Frame assembly

The invention discloses a frame assembly which adopts a design mode of a front aluminum alloy casting and a rear aluminum alloy casting, so that the number of parts needing to be connected is greatly reduced while the structural strength is improved, the assembly process is reduced, and the working efficiency is improved. The front frame assembly, the middle frame assembly and the rear frame assembly are connected in a split mode, when a front aluminum alloy casting and/or a rear aluminum alloy casting are/is damaged by a serious accident, the front aluminum alloy casting and/or the rear aluminum alloy casting can be directly replaced by a new front aluminum alloy casting and/or a new rear aluminum alloy casting, the safety of the vehicle is not affected, a second-hand vehicle can be prevented from greatly depreciating, and the service life of the second-hand vehicle is prolonged. And the economic loss is reduced. 本发明公开了一种车架总成，采用前铝合金铸件和后铝合金铸件的设计方式，在提高了结构强度的同时，大大减少了需要连接零件的数量，减少了组装工序，提高了工作效率。前车架总成、中车架总成和后车架总成采用