Longitudinal beam structure for commercial vehicle

Abstract

The invention provides a longitudinal beam structure for a commercial vehicle. A vehicle frame longitudinal beam is in a groove-shaped structure and is divided into an inner layer and an outer layer integrally formed by wrapping, the inner layer structure of the vehicle frame longitudinal beam is made of an aluminum alloy material to form a main beam, the outer layer of the vehicle frame longitudinal beam is made of steel, the steel structure of the outer layer is divided into an upper outer beam and a lower outer beam which are vertically and correspondingly arranged with a gap therebetween,the upper outer beam and the lower outer beam bend inward, the cross sections of the upper outer beam and lower outer beam are in 'L' shapes, and the 'L'-shaped structures of the upper outer beam andlower outer beam wrap the inner layer structure made of the aluminum alloy material and are integrally riveted with the inner layer structure made of the aluminum alloy material. The longitudinal beamstructure for the commercial vehicle has the advantages that a form of the combination of steel and aluminum is adopted, on the basis of meeting the intensity of a vehicle frame, the weight of the vehicle frame is reduced, the aluminum alloy material serves as a main body material of the vehicle frame longitudinal beam, the outer side of the longitudinal beam is riveted with the steel outer beamsin order to improve the intensity of the vehicle frame, and the thickness of the main beam made of the aluminum alloy material is greater than those of the upper outer beam and lower outer beam of the outer layer steel structure; the density of the aluminum alloy is less than that of a steel material, the density of the aluminum alloy is 2.8 g / cm<3>, the density of the steel material is 7.85 g / cm<3>, and therefore, the overall weight of the longitudinal beam is reduced.

Description

Technical field [0001] The invention relates to a longitudinal beam of a commercial vehicle, which is a lightweight design structure for the longitudinal beam of a frame, in particular to a longitudinal beam structure of a commercial vehicle. Background technique [0002] Commercial vehicles are mainly used for cargo transportation. Their load capacity is large, the working conditions are complex, and the frame is prone to breakage. At present, in order to improve the strength of the frame assembly, the thickness of the frame is increased. This method increases the weight of the frame and reduces The mass of the vehicle. [0003] With the rapid development of technology, the requirements for lightweight and reliability of commercial vehicles are becoming higher and higher, requiring higher strength and light weight for the frame. [0004] The application number 201720908400.1 discloses an aluminum alloy frame structure for a new energy vehicle, which can be easily assembled, can enh...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of large vehicle load and poor working conditions when the commercial vehicle transports goods, the load-carrying section of the frame is prone to breakage and bending during use; the invention proposes a lightweight structure design for the longitudinal beam of the commercial vehicle. Commercial vehicle longitudinal beam structure

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