Help with loose connector on 1 inch steel pipe

[praburamalingam]

I built a pull-up bar in my backyard with 1inch galvanized steel pipe.
Four - 5 feet long - 1 inch pipe with connector to make it to two 10 feet bar.
One - 7 feet long - this is horizontal. - Used 90 degree elbow to connect the two 10 feet long bar to this one.

I cemented the legs and left it to dry for 2 days. it stood firm when I moved it a bit. I tried to swing on the bar today and i see it is wiggles near the connectors on the legs. How can I salvage this? I need to be firm for my exercise routines and am planning to add a swing hammock to it.

Picture of the set up is attached.

Please help.

 

[CT18]

I think couplings that are used for thread protectors you can bottom the pipe out in them. That would at least get the threads butted up