The utility model relates to the technical field of operation machinery, and discloses a mounting device and operation machinery, the mounting device comprises a main body, the main body comprises a connecting part and a mounting part, the connecting part is fixedly connected with the mounting part, the connecting part is provided with a connecting structure matched with a vehicle body of a cleaning vehicle, and the mounting part is provided with a mounting structure for mounting a water spraying frame; according to the utility model, the main body and the supporting
assembly form the integral mounting device together, the main body is provided with a structure connected with the vehicle body and the water spraying frame at the same time, the water spraying frame can be directly mounted only by a single mounting device, the integral main body is better in integrity, and the water spraying frame is more convenient to
mount. The number of components is reduced, redundant reinforcing structures at the connecting positions of the components can be omitted, the strength of the main body is further improved through the supporting assemblies, and the water spraying frame can be reliably supported while the overall structure of the mounting device is simple.