This article in has analyzed the heavy-caliber self-propelled guns automatic loading system's duty and in the structure principle foundation, to the chassis magazine type, the turret (hanging basket) the turntable type and the turret after body section magazine type and so on 3 kinds might enhance the heavy-caliber self-propelled guns rate of fire the ammunition automatic loading system's organization plan to carry on this summary large scale, and has carried on the analysis to each kind of plan's structure principle and the movement process, through to these 3 kind of plan's analysis comparison, chose the turret (hanging basket) the turntable type to carry on the design to this transmission system, used the guide rail chain to take this system's transmission system, and determined its main spare part parameter of movement, finally to this system establishmentThree dimensional full-scale mockup. abstract automatic loading system turret (hanging basket) turntable type guide rail chain three dimensional full-scale mockup