Integrated sliding door upper rail box

The utility model relates to the technical field of track boxes. The utility model relates to a rail box, in particular to an integral sliding door upper rail box. Top plate arranged horizontally, line socket grooves are formed in two ends of the top plate; side plates are vertically arranged at two ends of the bottom surface of the top plate; reinforcing rib plates are arranged at two ends of thebottom surface of the top plate; the outer sides of the reinforcing rib plates cling to the top ends of the inner sides of the side plates; a mounting frame is horizontally arranged around the top plate; a mounting cavity is formed in the mounting frame; the top end of the top plate is positioned in the mounting chamber; the top end of the mounting frame is arranged on the periphery of the bottomend of the wall body, two guide grooves are formed in the bottom surface of the top plate, the two guide grooves are symmetrically formed relative to the center line of the top plate, guide wheels are tangentially arranged in