An offshore platform device comprising a platform and a docking device which has a vertically oriented longitudinal axis (L) and is designed to be raised along its longitudinal axis (L) relative to the platform (3) into a transport position and to be lowered into an operational position, the docking device (4) having at its lower end at least one docking point (8a, 8b, 8c, 8d) which is accessible from a boat (11) in the operational position.

A wind power installation with a rotor which has two or more rotor blades and which is rotatably bearing-supported for rotation around a rotor rotation axis. The rotor is connected to a generator for generating electrical power. The rotor and the generator form a part of a turbine which is received by a turbine carrier. The turbine carrier is rotatably arranged at a supporting structure. The turbine is movably mounted in the turbine carrier via a bearing device so that the spatial position of the turbine in the turbine carrier can be modified. A pivoting range of the turbine corresponding to a pivoting range of the rotor rotation axis includes a first angle range and a second angle range relative to a reference plane, and the entire pivoting range is at least 120.

The disclosure relates to hoisting accessories for wind turbines. The hoisting accessory is configured to be rotatably attached to the rotor hub and is further configured to assume a hoisting configuration and a passive configuration, wherein in the hoisting configuration, a wind turbine blade can be hoisted and mounted substantially vertically to the rotor hub, and wherein in the passive configuration, the rotor hub carrying one or more wind turbine blades can be rotated. The present disclosure also relates to kits including such hoisting accessories and methods of hoisting wind turbine blades.

A method for anchoring a holding means of a transport tool, in particular a sling of a rope for supporting loads, in a wind turbine, the wind turbine includes at least two components connected via a bolt-and-nut arrangement includes multiple pairs of bolts and nuts at opposing flanges, the nuts fastening to the bolts at the upper flange, wherein at least one adapter includes a cylindrical outer holding surface for receiving the holding means is placed atop of at least one nut covering its edges, and the holding means is fastened to the adapter is provided.

An assembly, installation package and method for installing a wind turbine tower. The assembly (139) comprises an installation unit (114) having unit guides (140), each configured to engage a corresponding engagement guide (130) adjacent to an upper inner edge of the tower section (110) to guide the assembly while it is lowered into the tower section. The assembly also includes a yoke (136) releasably connected to the installation unit and comprising yoke guides (146), each configured to engage a corresponding engagement guide (130) adjacent to the upper inner edge of the tower section to guide the assembly while it is lowered into the tower section (110). The assembly (139) is configured such that at least one of the unit guides (140) and/or the yoke guides (146) is or are substantially continuously engaged with the engagement guides (130) from when the assembly (139) enters the tower section (110) until the assembly reaches its installation position within the tower section.

A method for erecting and/or dismantling a tower, in particular a tower of a wind power installation, comprises providing a climbing crane, erecting the tower by hoisting and fastening tower segments and/or dismantling the tower by detaching and lowering tower segments, implementing, preferably temporary, securing measures for securing the tower in the state of assembly, in particular in the case of expected wind loads on the tower, which comprises taking into consideration the climbing crane, in particular its weight, in implementing the securing measures.

A nacelle-mounted multiple-appliance lift system has a first lifting appliance and a second lifting appliance mounted in a nacelle of a wind turbine. The first and second lifting appliances are each mounted on main bearing housing securements, gearbox pillow blocks, or both the main bearing housing securements and the gearbox pillow blocks. The first and second lifting appliances share one or both of the main bearing housing securements and the gearbox pillow blocks.

The present invention describes a floating yawing spar buoy current/tidal turbine. The spar includes a spreader above the rotor(s) with the spreader tips connected to fore and aft cable yokes that transition to opposing mooring lines connected to anchors on the seabed. The spreader comprises a yaw motor, which drives gears that engage with a ring gear fixed to the outer perimeter of the spar.

A method of assembling and/or disassembling a rotating electric machine of a wind turbine having a vertical structure; a main frame fitted to the top of the vertical structure; a blade assembly fitted to the main frame to rotate about a rotation axis; and a tubular rotating electric machine having a plurality of axial active segments; the method including inserting and/or extracting the active segments axially on the blade assembly side.

A rotor hub for a wind turbine, comprising a first device for lifting and/or transporting being arranged in a first interior of the rotor hub is provided. Further a wind turbine comprising the rotor hub is suggested. The rotor hub is applicable for all kinds of wind turbines.