Single bearing structured heavy-duty locomotive traction motor

Abstract

The invention relates to a traction motor, more particularly, to a single bearing structured heavy-duty locomotive traction motor. The invention aims to solve the unreasonable connection structure between the rotor shaft driving end and the power input shaft of the gear box of a single bearing structured heavy-duty locomotive traction motor in prior art and to solve the problem that the bearing can not be replaced online. The rotor shaft driving end of the single bearing structured heavy-duty locomotive traction motor is connected with a coupling shaft in a column shape; the coupling shaft is provided with threaded through holes along the axis line of the columnar coupling shaft, and one end face of the coupling shaft is provided with meshing teeth. The driving end face of the rotor shaft is provided with a fixing hole, and the axis of the fixing hole coincides with the axis of the rotor shaft. One end of the non-engaging tooth of the coupling shaft is inserted into the fixing hole with interference fit. According to the invention, it is possible to meet the application requirement of a 30 ton axle-weight locomotive, and to realize the function of replacing the bearing without unloading the locomotive. Therefore, the repair time and cost for locomotive traction motor faults are greatly reduced while the punctuality rate and utilization rate of the locomotive are improved.

Description

Technical field [0001] The invention relates to a traction motor, specifically a heavy-duty locomotive traction motor with a single bearing structure. Background technique [0002] The traction of a locomotive is limited by the interaction between the hub and the track. In order to increase the limit of the single-axle traction of the locomotive, increasing the axle load of the locomotive is the most effective and direct way. [0003] The United States, Australia, Brazil, Sweden and other countries have long started to implement heavy-duty railway locomotive transportation. Since 1997, the axle load of the Swedish mine railway has been increased from 25t to 30t; in 1990, the axle load of all first-class railways in the United States has been increased to 33t; the Canadian first-class railway has also increased to 33t since 1995; the axle load of Australia’s BHP heavy-haul railway has increased To 35t, through the long-term operation test of large-axle locomotives abroad, large-axl...

AI Technical Summary

Problems solved by technology

[0009] The invention solves the problem of unreasonable connection structure between the drive end of the traction motor rotor shaft and the power input shaft of the gearbox in the existing heavy-duty locomotive with a single-bearing structure, and the problem that the bearing cannot be replaced online, and provides a heavy-duty locomotive with a single-bearing structure traction motor

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