Device and method for measuring vibration characteristics of rotary propeller shaft

The invention relates to a device for measuring vibration characteristics of a rotary propeller shaft. A plurality of vibration acceleration sensors are fixed on the surface of a shaft body; a vibration acceleration sensor data acquisition module is arranged beside each vibration acceleration sensor in the axial direction, and the vibration acceleration sensor data acquisition module and the vibration acceleration sensor are connected through a wire; the force sensor is installed at the center of the loading end face of the shafting, the excitation device is installed on a loading test platform of the loading end face, and the force sensor and the excitation device are located on the same axis. The force sensor data acquisition module, the wireless switch and the data processor are installed on the instrument test bench. The force sensor is connected with the force sensor data acquisition module through a wire. Each data acquisition module is in communication connection with the wireless switch through a wire