The invention provides a lower protection device for a commercial vehicle, which is characterized in that a transverse member of the protection device is provided with a mounting hole from top to bottom, a mounting shaft is arranged in the mounting hole, and the mounting shaft is connected with a bracket or a frame; the protection device transverse component is in a reverse arc shape, namely, the arc shape of the protection device transverse component forms an arc face towards the front or the back of the automobile. The transverse member of the protection device is provided with the mounting hole and then connected with the support or the frame through the mounting shaft, and at the moment, the mounting hole and the mounting shaft form rotary connection, the rotating shaft serves as a fulcrum, and impact force borne by the left side or the right side of the transverse member can be transmitted to the whole transverse member to be borne through the lever principle. Meanwhile, the reverse arc-shaped structure of the transverse member balances the pulling/pressing stress of the front/rear wall of the transverse member through deformation energy absorption after being stressed, and the impact strength of the member is improved. CAE finite element analysis proves the rationality of the structure, and the weight of a product designed according to the national standard requirement is reduced by about 20% compared with that of a traditional product.
本发明提供了一种商用车下防护装置,在防护装置横向构件上自上向下设有安装孔,安装孔内设置有安装轴,安装轴再与支架或者车架连接;所述的防护装置横向构件成反向弧形,即防护装置横向构件的弧形朝向汽车的前或者后形成弧面。本发明中在防护装置横向构件上设有安装孔并通过安装轴再与支架或者车架连接,此时安装孔与安装轴形成的转动连接,以转轴为支点,可将横向构件左/右侧受到的撞击力,通过杠杆原理传递给整个横向构件承受。同时,横向构件的反弧形结构,受力后通过形变吸能平衡横向构件前/后壁的拉/压应力,提高构件的冲击强度。通过CAE有限元分析,证明此种结构的合理性,按国标要求设计的产品,比传统产品减重约20%。
Lower protection device for commercial vehicle
一种商用车下防护装置
2023-07-04
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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