Mobile Gantry Crane Build
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- เผยแพร่เมื่อ 7 เม.ย. 2021
- Mobile gantry crane build
I made this gantry to make machine moves easier. It features an adjustable height beam due to limited door height, and a whole lot more.
I thought with this video I'd touch on a few engineering concepts.
I forgot to mention, Being able to level the gantry to within 50 mm means that 2.4% of the weight acts sideways. ie a 1 ton load will need 24 kg sideways force to restrain it. A runaway load can be held back by hand or a rope etc. I felt this was a manageable amount
This gantry was actually finished late Feb, but I had a lot of extra work required first (concrete loading slab for example), and then other commitments.
The design is not perfect. I have improvements that I'd make in future. I might replace the bottle jacks with longer stroke jacks for faster raising
Follow me on instagram / patreon for behind the scenes and updates
All my links: linktr.ee/Tom.Make.Here
Time stamps:
00:15 Gantry Overview and top beam
1:16 Stiffeners
2:05 Making the legs
4:18 A frame assembly
5:50 Casters
6:43 Leg plates
7:00 Brackets (v1)
8:12 Bracket rework
8:57 Leg strengthening
9:32 Gantry assembly
10:14 Leg winches
11:12 Leg locking pins
12:32 Braces (v2)
14:37 Leg set screw
15:18 Fixing the winch hook
16:15 Hydraulic lifting
17:18 Leg extension (Leg-stension?)
18:10 Test lift on a mystery box
18:31 Machine Move
19:46 Final gantry feature
20:43 Outtakes and patreon shout out
Consider supporting me on patreon, where you get early access and more: / tommygmachining
Shout out to the following patreon supporters:
Sami
Nate - วิทยาศาสตร์และเทคโนโลยี
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Damn...Its so cool, so fun. Wish i could be there and mess things up with u.
It's great to finally lift stuff easily
Instead of just plugging the holes, you put pins in that ends up making it stronger. "When a design flaw turns into a feature" love it!
Let's pretend it was intentional 😂
The folding feature is fantastic. You could use this indoors moving items that aren't necessarily close to its capacity. Two people could easily move machines in confined spaces.
Super job!
Absolutely BRILLIANT!!!!!!! Finally someone consider ‘load braces’ (A-frame and top beam)!
Clever stuff, works as intended, and nicely presented, good to see you back!
Thank you! More to come!
That is so awesome. Glad to see you back!
Cheers! Good to be back, more to come!
And the flat storage position - super cool!
It's funny, I've not made use of that feature, I've put tools and machines in the way, and now the wall is not accessible 😂
Pretty darn cool if you ask me, I like the mobility of it too.
Very clever design - love the height adjustability.
Thank you!
Ripper build! Love it - so many good features!
Cheers!
Great idea with the pivot of the legs for storage.
Thanks for sharing.
Cheers! The funny thing is I've got machines in the way and have yet to make use of the storage feature!
I might do it this weekend lol
Very very nice!!! Thanks for sharing! Greetings from Valle de Bravo , México
Damn. That's one solid project. Well done. Genuinely impressive
Thank you!
What a fantastic video, thanks!! So many great ideas and some easy basic physics thrown in too. ❤
Thanks for watching!
Tom: "Thats not a gantry crane... THIS IS A GANTRY CRANE!" very awesome buildman best portable gantry ive seen
Cheers!
Glorious!
Absolutely awesome. Loved the patreon coin thingy! The gantry itself is packed with features. Makes standard ones look boring :-)
Yeah who wants a boring gantry anyway?
Great build, spot on ref weight for each caster loading, I've had a few headaches trying to explain to some people.
Great vlog thanks for sharing.
Best regards John.
Glad you enjoyed it
I would definitely weld those casters on rather than depend on the tapped threading.
So awesome
Nice gantry, well built and versatile. Gotta build me one of these. Cheers from about 370Klm's north lol
Cheers! Yeah it's useful to have!
