Vehicle chassis fuel tank with flame-retardant, explosion-suppression and protection functions

The utility model relates to the technical field of chassis fuel tanks, and discloses a vehicle chassis fuel tank with flame retardant, explosion suppression and protection functions, which comprises a fuel tank body, the front end of the fuel tank body is fixedly connected with a front protection function structure, and the bottom end of the fuel tank body is fixedly connected with a bottom protection function component. Lateral protection functional components are fixedly connected to the left side and the right side of the oil tank body correspondingly, an L-shaped mounting support is fixedly connected to the outer side of the oil tank body, a first plug pin is movably connected to the inner side of the L-shaped mounting support, the outer side of the first plug pin is sleeved with a first flat washer, and a first cotter pin is inserted into the inner side of the first plug pin. The inner side of the L-shaped mounting support is connected with a strap in a clamped mode through a first plug pin, and the out