COMPARISON OF DIFFERENT TYPES OF DRIVE OF THE BELT CONVEYORS

ABSTRACT. Four types of drive are discussed: single pulley head drive (1H); dual pulley head drive (2H); single pulley head and tail drive (1H+1T); dual pulley head and single pulley tail drive (2H+1T). The belt tension forces and the necessary take-up force at steady-state working and at start-up are determined for the different types of drive. Calculations are accomplished for a concrete solved example - a stationary belt conveyor with the following assigned: profile layout; kind and characteristics of the transported material; capacity; belt width and belt velocity; linear mass of the material, of the belt, and of the idlers. A comparison is made of the greatest belt tensions for the four types of drive. Calculations for different lengths and angles of slope are accomplished. The coefficients of optimal power and traction force distribution are determined for the 2H, 1H+1T, and 2H+1T drives. The angles of slope (at given length of the conveyor), at which the actually transferred forces and power are closest to the optimal values, are determined. The boundary length of the conveyor (at various angles of slope), by which the belt forces for 1H and 2H drives are equal, are determined.