、16被装配成直接接触滚动轴承18，与轴承18之间没有中间部件介入。作为另外一种选择，盖14、16也可以被装配成与滚动轴承18间接接触，即与轴承18之间有中间部件介入。
如将在后文描述的，下支撑盖16包含与滚动轴承18接触的刚性主体20和固定在主体20上的柔性隔震垫(flexible insulator)或减震座(vibration damping seat)22(以下统称“减震座”)。所述减震座22限定出用于悬架弹簧的承载面(bearing surface)，并且能够在轴向上保持防尘罩(未显示)。
上承载盖14可由诸如聚酰胺(尼龙)PA 6.6之类的硬质塑料(可以采用或不采用玻璃纤维加强)一体构成。在所公开的实施例中，上承载盖14的轴线24相对于装置10的轴线12倾斜。作为另外一种选择，轴线24也可以与轴线12同轴。
滚动轴承18包含与上承载盖14接触的上圈26、与下支承盖16接触的下圈28以及设置在在轴承圈上形成的滚道之间的一列滚动体30(此处为球)。在图示的实施例中，滚动轴承18属于倾斜接触的那种类型，用以同时吸收作用在所述装置上的径向力和轴向力。滚动轴承18还包含在上圈和下圈26、28之间的保持架(未显示)，用以维持滚动体30之间规则的圆周间隔(/周向间隔)。
滚动轴承的下圈28与下支撑盖主体20的上表面接触。
主体20可以是一体形成的。主体20由聚酰胺(尼龙)PA 6.6之类的硬质塑料(可以采用或者不采用加强玻璃纤维)制成。
下支撑盖16的主体20包含盘状的环形径向部32和延续径向部32小直径边缘的环形轴向裙(annular axial skirt)34。所述裙34在与上承载盖14和滚动轴承18相反一侧在轴向上延伸。滚动轴承的下圈28与径向部32的上表面接触。
在图示的实施例中，下支撑盖16还包含设置在径向部32上沿径向向内延伸的多个内钩36。所述钩36在上承载盖14所处的方向上从径向部32的内孔沿径向向内延伸。钩36优选以规则的方式在圆周方向上彼此间隔分布。作为另外一种选择，下支撑盖16也可以包含一个环形的内钩，即所述内钩在圆周方向上连续分布(/是连续的)。钩36在轴向上位于上承载盖14的钩的上方(未显示)，并且被设计成能够在承载盖14与支承盖16之间发生相对轴向移位时与上承载盖14的钩由于直径上的差异而产生干涉(/发生直径上的干涉)。
在图示的实施例中，下支撑盖16设置有嵌入主体20中的加强嵌入件38。所述加强嵌入件38可以由塑料材料或者金属制成。作为另外一种选择，下支撑盖16也可以不具有这样的加强嵌入件38。
如之前所述，下支撑盖的减震座22固定在主体20上。减震座22可以通过包覆成型(/二次成型)(overmoulded)形成在主体20上。作为另外一种选择，减震座22也可以通过任何其他适宜的方式(例如，胶合)结合在主体20上。减震座20，例如，可以由天然或合成橡胶、聚氨酯、热塑性弹性体(TPE)之类的柔性易变形材料(/柔韧材料/弹性材料)(flexiblematerial)制成。减震座22是一体形成的。
减震座22包含环形的径向部40和环形的轴向裙或轴向部42(以下统称“轴向部”)。径向部40在轴向上接触(/贴靠)在主体20的径向部32上。径向部40设置有用于悬架弹簧的下径向承载面40a。在图示的实施例中，承载面40a具有环形形状。承载面40a朝向轴向下方，即在轴向上位于与主体20的径向部32相反的一侧。径向部40还设置有上径向面40b，在轴向上与主体20的径向部32接触。径向面40a、40b限定径向部40的轴向厚度。
轴向部42径向接触(/贴靠)主体20的轴向裙34。轴向部42在径向上围绕轴向裙34。在图示的实施例中，减震座轴向部42的下方自由端与主体轴向裙34的下方自由端齐平。减震座的轴向部42延续其径向部40。轴向部42是径向部40小直径边缘的延续。轴向部42在轴向上在与上承载盖14和滚动轴承18相反的一侧延伸。在图示的实施例中，轴向部42的外表面具有单一均等的直径。
