Sliding type bearing for wind driven generator and maintenance method thereof

Abstract

The invention relates to a sliding type bearing for a wind driven generator. The sliding type bearing for the wind driven generator comprises an outer ring, an inner ring and one or more lubricating channels, the outer ring is configured to be connected or engaged with a hub or a main bearing seat of the wind driven generator, wherein the outer ring is provided with a first sliding surface; the inner ring is configured to be connected or engaged with a blade or a main shaft of the wind driven generator, wherein the inner ring has a second sliding surface associated with the first sliding surface, and the outer ring and the inner ring are constructed such that relative slide between the first sliding surface and the second sliding surface allows the blade or the main shaft to rotate aroundthe central axis of the inner ring or the outer ring; and the lubrication channels communicate the first sliding surface and / or the second sliding surface with the outside for adding lubricant fromoutside to the first sliding surface and / or the second sliding surface. According to the sliding type bearing, surface-type sliding friction contact between the blade and the hub and / or between the hub and the main shaft can be provided, so that the contact stress borne by the bearing in unit area is remarkably reduced, and the service life of the bearing is prolonged accordingly.

Description

technical field [0001] The present invention generally relates to the field of wind power generation, and specifically relates to a sliding bearing for a wind power generator. Furthermore, the invention also relates to a method of servicing such plain bearings. Background technique [0002] As a new type of energy, clean energy has the advantages of wide distribution, renewable, and less environmental pollution compared with traditional fossil fuels. In view of the above advantages, clean energy technology has shown a trend of rapid development in recent years. As a representative of clean energy, the application of wind power generators is increasing day by day. [0003] Two important mechanical components of a wind turbine are the pitch bearing and the main bearing. The pitch bearing is used to connect the blade with the hub and allow the pitch angle of the blade to be adjusted, while the main bearing is used to connect the main shaft of the hub with the main bearing ho...

AI Technical Summary

Problems solved by technology

However, the disadvantage of ball bearings or ball bearings is that since ball bearings are in point contact or line contact, the contact stress is large, so in the manufacturing process, high-quality steel must be used to ensure satisfactory bearing performance. life; moreover, ball bearings must have good sealing, otherwise intrusion of moisture or dirt will significantly affect bearing life

In addition, the two mechanical components, the pitch bearing and the main bearing, bear a large load during the operation of the fan, and the relative rotation will cause continuous wear, so the maintenance work of the pitch bearing and the main bearing may need to be carried out frequently

In the case of ball bearings or ball bearings, the entire hub or blade must be disassembled and lifted, which brings great difficulties and safety hazards to maintenance work

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