Abstract: A segmented wind turbine rotor blade includes sleeve-shaped pressure pieces arranged between rotor blade segments, each of which is mounted on a connecting bolt. Each pressure piece includes one or more cylindrical sections and a tool engaging section for an assembly tool). Each pressure piece is connected to a corresponding connecting bolt in a form fit manner, so that a screwing force can be applied to the corresponding connecting bolt via the assembly tool via the pressure piece. A diameter of the cylindrical section(s) is less than a diameter of the tool engaging section. Each two adjacent pressure pieces are arranged rotated by 180° relative to one another.

Abstract: A wind turbine rotor blade having a first rotor blade segment with a first connection end and a second rotor blade segment with a second connection end assigned to the first end. The first segment has first mounting sleeves at the first end. The first mounting sleeves each have a first internal thread. The second rotor blade segment has second mounting sleeves at the second connection end. Each of the second sleeves define a longitudinal axis and has a second internal thread arranged therein. Each of the second internal threads is displaceable axially with respect to the corresponding longitudinal axes. The rotor blade further has a plurality of connecting bolts threadably engaging a pair of first and second sleeves via corresponding internal threads such that the first segment and the second segment are mechanically interconnected at the first end and the second end.

Abstract: The disclosure relates to a support structure of a wind turbine, in particular a main frame. An object is to develop an ideal load distribution and stiffness distribution of the main frame with a least possible use of material. The main frame is intended optimally to fulfill the requirements with respect to the operating and extreme loads and the stiffness for the given space conditions inside the nacelle. The main frame has a top, bottom, front and rear side, and includes a circumferential annular wall between the bottom and the top side. The main frame includes two lateral portions of the wall that extend between the front side and the rear side of the main frame. Additionally included are two lateral flanges on the top side of the main frame, a plurality of arms being arranged inside the wall. The arms are connected to the wall via a box profile.

Abstract: The disclosure relates to a support structure of a wind turbine, in particular a main frame. An object is to develop an ideal load distribution and stiffness distribution of the main frame with a least possible use of material. The main frame is intended optimally to fulfill the requirements with respect to the operating and extreme loads and the stiffness for the given space conditions inside the nacelle. The main frame has a top, bottom, front and rear side, and includes a circumferential annular wall between the bottom and the top side. The main frame includes two lateral portions of the wall that extend between the front side and the rear side of the main frame. Additionally included are two lateral flanges on the top side of the main frame, a plurality of arms being arranged inside the wall. The arms are connected to the wall via a box profile.