CN215928141U

CN215928141U - Wind power pitch bearing with plastic-impregnated retainer

Info

Publication number: CN215928141U
Application number: CN202122485251.1U
Authority: CN
Inventors: 杨沛然; 关向可; 张磊磊; 张延娜; 尚晓晓
Original assignee: Luoyang New Energy Bearing Manufacturing Co ltd
Current assignee: Luoyang New Energy Bearing Manufacturing Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-03-01
Anticipated expiration: 2031-10-15

Abstract

The utility model belongs to the technical field of wind power bearings, and mainly relates to a wind power pitch bearing provided with a plastic-impregnated retainer, in particular to a wind power pitch bearing provided with a plastic-impregnated retainer; the wind power variable pitch bearing is provided with a bearing outer ring, a bearing inner ring and a retainer; the method is characterized in that: the retainer is provided with a metal framework; a wear-resistant plastic layer is attached to the surface of the metal framework; the thickness of the wear-resistant plastic layer is 0.3-0.45 mm, and the bonding strength of the wear-resistant plastic layer is greater than 10 MPa. According to the utility model, the uniform and compact plastic layer is adhered to the surface of the metal framework of the retainer, the friction force between the retainer and the rolling body and between the retainer and the bearing ring is reduced, the wear resistance of the retainer is improved, the wear degree of the retainer and the bearing ring is greatly reduced, and the service life of the wind power variable pitch bearing is effectively prolonged.

Description

Wind power pitch bearing with plastic-impregnated retainer

Technical Field

The utility model belongs to the technical field of wind power bearings, and mainly relates to a wind power pitch bearing provided with a plastic-impregnated retainer.

Background

With the development of the wind power industry in recent years, the capacity of a wind generating set is continuously increased, and the requirement on the service life of a wind power bearing is correspondingly improved. In the prior art, the wear resistance of the bearing retainer is a main consideration index of the service life of the bearing in the normal operation process of the wind power pitch bearing. The surface treatment modes of the wind power variable pitch bearing retainer in the current market mainly comprise nitriding, phosphating, sand blasting and the like, but the nitriding and phosphating can not only cause the environmental protection problem, but also have great defects in the two processes, and if the retainer is subjected to phosphating and sand blasting, the treated retainer is easy to be worn and broken due to low material hardness; if the retainer is nitrided (hardened), the portion of the bearing ring in contact with the retainer is the most susceptible to wear and, as the retainer hardness increases, it becomes brittle and reduces product toughness.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem, the utility model aims to provide a wind power pitch bearing provided with a plastic-impregnated retainer.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a wind power variable pitch bearing provided with a plastic-impregnated retainer; the wind power variable pitch bearing is provided with a bearing outer ring, a bearing inner ring and a retainer; the retainer is provided with a metal framework; a wear-resistant plastic layer is attached to the surface of the metal framework; the thickness of the wear-resistant plastic layer is 0.3-0.45 mm, and the bonding strength of the wear-resistant plastic layer is greater than 10 MPa.

According to the wind power pitch bearing provided by the utility model, the wear-resistant plastic layer is adhered to the surface of the metal framework of the retainer, so that the friction force between the retainer and the rolling body and between the retainer and the bearing ring is reduced, the wear resistance of the retainer is improved, the wear degree of the retainer and the bearing ring is greatly reduced, and the service life of the wind power pitch bearing is effectively prolonged.

Drawings

FIG. 1 is a cross-sectional view of a wind power pitch bearing.

Fig. 2 and 3 are cross-sectional views of a wind power pitch bearing retainer.

In the figure: 1. bearing outer ring, 2, bearing inner ring, 3, keeper, 4, rolling element, 5, metal skeleton, 6, wear-resisting plastic layer.

Detailed Description

The utility model is described with reference to the accompanying drawings and specific examples:

as shown in fig. 1, and referring to fig. 2 and 3, the wind power pitch bearing provided with the plastic-impregnated retainer comprises a bearing outer ring 1 and a bearing inner ring 2; a retainer 3 is assembled in a gap between the bearing outer ring 1 and the bearing inner ring 2; the rolling bodies 4 are assembled in the raceways of the bearing outer ring 1 and the bearing inner ring 2; the rolling bodies 4 are equidistantly spaced by the retainer 3, so that the adjacent rolling bodies 4 are prevented from being in direct contact with each other, and the rolling bodies 4 are guided and driven to roll in the correct raceways. The retainer is provided with a metal framework; a wear-resistant plastic layer is attached to the surface of the metal framework; the thickness of the wear-resistant plastic layer is 0.3-0.45 mm, and the bonding strength of the wear-resistant plastic layer is greater than 10 MPa; through the plastic layer that adheres to evenly compactly at the holder metal framework surface, reduced the frictional force between holder and rolling element and the bearing ring, improved the wearability of holder, greatly slowed down the degree of wear of holder and bearing ring, effectively promoted the life of wind-powered electricity generation change oar bearing.

Claims

1. A wind power variable pitch bearing provided with a plastic-impregnated retainer; the wind power variable pitch bearing is provided with a bearing outer ring, a bearing inner ring and a retainer; the method is characterized in that: the retainer is provided with a metal framework; a wear-resistant plastic layer is attached to the surface of the metal framework; the thickness of the wear-resistant plastic layer is 0.3-0.45 mm, and the bonding strength of the wear-resistant plastic layer is greater than 10 MPa.