Nice job. I like the way those slugs came out from the annular cutter. I've got to get me some of them.
Yeah they are handy. I need to add an ejector pin to my arbor. They occasionally get stuck, but are way easier to remove than with a hole saw
Impresive. Well done, sir.
Thanking you
Well planned and executed.
Cheers
I believe this is what you call overcomplicating. A simple project
Welcome to my channel 😂
It's more about learning and having fun than being efficient
Nice build, thanks for sharing.
Thanks for watching
Awesome thank you for sharing this video
Thanks for watching!
Wow. That’s a brilliant design! Love it ! And love the video’s !
Thanks!
Extend top I beam ove ends of column tubes ,put angles on outside . nice work cheers.
Certainly a reasonable approach, but it would mean making the whole gantry wider which I didn't want to do
Thanks for watching!
Very inspiring.
Thanks!
Great video, great ejection, great work!!!!
Thanks for watching!
Man I need one of these for logs and propane tanks, engines, wood stoves, and my sister in law.
lol
it's useful if you have the space
Awesome build!
Cheers! Thanks for watching
Nice job Tom good idea on the gusset design
Thanks!
very good video..thanks for your time
You are welcome
Nice work. We posted this video on our homemade tools forum this week :)
Awesome! Thank you!
Saw your parents assisting you in the load and unload, move. Please tell them from me, “You two did one hell of a job raising Tom!!!” He has a RightBrain (creative side) and LeftBrain (analytical side) going full speed! His problem resolution is STELLAR! He showed us his mistakes and then the fix and that helps us all out here very, very much! (to avoid these roadblocks). Keep posting these VERY informative videos!
great job, great execution and great images. Good boy!
Thank you!
Ditto. A/S comment.
Great build and some great innovations, cheers! I see you met Bozo! he likes to make an appearance.
Thanks. Yeah Bozo stops by every now and then ha ha
G'Day Tom, very nice job !! Keep an eye out for scaffolding base jacks (solid core ones are better) - Being adjustable, they are great for setting out temporary level bases over uneven ground for fabrication. They're also very good for work benches. Stay safe and well :)
Good idea cheers!
One thing to note I have a commercially made gantry crane 8000 pound capacity its 20 feet long 12 inch tall i beam and can be raised to 16 feet in height even though my shop has only a 14 foot ceiling. The 10000 pound capacity was 10 to 15 feet long but i wanted the longer stretch for splitting tractors. But the point i need to make is according to my owners manual for the crane it warns about the dangers of moving the crane while loaded mine is a pretty heavy unit it's hard enough to push empty so all i do is if i need to move a real heavy load i just leap frog it pick up load on one end of crane and use the trolley to move to other end set it down reposition crane to next position and do the same thing the i beam doesn't twist on you. So now in theory you can move heavy objects through a door with your setup with the swivel legs doing the leapfrog method . Nice build 👍👍
Edit and yes i have a swing chair hanging off the crane lol it just works. And also even though my crane has loose legs but when it is pinned with load on it it doesn't really wiggle and definitely enough flex to keep all 4 casters having equal weight 👁👀👁
Hello Tom,
Nice design and built... I am sure it will serve you well over the years to come...
Take care.
Paul,,
Hope so! Cheers
nice build
Thanks!
Молодец,талантливый парень.
Спасибо за просмотр!
Very nice fabrication work there 🍻👌😉
Thank you! Cheers!
GREAT ... my compliments. Regards from Florence, ITaly
Thanks for watching!
Brilliant! You can move a house with that crane.
It's certainly solid and future proofed
Very good but get yourself a pallet jack. Best thing I’ve ever bought.
I possibly will
I was lacking the means of lifting things off of trailers easily. once on the ground it's not too bad
New subscription achieved
Welcome aboard!
True Aussie Innovy :) Nice on ya mate
Thanks 👍
Awesome
Cheers!
2:42 un oh... here goes TIM THE SHIM again....good for you !!!
