OPENABLE STRUCTURE

An openable superstructure for a substructure (), i.e., a self-propelled truck, a truck, a semi-trailer, a trailer, a container, a dump truck, a railway wagon, a building or the like, comprising a foldable top frame (), a cover () for connection to the top frame (), in particular a tarpaulin, and a drive () for folding in and/or out the top frame (). The drive () causes at least one at least tension-resistant tension element () to perform a movement and which can be coupled to a distal carriage (′) of the top frame (), moving the distal carriage (′) back and/or forth based on the drive's actuation direction. The drive () comprises a driven first rotating body () and a second rotating body (), arranged adjacent to one another, forming a drive device () The tension-resistant tension element () is wound several times around the drive device ().