起重机是按照国际标准及可靠性要求设计的,但这不妨碍按市场需求走设计创新之路。目前十分强调的是高承载能力的起重机而要求其自重最轻,有关当局规定,起重机总重量愈重,则性能要求愈严格。现代设计采用结构自重轻和强度高的材料,因而就容易达到所要求的性能。一股情况下工地的地面条件较差,因而对起重机适应各种地形的能力的要求却提高 Cranes are designed according to international standards and reliability requirements, but this does not prevent the design innovation from going according to market demand. At present, it is highly stressed that the crane with high carrying capacity requires the lightest weight. The relevant authorities require that the heavier the total weight of the crane, the more stringent the performance requirements. The modern design uses materials with light weight and high strength, making it easy to achieve the required performance. In one case, the ground conditions at the site were poor and the requirements for the crane’s ability to adapt to various terrains increased