Posted by RodInNS on December 19, 2008 at 08:43:02 from (216.118.158.123):
In Reply to: Re: Gantry crane posted by 135 Fan on December 18, 2008 at 22:34:10:
Yes, I beleive braces like that would strengthen it up a lot. The only concern I'd have with that is you'd be limiting the travel of the chain falls along the beam if I understand you correctly? I've seen various lighter gantry type cranes that have a truss span over the main beam. Basically they use a piece of flat bar welded down at each end, and then vertical columns across the width of the span to give height to the arch. It's a very simple design. It's simply keeping the top chord in tension to gain strength.
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