Balance wheel sorting machine, cargo sorting system and cargo sorting method

The invention provides a balance wheel sorting machine, a goods sorting system and a goods sorting method.The balance wheel sorting machine comprises a bottom frame and a plurality of balance wheel assemblies arranged on the bottom frame in the first direction at intervals, and each balance wheel assembly comprises a supporting plate, a first gear and a plurality of balance wheel units arranged on one side of the supporting plate in the second direction at intervals; the multiple balance wheel units are rotationally connected to the supporting plate, and the moving direction of the goods is changed when the balance wheel units rotate around the third direction; the first gear is located on the other side of the supporting plate, a gear shaft of the first gear penetrates through the supporting plate to be connected with one balance wheel unit, the other side of the supporting plate is slidably connected with a first rack extending in the second direction, and the first rack is meshed with the first gear; a dri