Southeast Engineering Center DCPD – John Deere/PTC University of Illinois Phase 2 Final Presentation

Southeast Engineering Center Overview HandiGator –Easy Access for Handicapped person into seat Goals/Problem Statement Process Design Recommendations AUV Gator –Steering in Water Steering Lever Rudder Assembly

Southeast Engineering Center 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 HandiGator

Southeast Engineering Center HandiGator Process 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 Step 1) Find maximum distance that chair can be translated away from vehicle without tipping the vehicle

Southeast Engineering Center HandiGator Step 2) Ideas ∙sliding rail, rotating seat ∙ three bar linkage seat ∙ translating, rotating seat, lower/raising circular seat

Southeast Engineering Center 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 F L L D   AxAx AyAy BxBx ByBy 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 , F-angles

Southeast Engineering Center HandiGator Design

Southeast Engineering Center HandiGator

Southeast Engineering Center HandiGator

Southeast Engineering Center HandiGator Recommendations for Next Semester 1)Finalize power specifications 2)Find parameters for cylinder 3)FEA on design, make improvements 4)Create a BOM

Southeast Engineering Center Steering in Water AUV Gator ∙Engaged when in water, but disengaged when out of water ∙Unobtrusive to the chassis design

Southeast Engineering Center AUV Gator ∙ Lever ~ Engaging the Rudder System ∙One easy to use devise ∙Central location ∙Unobtrusive to the chassis design

Southeast Engineering Center AUV Gator Rudder Assembly Parameters: ∙ Find required surface area to turn with in 15? Ft ∙ Not restrict ground clearance ∙ Optimized flow from propulsion system

Southeast Engineering Center Scaling for Boat Rudder Data Data for Average Water Cruiser Dimensions: Length: 18’6”Width: 7’6” 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. AUV Gator

Southeast Engineering Center Rudder design AUV Gator

Southeast Engineering Center Recommendations for Next Semester AUV Gator 1)Define component placement on finished Chassis design 2)Define lengths of cables, and proper position on lever 3)FEA on design, make improvements 4)Create a BOM

Southeast Engineering Center General Recommendations 1)Use project link to its full capacity 2)More timely support from sponsors 3)Stronger definition of goals for each team

Southeast Engineering Center Questions?