Workpiece unit, curved-surface canopy grid structure and mounting method of curved-surface canopy grid structure

The invention relates to a workpiece unit which comprises a first body and a second body, the first body abuts against the second body, the first body is provided with a first groove and a first inserting assembly, and the second body is provided with a second groove and a second inserting assembly. A plurality of slots are formed in the side walls of the first groove and the second groove; the first plug-in assembly comprises a rotating unit and two plug pins, the rotating unit is connected to the first body, and the plug pins are matched with the slots. According to the workpiece unit, the first body and the second body are fixed at any included angle through the rotating unit of the first inserting assembly and the plug pin, so that an integral curved surface structure is formed after integral connection is completed, and the construction error-tolerant rate and the installation efficiency can be improved in the mode that the workpiece units are installed one by one. 本发明涉及一种制件单元，包括：第一本体和第二本体，所述第一本体与所述第二本体抵