The invention belongs to the technical field of commercial vehicle steering columns, and discloses a pneumatic locking wedge type steering column which comprises a base and a wedge block, the base isfixedly arranged on a vehicle body, and a first rack is arranged on the base; the wedge block is fixedly arranged at the output end of the pneumatic driving mechanism, a second rack in the inclined direction of the inclined face is arranged on the inclined face of the wedge block, and a third rack is arranged on the vertical face opposite to the inclined face and meshed with an arc gear on the steering column pipe. And the pneumatic driving mechanism is configured to drive the wedge block to move, so that the second rack is engaged with the first rack to lock the steering column pipe or disengaged to unlock the steering column pipe. The pneumatic driving mechanism is adopted as a power source, the wedge block, the attached second rack and the attached third rack are adopted as a locking structure and a locking kinematic pair, the tooth meshing strength is larger, larger retention force can be provided, the manufacturing cost is low, the wedge block can supplement gaps caused by abrasion in real time, and the problem of clamping force attenuation is solved.

    本发明属于商用车转向柱技术领域,公开了一种气动锁紧楔式转向柱,包括基座和楔块,基座固设于车体上,基座上设有第一齿条;楔块固设在气动驱动机构输出端,楔块的斜面上设有沿斜面倾斜方向的第二齿条及与斜面相对的竖直面上设有第三齿条,第三齿条与转向柱管上圆弧齿轮啮合,气动驱动机构被配置为驱动楔块移动使得第二齿条与第一齿条啮合以锁止转向柱管,或解除啮合以解锁转向柱管。本发明采用气动驱动机构作为动力源,采用楔块以及附带的第二齿条和第三齿条作为锁紧结构与锁紧运动副,齿啮合力度更大,可以提供更大的保持力,制造成本较低,并且楔块能够实时补充磨损带来的间隙问题,解决了夹紧力衰减问题。


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    Title :

    Pneumatic locking wedge type steering column


    Additional title:

    一种气动锁紧楔式转向柱


    Contributors:
    WANG MINGMING (author) / PANG LISHEN (author) / LI PENG (author) / DU MENGYANG (author) / WEN SHENGZHUO (author)

    Publication date :

    2021-02-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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