Automatic welding workstation for railway wagon box type center sill plate

The invention discloses an automatic welding workstation for railway wagon box type center sill plates. An automatic welding robot is adopted and comprises a welding robot walking system and a plate fixing and rotating displacement mechanism. The plate fixing and rotating displacement mechanism is of a bearing and rotatable structure and comprises a rotating displacement machine base and a fixing support mechanism. The rotary positioner base is a fixedly arranged bearing mechanism and is provided with a driving device; the fixing support mechanism is composed of a fixing frame and a clamping clamp arranged on the plane of the fixing frame and used for clamping and fixing plates, a long-strip-shaped groove hole penetrating through the surface of the frame is formed in the longitudinal middle of the fixing frame, and rotating shafts are arranged at the two ends in the same longitudinal axis. And a rotating shaft support of the fixed bracket mechanism is arranged on the rotary positioner base and is in driving c