Dual-power engineering machinery air conditioning system and engineering machinery

The utility model relates to an air-conditioning system, aims to solve the problem that an air-conditioning system compressor on the existing dual-power engineering machinery is inconvenient to be in transmission connection with a power system through a belt, and provides a dual-power engineering machinery air-conditioning system and engineering machinery. The first hydraulic pump and the second hydraulic pump are respectively driven by an engine and a motor, the cooling fan is driven by a hydraulic motor, the control valve is used for controlling the hydraulic motor, two oil inlet ends of the switching valve are respectively connected with pump ports of the first hydraulic pump and the second hydraulic pump, and an oil outlet end of the switching valve is connected with the control valve. A driving belt wheel is arranged on an output shaft of the hydraulic motor and connected with a compressor in the refrigerating circuit through a belt. In the utility model, the hydraulic motor in the compressor radiating s