| 摘要 |
Invention herewith described explains a rubber supporting return roll for belt conveyor (1, 2) for transportation belt conveyors set on the belt conveyor, made of a solid frame comprising a stand and two vertical column supports. The rolls (1, 2) make a base of a metal cylinder which all over the external surface, where there are achieved paralel to each other protruding profiles in the form of flat rings (1', 2'), being in cross section in the form of trapezoid. With the supporting roll (1) the rings (1') are set each to other so that their step (K) is 0 value. With the returning roll (2) according to variation of embodiment of rings (2') set each to other so that the value of their step (K) is between 1 to 200 mm.
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