INTRODUCTION MANUALLY ADJUSTABLE STILTS “Easy Lifts” INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

INTRODUCTION 2 GROUP MEMBERS Trent Hilliard Ian Juurlink Brad Poirier Mitchell Weir SUPERVISOR Dr. Marek Kujath PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION 2

PROBLEM INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

PROBLEM CURRENT STILTS: INTRO CURRENT STILTS: Used for tasks requiring small rises in elevation Difficulties: Getting on stilts Picking up objects Adjusting PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

PROBLEM GETTING UP: INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

PROBLEM PICKING UP OBJECTS: INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

PROBLEM GETTING DOWN: INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

PROBLEM INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

IDEAS LIFTING DEVICE Power screw http://forums.vwvortex.com INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION http://forums.vwvortex.com

IDEAS LIFTING DEVICE 2. One leg-lift INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

IDEAS LIFTING DEVICE 3. Hydraulic Scissor Lift www.autoliftuk.com INTRO LIFTING DEVICE 3. Hydraulic Scissor Lift PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION www.autoliftuk.com

IDEAS LOCKING DEVICE Rotary Ratchet www.wikipedia.org INTRO LOCKING DEVICE Rotary Ratchet PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION www.wikipedia.org www.istockphoto.com

DESIGN LIFTING DEVICE: SCISSOR LIFT INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

DESIGN LIFTING DEVICE: SCISSOR LIFT 1. Member Design 2. Member INTRO PROBLEM 1. Member Design 2. Member Confinement 3. Assembly Materials Aluminum Bushings Snap Rings IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

DESIGN LIFTING DEVICE: SCISSOR LIFT INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

DESIGN LOCKING MECHANISM: INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

DESIGN LIFTING DEVICE: SCISSOR LIFT INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

DESIGN LINEAR DAMPER: Gas Spring Provides upward force SAFETY feature INTRO LINEAR DAMPER: Gas Spring Provides upward force SAFETY feature PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

ANALYSIS FORCE DETERMINATION: INTRO PROBLEM IDEAS W = Force Applied   L = Length of Beam D = Location of Center of Gravity DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

ANALYSIS Stress Analysis: INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

BUDGET INTRO Item Item Cost Qty. Total Cost Stilts $365.00 1 Bearings $1.41 16 $22.56 Bushings $0.72 $11.52 Aluminum Plating $88.16 Steel Flat Bar $6.96 2 $13.92 Aluminum Flat Bars $6.30 6 $37.80 Pins $6.00 $12.00 Concept Prototype $50.00 Snap Rings $36.31 Actuator $30.00 $60.00 Locking Mechanism $74.80 Damper $100.00 PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION TOTAL (with 10% contingency) $1,274.16

SCHEDULE CRITICAL SCHEDULE ITEMS Jan/14/10: Final Drawing Submission INTRO CRITICAL SCHEDULE ITEMS Jan/14/10: Final Drawing Submission Feb/01/10: All material obtained March/01/2010: Fabrication and assembly PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

SCHEDULE CRITICAL SCHEDULE ITEMS March/22/10: Testing April/08/10: INTRO CRITICAL SCHEDULE ITEMS March/22/10: Testing April/08/10: Final report submission April/10/10: Final presentation PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

CONCLUSION WHAT’S LEFT? Fine details on locking mech. Finalize the damper force INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

CONCLUSION QUESTIONS? INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

CONCLUSION WALKING WEIGHTS: Current Stilts weight: 15.5 lbs. INTRO WALKING WEIGHTS: Current Stilts weight: 15.5 lbs. Competitor stilts: 14-17 lbs Miner’s work boots: 7 lbs Target stilt weight: <20 lbs PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE CONCLUSION

CONCLUSION INTRO PROBLEM IDEAS DESIGN ANALYSIS BUDGET SCHEDULE