The invention discloses a suspension valve group, a hydro-pneumatic suspension lifting and leveling system and an all-terrain crane. The suspension valve group comprises a working oil port A, a working oil port B, an oil return port T, an oil inlet P and a port SP used for being connected with an energy accumulator. The suspension system further comprises a suspension ascending control valve, a suspension descending control valve, a suspension rapid ascending control valve, a suspension slow ascending damping hole, a suspension slow descending damping hole and a suspension rapid descending control valve. The suspension lifting control valve and the suspension slow-speed lifting damping hole are connected in series between a port P and a port A of the suspension valve group, and the suspension rapid lifting control valve and the suspension slow-speed lifting damping hole are connected in parallel; the suspension descending control valve and the suspension slow descending damping hole are connected in series and arranged between a T opening and an A opening of the suspension valve set, and the suspension rapid descending control valve and the suspension slow descending damping hole are arranged in parallel. One-key leveling and suspension lifting speed control are both considered, so that a vehicle can quickly lift a suspension to adjust the height of a vehicle body under complex road conditions, and the suspension operation efficiency and the vehicle passing performance are improved.

    本发明公开了一种悬架阀组、油气悬架升降调平系统及全地面起重机,所述悬架阀组包括工作油口A、工作油口B、回油口T口、进油口P和用于与蓄能器连接的SP口,还包括悬架升控制阀、悬架降控制阀、悬架快速升控制阀、悬架慢速升阻尼孔、悬架慢速降阻尼孔、悬架快速降控制阀;所述悬架升控制阀、悬架慢速升阻尼孔串联设置于悬架阀组P口与A口之间,悬架快速升控制阀与悬架慢速升阻尼孔并联设置;所述悬架降控制阀与悬架慢速降阻尼孔串联设置于悬架阀组T口与A口之间,悬架快速降控制阀与悬架慢速降阻尼孔并联设置。本发明兼顾一键调平及悬架升降速度的控制,使得车辆在复杂路况下可以快速升降悬架调整车身高度,提升悬架操作效率及车辆通过性能。


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    Title :

    Suspension valve group, hydro-pneumatic suspension lifting and leveling system and all-terrain crane


    Additional title:

    一种悬架阀组、油气悬架升降调平系统及全地面起重机


    Contributors:
    ZHANG JINXING (author) / MA YUNWANG (author) / YU ZHONGTAI (author) / QIN HENG (author) / ZHANG GUOHE (author) / ZHANG HENG (author) / LI WEI (author)

    Publication date :

    2024-11-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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