Four-bar and double-air bag air suspension device

Abstract

The invention discloses a four-bar and double-air bag air suspension device. The four-bar and double-air bag air suspension device comprises two parallel longitudinal vehicle frame beams, a transverse vehicle frame beam with the two ends connected to the two longitudinal vehicle frame beams respectively, a lower suspension arm support installed below the front ends of the longitudinal vehicle frame beams, an axle with the two ends fixed to the positions below the two longitudinal vehicle frame beams respectively, a lower lower suspension arm and oscillating damper support with the two ends rotationally installed on the lower suspension arm support and the axle through hinge pins respectively, two air bags and two damping limiting devices, wherein the axle is perpendicular to the two longitudinal vehicle frame beams, the upper ends of the air bags are connected with the longitudinal vehicle frame beams to be fixed, and the lower ends of the air bags and the lower support are fixed. Two traction bars are independently connected and fixed through front traction bar supports and installation cushion plates, force can be transmitted more evenly after the two traction bars are stressed, and accordingly the situation that the transverse vehicle frame beam is damaged very easily under the working condition that a structure of a longitudinal traction bar and a transverse traction bar which are connected and fixed is adopted and is subjected to large lateral force is avoided.

Description

technical field [0001] The invention relates to the technical field of automobile suspension, in particular to an air suspension device. Background technique [0002] With the development of my country's economy, passenger cars and special-purpose vehicles have put forward higher requirements for handling stability, comfort, ride comfort and safety, which has greatly promoted the domestic air suspension market. In addition, the research and understanding of the road surface damage mechanism of heavy-duty vehicles is further deepened, the government attaches great importance to expressway maintenance, and the restriction of overloading is highly valued in various parts of the country, which will further expand the application of air suspension in the heavy-duty vehicle market. At present, for the four-link two-airbag air suspension that matches the wide frame structure, and for the arrangement of the upper thrust rod, most of the domestic or imported ones adopt the structure ...

AI Technical Summary

Problems solved by technology

At present, for the four-link two-airbag air suspension matched with the wide frame structure, for the arrangement of the upper thrust rod, most of the domestic or imported ones adopt the structure of longitudinal thrust rod + lateral thrust rod. In this structure, the lateral thrust rod is connected to the axle. It is easy to cause damage to the beam under the condition of large lateral force, which has a great impact on the reliability of the air suspension and even the whole vehicle

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