Abstract:
On the basis of
deep investigation of locomotive traction gears manufactured at
home and abroad, a variety of measures are putted forward to
improve the driving load-bearing capacity and working life of
our country's high-speed locomotive traction gears. The measures
include the following five aspects: optimally selecting the
material and heat treatment process, optimally designing the
tooth profile, reasonably choosing the manufacture accuracy and
technique, optimally choosing the lubricant and the way of
lubrication and seal, improving the dynamic feature of the
gearing. In the respect of the tooth profile, a hob with optimal
cutter angles is designed to make root thickness on the
dangerous section as large as possible and the stress
concentration as small as possible. Addendum modification
coefficient is optimized to minimize the maximum flash temperature
in the course of meshing. Finally, finite element analysis
method is used to calculate the deformation and the stress of
teeth accurately. And on this basis, optimal profile correction
and axial modification have been designed with regard to the
start, continuous running and high speed travel of the
locomotive.
Key words:
High-speed gear Working life Load-bearing capacity Optimum design
* This project is supported by Scientific and Technical Developing
Foundation of the Ministry of Railway. Manuscript received on February
1, 1996
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