1 Scope
This standard specifies methods for the calculation of the operating power requirements on the driving pulley of a belt conveyor, and of the tensile forces exerted on the belt. It applies to belt conveyors with carrying idlers.
2 Definitions
For the purposes of this standard, the following definitions apply.
2.1 Surcharge angle (of the material handled), θ : Angle formed with the horizontal by the tangent to the material cross-section at the intersecting point with the belt in motion (see Figure 3). The surcharge angle is expressed in degrees.
2.2 angle of repose, α: Angle formed with the horizontal
by the surface of a conical heap of material falling slowly and regularly from a small height onto a horizontal stationary surface. The angle of repose is expressed in degrees.
