Gantry crane metal structure material introduced

     Universal  gantry crane  metal structure mainly refers to the main beam, legs, lower beam and so on. Metal structure material is Q235 by shot blasting, rust treatment.
    (1) metal structure comprises a box-shaped main beam, four legs, two lower beam components. For the lower beam girder hoist operation. A buffer in the main beam ends butting heads, GM girder gantry crane with four legs rigidly connected to the upper part, the lower end of the lower leg beams rigidly connected to two lower beams of the installation of a traveling mechanism.
   (2) for the box girder structure, the bottom plate, the web, and large and small ribs, longitudinal ribs and other components, has good stiffness and strength, the main beam with upper camber across the middle and upper camber control In (1.1/1000 ~ 1.4/1000) S. maximum camber can be controlled in the range of mid-span S/10. Loaded girder natural frequency greater than 2Hz.
   (3) Universal gantry crane traveling mechanism with four running wheels mounted on the lower ends of beams, two of which are active wheels, two passive wheels, using two independent drive unit respectively symmetrical drive.
       For universal overhead gantry crane  provides raw steel, welding material must have a certificate of compliance or the original warranty book, all steel must undergo a rigorous pre-treatment. Assembling structural parts before welding, depending on the size of the cutting, respectively, with CNC cutting, imitation wood cutting or general cutting, shearing materials used for general cutting. Major welds using CO2 mixed gas welding, automatic welding and so on. Butt weld with automatic welding, weld flaw detection according to design requirements.