Deviation preventing device of bending testing machine

The utility model relates to the technical field of bending testing machines, and provides an anti-deviation device of a bending testing machine, which is convenient for reducing the deviation condition of a wire during bending, and comprises a bending testing machine body, two support frames are arranged on the bending testing machine body, and the two support frames are connected with clamp brackets; a clamp cylinder is arranged between the two clamp supports, two fixing assemblies are detachably connected to the bottom end of the clamp cylinder, a supporting plate is arranged between the two fixing assemblies, two connecting plates are symmetrically connected to the supporting plate, two fixing plates are detachably connected between the two connecting plates, and two supporting blocks are arranged on the supporting plate. Four fixing strips are connected between the two supporting blocks and the two fixing plates, a plurality of supporting strips are fixedly connected to the top ends of the two fixing pla