A wind turbine (1) comprising a tower (2) and a nacelle (3) mounted on the tower (2) is disclosed. A movable container (39) is mounted on a lower part of the nacelle (3) or suspended below the nacelle (3), the movable container (39) housing a hoisting mechanism for hoisting and/or lowering the movable container (39) and for hoisting and/or lowering wind turbine components (9, 10, 11).

A multi-functional clamp for the installation of a wind turbine on an offshore substructure by a crane vessel equipped with a lifting crane, the multi-functional clamp having: a main body configured to selectively clamp and unclamp the lower part of the tower of a wind turbine and is shaped so as to couple with the crane vessel so as to define a given position for the tower with respect to the crane vessel; and a plurality of hooking members extending from the main body and configured to secure and release the free ends of a rigging assembly of the lifting crane to the main body so as to lift the multi-functional clamp by the lifting crane.

Provided is a method for installing or uninstalling a component of a wind turbine, which component is moved with a lifting device at which the component is fixed with cables, whereby two ropes are fixed to the component, with each rope running to a winch attached at a previously installed component of the wind turbine, with the ropes crossing each other and being moved around the winches for tensioning the rope while the component is lowered to its installation position or is lifted from its installation position.

Provided is a lifting assembly for lifting a load, including an upper part and a number of independent lower parts, wherein the upper part includes a lifting beam, a suspension arrangement for suspending the lifting beam from a crane hook, and a locking assembly including an actuator arrangement realized to engage the upper part to a lower part; and wherein a lower part includes a lifting tool realized for connection to a load, and a locking interface realized to engage with the locking assembly of the upper part. A method of lifting a load using such a lifting assembly is also provided.

Described herein is a coupling tool for connection to an outer end of a tubular element for the purpose of upending the element. The coupling tool has engaging means with which the outer end of the element can be engaged, and a pivotable lifting member with which the coupling tool can be suspended from a lifting means such as a crane. Resilient arms are further mounted on the coupling tool, which arms can be moved from a starting position to a position against a wall part of the outer end of the element for the purpose of aligning the suspended coupling tool relative to the outer end, and for damping movements of the suspended coupling tool. Also described herein is a device which comprises the coupling tool, and a method which makes use of the device.

Described herein is a device for upending a tubular element with a longitudinal direction from a support surface at an outer end. The device has a support beam which runs substantially parallel to the support surface and is connected to the support surface at a support point. The support beam guides a coupling tool to which a wall part of an outer end of the tubular element can be coupled. The coupling tool is displaceable relative to the support surface with the support beam, from a clear position to a coupled position in which the tubular element outer end is engaged by the coupling tool. Also described herein, in addition to the device, is a method which makes use of the device.

Described herein is a device for upending a tubular element with a longitudinal direction at an outer end. The device has a cross-shaped support structure of mutually coupled beams. The support structure is pivotable round a lifting member connected thereto for connection to a lifting means such as a crane. Clamping members slidable along the beams from a clear position to a clamping position can provide for coupling to a wall part of the outer end of the tubular element in the clamping position. In the clamping position the beams extend substantially transversely of the longitudinal direction of the tubular element. Also described herein is a method which makes use of the device.

A method for anchoring 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 sling is placed atop of at least one nut covering its edges, and the sling is fastened to the adapter is provided.

Provided is a lifting arrangement configured to facilitate alignment of a load with a wind turbine assembly. The lifting arrangement includes a crane arrangement for hoisting the load to the wind turbine assembly, a tagline arrangement for stabilizing the load during a lifting manoeuvre, a sensor arrangement configured to detect a motion of the wind turbine assembly relative to the load during the lifting manoeuvre, an actuator arrangement for adjusting the position of the load relative to the wind turbine assembly, and a control arrangement for controlling actuators of the actuator arrangement to reduce the detected relative motion. Also provided is a method of aligning a load with a wind turbine assembly.

Described is a tool and apparatus for positioning a blade for a wind turbine the wind turbine including a tower and a rotatable hub on the tower. The tool is mounted on a side of the tower so that the blade is supported on the tower in an initial configuration. The tool includes a first part arranged to be angularly movable relative to a second part for tilting the blade with respect to the tower to position the blade in a position that can allow the blade to be connected to the hub.