A scraper device for an animal holding facility includes a trolley to be displaced along a guide member by a wire, a scraper element attached to the trolley to be dragged along a surface to be scraped, and first and second wire engagement mechanisms connected to the trolley. The first wire engagement mechanism has a first wire locking direction, a first wire release direction, and includes a first release mechanism for automatic releasing of the wire. The second wire engagement mechanism has a second wire locking direction, a second wire release direction, and includes a second release mechanism for automatic releasing of the wire. The first and second wire locking directions are directed in opposite directions and the first and second wire release directions are directed in opposite directions.
