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起重机械主要由金属结构、机构、零部件和电控系统四部分组成。金属结构主要指以钢材为原料轧制的型材和板材作为基本元件,通过焊接、螺栓或铆钉连接等方式,按一定的规则连接起来制成能够承受外载荷的结构。重型起重机械金属结构的重量可达整机重量的90%,是名符其实的起重机械骨架;机构、零部件和电控系统均可以通过改造或维修予以更换并继续使用,因此金属结构的质量直接影响整机的
Lifting machinery mainly by the metal structure, institutions, parts and electronic control system composed of four parts. Metal structure mainly refers to the steel as raw material rolling profiles and plates as the basic components, by welding, bolts or rivets connection, according to certain rules connected to make the structure can withstand external load. Heavy lifting machinery metal structure of the weight of up to 90% of the weight of the machine, is truly a lifting skeleton; institutions, parts and electronic control system can be modified or repaired to be replaced and continue to use, so the metal structure The quality of a direct impact on the machine