Multidirectional fretting wear equipment for heat transfer tubes of steam generator

The utility model discloses multidirectional fretting wear equipment for heat transfer tubes of a steam generator. The equipment consists of a frame, a driving device, a leveling lifting system and a data acquisition control system, wherein the structure of a test piece driving device is as follows: the upper end of a piezoelectric ceramic actuator is fixedly connected with a middle beam, the lower end of the piezoelectric ceramic actuator is connected with an upper fixture for clamping a blocky test piece through a flexible joint, a connecting rod and a force transducer in sequence, and a displacement sensor is arranged between the upper fixture and the middle beam; the structure of the leveling lifting system for the heat transfer tubes is as follows: an angular displacement platform is fixed on a base, a lifting platform is fixed on the angular displacement platform, a test piece supporting plate is arranged on the lifting platform, two cylindrical test pieces with equal diameters are arranged closely on t