Bearing device for rolling stock axle

Abstract

An annular spacer 20 formed by fixing an annular elastic seal material 21 to an outer diameter side peripheral edge part integrally with each other is installed between the width face of the inner ring 3 of a roller bearing 2 fitted to an axle 1 and the width face of a rear cover 11 (ring member) fitted to the axle 1 and restricting the axial position of the inner ring 3 relative to the axle 1 so as to be brought into a slidable contact with each other in the state of elastically and deformably fitting the elastic seal member 21 to the outer periphery of a projected step part 25 formed on the width face of the rear cover 11. The annular spacer 20 is sealed by the elastic seal material 21 in a contact part between the inner ring 3 and the rear cover 11 in the state of pressing the elastic seal member 21 by the width faces of the inner ring 3 and the rear cover 11 opposed to each other.

Description

technical field [0001] The present invention relates to a bearing device that rolls an axle of a railway vehicle and is supported by a bearing. Background technique [0002] A bearing device for an axle of a railway vehicle includes a rolling bearing mounted on the axle, and a set of front and rear ring members mounted on the axle and determining the axial direction positioning of the inner wheel of the rolling bearing. The ring member consists of a rear cover abutting against the rear surface of the inner wheel and an oil cut-off ring abutting against the front surface, or a rear cover and a front cover abutting against the front and rear surfaces of the inner wheel, and any one of them has been normalized (baked) carbon steel. [0003] Figure 7 Shown is a general bearing device for a railway vehicle axle. In this bearing device, a set of annular members of a rear cover 11 and a front cover 12 abut against both ends of an inner wheel 3 of a rolling bearing 2 mounted on a...

AI Technical Summary

Problems solved by technology

[0007] Figure 8 The bearing device for railway vehicles is effective in that the liner 32 suppresses the wear of the inner wheel 3 and the rear cover 11 and reduces the generation of friction and wear powder. It also flows to the inside of the bearing, causing failures such as deterioration of the lubricant inside the bearing, and it is difficult to suppress the occurrence of such failures

[0008] exist Figure 9 In the bearing device, the outflow of the friction and wear powder from the contact part X of the inner wheel 3 and the rear cover 11 to the bearing can be suppressed by the elastic member 33, but it is caused by the generation of wear powder at the contact part X and the accumulation of wear powder. the problem still exists

[0009] Based on the above circumstances, it has been considered to Figure 8 the liner and Figure 9 However, in this case, the number of components increases, the number of assembly man-hours for the entire bearing device increases, and the manufacture and assembly of the bearing device becomes difficult.

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