The invention discloses a variable-speed-ratio drive axle which comprises a main speed reducer, a planetary gear transmission mechanism, a differential mechanism and a gear shifting mechanism. The planetary gear transmission mechanism comprises a sun gear, a planet gear, a planet carrier and a gear ring; the differential mechanism comprises a half axle gear and a differential gear; the input end of the main reducer is connected with the transmission shaft; the output end of the main reducer is connected with a rotating shaft of the sun gear; one end of the planet carrier is connected with a rotating shaft of the differential gear; when the gear shifting mechanism works at a first gear, the gear shifting mechanism is used for fixing the gear ring; and when the gear shifting mechanism works at the second gear, the gear ring is connected with the other end of the planet carrier. Thus, the gear shifting mechanism is used for controlling the motion state of the gear ring, the speed ratio of the planetary gear transmission mechanism is adjusted to be switched between the condition that the speed ratio is larger than 1 and the condition that the speed ratio is equal to 1, and therefore two-stage speed reduction is achieved in cooperation with the main speed reducer, or single-stage speed reduction is achieved only through the main speed reducer, and different working condition requirements are met through the variable speed reduction ratio. The invention further discloses a vehicle which has the beneficial effects mentioned above.

    本发明公开一种可变速比驱动桥,包括主减速器、行星齿轮传动机构、差速器、换挡机构;行星齿轮传动机构包括太阳轮、行星轮、行星架和齿圈;差速器包括半轴齿轮和差速齿轮;主减速器的输入端与传动轴相连,主减速器的输出端与太阳轮的转轴相连;行星架的一端与差速齿轮的转轴相连;换挡机构工作于第一档位时,用于将齿圈固定;换挡机构工作于第二档位时,用于将齿圈与行星架的另一端相连。如此,通过换挡机构对齿圈的运动状态控制,调整行星齿轮传动机构的速比在大于1和等于1两种情况进行切换,从而联合主减速器实现二级减速,或仅通过主减速器实现单级减速,以通过可变减速比适应不同的工况需求。本发明还公开一种车辆,其有益效果如上所述。


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    Title :

    Vehicle and variable-speed-ratio drive axle thereof


    Additional title:

    一种车辆及其可变速比驱动桥


    Contributors:
    YE YIXIAN (author)

    Publication date :

    2023-09-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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