Sliding type fixed-point cargo unloading mechanism and automatic cargo unloading equipment

The utility model discloses a sliding type fixed-point cargo unloading mechanism and automatic cargo unloading equipment, and the sliding type fixed-point cargo unloading mechanism comprises a horizontal fixing frame, a cargo unloading assembly, a sliding driving assembly and a horizontal driving shaft, the goods unloading assembly comprises a sliding sleeve connected to the horizontal fixing frame in a sliding mode and at least one set of front arm plates, the front arm plates are installed on a horizontal driving shaft through bearings, and a driving chain wheel is installed on the horizontal driving shaft. An upper rolling shaft is installed between the far ends of the two front arm plates, an upper unloading roller is fixed to the upper rolling shaft, a driven chain wheel in transmission connection with the driving chain wheel is arranged on the upper rolling shaft, and friction protrusions are arranged on the surface of the upper unloading roller. The horizontal driving shaft rotates under the driving ac