The invention discloses a stroke-controllable hydro-pneumatic suspension cylinder and a control method thereof.The stroke-controllable hydro-pneumatic suspension cylinder comprises a cylinder barrel, a piston rod, a piston, an internal control valve set, a sealing seat ring, an energy accumulator, a control valve, a gas-liquid booster pump and a flow control cylinder, the piston is arranged in the cylinder barrel, the piston rod is connected to the piston, and the piston rod is connected with the upper portion of the cylinder barrel through the sealing seat ring in a sealed mode; an inner cavity of the cylinder barrel is communicated with an inner cavity of the piston rod through a damping channel on the internal control valve group to form an independent suspension cylinder inner cavity system; a suspension cylinder inner cavity is defined by the cylinder barrel, the piston rod and the piston in the suspension cylinder, an auxiliary oil cavity is defined by the cylinder barrel, the sealing seat ring, the piston rod and the piston on the side wall of the waist portion of the suspension cylinder, and the auxiliary oil cavity is externally connected with a control valve and an energy storage device through pipelines to form an independent external control loop. A double-channel isobaric and synchronous control system structure is formed by the gas-liquid booster pump, the flow control cylinder and a constructed double-loop system, reliable and stable stroke control can be achieved, and meanwhile rigidity and height control is attached.

    本发明公开了一种可控行程油气悬挂缸及其控制方法,其包括缸筒、活塞杆、活塞、内控阀组、密封座圈、储能器、控制阀、气液增压泵和流量控制缸,缸筒内设置有活塞,活塞上连接有活塞杆,活塞杆与缸筒上部之间通过密封座圈密封连接,缸筒内腔和活塞杆内腔通过内控阀组上的阻尼通道连通,形成独立的悬缸内腔系统;缸筒、活塞杆和活塞在悬挂缸内部围成悬缸内腔,缸筒、密封座圈、活塞杆和活塞在悬挂缸腰部的侧壁间围成副油腔,副油腔通过管路外接控制阀和储能器,形成独立的外部控制回路。本发明通过气液增压泵和流量控制缸,与所构建的双回路系统形成双通道等压、同步控制的系统结构,能够实现可靠、稳定的行程控制,同时附带刚度与高度控制。


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    Title :

    Stroke-controllable hydro-pneumatic suspension cylinder and control method thereof


    Additional title:

    一种可控行程油气悬挂缸及其控制方法


    Contributors:

    Publication date :

    2024-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16F SPRINGS , Federn / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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