I would like to mount a hammock chair like the one below to the roof of my balcony. Or rather put a rope around a wooden bar (see the next photo) just like I were mounting it on a tree branch. However, I am not sure the wooden bar and its mounting points can stand the weight of me in the hammock (around 80kg). I've tried to do some pull ups and the bar seems stable enough, but I'm not sure if it would stand longer stresses and movements of the hammount chair.
What could I do to make sure?
Mounting of ceiling member to a root rafter: