Support-free PC assembly type L-shaped column connecting unit

The utility model provides a support-free PC assembly type L-shaped column connecting unit, relates to the technical field of buildings, and solves the technical problem that no L-shaped prefabricated concrete beam column is installed in the prior art. The device comprises an L-shaped column structure, and the cross section of the L-shaped column structure is in an L shape; the L-shaped column structure comprises an L-shaped column, a column head connecting piece, a top column head anti-shearing piece and a bottom column head anti-shearing piece, the column head connecting piece is fixedly connected with the bottom of the L-shaped column, the top column head anti-shearing piece is fixedly connected with the top of the L-shaped column, and the bottom column head anti-shearing piece is fixedly connected with the bottom of the L-shaped column; the column head connecting piece on one L-shaped column structure can be in threaded connection with the first threaded rod on the top of the other L-shaped column structu