Development of Flat Car for 100-ton Hot-rolled Coils
This article analyzes the parameters of existing similar car models in China,proposes the main performance parameters of the flat car for 100-ton hot-rolled coils and determines the main structure of the carbody accordingly,including underframe,coil support,brake unit,coupler&draft gear and bogie.When determining the parameters of the bogie,the wheels with a diameter of 915 mm are used to effectively reduce the wheel-rail contact stress and the wheel-rail wear.The upper face of center plate of empty car is fixed at 680mm approximately to solve the problem of the conventional 100-ton flat car,i.e.making a lowered draft sill with complicated structure for the center sill to reach the required coupler height of 880 mm,simplifying the production process of the center sill and improving the product quality.This article finally introduces the evaluation standard and relevant calculation of the car.