Equipotential connection tester with protection structure

The utility model relates to the technical field of equipotential connection testers, in particular to an equipotential connection tester with a protective structure, and adopts the technical scheme that the equipotential connection tester comprises a tester body, a connecting plate and a screw rod, fixing plates are respectively mounted at the front end and the rear end of one side of the tester body, and screw holes are respectively formed in the two fixing plates; the two screw rods are in meshed connection with screw holes of the two fixing plates correspondingly, bearings are installed on the sides, away from each other, of the two connecting plates correspondingly, limiting rods are welded to the sides, away from each other, of the two connecting plates above the two bearings correspondingly, and fixing clamps are installed on the opposite sides of the two connecting plates correspondingly at equal intervals; the four corners of the front end of the tester body are respectively provided with a fixing bl