How to Mount an e- winged times for wind power generation without a crane

摘要

Mobile cranes have been used to mount rotor blades on wind energy installations for a long time. Such cranes pick up the rotor blade at the foot of the wind energy installation and guide it up to the rotor blade connection of the hub of the wind energy installation, so that the rotor blade can be connected to the hub. Said connection is carried out mostly by screwing, in that screw bolts are countersunk in the connecting flange of the rotor blade and project into corresponding boreholes in the rotor blade connection of the hub, in such a way that nuts can be screwed onto the screw bolts. The invention relates to a method for mounting blades according to patent claim 1. Advantageous developments are described in the following claims. The inventive method is used to mount a rotor blade (12) of a wind energy installation (1) onto a rotor blade connection (9) on a hub (8) of a rotor (5) of the wind energy installation (1), or to dismount said rotor blade from the same, without using a crane. According to said method, at least one cable (14, 15) is fixed between a part in the hub region (8) of the wind energy installation and the bottom (13) of the wind energy installation (1), and the rotor blade (12) is moved upwards along the cable (14, 15) when mounted and downwards along the cable when dismounted.