Welding robot for pickup truck side bottom beam

The utility model discloses a welding robot for a side bottom beam of a pickup truck, which comprises a supporting cross frame, a mounting bottom plate is connected to the supporting cross frame in afront-back sliding manner, a lifting mechanism is connected to the mounting bottom plate in a left-right sliding manner, and a welding device is fixedly connected to the top of the lifting mechanism;the lifting mechanism comprises a welding fixing seat and a lifting fixing base which are correspondingly arranged in parallel up and down; supporting vertical plates are symmetrically arranged between the two sides of the lifting fixing base and the two sides of the welding fixing base, first supporting arms are hinged to the lower portions of the supporting vertical plates, and the other ends ofthe first supporting arms are hinged to the lifting fixing base. Second supporting arms are hinged to the upper portions of the supporting vertical plates, and the other ends of the second supportingarms are hinged to welding