Patent application number | Description | Published |
20130136602 | Wind Turbine Rotor - Wind turbine rotor comprising a hub, a plurality of blades and at least one pitch system for rotating a blade substantially along its longitudinal axis, the pitch system comprising a motor, a drive pinion, a gear arranged to mesh with the drive pinion and a pitch bearing, the pitch bearing comprising an outer bearing ring connected to the hub, an inner bearing ring connected to a blade and, between these two bearing rings, one or more rows of rolling elements which allow both bearing rings to rotate relative to each other, wherein the inner bearing ring has an inner side, and wherein a reinforcement disc is radially fixed to the inner side of the inner bearing ring. | 05-30-2013 |
20130177423 | Wind Turbine Rotor With Pitch Brake - Wind turbine rotor comprising a hub, a plurality of blades, and at least one pitch system for rotating a blade substantially along its longitudinal axis and comprising one or more pitch brakes, wherein a pitch brake comprises at least a brake disc element and a first brake pad, and wherein one of the hub and a blade comprises said brake disc element and the other of the hub and blade comprises said first brake pad, the brake disc element and brake pad being arranged such that when the blade is substantially in or near the below rated so pitch position the brake disc element and pad are in frictional contact with each other. | 07-11-2013 |
20130243599 | Wind Turbine Rotor - The invention relates to a wind turbine rotor comprising a hub, a plurality of blades, and at least one pitch mechanism for rotating at least one of the blades, each pitch mechanism comprising a partial ring gear, a pitch bearing, a pinion that is arranged to mesh with the partial or complete ring gear and a pitch motor arranged for driving said pinion, wherein the pitch bearing is mounted between the hub and a blade, and the ring gear is mounted on the hub or on the blade. The invention further relates to a method of repairing a partial or complete ring gear in a wind turbine rotor, the ring gear comprising a plurality of segments, the method comprising detaching at least a segment of the ring gear and attaching the ring gear in a modified configuration. | 09-19-2013 |
20140003944 | PITCH SYSTEM FOR A WIND TURBINE ROTOR | 01-02-2014 |
20140127018 | WIND TURBINE ROTOR AND METHOD OF ASSEMBLY THEREOF - Wind turbine rotor comprising a hub, a plurality of blades, at least one pitch system for rotating a blade substantially along its longitudinal axis and at least one pitch retention system, wherein a pitch retention system comprises a cam profile and a cam follower, and one of the hub and a blade comprises said cam profile and the other of the hub and blade comprises said cam follower, and wherein the cam follower comprises a pushing member and a contact member, wherein the pushing member is arranged to push the contact member towards the cam profile, and the cam profile comprises a local depression, and wherein the cam follower and cam profile are arranged such that when the blade is in a pitch position at or below nominal wind speed, the contact member can be retained in said local depression. | 05-08-2014 |
20140193263 | LUBRICATION SYSTEMS FOR BEARING ASSEMBLIES - A lubrication system is disclosed for a bearing assembly, the bearing assembly having at least one bearing. The lubrication system may comprise a pump circuit, an injection circuit, an extraction circuit and at least one three-way valve. The pump circuit may comprise at least a pump. The injection circuit may provide lubricant to the bearing during an injection mode of operation. The extraction circuit may extract lubricant from the bearing during an extraction mode of operation. A flow combination topology of the first three-way valve may allow operation of the lubrication system in the injection mode or in the extraction mode or in both modes simultaneously. | 07-10-2014 |
20140286775 | PITCH DRIVE SYSTEM - Pitch drive system for a wind turbine comprising a motor, a drive pinion operationally connected with the motor and a gear arranged to mesh with the drive pinion, wherein a first plate is provided on one side of the drive pinion, the first plate comprising one or more channels adapted to provide a lubricant to a tooth of the drive pinion that is in meshing engagement with teeth of the gear. The disclosure further relates to a wind turbine rotor. | 09-25-2014 |
20140308131 | WIND TURBINE ROTOR - Wind turbine rotor comprising a hub, a plurality of blades and at least one pitch system for rotating a blade substantially along its longitudinal axis, the pitch system comprising a bearing, a motor and a gear system, said gear system comprising a driving pinion operationally connected with the motor, an annular gear arranged to mesh with the driving pinion, and additional gear teeth, the additional gear teeth being arranged to mesh with other parts of the gear system at least in a predefined blade position for wind speeds at or below nominal wind speed, and arranged such that upon movement from said predefined blade position, the additional gear teeth come into contact with said other parts of the gear system before the driving pinion comes into contact with the annular gear. | 10-16-2014 |
20140341740 | WIND TURBINE ROTOR - Wind turbine rotor comprising a hub, a plurality of blades and at least one pitch system for rotating a blade substantially along its longitudinal axis. The pitch system comprises a bearing, a gear and a pitch drive. The pitch drive is arranged on a flange and has a motor and a pinion which meshes with the gear. The flange is provided with a hole and an intermediate support is concentrically arranged with respect to the hole. The intermediate support comprises an off-center opening with respect to a central axis of the hole and the pitch drive is mounted through said off-center opening. The position of the off-center opening is such that the intermediate support can be arranged in a first and a second position in which the drive pinion meshes with a first and second section of the gear respectively. | 11-20-2014 |
20150016998 | WIND TURBINE ROTOR - Wind turbine rotor comprising a hub ( | 01-15-2015 |