Welding tray for realizing centering function of weldment by utilizing self-centering characteristic of weldment

The utility model is applicable to the technical field of welding, and provides a welding tray for realizing the centering function of a weldment by utilizing the self-centering characteristic of the weldment, which comprises a tray, a mounting groove is processed on the tray, a limiting piece I is arranged on the tray in the mounting groove, and a plurality of limiting pieces II are arranged on the tray; a first inserting part is arranged on the first to-be-welded part, and the first to-be-welded part is arranged on the tray through cooperation of the first inserting part and the first limiting part; a plurality of second inserting parts are arranged on the second to-be-welded part, and the second to-be-welded part is arranged on the tray through cooperation of the second inserting parts and the second limiting parts; the first to-be-welded part is placed in the mounting groove of the tray through the cooperation of the first inserting part and the first limiting part, then the second to-be-welded part is pl