ET 494 Spring 2014 Advisor: Dr. Ma Instructor: Dr. Koutsougeras Southeaster Louisiana University Mechanical Engineering Undergraduate

 Design a conveyor belt system for the Sustainability Center

 Dusty environment  Exposure to heat from the boiler  Back burn  Pellet overflow/underflow  Danger of moving parts with high torque  Belt slip or misalignment  CEMA, ANSI, OSHA, etc.

Requirements: Required Power Pulley Speed Required torque Standard Motor power Motor Rpm Gear Ratio

Variables: Ratio: Number of teeth /Number of threads Speed Reduction Torque Increase Worm Gear Diametric Pitch (in)8 Worm MaterialSteel Worm Gear MaterialCast Iron Double thread Ratios10:1 to 30:1 Worm gear (steel - bronze) Pitch Diameter (in)6 Double Threaded Gear ratio (min) 10:1 to 20:1 Quad Threaded Gear ratio (min) 4:1 to 10:1

Source: Figure adapted from powerdrive.com

Variables: Capacity Stroke Length

COMSOL Euler’s formula Pulley stress Pulley deflection Cc> Sr (Short Column)

COMSOL Beam deflection Euler’s formula Pulley stress Pulley deflection

 Electrical Efficiency  Feedback systems ◦ Safety ◦ Motor control ◦ Elevation control ◦ Monitor feed (input/output) ◦ Temperature

 "Cherry-picking Conveyor Components to Optimize Energy Efficiency." - Facilities Green Zone. N.p., n.d. Web. 22 Oct  "Newfield Slewing Ring Company." Slew Drive. N.p., n.d. Web. 22 Oct  BACtalk Product Line. N.p., n.d. Web. 01 Dec   Baldor Electric Company, a Leader in Energy Efficient Electric Motors,linear Motors and Adjustable Speed Drives Industry. N.p., n.d. Web. 1 Dec  *Belt Conveyors for Bulk Materials. 6th ed. Naples, FL: CEMA, Print.*  "Welcome to Boston Gear." Welcome to Boston Gear. N.p., n.d. Web. 27 Nov 