Heavy-load electric vehicle chassis

Abstract

The invention discloses a heavy-load electric vehicle chassis, which comprises a frame, wherein the frame consists of a left single longitudinal beam, a right single longitudinal beam and a cross beam, wherein the left single longitudinal beam and the right single longitudinal beam are connected through the cross beam; the left single longitudinal beam comprises an upper left longitudinal beam and a lower left longitudinal beam, the upper left longitudinal beam and the lower left longitudinal beam are connected through a left vertical beam and a left oblique beam, and the partial left vertical beam and the left oblique beam form a triangle with the upper left longitudinal beam or the lower left longitudinal beam; the right single longitudinal beam comprises an upper right longitudinal beam and a lower right longitudinal beam, the upper right longitudinal beam and the lower right longitudinal beam are connected through a right vertical beam and a right oblique beam, and the partial right vertical beam and the right oblique beam form a triangle with the upper right longitudinal beam or the lower right longitudinal beam; the cross beam comprises a front cross beam, a middle cross beam and a rear cross beam; and spring plates are arranged below the left single longitudinal beam and the right single longitudinal beam, and tyres are arranged outside the left single longitudinal beam and the right single longitudinal beam. The chassis has the advantages of simple structure, uniform stress of the frame, strong bearing capacity of the frame and long service life, can ensure that the vehicle runs stably, and can greatly improve the safety of the vehicle.

Description

technical field [0001] The invention belongs to the technical field of vehicle engineering, in particular to a chassis of a heavy-duty electric vehicle. Background technique [0002] With the development of the economy and the advancement of science and technology, the market's requirements for the performance of automobiles continue to increase. However, automobiles powered by internal combustion engines pollute the atmosphere seriously, and are limited by resources. They cannot continue the existing requirements and will face being rejected. The trend of being phased out and replaced by electric vehicles. The chassis of traditional internal combustion engine vehicles is only designed according to the maximum load-carrying weight, while electric vehicles must increase the capacity of the power battery pack in order to increase the mileage. operating efficiency. [0003] As we all know, my country's commercial vehicles adopt unlimited overloading methods to meet various be...

AI Technical Summary

Problems solved by technology

The chassis of traditional internal combustion engine vehicles is only designed according to the maximum load-carrying weight, while electric vehicles must increase the capacity of the power battery pack in order to increase the mileage. operating efficiency

[0003] As we all know, my country's commercial vehicles adopt unlimited overloading methods to meet various benefits during operation, and the existing non-load-bearing body and chassis will be deformed to varying degrees in continuous operation under such an overloaded state, resulting in chassis failure. The girder is twisted or bent, and the vehicle appears to be tilted on one side or bottomed out in the middle under full load, which poses a great potential safety hazard

[0004] In addition, the existing non-load-bearing vehicle chassis are all in the form of channel steel, that is, the longitudinal beams and multiple beams are riveted together. Under the full load state, the chassis mainly bears the load on the corresponding chassis points according to the position of the heavy objects, and cannot be evenly distributed. At each point of the chassis, under the bumpy road, the load-bearing points bear the pressure of geometric multiples, which causes fatigue deformation of the chassis girder over time; at the same time, the channel steel beam structure design of the chassis cannot bear the load caused by the vehicle turning or bumping left and right. Lateral side stress leads to twisting and deformation of the channel steel beam, short service life of the vehicle chassis and poor bearing capacity

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