Force analysis of the material handled by belt conveyor at loading point and in accelerated area

During the transportation, the forces exerted on the material handled by the belt conveyor at the loading point and in the accelerated area are very complicated. The forces are analyzed and some mistake is found in the calculations in ISO5048.1989 (E). Firstly, the frictional resistance F-Af brought by material's momentum at the loading point is not taken into consideration. Secondly, the formulae of the resistance F-f and F-gL, which are between material and baffle plates in the accelerated area and non-accelerated area respectively, are false. Then the right formulae of F-Af, F-f and F-gL are given.