Novel cross beam connecting code piece

The utility model discloses a novel cross beam connecting piece, which comprises a middle upright post, a left insertion core, a right insertion core, an opening side middle cross beam and a non-opening side middle cross beam, the left insertion core comprises a left concave plate, screw grooves are respectively convexly arranged on the inner walls of an upper top plate and a lower bottom plate of the left concave plate, the left insertion core is attached to a left side plate of the middle upright post, and the right insertion core comprises a right concave plate. Screw grooves are arranged on the inner walls of an upper top plate and a lower bottom plate of the right concave plate in a protruding mode respectively, a cutting portion is arranged below the upper end of a side vertical plate at the front end of the right inserting core, a notch is formed in the front end of a right side plate of the middle stand column, the right inserting core is attached to the right side plate of the middle stand column, an