Detection device and detection method of engine input shaft

The invention provides a detection device and a detection method for an engine input shaft, and belongs to the technical field of detection devices.The device comprises an eccentricity detection mechanism, a helical tooth deflection angle measurement mechanism and an axial measurement mechanism, the eccentricity detection mechanism comprises a supporting rod and a balancing platform, and the cross section of the supporting rod is an equilateral triangle; a supporting groove is formed in the lower end face of the balancing table, the cross section of the supporting groove is a 120-degree isosceles triangle, a fixing shaft is arranged on the upper end face of the balancing table, a connecting frame is arranged on the lower end face of the balancing table, a connecting shaft is arranged at the bottom of the connecting frame, and tension meters are arranged on the two sides of the lower end of the connecting shaft. According to the invention, eccentricity detection can be carried out on the engine input shaft, th