如之前所述，下支撑盖的减震座22能够在轴向上保持相关联的支柱轴承单元(strut bearing unit)的防尘罩。
为此目的，减震座22设置有在径向上向外延伸的环形突起或者钩44。减震座的轴向部42包含所述的钩44。钩44从轴向部42延伸。钩44从轴向部42的外表面延伸。钩44相对于轴向部42的外表面向外突出。在图示的实施例中，钩44在轴向上位于轴向部42的下端。作为另外一种选择，钩44也可以在轴向上偏离轴向部42的下端。
钩44设置有在轴向上朝向上方(即在轴向上朝向减振座径向部承载面40a)的上径向抵靠面44a。
钩44被设计成通过直径差异与防尘罩形成干涉(/与防尘罩形成直径干涉)。钩44与防尘罩的保持部(例如，环形的夹或者多个间隔开的夹)形成干涉。
减震座的钩44的外径可大于防尘罩保持部的内径，使得抵靠面44a在防尘罩与下支撑盖16之间在轴向上发生相对移位时能够通过直径差异与所述保持部形成干涉(/与所述保持部直径干涉)。
在图示的实施例中，悬架弹簧的内径显著(substantially)大于轴向部42的外径和钩44的外径。因此，减震座22的钩44与悬架弹簧之间并无干涉发生。
图2所示的实施例(图中同样的部件被赋予相同的附图标记)与第一实施例的区别仅在于减震座轴向部42的下端具有缩小的径向厚度。因此，轴向部42设置有第一部分42a和具有缩小外径的第二部分42b。第二部分42b在轴向上延续第一部分42a。第一部分42a在轴向上延续径向部40。
在该实施例中，钩44从减震座轴向部42的第二部分42b延伸。钩44从第二部分42b的外表面延伸。这里，钩44与第一部分42a的外表面齐平。作为另外一种选择，钩44也可以在径向上偏向于第一部分42a的外表面的内侧(/在径向上相对于第一部分42a的外表面偏向内)。
减震座轴向部42的第一部分42a允许悬架弹簧能够居中设置。这种居中设置是由第一部分42a的外表面实现的。在这种情况下，悬架弹簧的内径与减震座轴向部42的第一部分42a的外径大致(substantially)相等。
在前述两个图示的实施例中，无论是减震座的轴向部42，还是主体的轴向裙34，都纯粹沿轴向延伸。作为另外一种选择，轴向部42和轴向裙34也可以如图3所示实施例(图中同样的部件被赋予相同的幅度标记)那样，具有阶梯形状。
在该实施例中，减震座的轴向部42设置有延续径向部40的第一轴向部42c、倾斜向内延续第一轴向部43c的截头圆锥部42d、以及在轴向上在第一轴向部42c的相反侧延续截头圆锥部42d的第二轴向部42e。截头圆锥部42d在轴向上位于第一和第二轴向部42c、42e之间。这里，轴向部42的厚度是恒定的。
钩44从减震座轴向部42的第二轴向部42e延伸。钩44从第二轴向部42e的外表面延伸。这里，钩44在径向上偏向于第一轴向部42c的外表面的内侧。作为另外一种选择，钩44也可以与第一轴向部42c的外表面齐平。减震座轴向部42的第一轴向部42c允许悬架弹簧能够居中设置。
图4所示的实施例(图中同样的部件被赋予相同的幅度标记)与第一实施例之间的区别在于，减振座22设置有在径向上向内延伸的环形突起或者钩48。减震座的轴向部42包含钩48。钩48从轴向部42延伸。钩48相对于主体20的轴向裙34的内孔向内突出。在该实施例中，钩48接续轴向部42的下端向内延伸。
在该实施例中，钩48包含在径向上从轴向部42向内延伸的跟(/跟部)(heel)48a和从跟48a发出的(issued)向内倾斜延伸的环形肋48b。
跟48a在径向上向内延续减震座的轴向部42。跟48a在径向上从轴向部42的孔(/内孔)(bore)延伸。跟48a覆盖(recovers)主体20的轴向裙34的自由端。
环形肋48b从跟48a的内孔延伸。环形肋48b同时在径向上向内和在轴向上向上延伸。跟48a相对于主体20的轴向裙34的内孔向内突出。
钩48的肋48b设置有在轴向上朝向上方(即在轴向上朝向上承载盖14)的上抵靠面48c。
