Problem: I have a 98 lb box with dimensions of 45"l x 41"w x 27"h that holds a holiday decoration. I need to lift it to a shelf I made that is 103" above the floor. The space I have between the shelf and the ceiling is 32", so I have 5" of clearance to get the box on the shelf. Second part of the problem is I am an EE trying to be an ME ;)
At first, I was going to try a 100 lb bicycle/kayak lift that has two hooks and reinforce holes on the front and back of the box and lift it that way. That method may work, but it needs more than 5" from the ceiling to the top of the box so I would also have to be under the box pushing it up and in.
My other idea was this simple pulley system. The plan is that I can lift the box as high as possible up to the edge of the shelf with one person holding the line, and I push the edge of the box onto the edge, then have then loosen the line to push it the rest of the way. I'm looking for the best way to do this.
- Where to find the pulleys? I hope I can find a pulley for the ceiling joist that has a plate with holes for one bolt in front and one in back of the wheel to screw into a 2" joist. And I need a pulley with an eye on the bottom to connect to the box.
- How to connect the box pulley to the box? Maybe a simple dual sling of a two ropes to go under the box? Or spreader bars from 2 x 4s?
- Other than the ceiling pulley being able to clear the box and have the ceiling eyelet being over the shelf to be able to push the box over the end of the shelf, how should I properly calculate the space between the eyelet and the ceiling pulley.
The shelf is the brown rectangle on the left. The ceiling joist is oriented inline with the rope and pulleys, so the ceiling pulley would have a bolt to the left of the wheel and a bolt to the right of the wheel in the image.