The utility model relates to an integrated frame
tail cross beam matched with a heavy
truck tractor, and aims to design a heavy
truck frame light-weight cross beam for redundancy
elimination optimization. On the basis of an existing cross beam
assembly formed by bending a plurality of
metal plates and connecting the
metal plates through bolts, redundancy
elimination optimization is conducted on materials, the weight of materials of overlapped parts in the cross beam
assembly and the weight of standard parts are reduced, and the purpose of light weight of a frame is achieved. A
metal plate with holes punched and outlines
cut in advance is integrally formed through step-by-step die
stamping, the three surfaces formed through
stamping are connected with a frame longitudinal beam and comprise the
upper wing face, the side breadth face and the
lower wing face,
lightening holes are punched in the side breadth face right ahead, and the other faces are filled with installation holes. And a weight reduction space is reserved between the left side breadth, the right side breadth, the right front side breadth and the
lower wing surface. The weight of the whole heavy
truck is further reduced, so that the fuel economy of the whole truck is improved.