| 摘要 |
A main shaft fixture (10) is disclosed for fixing in place a main shaft (4) on a wind turbine during execution of installation and repair work on the heavy parts of the wind turbine arranged in the nacelle of wind turbines, where the fixture (10) is divided up into a number of sections for mounting on stable structural parts (2) that are found in a wind turbine's nacelle, including the nacelle's bottom frame (2). The main shaft fixture (10) comprises adjustable pressure mandrels (18) with tap shoes (20), which cause the fixture 10 to be usable regardless of the geometry of the main shaft (4) on a wind turbine, and such that it can be mounted without fixing the rotor (8). The main shaft fixture (10) also comprises facilities (40) for the mounting of a lightweight crane (12) and a self-hoisting crane (14) with a ground- based winch, respectively, as well as a rotor lock (24), which in combination with the actuators (36) belonging to main shaft fixture (10) between the main shaft fixture (10) and the bottom frame (2) makes it possible to displace the main shaft (4) and the main shaft bearing (38) vertically from its bearing in the nacelle sufficiently to service or replace the bearing. |
