Fecha de publicación: 25/02/2022 Fuente: Wipo Tobacco Agriculture The utility model discloses a positioning and frame opening device for a trolley, which comprises a square support, a conveying line is arranged below the square support, cross beams are arranged on two sides of the middle of the square support along the conveying direction, and lifting components are fixed on the cross beams. A plurality of guide assemblies are arranged on the two sides of the inner side of the square support in the conveying direction, and locking assemblies are arranged on four supporting columns of the square support. The automatic trolley conveying device has the advantages that the trolley is automatically conveyed through the conveying line, automatic conveying is achieved, and the manual labor amount is saved; the frame opening action of the trolley is achieved through the lifting assembly, and the structure is simple; the trolley is guided through the guide assembly, so that the conveying direction is accurate, and conveying is smooth; fixing and locking of the trolley are achieved through the locking assembly, and the structure is ingenious; the positioning and framing device is clear in structure and easy to produce, machine and manufacture; the trolley is accurate in positioning, firm in fixation and smooth in conveying.