国内外大型起重机的发展状况

Based on construction requirement,development of domestic and overseas largecranes used in lifting construction is fast.You can find the cranes of every tonnage class in the market.And the demand of large cranes is increasing.The cranes of light weight,strong loading ability and otheradvantages appeared successively.New structures extend the work place.New combinations of arm have comeforth.What is more,some cranes can install and take down all by itself.Automation and electronictechnology have been applied in its control system.And a mixed crane has the advantages of both the crawlerand wheel cranes.In addition,the domestic market of cranes has strong potential.The enterprises ofdomestic capital have made great progress.