Het (ont)sporen van een kunststof band over een scheefstaande rol.
Report 94.3.TT.4360, Transport Engineering and Logistics.
Steering-rollers are used to adjust a belt over rollers that is out of
alignment. A steering-roller is a cylindrical roller, of whieh the axie
can be moved in such a way, that there is an angle between this axle and
the other axles.
The belt, which runs over the rollers, moves sideways over the rollers to
that point of the roller, where the distance between the axles is the smallest.
This behaviour of the belt can be explained by the effect of unrolling. The
belt moves then sideways over the roller, through the fact that the belt
runs on the roller at an angle. Relative movements of the belt with regard
to the rollers don't occur.
In this experimental assignment attempts are made to gain a dear sight into
the way the belt moves over the crooked steering-roller. In a special
testing-installation images are made of the belt, when it moved over the
From the results it is concluded, that the effect of unrolling is a reasonable
explanation for the effect, that steering-rollers have on the belt.
The way the movement of the belt over the roller depends on the belt-tension,
the belt-speed and the steering-angle couldn't be detected because of the
inaccuracy of the images, that where made. After implementation of the
recommendations this can be examined in a next assigninent.
Reports on Transport Engineering and Logistics (in Dutch)
, TU Delft