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Re: frame gantry crane mobile hoist for small workshop

prova questo Attachment 1726948

Attachment 1726949

Attachment 1726950
if you put the keyword gantry crane homemade DIY on the net, something should come out of the test.

Re: frame gantry crane mobile hoist for small workshop

guys sorry if i disturb, some user friend could provide me some details to build a small steel frame to make a small crane hoist for my small blacksmith shop thank you.

Re: frame gantry crane mobile hoist for small workshop

I believe that the weight must be calculated between that of the structure, the load to be lifted divided by the number of feet of the pillars, am I wrong? Has any friend of the forum user made one to take an example and to use as a source of inspiration?

Re: frame gantry crane mobile hoist for small workshop

75x75x6 is adequate too. 3tonnes is serious weight. 100x100 will hold much more than 4tonne. It will resist any abuse. There's no kill like overkill.

Re: frame gantry crane mobile hoist for small workshop

I think the square boxes 100x100 mm resist like 4000kg columns if I have done the exact calculations, my doubt is about the base crosspieces on which to bolt the wheels. the doubt is also about the diagonal reinforcements. I think 50 cm from the beam-column junction I should add some dunes but I have some doubts, would you have some photos some drawings with this additional detail, I cannot find references in the manual books thanks. I have strong doubts about how to reinforce the frame of the structure.

https://www.oppo.it/tabelle/profilati-tubi-rettang.htm
https://www.oppo.it/tabelle/profilati-tubi-quadri.htm

https://www.oppo.it/tabelle/a_elenco_tabelle.html

Re: frame gantry crane mobile hoist for small workshop

I want to tell you about my experience with I-beams. I wanted to build a 4,000kg monorail in my workshop. For reference I attach an Australian steel chart for Universal Beams.

Attachment 1726791

I did my load calculations and chose the 250UB 31.4kg/m I-beam. Made up a detailed drawing and presented it to a structural engineer to check. He said the calculations were correct for normal top loading of the beam. However, a beam crawler (or trolley) loads the bottom flange which would fail under the 4T load which would then fall (because the wheels are close together). He made me use a 310UB 46.2kg/m I-beam which has an 11.9mm flange, and then only on the proviso I would use two beam crawlers and two chain hoists at least 1m apart for full 4T loads.

I believe your proposed 200mm I-beam is inadequate for 3T loads on a beam crawler. I think you should go to a beam with 12mm flanges in this case.

Any of the leg designs are good if you use 100x100x6 square tube but you must have either gussets or corner braces up top.

Wheels are fine as long as they are rated for minimum 1T each. Don't get little wheels, they are a pain in the ***. Get at least 150mm wheels.

If you are not a first class or certificated welder, you should not attempt this project yourself. Hire a welder who is.

Re: frame gantry crane mobile hoist for small workshop

exactly I would like to put a 150 cm H ipe beam in the center I can load, 2000kg, from 180 mm I can load 2500kg, from 200 mm I can load 3000 kg, the hoist I hook it up with a mobile push trolley sells it the shop from which I will buy the chain hoist and wheels.


http://mtf-ferro.it/wp-content/uploa.../04/Pag.10.pdf

https://www.oppo.it/tabelle/profilati_hea.htm

https://www.oppo.it/tabelle/profilati_inp.htm

https://www.oppo.it/tabelle/carico_flessione_ipn.htm

http://www.normotech.com/schede/05/05010204.html

Re: frame gantry crane mobile hoist for small workshop

Steel Beams Sizes (“I” Sections IPE/INP)
Steel beams IPE/INP are a very commonly used type of steel profile. Beams, otherwise called “I” sections, continental beams, or IPE/IPN, are available in multiple material grades, the most common are EN 10025 S275 and S355.


I believe its what we call H-beam, I can't read the drawing in the original post, he's using metric in next post. OP maybe located in EU and is quoting continental standard beams. I think the "Railway track" is a translation thing, I don't think he means "Railroad Track" hopefully . I think Woz may have a valid point, IPE 160 beam is a 6" tall x 3" wide beam with a 5mm(+3/16") web thickness. I think thats a little small for 3 ton.

Forse Italiano ?

Ciao !

Re: frame gantry crane mobile hoist for small workshop

Originally Posted by Woznme

You've got much bigger problems than the legs if you think you are going to use a 160mm I-beam for a 3ton load. More tomorrow when I'm in my office.

Also you have not answered the question how you are intending to attach the load to the beam. Beam crawler, wrap a chain around the beam. How?

