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

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Design a conveyor belt system for the Sustainability Center

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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.

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

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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

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Source: www.baldor.com Figure adapted from powerdrive.com

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Variables: Capacity Stroke Length

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COMSOL Eulers formula Pulley stress Pulley deflection Cc> Sr (Short Column)

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COMSOL Beam deflection Eulers formula Pulley stress Pulley deflection

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

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"Cherry-picking Conveyor Components to Optimize Energy Efficiency." - Facilities Green Zone. N.p., n.d. Web. 22 Oct. 2013.. "Newfield Slewing Ring Company." Slew Drive. N.p., n.d. Web. 22 Oct. 2013.. BACtalk Product Line. N.p., n.d. Web. 01 Dec. 2013. Baldor Electric Company, a Leader in Energy Efficient Electric Motors,linear Motors and Adjustable Speed Drives Industry. N.p., n.d. Web. 1 Dec. 2013.. *Belt Conveyors for Bulk Materials. 6th ed. Naples, FL: CEMA, 2007. Print.* "Welcome to Boston Gear." Welcome to Boston Gear. N.p., n.d. Web. 27 Nov. 2013..