r the hoistinator the hoistinator sophomore clinic design project rowan university
Post on 19-Dec-2015
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RR
The Hoistinator The Hoistinator
Sophomore Clinic Design Project
Rowan University
ME • ROWANME • ROWAN 22
RR Design ProblemDesign Problem
Design, analyze, fabricate, and test an overhead crane to lift heavy weights.
ME • ROWANME • ROWAN 33
RR Primary SpecificationsPrimary SpecificationsTo 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!Up to 1400lb!
ME • ROWANME • ROWAN 44
RR Main Crane ColumnMain 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 • ROWANME • ROWAN 55
RR Crane Pivot & StopperCrane Pivot & Stopper
Pivot axis Column Stopper
ME • ROWANME • ROWAN 66
RR Pick-up ReelPick-up Reel
Diameter = 3”
ME • ROWANME • ROWAN 77
RR PulleyPulley
Diameter = 6”
ME • ROWANME • ROWAN 88
RR Timer CircuitTimer 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 • ROWANME • ROWAN 99
RR Structural MaterialsStructural 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
ME • ROWANME • ROWAN 1010
RR Miscellaneous Supplies 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 • ROWANME • ROWAN 1111
RR Performance FormulaPerformance 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
PWLCAt
tthWP
dp
m 435*
5.31
24400
ME • ROWANME • ROWAN 1212
RR Important DatesImportant Dates
Sept. 30: Preliminary Design Proposal Oct. 14: Machining Starts Dec. 2: Preliminary Testing Dec. 9: Final Testing!
ME • ROWANME • ROWAN 1313
RR A Background SurveyA Background Survey
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