The wind harnessing device includes an axle, a number of radially outward extending first and second poles respectively arranged at equal intervals around a first end and a second end of the axle, a number of blade assemblies, and a rack to which the axle is rotatably mounted. Each first pole is aligned with and parallel to a second pole. Each blade assembly includes a first beam, a second beam, and a flat blade. The first and second beams are respectively attached to and along a first edge and an opposite second edge of the blade. The first beam's two ends are pin joined to the outer ends of a pair of corresponding first and second poles so that the blade is able to swing about the first beam. The wind harnessing device thus structured is of lower weight, reduced cost, and easy maintenance.

A wind turbine yaw assembly has a yaw piston and a yaw bearing pad. A spring resides inside the yaw piston and applies spring pressure to the yaw bearing pad. A threaded yaw piston bushing applies adjustable pressure to the spring. The threaded yaw bushing has a plurality of at least three force adjustment screws distributed symmetrically about the threaded yaw piston bushing. The spring pressure is adjusted by tightening or loosening the plurality of force adjustment screws. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

The disclosure relates to a main shaft of a wind turbine with mounting segments. The main shaft includes a shaft portion and a disc portion. The disc portion includes a coupling surface, a hollow portion, and an alignment portion. The alignment portion is characterized by one or more mounting segments coupled with the alignment portion. The mounting segments are configured to align a component of the wind turbine with the central axis of the main shaft. Further, the one or more mounting segments are coupled to the alignment portion using at least one fastening device. The mounting segments have a thickness t that may be constant or varied based on the component 32 of the wind turbine coupled to the main shaft.

A wind power generator includes two spaced apart support members, multiple wind-guiding blades interconnecting the support members, a rotating unit and a power generating unit connected to the rotating unit. The rotating unit includes two bases disposed on and micro-movable relative to the support members, a shaft unit, a rotating frame unit and multiple blades connected to the rotating frame unit. Each base includes a bearing unit including a substrate formed with a central bore and a bearing member disposed in the central bore, and a connecting unit including a connecting member extending through the bearing member. The shaft unit interconnects the connecting members. The rotating frame unit surrounds and is connected to the bases and the shaft unit.

Support structures of a wind turbine, including a bearing housing that supports bearings that allow a rotor shaft to rotate about a rotor axis. The bearing housing may be constructed to minimize forces in the bearings in response moments that act on the rotor shaft about axes other than the rotor axis. The support structures of the wind turbine may also include a base to which the bearing housing may be mounted. The base may include features that minimize stress within the wind turbine structure and/or a yaw mechanism of the wind turbine in response to moments that act within the wind turbine about axes other than the rotor axis.

Provided is a coupling assembly for connecting a tower or a transition piece of a wind turbine to a monopile including a first coupling part configured to be connected to the monopile and a second coupling part configured to be connected to the first coupling part. Further provided is a tower end of a tower of a wind turbine connected to a second coupling part of the coupling assembly. Finally, a method of driving a monopile of a wind turbine into the ground, a top end of the monopile being connected to a first coupling part of the coupling assembly is also provided.

Described is a device for placing a component of a wind turbine on a wind turbine tower. The device includes a hoisting means with a hoisting cable for taking up the component. A positioning tool is connected to the hoisting cable by means of an intermediately arranged intermediate construction which forms part of the positioning tool. A guide frame of the positioning tool is connected on one side to the intermediate construction and is provided on another side with engaging means for engaging a peripheral part of the wind turbine tower. The invention likewise relates to a method which makes use of the invented device.

A vertically-elongated member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. Another vertically-elongated member, such as a support post, includes one or more reinforcement members to help alleviate breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.

A vertically-elongated member, which is preferably a support post used in a molten metal pump, includes a ceramic tube and tensioning structures to add a compressive load to the tube along its longitudinal axis. This makes the tube less prone to breakage. Another vertically-elongated member, such as a support post, includes one or more reinforcement members to help alleviate breakage. A device, such as a pump, used in a molten metal bath includes one or more of such vertical members.

A drive arrangement for a wind turbine includes a main shaft, a housing, and a nacelle-mounted support structure. The main shaft of the drive arrangement for the wind turbine is completely supported in the housing. The housing of the drive arrangement for the wind turbine is at least partially resiliently mounted in the support structure.