A wind turbine nacelle configured for mounting on a wind turbine tower and housing a rotor-supporting assembly defining a rotation axis. The nacelle comprises a main unit arranged to be connected to a wind turbine tower and housing the rotor-supporting assembly. A crane is placed outside the main unit and connected directly to the main frame.

A wind turbine with a nacelle with a nacelle floor is thus provided. The wind turbine further has an aerodynamic rotor with at least two rotor blades. The wind turbine further has a tower, on which the nacelle is arranged. At least one first and second opening are provided in the nacelle floor. The first opening is used to transport first components of the wind turbine, and has corresponding first dimensions. The second opening has second dimensions, and is used to transport a transformer into the nacelle. The transformer has a floor that closes the second opening when the transformer has been conveyed through the second opening into the nacelle and mounted in the nacelle.

A wind turbine lifting arrangement includes a tower, a nacelle, a lifting platform and a lifting device attached to the lifting platform for lifting components to be installed in or deinstalled from the nacelle, the nacelle including a main frame attached to a top section of the tower, an attachment portion of the lifting platform being arranged underneath the nacelle and attached to the main frame. The lifting platform includes a lifting device portion provided adjacent to the attachment portion, the lifting device is attached to the lifting platform in the lifting device portion and the lifting device portion and the lifting device are arranged next to a longitudinal side of the nacelle which is one of two opposite longitudinal sides of the nacelle extending along a longitudinal axis of the nacelle and arranged between a top side and bottom side of the nacelle.

A mounting tool includes a base component and an attachment means. The base component includes a mounting portion defining an attachment location for receiving and securing a repair tool so as to maintain the repair tool at a desired repair location and a first receiving portion defining a first cavity for receiving a portion of a wind turbine so as to be externally secured to the wind turbine. The attachment means may be adjustably secured to the first receiving portion of the base component and securable to the portion of the wind turbine so as to secure the mounting tool to the wind turbine at the desirable repair location.

The present invention provides a large tidal current energy generating device and an assembly platform (1) thereof. At least one horizontal axis hydro-generator (2) is installed in the assembly platform (1). The assembly platform (1) includes at least four fixed piles (11), at least two force-bearing blocks (12), at least two force-bearing supports (13), and supports (14). The at least four fixed piles are connected through the supports to form an installation space (15). The at least one horizontal axis hydro-generator is installed inside the installation space. One end of each fixed pile is driven to be fixed to a seabed and the other end extends to be above a water surface. The at least four fixed piles are arranged in left and right columns relative to a water flow direction, and each column of the fixed piles is arranged along the water flow direction. The at least two force-bearing blocks are fixed to the corresponding fixed piles or supports and located on left and right sides of the horizontal axis hydro-generator below the water surface, respectively. Ends of the at least two force-bearing supports are respectively mounted on the left and right sides of the horizontal axis hydro-generator relative to the water flow direction and the other ends are respectively against the corresponding force-bearing blocks.

The present invention relates to vacuum cleaners with steam functionality (steam and vacuum cleaners), preferably to canister steam and vacuum cleaners, comprising a suction hose and a steam hose for respectively suctioning dirt and conveying steam, wherein the steam hose is external to the suction hose and comprises, at each end, a detachable connector, preferably a rapid-fitting detachable connector, for optionally detaching the steam hose when using only the vacuum cleaning functionality.

A nacelle for a wind turbine and a method for erecting a wind turbine are disclosed. The nacelle comprises a main unit arranged to be connected to a wind turbine tower, via a yawing arrangement, and at least one side unit mounted along a side of the main unit in such a manner that direct access is allowed between the main unit and the side unit(s), each side unit accommodating at least one wind turbine component, and at least one side unit being capable of carrying the wind turbine component(s) accommodated therein. The main unit and at least one of the side unit(s) are distributed side by side along a substantially horizontal direction which is substantially transverse to a rotational axis of a rotor of the wind turbine. A sufficient interior space of the nacelle is obtained while allowing the nacelle to be transported due to the modular construction. The weight of the wind turbine components is arranged close to the tower due to the transversal arrangement of the side unit(s) relative to the main unit.

A logistics system for a multirotor wind turbine (1) is disclosed. The multirotor wind turbine (1) comprises two or more energy generating units (4), each mounted on an arm (3) extending from a tower (2) of the multirotor wind turbine (1). A transport system (14, 30, 31, 32, 33, 34, 36) interconnects a lower interior part of the tower (2) with each of the energy generating units (4). A plurality of transport containers (15) is connectable to the transport system (14, 30, 31, 32, 33, 34, 36) and configured to hold equipment (26) to be transported. A control unit is configured to receive information regarding contents and position of the transport containers (15), and to plan transport of the transport containers (15) via the transport system (14, 30, 31, 32, 33, 34, 36), based on a service plan for the multirotor wind turbine (1).

Wind turbine comprising a hub carrying a plurality of blades, the hub being rotatably mounted on a frame, the frame extending forward into the hub, wherein the frame comprises a manhole arranged in an upper side of the portion of the frame extending forward into the hub and the frame being dimensioned such that an average-size adult human can move around through it at least up to the manhole.

An all-weather maintenance system for an offshore wind turbine maintenance program includes a maintenance capsule for transporting tools, parts and maintenance personnel to and from respective wind turbine towers, a maintenance vessel with a capsule support apparatus for transporting capsules supported on board by the capsule support apparatus to and from respective wind turbine towers, and a crane assembly with a trolley for transporting capsules between the respective wind turbine towers and the maintenance vessel.