Automatic continuously variable transmission and working method thereof

The invention relates to the field of gearboxes, in particular to an automatic continuously variable transmission and a working method thereof.The automatic continuously variable transmission comprises a box body, an input shaft structure, a driving gear set, an intermediate shaft structure, a first centrifugal transmission part, an intermediate tooth structure and an output shaft structure, the box body provides installation conditions, and the input shaft structure is connected with external power equipment for power transmission; and meanwhile, the centrifugal transmission part can be driven to rotate, the driving gear set can be driven by the input shaft structure to rotate so as to drive the intermediate shaft structure to rotate, and when the rotating speed of the input shaft structure is lower than the first rotating speed, the overrun clutch corresponding to the intermediate teeth of the first gear is locked with the intermediate shaft to drive the output shaft structure to rotate, and the gearbox ent