Analysis of the new gantry crane and practicality of

   Gantry crane used in the structure of thin-walled steel profiles and profiled to reduce the structural seam stitching, improved fatigue resistance. Using a variety of high-strength low-alloy steel, new materials, improve the bearing capacity, improve force conditions, to reduce weight and increase the aesthetic appearance. Bridge  steel crane  bridge structure type mostly used box-four beam structure, main beam and side beams of high strength bolts, easy to transport and install.
      At the institutional level to further the development of new transmission parts, simplifying agency. "Triple play" operating agencies is the world's light, intermediate crane operating agencies of the mainstream, the motor, reducer and brake combined into one, with a compact, lightweight and beautiful, easy disassembly, easy to adjust, smooth running, matching range etc., have been widely applied to various foreign  bridge gantry crane  operation mechanism.
       To enable small and medium-tonnage crane trolley structure as simple as possible, while reducing the size of the height gantry crane, reducing wheel pressure, electric hoist abroad have been widely used as a lifting mechanism.
       In order to reduce weight, improve the bearing capacity, improving manufacturing conditions, increase product yield, components as far as possible to weld cast behalf, such as gearbox housings, volume reduction, pulleys and so welded structure.  hoist gantry crane  are used hardened gear reducer, to reduce weight, reduce the volume and improve the bearing capacity and increase service life.