Nuclear power station reactor control rod rotating eddy current detection device

The invention discloses a nuclear power station reactor control rod rotating eddy current detection device which comprises a shell, a rotating middle shaft rotationally arranged in the shell, a rotating driving assembly used for driving the rotating middle shaft to rotate and a probe assembly installed on the rotating middle shaft. The driving wheel set is formed in an opening in the front end portion of the shell, the axial motor drives the driving wheel set to rotate, the guide wheel set is formed in an opening in the rear end portion of the shell, the guide wheel set comprises a plurality of guide wheels, and the encoder rotates along with one guide wheel. According to the external penetrating type rotating eddy current detection device with good universality, the external penetrating type rotating eddy current detection device can be driven by the axial motor to do up-down linear motion on the outer surface of the control rod, the position needing to be detected is recognized and positioned through the en