Rolling bearing, retainer segment, and main shaft support structure for wind-driven generator

Abstract

A rolling bearing (11) comprises a plurality of rollers, and retainer segments (15a) retaining the rollers and split along a split line extending in an axial direction. The retainer segment (15a) has a plurality of pillar parts (22a), (22b), (22c) and (22d) extending in the axial direction so as to form first pockets (23a) and (23c) and a second pocket (23b) for housing the rollers, and a connection part extending in a circumferential direction so as to connect the plurality of pillar parts (22a) to (22d). Here, outer diameter side stopper parts (24a), (24b), (24c) and (24d) are provided on the outer diameter side of the pillar parts (22a) to (22d) positioned on the circumferential both sides of the first pockets (23a) and (23c) to limit the movement of the roller housed in the first pockets (23a) and (23c) toward the outer diameter side, and inner diameter side roller stopper parts (25a) and (25b) are provided on the inner diameter side of the pillar parts (22b) and (22c) positioned on the circumferential both sides of the second pocket (23b) to limit the movement of the roller housed in the second pocket (23b) toward the inner diameter side. Thus the retainer segments (15a) function as a roller guide.

Description

technical field [0001] The invention relates to a rolling bearing, a retainer component and a main shaft support structure of a wind power generator. Background technique [0002] A rolling bearing generally consists of an outer ring, an inner ring, a plurality of rollers arranged between the inner ring and the outer ring, and a cage for holding the plurality of rollers. There are various types of cages for holding rollers, such as resin cages, punched cages, cut cages, welded cages, etc., depending on the material and manufacturing method, and are used separately according to the application or performance. The cage is usually of the one-piece type, that is to say composed of one ring-shaped part. [0003] Here, since the rolling bearings supporting the main shaft of the wind power generator on which the blades for receiving wind are mounted need to bear a large load, the rolling bearings themselves are also enlarged. This increases the size of each component such as the ...

AI Technical Summary

Problems solved by technology

[0009] In this way, the retainer member 101a is easy to move in the radial direction. If it becomes an inner ring guide member or an outer ring guide member depending on the position in the rolling bearing 111, the radial position of the retainer member 101a is unstable, and the outer ring 112 or the inner ring 113, there is a possibility of abnormal noise or damage to the retainer member 101a.

[0010] In addition, when the bearing rotates, the protruding portion 106a scrapes the oil film on the raceway surfaces 115 and 116, which may significantly reduce the lubricating performance of the rolling bearing 111.

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