😂
Nice job. I bet that lovely little mill has come to your rescue, many's a time?! :)
It's a great mill with a lot of options. It is the process of being replaced by the GHA mill which is about the same size (except heavier) and even more versatile!
You should add a blue print for people to follow in case they want to do the same!
I've considered it, but different countries have different steel shapes and grades. Plus there is a fair bit of liability
Nice job mate!
A little easier than the car jacks and multiple engine hoists lol
@@TomMakeHere hahaha yeah, not nearly as much character tho 🤣
@@tristanhali8252 I'll step up my game then! More dodgy crap to come!
I am looking at building a gantry crane. And yours has some great features I might use too? Well done young man!
Go for it!
If the gantry is on uneven ground it can rock with the weight entirely on two (diagonal) casters.
And if the load is near one end of the gantry during this situafion it can potentially have a weight on ONE caster of the full load weifht, plus half the gantry weight.
Never skimp on casters! 🙂
Great video too by the way. 👍
Thank you
I've found that the frame twists slightly and adapts to the ground
But agree, never skimp on casters 😁
New T shirt message!
G'day Tom. Now that's a really good build mate. I love the adaptability of your gantry. Wish I had something like this in my little shop. As for the disclaimer, I know you would have drawn it in CAD and run a full FEA (finite element analysis) 😜
As it turns out I did analyse it ha ha
It is way overbuilt for what I currently require
@@TomMakeHere - "Nothing too strong ever broke" - T. Lipton
Incredibly well thought out design. Just to light on materials in my opinion for the tube. Really thin wall. I’m trying to build one similar size that I can put together in the field for when I have to reskin skid steer and excavator buckets.
Agree, I was limited by the materials I could get. The capacity of the section is fine though
The pins had to be larger than I'd otherwise need to increase the bearing area in the locking holes
Gday Tom, the gantry turned out great, I like the idea of using a bottle jacks to lift, brilliant idea, I wonder what the misery box is🤷🏻♂️, I guess we will just have to wait to find out, not sure if you heard it but there was some strange noises coming out of the car when you were shifting the mill, awesome video mate, throughly enjoyed watching, cheers Matty
Cheers Matty.
Yeah the bloody camry is the worst vehicle to move slowly bastard wants to rev and go faster. I have a ute organised which will suit my needs way better
Very nice build, im going to build one of these soon and you gave me some really good ideas! How much do you think you could lift with that set up? And what size ibeam did you use
I used a 150 UC member which will easily hold 1 tonne for the span I had.
I don't really want to give more specifics in case something happens on my advice
Great build. What would be the max load it could take do you think ? 2 tonne ?
Certainly up around that amount. It varies with the height though. The taller it is, the more the legs are subject to bending, and also the gantry is less stable
Love your grinding face :)
I thought everyone did that? 😁
@@TomMakeHere I do now
gday tom. what are the dimensions and the thickness of the square hollow tubes? cheers mate.
Nice work. Can we use arc welding to make this
Welding is welding. So yes
But building your own lifting devices is at your own risk
great job, what is the size of main beam? and how much loading does this crane can hold ?
I used a 150 UC member which will easily hold 1 tonne for the span I had.
I don't really want to give more specifics in case something happens on my advice
If you put the last hole you showed in the video in the under side of the top rail on a diagonal to the hole on the end of the rail it will be stronger and won’t rack side to side making it stronger
Yeah I wanted to do this, or all 4 bolts. Unfortunately the hole lined up perfectly with the web. As a future improvement I'd have a dedicated spigot that the leg can swivel on, and maybe cope out part of the web and weld in a nut
Great Build! just wondering why did you make the RHS legs and struts out of such thin walled steel? I'm thinking of building this to lift 3 tons. I guess 6mm wall thickness and 100m RHS? My wheels are going to be rated Caravan Wheels, so that when the gantry is "lifting" it'll be on its base only. What do you think? Cheers in advance
You would be amazed at how strong a thin tube is in compression
I work out that the casters and the I beam will fail before the tube in my case (my beam is spanning a long distance though)
Those sizes sound very robust. It will be heavy, but once it's built it will be a good thing
So what’s in the mystery delivery? And is that a house with sheds attached, or sheds with a house attached? Love your work, nothing like imagining it, building it and making it do what you designed it for, even if you’re the only one who’ll ever use it. Then again, maybe you could rent it out to Kennards😂
Mystery box contents will be revealed :)
I have seen many people moving stuff with gantry cranes. Moving the winch left-right on the beam is normally super smooth, and the easy to do in small increment.
