Design And Analysis For Big Power Heavy-Duty Shunting Locomotive

With the rapid development of national economy and the large-scale investment in recent years, rail freight turnover is almost keeping double-digit increase. Freight quantity is more and more large, so conflict between carry quality and carry quantity has increasingly emerged. And traction destiny is not matching so that transport ability is greatly decreased. In order to solve operational bottle-neck of national shunting locomotives, my company embarks on designing a new generation of shunting internal combustion locomotive. On the basis of4000horsepower loco, using HeXie serial locomotive advantage for reference, through investigating various existent loco, the new generation of high power AC transmission shunting internal combustion locomotive is born.The carbody which will transfer force from different direction is main body of the whole locomotive and must normally run under all the bad conditions. The carbody adopts single driver’s cab and outside corridor structure; the underframe is main loading part and use integral loading fuel bank to meet the requirements of carbody v and successfully control total weight.Because this locomotive is new design, carbody structure must carry on theory calculation analysis about strength、rigidity and vibration、platform fatigue performance. The large-scale and general finite element software—ANSYS is adopted to analyze the carbody of this new high power AC transmission shunting locomotive. According to TB/T2541-1995《Diesel、Electric locomotive Carbody static strength test method》, carbody carry on static strength calculation analyze; according to EN12663-1:2010《railway application structure requirements of railway vehicle carbody)), carbody structure will be on calculation analysis of vibration mode and fatigue strength. Through the above theory analysis, we find out design weakness to optimize carbody structure in time.The result shows intensity%rigidity and libration of carbody structure meets the design requirements. Flat weld meets fatigue requirements; large scale of T type weld meets fatigue requirements; exceeding fatigue limits weld should be conducted by weld toe polishing and weld spraying bill.