| 摘要 |
The present invention relates to a belt drum to counteract the lateral movement of a belt running about the drum in relation to the drum, comprising two opposite ends (2), an axle (3) extending through said ends (2) and adjustable means surrounding said axle (3). The invention is characterized in that said means consists of rollers (5) connected to the ends (2) by means of pivots (4) or through shafts (9) journalled in said ends (2), said pivots (4) or said through shafts (9) having their rotary axis in parallel with the said drum axle (3) while the rotary axis of each roller (5) deviates from the rotary axis of the pivots or of the through shafts (9) in a diametrical plane. |
