We obtained this as part of a bulk lot. Please help me figure out which set it is from. A Web search found many cranes, but not like this one. Could be a MOC ;-)
Based on the pieces in the photo is looks like the remains of set# 4957 Ferris Wheel.
They had apparently built one of the secondary/alternative models from the set.
(Building instructions here: https://www.lego.com/en-us/service/buildinginstructions/search#?search&text=4957)