Light-weight fender support assembly and preparation method of fender supporting rod thereof

The invention discloses a light-weight fender support assembly and a preparation method of the fender supporting rod thereof. Through the fender support assembly, a fender is installed on a vehicle frame and comprises a fixed support and the fender supporting rod, the fender supporting rod is installed on the back face of the fender; one end of the fender supporting rod is installed in the fixed support and connected with the vehicle frame through the fixed support, and the sectional area, perpendicular to the length direction, of the fender supporting rod is decreased from the end, connected with the fixed support, of the fender supporting rod to the other end of the fender supporting rod. According to the light-weight fender support assembly, the fender supporting rod with the variable cross section is adopted, the thickness and the structural size are reasonably designed according to the stress levels of different parts, light weight is achieved to the maximum extent, the weight of the fender supporting ro