The port is a transport hub with the sea and land transport equipment and conditions, for the safety of the ship. Is the assembly point and the water and land transportation hub and industrial and agricultural products and foreign trade import and export goods distribution center, berthing, loading and unloading cargo, passengers, supplementary provisions place. As the port is a natural interface to the hinterland and the ocean transportation (international air transport), people also take the port as a special node of the international logistics. Coastal port construction focus on coal, container, import iron ore, food, land, sea, sea, sea and other transport systems, in particular, to strengthen the construction of container transport system. Gantry (mobile lifting dragons door frame) is based on the need, handling equipment, warehouse import and export goods daily production in middle and small factory (the company), lifting to repair heavy equipment and material transport needs, developed new small barosaurus door frame. Applicable to the manufacture of mould, auto repair factory, mine, construction site and lifting occasions. The common used in building construction materials as transportation and construction personnel on, realize the lifting machinery. Can reduce manpower, reduce production and operating costs, improve work efficiency.