Compound planet gear arrangement and gear wheel arrangement

Abstract

The invention relates generally to compound planet gear arrangements for transmitting torque between two rotating shafts, by splitting the torque into several torque transmitting gear components. The gear arrangements may contain gear shifts arrangement and free-wheel arrangements. The invention also relates to gear wheel arrangements having enhanced torsional compliance capabilities, which gear wheel arrangements advantageously may be used in said compound planet gear arrangements and also at other applications such as at other over-determined systems or where intermittent loads and forces occur. According to one aspect, the invention relates to a gear wheel arrangement (), comprising; a first part () which is arranged to be rotationally fixed to a shaft; a second part () which is rotatably connected to the first part and provided with gear teeth for meshing with an adjacent gear. The first and second parts are mechanically connected by means of at least one first elastically deformable member () which allows a limited relative rotation between the first and second part. The gear teeth () of the second part () are helical and the gear wheel arrangement is arranged to allow a limited relative axial displacement between the first part and the second part.