CN104736864B - 由复合材料制成且在高动态负载下操作的自润滑铰接组件 - Google Patents

由复合材料制成且在高动态负载下操作的自润滑铰接组件 Download PDF

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CN104736864B
CN104736864B CN201380054511.5A CN201380054511A CN104736864B CN 104736864 B CN104736864 B CN 104736864B CN 201380054511 A CN201380054511 A CN 201380054511A CN 104736864 B CN104736864 B CN 104736864B
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lubricating
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CN104736864A (zh
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伊曼纽尔·马斯
奥利维尔·布兰德内特
菲利普·毛林-佩里耶
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Hydromecanique et Frottement SAS
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    • F16C33/203—Multilayer structures, e.g. sleeves comprising a plastic lining

Abstract

本组件包括组装在笼(2)中的球(1)，所述球(1)容纳能够滑动和/或旋转的轴(3)。此球由具有范围在20μm和150μm之间的厚度且与包含填充剂的树脂混合的薄织物的缠绕形成，所述织物呈现出具有范围在5mm和200mm之间的宽度的条的形式，所述条在多个层中交叉。

Description

由复合材料制成且在高动态负载下操作的自润滑铰接组件
本发明涉及自润滑接头、尤其是用于在允许直线导引或旋转导引的球形接头或轴承中的轴的组件的自润滑接头的技术领域。
本发明有利地应用于所有类型的需要无润滑油操作(即，使用自润滑操作)以及在动态的高负载下操作的接头。
本发明目的在于获得由聚合物制成的自润滑接头，所述自润滑接头横跨其整体厚度为均匀的，而无增强基底，且在动态的高负载(例如，大于60MPa)下操作。
根据技术现状，由于此类型的复合聚合物接头在机械负载下的不良表现以及在动态负载下(包括低于60MPa的负载)流动和剥离的风险，此类型的复合聚合物接头不是完全令人满意的。例如，由复合聚合物制成或具有复合摩擦涂层的笼(cage)以及铬或不锈钢球体形成的自润滑球形接头是已知的。然而，卡住问题(seizing problem)出现在球体和轴之间。完全由聚合物制成但对大于40MPa的动态负载不具有抗性的球形接头也是已知的。
本发明目的在于以简单、可靠、有效且合理的方式克服这些缺点。
本发明旨在解决的问题是使球形接头的两处接触—即一方面是球体和笼之间的接触且另一方面是球体和轴之间的接触—自润滑，其目的是为了获得易于拆卸的球体/轴接触，所考虑的接头适合于大于40MPa的强接触压力。
根据本发明，球形接头由具有范围在20μm和150μm之间以及优选地在20μm和130μm之间的小厚度且与包含填充剂的树脂混合的织物的缠绕形成，所述织物呈现出具有范围在5mm和200mm之间的宽度的条的形式，根据纤维缠绕技术，所述条在多个层中交叉。
这类特征通过使用较薄的条而提供较好的均匀性，并且由于形成材料的织物的层的交叉而提供对切向摩擦应力的较好的抗性。
这还导致归因于条的交叉的较好的动态负载表现和归因于材料的较好均匀性的较好的静态负载表现。
有利地，交叉角范围在10°和90°之间，并且优选地在30°和86°之间。
根据其他特征，树脂是环氧型、乙烯基酯型、聚酯型、酚醛型、聚酰亚胺型或其他类型，而填充剂是PTFE型、MoS2型或石墨型。
应注意的是，填充剂占体积的5％和70％之间。
根据另一特征，环的膛及其外周具有自润滑涂层。
下文借助于附图进一步详细讨论本发明，其中：
图1是接头组件的纵向横截面图，所述接头组件由在自润滑笼中接合的自润滑球体或球形接头形成，并且所述自润滑球体或球形接头根据本发明的特征通过交叉沉积的织物制成，以获得较好的均匀性。
图2是在轴已经被安装在球形接头膛中之后对应于图1的视图。
如指示的，图1示出了接合在笼2中的自润滑球形接头或接头球体1。球形接头1的膛1a意图容纳能够在其中可旋转地滑动的轴3。
球形接头的膛及其外周涂覆有自润滑材料4。期望的目的是避免任何卡住效应(seizing effect)。
根据本发明，自润滑球形接头1由具有范围在20μm和150μm之间以及有利地在20μm和130μm之间的小厚度的合成织物的缠绕制成。
呈现出条的形式的织物与环氧树脂、乙烯基酯树脂、聚酯树脂、酚醛树脂、聚酰亚胺树脂或其他类型的树脂混合。
此树脂包括具有约从5％至70％体积的PTFE、MoS2、石墨或其他类型的填充剂。
目的是获得横跨其整体厚度均匀的产物。
织物条具有范围在5mm和200mm之间的宽度，并且根据纤维缠绕技术缠绕在确定直径的心轴上。
条以数层缠绕和交叉，交叉角范围在10°和90°之间，并且有利地在30°和86°之间。例如，与根据技术现状以300μm的3层片的形式缠绕相对照，该缠绕呈现出以100μm的9层片的形式。
应注意的是，意图与树脂混合的织物可以由塔夫绸(taffeta)、缎、斜纹布或布制成，而不排除其他纤维织品。
根据本发明的特征以及根据技术现状(轴承E1和轴承E2)，应参考在接头呈自润滑复合球形接头形式的情况下的以下测试。
实验设计
轴的性质：16NC 6CT Ra:0.4
轴承性质：
轴承的类型：球形接头
运动：交替旋转超过90°
突出区域中计算的压力：40MPa
滑动速度：6mm/s
停止测试的标准
摩擦系数>0.25
磨损>0.5mm
达到的循环次数：365,000次循环
测试结果
■根据本发明的轴承：-交叉缠绕
-织物条的宽度：30mm，
厚度0.10mm
-磨损＝0.35mm
-F<0.1
-循环次数：365,000次循环
■轴承E1：-以90°缠绕
-织物条的宽度：1,200mm，
厚度0.30mm
-磨损＝0.5mm
-F<0.2
-循环次数：2,500次循环
■轴承E2：-以90°缠绕
-织物条的宽度：1,200mm，
厚度0.30mm
-磨损>0.5mm
-F<0.25
-循环次数：3,000次循环
优点从说明书很好地显示出来，并且以下应被特别强调和提醒：
-归因于织物的交叉的较好的动态负载表现，
-归因于材料的较好均匀性的较好静态负载表现，
-球形接头和轴之间卡住的不可能性。

