Abstract: A belt conveyor supporting arrangement includes three main components for preventing the belt from being damaged. The first component is a backing bed apparatus comprising a smooth slidable top plate having plural air flow channels at the surface thereof which is supported by a cushion plate. The second component is a skirt plate device for shutting the opening between the surface of the belt and the chute with little contact friction. The third component is a bending tension return-roller apparatus M3 comprising a pair of rollers inclined like the symbol [ ] and having a device for adjusting the angles thereof.