Combination bearing for disc-shaped elevator tractor

Abstract

The invention relates to the field of bearings and provides a combination bearing for a disc-shaped elevator tractor. The combination bearing comprises an inner bearing ring and a first outer bearing ring and a second outer bearing ring which are located on the inner bearing ring; the first outer bearing ring and the second outer bearing ring are closely arranged along an axial direction of the inner bearing ring; a radial cylindrical roller component is arranged between the first outer bearing ring and the inner bearing ring; a ball bearing component is arranged between the second outer bearing ring and the inner bearing ring; a first sealing ring is arranged between the first outer bearing ring and the axial outer end of the inner bearing ring; a second sealing ring is arranged between the second outer bearing ring and the axial outer end of the inner bearing ring. The combination bearing is mainly designed for the machinery, such as the elevator tractor; the combination bearing can simultaneously bear the radial load and the axial load, and is especially suitable for the occasions with higher rotating speed and higher axial load; the assembling and disassembling are simple and the bearing capacity is ultrahigh; the combination bearing has an excellent sealing effect and can guarantee that the lubricating grease does not leak in the running process of the bearing.

Description

technical field [0001] The invention relates to the field of bearings, in particular to a combined bearing 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. 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 r...

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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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