Rubber sealing ring for bearing

Abstract

The rubber sealing ring comprises a sealing ring body, a dovetail groove is formed in the upper end of the sealing ring body, a mounting part is arranged at the lower end of the sealing ring body, a triangular fulcrum is arranged at the left end of the sealing ring body, a first sealing limb and a second sealing limb are arranged at the right end of the sealing ring body, and a gap facilitating expansion deformation is reserved between the first sealing limb and the second sealing limb. The front end of the first sealing limb is provided with a first inclined surface and a second inclined surface which intersect to form a sealing lip extending forwards, the sealing lip is in contact fit with a first sealing surface of an inner ring or an outer ring of the bearing, the second sealing limb is matched with a radial groove of the bearing, the upper end surface of the second sealing limb is of a multi-section inclined surface structure, and the lower end surface of the second sealing limb is of an inclined surface and arc structure; the front end of the second sealing limb serves as a sealing lip to be in contact fit with the second sealing face in the radial groove, a protruding blocking shoulder is arranged on the lower side of the second sealing limb, and the blocking shoulder is in contact fit with the blocking shoulder of the fixing groove. The device can effectively prevent leakage of lubricating grease, and has the advantages of good pressure maintaining performance, small rotating torque, convenience in installation and use and the like.

Description

technical field [0001] The invention relates to a rubber sealing ring, in particular to a sealing ring used for a yaw variable pitch bearing of a large-megawatt wind turbine, belonging to the technical field of sealing. Background technique [0002] With the continuous development of domestic wind power generation to large megawatts, the bearing capacity of yaw pitch bearings is getting larger and larger, and the development from ball bearings to roller bearings also puts forward higher requirements for sealing reliability. [0003] The yaw pitch bearing is an important part of the wind turbine, and each wind turbine has one yaw bearing and three pitch bearings. The pitch bearing is installed at the connection between the blade and the hub, which can adjust the blade attitude and change the angle between the wind and the blade. The yaw bearing is installed at the connection between the hub and the tower, which can adjust the direction of the fan so that the blades are align...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rubber sealing ring for bearings to overcome the sealing problems existing in the yaw and pitch bearings of large megawatt wind turbines

Images