2. ME 4182 Mid-Term Presentation The Likus Group 6/21/00 Philip Reale, Group Leader Matt Berrell Justin Disney Anthony Godfrey Gwyneth Smith Lisa Smith The Likus Group

3. Problem Definition & Solution Design Concept Commercial Comparison Selection Analysis Future Goals Conclusion & Questions Presentation Overview ME 4182 Mid-Term Presentation The Likus Group 6/21/00

4. Problem Statement Scaffolding equipment Scaling the scaffold may becoming dangerously difficult when carrying items.

5. Improve the safety of workers on scaffolding equipment by improving the transport of tools up and down the scaffold. Design Idea

6. Project Design Scaffolding Attachment Framework Detail View of Underside

7. Design Components Frame Motor/ Gear Assembly Pulley System Carriage Frame Attachment Design, Fabrication, Material Skeleton of the lifting device

8. Frame Types Fixed Angle Iron FrameAdjustable Angle Iron Frame Uni-Strut Adjustable Frame with Basket

9. Design Components Frame Motor/ Gear Assembly Pulley System Carriage Frame Attachment Design, Fabrication, Material Skeleton of the lifting device Attaches frame to scaffold Hooks, Half pipes Transports materials Strength, Weight, Durability

10. Carriage Types Two Cable Four Cable with Spacer Four Cable Four into One Deep Basket

11. Design Components Frame Motor Assembly Pulley System Carriage Frame Attachment Design, Fabrication, Material Skeleton of the lifting device Attaches frame to scaffold Hooks Transports materials Power, Weight, Safety Lifts Carriage Strength, Weight, Durability

12. Motor Types 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

13. Design Components Frame Motor Assembly Pulley System Carriage Frame Attachment Design, Fabrication, Material Skeleton of the lifting device Attaches frame to scaffold Hooks, Half-Pipes Transports materials Power, Weight, Safety Connects Motor Assembly to Carriage Size, Weight, Strength Lifts Carriage Strength, Weight, Durability

14. Pulley Types Two Bar System Four Pulleys Two Fixed Cables Boom CraneTrack

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

16. Comparable Design Patent

17. Selection Analysis Criteria Durability: Expected life of components Stability: Stability of the payload being lifted Weight: Combined weight of the components selected Cost: Overall Cost of manufacture and keep-up of design Capacity: Amount of tolerable pay load Adaptability: Range of additional design allowance Ease of Use: Ease of machine operation Safety: Factor of improved safety over working conditions

18. Selection Analysis Property Weights Selection Results

19. Analysis of Patent Design Advantages of Patent: Advantages of Likus Design: 1. Lightweight 2. Easy to Use 1. Increased Safety; No dual axis motion 3. Durable 2. Adaptability for design accessory enhancement

20. Future Course of Action Engineering Analysis Construction of Prototype Design Layout for Fabrication

21. Closing Summary of Design Need and Solution Justification for Design Selection Question & Answer