Multiple-row cylindrical-roller thrust bearing with integral outer ring

Abstract

A multiple-row cylindrical-roller thrust bearing with an integral outer ring comprises the integral outer ring, multiple groups of inner rings and cylindrical rolling bodies; the outer ring and the inner rings are arranged in a radial direction; the internal diameter of the outer ring is provided with multiple V-shaped ports, and the V-shaped ports and a raceway surface at the external diameter of the inner ring form a V-shaped grove; the cylindrical rolling bodies are in circular cross arrangement in the V-shaped groove; and the integral outer ring, the multiple groups of the inner rings and the cylindrical rolling bodies are successively arranged in an axial direction. The outer ring and the inner rings of the bearing are arranged in the radial direction, so that the bearing is capable of simultaneously bearing the axial-direction load, the radial-direction load and the overturning moment. The radial-direction dimension of the bearing is reduced, so that the bearing is widely applicable to occasions when the radial-direction installment dimension is limited. By employing the cylindrical rollers, the contact area of the rollers and the raceway is increased, and the bearing capability and the service life of the bearing are improved.

Description

technical field [0001] The invention relates to a thrust bearing, in particular to a multi-row cylindrical roller thrust bearing with an integral outer ring. Background technique [0002] There are two types of existing thrust bearings: one is the radial thrust ball bearing group, which is composed of multiple layers. Each layer is generally composed of an outer ring, an inner ring and steel balls. The outer ring and the inner ring are arranged radially. A peach-shaped groove is formed between the raceway of the ring and the inner ring, and the steel balls are arranged on the inner circumference of the peach-shaped groove, and the contact between the steel balls and the groove is point contact. The other is a thrust cylindrical roller bearing, which includes a seat ring, a shaft ring and cylindrical rolling elements. The seat ring and the shaft ring are arranged axially, and the cylindrical rolling elements are arranged on the raceway surfaces of the seat ring and the shaft ...

AI Technical Summary

Problems solved by technology

[0004] 1. The existing radial thrust ball bearing group and the existing thrust cylindrical roller bearing mainly bear the axial load, but cannot bear the radial load and overturning moment

[0005] 2. The existing radial thrust ball bearing group is subjected to dynamic axial load during operation. Since the contact between the steel ball and the raceway is a point contact, the contact area is small and the contact stress is large, and the steel ball and the raceway are prone to contact fatigue wear. Low load carrying capacity and short service life

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