The welding robot workstation for the bottom frame of the paver is developed by our company in combination with the actual on-site usage scenario of our clients. The welding workstation consists of welding robot, three-axis truss, fixture and workpiece clamping platform, single-axis dual-drive positioner system for the head and tail frames, welding power supply, welding torch and wire cutting, wire feeding system, welding seam positioning and tracking system, etc.. Compared with sitting robot, gantry robot is more flexible, with higher weld accessibility and higher weld coverage. X axis of gantry rail + Y axis of robot moving rail + Z axis of robot lifting is configured, and the welding wire barrel and smoke recovery system are placed on the external platform, which is equipped with a ladder for easy access by personnel for quick maintenance and protection of the robot and dust collection unit.