A method for loading equipment and/or personnel onto a platform mounted on the nacelle tower of an offshore wind farm is provided. This method enables loading of equipment onto a platform mounted on the nacelle tower or on the monopile or tripod or jacket foundation of an offshore wind turbine without needing to mount the construction during the loading operation.

A method of erecting a wind power installation which has an aerodynamic rotor having rotor blade connections. A lifting beam having a ballast unit is fixed to a crane hook of a crane. A rotor blade is fixed to a second crane hook at an underside of the ballast unit by means of lifting cables. The lifting beam and the rotor blade are lifted by the crane for mounting the rotor blade at one of the rotor blade connections.

The present invention relates to a wind turbine assembly system which proposes an alternative to conventional cranes, having a main lifting structure configured to withstand the load of at least one tower section or at least one wind turbine component, and at least one secondary lifting structure configured to perform the lifting of the main lifting structure with respect to the wind turbine tower, in addition relating to a wind turbine assembly method according to the previous system, as well as the wind turbine assembled with the previous method.

A method and a lifting arrangement for mounting a blade on a wind turbine rotor carried by a wind turbine structure. The method comprises providing a control line guide at the wind turbine structure, the control line guide forming a control line point configured to restrain the control line attaching the control line to the control line point; lifting the blade with an external blade lifting crane while a root end of the blade is guided towards the rotor by use of said control line restrained at said control line point, and connecting said blade to said rotor.

A climbing device for carrying out a movement relative to a tower, to a part-ring segment for a tower, to a tower, to a wind power installation, and to a method for producing a tower. A climbing device for carrying out a movement relative to a tower, comprising a main body having a longitudinal extent from a first end to a second end, wherein the second end in an operating state faces a foundation of a tower; at least one first climbing element having an extent between a first inner end and a first holding end; at least one second climbing element having an extent between a second inner end and a second holding end; wherein the first climbing element is disposed and configured for carrying out a first holding movement of the first holding end relative to the main body, by way of a first holding movement direction that is orthogonal to the longitudinal extent, and/or for carrying out a first climbing movement of the first holding end relative to the main body.

The invention relates to a closed strap collar for securing cargo by means of friction, a device for lifting cargo and a lifting method, the collar being formed by a strap and a tensioner which, by tightening the strap around an element, allows cargo to be secured to the element being held or the held element to be raised by pulling the strap collar.

The present invention relates to a manufacturing process in situ of concrete towers for wind turbines which enables executing a design of concrete tower manufactured in situ by means of climbing formwork, which reduces the execution time of the concrete tower, where the invention also relates to the associated concrete tower for wind turbine.

An offshore wind turbine, having a supporting structure, having a nacelle, having a rotor, having an interior space, having at least one access opening, and having a means of ascent, such as a ladder, a staircase or the like, wherein the supporting structure has a tower and a foundation structure, wherein the tower supports the nacelle and the rotor, wherein the access opening is configured as an access for people to the interior space, wherein the means of ascent is arranged in the interior space, wherein the means of ascent is assigned to the access opening, and wherein no external work platform is arranged between the foundation structure and the access opening, as viewed along a vertical extent of the supporting structure.

A wind turbine (1) comprising a tower (2) and one or more nacelles (3) mounted on the tower (2) is disclosed, at least one of the nacelle(s) (3) housing one or more drive train components (9,10,11) and a transportation system for moving drive train components (9,10,11) of the wind turbine (1). The transportation system comprises one or more sliding rails (15) configured to carry a drive train component (9, 10,11) during movement, and one or more sledges (19). Each sledge (19) is movably connected to a sliding rail (15), and configured to be attached to a drive train component (9,10,11), thereby allowing the drive train component (9,10,11) to move along the sliding rail(s) (15). Each sliding rail (15) comprises two or more rail modules (6,13,14) being detachably connected to each other along a direction of movement defined by the sliding rail (15).

Crane of a wind turbine (200), comprising a fixed part (1), a pivoting part (2) which is attached with rotational freedom to the fixed part (1), a support (3) which is attached to the pivoting part (2), a winch (4), a wiring system between the winch (4) and the support (3), and a guide for guiding the wiring system along its path. The wiring system comprises a single wire (6), and the guide comprises a pulley (52) in the fixed part (1) for guiding it through said fixed part (1), and a pulley (53) in the pivoting part (2) for guiding it through said pivoting part (2). The wire (6) comprises a section (60) between the two pulleys (52, 53), which goes through the center of rotation of the pivoting part (2) with respect to the fixed part (1) connecting both parts (1, 2).