Patent ID: 8602710

Claim:
A silage bag unloading apparatus comprising: a movable chassis; a bag cutting device configured to cut the silage bag into two slices, said bag cutting device comprising a front cutter and a back cutter, wherein the front cutter is configured to cut the silage bag before the back cutter cuts the silage bag, and the back cutter is placed vertically above the front cutter so that the silage bag after being cut by the front cutter is vertically or obliquely elevated when the silage bag is cut by the back cutter; a lifting tube; a sweeping auger mechanism comprising at least an axial auger and two side augers, said sweeping auger mechanism being configured to enter into the silage bag to sweep grains in the silage bag and bring the grains towards an inlet of the lifting tube for unloading the grains; and at least two spools to roll up the silage bag, wherein each spool has a rotary rolling up shaft capable of being coupled to a rotary motor, and wherein said at least two spools are arranged one at each side of the chassis of the apparatus and each one of said shafts is removably mounted between a couple of end support plates so as to roll up each of the two slices of the silage bag.