1. INTRODUCTION ADJUSTABLE MECHANICAL STILTS INTRO PROBLEM DESIGN TESTING
DESIGN REQ
BUDGET
CONCLUSION

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

3. PROBLEM CURRENT STILTS:
INTRO
CURRENT STILTS:
Used for tasks requiring small rises in elevation
Difficult to get stilts on
Difficult to adjust
Difficult to pick up objects
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

4. PROBLEM THE ORIGINAL STILTS INTRO PROBLEM DESIGN TESTING DESIGN REQ
BUDGET
CONCLUSION

5. PROBLEM
INTRO
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

6. DESIGN LIFTING DEVICE: THE SCISSOR LIFT Fabrication Snap rings
INTRO
PROBLEM
Fabrication
Snap rings
Bushings
Spacers
Operations
Sliders
Pivots
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

7. DESIGN LIFTING DEVICE: THE SCISSOR LIFT 4 lockable heights
INTRO
PROBLEM
4 lockable heights
15 inches of extension height available
Height from ground to foot:
Min = 8”
Max = 23”
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION
15”

8. DESIGN LOCKING MECHANISM: “LOCKED” “UNLOCKED” INTRO PROBLEM DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION 3
EXTENDED POSITION 1 2
INTERMEDIATE POSITIONS
CLOSED POSITION

9. DESIGN GAS SPRING DAMPER: INTRO PROBLEM
Purpose: to overcome friction loss
Damper applies continuous extending force
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

10. DESIGN LATERAL LEG SUPPORT: INTRO PROBLEM DESIGN TESTING DESIGN REQ
BUDGET
CONCLUSION
Provides lateral stability
Ankle support
Extends with top foot plate

11. TESTING DIMENSION VERIFICATION:
INTRO
PROBLEM
Several design requirements based on physical dimensions and weight
DESIGN
TESTING
DESIGN REQ
Dimension
Length
Base Width
Max Width
Max Height
Average
12”
4.25”
6.8”
23.075”
BUDGET
CONCLUSION
Dimension
Upper Step
Lower Step
Closed Height
Weight
Average
19.825”
15.425”
7.875”
13.8 lb

12. TESTING STRAIN GAUGE TESTING: Strain gauge installation
INTRO
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION
Strain gauge installation
DAQ and VI system
Acquires voltage readings

13. TESTING STRAIN GAUGE TESTING: INTRO PROBLEM DESIGN TESTING DESIGN REQ
BUDGET
CONCLUSION

14. TESTING STRAIN GAUGE TESTING: INTRO PROBLEM DESIGN TESTING DESIGN REQ
BUDGET
CONCLUSION

15. TESTING FINAL PRODUCT VIDEO: INTRO PROBLEM DESIGN TESTING DESIGN REQ
BUDGET
CONCLUSION

16. DESIGN REQ. Stilts can be attached in the ‘collapsed’ position.
Stilts must be able to extend 12” above the ‘collapsed’ position height.
Operator can walk on stilts while in the ‘extended’ position.
Operator must be able to extend and contract the stilts while stilts attached to operator’s feet.
INTRO
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

17. DESIGN REQ. The weight of each stilt will not exceed 25 lbs.
INTRO
The weight of each stilt will not exceed 25 lbs.
The stilts will fit foot sizes up to size 12.
The stilts will be operational for a total load of 220 pounds
Stilts will have non slip surface on the bottom to simulate normal footwear traction.
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

18. DESIGN REQ. Base of stilt will fit in 6”x14” footprint.
INTRO
Base of stilt will fit in 6”x14” footprint.
Prototype stilts will have a maximum cost of $2500
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

19. BUDGET INTRO Item Total Cost Stilts $412.50 Hardware $192.40
Aluminum Plating
$265.55
Aluminum Flat Bars $
Aluminum Round Bar $
Steel Round Bar $
Concept Prototype $
Actuator $
Locking Mechanism $
Damper
$172.40
Miscellaneous $
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION
TOTAL
$1,185.21
DECEMBER BUDGET
$1,274.16

20. CONCLUSION POSITIVE FEATURES:
INTRO
POSITIVE FEATURES:
Easy to obtain sitting and standing position while wearing stilts
Quicker to adjust heights
Safer to pick up objects
No external energy input
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

21. CONCLUSION FUTURE RECOMMENDATIONS: Reduce weight
INTRO
FUTURE RECOMMENDATIONS:
Reduce weight
Install wire-less actuator
Tuned Damper
Redesign lateral leg support
PROBLEM
DESIGN
TESTING
DESIGN REQ
BUDGET
CONCLUSION

22. CONCLUSION QUESTIONS? INTRO PROBLEM DESIGN TESTING DESIGN REQ BUDGET