Team John Deere Weekly Status Report Week 4

1
Team John DeereWeekly Status ReportWeek 4

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

2
Project Modification of Gator for Handicap
Accessibility

• Task assigned by John Deere is the open-ended
  modification of their six wheeled Gator Utility
  Vehicle to facilitate handicapped accessibility
• Two primary suggestions wheelchair hoisting
  mechanism and controls modification

3
Review of Previous Action Items

• Two new additions to our team from the ID
  department Wade and James
• Group meeting scheduled for Friday to meet as a
  whole and to teleconference with other schools.
  Responsibility Gary Twedt and Ben Spivey
• Designed preliminary wheelchair storage
  compartments for bed of gator.
  Responsibility James June

4
Review of Previous Action Items

• Created preliminary design possibilities for
  wheelchair hoisting mechanism.
  Responsibility Gary Twedt, Michael Reno and
  Jamari Haynes
• Designed steering wheel-controlled gas and brake
  pedals. Responsibility Josh Ebeling,
  Michael Reno and Ryan McFerrin

5
Problem Statement Hoist

• Product Idea semi-automatic hoist that lifts
  wheelchair into bed while retaining a majority of
  bed storage space.
• Functional Goals Lifting and lowering
  wheelchairs, positioning wheelchair, and
  collapsing hoist when not in use.
• Challenges robustness under moment loading
  conditions, minimize usage of cargo space

6
Side-Hinged, Gear Driven Hoist (Rotating Chair)

• Hinged device at side of bed that hooks to
  wheelchair and rotates over into the bed.
• () Used for either collapsible or
  non-collapsible chairs.
• () Fully collapsible when not in use
• (-) High torque on edge of bed and on powering
  mechanism
• (-) More space used than with collapsible chair

7
Side-Hinged, Gear Driven Hoist (Vertical Chair)

• Hinged lever arm at side of bed that hooks to
  wheelchair seat, collapses chair and rotates over
  into bed.
• () Can automatically collapses chair for less
  space
• () Fully collapsible when not in use
• (-) High torque on edge of bed and on powering
  mechanism

8
Parallel Pole, Gear Driven Hoist

• Hinged device at side and middle of bed that
  hooks to wheelchair and hoists over into the bed.
• () More robust than single arm design.
• () Can automatically collapses wheelchair.
• () Fully collapsible when not in use
• (-) High torque on edge of bed and on powering
  mechanism

9
Wench Driven Hoist

• Hinged at bottom of bed, lever picks up chair and
  places in bed.
• (i) Wench decreases torque on side of bed
• () Can be used for collapsible and
  non-collapsible chairs
• (-) Not fully collapsible when not in use

10
Crane Design

• Rotating at base of bed, crane picks chair up
  using retractable cable and rotates into place.
• () Can be used for collapsible and
  non-collapsible chairs
• (-) Not fully collapsible when not in use
• (-) Has to swing through cargo space.

11
Problem Statement Controls

• Product Idea Gas and brake hand controls that
  can be effectively operated by the user.
• Functional Goals Pushing and releasing of the
  gas and break pedals and a high amount of
  usability for the user.
• Challenges Decreasing the amount of force needed
  by the user to operate the controls by hand
  instead of foot, making the controls dependable
  and making them safe.

12
Steering Wheel Controls

• Break located in middle of steering wheel and gas
  located along wheel outer radius
• () Pushing of break utilizes high force
  capability of user
• () Gas easily accessible
• (-) Hard to control while steering

13
Motorcycle/ATV Controls

• Break by squeeze and gas by turning handlebar.
• (i) Widely used and familiar configuration.
• () Easy to break and gas while steering
• (-) Possible high squeezing force needed for
  break.

14
Lever Arm Design

• Break and gas by pulling large lever.
• () Low force required for user to operate
• () Steering wheel need not be replaced
• (-) Hands must be removed while driving

15
Project Plan

• Project Responsibility Assignment
• Group Management Gary Twedt
• CAD/FEA Support Ben Spivey
• All members will be involved with concept
  development, drawing support, report writing, etc.

16
Project Plan

• Short-term Project Timeline
• 9/15- Patent Search Completed
• 9/22- Selection Analysis
• Long-term Project Timeline
• 9/29- Mid-term Presentation
• 10/20- Engineering Analysis
• 11/24- Prototype Review Completed
• 12/1- Final Project Submitted

17
Current Action Items

• Conduct patent/product search for products
  similar to wheelchair hoist. Responsibility All
  team members
• Perform a selection analysis on the five best
  designs, possible using the evaluation matrix
  technique.