Have anyone build or buy a crane or mechanism to load/unload shipping containers?

[roadhunter]

4 handyman jacks would be a simple solution but require some skill and patience to work correctly.

The simple fix is a roller on the back of the trailer and a winch at the front like the oilfield trucks use. They can load and unload all sorts of stuff in a short amount of time with just a winch.

You could build a set of gin poles for your truck and unhook the trailer and pick up each end and set it on cribbing to pull the trailer out.

Or you could build some pipe legs similar to what spud barges use.

 

[quicksandfarmer]

If the container is the same width or wider than the trailer you could weld a trailer jack at each corner. These ones are rated for one ton, $20 each:
Heavy Duty 2000 Lb. Capacity Top Wind Trailer Jack

When the container is on the jacks you could roll the trailer out from under it.

Those ones have a lift height of 10" which should be enough if you can mount them properly. Electric ones are available but they seem to start at about $250.

 

[davedj1]

check this vid out, I think with the proper prep of trailer this could work quite well. I would love to have one of these trucks.
Winch truck.
https://www.youtube.com/watch?v=nlQIkh5fsxM

 

[Parkanzky]

Some inspiration:

https://www.youtube.com/watch?v=BPpI-73zBOo

 

[msb1766]

Call a local tow company and have them put it on a flatbed.
https://www.youtube.com/watch?v=u9RFZgBBpcg