Claims (8)

1.一种自润滑接头组件，所述自润滑接头组件在动态的高负载下操作并且包括组装在笼(2)中的球形接头(1)，所述球形接头(1)容纳能够在其中滑动和/或旋转的轴(3)，其特征在于所述球形接头由具有范围在20μm和150μm之间的小厚度且与包含填充剂的树脂混合的织物的缠绕形成，所述织物呈现出具有范围在5mm和200mm之间的宽度的条的形式，所述条通过纤维缠绕在多个层中交叉，交叉角范围在10°和90°之间。
2.如权利要求1所述的自润滑接头组件，其特征在于所述织物厚度范围在20μm和130μm之间。
3.如权利要求1所述的自润滑接头组件，其特征在于所述交叉角范围在30°和86°之间。
4.如权利要求1所述的自润滑接头组件，其特征在于所述织物是合成型。
5.如权利要求1所述的自润滑接头组件，其特征在于所述树脂是环氧型、乙烯基酯型、聚酯型、酚醛型或聚酰亚胺型。
6.如权利要求1所述的自润滑接头组件，其特征在于所述填充剂是PTFE型、MoS2型或石墨型。
7.如权利要求6所述的自润滑接头组件，其特征在于所述填充剂占体积的5％和70％之间。
8.如权利要求1至7中任一项所述的自润滑接头组件，其特征在于所述球形接头的膛及其外周具有自润滑涂层。
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