In a special case, a bunker conveyor is used to stock up work pieces with a filling volume of between 5 and 200 litres that are equipped with Ruhrgetriebe worm geared motors in a three-phase and AC design. However, the transport speed of the single stage worm gear was too high for the bunker conveyor in order to fill the work pieces into the sorting pot in a dosed manner.
The Development Department managed to find a worm geared motor in stock that could be adjusted to match the particular needs of the customer. The power of the motor already matched the requirements, but the structural design and the output shaft had to be modified.
Thus, the Ruhrgetriebe engineers developed prototypes within a very short period of time: A double stage worm geared motor as an attachment version complete with flange (B14) and hollow shaft for direct connection and a speed of only 0.9 rpm in comparison to 14 rpm as it was the case with the basic motor.
With regard to the individual application, this now means the following: Whereas the previous belt speeds amounted to 2 m/min, the miniature parts can now be fed to the sorting tops extremely slowly at a speed of only 0.5 m/min via the bunker conveyor. This means that the precise separation of the parts is completely guaranteed.
Furthermore, the hopper belt conveyors are equipped with a seal curtain and a reflex sensor at the factory in order to monitor the fill level. A special feature is the opportunity to quickly empty the device via a folding rear wall and the reverse mode of the drive unit.
With its various gear reductions, the new SN 6 FH worm geared motor as attachment version complete with flange and hollow shaft offers output speeds of between 0.9 and 56 rpm with maximum permitted torques of between 11 and 15 NM in S1 mode and can therefore be utilised for the applications of other customers as well.
