Low-frictional-loss thrust conical roller bearing

Abstract

A low-frictional-loss thrust conical roller bearing comprises an upper ferrule, a lower ferrule, a conical roller and a holder. The geometrical parameters of the conical roller and the ferrules meet the pure rolling geometrical conditions and the axial sliding self-locking physical conditions of the roller. The large end face of the conical roller makes contact with the top face of a frame-shapedpocket of the holder, and the large end of the conical roller does not make contact with the stop edges of the upper ferrule and the lower ferrule. The low-frictional-loss thrust conical roller bearing has the beneficial effects that a sliding state of a rolling belt between the rolling body and a rolling way is changed into a pure rolling state, the large end of the conical roller does not make contact with the stop edges of the upper ferrule and the lower ferrule, thus the situation that the large end of the roller makes contact with the stop edges of the ferrules, and therefore sliding friction occurs is avoided, friction between the large end of the roller and the holder is reduced to the largest extent, and the friction and lubricating conditions between the holder and the large end of the conical roller are improved to the greatest extent; and meanwhile, the contacting strength of the contacting position of the large end of the roller and the holder is ensured, the efficiency ofthe bearing is improved, and the fatigue life of the bearing is prolonged.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to roller bearings. Background technique [0002] In the prior art, generally used thrust tapered roller bearings, the geometric relationship between the roller and the raceway of the ring satisfies the geometrical condition of pure rolling of the roller, and there is no limitation that the relationship between the roller and the raceway of the ring satisfies the axial direction of the roller. Due to the physical conditions of sliding self-locking, there is a large gap between the frame-shaped pocket of the cage and the two ends of the tapered rollers, and the function of the cage is mainly to separate the tapered rollers. The deficiency of the thrust tapered roller bearing of the prior art is: when the physical condition of the axial sliding self-locking of the roller is not satisfied between the roller and the raceway of the ring, the axial derived force generated under the axial...

AI Technical Summary

Problems solved by technology

The deficiency of the thrust tapered roller bearing of the prior art is: when the physical condition of the axial sliding self-locking of the roller is not satisfied between the roller and the raceway of the ring, the axial derived force generated under the axial load of the bearing It will cause the roller to slide axially along the roller from the small end to the big end. In order to prevent the roller from sliding axially, the rib of the ferrule prevents the roller from sliding axially.

The friction between the rollers and the raceways and between the rollers and the ribs of the rings not only causes wear of the friction elements, but also consumes a lot of energy, which not only reduces the efficiency of the bearing, but also reduces the life of the bearing

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