But castors always want to swivel, especially when going from one direction to another. When moving "a long way" castors are great, they make the whole thing steerable. But when trying to be precise, they're a nightmare. You try to move forward/back and get an unwanted twist or left/right component. Keith Rucker often struggles with this.
May I suggest...
Making the castors LOCKABLE to front/back orientation, so they don't pivot? You would then have "pure" forward/back movement from the castors, and "pure" left/right movement from the beam. This (I think) sounds like a useful thing.
It's a fair point. I do need to move it sideways a little inside the shed. I didn't find it too terrible to use, but I'd probably put the load down, orientate the casters, and the move the load if I struggled.
But I might look into adding a lock for just the swivel, it could be useful
@@TomMakeHere My idea is only relevant for "precision" movement (e.g. lowering a machine onto studs embedded in the floor, or lowering a large milling head onto the main casting).
For larger "moves" castors are a positive benefit
.
@@TomMakeHere
Re: previous comments on precision movement and castors.
Watch Keith Rucker having a fairly miserable time with his gantry crane on (pretty good quality, and a smooth floor) castors.
th-cam.com/video/ntJ1KqpPd5A/w-d-xo.html (after 5:36)
My recommendation of castors than can be stopped from pivoting to give better separate X/Y linear movements stands!
I like your mill drill
What is the cutter for those large holes?
Also at what speed?
Thanks it's a Hercus Mk2 Milling machine
The holes were made using an annular cutter (also known as a rotabroach), I probably run these too slow compared to mag base drills (where they are normally used). They are like a hole saw for metal, but way better
@@TomMakeHere you definitely found a better way of making clean bores
Thanks
On galvanized I like using silicon bronze or 316 wire.
Interesting, may I ask how that helps?
@@TomMakeHere I like less spatter, smoke, and a slightly lower weld temperature. Weld results are better flow and penetration. And in most of my outdoor weld projects no rust or corrosion. Play with it to find your favorite material. One of my projects was galvanized pipe and 304 or 316 did the trick.
Tommy, ma mait!)
Isn't MIG brazing yet invented there in the Ozzyland?
Gassless mig works for my fabrication needs :)
1:41 👏 👍
Thanks for watching
Hi friend, how many kilos can a bow like this hold? 5t?
It is designed to lift a couple of tonnes
It may have already been asked, but do you have plans / beam sizes for this?
I'm very hesitant to give out sizes and capacities. Because it's a global audience, I can't guarantee similar steel sizes or strengths are available in other countries. Last thing I'd want is for someone to get hurt
So, no. I've not released plans unfortunately
@@TomMakeHereI thought that would be the case. Thanks for replying so quickly. Oh, what do you think is the lifting capacity is or what’s the heaviest item you’ve lifted?
@@fredspain4197 I've lifted about a ton, but it has plenty of spare working load beyond that
As another Aussie, are you able to give a rough estimate as to the cost of the raw material?
I know everywhere is different, just want to get a ballpark cost so I don't get completely shafted by scrap dealers.
I'm green enough that they could quote anything and I wouldn't really know better.
I'll take a look at what I was charged tonight
@@TomMakeHere Thank you mate.
I hope this channel takes off, It'll be well deserved.
I couldn't find anything, but from memory it was probably $600-800 for the steel
With casters, chainblocks etc it would have been over $1200 I'd say. Just depends on what your requirements are
@@TomMakeHere Thank you so much.
