Repairing a gear part in a wind turbine
AssigneeVesta Wind Systems A/S
InventorsNicholas Brown, David Grossen
Life of this patent
Estimating the term…
Abstract
A method for repairing a gear part (1) in a wind turbine, in particular repairing damaged teeth of a toothed rim (2). A repair cavity (10) is formed by removing material, including one or more damaged teeth, from the gear part (1) by drilling one or more holes through the gear part (1) along a direction which is substantially parallel to an axis of circular symmetry of the gear part (1). A repair segment (15) comprising one or more replacement gear teeth (16), and having a geometry which matches a geometry of the repair cavity (10), is arranged in the repair cavity (10), and attached to the gear part (1) by introducing one or more fasteners (17) into fastener openings (11, 13, 14) formed in the gear part (1).
Claims18
A method for repairing a gear part in a wind turbine, the gear part comprising a toothed rim, and the gear part defining an axis of circular symmetry, the method comprising the steps of:
- removing material from the gear part, including one or more damaged teeth of the toothed rim, by drilling one or more holes through the gear part along a direction which is substantially parallel to the axis of circular symmetry, thereby forming a repair cavity in the gear part,
- providing at least one fastener opening in the gear part by drilling one or more holes and/or one or more recesses in the gear part along a direction which is substantially parallel to the axis of circular symmetry,
- providing a repair segment having a geometry which matches a geometry of the repair cavity, the repair segment comprising one or more replacement gear teeth,
- arranging the repair segment in the repair cavity, and
- attaching the repair segment to the gear part by introducing one or more fasteners into the fastener opening(s).
A repaired gear part for a wind turbine, the gear part defining an axis of circular symmetry, comprising:
- a toothed rim,
- a repair cavity formed in the gear part, said repair cavity defining at least one rounded contour formed by a drill bit, and
- a repair segment mounted in the repair cavity and attached to the gear part by means of one or more fasteners, the repair segment having a shape and a size which matches the at least one rounded contour of the repair cavity, and the repair segment comprising one or more replacement gear teeth,
- wherein one of the one or more fasteners is aligned along a direction which is substantially parallel to the axis of circular symmetry.
A jig for use in repairing a gear part in a wind turbine, the jig comprising:
- means for aligning the jig with gear teeth of a gear part to be repaired,
- at least one guiding aperture arranged for guiding a drill, and
- means for mounting the jig on a gear part to be repaired in a position where the guiding aperture(s) is/are arranged in a region comprising one or more damaged teeth of the gear part.
Dependencies are inferred from the claim text.