Here was my solution at home:
I decided to build my gym in the 2nd parking space in my garage. I let my gf park in the open space and gave mine up.
I went out and bought 2 heavy gauge U bolts about 18" long and a 6 foot piece of box tube steel.
I went up in the Attic above my garage and put the tube steel over one of the wooden beams. I drilled through it every 12" and used 5" wood screws to keep it in place.
Then I put the U bolts over it and through holes I drilled into the ceiling.
Then I took two 6" pieces of steel box tubing and drilled holes through them the same distance apart as the prongs of the U bolts. I slipped them up and on and put two heavy duty nuts under them leaving about 3" of space between the tube steel and the ceiling.
I then put two towing chains through the spaces and used the hooks to make a loop at the top.
Now all I have to do it load the bar and hoop lock the bottom of the towing chains around the bar. I use a really big loop so the bottom of the loop is just about chest height and the top is above the top of the bench press rack point.
I get two benefits… I can go heavy at home and if I fail I can lower it down and scoot out. I can also watch my form by keeping my eyes on the chains and making sure they don’t swing.
However, letting the weight hit the bottom of the chain loop makes a pretty big bang in the house.
This winter I am considering using this rig and a chain winch to pull an engine.