Traction motor capable of online replacement of bearing

A technology for traction motors and bearings, which is applied in the field of traction motors for online replacement of bearings. It can solve the problems that locomotive traction motors cannot replace bearings online, and achieve the effects of reducing maintenance time and cost, avoiding leakage, and improving punctuality and utilization.

Active Publication Date: 2016-11-30
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problem that the existing locomotive traction motor cannot

Method used

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  • Traction motor capable of online replacement of bearing
  • Traction motor capable of online replacement of bearing

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Embodiment Construction

[0011] A traction motor with online bearing replacement, including machine base 1, non-drive end cover 2, rotor 3, bearing 5, bearing retaining ring 6, bearing angle ring 10; also includes cover 11, bearing seat 16, shaft head cover plate 14. The bearing hole on the bearing seat 16 is a stepped hole that tapers from the outside to the inside; the outer ring of the bearing 5 withstands the stepped surface of the bearing hole of the bearing seat 16, and is interference fit with the bearing hole of the bearing seat 16. The inner ring of the bearing 5 bears against the shoulder of the rotor shaft and has an interference fit with the rotor shaft; the bearing seat hole on the end cover 2 of the non-drive end is a stepped hole tapered from the outside to the inside, and the inner end surface of the bearing seat 16 tops The stepped surface of the bearing seat hole of the non-drive end cover and the transition fit with the stepped seat hole, the bearing hole wall at the inner side of th...

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PUM

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Abstract

The invention relates to a traction motor and specifically relates to a traction motor capable of online replacement of a bearing, for solving the problem of incapability of online replacement of a bearing by use of a conventional locomotive traction motor. The traction motor comprises a support, a non-driving end cover, a rotor, the bearing, a bearing back-up ring and a bearing angular ring, and further comprises a sealing cover, a bearing pedestal and a spindle nose cover plate, wherein the bearing is in interference fit with a bearing hole of a bearing pedestal, the bearing pedestal is in transition fit with the non-driving end cover, and the bearing angular ring is in interference fit with a rotor shaft; the bearing back-up ring is in contact with an outer ring of the bearing and is fixed to the bearing pedestal by use of a bolt, and the spindle nose cover plate is fixed to the end surface of the rotor shaft; the sealing cover and the end cover are in interference fit and are fixed by use of a bolt; and the sealing cover, the spindle nose cover plate, the bearing back-up ring and the bearing pedestal are provided with screw holes. According to the invention, the function of online replacement of the bearing without unloading can be realized, the maintenance time and the maintenance cost of a fault locomotive traction motor are greatly reduced, and the punctuality rate and the utilization rate of locomotive operation are improved.

Description

technical field [0001] The invention relates to a traction motor, in particular to a traction motor capable of replacing bearings on-line. Background technique [0002] The bearing is the most precise core part of the motor, which supports the rotating structure of the motor and makes the motor run smoothly. At the same time, due to the transitional role of the dynamic and static structure of the motor, the bearing is also a part of the motor with serious wear and tear, and it needs to be checked and replaced regularly. [0003] In order to solve the contradiction between its own volume and the limited installation space of the locomotive, the traction motor of the locomotive usually adopts a single-bearing structure without a transmission end cover, that is, when the motor is installed, the mating surface of the motor and the gearbox acts as the transmission end cover of the motor, and the motor and the Gearbox in one piece. This makes the steps of unloading and loading v...

Claims

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Application Information

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IPC IPC(8): H02K5/16H02K15/14H02K15/00
CPCH02K5/163H02K15/0006H02K15/14
Inventor 张培军张旋李沛
Owner CRRC YONGJI ELECTRIC CO LTD
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