The invention discloses a three-gear speed change axle power transmission system of a pure electric heavy commercial vehicle. The three-gear speed change axle power transmission system comprises a driving motor, a speed changer, a speed reducer and a differential mechanism, the transmission is composed of three parallel shafts, four gear pairs and two gear shifting executing mechanisms. The first shaft comprises a first shaft section and a second shaft section which are coaxially arranged, the first shaft section is connected with the output shaft end of the driving motor, the first shaft section is provided with a combination tooth A, and the combination tooth A is connected with the second shaft section; the four gear pairs are respectively a gear pair I, a gear pair II, a gear pair III and a gear pair IV; the two sets of gear shifting executing mechanisms are the first set of gear shifting executing mechanism and the second set of gear shifting executing mechanism respectively. The high-integration multi-stage three-gear transmission composed of the three parallel shafts, the four gear pair mechanisms and the two gear shifting executing mechanisms is adopted, the large speed ratio is achieved, and meanwhile the high-integration multi-stage three-gear transmission has the advantages of being short in axial width, small in motor front overhang, compact in structure, light in weight and capable of saving space.

    本发明公开了一种纯电动重型商用车三档变速桥动力传动系统,包括驱动电机、变速器、减速器和差速器;所述变速器由三根平行轴、四套齿轮副和两套换档执行机构组成;第Ⅰ轴包括同轴设置的第Ⅰ轴段和第Ⅱ轴段,第Ⅰ轴段与驱动电机的输出轴端相连,第Ⅰ轴段设置有结合齿A,结合齿A与所述第Ⅱ轴段接合;四套齿轮副分别为齿轮副Ⅰ、齿轮副Ⅱ、齿轮副Ⅲ和齿轮副Ⅳ;两套换档执行机构分别为第Ⅰ套换档执行机构、第Ⅱ套换档执行机构;通过采用三根平行轴、四套齿轮副机构和两套换档执行机构组成的高集成多级三档变速器,实现大速比的同时,具有轴向宽度短、电机前悬小、结构紧凑、重量轻、节省空间的优点。


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    Title :

    Three-gear speed change axle power transmission system of pure electric heavy commercial vehicle


    Additional title:

    一种纯电动重型商用车三档变速桥动力传动系统


    Contributors:
    HU XUANHUA (author) / YANG BOHUA (author) / GAO GANGGANG (author) / QU CHUANRUI (author)

    Publication date :

    2022-11-08


    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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