External mechanical induction type adjustable damping valve of oil-gas suspension

Abstract

The invention relates to an external mechanical induction type adjustable damping valve of an oil-gas suspension, which comprises an external mechanical induction type adjustable damping valve body, wherein an accumulator interface and an oil cylinder interface of the oil-gas suspension are arranged on the valve body; a mounting pole is arranged in the valve body, and a fixed valve and a floating valve are arranged on the periphery of the mounting pole; the floating valve is arranged between a compression limit spring and an extension limit spring in a suspended way; a fixed valve compression phase damping valve component and a fixed valve extension phase damping valve component are arranged at the two ends of the valve body of the floating valve respectively; a floating valve compression phase damping valve component and a floating valve extension phase damping valve component are arranged at the two ends of the valve body of the floating valve respectively; and a pre-stressing spring is arranged between a valve plate and a limit tray. The external mechanical induction type adjustable damping valve of the oil-gas suspension has the advantages that: the radiation is desirable; the outer diameter of a control valve element is small; the structure is simple; and the damping adjustment can be realized without electronic control system, and the reliability is high.

Description

Technical field: [0001] The invention relates to a damping element for an automobile suspension system, in particular to an external mechanical induction adjustable damping valve for an oil-air suspension used in the suspension system of a vehicle equipped with an oil-air suspension, and belongs to the field of mechanical structures. Background technique: [0002] Due to its nonlinear and gradually increasing stiffness characteristics, the oil-pneumatic spring has a good application prospect in special vehicles and off-road vehicles. It uses oil to transmit pressure, therefore, only need to add a proper damping device on the liquid path, the oil and gas spring can also be used as a damping element. Many oil-pneumatic suspensions do not design special damping elements, that is, the oil-pneumatic spring itself doubles as an elastic element and a damping element. The damping of this type of oil-pneumatic suspension mainly comes from two aspects. When the system reciprocates, d...

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Problems solved by technology

However, since this invention patent starts from the oil-gas shock absorber, there is such a problem that it must be provided with a special elastic element. If it is used as the elastic element itself, the part of the force originally borne by the elastic element will be completely absorbed by the oil-gas shock absorber. The spring shock absorber bears, which will inevitably increase the pressure of the system, and the piston area of ​​the oil-pneumatic spring shock absorber is determined by the piston area of ​​the modified shock absorber, which will be relatively small, which will make the pressure of the oil-pneumatic spring shock absorber very high. High, high requirements on the sealing of the system, and low reliability of the system

At the same time, this system requires special sensors and ECUs, which not only increases the cost of the system, but also reduces the reliability of the system.

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