Patent ID: 9086051
Filing Date: 2015-07-21
Classification: B66C,F03D,F05B,Y02E

Abstract:
1. A maintenance system for wind turbine equipment including a nacelle having a gear box and a generator to generate electricity using wind power, a blade mechanically connected to the gear box, and a tower supporting the nacelle on an upper end thereof, the maintenance system, comprising: a trolley support unit provided at an upper position in the nacelle so as to be movable in a longitudinal direction of the nacelle; a trolley provided on the trolley support unit so as to be movable in a lateral direction of the nacelle; a pulley installed in the trolley so as to be rotatable, the pulley being contained within the nacelle; a winch unit disposed outside of the nacelle and connected to the pulley through a wire; a door provided in a lower end of the nacelle so that an element of the nacelle to be maintained or repaired is removed from or inserted into the nacelle through the door; and a jig provided in the nacelle so as to be below the trolley, and connected to the pulley from below the pulley, configured to be raised and lowered with respect to the trolley, and to hold the element to be maintained or repaired, wherein the pulley comprises a drive pulley connected to the winch unit and a driven pulley coupled to the jig so as to be raised and lowered with the jig, and wherein the drive pulley is connected to the driven pulley through a second wire.