Automobile sheet metal part welding strength testing device

The utility model discloses an automobile sheet metal part welding strength testing device which comprises a strength testing machine, a rotating rod and a supporting rod, a sliding sleeve is arrangedabove the strength testing machine, a first fixing bolt is arranged at one end of the sliding sleeve, a rotating ring is arranged on one side of the first fixing bolt, and a second fixing bolt is arranged in the rotating ring. A stretching table is arranged above the second fixing bolt, threaded sleeves are arranged on the inner sides of the stretching table, sliding rails are arranged above thethreaded sleeves, sliding wheels are arranged in the sliding rails, clamping blocks are arranged on one sides of the sliding wheels, rotating shafts are arranged above the clamping blocks, and extension rods are arranged on the outer sides of the rotating shafts. A rotating wheel is arranged at one end of the extension rod, a tension hook is arranged on the outer wall of the rotating wheel, and abearing box is arranged bel