Integral frame and fire truck

The utility model discloses an integral frame and a fire fighting truck. The integral frame comprises a front cross beam assembly, a left longitudinal beam assembly, a right longitudinal beam assembly, an auxiliary frame assembly and a rear supporting leg box assembly, the left longitudinal beam assembly and the right longitudinal beam assembly adopt edge beam structures and are arranged at the front end of the auxiliary frame assembly; the rear supporting leg box assembly adopts a box body type structure and is arranged at the rear end of the auxiliary frame assembly; the left longitudinal beam assembly, the right longitudinal beam assembly, the rear supporting leg box assembly and the auxiliary frame assembly are welded into an integrated structure, and the front cross beam assembly is connected with the left longitudinal beam assembly and the right longitudinal beam assembly. A hydraulic oil tank and a front supporting leg box are arranged in the auxiliary frame assembly. The front ends of the edge beams a