| 摘要 |
<p>The roll driving unit has one driving roll (1) which may be driven by a motor (3) which may be pivotingly arranged in a guiding device (5) with which it may pivot with respect to a base (2) in a motion path configured as an arc of a circle between a lower rest position and an upper driving position. For pivoting the driving roll (1) there is provided a control device which comprises a coupling unit intended to transmit the torque moment between a gear mechanism (50) driving the drive roll (1) and the guiding device (5). The gear mechanism has a first gear wheel driven by the motor which reversally drives a second gear wheel arranged so as to resist to the rotation to the driving shaft of the drive roll (1). To enable the simplest possible mounting and reduce the side of the unit, there is provided to pivotingly fix to the base (2) the shaft (20) of the first gear wheel and to arrange the motion path configured as an arc of a circle of the drive roll (1), generated by the guiding device (5), concentrically with respect to the rotation axis of the shaft (20) of the first gear wheel.</p> |
