Main bearing, in particular main bearing of a wind turbine and method for determining a bearing clearance of a roller bearing and wind turbine

摘要

the grou00dflager (1), in particular a windmill main, has a rotor (2) and a stator (4), the at least one roller bearings (12) to each other is stored. according to a bearing clearance of the wu00e4lzlagers (10,12) are two components (2,4,12a, 12b) to each other versetzbar. the lagerspiel both for montagezwecke as during the operation or stopto be able to monitor is now an integrated sensoreinheit (14, 15) formed, in which at least one sensor (14) includes, in one of the components (2,4,12a, 12b) for measuring a distance (a) between the two components (2,4,12a, 12b) is arranged. the sensoreinheit (14, 15) for the determination of the bearing clearance is still based on the measured distance (a) is formed.preferably includes sensoreinheit (14, 15), an evaluation unit (15), from the measured time intervals (a), a lagervorspannung a negative lagerspiel.