This application relates to a longitudinal
welding device for steel strips, comprising a first platform, a second platform, a horizontal adjustment mechanism, a clamping mechanism, and a
welding mechanism. The first platform is equipped with rollers, and the second platform is vertically raised and lowered via a
hydraulic cylinder. This allows for switching between states where the rollers
expose the steel strip for convenient loading and unloading, and where the platform is raised to provide rigid
welding support. Horizontal adjustment mechanisms are located on both sides of the device, adjusting the longitudinal wheel
assembly via handwheel and screw drive to achieve precise
lateral positioning of the steel strip. The left and right clamps of the clamping mechanism, in conjunction with the lower clamp with length markings, complete the
butt welding positioning of the steel strip. The welding mechanism, through gear and rack transmission, drives the
welding torch to continuously move longitudinally along the
weld seam for welding. A surrounding
cooling chamber is installed inside the clamps. Compared with existing technologies, this equipment enables rapid positioning and stable welding of the steel strip, with a smooth operation process, effectively avoiding
thermal deformation of the clamps, improving welding accuracy and production efficiency, and is suitable for longitudinal
butt welding operations of various types of steel strips.