Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Handi-Gator Wheel chair storage team Brian Mullen Kyle Kremer Dan Santos Sascha Reumenap Advisor: Prof. Krishnamurty

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY 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 (<$800), safe and interface with UIUC handicap entrance project.

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Flow Chart of project Overview of project Stage 1Stage 2 Definition of problem Design Criteria Research wheelchair/ other Select location Research/ benchmark (pick & place, cranes) Concept generation Lift & move Attach Concept selection Stage 3 ProE & ProMech Dimension Find vendors & products Cost analysis Final Design

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY 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

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Virtual Motion

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY 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.

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY 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

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY 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.

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Stress and Deflection Calculations Aluminum

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Stress and Deflection Calculations Steel (used for prototype)

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Penn State Design

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Advantages over Penn State’s design Safety –rigid frame and components –no rope –Wheelchair will be secure when operator transfers from wheelchair to Gator seat.

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Tools Used –ProE –ProMechanica –Engineer Equations Solver (EES) Would have liked –Ansys –ProMotion

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY PTC Project Link ProsCons

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Future work Review design Optimize Work with John Deere Part selection Cost

Southeast Engineering Center University of Illinois at Urbana-Champaign BENTLEY Acknowledgements UMass Amherst –MechE Metal Shop Miles Eastman, Rick Winn, Rick Mascenowski –Prof. Krishnamurty, Prof. Rinderle, Prof. Grosse Venders Danaher MotionRotomation GaTech: Tord Dennis PTC: Melissa Botto John Deere: