公开(公告)号：US20170247945A1

公开(公告)日：2017-08-31

申请号：US15442040

申请日：2017-02-24

Applicant: General Electric Company

Inventor： Chengjie Wang ,  Mohan Muthu Kumar Sivanantham ,  Vidya Sagar Meesala

IPC: E06C9/02 ,  E04H12/08 ,  E02D27/42

CPC classification number: E06C9/02 ,  E02D27/42 ,  E02D27/425 ,  E04G3/246 ,  E04H12/08 ,  F03D1/0691 ,  F03D13/10 ,  F03D13/20 ,  F03D13/40 ,  F03D80/50 ,  Y02E10/721

Abstract: A rotor hub for a wind turbine may generally include a hub body defining both a plurality of blade flanges and a plurality of access ports spaced apart from the blade flanges. In addition, the rotor hub may include a ladder assembly extending within an interior of the hub body. The ladder assembly may include a plurality of platforms, with each platform defining a planar surface and being circumferentially aligned with a respective one of the plurality of access ports. The ladder assembly may also include a connecting frame extending between each pair of adjacent platforms so as to couple the adjacent platforms to one another. The connecting frame may extend lengthwise along a reference line defined between the adjacent platforms. The platforms may be positioned relative to one another such that the reference line extends at a non-perpendicular angle relative to the planar surfaces defined by the adjacent platforms.