I at least have a ballpark now.
And solid evidence that I was indeed being taken for a ride for steel prices.
Keep up the awesome content and helping hobbyists like myself not get overwhelmed by the great unknown.
Buen día tom, tu proyecto me parece genial...
Quisiera que me vendas los planos de tu proyecto, quisiera mi pórtico para mí uso...
Espero tu respuesta mi amigo.
What was total build cost
Arguably a silly question, but would you mind covering how you determined the load capacity of this gantry? Is it just sheer load for the I-beam and compressive load for the A-frames? Whatever the lowest load between those two, that's what your max load for the gantry is?
Need to consider bending and shear of the beam, a central load causes maximum bending and at an end is max shear. Also compression in the a frames, a bit of allowance for the brace inducing bending, and the caster rating. But yes the lowest capacity component is what will limit the rated capacity. It also needs a factor of safety of course, so you aren't right on the limit
@@TomMakeHere This is generally calculated through the ratings based on gauge and length? I wonder if there's a pocket field guide that's "engineering for idiots".
@williams.7314 yeah I'm a bit hesitant to give any definite answers on capacities for fear of someone getting hurt. Iys hard because different parts of the world have different material strengths and sizes so it's a bit tricky to advise as it's a global audience 😅
Awesome build; If you could get them under 3 K plus shipping...They'd sell like hotcakes...
Interesting thought, I'd just worry about liability 😅
@@TomMakeHere ~sigh~ Lawyers, bless their teeny tiny black hearts...:)
@@godbluffvdgg you make the mistake of thinking lawyers actually have hearts 🤣
@@TomMakeHere Right? What was I thinking...:)
👍👍😎👍👍
Cheers!
I think you thought about this project for more than it than it takes to blink. Your thinking for your situation is good. Cheers from John, Australia.
Thanks! A few design constraints force you to be creative
1:30
Cost?
Upgrade to mig and get rid of the fluxcore. Its worth it.
I like to use gassless mig as a fast and portable process, especially on fabrication jobs. Eventually I will set it up. But if I want a very clean weld I use tig. There is a lot of redundancy in the welds on this gantry
4:07 LOL 😂😂😂
😜
Cost??
Can't remember now, steel was maybe $600 AUD, but I'm guessing now
Casters were quite pricey, maybe another $200
19:00 you might want to consider, replacing PLASTIC wheels, with REAL WHEELS. Air inflated 5 or 6 inch ones, rated AT at least 2000 lbs each. You are on eneven surfaces, as well.
I don't think I will move it very often, so I'm not too worried about moving it off concrete.
I was thinking about this approach when designing it, but the height and width limitations mean I don't have a lot of space to fit anything larger.
These were the only swivel casters that were rated high enough with a brake that I could get at the time. If the plastic becomes an issue, I'll make steel wheels at least
@@TomMakeHere OKay. You know what your needs are better than us. TAKE CARE, and B safe...from central Alberta Can
Nice work .
But why didn't you paint it?
It would look nicer.
I released a new video today - look at the difference with color and without color.
This was a project I needed to get done so I could use it
I agree, it would look way better painted, I might have to drag it out and give it a coat
@@TomMakeHere 👍
Tommy Gun machinery is a much better name.
Ah well, it will be good going forward from a bit more of a business point of view
would have been way easier to use if you had used hydraulics
This is a future plan to hydraulically jack the legs. The only problem is that it is expensive
NO... be careful... An eye bolt rating "General" drops by a quarter when the load is not 90 degrees but somewhere between 112 and 67 Degrees (~ 45 around the top) when you apply force below or above this range then the rating drops by HALF.
Love the build
I'd have to go back and listen, I might have mispoken, I meant it will drop to a quarter of the rating for 90°. I got that rating out of the Australian Standard AS 2317. Hopefully the take away for people is to check as the full rating does not always apply
@@Hope4Today9 thank you