The invention belongs to the technical field of vehicles, and discloses a maintenance-free intermediate supporting structure, an intermediate transmission shaft assembly and a vehicle, the maintenance-free intermediate supporting structure comprises an intermediate shaft, a bearing, a bracket, a flange and an oil seal assembly, the intermediate shaft is provided with a grease cavity, and the grease cavity serves as a storage space for filling and storing lubricating grease when leaving a factory; a first oil conveying hole formed in the intermediate shaft is communicated with the grease cavity, the intermediate shaft is fixedly sleeved with the bearing, a second oil conveying hole formed in the bearing is communicated with the first oil conveying hole, a sealing cavity is formed between the first oil seal and the second oil seal, and the bearing is located in the sealing cavity. Lubricating grease stored in the grease cavity of the intermediate shaft enters the bearing through the first oil conveying hole and the second oil conveying hole, so that it is guaranteed that the lubricating grease in the inner cavity of the bearing is supplemented in time, high durability of the intermediate supporting structure is guaranteed, the maintenance-free effect is achieved, meanwhile, the weight of the intermediate shaft is gradually reduced, and the light weight effect can be achieved.

    本发明属于车辆技术领域,公开了免维护中间支承结构、中间传动轴总成及车辆,该免维护中间支承结构包括中间轴、轴承、托架、凸缘和油封组件,中间轴具有油脂腔,作为出厂时加注储备润滑油脂的储存空间,中间轴开设的第一输油孔与油脂腔连通设置,轴承固定套设于中间轴,轴承开设的第二输油孔连通于第一输油孔,第一油封和第二油封之间形成密封腔体,轴承位于密封腔体内,在传动轴高速旋转产生的离心力作用下,在密封腔体内,中间轴的油脂腔储存的润滑油脂通过第一输油孔和第二输油孔进入到轴承内,以保证轴承内腔的润滑脂获得及时补充,确保中间支承结构的高耐久性,达到免维护保养的效果,同时,中间轴的重量逐渐减轻,可以起到轻量化的作用。


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    Title :

    Maintenance-free intermediate supporting structure, intermediate transmission shaft assembly and vehicle


    Additional title:

    免维护中间支承结构、中间传动轴总成及车辆


    Contributors:
    ZHAO WEI (author) / XUE RUIFENG (author) / REN HAOJIE (author)

    Publication date :

    2025-03-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16C SHAFTS , Wellen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16H Getriebe , GEARING



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