Rice King The Amazing Rice Pulling Contraption

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Rice King(The Amazing Rice Pulling Contraption)

• Michael Wieck
• Derek Herring
• Jonathan Rogers
• Colin Shipley

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Problem Statement

• Design a devise that will move rice from the
  bottom of a ramp to the top of a ramp.
• The devise has to deposit the rice into a 3 x
  3 hole at the top of the ramp.

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Possible Solutions

• Sliding Bag and Pulley System
• Lever Arm Design
• Rolling Cart and Pulley System

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Design Criteria
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Design Criteria
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Sliding Bag and Pulley

• Use simple gear/pulley ratio
• Ramp at top
• Rip bag to deposit rice
• Cheap Material
• Can modify container to hold maximum
• Simple

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Design Pictures
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Engineering Analysis

• Low friction
• Simple (the simplest solution is usually the
  best)
• Less points of failure
• No complex pulley system
• Repeatable Results

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Math Model
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Cost Analysis

• Cardboard 0.14
• Duct Tape 0.07
• Paper bag (x2) 0.02
• Dowel Rods 0.35
• String 0.36
• Hot Glue Sticks 0.18
• Wire Hanger 0.16
• Total 1.29

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Performance Analysis

• First Run 3.01 lbs
• Second Run 0.00 lbs
• String lengthened at release point, preventing
  release
• Cost/Weight - .43 /lb

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Final Scoring

• Highest Average Weight Moved 5.5 lbs
• Minimum Average Cost/Weight 2.0 /lb
• Final Score 10793 pts.
• A 3950 pts.

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Successful Test Run
Video Doesnt function, it is posted online.
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Design Improvements

• Square knot on release string to prevent
  lengthening of release point
• Bigger release opening on bag
• New taping strategy used on bag

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Recommendations

• Effective design
• Cost Efficient
• Effective load capacity
• Not prone to failure
• Repeatable results
• Easily Manufactured (1hour total build time)
• Simple

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Lessons Learned and Conclusions

• Check final designs for wear and tear before
  competition
• Time management is key with group projects
• Division of labor is wise once final design has
  been chosen
• Choose one main goal and perfect it
• Understand all design parameters
• The simplest solution is usually the best

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All Hail the Rice Kings
Any Questions?