The invention discloses a confluence proportional multi-way valve with rotation priority. The confluence proportional multi-way valve comprises a front pump oil inlet unit, a telescopic proportional control unit, a variable amplitude proportional control unit, a winch proportional control unit, a confluence switching control unit, a rotation proportional control unit and a rear pump oil inlet unit which are sequentially arranged. The displacement of a front pump of a hydraulic system where the confluence proportional multi-way valve is located is higher than that of a rear pump, when the system acts singly, the front pump supplies oil to the telescopic proportional control unit and the variable-amplitude proportional control unit, the rear pump supplies oil to the rotation proportional control unit, the front pump and the rear pump confluence supplies oil to the winch proportional control unit, and different flow requirements are provided for different actions. According to the before-valve proportional confluence control system based on the double-pump system, the telescopic variable-amplitude front pump supplies oil, the rotary rear pump supplies oil and the winch double pumps supply oil, so that height compound control among different actions can be realized, compared with traditional single-pump before-valve proportional confluence control, the anti-saturation performance is higher, and the control performance of the straight-arm lorry-mounted crane is effectively improved.

    本发明公开了一种回转优先的合流比例多路阀,包括依次设置的前泵进油联、伸缩比例控制联、变幅比例控制联、卷扬比例控制联、合流切换控制联、回转比例控制联及后泵进油联;合流比例多路阀所在液压系统的前泵排量高于后泵排量,系统单一动作时,前泵给伸缩比例控制联及变幅比例控制联供油,后泵给回转比例控制联供油,前后泵合流给卷扬比例控制联供油,为不同动作提供不同流量需求。本发明基于双泵系统的阀前比例合流控制系统,伸缩变幅前泵供油,回转后泵供油,卷扬双泵供油,可以实现不同动作间的高度复合控制,相较于传统的单泵阀前比例合流控制抗饱和性能更强,有效提升直臂随车起重机的控制性能。


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    Title :

    Confluence proportional multi-way valve with rotation priority and crane


    Additional title:

    一种回转优先的合流比例多路阀及起重机


    Contributors:
    YU XUAN (author) / SHANG XIAOHENG (author) / CHEN LEI (author) / REN LUYAO (author) / LI TAO (author) / XU GAOPING (author) / NING JIPING (author)

    Publication date :

    2024-10-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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