Steel structure welding auxiliary tool for civil construction

The invention provides a steel structure welding auxiliary tool for civil construction, and relates to the technical field of steel structure welding assistance. Comprising a fixing block, a moving cavity is formed in the upper portion of the right side in the fixing block, a fixing cavity is formed in the left side in the fixing block, a moving opening is formed in the upper side of the inner wall of the moving cavity, and a threaded rod is rotationally connected to the left side of the inner wall of the moving cavity; the right end of the threaded rod penetrates through the right side of the inner wall of the moving cavity and extends to the right face of the fixing block, the rod wall of the threaded rod is in threaded connection with a moving block, and the top face of the moving block extends to the top face of the fixing block through the inner wall of the moving opening. Through the fixing of the equipment, the working intensity of holding the structure by an operator can be reduced, the safety of the