The invention relates to an inflatable box type telescopic arm and belongs to the technical field of mechanical equipment. The inflatable box type telescopic arm comprises a basic arm, a variable amplitude hydraulic cylinder and a telescopic hydraulic cylinder. The lower end of the basic arm is hinged to the variable amplitude hydraulic cylinder. The inflatable box type telescopic arm is characterized in that a second arm is connected with the basic arm through the telescopic hydraulic cylinder arranged outside the telescopic arm to realize telescopic motion; the upper end of the basic arm isfixedly connected with the telescopic hydraulic cylinder, and the other end of the telescopic hydraulic cylinder is fixedly connected with the second arm; the basic arm is connected with a rotary table on a lower vehicle through a pin hole formed in the basic arm; and the other end of the variable amplitude hydraulic cylinder hinged to the basic arm is connected with the rotary table to realize amplitude hydraulic actions of the telescopic arm. Compared with the prior art, the inflatable box type telescopic arm has the advantages that the inflatable box type telescopic arm is filled with high-pressure air; according to the characteristics of the air, the second arm is stressed uniformly, reinforcing ribs in some positions can be omitted, the thickness of a steel plate can be reduced, the weight of the whole telescopic arm is greatly reduced, and therefore, the bearing capacity can be increased.

    本发明涉及一种充气式箱型伸缩臂,属于机械装备技术领域,充气式箱型伸缩臂,包括基本臂、变幅液压缸、伸缩液压缸,基本臂的下端与变幅液压缸铰接,其特征在于:第二节臂与基本臂通过布置在伸缩臂外面的伸缩液压缸连接,从而实现伸缩动作,所述的基本臂的上端与伸缩液压缸固连,伸缩液压缸的另一端与第二节臂固连,所述的基本臂通过其上的销孔与下车上的转台相连;与基本臂铰接的变幅液压缸的另一端与转台相连,以实现伸缩臂的变幅动作。与现有技术相比,充气型伸缩臂由于内部充高压气体,因为气体自身的特性,第二节臂受力均匀,在可以省去一些位置加强肋的同时,也可以减小钢板的厚度,大大减少了整个伸缩臂的重量,从而可以提升承载能力。


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    Titel :

    Inflatable box type telescopic arm


    Weitere Titelangaben:

    一种充气式箱型伸缩臂


    Beteiligte:
    TENG RUMIN (Autor:in) / WANG XIN (Autor:in) / ZHANG RUI (Autor:in) / WANG TIANYU (Autor:in) / FAN CHUANPING (Autor:in)

    Erscheinungsdatum :

    2020-10-30


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66C Krane , CRANES



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