The invention discloses a portable magnetic span plate used for steel plate split joint and
welding. The portable magnetic span plate mainly consists of a
handle, two permanent magnetic suction discs and a span frame, wherein the span frame is connected with the two permanent magnetic suction discs, two permanent magnets are arranged in the permanent magnetic suction discs, the permanent magnetic discs are provided with a suction disc switch connected with one permanent
magnet, the
handle is provided with a triggering end matched with the suction disc switch, the fixation between the magnetic span plate and the
welding steel plate completely relies on the magnetic force generated by the permanent magnetic suction disc, the matching of other auxiliary equipment is not needed, and the use is flexible and convenient, so the work efficiency of the steel plate split joint in the construction process is improved. Because the
welding is not needed, no any mark is left on the surface of parent materials, any influence cannot be generated on the parent materials, any treatment is not needed, the
grinding work load in the construction process can be reduced, the production cost and the work intensity are reduced, the
operation safety factor is high, any potential safety
hazard cannot be caused, and the portable magnetic span plate is applicable to the fixation different parts in different connection forms during
butt joint, corner connection and the like of the
steel plates in the steel plate split welding.