A repair device is provided for a wind turbine having a bearing with damaged teeth driven by a motor. The repair device includes a carrier for connection to the bearing and radially aligned with the damaged teeth. A gear train is mounted on the carrier for creating a torque transfer path from the motor to non-damaged teeth of the bearing.

A method of replacing at least one tooth of a gear includes providing a tool jig including a mounting block with a plurality of indexing jig features. The tool jig also includes a tool-supporting feature in laterally movable contact with a jig rail feature. With at least one indexing jig feature, relative motion of the tool jig relative to the gear is resisted. A material-removal tool is operated, while attached to the tool-supporting feature in the tooth-removal position, to remove at least a portion of a working circumference of the gear including a native gear tooth to be replaced. Motion of the material-removal tool is guided to generate a circumferential gear cut including a relatively smooth first cut surface formed by removal of at least the native gear tooth to be replaced. The material-removal tool is removed from the tool-supporting feature. The tool jig is removed from the gear.

A system and method is disclosed for anchoring a computer numerical control (CNC) machine to a wind turbine blade. The method includes disposing one or more fasteners of the CNC machine at a surface of the wind turbine blade and implementing one or more tools of the CNC machine at a portion of the wind turbine blade. This method enables efficient and precise machining operations to be performed directly on the wind turbine blade, facilitating maintenance and repair tasks while minimizing downtime and reducing costs associated with blade removal and transportation. The anchoring of the CNC machine ensures stability and accuracy during the machining process, resulting in improved blade performance and extended operational lifespan of the wind turbine.

The invention relates to a support structure for maintenance crew for performing maintenance activities on a blade of a wind turbine. The support structure comprises two complementary sheltered workplaces, each workplace having a hinge end and a tail end. The support structure further comprises a hinge mechanism connected to the respective hinge ends of the sheltered work-places, allowing the sheltered workplaces to swivel between an open position wherein the tail ends are offset from each other, and a closed position wherein the tail ends are adjacent to each other. The sheltered workplaces also include a deformable receiving structure for sealingly receiving a blade portion between the sheltered workplaces, in the closed position thereof.

A wind turbine blade maintenance platform (8) including a frame having a blade access area (20) structured and arranged to accommodate blade (6) of a wind turbine, a tower end (18), and a front end (19), and sealing means (21) structured and arranged to contact the blade (6) is described. Such a platform should allow working at the blade (6) even at rainy weather. To this end the sealing means (21) includes a drain path (25), wherein the drain path (25) opens into the blade access area (20).

In a first aspect of the present invention there is provided a method of repowering a horizontal-axis wind turbine comprising a tower, a nacelle located rotatably at the apex of the tower, and a rotor having a hub and at least three used blades mounted pitchably to the hub and extending radially therefrom, the method comprising the steps of uninstall the at least three used blades from the hub, install at least three repower blades to the hub, each repower blade extending between a root and a tip, and each repower blade further comprising a connection point located between the root and the tip, install a plurality of blade connecting members, each blade connecting member being connected between corresponding connection points of a pair of repower blades; and install a tensioning system with the hub, the tensioning system being configured to adjust a tension in each blade connecting member.

A drive track (38) for a vehicle includes a frame (80), a drive pulley (86) rotatably coupled to the frame (80) and coupled to a drive (92), an idler pulley (88) rotatably coupled to the frame (80), and a track wheel (96) disposed about the frame (80). The track wheel (96) includes a continuous belt (98) and a plurality of link assemblies (100) coupled to the belt (98). Each link assembly (100) includes a plurality of alignment elements (102) configured to engage with a surface. The alignment elements (102) are configured such that rotation of the belt (98) defines a first movement direction of the vehicle, and are further configured to permit movement of the vehicle in a second movement direction perpendicular to the first movement direction under the weight of the vehicle. The vehicle may be a robotic device (34) for repairing a leading edge (26) of a wind turbine blade (20) and the drive track (38) allows the device (34) to remain aligned with the leading edge (26), such as a curved leading edge (26).

The present disclosure relates to the technical field of spraying devices, and in particular, to a spraying device for interior repair of a wind turbine blade. The spraying device for interior repair of a wind turbine blade includes: a base ring; extension arms arranged in pairs; rotation mechanisms including drive members arranged at end portions of the extension arms, and wheel that are in transmission connection to the drive members; probing mechanisms arranged on the extension arms; and spraying mechanisms arranged on the probing mechanisms; where the probing mechanisms are capable of extending in an axial direction of the base ring, and when the probing mechanisms extend, the spraying mechanism are driven to move two sides of the reinforcement plate, and then the spraying mechanisms can perform spraying on inner walls, on two sides of the reinforcement plate, of the blade body.

A method of replacing the root part from a wind turbine blade by attaching a new fabricated root part consisting of utilizing a new root part manufactured specifically for the blade to be repaired, which does not use the same materials as the original. To separate the original root segment from the original blade the cut line with single or double bevels is prepared, both in the new, pre-fabricated root assembly and in the region to be cut of the original blade. The next step is joining the new root assembly with the original blade using layers of structural fiber fabric, initially utilizing reconstruction layers and subsequently with internal and external reinforcement layers on the blade and, optionally, apply resin preferably through vacuum infusion and optionally through hand layup, to complete the joint between the new root and the original blade.

A method is for repairing a shear web of a wind turbine rotor blade, wherein the shear web includes a defect at the root end, the defect running essentially along a longitudinal direction of the wind turbine rotor blade. The method includes the steps of: providing a defect-bridging device having a first cover plate and a second cover plate, both the first cover plate and the second cover plate including an inner surface and an outer surface, and bonding the first cover plate with its inner surface onto a first surface region of the shear web and bonding the second cover plate with its inner surface onto a second surface region of the shear web, such that both cover plates at least partly cover the defect. A repair assembly is for repairing a shear web of a wind turbine rotor blade.