Cylindrical Roller Bearings

Abstract

The invention provides a cylindrical roller bearing. The cylindrical roller bearing comprises an inner ring, an outer ring, a roller, a cage and a sealing member. The sealing member is arranged at axial direction end of the outer ring and the inner ring, and is used for sealing a space between the outer ring and the inner ring, the sealing member comprises a shield, wherein the shield is fixed on the axial direction end of the outer ring; a clasp which is fixed by relating to the inner ring, and protrudes to the outside of the cylindrical roller bearing along the axial direction of the cylindrical roller bearing; a rotor which is fixed by relating to the clasp; a stator which is fixed by relating to the shield; and a corrugated pipe, which extends along the along the axial direction of the cylindrical roller bearing, arranged between the shield and the axial direction outboard end of the clasp along the axial direction of the cylindrical roller bearing, and used for extruding the stator or the rotor for keeping contact of the rotor and the stator. The cylindrical roller bearing allows the inner ring and the outer ring to have large axial displacement amount, and still keeps the sealing performance of the bearing.

Description

technical field [0001] The present invention relates to a cylindrical roller bearing, in particular to a cylindrical roller bearing for use in railway vehicles. Background technique [0002] In the prior art, cylindrical roller bearings are widely used in mechanical equipment of vehicles. In order to realize the isolation of the inner and outer spaces of the bearing, cylindrical roller bearings are usually provided with a sealing structure. The sealing ring in the sealing structure of the prior art cylindrical roller bearing is usually a gap seal. Because of the special kinematic behavior of the middle wheel set of the load-bearing axle of a railway vehicle, it is sometimes necessary to generate relatively large axial displacements between the outer and inner rings of the bearing, especially on curved paths with small radii in railway vehicles Even more so when cornering. This means that the inner ring and loose lip ring in the bearing can move axially relative to the out...

AI Technical Summary

Problems solved by technology

When the customer requires the bearing to have a large axial displacement in some applications, Figure 1a The function of the non-contact seal shield shown is not satisfactory because the axial displacement of the outer ring, cage, seal shield and rollers relative to the inner ring and loose lip ring may be very large during the operation of the bearing. large, which results in a pump-like pumping effect in the gap between the bearing's seal shield and the inner ring or loose lip ring

Due to the suction force of this suction effect, grease leakage may occur and contaminants may enter the bearing

As a result, this will result in grease leaking to the outside and contamination entering the bearings when the train turns

As a result, the service life of the bearing will be reduced, and the maintenance interval of the bearing will be shortened, thereby failing to meet customer requirements

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