Hi, I am looking for help setting up a simple pulley system (i.e. system uses only one cable) to lift a bed straight up about 3 feet.
I want to be able to lift the bed evenly from each corner, and use only one cable. The bed is lofted and weighs about 200 lbs. It is in a guided track, hung from the ceiling with chains. The lowest position allowed by the chains is about 4 feet above the floor.
The number of pulleys needed doesn't have any restraint--whatever the solution is will work for me.
Originally: I tried starting the cable at the ceiling above one corner, running down to the bed, around a pulley and back up--over a pulley then across a short side, over a pulley and down to the bed, around a pulley and back up--over a pulley and across a long side--over a pulley and down to the bed, around a pulley and back up--over a pulley and across a short side, over a pulley down to the bed, around a pulley and back up--and then around a pulley again and to the floor for a hand winch to crank up the bed.
This didn't work when trying to hand lift the bed. However, I am not sure if it is because of the specific way the pulleys were installed, or because the system itself is flawed and won't work no matter how well I install the pulleys.
I am looking for help on how to accomplish this, so my method doesn't need to be used. Any method that involves using one cable and lifting all four corners evenly will suit me just fine.
Thanks for the help!