公开(公告)号：US08186903B2

公开(公告)日：2012-05-29

申请号：US12292247

申请日：2008-11-14

申请人： Ian Makin ,  Michael C Roberts

发明人： Ian Makin ,  Michael C Roberts

IPC分类号： F04D29/44

CPC分类号： F01D5/026 ,  F01D5/025 ,  F05B2260/301 ,  F05D2230/60 ,  Y10T403/16 ,  Y10T403/1674 ,  Y10T403/7015 ,  Y10T403/7033 ,  Y10T403/75

摘要： The invention is related to a fastener assembly of the kind used to secure a gas turbine engine rotor disc assembly on a shaft in a situation which otherwise would required the use of a trapped nut. It thereby removes a design constraint limiting bore diameter of the disc assembly to permit access to a securing nut on the shaft, and avoids the use of a trapped nut. One of the rotors hubs is adapted to be mounted on the shaft and the securing nut is engaged with a thread on the shaft to trap the hub. In the improvement of the invention the hub is provided with an axial keyway through which the securing nut is passed into the limited access space. Once the shaft is engaged with the hub the nut is then engaged with the thread on the shaft and tightened using a special tool extending through the centre of the shaft. The tool is withdrawn after use. The nut may be undone and retrieved in an opposite operation.

摘要翻译： 本发明涉及一种用于将燃气涡轮发动机转子盘组件固定在轴上的类型的紧固件组件，否则将需要使用被截留的螺母。 因此，它可以消除限制盘组件的孔直径的设计约束，以允许进入轴上的固定螺母，并避免使用被截留的螺母。 一个转子毂适于安装在轴上，并且固定螺母与轴上的螺纹接合以捕获轮毂。 在本发明的改进中，毂设置有轴向键槽，固定螺母通过该键槽通过有限的进入空间。 一旦轴与轮毂接合，螺母然后与轴上的螺纹接合并使用延伸穿过轴的中心的专用工具紧固。 使用后取出工具。 螺母可能会被撤消，并以相反的操作取回。