1. Likus Engineering Group Georgia Institute of Technology ME 4182 7 June 2000 Gwyneth Smith Philip Reale Matthew Berrell Justin Disney Lisa Smith Anthony Godfrey

2. Presentation Overview Most Viable System Motor Alternatives –Type –Power Source Frame Alternatives Pulley System Carriage System Frame Attachment

3. Most Viable System Overall View - 3 StoriesDetail View - Underside Winch Motor Adjustable Frame

4. Most Viable System Incorporates the Following: –DC Winch Motor –Custom Fabricated, Adjustable Frame –Dual Drive Pulley System –Multiple Lift Point Carriage –Hooks with Half Pipes Frame Attachment

5. Motor Selection - Type Winch Type (3 alternatives) –Pros Inexpensive Geared For Application –Cons Mainly DC powered Industrial Motor (3 alternatives) –Pros Designed for Continuous Duty –Cons Expensive Excess Capacity

6. Motor Selection – Power Source AC 1/3 Phase (2 alternatives) –Pros Durability Common Power Supply (single phase) –Cons Inefficient Safety (3 phase) DC (1 alternative) –Pros Adjustable Speed High Starting Torque Many Available Models –Cons Requires Rectifier Decreased Reliability

7. Frame Alternatives Preliminary Drawings Fixed Angle Iron FrameAdjustable Angle Iron Frame Uni-Strut Adjustable Frame with Basket

8. Frame Alternatives Custom Fabricated (3 alternatives) –Pros Design Specific Adjustable Inexpensive –Cons Labor intensive Pre-Fabricated (1 alter. UniStrut) –Pros Easy to Assemble –Cons Expensive

9. Pulley System Preliminary Drawings Two Bar System Four Pulleys Two Fixed Cables Boom CraneTrack

10. Pulley System Dual Drive (2 alternatives) –Pros Improved Stability & Weight Distribution –Cons Requires Power Transfer System Four Point Lift (3 alternatives) –Pros Simplicity –Cons Safety

11. Carriage Preliminary Drawings Two Cable Four Cable with Spacer Four Cable Four into One Deep Basket

12. Carriage Single Lift Point (2 alternatives) –Pros Easily Configured –Cons Safety Multiple Lift Points (3 alternatives) –Pros Stability –Cons Requires Support Structure

13. Frame Attachment Hooks (1 alternative) –Pros Secured in Two Axes –Cons Flexibility Half-Pipes (1 alternative) –Pros Can Be Mounted in Various Configurations –Cons Two Degrees of Freedom