R The Hoistinator The Hoistinator Sophomore Clinic Design Project Rowan University

ME ROWAN 2 R Design Problem Design, analyze, fabricate, and test an overhead crane to lift heavy weights.

ME ROWAN 3 R Primary Specifications To lift a weight, quickly:  >400 lbs,  >24 inches in elevation  < 4 seconds Weight = 70lb Diameter = 24”, Thickness = 0.5” # of plates = 20 Up to 1400lb!

ME ROWAN 4 R Main Crane Column  Main Crane Column  6” construction- grade I beam  Structural steel  0.5” pin-holes 2” apart along edge  Base  Structural steel  C-channel

ME ROWAN 5 R Crane Pivot & Stopper Pivot axis Column Stopper

ME ROWAN 6 R Pick-up Reel  Diameter = 3”

ME ROWAN 7 R Pulley  Diameter = 6”

ME ROWAN 8 R Timer Circuit  Your design must include a timer circuit capable of measuring and displaying weight lift time during the 24-inch travel from the initial elevation to the final elevation.  An official time circuit will be used simultaneously

ME ROWAN 9 R Structural Materials  Aluminum  75 in 3 of 2024-T3 in various sizes  No dimension exceeding 48”  Plastic  50 in 3 of TIVAR UHMW in bar stock  Volume constraint is measured before any drilling or other material removal operation, i.e., pre-machined

ME ROWAN 10 R Miscellaneous Supplies  Miscellaneous supplies such as pulleys, pins (with pulley spacer blocks and shims), nuts, bolts, and other minor parts will be available.  Tools will be supplied, but it will be more convenient if you carry your own.  You will be able to use project lab.  You will use various machines to fabricate the parts.

ME ROWAN 11 R Performance Formula  P: Performance Index  W: Weight being lifted  h: Height reached  t: Official time  t m : Time measured with your timer circuit  LCA: Life Cycle Assessment Eco-indicator points  PW: Present worth

ME ROWAN 12 R Important Dates  Sept. 30: Preliminary Design Proposal  Oct. 14: Machining Starts  Dec. 2: Preliminary Testing  Dec. 9: Final Testing!

ME ROWAN 13 R A Background Survey ?