Combination bearing suitable for elevator disc tractor

Abstract

The invention relates to the field of bearings, in particular to a combination bearing suitable for an elevator disc tractor. The combination bearing comprises a bearing inner ring, a first bearing outer ring and a second bearing outer ring, wherein the first bearing outer ring and the second bearing outer ring are positioned on the bearing inner ring, the first bearing outer ring and the second bearing outer ring are arranged in the axial direction of the bearing inner ring in a gathered manner; a radial cylindrical roller assembly is arranged between the first bearing outer ring and the bearing inner ring, a ball bearing assembly is arranged between the second bearing outer ring and the bearing inner ring, four-point contact of the ball bearing assembly in the radial direction and the axial direction is achieved, and it is necessary to note that four-point contact is that two end points, in the axial direction of the bearing inner ring, of the ball bearing assembly and two end points, in the radial direction of the bearing inner ring, of the ball bearing assembly make contact with a component to form positioning. The combination bearing is mainly designed for the elevator tractor and other machines; due to the fact that the combination bearing can bear radial loads and axial loads at the same time, the combination bearing is especially suitable for occasions where the rotating speed is relatively high and relatively large axial loads exist; and the combination bearing is easy to mount and demount and very high in bearing capacity.

Description

technical field [0001] The invention relates to the field of bearings, in particular to a combined bearing suitable for an elevator dish-shaped traction machine. Background technique [0002] A bearing is a component used in a rotating mechanism to support, reduce friction and bear loads. Elevator traction machine is a kind of machinery that needs to use larger radial load and axial load bearings. At present, a set of deep groove ball bearings and a set of NU cylindrical roller bearings are mainly used in China to meet the needs of working conditions, but the axial The load is difficult to meet the requirements, and the radial load can only barely meet the requirements, and due to the dispersion and concentricity of the inner diameter of the inner ring and the size of the rolling (groove) of the two sets of bearings, the bearing runs with a lot of noise and the sealing effect of the bearing. Also relatively poor. SUMMARY OF THE INVENTION [0003] In order to solve the ab...

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Problems solved by technology

The elevator traction machine is a kind of machinery that needs to adopt large radial load and axial load bearings. At present, a set of deep groove ball bearings and a set of NU-type cylindrical roller bearings are mainly used in China to meet the requirements of working conditions, but the axial The load is difficult to meet the requirements, and the radial load can only barely meet the requirements, and because of the dispersion and concentricity of the inner diameters of the inner rings of the two sets of bearings and the dimensions of the rolling (groove) and the concentricity, the noise of the bearings is relatively large during operation, and the sealing effect of the bearings is low. also poor

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