Team John Deere MidTerm Presentation Week 7

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Team John DeereMid-Term PresentationWeek 7

• Josh Ebeling
• Jamari Haynes
• James June
• Mike Reno
• Ben Spivey
• Gary Twedt
• Wade Burch

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Project Objectives

• The objective of this design project is the
  creation of a kit-ready modification to the pedal
  controls of the John Deere Gator Utility Vehicle
  in order to facilitate accessibility by those
  unable to perform current use

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Project Parameters and Constraints

• Task assigned by John Deere is the open-ended
  modification of their six wheeled Gator Utility
  Vehicle to facilitate handicapped accessibility
  (2,000 budget)
• Primary Suggestions
• Wheelchair hoisting mechanism
• Controls modification - primarily foot pedals

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Project Details

• Project coordinated through John Deere in
  conjunction with UMass (wheelchair hoisting
  mechanism) and UIUC (sliding drivers seat)
• Mechanical Engineering students charged with
  design and construction of prototype, with
  Industrial Design students aiding in overall
  ergonomics of new system, and some modeling help
  from students in AutoCAD class

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Preliminary Conceptual Designs

• Two main conceptual design modes

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Preliminary Conceptual Designs

• Two main conceptual design modes
• On- or near-steering wheel controls

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Preliminary Conceptual Designs

• Two main conceptual design modes
• On- or near-steering wheel controls
• Triggers located behind steering wheel

Motor
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Preliminary Conceptual Designs

• Two main conceptual design modes
• On- or near-steering wheel controls
• Bicycle-type brake handles on steering wheel

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Preliminary Conceptual Designs

• Two main conceptual design modes
• On- or near-steering wheel controls
• Pivoting lap bar located below steering wheel

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Preliminary Conceptual Designs

• Two main conceptual design modes
• Throttle lever controls

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Preliminary Conceptual Designs

• Two main conceptual design modes
• Throttle lever controls
• Throttle lever with pivot bar

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Preliminary Conceptual Designs

• Two main conceptual design modes
• Throttle lever controls
• Throttle lever with pivot bar

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Current Market Availability

• Current industry standard and most prevalent
  design is the Braun 3500 Hand Control
• Easily integrated for a variety of car sizes and
  types
• Less than desirable required dexterity and force
  to operate

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Conceptual Design Selection

• Evaluation matrix of conceptual designs
  constructed using Braun 3500 as a baseline

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Ultimate Design Selection

• Ultimately selected some variation on the
  throttle lever with pulley
• Most ergonomic and greatest opportunity for
  decreasing force necessary for operation
• Easiest to facilitate normal use while
  modification remains intact

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Design Mock-Up
Design Prototype MockupAvailable for
demonstration
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Further Project Challenges

• Integration of throttle bar into convenient and
  ergonomic location on Gator
• Uneven pedal depression paths
• Design must remain easy to install and put in and
  out of operation

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Questions?