Abstract: A mounting adapter for mounting rotor blades of a wind turbine is provided. The mounting adapter has a first flange unit with a first flange surface, which is suitable for being fastened to a rotor blade connection of a wind turbine. The mounting adapter has a second flange unit with a second flange surface, which is suitable for having a rotor blade of the wind turbine fastened to it. The first and second flange units can be swiveled around a swivel axis relative to each other. An angle spanned by the first and second flange surfaces can be varied, so as to ensure at least a first and second operating position of the mounting adapter with different angles.

Abstract: An assembly crossbeam for placing on a tower top, in particular on a tower top of a tower of a wind turbine, and to a method for drawing in cables, in particular tendons, along a tower, in particular a tower of a wind turbine. The assembly crossbeam comprises a main support having a first and second end, and two auxiliary supports, each having a first and second end, wherein the two auxiliary supports are positioned on either side of the main support with each of their respective first ends at the centre of the main support, wherein on the main support there is a first trolley which can move along at least a first section of the main support, and wherein on said main support there is a second trolley which can move along at least a second section of the main support.

Abstract: A flange frame and to an assembly set for preassembling and/or for transporting and/or for assembling a tower segment for a wind turbine and/or a tower section of a wind turbine and/or a tower of a wind turbine, and also to methods. The flange frame comprises two flange sections for fastening the flange frame in a releasable manner on a horizontal flange of a tower segment, also comprises a lifting bolt for the engagement of a sling-like lifting unit, and further comprises a supporting element for supporting the flange frame on a standing surface.

Abstract: A flange frame and to an assembly set for preassembling and/or for transporting and/or for assembling a tower segment for a wind turbine and/or a tower section of a wind turbine and/or a tower of a wind turbine, and also to methods. The flange frame comprises two flange sections for fastening the flange frame in a releasable manner on a horizontal flange of a tower segment, also comprises a lifting bolt for the engagement of a sling-like lifting unit, and further comprises a supporting element for supporting the flange frame on a standing surface.