Postprocessor mounting rack

A cantilever beam structure is fixed to a vehicle frame, a support structure is connected to the cantilever beam structure through a connector assembly, binding belts are hinged to the two end portions of the support structure, a fastening structure is arranged between the binding belts at the corresponding end portions, and the support structure is hinged to the connector assembly. The joint assembly is fixed on the cantilever beam structure through a fastener; an included angle alpha is formed between the support structure and the plumb line, so that the postprocessor installed on the support structure is obliquely arranged. The support structure is hinged to the binding belt and the cross beam through the pins or the pin shafts, stress concentration is not prone to occurring at the hinged position, the situation that the support is damaged or broken due to overlarge stress concentration is avoided, and the safety of the whole vehicle is guaranteed; and after the fastening structureof the bandage is loosene