Compression type dustbin tail door locking device

The utility model discloses a compression type dustbin tail door locking device which comprises a lock hook hinged to the outer side of a dustbin body and a locking base installed on the side face of a tail door side column, a hinge base on the top of a tail frame is hinged to a turnover base on the top of a tail door through a hinge shaft, and the hinge base is provided with a first long hole for a first fastening bolt to penetrate through. One end, far away from the tail door, of the hinge seat is provided with a positioning part which is bent downwards; the positioning part is provided with a first adjusting bolt which is propped against the tail frame; the locking seat comprises a locking seat plate fixed to the side face of the side column, a connecting plate connected to the plate face of the locking seat plate through a second fastening bolt, a locking shaft perpendicular to the connecting plate, a limiting block and a second adjusting bolt, the limiting block and the second adjusting bolt are arranged