Shop Elevator?

I would not configure the winch as you drew it. using a block is a good idea, tho. I would revamp the structure so you can lift from the center, either construct a ^ at the top of the frame, or brace the frame so you can pull from the center of it. Good idea to run a vertical member from the pull point down to the bottom of the frame. Then just use one snatch block. Use a nice big one with ball bearings. You can buy them "cheap" at the various importers. Be sure to "re rig" the block with permanent bolts, etc, so it won't come open

The popular "orange" blocks have been around a while, and are a pretty good buy



I thought I should post this, LMAO because I happened to find it in a search