Integral sealed axlebox bearings for locomotive axleboxes

Abstract

The invention discloses an integrated sealing axle box bearing for a locomotive axle box. Two symmetrical rollerway nests are arranged on the outer circle of the bearing and can bear radial and bidirectional axial loads. The outer circle rollerway nests and an inner circle rollerway nest of the bearing have certain convexity. The generatrix of a roller body adopts a novel logarithmic curve repair type; and compared with a traditional logarithmic curve repair type, the middle part of the roller body is small in repair type amount, and the convexity at the two ends of the roller body changes greatly. The inner diameter surfaces of the two ends of the outer circle are each provided with an annular threaded opening so that the outer circle can be conveniently in interference fit with a sealing assembly. The inner circle of the bearing is of an inclined rim structure, and the lubricating and stress conditions of the roller body and the inclined rim are improved. A middle spacer is arranged between two inner circle assemblies and used for adjusting the axial play of the bearing, and the combination rate of the bearing is improved. The axle box bearing provided by the invention has the characteristics that the sealing effect is good, the bearing is high in carrying capacity, and the axial play is convenient to adjust, the bearing failure risks are lowered, and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of a Hexie axle box bearing, in particular to an integral sealed axle box bearing for a Hexie axle box. Background technique [0002] Axle box bearing is one of the key components of railway locomotives, and its performance directly affects the safety of railway operation. Understanding the application of axlebox bearings on railway vehicles and designing axlebox bearings that meet actual working conditions will not only help improve domestic bearing technology, but also ensure the safety of railway rolling stock. In recent years, by studying the application effect and failure mode of axlebox bearings on locomotives and vehicles, it is found that bearing failures are mainly caused by rolling elements, raceway fatigue, debris indentation, strain or scratches on the outer ring or inner ring. The main reasons for the above phenomenon are the uneven force on the bearing raceway, the excessive force on both ends...

AI Technical Summary

Problems solved by technology

In recent years, by studying the application effect and failure mode of axle box bearings on rolling stock, it is found that bearing failure is mainly caused by raceway fatigue, debris indentation, strain or scratches on rolling elements, outer rings or inner rings. The main reason for the above phenomenon is that the force on the bearing raceway is uneven, and the force on both ends is too large, which leads to fatigue failure of the bearing raceway, and impurities enter the interior during installation or operation, resulting in continuous damage to the rolling bearing during the operation of the bearing. The quality of the road surface will eventually cause the failure of the bearing

Images