Lightweight chassis structure of low-floor electric coach

Abstract

The invention relates to the technical field of electric vehicles, in particular to a lightweight chassis structure of a low-floor electric coach. The front part of a dual-carling chassis main structure is connected with a front axle saddle through a group of beams, a dual-swing arm front suspension assembly is positioned and assembled on the front axle saddle, after being assembled, the dual-swing arm front suspension assembly is positioned above a carling horizontal structure zone, the rear part of the dual-carling chassis main structure is connected with front support boxes and rear support boxes through two groups of beams, front and rear pivots of a plate spring type rear axle assembly are positioned and assembled on the front and rear support boxes, after being assembled, the plate spring type rear axle assembly is also positioned above the carling horizontal structure zone, and the carling horizontal structure zone can serve as the in-coach floor support surface. The chassis main structure is simple and safe, the front and rear axle assemblies are conveniently assembled, the workspaces are not interfered, the height of the in-coach floor and the coach door stepping height are obviously lowered, and thus the height of the coach is lowered, so that the comfort of getting on and off the coach and the trafficability of the coach can be improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a light-weight chassis structure of a low-floor electric passenger car. Background technique [0002] Whether it is a traditional car or a new energy vehicle, the lightweight of the body has become a research hotspot, especially for electric vehicles, the significance of lightweight is greater, and the requirements for lightweight are higher. Aluminum alloy structures are widely adopted and different aluminum alloy bus body solutions have been invented, however, the chassis structure of most aluminum alloy buses still adopts steel structures. The main reasons are: 1) The chassis is subjected to complex forces, which must bear various loads from the road and the load inside the vehicle, so it is difficult to design the aluminum alloy chassis structure; 2) The space of the chassis system is complex. The chassis structure needs to be equipped with front suspension assembl...

AI Technical Summary

Problems solved by technology

The main reasons are: 1) The chassis is subjected to complex forces, which must bear various loads from the road and the load inside the car, so it is difficult to design the aluminum alloy chassis structure; 2) The space of the chassis system is complex

The chassis structure needs to be equipped with front suspension assembly, rear suspension assembly, steering assembly, energy assembly and power assembly, etc. The layout space and working space of these systems are complex, which leads to the design of the chassis structure to meet these space requirements. The complex space structure brings difficulties in design and manufacture; 3) The hard points of the chassis system are subjected to large and complex loads, resulting in the hard points of the support being designed with steel structures and welded to the chassis structure through welding processes

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