ceilingmounting
I would like to mount a punching bag on the ceiling as there are not really any good boxing gyms here in Madrid.
Key Facts
You can see in the images all the ceilings and the metal mount.
I would attach a wood 4x4 or a steel lintel or another type of heavy angle iron to the ceiling.Then from there you can hang what ever you want. I would attach it every 16" O.C with a redhead 1/2" wedge anchor (available at any home center). They are rated for 5,000 lb pull out force. If the concrete was rated at 5,000 psi you could hang your car from just one bolt. Since you dont know how strong the concrete is the other bolts will act as back up for each other. Also because you dont know how thick the concrete is only go with 2-3 inches of penetration. You dont want to go through the roof.
One setup which would be easy to setup and take down would be a combination of a ceiling mounted punching bag carabiner, swivel pulley, and boat cleat.
Start by bolting the carabiner to the ceiling. A solid wooden beam would be perfect for this. After that, mount the boat hitch to a solid vertical surface such as a wall or vertical beam.
Then attach the swivel pulley to the carabiner, and tie one end of a piece of rope to the punching bag. You can use an anchor bend knot to attach the rope to the metal ring. Fish the other end of the rope through the pulley and lift the bag into place with the rope.
Tie the rope off on the boat cleat by using a cleat hitch. This setup will easily allow you to take the bag down and set it up without using any tools. The cleat and knots are designed to hold a boat, so a punching bag would be no problem.
The cleat can be purchased at any marine supply store, or boat dealer. Just about every cleat on the market will be strong enough to support a heavy bag.
There are two main styles of cleats. There are ones which have 2 screw holes which go through the center, and others with 4 holes. The ones with the 2 center holes will take more abuse before failing than the 4 holed varieties.
Best Answer
If photos 6/7 are indicating you have some kind of dropped ceiling, then you definitely cannot attach this to the dropped ceiling. It won't support any load.
Best option in that case is to build a free standing structure and hang your bag on that. A couple of A frames and a beam going across the top where you'd attach the bag would be easy to build. Use a few bolts for the assembly and it would also be easy to disassemble and relocate. Keep the span of the feet wider than the maximum swing of the bag to avoid having it tip over.