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1. 发明公开

EP2964967A1 METHOD OF SETTING BEARING PRELOAD 审中-公开
标题翻译： PROCEDURE用于设定轴承预紧
公开(公告)号：EP2964967A1
公开(公告)日：2016-01-13
申请号：EP13707403.5
申请日：2013-03-06
申请人： Aktiebolaget SKF
发明人： VISSERS, Cornelius Petrus Antonius , GARRONE, Alessandro , FORNERO, Alessandro , KATSAROS, Padelis , MAZZITELLI, Isidoro Francesco
IPC分类号： F16C19/56 , F16C25/06
CPC分类号： F16C25/06 , B23P19/02 , B23P19/027 , B23P19/06 , B23P19/065 , B23P19/10 , B25B27/0035 , B25B27/06 , B25B27/064 , F16C19/364 , F16C19/548 , F16C19/56 , F16C2229/00 , F16C2361/61
摘要： A method of setting a desired axial preload FP in a bearing arrangement by selecting a shim that will generate the desired preload at a predetermined axial force FA applied by a clamping element, such as a locknut. The method comprises steps of: (a) mounting a reference shim, having a known thickness t, and preloading the bearing arrangement using the shim, by applying the predetermined axial force FA; (b) measuring the actual preload of the bearing arrangement Factual; and (c) constructing an analytical model that defines a correlation between bearing preload and applied axial force on the bearing arrangement, for a plurality of different shims, whereby each shim in the plurality of shims is defined in terms of an initial axial gap δ between the shim and an axially displaceable bearing ring of the bearing arrangement, and in terms of a certain clamping force at which the gap becomes zero.

2. 发明公开

EP2705269A1 PULLEY UNIT FOR BI-DIRECTIONAL TORQUE TRANSFER 审中-公开
标题翻译：轮单元为双向扭矩传递
公开(公告)号：EP2705269A1
公开(公告)日：2014-03-12
申请号：EP12719379.5
申请日：2012-05-07
申请人： Aktiebolaget SKF
发明人： GARRONE, Alessandro
IPC分类号： F16D27/10 , F16D41/08 , F16H55/36 , F16D41/069
CPC分类号： F16H55/36 , F16D27/00 , F16D41/073 , F16D41/084
摘要： The invention relates to a pulley unit for bi-directional torque-transfer, comprising a first cutch (30) and a second clutch (40) arranged between an inner member (10) and an outer member (20) of the pulley. The unit is configured such that when the outer member (20) is being driven, the first clutch (30) enables torque to be transferred from the outer member to the inner member. When the inner member (10) is being driven, torque is transferred from the inner member to the outer member via the second clutch (40). The second clutch is a sprag clutch comprising an inner cage (42) and an outer cage (43), each cage having a number of pockets for retaining a corresponding number of sprags (41). When the outer member is being driven, the sprags have a first orientation, in which the sprags are not in engagement with the inner and outer members. In a second orientation of the sprags, the sprags engage with the inner and outer members and enable torque transfer. According to the invention, one of the inner and outer cages is rotatable relative to the other of the inner and outer cages, whereby the relative rotation causes the sprags to move from the first orientation to the second orientation. The unit further comprises actuation means (60, 80) for engaging with the rotatable cage (42) and changing the orientation of the sprags.

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