Double-passage lateral rigidity active hydropneumatic suspension

Abstract

The invention discloses a double-passage lateral rigidity active hydropneumatic suspension, which adopts a bilaterally symmetrical structure. The double-passage lateral rigidity active hydropneumatic suspension comprises a steering wheel, an angle synchronous control valve, a rigidity synchronous control valve, suspension cylinders, energy storage devices, control valves and pipelines. The suspension cylinders comprise piston rods, pistons, internal control valve sets, cylinder drums and seal holder rings. The interiors of the suspension cylinders comprise sub oil cavities and suspension cylinder inner cavities; and the sub oil cavities are completely isolated from the suspension cylinder inner cavities. The suspension cylinder inner cavities comprise cylinder drum inner cavities and piston rod inner cavities, which are in communication with each other via the internal control valve sets to form suspension cylinder inner cavity systems. The control valves and the energy storage devices are connected outside the sub oil cavities through the pipelines to form external control loops. The angle synchronous control valve is respectively connected with the control valves of the left and right external control loops to form a state control passage. The rigidity synchronous control valve is respectively connected with the cylinder drum inner cavities of the left and right suspension cylinder inner cavity systems to form a rigidity control passage. The two control passages are independent of each other and the included control loops / inner cavity systems are also independent of each other. The angle synchronous control valve and the rigidity synchronous control valve are synchronously controlled with the steering wheel.

Description

technical field [0001] This patent relates to a vehicle active suspension structure, and specifically discloses a dual-channel lateral stiffness active oil-air suspension. Background technique [0002] 1. Active and semi-active suspension [0003] Suspension is an important part of the vehicle chassis, located between the frame and the axle, undertakes the buffering and shock absorption function of the chassis to the ground, and has a significant impact on the ride comfort and handling stability of the vehicle. Suspension has several forms such as passive suspension, semi-active suspension, and active suspension, which reflect the degree of control over the chassis attitude, stiffness, damping and other mechanical properties as well as the vehicle's operating attitude. For ordinary vehicles, especially heavy-duty vehicles, the chassis usually adopts a passive suspension structure, the rigidity and damping structure are fixed, and the ride comfort and handling stability of t...

AI Technical Summary

Problems solved by technology

However, it is limited to the suspension components, the working capacity, control capacity, system accuracy and cost composition of the electronic control system, and is greatly restricted in the application of large vehicles and popular products.

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