Positioning device of annular guide rail

The utility model relates to the technical field of production lines, in particular to a positioning device for an annular guide rail, a secondary positioning component comprises a positioning pin and a positioning fixture block mechanism, the positioning pin is arranged on the side surface of a trolley plate, and the positioning fixture block mechanism is arranged at a working position corresponding to the positioning pin; the trolley plate positioning component comprises a protruding block and a hasp structure, the protruding block is arranged at the bottom of the trolley plate, the hasp structure is arranged on the conveying belt of the annular guide rail, and the protruding block is in clearance fit with the hasp structure. According to the utility model, the first positioning of the trolley plate is realized through the annular guide rail, and the second positioning of the trolley plate is realized through the secondary positioning part; meanwhile, relative movement can be generated between the trolley p