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The Hoistinator

The Hoistinator. Sophomore Clinic Design Project Rowan University. Design Problem. Design, analyze, fabricate, and test an overhead crane to lift heavy weights. Up to 1400lb!. Primary Specifications. To lift a weight, quickly : > 400 lbs , > 24 inches in elevation < 4 seconds.

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The Hoistinator

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  1. The Hoistinator Sophomore Clinic Design Project Rowan University

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

  3. Up to 1400lb! 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

  4. 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

  5. Crane Pivot & Stopper Column Stopper Pivot axis

  6. Pick-up Reel • Diameter = 3”

  7. Pulley • Diameter = 6”

  8. 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

  9. Structural Materials • Aluminum • 75 in3 of 2024-T3 in various sizes • No dimension exceeding 48” • Plastic • 50 in3 of TIVAR UHMW in bar stock • Volume constraint is measured before any drilling or other material removal operation, i.e., pre-machined

  10. 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.

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

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

  13. A Background Survey ?

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