Large-scale tram transport mining carts are equipped with dedicated unloading stations,where the carts run along unloading curved tracks.Addressing the problem of electric locomotives unable to generate sufficient driving force for mining carts to pass through unloading stations stably,this study,taking the unloading stations of a copper mine in Serbia as an example,analyzes the speed variation of mining carts during unloading processes.By setting up external power device to control unloading speed,the unloading process of large-scale tram transport mining carts becomes smoother and more reliable,greatly promoting the automation of production system.