The invention discloses a rotary hydraulic system and a crane, and the rotary hydraulic system comprises a rotary working oil path which is connected between a rotary motor and a main valve; the pilot control oil way comprises a handle oil way provided with a hydraulic control handle and a brake pilot oil way connected to the rotary brake; the brake reversing valve is used for connecting or disconnecting the brake pilot oil way; and the remote control reversing valve is used for selectively guiding the hydraulic oil of the handle oil way or the brake pilot oil way to the hydraulic control end of the main valve. According to the integrated crane rotation hydraulic circuit with the remote control rotation function, a plurality of valve banks are integrated and optimized, and are communicated with one another through oil ducts in the valve bodies, so that handle control and remote control control can be realized, the number of hydraulic pipelines and oil leakage points are reduced, the simplicity and attractiveness of products are improved, and the integrated crane rotation hydraulic circuit with the remote control rotation function is suitable for large-scale popularization and application. And the use of control pipelines is greatly reduced, the action responsiveness is improved, and the rotation speed can be conveniently controlled during remote control operation.

    本发明公开了一种回转液压系统和起重机,回转液压系统包括回转工作油路,连接在回转马达与主阀之间;先导控制油路,包括设有液控手柄的手柄油路和连接至回转制动器的制动先导油路;制动换向阀,用于导通或截止所述制动先导油路;遥控换向阀,用于将所述手柄油路或所述制动先导油路的液压油择一地导向所述主阀的液控端。本发明的集成式带有遥控回转功能的起重机回转液压回路,将多个阀组集成于一体并进行优化,通过阀体内部油道相互连通,既可实现手柄操纵也可实现遥控操纵,减少了液压管路的数量和漏油点,提高了产品的简洁性和美观性,也极大减少了控制管路的使用,提高动作响应性,而且在遥控操纵时可方便地控制回转速度。


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    Titel :

    Rotary hydraulic system and crane


    Weitere Titelangaben:

    回转液压系统和起重机


    Beteiligte:
    CAO JIBING (Autor:in) / HE WEI (Autor:in) / HUANG ZHEN (Autor:in) / LIAO QIHUI (Autor:in) / XU QINGPING (Autor:in)

    Erscheinungsdatum :

    2022-11-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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