The invention relates to the technical field of commercial vehicles, in particular to a variable-pitch gear-ratio gear-shaped structure for a commercial vehicle steering gear box. The structure comprises a steering engine shell assembly and a steering engine side cover, the steering engine side cover is connected to the outer wall of one end of the steering engine shell assembly through screws. The outer wall of the end, perpendicular to the steering engine side cover, of the steering engine shell assembly is connected with a steering engine valve body through screws. The inner wall of the steering engine valve body is sleeved with a screw bearing; a steering screw is connected to the inner wall of the screw bearing through a bearing; the outer wall of the steering screw rod is in threadedconnection with a steering nut; a steering nut gear is arranged at one end of the steering nut; the steering nut gear comprises a first steering nut gear tooth and a second steering nut gear tooth, and a rocker arm shaft gear comprises a first gear tooth of the rocker arm shaft gear and a second gear tooth of the same. According to the invention, the output torque of the steering gear box can beincreased under the condition that assistance of a motor is not added, and the problem that the hands feels heavier and heavier when a steering gear mechanism is used for steering in the large direction is well solved.

    本发明涉及商用车技术领域,尤其为一种商用车方向机用变齿距变速比齿形结构,包括转向机外壳总成和转向机侧盖,所述转向机外壳总成的一端的外壁上螺钉连接有转向机侧盖,所述转向机外壳总成垂直于转向机侧盖的一端的外壁上螺钉连接有转向机阀体,所述转向机阀体的内壁上套接有螺杆轴承,所述螺杆轴承的内壁上轴承连接有转向螺杆,所述转向螺杆的外壁上螺纹连接有转向螺母,所述转向螺母的一端设有转向螺母齿轮,所述转向螺母齿轮包含有转向螺母第一轮齿和转向螺母第二轮齿,所述摇臂轴齿轮包含有摇臂轴齿轮第一轮齿和摇臂轴齿轮第二轮齿,本发明能够在不加电机助力的情况下加大方向机的输出力矩,很好解决了打大方向时,手感越来越沉的问题。


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    Titel :

    Variable-pitch gear-ratio tooth-shaped structure for commercial vehicle steering gear box


    Weitere Titelangaben:

    一种商用车方向机用变齿距变速比齿形结构


    Beteiligte:
    ZHU XINGWANG (Autor:in) / ZHANG BAOYI (Autor:in) / HU XIAOSHENG (Autor:in) / MAO JIANBING (Autor:in) / CHEN WENHONG (Autor:in)

    Erscheinungsdatum :

    2020-05-19


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge




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