Foundation pit compaction filling structure

The utility model discloses a foundation pit compaction filling structure which comprises a baffle, a concave cavity is formed in the back wall of the baffle, a screw rod is installed in the concave cavity, a thread sleeve is arranged on the screw rod in a sleeved mode, a lifting plate is arranged on the outer side of the thread sleeve, a rotary knob is fixed to the top end of the screw rod, and two sets of guide rods are symmetrically installed on the two sides of the lifting plate. Four sets of barbs are fixed to the lower end of the lifting plate, and fixing holes are formed in the positions, corresponding to the barbs, of the bottom end of the baffle. The device has the advantages that the screw, the thread sleeve, the lifting plate and the guide rod are arranged, the barbs are fixed to the lifting plate, when the bottom end of the baffle is fixed, the screw is rotated to enable the thread sleeve to drive the lifting plate to move under the action of threads, in the moving process, the guide rod guides th