DCPD John DeerePTC

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DCPD John Deere/PTC

• University of Illinois
• Phase 2 Final Presentation

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Overview

• HandiGator
• Easy Access for Handicapped person into seat
• Goals/Problem Statement
• Process
• Design
• Recommendations
• AUV Gator
• Steering in Water
• Steering
• Lever
• Rudder Assembly

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HandiGator

• Goals/Problem Statement
• To design a modular chair lift to aid a
  handicapped person getting into and out of a John
  Deere Gator
• Design Parameters
• Mechanized power
• Translate the chair outside the vehicle
• Lowered and rotated for easy entry
• Return to operating position
• While minimizing cost

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HandiGator
Process
Step 1) Find maximum distance that chair can be
translated away from vehicle without tipping the
vehicle
x- Maximum seat bar distance FCM- Force of the
gator at its center of mass A- Location of tire,
where moments are taken from FPerson- Force of
person For 6X4 Gator Assuming 4X2 gator weighs
1000lb
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HandiGator
Step 2) Ideas
sliding rail, rotating seat three bar linkage
seat translating, rotating seat,
lower/raising circular seat
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HandiGator
Step 3) Power Requirements Place the
hydraulic/electric cylinder from the existing
Gator bed lift kit in a position to raise and
lower the chair Specifications of cylinder have
not been found, but calculations of requirements
have been finished
P-weight of person L-length of bar D-width of
seat F-required force from cylinder Ax, Ay, Bx,
By-force from hinge on bar X, F-angles
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HandiGator
Design
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HandiGator
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HandiGator
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HandiGator
Recommendations for Next Semester

• Finalize power specifications
• Find parameters for cylinder
• FEA on design, make improvements
• Create a BOM

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AUV Gator

• Steering in Water

Engaged when in water, but disengaged when out
of water Unobtrusive to the chassis design
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AUV Gator
Lever Engaging the Rudder System
One easy to use devise Central
location Unobtrusive to the chassis design
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AUV Gator
Rudder Assembly
Parameters Find required surface area to turn
with in 15? Ft Not restrict ground clearance
Optimized flow from propulsion system
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AUV Gator

• Scaling for Boat Rudder Data

Data for Average Water Cruiser Dimensions
Length 186 Width 76 Weight 2650 lbs dry,
3850 lbs wet Average Speed 20 mph Rudder Size
5 ¾ x 12 By looking at this data, although the
sizes are different draft in the water is
approx. the same as it will be for the Gator, and
Top Speed as well as Weight is almost exactly 4
times that of the goal estimate for the gator.
Because of this similarity, a rudder of the same
size will work well for the gator. With this
conclusion, it was deemed best to put two rudders
on the gator, one behind each tire to maximize
steering ability and storability when not in use.
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AUV Gator

• Rudder design

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AUV Gator
Recommendations for Next Semester

• Define component placement on finished Chassis
  design
• Define lengths of cables, and proper position on
  lever
• FEA on design, make improvements
• Create a BOM

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General Recommendations

• Use project link to its full capacity
• More timely support from sponsors
• Stronger definition of goals for each team

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Questions?