My query is on the tyre/s on the rotating drum. In my case, I am working on a 30 metre long, 3.5 metre dia kiln (rotating drum). The drive is through Girth Gear in the centre driven by shaft and pinion assembly. At both sides of the girth gear, there is a tyre supported by two rollers.
Between the tyre and the drum, there are chair plates which are welded to the drum. Between the Tyre ID and the chair plate there is gap to allow for expansion. The Kiln is used to dry product therefore it is heated.
While in operation, the tyre spins on the chair plate. I am informed by the operator that the spin could be half a round in 12 hour shift.
My question is why do we allow the tyre to spin (slip) on the drum? If I was to restrain the spin (slip), what risks do I add to the operation of the kiln.
The issue is that I have a contractor working on grinding the tyre. The machine used is a belt grinder and the cutting pressure is maintained by spring loading. The operation of grinding the tyre is unacceptably high. My thought are if we were able to stop the spiniing and take out the out of roundness by a (say) single point tool and later grind the tyre, will I not be quicker?
I would appreciate your comments on my queries above.
Regards,
Prem
Kiln _ Tyre on rotating Drum
