DOUBLE-BEARING STRUCTURE FOR POSITIONING END OF TRACTION MOTOR

WIPO Patent Application WO/2019/214189

A1

Disclosed is a double-bearing structure for a positioning end of a traction motor, relating to the field of traction motors, and in particular, a double-bearing structure for a positioning end of a traction motor. The technical solution is as follows: a bearing housing is provided with a one-step stepped hole tapered from the inside to the outside, the stepped face of the stepped hole being located in the middle of the stepped hole; a cylindrical roller bearing and a four-point contact ball bearing are respectively mounted in the bearing housing from either end of the bearing housing; the outer ring of the cylindrical roller bearing is pressed by an inner bearing cap, so that the influence of the axial cumulative error caused by mounting from one direction can be reduced, avoiding the problem that the surface of an outer sealing ring cannot be pressed to be level. The present invention is mainly applied to a traction motor, and provided is a double-bearing structure for a positioning end of a traction motor sleeved on a rotary shaft.

WO/2022/220463	STRUCTURE FOR MOTOR AND MANUFACTURING METHOD OF SAME
JP2896586	[Title of Invention] Mold Motor
JPS59103023	ELECTRIC CORROSION INHIBITIVE TYPE ROLLING BEARING

LI GUANG (CN)
GUO YANLIN (CN)
MA QIANZHU (CN)
LIU CHENXIAO (CN)
HUANG XIAOYUN (CN)

PCT/CN2018/114165

November 14, 2019

November 06, 2018

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CRRC YONGJI ELECTRIC CO LTD (CN)

H02K5/173; F16C35/06

CN108696037A	2018-10-23
CN105186763A	2015-12-23
CN105141065A	2015-12-09
DE10022408A1	2000-12-14

LEADER PATENT & TRADEMARK FIRM (CN)

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