公开(公告)号：US20170002869A1

公开(公告)日：2017-01-05

申请号：US15172977

申请日：2016-06-03

Applicant: ROLLS-ROYCE plc

Inventor： Wen Yao LEE ,  Anthony H. SIMPSON ,  Pranav AGGARWAL ,  David P. SCOTHERN ,  Andrew SWIFT

IPC: F16D3/06 ,  F02C7/36 ,  F16C3/02

CPC classification number: F16D3/06 ,  F02C7/36 ,  F05D2260/40311 ,  F16C3/02 ,  F16D1/10 ,  F16D9/00 ,  F16D2001/103

Abstract: A drive shaft assembly comprising a first shaft and a second shaft is disclosed. The second shaft is axially translatable from an engaged configuration with the first shaft at one limit of its travel to a disengaged configuration from the first shaft at the opposite limit of its travel. Engagement of the first and second shafts is via cooperating helical splines provided thereon. The helical splines give rise to a disengaging axial force on the second shaft in a fault condition in which a driving torque is applied from one of the first and second shafts to the helical splines in a rotational direction tending to unscrew the helical splines. Consequently when the second shaft is in the engaged configuration the disengaging axial force translates the second shaft to the disengaged configuration.

Abstract translation: 公开了一种包括第一轴和第二轴的传动轴组件。 第二轴可以从接合构型轴向平移，其中第一轴在其行进的一个极限处以与其行进的相反极限处的第一轴分离的构型。 第一和第二轴的接合是通过配合在其上的螺旋花键。 螺旋花键在故障状态下产生在第二轴上的分离轴向力，其中驱动扭矩从第一和第二轴之一施加到沿着倾斜螺旋花键的旋转方向的螺旋花键。 因此，当第二轴处于接合构型时，分离轴向力将第二轴平移到分离构型。