Door frame pull ups as stall bars

Hi I just moved into a new apartment and I can't screw anything into the walls so I can't have stall bars here. Could I just setup a few door frame pull up bars that are mounted by pressure, evenly space them out, and then use them as stall bars? I don't see myself going to the playground several times a week to do the stretches 

You could do this for some of the elements, such as HLL; I don't know if I'd be willing to trust them for the deep hanging stretches or jumping to side lever on em.