Bearing assembly for wind driven generator

Abstract

The invention provides a bearing assembly for a wind driven generator, which comprises a rotating shaft connected with a generator rotor, a bearing seat connected with a generator base, and a front bearing part and a rear bearing part which are arranged between the rotating shaft and the bearing seat and are sliding bearings, the sliding bearing comprises a bearing body and a plurality of radial tiles, and the radial tiles are fixedly installed on the inner side of the bearing body and arranged in the circumferential direction of the rotating shaft at intervals; the inner side surface of the radial tile is a radial bearing surface for bearing the radial load of the rotating shaft, and the radial bearing surface is provided with a first wear-resistant insulating layer. The device has the advantages of good shaft current insulation effect, convenience in operation and maintenance and the like.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a bearing assembly for a wind power generator. Background technique [0002] In recent years, with the rapid development of offshore wind power generation technology, semi-direct drive generators have become one of the mainstream models of offshore wind power, and rolling bearing units are important supporting components of semi-direct drive generators. During the operation of the wind turbine, due to balance, air gap, load, friction, wiring and other reasons, it is easy to generate a potential difference near the rolling bearing unit, and it is easy to cause electric corrosion to the rolling bearing raceway and rolling body in the rolling bearing unit, which will cause damage to the rolling bearing, resulting in Problems such as abnormal noise and excessive vibration affect the service life of rolling bearings; and the rolling bearings used in wind turbines are large-sized b...

AI Technical Summary

Problems solved by technology

During the operation of the wind turbine, due to balance, air gap, load, friction, wiring and other reasons, it is easy to generate a potential difference near the rolling bearing unit, and it is easy to cause electric corrosion to the rolling bearing raceway and rolling body in the rolling bearing unit, which will cause damage to the rolling bearing, resulting in Problems such as abnormal noise and excessive vibration affect the service life of rolling bearings; and the rolling bearings used in wind turbines are large-sized bearings, which are difficult and costly to replace when damaged

Especially with the increasing power requirements of semi-direct drive generator sets, the problem of electrical corrosion and damage to rolling bearings caused by shaft currents will become more serious

However, large-sized rolling bearings for wind turbines are not only inconvenient to install shaft current insulation parts, but also the manufacturing of insulation parts is difficult and the installation cost is high.

Images