桥式起重机主梁在制造的过程中,需要把钢板先焊成П型梁,它是用卡具或螺旋夹具将腹板压贴在隔板上进行点焊。过去,这工序需要四个人用手扳动螺旋扣,还要用大锤敲击和铁棒橇动,才能确保两腹板与隔板相互紧贴,然后由焊工焊紧。它的劳动强度大,工效低, Bridge crane in the manufacture of the main beam, the plate needs to be welded into the first beam Π, it is the fixture or screw clamp web pressure on the partition on the spot welding. In the past, this process required four people to manually turn the screw buckle, but also with a sledgehammer and iron sledge moving in order to ensure that the two webs and the partition close to each other, and then welded by the welder. It’s labor-intensive, low efficiency,