Special-shaped urea tank fixing device

The utility model relates to the technical field of urea tanks, in particular to a special-shaped urea tank fixing device which comprises a bottom plate, a bracket assembly, a strap assembly and a urea pump support. The bracket assembly comprises two brackets which are arranged in parallel; the bottom plate is fixedly connected to the bracket assembly; a reinforcing rib I and a reinforcing rib II which are perpendicular to each other are arranged on the bottom plate; the bottom plate is further provided with a reinforcing rib III, and the included angle between the reinforcing rib III and the reinforcing rib I is 45 degrees. The three groups of strap assemblies are respectively connected with the reinforcing rib I, the reinforcing rib II and the reinforcing rib III; each strap assembly comprises a strap I and a strap II, and the strap I and the strap II are connected through an adjusting assembly. An arc-shaped frame structure matched with the outer surface of the special-shaped urea tank is defined by the st