Family saved $5000 building our own own gantry crane lift! See how!
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- Опубликовано: 20 дек 2017
- I needed to move some heavy things around the shop and could not figure out how I was going to do it apart from investing either $15K in a forklift or as much as $2-5K in a steel gantry crane. All I really needed was to get heavy items off of my trailer, so I decided an overhead crane would suit my needs just fine.
This crane is made from 6x6 treated timber for the base/ leg assembly and a lamination timber I made from (4) 2x8's. The entire structure is screwed together with heavy duty timber frame screws. In the future, I plan to do more bracing with the crane and further reinforce the structure for added security. For this one test, it worked quite well.
The dimensions of the crane are about 10 ft. high and almost 8 ft. wide with legs that are 4 ft in depth.
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Nice job. I am an engineer, and have a few suggestions. White Oak would of been much better choice, especially if you can saw the header as a vertical grain. Winches are not supposed to be used for lifting because there's no brake to hold the load, so be careful with a suspended load, gearbox will eventually fail. Use larger bracing at top to support beam closer to center and reduce the bending moment in the beam. Of course small loads are whatevers, but just like everything else, I'm sure you'll max it out sooner or later
You just added over-kill to something that exceeds the need.
I love your added information.
Fiddlesticks on the above comment or.
I can relate to not having a forklift and tractor. Thanks for taking the time to share.
Unfortunately, no lumber is ever really mitered square on the ends when originally cut for resale by lumber yards, big box stores etc. You will always find that both or at least one end will always be off square by several degrees. Using beam type wood screws is okay, but bolting the beams together is better for continuous holding power in beam type construction, such as with your gantry. With bolts and nuts, the gantry is sufficiently secured, but can still be easily dismantled if the need arises to move the gantry to a distant location. The drilling of holes through the top lifting beam, for mounting the motor will over time weaken your lifting beam at the point of the motor. The weakening can be eliminated by having a nearby welder fabricate 2 steel plates for the screws to go through on either side of the top beam. Even better, have the welder fabricate a single steel plate 6" x 6" x 6" bent so that it will straddle the top beam with 4 holes drilled for the bolts to pass through. The cost to have a plate made will be nominal and wisely spent, that is, when you consider what you are asking your gantry to do and to endure. Remember, your gantry will be outside more than inside, between the weather and the lifting of weight, the beam will lose a lot of its strength over a period of time. If the beam and the lifting motor are additionally supported by some type of steel plating, the gantry will more than likely last a lifetime.
its always nice to put some good 3/4 or 5/4 exterior plywood between those beams. glue them together! makes these things hard and stiff!
If you use a snatch block with your winch you will not work it as hard and it will give you twice the control.
GreaT job ,building one soon. Nice simple easy thanks for sharing
Based on the top beam being 5.5 inches wide and 7.25 inches tall, with an allowable bending stress of 1000 psi and a span of 8 ft, the maximum load in the center of the span would be about 2000 lbs. This does not consider any other failure modes.
🤯
Great Job! Really enjoy your videos.
It's great to see people make it make what ever they need instead of being so dependent on others. Great job!!!
I really expected you put put the winch ATOP the beam, and just run the cable down through the cross-beam, through a hole (or void in the glue-lam's?). That way it's inherently stable, the winch base pressing down on the beam, not hanging off the side on the bolts, putting the bolts in tension and the beam. I'm not an engineer either, just a duffer structural draftsman, for a lot of years. Good on you though, loved the video.
Yah-
-you know what-
-I kind of thought he was going to run the cable through the beam also.
😂16:19 the girl winking and giving a thumbs up. 👍🏻. Kids crack me up. Nice job.
Just by how the winch sound I'm would say the stump is around 2300#. Nice job on the project and the kids. They know where to be.
Nothing wrong with that good stuff I'm doing the same but using round logs because that is what I've got.
If it was me I would get a 5" snatch block to help with lifting
You can buy all of the steel brand new for far less than $1000 and Amazon sells a 4000# one for under $900 with free delivery. I’m a professional welder and I got one from Amazon.
But for those of us who are not welders don't have the option that you may have.
I would consider some sort of metal plate to hang below the beam to help any bending stress. About 10-gauge steel? About the thickness of the subframe on my 1999 Toyota Solara....
Nicely done
I have a structural beam between my living room and kitchen/dining room. It is 2 2x10s and a half in piece of plywood. I have another story and a roof above that. You will never be able to reach the capacity of that beam. Your legs and supports will fail long before the beam goes! NEVER "lift" with a winch the capacities are calculated differently.
But your house is a st static load.
That tree stump was migrating pretty far upon lifting it off the trailer.
Season's Greetings to you and your family - Just a thought, it seems recharging the battery in it's curreent location will be a bit of an adventure - maybe leads down the side or relocation of it would be in order...
@9:30
BRILLIANT!
A winch over a chain! 👍💯
Interesting build. I admire your desire to use wood. A couple notes/suggestions.
Your ATV winch is meant to pull, not lift. Check out the first bullet on the last page of your owner's manual. Northern Tool and Harbor Freight sell some cheap cable lifts that will do what you want to do.
To hang our lifting device, You might consider using some heavy steel over the top of your beam with suitable a suitable connection to the bottom of the beam and another piece of steel. Then hang your lifting device off that so you are not compromising the strength of your beam by drilling holes through it.
You might also think about getting some reinforcing plates on those joints so a side load doesn't destroy your crane. Wood screws don't provide nearly enough support to keep it from collapsing diagonally.
Good luck with it, and keeping kids and dogs a safe distance away is also demonstrating how much you care for them and want them to grow up intelligent, independent people.
