Wind-turbine rotor-blade hoisting apparatus, method for attaching wind-turbine rotor blade, and method for constructing wind power generator

Abstract

The present invention provides a wind-turbine rotor-blade hoisting apparatus that enables attachment and removal of wind-turbine rotor blades without using a plurality of heavy machines and that enables attachment and removal of wind-turbine rotor blades on a site having a complex land shape with little flat land, a method for attaching a wind-turbine rotor blade, and a method for constructing a wind power generator. The present invention is characterized in that it includes a sheave () that guides a hoisting wire () from a rotor head (), to which a wind-turbine rotor blade () is to be attached, toward the wind-turbine rotor blade () and that is arranged so as to be movable in a direction along the rotation axis of the rotor head (); a retaining portion () that retains an attaching end of the wind-turbine rotor blade () such that a line connecting the center of gravity of the wind-turbine rotor blade () and a connecting portion, to which the hoisting wire () is connected, crosses the longitudinal axis of the wind-turbine rotor blade (); and a winch () that is disposed on the ground and that draws the hoisting wire () to wind up or let out the retaining portion ().