Three-dimensional multi-grid sorting machine and sorting method

The invention discloses a three-dimensional multi-grid sorting machine and a sorting method. The sorting machine comprises a base, a track assembly and a three-dimensional sorting car. The multiple three-dimensional sorting cars are sequentially connected along the track assembly and arranged into a ring shape. The rail assembly is installed on the base and comprises an upper rail and a lower rail. The three-dimensional sorting vehicle comprises a vehicle frame body, a guide supporting wheel set, a lifting driving assembly, an anti-inclination assembly and a lifting output assembly. And the bottom of the frame main body is supported on the lower track through a guide supporting wheel group. And the top of the frame main body is connected with the upper rail through an anti-inclination assembly. A three-dimensional sorting vehicle is supported on an inner lower track and an outer lower track, and an upper track for preventing inclination is arranged at the top of a sorting machine; the upper track is arranged