Excellent points!
Just got a nice gantry crane with 2t capacity for 600 USD.
hook that cable end on the other side of the beam! put a pully and hook in between. you could handle twice as much with THAT setup. will put the load inbetween those beams WHERE IT BELONGS!!
The structure is only as Strong 💪 as the weakest area of it; which could be any Number parts /areas on it., including only two bolts to mount the atv hoist.
Please put some kind of box frame around the battery so it won't fall.
Good job
Your dog is getting big already. Job well done. you would not believe the comments I got because I bought two treated 4x4s in one of my videos. Good thing you headed that off. I want to build a gantry like this to take logs off my trailer when I don't have the skid loader around. job well done keep up the good work. 👍
One note on construction. I strongly recommend strengthening the bracing in the corners. The timberlock screws have wiggled loose a little, and I see I will have to do a little more work before I am 100% confident of this lift. Also, I added a chain hoist. Updated video moving something much heavier coming out soon, thanks!
Agreed ---- TimberLocks are amazing, but a lot of what you have is screwed into end grain, so you lose a good bit of hold there.
If you put an outside board on all 3 sides of the top beam, overlapping the tops and sides of the posts, it'll help tie them together much better. And I'd probably use through bolts on the ends, and at quarter points in the beam, using Timberlocks in the the rest of the field.
I'd also go for some bracing to tie the outside and inside faces of the lower corner braces to the posts. This is all based on upgrading what you have already built
You are on the right track mate :)
Dogs are awesome and I'm glad that Winston is a good pupil and also that you have those little helpers to keep you centered :)
You could have bought a $580 gantry from Northern tool that is 8' tall. Or spend $400 in labor and $300 in lumber to make something too heavy to move around.
Nice gantry. Cheap is good bro. I made mine from free metal - so it can lift ~10,000 lbs. But that wood one really looks nice.
Thanks, appreciate the kind words.
I've built 4 over the years, 2 wood somewhat like this one and 2 from metal. I used an I beam for the metal ones so I could hang the chain hoist on a trolley to give maximum flexibility. The end supports were 1-1/4" square tube, 4 pieces. They worked awesome in my old tractor repair shops. I put casters on the bottom of the legs so I could roll it anywhere in the shop.
Do you have a video on what you plan on doing with the big trunk?
I'm wondering if you built a bigger hoist to move that structure out of your garage door.
Next time you need custom length bolts look at "All Threaded Rod", common hardware store item, usually from 1/4" to 1/2" diameters x 3- 4 foot lengths, simply cutoff what's needed. ☺
I am making a similarly fixed gantry as part of a rear carport wall.
I am using 4x6 pressure treated. These people on you tube
using 2x4's are scary.
Something I learned in the 70's is to put 2 eye hooks 2' from each center. String a safety chain
through the hoist as well as the hoist crane. Be a bad thing to put all your trust into a made in China hook.
worked good, I was kinda afraid the wench would not hold that much weight and start coming back down as soon as you let off the button, but it is doing good.
My concerns were the same. I have already updated it with a chain hoist! Kkeep posted for newer videos showing modifications, thanks!
I don't think the wench was holding much weight! ;) Nothing she couldn't handle, anyway. LOL I was, however concerned about all that weight on the winch, and those two tiny bolts. :)
So what's the total cost in building this ?
Cool build and great info. Lol, is your dog eating rocks?
Looks nice. I've noticed people like to announce they are engineers and therefore you need to stop in your tracks and salute. I have a Harbor Freight ready made gantry rated at 2000 lbs that sells for $730. And use a chain hoist made for lifting - keep your family at a distance. Use your lumber to build Noah's Ark.
эх мне бы такую мастерскую мечта ... инструмента что только душа пожелает ...
.....looks like it’s almost a great catapult !
That's one scary crane. Screws don't have shear strength. There are a lot of good videos on post and beam construction.
Timber screws do have great strength. I have made some improvements to the crane since this video was made, such as reinforcing the corners and adding a chain hoist.
Get a battery box and secure to wood and then put battery in box it will be much safer
awesome,boy a boatbuilder would kill to get their hands on those knees,,cypress ,or ceder?
Great job. The winch set up is not ideal! Glad you’re abandoning that rigging. Wondering how much you hate your dog?!?LOL he was definitely going to be your crash test doggie if there was a a failure! Keep innovating and best of luck!
Could have bought a 4K metal Gantry Crane on EBay for 950.00
You are lucky your dog didn't get squashed.
bit surprised you had dogs and children around a suspended load. I have had colleagues killed from being under a suspended load. Also bolting your winch sideways to your top wooden beam jeopardises the beam and cuts down the safe weight as the wood can split.. Small load yes , tree stump no. Snatch blocks are handy but the set up you have would have the danger of splitting the top beam.
If you would have used 2x12,s for the top it would be stronger !
Chain hoists are pretty inexpensive.
@ 16:12 you see his wife walk into the shot, pick up the lightweight plastic tree trunk and take it to the back yard
Self censorship. I just deleted my negative comment. But left this in:
None of my business but it was irresponsible of you to conduct the lift with kids around.
Well, they are my kids, and I'm not teaching them to be little snowflakes. Our living is intentional, and I think if you watch where I lift the stump, they are a good 10-15 ft away at all times and yelling, "be careful", so I think I'm doing an OK job with that. Appreciate your concern for our safety, but obviously, no one wants to get hurt.
"irresponsible" would be to keep the kids inside some little padded world of super safety Sally'ness. Those kids are going to look extremely smart some day when they get older compared to the over-protected video game playing thumb warriors that stay in their protective cocoon. Congratulations to a great father for having his kids out their with him.