Method for hoisting and lowering device in rotor head of...

Details Method for hoisting and lowering device in rotor head of... Method for hoisting and lowering device in rotor head of...

F - Mech Eng,Light,Heat,Weapons

03

D

F03D 11/00 (2006.01) B66C 23/18 (2006.01) B66D 3/26 (2006.01)

Patent

CA 2699288

There is provided a method for hoisting and lowering a device in a rotor head of a wind turbine generator 1, that can easily perform a device hoisting and lowering operation in the rotor head 4 without an external crane. The method for hoisting and lowering a device in a rotor head includes a step of mounting a temporary winch rail 50 to a rail support portion 44 previously provided in the rotor head 4, a step of installing a temporary winch 51 on the temporary winch rail 50, a step of opening a maintenance hatch provided in the rotor head 4, and a step of hoisting and lowering a replacement device P to be attached or removed in the rotor head 4 through a hoisting and lowering opening 43 in the maintenance hatch by the temporary winch 51.

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