The invention relates to a two-gear speed reducer for an integrated electric drive axle of a heavy truck, which comprises a planetary speed reducing mechanism, a gear shifting structure and an intermediate shaft gear, the planetary speed reducing mechanism comprises an input shaft gear, a gear ring and a planet carrier, the planet carrier is provided with a planet wheel, the planet wheel is respectively connected with the input shaft gear and the gear ring, power is transmitted from a motor, and the gear shifting structure is connected with the intermediate shaft gear. The input shaft gear is transmitted to the planetary speed reduction mechanism, and the output of a planetary carrier is used as primary speed reduction output; the gear shifting structure is connected with the planetary speed reduction mechanism, the intermediate shaft gear is connected with the gear shifting structure, and output of the gear shifting structure serves as secondary speed reduction output. The intermediate shaft gear is meshed with a differential gear to serve as three-stage speed reduction output, and power is transmitted to the two sides of an axle through a differential to be output. A sun gear input shaft and a planet carrier output coaxial line of the planetary speed reduction mechanism are arranged, a planet carrier output shaft serves as primary speed reduction output, meanwhile, a gear shifting gear serves as secondary speed reduction input, the overall structure is of a three-shaft arrangement mode, and the speed reduction space utilization rate is higher.

    本发明涉及一种重卡集成电驱桥用两挡减速器,包括行星减速机构、换挡结构和中间轴齿轮,行星减速机构包括输入轴齿轮、齿圈和行星架,行星架上设有行星轮,行星轮分别与输入轴齿轮和齿圈连接,动力从电机传入,由输入轴齿轮传给行星减速机构,行星架输出作为一级减速输出;换挡结构与行星减速机构连接,中间轴齿轮与换挡结构连接,通过换挡结构的输出作为二级减速输出;中间轴齿轮与差速器齿轮啮合,作为三级减速输出,并通过差速器将动力传递到桥两边输出。通过太阳轮输入轴与行星减速机构行星架输出同轴线,行星架输出轴作为一级减速输出,同时布置换挡齿轮作为二级减速输入,整体结构三轴布置型式,减速空间利用率更高。


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    Title :

    Two-gear speed reducer for integrated electric drive axle of heavy truck


    Additional title:

    一种重卡集成电驱桥用两挡减速器


    Contributors:
    MING JUNJIAN (author) / CHU FENG (author) / SHI WEN'AI (author) / LAN CHANGYAN (author) / HUANG ZAILU (author) / XIONG WEI (author) / ZHANG WUGUAN (author) / YANG ZHENGCHAO (author) / SU CUIJUAN (author) / ZHUO SEKANG (author)

    Publication date :

    2024-03-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60B VEHICLE WHEELS , Räder für Fahrzeuge / 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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