HandiGator Wheel chair storage team

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Handi-Gator Wheel chair storage team

• Brian Mullen
• Kyle Kremer
• Dan Santos
• Sascha Reumenap
• Advisor
• Prof. Krishnamurty

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Introduction

• Project Goal
• Design a wheelchair loading/unloading and storage
  device for the John Deere Gator to make it
  handicap accessible and functional.
• Project Criteria
• Modular, low cost (lt800), safe and interface
  with UIUC handicap entrance project.

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Flow Chart of project
Stage 1
Stage 2
Stage 3
Overview of project
Final Design
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Overview of design

• 2 Major Components
• Wheelchair mounting rack.
• 3 point fastening of frame
• prevention of seat unfolding
• Wheelchair pick and place mechanism
• lifting rotation
• loading/unloading
• storage location

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Virtual Motion
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Wheelchair mounting rack

• Operator wheels backward into track until stop.
• Aligns wheelchair for securing and to enter
  Gator.
• Manually pushes down clamp and lock.
• Secures wheelchair before entering Gator.
• Fold and latch seat.
• Prevents wheelchair from unfolding.

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Lifting and rotation mechanism

• Lifting (electric linear actuator)
• Loadmaster 80 from Danaher Motion
• 1000 mm stroke
• holds ________ moment
• lifts a ________ load
• Rotation (pneumatic rotary actuator)
• name from Rotomation
• versatile control
• speed and torque depend on flow rate and psi
  respectively
• this allows for the high torque (44 in-lb), low
  speed (3 rpm) required

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Wheelchair Storage

• Located behind passenger seat in cargo bed.
• Change from original location to reduce the
  number rotations and translations of the
  wheelchair.
• Locked into place by lowering linear actuator.
• Using a load sensor, when unloading same sensor
  to stop lowering.

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Stress and Deflection Calculations
Aluminum
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Stress and Deflection Calculations
Steel (used for prototype)
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Penn State Design
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Advantages over Penn States design

• Safety
• rigid frame and components
• no rope
• Wheelchair will be secure when operator transfers
  from wheelchair to Gator seat.

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Tools

• Used
• ProE
• ProMechanica
• Engineer Equations Solver (EES)

• Would have liked
• Ansys
• ProMotion

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PTC Project Link

• Pros

• Cons

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Future work

• Review design
• Optimize
• Work with John Deere
• Part selection
• Cost

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Acknowledgements

• UMass Amherst
• MechE Metal Shop
• Miles Eastman, Rick Winn, Rick Mascenowski
• Prof. Krishnamurty, Prof. Rinderle, Prof. Grosse
• Venders
• Danaher Motion Rotomation
• GaTech Tord Dennis
• PTC Melissa Botto
• John Deere