Criss-crossed roller bearing with novel sealing structure

Abstract

The invention provides a criss-crossed roller bearing with a novel sealing structure. The sealing pressure of a framework oil seal is reduced, the oil leakage rate of the bearing is reduced, and criss-crossed rollers are ensured to be lubricated sufficiently. The criss-crossed roller bearing with the novel sealing structure comprises a bearing inner ring and a bearing outer ring, wherein roller installation ring slots are formed in the corresponding thickness positions between an outer ring surface of the bearing inner ring and an inner ring surface of the bearing outer ring; the correspondingrollers are arranged in corresponding roller slots of the roller installation ring slots through a criss-crossed form; a framework oil seal installation seam allowance is arranged at the outer end ofan outer-end connecting ring slot gap in the thickness direction after the bearing inner ring and the bearing outer ring are assembled; a framework oil seal is arranged on the framework oil seal installation seam allowance and blocks lubricating oil at the corresponding end surface; a sealing element blocks the tail end of an inner-end connecting ring slot gap in the thickness direction of the bearing inner ring and the bearing outer ring, and concretely comprises a connecting ring, a transition flanging ring and an outer convex seal ring; and the first end surface of the connecting ring andthe inner end surface of the bearing inner ring are fixedly arranged in a fitting way.

Description

technical field [0001] The invention relates to the technical field of bearing structures, in particular to a cross roller bearing with a novel sealing structure. Background technique [0002] In the application of the harmonic reducer, the crossed roller bearing not only supports the role of sealing, but also takes the role of sealing. In the existing crossed roller bearing, only one skeleton oil seal is used as the sealing structure. This kind of lubricating oil sealing structure is used in In actual practice, the oil leakage rate is relatively high, and then the sufficient and effective lubrication of the cross rollers cannot be guaranteed. Contents of the invention [0003] In view of the above problems, the present invention provides a cross roller bearing with a new sealing structure, which reduces the sealing pressure of the frame oil seal, reduces the oil leakage rate of the bearing, and ensures sufficient lubrication of the cross rollers. [0004] A crossed rolle...

AI Technical Summary

Problems solved by technology

[0002] In the application of the harmonic reducer, the crossed roller bearing not only supports the role of sealing but also bears the function of sealing. In the existing crossed roller bearing, only one skeleton oil seal is used as the sealing structure. This kind of sealing structure of lubricating oil is used in In actual practice, the oil leakage rate is relatively high, and the sufficient and effective lubrication of the cross rollers cannot be guaranteed.

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