scispace - formally typeset
Patent

Method and apparatus for turning a rotor blade bearing on wind turbines without using a mobile crane

Holling Jochen
TLDR
In this article, a method of servicing wind turbines having a hub containing a slewing ring bearing to which a rotor blade is fastened such that the pitch angle is adjustable is described.
Abstract: 
The invention relates to a method of servicing wind turbines having a hub containing a slewing ring bearing to which a rotor blade is fastened such that the pitch angle is adjustable. The rotor blade is brought into a position pointing vertically downward, lowered by means of threaded rods and hoisting means and attached suspendingly to the hub. The slewing ring bearing is then turned. The rotor blade is then hoisted again and fastened to the slewing ring bearing.

read more

Citations
More filters
Patent

Methods and systems for removing and/or installing wind turbine rotor blades

Brent Hamilton Holloway, +5 more
TL;DR: In this article, a method for removing a rotor blade from a wind turbine may generally include installing a blade sock around an outer perimeter of the rotor blade, coupling a support cable to the blade root, lowering the rotor blades relative to the hub using the support cable, coupling at least one pulley cable between the rotor rotor and a winch using at least 1 pulley, and applying a force through the blade sock as the pulley cables is moved relative to a pulley in order to control an orientation of rotor blade and further lowering rotor blade to a location on or adjacent to the
Patent

An apparatus for and method of mounting wind turbine blades on a wind turbine tower

Bitsch Michael Lundgaard, +1 more
TL;DR: In this article, the authors describe an apparatus for and a method of mounting wind turbine blades on a wind turbine tower. But they do not describe how to attach the blades to the tower.
Patent

Method and system for replacing a single wind turbine blade

Ulrich Werner Neumann, +5 more
TL;DR: In this paper, a method of replacing a wind turbine blade includes connecting a plurality of first-hoisting devices between a wind-turbine support hub and the wind turbine blades.
Patent

Unmanned aerial device and method for performing a lightning protection measurement at a wind turbine

Bruins Marcel, +1 more
TL;DR: In this article, an unmanned aerial device for performing a resistance, current and voltage measurement at an object, in particular a lightning protection measurement at a wind turbine, comprising a contact element with an electrically conductive contact area, which can be brought into contact with a surface of the object.
Patent

System and method for replacing a pitch bearing

Ulrich Werner Neumann, +7 more
TL;DR: In this article, the pitch bearing of a wind turbine is removed and a pulley cable is routed from a ground location over the first pulley block to the second pulley blocks.
References
More filters
Patent

Winch servicing of wind turbines

Mark H. Dawson, +1 more
TL;DR: In this article, a wind turbine with a nacelle, a base, and a plurality of blades operably connected around a turbine hub is described, where the wind turbine is configured to house a winch mechanism for servicing a portion of a blade.
Patent

Gear set, wind turbine incorporating such a gear set and method of servicing a wind turbine

Aaron John Mashue, +2 more
TL;DR: In this article, a wind turbine incorporating a ring gear set and a method of servicing the wind turbine is described. But the second hardness is no greater than the first hardness, and the second gear set is not discussed.