The invention relates to a variable-pitch variable-gear-ratio tooth-shaped structure for a commercial vehicle steering gear box, which comprises a screw rod, the periphery of the screw rod is sleeved with a nut matched with the screw rod to work, the bottom of the nut is connected with a rack, the bottom of the rack is provided with a driven gear matched with the rack to work, and a rotating shaft is inserted into the driven gear. The peripheries of the two ends of the rotating shaft are sleeved with first bearing seats correspondingly, the peripheries of the first bearing seats are fixedly sleeved with fixed rings, the periphery of the rotating shaft is further sleeved with movable rings, an annular protrusion is connected to the driven gear, and a power-assisted steering module is arranged at the end of the screw. In the process that people use the steering gear box to steer, the rotating hand feeling of a steering wheel can be automatically adjusted through the power-assisted steering module according to the running speed of an automobile, and therefore the situation that in the automobile driving process of people, due to the fact that the steering hand feeling of the steering wheel is light, the direction is deviated is effectively avoided; and by controlling the steering hand feeling, people are reminded of driving safety at any time, so that the driving safety of the automobile is greatly improved.

    本发明涉及一种商用车方向机用变齿距变速比齿形结构,包括螺杆,螺杆的外周套设有与其相配合工作的螺母,螺母的底部连接有齿条,齿条的底部设有与其相配合作业的从动齿轮,从动齿轮的内部插设有转轴,转轴的两端外周均套设有第一轴承座,第一轴承座的外周套接固定有固定环,转轴的外周还套设有活动环,从动齿轮上连接有环形凸起,螺杆的端部设有助力转向模组。人们在使用本方向机进行转向的过程中,通过助力转向模组能够根据汽车行驶速度自动的对方向盘转动手感进行调整,从而有效的避免了人们在驾驶汽车的过程中,因方向盘转向手感较轻而导致方向打偏的情况发生,通过控制转向的手感,时刻提醒人们行车的安全,从而大大提升汽车行驶的安全性。


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    Title :

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


    Additional title:

    一种商用车方向机用变齿距变速比齿形结构


    Contributors:

    Publication date :

    2022-07-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / F16H Getriebe , GEARING



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