New energy automobile charging gun maintenance test bench

The invention provides a new energy automobile charging gun maintenance test bench. The test bench comprises a maintenance frame plate; the detection ring is erected above the overhaul frame plate; at least two groups of clamping units; each group of clamping unit comprises a concentric-square-shaped frame which sleeves and is slidably arranged on the detection ring, and one end of the inner side of the concentric-square-shaped frame abuts against the outer ring wall of the detection ring; the limiting assembly is arranged at one end, facing the outside of the ring, of the concentric-square-shaped frame and is used for fixing the relative position of the concentric-square-shaped frame and the detection ring; the linear driving assembly is erected in the concentric-square-shaped frame and drives a moving rod to move back and forth at the other end of the concentric-square-shaped frame; the back of the supporting plate is rotationally connected with the rod body of the moving rod; the clamping plate is erected