The invention discloses a suspension valve group, an oil gas suspension system and an all-terrain crane. The suspension valve group comprises suspension valve group A, B and SP ports; the first electromagnetic directional valve is connected between a port B of the suspension valve group and an oil inlet P of the hydraulic oil tank and is used for controlling on-off of oil entering a small cavity of the suspension oil cylinder; the second electromagnetic directional valve is connected between an A port of the suspension valve group and an oil inlet P of the hydraulic oil tank and is used for controlling on-off of oil entering a large cavity of the suspension oil cylinder; the third electromagnetic directional valve is connected between an A port of the suspension valve group and an oil return port T of the hydraulic oil tank and is used for controlling the on-off that oil in a large cavity of the suspension oil cylinder flows back to the hydraulic oil tank; the suspension elastic and rigid switching valve is connected between a port A of the suspension valve group and an oil return port T of the hydraulic oil tank and is used for controlling on-off of oil interaction between a large cavity of the suspension oil cylinder and the energy accumulator; and the fourth electromagnetic directional valve is connected between the port B and the port SP of the suspension valve group and is used for controlling the oil liquid interchange and disconnection between the small cavity of the suspension oil cylinder and the energy accumulator. According to the scheme, after the vehicle is supported, the vehicle has the lifting suspension function.

    本发明公开了一种悬架阀组、油气悬架系统及全地面起重机,悬架阀组包括悬架阀组A、B、SP口;连接在悬架阀组B口与液压油箱进油口P之间的第一电磁换向阀,控制进入悬架油缸小腔油液的通断;连接在悬架阀组A口与液压油箱进油口P之间的第二电磁换向阀,控制进入悬架油缸大腔油液的通断;连接在悬架阀组A口与液压油箱回油口T之间的第三电磁换向阀,控制悬架油缸大腔油液流回液压油箱的通断;连接在悬架阀组A口与液压油箱回油口T之间的悬架弹刚性切换阀,控制悬架油缸大腔与蓄能器油液交互的通断;连接在悬架阀组B口与SP口之间的第四电磁换向阀,控制悬架油缸小腔与蓄能器油液交互通断。本方案能够实现车辆支车后车辆具备升降悬架功能。


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    Title :

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


    Additional title:

    一种悬架阀组、油气悬架系统及全地面起重机


    Contributors:
    ZHANG JINXING (author) / HOU YONG (author) / YU ZHONGTAI (author) / SUN JIANHUA (author)

    Publication date :

    2023-06-27


    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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