Main body frame for compressing cylindrical silage

The utility model relates to a main body frame for compressing cylindrical silage, and belongs to the technical field of agricultural machinery. According to the technical scheme, levers of two one-row cover hydraulic cylinders (7) are connected with two arc-shaped one-row covers (1) respectively, the two arc-shaped one-row covers (1) are symmetrically hinged to the left side and the right side of the upper end face of a bottom forming frame (1) respectively, and the two one-row cover hydraulic cylinders (7) drive the corresponding arc-shaped one-row covers (1) to be opened and closed in an upper feeding bin supporting frame (7) respectively. The silage bale forming machine has the advantages that the bottom forming frame is matched with the two arc-shaped one-row covers, the two arc-shaped one-row covers are driven by the one-row cover hydraulic cylinder to be closed in place to finally form a cylindrical compression space cavity, and after silage is compressed and formed, the two-row cover hydraulic cylinde