This has been discussed to certain level, in the following thread :

https://forum.bulk-online.com/showth...turning+device

Regards, ■

As you can see, from the referenced thread, the topic had not been addressed as at late last year. If you are seriously concerned about the power consumption do the easy thing and eliminate the consumer. That way you won't have to worry about the unkown. ■

Originally Posted by Joessl

Dear all,

I´m analizing a belt conveyor in Beltstat V7.0 and is so clearly how to determine the lenght necessary of a turnover belt, but in the Beltstat´s Manual doesn´t mention about the power required to twist the bellt. I have noticed in my simulation (with Beltstat) that the tension doesn´t change if I consider or not a turnover belt.

And I think maybe there is a resistance due to twist the belt.

Is there a resistance due to use a "Turnover Belt" to increase a required drive power ?

If yes, is it significant?

I have been searching about it, and I have only found information about turnover lenght, but not for "turnover power".

Does Somebody know about this issue?

Regards

This has been discussed to certain level, in the following thread :

https://forum.bulk-online.com/showth...turning+device

Regards, ■

Simple answer..

The conveyor is normally quite long to warrant a turn-over, so the miniscule increase in power is negligible.

Cheers

LSL Tekpro ■

Very interesting question that I have never previously considered. In principle if you deform (twist) the belt material that is not linearly elastic (which it is not) then the return from the twisted state will have a hysterisis loop the area of which is work, per unit of time is power. Like Graham I suspect that it is negligible. In any case its effects will not be felt externally until its contact with the next pulley or the next guide roll. Thus the BeltStat program is correct in not assigning any resistance along the turnover, it will be felt at the end of the ends of the turnover. Maybe it can be handled like the CEMA Appendix C calculations for pulley resistance. This would make a nice research project and thesis for a masters degree student at the University of Newcastle.

Joe Dos Santos ■