Wear-resisting turntable bearing

Abstract

The invention provides a wear-resisting turntable bearing, belongs to the technical field of bearings, and aims to solve the problems that the existing turntable bearing is complicated to mount and large in noise. The wear-resisting turntable bearing comprises an outer ring and an inner ring arranged in the outer ring, wherein the inner ring and the outer ring are coaxial and are arranged in a centring manner; a wear-resisting ring is arranged between the outer ring and the inner ring; the wear-resisting ring and the outer ring are coaxial and are arranged in a centring manner; an outer ring surface of the wear-resisting ring and an inner ring surface of the outer ring are in sliding contact in the circumferential direction; an inner ring surface of the wear-resisting ring and an outer ring surface of the inner ring are in sliding contact in the circumferential direction; a position-limiting structure I for limiting the opposite axial motion of the inner ring and the wear-resisting ring is arranged between the inner ring and the wear-resisting ring; and a position-limiting structure II for limiting the opposite axial motion of the outer ring and the wear-resisting ring is arranged between the outer ring and the wear-resisting ring. The wear-resisting turntable bearing adopts the wear-resisting ring to replace a running pulley in a traditional bearing, and is simple and easy to mount and manufacture, lower in noise during working and smoother and steadier in operation.

Description

technical field [0001] The invention belongs to the technical field of bearings and relates to a wear-resistant turntable bearing. Background technique [0002] Bearings usually consist of an inner ring, an outer ring, multiple rollers and a cage. The multiple rollers are installed in the corresponding pockets on the cage seat and then placed in the raceway formed by the inner ring and the outer ring. The frame cover is fixed on the upper end surface of the cage seat. The slewing bearing is a kind of large or extra-large bearing that can bear comprehensive load and has a special structure. It is required to have the characteristics of compact structure, flexible rotation, and convenient installation and maintenance. For example, a slewing bearing for a blast furnace disclosed in a Chinese patent [the application publication number is CN103148096A] includes a first inner ring, a second inner ring, an outer ring and a plurality of rollers, the first inner ring, the second inn...

AI Technical Summary

Problems solved by technology

[0003] Although the above-mentioned slewing bearing achieves the purpose of compact structure, flexible rotation and convenient installation, the following problems still exist: 1. Since it is provided with axial raceways and radial raceways, and rollers are arranged in each raceway, The rollers need to be arranged in an orderly manner during installation, which is not easy to install; 2. When the bearing is rolling, the rolling friction between each roller and the adjacent roller, and the rolling friction between each roller and the inner ring and outer ring will produce a large Noise; 3. The oil circuit is arranged in the inner ring with twists and turns, which is difficult to manufacture. The oil circuit Z also requires the oil circuit in the first inner ring to be aligned with the oil circuit in the second inner ring, which brings difficulties to the installation; 4. Lubricating oil is used to lubricate it, and lubricating oil needs to be regularly added to the oil circuit. In some places, it is inconvenient to add lubricating oil or when lubricating oil is not added regularly, dry friction will greatly reduce the service life of the bearing.

Images