Expressway construction roadbed pavement compacting device

The invention relates to the technical field of pavement compaction devices, and discloses an expressway construction roadbed pavement compaction device which comprises a box body; the box body is of a hollow cuboid structure formed in the lower surface, mounting blocks are symmetrically and fixedly connected to the right side of the box body, and insertion holes are formed in the opposite sides of the two mounting blocks; a holding rod is arranged between the two mounting blocks; when the device is used, the device is moved to a position needing to be compacted through the box body, a driving motor on a mounting frame is started to drive an L-shaped rotating rod to rotate, a roller slides in a lantern ring at the top of a pushing and pressing rod and is supported on the inner side of the lantern ring through a supporting rod, and a sliding block slides in an annular groove, so that after the L-shaped rotating rod rotates, and the pushing and pressing rod can be pushed to move up and down along a movable open