System for feeding and discharging grains in granary of bulk building

The invention discloses a system for grain feeding and discharging in a granary of a bulk building warehouse. The system comprises a plurality of common articulated chutes for grain feeding and/or grain discharging of the building warehouse and a plurality of loading devices for loading bulk grains, the common articulated chute is communicated with a plurality of grain feeding devices and a plurality of grain discharging devices, the grain feeding devices are correspondingly arranged at the upper parts of the warehouses of the building warehouses of all the floors, the grain discharging devices are correspondingly arranged at the bottoms of the upstairs warehouses of the building warehouses of all the floors, the plurality of grain feeding devices are arranged in the warehouses of all the building warehouses, and the plurality of grain discharging devices are arranged in the upstairs warehouses of all the building warehouses; the truck loading device comprises a grain outlet conveying mechanism arranged on th