CN103062214A - Bearing - Google Patents

Abstract

The invention belongs to the technical field of bearings, and discloses a bearing. The disclosed bearing comprises a bearing outer ring (1), a bearing inner ring (3) and a steel ball (2) between the bearing inner ring and the bearing outer ring. The bearing is characterized in that rolling channels of the bearing inner ring (3) and the bearing outer ring (1) are both in dual-rolling-channel structures, and the interval between the two rolling channels is 63mm; the size of the steel ball (2) is phi44.45mm; the contact angle of bearing is 50 degrees; the curvature of the rolling channels of the bearing inner ring (3) and the bearing outer ring (1) is 23.11mm; and the rolling channel eccentricity is 0.678mm. According to the bearing disclosed by the invention, the rolling channels of the bearing inner ring (3) and the bearing outer ring (1) are both in dual-rolling-channel structures, and the steel ball with specific size and the rolling channel curvature, eccentricity and the contact angle are adopted, under the condition of not increasing the appearance size of the bearing, the bearing performance of the bearing is improved greatly, and the using requirement of a wind electricity variable pitch bearing is well met.

Description

Bearing

Technical field

The invention belongs to technical field of bearings, be specifically related to a kind of bearing, be 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 affect 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 in 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.

Summary of the invention

In order to overcome above-mentioned technical problem, the objective of the invention is to propose a kind of bearing.

To achieve these goals, the present invention 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 roller path 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 present invention proposes, the raceway of bearing inner race, the raceway of bearing outer ring are two roller path structures, and the steel ball of employing specific dimensions and raceway curvature, offset, wrapping angle, in the situation that does not strengthen bearing boundary dimension, significantly promote the load-carrying properties of bearing, more meet the usage requirement of wind electricity pitch variable bearings.

Description of drawings

Fig. 1 is schematic cross-section of the present invention.

Fig. 2 is the structural representation of raceway among the present invention.

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

Embodiment

With specific embodiment the present invention 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 1 and bearing outer ring 3; 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 roller path 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)

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 roller path 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.

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