Large-scale cylinder type container and long pipe trailer steel cylinder eddy current internal detection device

The invention relates to the technical field of gas cylinder type structure pressure container detection, and discloses a large-scale cylinder type container and long pipe trailer steel cylinder eddycurrent internal detection device, which comprises: a detection rod, wherein the detection rod comprises a detection rod main body and a plurality of extension rods which are connected with each other; a chuck detachably connected with the cylinder opening of a large-scale cylinder type container or a long pipe trailer steel cylinder; a circumferential rotating mechanism capable of driving the detection rod to rotate in the circumferential direction; an axial driving mechanism for clamping the detection rod and controlling the detection rod to move axially; and a detection mechanism comprisinga rocker arm assembly, wherein the rocker arm assembly is rotatably connected to one side of the detection rod, a detection probe is installed on the rocker arm assembly, a spring telescopic assemblyis arranged on the detecti