A multi-link independent suspension for commercial vehicle drive axle

Abstract

Disclosed is a multi-connecting-rod independent suspension for a drive axle of a commercial vehicle. The multi-connecting-rod independent suspension for the drive axle of the commercial vehicle comprises an auxiliary vehicle frame assembly used for being connected with vehicle frame longitudinal beams, an upper longitudinal pulling rod assembly, an upper horizontal pulling rod assembly, a lower horizontal pulling rod assembly, a stable pulling rod assembly, an absorber spring assembly and a bearing base assembly. The auxiliary vehicle frame assembly mainly comprises an auxiliary vehicle frame with a structure of double longitudinal beams and double horizontal beams. The auxiliary vehicle frame comprises an auxiliary vehicle frame front horizontal beam, an auxiliary vehicle frame back horizontal beam and an auxiliary vehicle frame longitudinal beam. The upper longitudinal pulling rod assembly mainly comprises upper longitudinal pulling rods. The upper horizontal pulling rod assembly mainly comprises upper horizontal pulling rods. The lower horizontal pulling rod assembly mainly comprises lower front horizontal pulling rods and lower back horizontal pulling rods. The stable pulling rod assembly mainly comprises stable pulling rods and stable pulling rod connecting bosses. The absorber spring assembly mainly comprises absorbers and springs. The multi-connecting-rod independent suspension for the drive axle of the commercial vehicle has the enough bearing capacity, the comfort performance and stability of the vehicles are improved, the weight of the drive axle is greatly reduced, the fuel oil economy is improved, the space layout can met the electrification demands of the commercial vehicle, and geometric deformation of the suspension does not happen under the extreme load.

Description

technical field [0001] The invention belongs to the field of automobiles, and in particular relates to a multi-link independent suspension for a drive axle of a commercial vehicle. Background technique [0002] At present, domestic commercial vehicle drive axles mostly adopt integral bridge and leaf spring independent suspension structure. The structure diagram is as follows: figure 1 As shown, its safety, stability, comfort are poor, the weight is large, and the fuel economy is poor. Nowadays, the road conditions of commercial vehicles are getting better and better, the road surface is relatively flat, and the load capacity is relatively large, so the range of motion of the suspension is not large, but there are high requirements for comfort and load capacity. With the needs of industry development and the electrification of commercial vehicles According to the trend, more and more commercial vehicle drive axles will be converted to independent suspension. [0003] In the...

AI Technical Summary

Problems solved by technology

[0007] Among the independent suspensions disclosed by CN203854440U and CN201685676U, it is a double-wishbone independent suspension structure, which has good suspension ride comfort, safety and comfort, but poor carrying capacity, and due to its shock absorber and spring elements Together they form a strut structure, which is easily deformed under a large force. In these two documents, the bearing capacity of the suspension cannot be guaranteed, and its application is only applicable to the front steering axle of commercial vehicles.

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