Pipe piece turnover machine

The utility model provides a duct piece turnover machine which comprises a base and a turnover frame, the turnover frame is installed on the base, the turnover frame is provided with a cambered surface translation seat and an end translation seat respectively, the cambered surface translation seat and the end translation seat are both installed on the turnover frame through a plurality of supporting rollers, and each supporting roller is sleeved with a reset spring. A first translation oil cylinder and a second translation oil cylinder are fixedly arranged below the bottoms of the cambered surface translation base and the end translation base respectively, and the telescopic ends of the first translation oil cylinder and the second translation oil cylinder are connected with the bottoms of the cambered surface translation base and the end translation base respectively. The cambered surface translation seat and the end translation seat of the duct piece overturning machine are respectively driven by the transl