A combination including a crane and a load guiding arrangement arranged for mounting to the crane for controlling the orientation of a load suspended in a crane boom from a bearing wire about the bearing wire is provided. The load guiding arrangement includes: —two winches placed on the crane, —two taglines connected with the winches and two attachment brackets attached in a top zone of the crane boom and being connected to the load for applying a controlled torque to the load about the bearing wire. The load guiding arrangement furthermore includes: —for each winch a winch frame, which is arranged for mounting directly on the crane next to or on the crane counterweight in positions at each side of the crane and —two tagline redirection devices, for example snatch blocks which are connected with the load.

A method of installing a rotor on a nacelle (44) on a wind turbine generally includes providing a rotor hub counterweight assembly (10, 10′) which are rotated and lifted from a downtower location to an uptower location at which wind turbine blades (50, 52, 54) are progressively attached and the counterweights (14, 16), (14′, 16′) are progressively removed. The rotor hub and counterweight assembly (10, 10′) for use when installing a rotor on a wind turbine (46) generally includes a rotor hub (12) having first, second and third flanges (18, 20, 22), a first counterweight (14, 14′), a second counterweight (16, 16′), and a lifting apparatus connecting member (26, 26′). A lifting apparatus connecting member (26) is configured with at least two connection points (60, 62) being configured for allowing at least two of three operations including installation, rotating and lifting the rotor hub (12), and removal of the lifting apparatus connecting member (26′).

Provided is a lifting tool for lifting a wind turbine blade by means of a crane for subsequent assembly with a wind turbine, the lifting tool having at least one attachment means for attachment to the crane and at least one holding device for holding the wind turbine blade, whereby the at least one holding device is connected to a controller of the lifting tool and the holding device includes at least one movable supporting element for supporting the wind turbine blade and at least one actuator connected to the at least one movable supporting element and controlled by the controller so that the movable supporting element is movable by means of the actuator. Further provided is a lifting arrangement, a wind turbine installation environment and a method for assembling a wind turbine blade with a hub of a wind turbine.

A lift system mountable in a nacelle of a wind turbine has a boom having a proximal end mountable in the nacelle and a distal end extending over a hub of a rotor of the wind turbine when the lift system is mounted in the nacelle. The lift system has a frame structure for mounting the proximal end of the boom in the nacelle, a winch mounted to the boom, a fastener situated below the boom and operatively connected to the winch by at least one cable, and a trolley movably mounted to the boom to permit translation of the trolley longitudinally along the boom thereby permitting longitudinal movement of the fastener with respect to the boom.

The present invention relates to a blade assembly method on a rotor hub of a wind turbine wherein the maximum torque supported by the gearbox is greater in one direction than in other (positive in the invention instead of negative) selecting an appropriate direction for rotating the hub and an appropriate side for connecting each blade.

Provided is an installation system for installing a tower of a wind turbine. The present invention further relates to a tower of a wind turbine including the installation system. The present invention further relates to a method of upending a tower of a wind turbine using the installation system. The present invention further relates to a method of installing a tower of a wind turbine using the installation system.

A method for mounting a blade root of a blade on a blade flange of a wind turbine rotor, the method comprising: attaching a control line between a hold structure at the blade flange and the blade root; lifting the blade with a blade lifting crane while the blade root is guided towards the blade flange by use of said control line, and connecting said blade root to said blade flange.

The crane is hoisted from the ground to the nacelle by operating a cable winch at ground whereby a cable extends from the crane to a roller at the nacelle and to the cable winch. A hoist block with the roller is arranged on a jib at a first hoist block position above a second hinge part of a crane base and extended in horizontal direction from the nacelle. When a first hinge part of the crane is positioned at a corresponding second hinge part of the crane base, the cable extends in a downward direction directly from the roller of the hoist block and through a central opening in a pedestal. After mutual connection of the first and second hinge parts, the hoist block is removed from its first hoist block position.

A method for handling a wind turbine component (20) is disclosed. The method includes providing a lifting system including a hoist cable (36) and an attachment assembly (38). The attachment assembly includes one or more removable ballast weights (48). The method includes positioning the attachment assembly near a working surface, removing at least some of the one or more ballast weights from the attachment assembly, and attaching a lifting tool (34) to the attachment assembly. The combined weight of the attachment assembly and the lifting tool is sufficiently greater than a threshold weight of the lifting system. The method further includes attaching a wind turbine component to the lifting tool and moving the wind turbine component using the lifting system. A lifting system is also disclosed. The lifting system includes a hoist cable, an attachment assembly, and a lifting tool. The combined weight of the attachment assembly and the lifting tool is sufficiently greater than a threshold weight of the lifting system.

A tagline control system for handling a wind turbine component during an operation on a wind turbine using a lifting apparatus. The tagline control system includes a tagline control module (74, 164) having a housing (80), at least two winches (126,128) disposed within the housing and each having a tagline cable (130, 132), a controller (146) disposed within the housing and operatively coupled to the at least two winches, and a power source (148) disposed within the housing (80) and operatively coupled to the at least two winches. A method of handling a wind turbine component during an operation on a wind turbine using the lifting apparatus includes coupling the tagline control module to the lifting apparatus and to a wind turbine component, and operating the tagline control system to effectuate the position of the wind turbine component.