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Stone Guy
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369 Posts
Discussion Starter · #1 ·
I'm wanting to build a gantry crane. Needs to be 8' long and 8' high and capable of lifting 5,000 pounds.

The design is simple--two A-frames with an I beam between them and some type of winch.

I need to make sure the thing is tough enough to do what I'm asking--so, what size steel pipe to use?




If people here can help me figure that out, then I'll start considering whether or not it's too much trouble to install wheels or not...

Reason I want a crane is to be able to lift an object that is on a pallet, weighs about 2 tons, and get it on to my trailer. Trailer is 32" off the ground, object to be lifted is approximately 4' tall.

Any help?

Thanks
 

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Stone Guy
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369 Posts
Discussion Starter · #3 ·
Well I want to own a crane, for other projects, just to have one.

For this particular item I was considering finding someone who owns a backhoe with forks, a mofet, rough terrain forklift--something that can lift 4,000 pounds plus.

but even after this item is loaded, I'll still occassionally have a need for a crane, so yeah, I want to build one.
 

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Fine Handcrafted Opinions
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994 Posts
Railman said:
Our of curiosity, why not just pick up an older forklift? They can be had for well under 3k$
Am I the only one who understands that the op just has an innate need to build a crane?

The dude wants a crane for Pete's sake, not a forklift or backhoe or anything else.

I support you, crane man. Build the crane.
 

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1,300 Posts
100" long 6" I-Beam (limited by what would fit in my little trailer)
1 20 foot stick of 3" x 3/16th wall square wall tubing
2 pieces of 38" long 2.5" 1/4" wall square tubing
6 foot 1" square tubing
4 1800 pound rated wheels
2 3 ton engine hoist rams with 20" extension (on sale for $29 at HF)
misc. pieces from the scrap pile
Miller wire welder and the bandsaw for assembly

http://bbs.homeshopmachinist.net/threads/30862-Moving-Machines/page3

I just now remembered, we have one sitting in the yard, not sure of the exact dimensions but its going to be heavy duty. If your any where near Nebraska, I'd sell it to you would be cheaper and a lot less time spend on building one.
 

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Stone Guy
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369 Posts
Discussion Starter · #10 ·
Am I the only one who understands that the op just has an innate need to build a crane?

The dude wants a crane for Pete's sake, not a forklift or backhoe or anything else.

I support you, crane man. Build the crane.

Glad someone gets it.

Thanks 1985gt for the specs--exactly the sort of thing I was looking for.
 
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