Method for adjustment and measurement of pre-stress at taper roller bearing arrangement in main shaft for main bearing of rotor of wind-power plant, involves measuring attenuation of gears by sensor, during application of force on outer end

摘要

The method involves changing an axial spacing (A) between axial inner front ends (14, 15) of inner rings (11, 13) for adjusting an axial pre-stress by application of axial acting force (F) on an axial outer front end (16) of one of the inner rings (13). Pre-stress that acts on bearing arrangements (1) is measured, during change of the axial spacing. The pre-stress is determined by frequency analysis of the attenuation of the planetary gears (2), where attenuation of the planetary gears is measured by a vibration sensor (17), during application of force on the outer front end.