OPTIMUM DESIGN OF HIGH-SPEED RAILWAY LOCOMOTIVE TRACTION GEAR

ＯＰＴＩＭＵＭＤＥＳＩＧＮＯＦＨＩＧＨ－ＳＰＥＥＤＲＡＩＬＷＡＹＬＯＣＯＭＯＴＩＶＥＴＲＡＣＴＩＯＮＧＥＡＲＬｉＬｉｘｉｎｇ；ＷａｎｇＸｉｕｑｉ；ＨｅＷｅｉｄｏｎｇ；ＺｈａｏＷｅｎｚｈｏｎｇ；ＱｉａｎＹｕａｎｍｅｉ（ＤａｌｉａｎＲａｉｌｗａｙＩｎｓｔ...

OPTIMUM DESIGN OFHIGH-SPEED RAIL WAYLOCOMOTIVE TRACTION GEAR

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 fol- lowing 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. Ad- dendum 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 , continuious running and high speed travel of the loco- motive .