Urea tank mounting structure and engineering machinery

The utility model discloses a urea tank installation structure and engineering machinery, the urea tank installation structure comprises a support, a cross beam and an installation plate, a hinge and a first door lock structure are added on a channel plate, the traditional installation mode that a urea tank is usually installed in a rotary table tool box is changed, and the urea tank can be installed at other parts of a rotary table hood. The internal space utilization rate of the hood is improved. By means of the urea tank installation structure, the urea tank does not need to be assembled in the rotary table tool box, the installation position of the urea tank can be increased, it is guaranteed that the rotary table tool box has enough space for storing related tools, the urea tank can be close to a postprocessor, the length of a urea pipe is shortened, and the reliability of a urea pipe system is high. According to the engineering machinery adopting the urea tank mounting structure, the urea tank is fast a