Self-aligning interface

Abstract

A self-aligning interface for assembling a powertrain housingof a wind turbine onto a support baseis provided. The support basecomprises a support surfaceand the powertrain housingcomprises a housing surface. The support surfaceand the housing surfaceare configured to be in contact after assembly. The self-aligning interface comprises: one or more protrusionson the support surface, wherein the one or more protrusionscomprises one or more wallswhich are inclined with respect to the support surface; and one or more recesseson the housing surface. In addition or alternatively, the self-aligning interface comprises one or more protrusions on the housing surface, wherein the one or more protrusions comprises one or more walls which are inclined with respect to the housing surface, and one or more recesses on the support surface. The one or more protrusionsare complementary in size and shape to respective ones of the one or more recesses, such that, during assembly of the powertrain housingonto the support base, the one or more protrusionsact as a guide for the one or more recesses, and the one or more protrusionsfit directly into the respective one or more recesses, to enable direct contact between the support surfaceand the housing surface