Dual-chamber air springs for longitudinally interconnected air suspension

Abstract

The invention discloses a double-air-chamber air spring suitable for a longitudinal interconnection air suspension. The outermost part is an outer air chamber shell, the upper end of the outer air chamber shell is fixed and closely connected with an upper cover plate, the lower end is fixed and closely connected with a lower cover plate, and the upper cover plate, outer air chamber shell and lower cover plate are sealed to form an outer air chamber; the inside of the outer air chamber is provided with a piston sleeve, a piston and an inner air chamber shell; and the upper cover plate, inner air chamber shell, piston and lower cover plate are sealed to form an inner air chamber. The inner air chamber between the air springs of front and back axles of the vehicle is connected through the pipeline, thereby constituting the longitudinal interconnection air suspension; and the inner air chamber participates in the longitudinal interconnection, and the outer air chamber does not participate in the longitudinal interconnection, thereby greatly displaying the advantage of favorable running smoothness of the traditional interconnection air suspension, relieving the road shocks and improving the tire grounding performance. When the vehicle is in the dead load nonuniform distribution state, since the outer air chamber does not participate in the interconnection, pressure difference is generated between the outer and inner air chambers, thereby preventing the vehicle body from further pitching and ensuring the vehicle body to have certain inclination rigidity.

Description

technical field [0001] The invention relates to the technical field of automobile vibration reduction, in particular to an air spring used for an automobile longitudinal interconnected air suspension. Background technique [0002] Air springs are increasingly used in the automotive field due to their excellent damping properties and freely adjustable height. With the continuous improvement of people's requirements for vehicle ride comfort and handling stability, new suspension structures have emerged, and the interconnected air suspension is one of them. The air springs of the traditional air suspension are connected through pipelines, so that gas exchange can be performed between the air springs, forming an interconnected air suspension. Interconnected air suspension is divided into two types: horizontal interconnection and longitudinal interconnection. Among them, the air suspension that uses pipelines to connect the front and rear air springs on the same side of the vehi...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that after the air springs of the current air suspension are longitudinally interconnected, the pitching stiffness of the vehicle body is reduced close to zero, and the pitch angle of the vehicle body is aggravated when the static load is unevenly distributed, and proposes a dual-body spring suitable for the longitudinally interconnected air suspension. air chamber air spring

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