squeakychair

Reuploaded

This sounds like a workbook problem, but I'm actually encountering it at work! In this conveyor belt configuration, rollers P and R are horizontally aligned, while rollers R and S are vertically aligned, in a triangular arrangement. Roller Q then bends the belt between P and S. Roller Q is free to slide vertically, while roller P slides horizontally. The remaining rollers R and S are fixed to their position. Of course all the rollers rotate with zero friction to allow the belt to move. The system is in static equilibrium, held together by an applied horizontal force Fp at P and vert

Hi everyone, I would like some validation on my calculations of the required torque and power for a motor to drive a heavy but slow conveyor belt assembly. I feel that I may have underestimated these values significantly. Method of driving: Motor pinion drives a large roller via a internal ring rack-and-pinion transmission, with the pinion acting as the only (driving) internal gear and the large roller acting as the (driven) ring gear. System: This is a conveyor belt setup where the large Cement Roller (the driving pulley) drives the steel belt over a few idle steel rollers (dr