Gayle: maybe this will help
Gayle, here's some more information for you to browse through.
When you hang your porch swing, be sure and investigate exactly where the structure is.
You don’t want to pull it out of the ceiling decking when it should be attached to the ceiling joists
Here's one idea: https://www.hometalk.com/9960428/build-a-porch-swing
Hey Gayle! I built a porch swing that we can't get enough of...and I offer the step by step plans for you to build it too! Porch Bed Swing