CN203130786U

CN203130786U - Bearing

Info

Publication number: CN203130786U
Application number: CN 201320017512
Authority: CN
Inventors: 周凯; 关向可; 周小光; 张延娜; 周丹; 郭迎鸽
Original assignee: LUOYANG NEW ENERGY BEARING MANUFACTURING Co Ltd
Current assignee: LUOYANG NEW ENERGY BEARING MANUFACTURING Co Ltd
Priority date: 2013-01-14
Filing date: 2013-01-14
Publication date: 2013-08-14
Anticipated expiration: 2023-01-14

Abstract

The utility model belongs to the technical field of a bearing and provides a bearing. The bearing comprises a bearing outer ring (1), a bearing inner ring (3) and a steel ball (2) located between the bearing inner ring and the bearing outer ring, and is characterized in that a roller path of the bearing inner ring (3) and a roller path of the bearing outer ring (1) are of a double-roller-path structure and the distance between the two roller paths is 63mm; the size of the steel ball (2) is phi44.45mm; a contact angle of the bearing is 50 degrees; and the curvatures of the roller path of the bearing inner ring (3) and the roller path of the bearing outer ring (1) are 23.11mm and the offset of the roller paths is 0.678mm. According to the bearing disclosed by the utility model, the roller path of the bearing inner ring and the roller path of the bearing outer ring are of the double-roller-path structure, the steel ball with the special size, the curvatures, the offsets and the contact angle of the roller paths are adopted, so that the load-carrying property of the bearing can be greatly improved under the condition of not increasing the size of the shape of the bearing and the use requirements of a wind power variable pitch bearing are well met.

Description

Bearing

Technical field

The utility model belongs to technical field of bearings, is specifically related to a kind of bearing, is applicable to wind power system.

Background technique

Bearing is the supporting member in the mechanical transmission mechanism, is used for determining running shaft and other part relative movement position, and its quality and bearing capacity directly influence the service behaviour of mechanical complete machine, drives the motion of fan blade by the running of bearing.Bearing is guaranteeing that load-carrying properties meet under the situation of usage requirement, and the size that more needs to guarantee self adapts to the spatial structure that uses.Wind power system is when improving constantly generated output, and the space in cabin can not significantly promote, but the axle of pitch variable bearings, radially the carrying and tilting moment enlarge markedly, this has proposed higher standard to pitch variable bearings.

The model utility content

In order to overcome above-mentioned technical problem, the purpose of this utility model is to propose a kind of bearing.

To achieve these goals, the utility model adopts following technological scheme:

A kind of bearing, described bearing include bearing outer ring, bearing inner race and the steel ball between bearing inner race and bearing outer ring; The spacing that the raceway of described bearing inner race, the raceway of bearing outer ring are between two raceway structures and two raceways is 63mm; Described steel ball is of a size of φ 44.45mm, and the wrapping angle of described bearing is 50 °, and the curvature of the raceway of described bearing inner race, the raceway of bearing outer ring is 23.11mm, and the raceway offset is 0.678mm.

A kind of bearing that the utility model proposes, the raceway of bearing inner race, the raceway of bearing outer ring are two raceway structures, and the steel ball of employing specific dimensions and raceway curvature, offset, wrapping angle, under the situation that does not strengthen bearing boundary dimension, significantly promote the load-carrying properties of bearing, meet the usage requirement of wind electricity pitch variable bearings more.

Description of drawings

Fig. 1 is schematic cross-section of the present utility model.

Fig. 2 is the structural representation of raceway in the utility model.

Among the figure: 1, bearing outer ring, 2, steel ball, 3, bearing inner race.

Embodiment

With specific embodiment the utility model is illustrated by reference to the accompanying drawings :

As shown in Figure 1, a kind of bearing, described bearing include bearing outer ring 1, bearing inner race 3 and the steel ball 2 between bearing inner race 3 and bearing outer ring 1; In conjunction with Fig. 2, the spacing that the raceway of the raceway of described bearing inner race 3, bearing outer ring 1 is between two raceway structures and two raceways is 63mm; Described steel ball 2 is of a size of φ 44.45mm, and the wrapping angle of described bearing is 50 °, and the curvature of the raceway of the raceway of described bearing inner race 3, bearing outer ring 1 is 23.11mm, and the raceway offset is 0.678mm.

Claims

1. bearing, described bearing includes bearing outer ring (1), bearing inner race (3) and the steel ball between bearing inner race and bearing outer ring (2); It is characterized in that: the spacing that the raceway of the raceway of described bearing inner race (3), bearing outer ring (1) is between two raceway structures and two raceways is 63mm; Described steel ball (2) is of a size of φ 44.45mm, and the wrapping angle of described bearing is 50 °, and the curvature of the raceway of the raceway of described bearing inner race (3), bearing outer ring (1) is 23.11mm, and the raceway offset is 0.678mm.