Continuously variable transmission

A continuously variable transmission, comprising an input end planetary gear set and an output end planetary gear set, a cavity planetary gear carrier is disposed between the input end planetary gear set and the output end planetary gear set, wherein the cavity planetary gear carrier includes a cavity input end cover and a cavity output end cover, the cavity input end cover is connected to an inward side of the input end planetary gear set, the cavity output end cover is connected to an inward side of the output end planetary gear set, and a bucket wheel cavity housing is fixedly disposed between the cavity input end cover and the cavity output end cover;

• the input end planetary gear set includes an input end sun gear and input end planetary gears, the input end sun gear is engaged with the input end planetary gears, planetary gear connecting shafts are disposed in middle of the input end planetary gears, the planetary gear connecting shafts pass through the cavity input end cover and are rotatably coupled to the cavity input end cover, the planetary gear connecting shafts pass through the bucket wheel cavity housing, an input shaft is disposed in middle of the input end sun gear, the input shaft passes through the cavity input end cover and is rotatably coupled to the cavity input end cover, and the planetary gear connecting shafts pass through the cavity output end cover and are rotatably coupled to the cavity output end cover;
• the output end planetary gear set includes an output end sun gear and output end planetary gears, the output end sun gear is engaged with the output end planetary gears, the output end planetary gears are fixedly connected to the planetary gear connecting shafts that pass through the cavity output end cover, and an output shaft is disposed in middle of the output end sun gear;
• and
• a portion of each of the planetary gear connecting shafts in inside of the bucket wheel cavity housing is fixedly provided with a bucket wheel.