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Fall 2004 GALE Design Project . Advisor: Dr. Sundar Krishnamurty Team Members: Sean Pringle Tim Smith Brian Swearengin. Introduction. Project Goal: Design a wheelchair lift and storage device for the John Deere Gator to make it handicap accessible and functional. Prototype Criteria:

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Fall 2004 GALE Design Project

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Fall 2004 gale design project l.jpg

Fall 2004 GALE Design Project

Advisor: Dr. Sundar Krishnamurty

Team Members:

Sean Pringle

Tim Smith

Brian Swearengin


Introduction l.jpg

Introduction

  • Project Goal:

    • Design a wheelchair lift and storage device for the John Deere Gator to make it handicap accessible and functional.

  • Prototype Criteria:

    • Modular, low cost (<$500), safe, effective, and maximize bed utility and functionality.


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Assumptions

  • Maximum wheelchair weight is approximately 50 lbs

  • User has use of both arms and hands

  • Used on John Deere 6x4 Gator

  • User will not have the wheelchair stored when tipping bed.

  • Folding wheelchair is used.

  • User can reach 1.5 feet behind on the driver side of the gator.


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Overview of Design

  • Clamp

  • Lower Swing Arm

  • Hinge

  • Mounting Frame

  • Actuator

  • Slider Frame


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Geometry Calculations

Lower Swing Arm


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Geometry Calculations

Actuator Placement


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Applied Force Changes


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Finite Element Analysis

Clamp


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Finite Element Analysis

Lower Swing Arm


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Prototyping


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Prototyping


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Prototyping


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Possible Improvements and Add-ons

  • Level with bed rails

  • Reduce power requirements and motor placement

  • Assistive Springs / Shocks

  • Implement limit switches

  • Multi-use Functionalities

  • Automation controls


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Implemented

ProE

ProMechanica

Engineer Equations Solver (EES)

ANSYS

Would have liked to implement

ProMotion

Windchill

Groove

Resources


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Conclusion

  • Design met all criteria therefore is a success

    • Prototype works

    • Improvement over previous semester’s design

    • Design is universal

    • Low cost (Prototype <$500)

    • Maximizes bed space


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Acknowledgements

  • UMass Amherst

    • MechE Metal Shop

      • Miles Eastman, Rick Winn, Rick Mascenowski

    • Prof. Krishnamurty, Prof. Rinderle

  • GaTech: Tord Dennis, Bobby Henebry

  • PTC: Melissa Botto

  • John Deere: Tom Hill, EJ Smith


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Questions?


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