Steel structure roof slope variable-angle connecting device

The utility model provides a steel structure roof slope variable-angle connecting device, which relates to the technical field of variable-angle connecting devices and comprises a beam body, connecting pieces are fixedly mounted on the top surface and the bottom surface of the beam body, mounting plates are fixedly mounted on the surfaces of the connecting pieces, purlins are arranged on the surfaces of the mounting plates, connecting rods are mounted on the rear surfaces of the purlins, and the connecting rods are connected with the beam body. A limiting block is arranged at one end of the connecting rod, a threaded rod is installed on the surface of the limiting block, a square groove is formed in the position, located at the connecting rod, of the surface of the mounting plate, a bolt is rotationally connected between the mounting plate and the purline, and the bolt penetrates through the interior of the through hole. By arranging the beam body, the connecting piece, the mounting plate, the purline, the co