Jump bed base detachable floating hinge

[Berlingo2CV]

Has anyone come up with an idea/ design for making the folding bed base easily detachable so it can be lifted out before the main box unit? I know Gravity was doing this on his design but I can't work out how he made it secure yet easily detachable. Having to remove and reattach a piano hinge would be a pain!

[oilyrag]

Possibly consider the use of 'split' hinges, available in all manner of sizes - they slide apart leaving a pin on one plate and the corresponding tube on the other.
   

[lakeside]

Though I favour the split hinge; dependent on the layout a dowel on one piece mating with drill hole on a supporting leg works.