钩48被设计为通过直径差异与防尘罩形成干涉(/与防尘罩直径干涉)。钩48与防尘罩的保持部(例如，环形的夹或者多个间隔开的夹)形成干涉。
减震座的钩48可以具有小于防尘罩保持部外径的内径，使得在防尘罩与下支撑盖16之间发生轴向相对移位时使抵靠面48c能够通过直径差异与所述保持部形成干涉(/能够与所述保持部直径干涉)。
在这些图示的实施例中，下支承盖的减震座22上设置有环形钩44、48。作为另外一种选择，下支撑盖的减震座22也可以设置有(优选以规则的方式)在圆周方向上彼此间隔开的多个钩。
在这些描述的实施例中，减震座22的钩被提供(/设置)用来通过夹持(包括卡别、钩挂等)相关联的防尘罩来形成干涉。作为另外一种选择，减震座的钩也可以通过在径向上的摩擦接触与防尘罩形成配合，从而取代夹持。
在这些图示的实施例中，推力轴承装置包含仅设有一列球的角接触滚动轴承。所述推力轴承装置也可以包含其他类型的滚动轴承，例如具有四点接触和/或至少双列球的轴承。所述装置的滚动轴承可包含其他类型的滚动体，例如，滚子。在其他变型例中，装置的轴承也可以是设有两个轴承圈抑或仅设有一个轴承圈而不设有滚动体的滑动轴承。

Claims (10)

1.一种悬架推力轴承装置(10)，包括下支撑盖(16)、上承载盖(14)以及设置在两盖之间的至少一个轴承(18)，所述下支撑盖(16)包括与所述轴承(18)接触的刚性主体(20)和限定承载面(40a)的柔性减震座(22)，所述承载面(40a)作用于悬架弹簧的上端，其特征在于：所述下支撑盖(16)的减震座(22)固定于主体(20)，并且设置有至少在径向上延伸而且在轴向上相对于所述承载面(40a)偏向于轴承(18)相反一侧的至少一个保持钩(44、48)。
2.根据权利要求1所述的装置(10)，其特征在于：所述下支撑盖(16)的主体(20)由硬质材料制成，所述减震座(22)由柔性可变形材料制成。
3.根据权利要求1或2所述的装置(10)，其特征在于：所述下支撑盖(16)的减震座(22)设置有接触所述主体(20)并且限定所述承载面(40a)的径向部(40)和接触所述主体(20)并且设置有所述保持钩(44、48)的轴向部(42)。
4.根据权利要求3所述的装置(10)，其特征在于：所述下支撑盖(16)的减震座(22)的轴向部(42)在径向上至少局部覆盖所述主体(20)的轴向裙(34)。
5.根据权利要求3或者4的所述的装置(10)，其特征在于：下支撑盖(16)的减震座(22)的所述保持钩(44、48)是轴向部(42)自由端的延续。
6.根据权利要求3～5中任意一项所述的装置(10)，其特征在于：下支撑盖(16)的减震座(22)的所述保持钩(44)在径向上从轴向部(42)向外延伸，所述保持钩(44)相对于轴向部(42)的用于使悬架弹簧居中设置的对中部(42a、42c)的外表面齐平，抑或在径向上偏向于所述外表面的内侧。
7.根据权利要求1～5中任意一项所述的装置(10)，其特征在于：下支撑盖(16)的减震座(22)的所述保持钩(48)相对于下支撑盖主体(20)的轴向裙(34)的内孔向内突出。
8.根据权利要求7所述的装置(10)，其特征在于：下支撑盖(16)的减震座(22)的所述保持钩(48)包括覆盖下支撑盖主体(20)的轴向裙(34)自由端的径向跟(48a)。
9.根据前述权利要求中任意一项所述的装置(10)，其特征在于：下支撑盖(16)的减震座(22)是通过包覆成型形成在所述主体(20)上的。
10.一种支柱轴承单元，包含支撑杆、围绕支撑杆安装的悬架弹簧、根据前述权利要求中任意一项所述的悬架推力轴承装置(10)、以及围绕支撑杆安装的防尘罩，所述防尘罩是通过与下支撑盖(16)的减震座(22)的所述保持钩(44、48)配合而在轴向上固定于所述悬架推力轴承装置(10)。
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