Project Report

30-foot Jib Crane for Knelson Concentrators

Introduction

Design Team George Beckingham David Wang Michael Chen

Sponsor Knelson Concentrators Ed Zonneveld, Engineering Manager

Summary

Requirements

Concepts Considered

Detailed Design Process Main Beam Primary Structure Minor Components 3D Model and Drawings

Conclusions and Recommendations

Requirements

Capacity: 1 ton Design load: 2700 lb

Length: 30 feet

Use existing hardware

Deadline

Concepts Considered

Single Tension Rod

Concepts Considered

Two Tension Rods

Concepts Considered

Truss

Detailed Design Process

FBD of crane Determine forces on building structure

Load

Reactions

Detailed Design Process

Main Beam Algor Analysis

Detailed Design Process

Main Beam Manual Calculations

Buckling load

Sy (psi)= 36000 E (psi)= 29000000K = 0.8 L (inches) = 300

Imin Area Le rmin SR Cc Pcr (lbs)

S8 x 18.4 3.73 5.41 240 0.83034 289.0383 126.0993 18534.64S8 x 23 4.31 6.77 240 0.797892 300.7925 126.0993 21416.7

S10 x 25.4 6.79 7.46 240 0.954038 251.5624 126.0993 33740S10 x 35 8.36 10.3 240 0.900916 266.3954 126.0993 41541.44S12 x 35 9.87 10.3 240 0.978904 245.1722 126.0993 49044.74S12 x 50 15.7 14.7 240 1.033454 232.2309 126.0993 78014.43

Detailed Design Process

Primary Structure Algor Analysis

Detailed Design Process

Primary Structure Manual Calculations

Location of tension rods Rod Tension

Detailed Design Process

Minor Components Connection of tension rods to beam

Clevis Clevis Mount

Detailed Design Process

Minor Components Mounting brackets

Inventor-Algor compatibility issues Manual calculations

Detailed Design Process

Minor Components Bearings

Detailed Design Process

Minor Components Welds

Between main beams Top of tension rods Clevis mount Mounting brackets

Detailed Design Process

Minor Components Pins and fasteners

Pivot pins Clevis pin Turnbuckle Bolts

Detailed Design Process

CAD as a design tool 3D Inventor model assisted in design Drawings generated from Inventor

Conclusions

All design criteria met Capacity exceeded

Most of planned work completed Cost estimate not completed

Time lost due to inexperience

Recommendations

Re-evaluate design Must be approved by P.Eng.

Increase capacity?

Recommendations2 ton load at end

Recommendations1-1/2 ton load at 7-1/2 feet

Recommendations1-1/2 ton load at 7-1/2 feet1-1/2 ton load at 20 feet

End of Project

Acknowledgements Ed Zonneveld Ken Wong

Project Report

30-foot Jib Crane for Knelson Concentrators