Heavy truck frame assembly

Abstract

The invention discloses a heavy truck frame assembly. The heavy truck frame assembly comprises a transverse beam (1), a left longitudinal beam (2) and a right longitudinal beam (3). The left longitudinal beam (2) is connected with the right longitudinal beam (3) through the transverse beam (1). C-shaped section beams are adopted as the left longitudinal beam (2) and the right longitudinal beam (3). The left longitudinal beam (2) and the right longitudinal beam (3) are of a symmetric structure. Each of the left longitudinal beam (2) and the right longitudinal beam (3) is composed of a front bearing section (21), a connecting transition section (22) and a rear bearing section (23), wherein an upper plane of the front bearing section (21), an upper plane of the connecting transition section (22) and an upper plane of the rear bearing section (23) are located on the same horizontal plane, and the section height of the front bearing section (21) is smaller than that of the rear bearing section (23). The heavy truck frame assembly has the beneficial effects that the bearing capability is high, the anti-twisting capability is high, the overall mass is low, and the fuel economy is high.

Description

technical field [0001] The invention relates to a vehicle frame assembly, in particular to a heavy-duty truck frame assembly. Background technique [0002] Heavy-duty trucks are mainly used for cargo transportation, engineering construction, and special operations. The frame is the carrier of heavy-duty trucks and needs sufficient strength and rigidity to carry weight and withstand all forces and moments transmitted to it. Due to the demand for energy saving and environmental protection and the guidance of national policies, vehicle lightweight is imperative. For some heavy-duty vehicles for special operations, due to the poor working environment, there is a great torsion effect on the frame, so the frame needs to have sufficient torsion resistance. [0003] At present, most of the frame longitudinal beams 100 used in heavy truck frames at home and abroad are as follows: figure 1 The groove section shown; in order to ensure the bearing capacity and rigidity of the frame, p...

AI Technical Summary

Problems solved by technology

[0004] The single-layer channel frame longitudinal beam 100 used in the above-mentioned prior art has the disadvantage that the load-carrying capacity is small, and it is not suitable for heavy-duty trucks such as engineering vehicles and other heavy-duty trucks; the double-layer channel-section frame longitudinal beam 100 , although the carrying capacity is large, but the weight is large, so that the mass of the vehicle is greatly increased, and the fuel economy is poor; the closed box-section frame longitudinal beam 100 is adopted, the carrying capacity is large, but the weight is large, the fuel economy is poor, and the manufacturing process more complicated

The frame beam 200 of the prior art has poor torsion resistance, and failures such as fatigue cracking are prone to occur at bolts or rivets, and the reliability is poor

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