Pulley System
Pulley System
(OP)
Hi, I am working on a rope drive system that threads sheets of paper through machines. I am trying to calculate how much horsepower the motor requires to do this. As of now I have a value of 300 hp for the motor and I think this is a bit too high. Can you guys give me some tips on how to solve this problem.
Thanks
Thanks





RE: Pulley System
Can we have the technical details ie:- size of rollers, number of rollers, and details of the rope drive ie ratio's etc and then I may be able to help you.
regards
desertfox
RE: Pulley System
RE: Pulley System
1.) Calculate the amount of work to be accomplished by determining how many pounds/minute of paper that must be moved. See if you can correlate this to a HP by some creative thinking.
2.) Consider tension or compression forces (which ever the case) required to pull or push the paper and convert that to HP based on speeds, forces, RPM's, etc.
RE: Pulley System
RE: Pulley System
1)Calculate I=0.5mr^2 for each pulley
2)Added up all the I
3)Calculated acceleration for each pulley
4)Calculated required torque using I X acceleration =torque
5)Divided torque by the radius of the pulley (to get a force)
6)used hp=FV/33000 to get my horsepower
RE: Pulley System
RE: Pulley System
Cheers
Greg Locock
RE: Pulley System
RE: Pulley System
RE: Pulley System
RE: Pulley System
RE: Pulley System
RE: Pulley System
RE: Pulley System