The invention discloses a multifunctional vehicle rear lower protection device which comprises a protection beam assembly, a frame longitudinal beam, a limiting assembly, a hinge assembly and an energy absorption assembly. The protective beam assembly comprises a protective cross beam and a connecting beam, and a plurality of positioning holes are formed in the connecting beam; the frame longitudinal beam is hinged to the outer side of the upper end of the connecting beam, so that the protective beam assembly swings. The limiting assembly comprises a limiting pin shaft, and one end of the limiting pin shaft penetrates through the outer side of the connecting beam through telescopic action to limit and block the connecting beam or insert the connecting beam into a positioning hole for positioning; one end of the crumple beam is fixedly connected with the frame longitudinal beam, and the other end of the crumple beam abuts against the rear end of the connecting beam. According to the protection device, the protection beam assembly is arranged to be hinged to the frame longitudinal beam, the height of the protection beam can be adjusted through the limiting assembly, the risk of rigid impact with the ground is avoided, meanwhile, a rear vehicle can be prevented from drilling the bottom, impact kinetic energy is transmitted to the crumple beam for crumple deformation energy absorption, rigid impact is avoided, and the service life of the vehicle is prolonged. The existing problem that a protection device is single in function is solved.

    本发明公开了一种多功能车辆后下防护装置,包括防护梁组件、车架纵梁、限位组件、铰接组件及吸能组件。防护梁组件包括防护横梁和连接梁,连接梁上设有多个定位孔;车架纵梁与连接梁上端外侧铰接,使防护梁组件进行摆动。限位组件包括限位销轴,其一端通过伸缩动作穿过连接梁外侧,对连接梁进行限位阻挡或插入定位孔进行定位;吸能组件包括溃缩梁,其一端与车架纵梁固定连接,一端与连接梁后端抵触。本发明的防护装置,通过设有防护梁组件与车架纵梁铰接,可通过限位组件调整防护横梁高度,避免了与地面产生刚性冲击风险,同时可防止后车钻底,并将冲击动能传递至溃缩梁进行溃缩变形吸能,避免刚性撞击,解决了防护装置功能单一的现有问题。


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    Title :

    Multifunctional vehicle rear underrun protection device


    Additional title:

    一种多功能车辆后下防护装置


    Contributors:
    HAO XUEZHI (author) / GUO DONGQING (author) / ZHOU XUAN (author) / LYU CHAO (author) / ZENG XINRUI (author)

    Publication date :

    2024-03-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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