Rolling bearing provided with main and auxiliary rollers

Abstract

The invention relates to a rolling bearing provided with main and auxiliary rollers. The bearing is characterized in that an auxiliary roller is arranged between main rollers. The bearing has two main structural characteristics that: the main rollers and the auxiliary roller are arranged alternately, such that rolling surfaces of the main rollers only contact the rolling surface of the auxiliary roller and the inner and outer rings, and do not contact other parts of a retainer; and the diameter of the auxiliary roller is smaller than that of the main rollers, such that the auxiliary roller does not contact the inner and outer rings of the bearing. When the beating rotates, the rolling direction of the auxiliary roller is constantly opposite to that of the main rollers, and the movement directions of the main and auxiliary rollers are constant. The main rollers and the auxiliary roller have only a relative rolling relationship but no relative sliding relationship. Therefore, under normal condition, no sliding friction force exists between the main and auxiliary rollers, such that sliding friction force of the rolling bearing can be eliminated to a maximal extent.

Description

Technical field: [0001] Mechanical Parts. Background technique: [0002] In the past rolling bearings, no matter it is without cage or with cage, when the bearing rotates in a certain direction, the rolling direction of the roller is unidirectional on the same axis. We can use this only Bearings with a single rolling mode are referred to as: "single-roller rolling bearings", and "single-roller rolling bearings" have large sliding friction. For those without cages, it is mainly because there is a large sliding friction force between adjacent rollers. For rolling bearings with cages, it is because the relative motion between the rolling elements and the cage is still sliding, so that the bearing is still There is a defect of large sliding friction; multi-arrangement rolling bearings are also difficult to overcome the above defects. In order to overcome these defects of rolling bearings, I try to design a rolling bearing with primary and auxiliary rollers instead, so as to ov...

AI Technical Summary

Problems solved by technology

For those without cages, it is mainly because there is a large sliding friction force between adjacent rollers. For rolling bearings with cages, it is because the relative motion between the rolling elements and the cage is still sliding, so that the bearing is still There is a defect of large sliding friction; multi-arrangement rolling bearings are also difficult to overcome the above defects