The invention provides an electro-hydraulic proportional adjusting device and method for a lorry-mounted crane. According to the method, an electro-hydraulic flow adjustment value of the lorry-mountedcrane and the opening degree adjustment information of an electro-hydraulic proportional valve are sequentially determined according to the actual hydraulic action parameters of the current hydraulicaction process of the lorry-mounted crane; and a proper adjustment electric signal is formed according to the opening degree adjustment information so as to drive the electro-hydraulic proportional valve to perform an adaptive opening degree adjustment action, so that a corresponding electro-hydraulic proportional adjustment effect is obtained, the adjustment electric signal directly applied to the electro-hydraulic proportional valve is determined in a closed-loop adjustment mode, a closed-loop feedback adjustment loop from hydraulic action parameters to the adjustment electric signal is formed so that the influence of external factors on electro-hydraulic proportional adjustment can be effectively reduced, and the accuracy and stability of electro-hydraulic proportional adjustment are improved.

    本发明提供了随车起重机的电液比例调整装置与方法,其以随车起重机当前液压动作过程的实际液压动作参数为依据依次确定随车起重机的电液流量调整值和电液比例阀门的开口度调整信息,再根据该开口度调整信息形成合适的调节电信号,以此驱动该电液比例阀门进行适应的开口度调整动作,从而获得相应的电液比例调整效果,其通过闭环调整的方式来确定直接施加到电液比例阀门的调节电信号,并且形成从液压动作参数到调节电信号的闭环反馈调整回路,这样能够有效地降低外界因素对电液比例调整的影响和提高电液比例调整的精确性和稳定性。


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    Title :

    Electro-hydraulic proportion adjusting device and method for lorry-mounted crane


    Additional title:

    随车起重机的电液比例调整装置与方法


    Contributors:
    ZHENG HUA (author)

    Publication date :

    2021-01-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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