Transposition mechanism of reaction cup and in vitro diagnosing equipment thereof

The utility model discloses a transposition mechanism of a reaction cup and in vitro diagnosing equipment thereof. The transposition mechanism of the reaction cup comprises a bottom plate assembly, a transitional groove assembly, a driven wheel assembly and a driving wheel assembly, wherein the driven wheel assembly and the motor assembly are respectively arranged at both ends of the bottom plate assembly, a synchronous belt of the transitional groove assembly is sleeved between a driven wheel of the driven wheel assembly and a driving wheel of the motor assembly, and the transitional groove assembly driven by a motor in the motor assembly slide back and forth on the bottom plate assembly; the top face of a bottom plate of the bottom plate assembly is a bevel; the connecting line between the axis of the driven wheel and that of the driving wheel is parallel to the bevel. With the adoption of the bevel and the synchronous belt device which is parallel to the bevel, the synchronous belt is in an uptight state a