He has more problems than that,, what he actually says is,,,

"as a crossbar I thought of a 160 mm steel beam H-type rail type railway track"

So, he probably plans to use an old piece of recycled railroad track,,

The words " railway track " kinda get lost in the way he typed it,,

Re: frame gantry crane mobile hoist for small workshop

You've got much bigger problems than the legs if you think you are going to use a 160mm I-beam for a 3ton load. More tomorrow when I'm in my office.

Also you have not answered the question how you are intending to attach the load to the beam. Beam crawler, wrap a chain around the beam. How?

Re: frame gantry crane mobile hoist for small workshop

Attachment 1726766Attachment 1726766


Attachment 1726767

my problem is to configure the legs of the gantry crane, the conformation, the section and the type, tubular or profiled, even the base crosspieces where to install the wheels, as a better configuration as a gantry with 4 legs or a portal with 2 side columns. as a crossbar I thought of a 160 mm steel beam H-type rail type railway trackAttachment 1726768

Re: frame gantry crane mobile hoist for small workshop

Anch'io avrei problemi di sollevamento, avrei bisogno di un dispositivo adeguato, anche di una bolletta rudimentale, per aiutarmi a sollevare e movimentare carichi pesanti.

Re: frame gantry crane mobile hoist for small workshop

OK OK, I looked it up, there are 2240 pounds in a Ton. One pound is 454 grams (I remember that because it's the same number as my favourite big block). That makes 3Ton = 3050kg. So no biggie.

So if the OP can answer my other two questions we might be getting somewhere. He hasn't been back so I'm loosing interest fast.

Re: frame gantry crane mobile hoist for small workshop

Originally Posted by 12345678910

Not that important ? 10% difference between 2,000 pounds and 1,000 kilos

If all his other measurements are in metric cm and m, why do you think he's using imperial weight ?

Trouble is metric weight is spelt Tonnes, he spelt it Tons which is the imperial spelling. I don't like to assume in these circumstances. Easy cleared up if he would bother to answer the question (and other questions).

Also I don't know off the top of my head what the difference is between Tonne and Ton. When I was a kid I'd remember how many pounds in a Ton. That was a long long time ago. These days I have to smile when I poop so I can remember which end to wipe when I'm done.
I'd have to look it up, or maybe the OP can clear it up by answering the question.

Re: frame gantry crane mobile hoist for small workshop

Check out Wallace Gantry . https://www.wallacecranes.com/products/gantry-cranes/

Re: frame gantry crane mobile hoist for small workshop

I didn’t read this thread too closely but will say I built the one on Weld.com. Works great to lift truck and Jeep bodies (not all that heavy). It is on wheels and has a chain hoist. Might want to take a look at it on YouTube.

Re: frame gantry crane mobile hoist for small workshop

Originally Posted by Woznme

Yes I figured that. If you want us to help you, you're gonna have to give us some dimensions. And I'll ask the question again, is your max load given in metric or imperial units?

Not that important ? 10% difference between 2,000 pounds and 1,000 kilos

If all his other measurements are in metric cm and m, why do you think he's using imperial weight ?

Re: frame gantry crane mobile hoist for small workshop

Originally Posted by filetobeef

assuming it's 3000kg or 6600 lbs since his drawings are all metric.

Trouble is metric weight is spelt Tonnes, he spelt it Tons which is the imperial spelling. I don't like to assume in these circumstances. Easy cleared up if he would bother to answer the question (and other questions).

Re: frame gantry crane mobile hoist for small workshop

Just stumbled on this picture of a gantry on the net
It looks like a good design to me.
What say the jury
Attachment 1726750

Re: frame gantry crane mobile hoist for small workshop

Originally Posted by Woznme

What are you proposing to use for the beam? Do you intend to use a beam crawler? Can you confirm your max load is metric or imperial weight.

assuming it's 3000kg or 6600 lbs since his drawings are all metric.

Re: frame gantry crane mobile hoist for small workshop

I think your original plan is plenty stout. Most people over think these things. With wheels your frame will move so should be plenty stout. What you have to watch for is it falling over if your moving it to fast and hitting something and it stopping suddenly. My own shop A frame is no where near as stout built as the one in your drawings and I've had well over a ton on it.

Re: frame gantry crane mobile hoist for small workshop

Yes I figured that. If you want us to help you, you're gonna have to give us some dimensions. And I'll ask the question again, is your max load given in metric or imperial units?

Re: frame gantry crane mobile hoist for small workshop

ipe H-beams measure in mm, or tubular for the legs, for the crosspiece certainly H-shaped steel beam

Re: frame gantry crane mobile hoist for small workshop

What are you proposing to use for the beam? Do you intend to use a beam crawler? Can you confirm your max load is metric or imperial weight.

Re: frame gantry crane mobile hoist for small workshop

Lateral buckling/sway failure thus demonstrated

Attachment 1726697