My friend Bill needed a hoist to lift equipment on and off his flatbed trailer …
( CLICK on the images to see a larger view of the SolidWorks renderings )
He needed it to go up to 12 1/2 feet ( Measured from bottom of the i-beam )
Also Bill wanted to be able to store the hoist in a lower 8 foot position …
The most common height the hoist will be used at is about 9 feet …
There is a possibility the hoist may need to be taken to a job-site in the future, so when designing it in SolidWorks I made sure all the individual parts could easily be lifted in and out of a trailer by 2 workers.
The hoist sits on Threaded Levelers that are put down for support when doing any lifting; in addition, when not lifting items the threaded supports can be raised so that the hoist rests on the wheels and can be rolled around anywhere Bill needs it on his concrete pad.
After the wheels arrived I drew them into SolidWorks to check the fit-up …
Once all the designs were finished, Bill purchased the metal, and I drove it back in my Jeep so I could drive all the way inside the shop to unload the metal.
You can see in these photos why I won’t get rid of the ole’ 1999 Jeep because I can take out the seats and haul a lot of stuff in it.
Can get 90″ lengths of metal completely inside the Jeep, and if needed, longer items can hang out the back window … and on some occasions I will take off the top to have a full pickup like vehicle.
It’s not shown in these photos, but I was also able to get ALL of the 5″ square tubing into the Jeep because we had it pre-cut to length at the metal supplier
I like to view my Fabrication Drawings on an i-Pad when working in the shop, so took SolidWorks screen-captures of the parts I wished to work on each day to show me the dimensions for cutting & drilling, as-well-as welding fit-ups
There are MANY more bolt-on hole locations on the Hoist than are needed; however, it was designed this way so we may use some of the parts from this hoist on additional future projects such as a remote Drill Rig structure for drilling in Helical Piers & Micropiles for soil & foundation stabilization.
At the same time I was building the Hoist used left-over metal to design and build a set of Pallet Lifting Forks for use with the Hoist
Since I was using Left-Over metal I had to use the size & thickness available so came up with a method of adding some additional strength inside the Forks
I took some 1 inch threaded rod and welded 2 bolts to the rod at a specific length to match some holes in the Fork’s rectangular tubing … Also drilled an extra hole in the mounting plate that the rectangular tubing was going to be welded … In the photo below I have the threaded rod sitting on top of the rectangular tubing as it fit inside and then was welded from the outside holes … I don’t have photos of the process but when all the welding was done I ground the outer welds smooth.
By welding the rod to the nuts, and then the nuts to the rectangular tubing, it stiffened the rectangular tubing at a possible bend point on one end if lifting something very heavy from the other end of the forks.
In addition, the end of the threaded rod was welded inside a larger diameter hole in the mounting plate which was also welded to the rectangular tubing.
Once all the designs were finished, I started cutting metal to build the Hoist …
After cutting the metal, I started drilling holes with a Magnetic Drill Press …
The new DeWalt MagDrill & Annular Bits cut through the steel like butter!!
I chose the DeWalt MagDrill because it has a Quick-Connect feature which allows the user to quickly switch between different diameter Annular Cutters and/or attach the included normal Drill Chuck for smaller bits
Once the holes in the 5″ Square Tubing were drilled I cut lengths of pipe to fit into the holes … Used different diameter pipe to match with the size of bolts that would be going through the inside diameter of the pipe
Nominal Pipe Size 1″ has O.D. 1.32″ and I.D. 1.05″
( Use this for 1″ Bolts )
Nominal Pipe Size 3/4″ has O.D. 1.05″ and I.D. 0.82″
( Use this for 3/4″ Bolts )
Used the Lathe to bevel the ends of the pipe to allow more weld penetration so the welds could be ground off smooth leaving just a hole in the Square tubing with the welded pipe inside so water can not get inside the tubing once painted.
This is something we had to do years ago when working on ships … any holes had to have a pipe welded inside, thus sealing up the inside of the Structural tubing or pipe from the weather.
Sometimes when I am TIG Welding the metal gets too hot for normal gloves, so I use a ‘TIG FINGER’ to keep comfortable – Click on the Image below to get more info about the TIG Finger.
Welded together the Center Supports using Miller Multimatic™ 200 …
Some of the Leg holes I waited to drill until I had the Center Supports finished …
I have a VERY small shop area and this project was much larger than my welding area … Therefore, while I would have liked to have felt any leg would fit on any other leg’s mounting location, due to my limited shop and welding table size, I could not make a welding jig on my table so I decide to do one leg at a time and weld numbers on the leg to match the location I knew would fit on the center supports … Ya know *GRIN* Just in case there were any welding discrepancies.
As it turned out all the legs fit in the other mounting locations … Got Lucky!
When all the welding was finished I bolted together both of the Side Stanchions on the floor as one last test fit-up prior to priming & painting all the parts …
To save space I drilled and tapped 2 of the holes for mounting the wheels …
Some of the parts I painted White and others Gray …
To put together the Hoist we bolted it together on its side with the i-beam slightly raised, and then we lifted it up with a Skid-Steer from the center of the i-beam and tipped it onto the legs.
We used the Skid-Steer to raise the Hoist to its 12.5 foot Height the first time …
Once the Hoist was up, I double checked the ‘real-life’ hoist measurements and then welded the Hydraulic Ram ( Quick-Connect ) brackets … The next morning mounted the brackets onto the hoist so it can be raised and lowered by one person … Easier with two people, but I did it by myself the first time
The Hydraulic Ram brackets are Quick-Connect using only 1 bolt but they don’t have to be removed when the hoist is in its normal 9 foot position because the 20″ ram stroke allows the i-beam to be lowered to its lowest point
The Rams were on the Hoist for about 10 minutes before it was being used to lift Helical Piers and Drilling Pipe onto Bill’s trailer by his workers …
I uploaded the Hoist’s SolidWorks CAD files to GrabCAD.com
That’s All …
~ CHEERS !!
. . .