Supporting bracket for triangular area of retracement working face

The invention discloses a supporting bracket for a triangular area of a retracement working face, and relates to the field of coal mining supporting devices.The supporting bracket comprises a first supporting frame, a second supporting frame and a transverse driving cylinder, the first supporting frame comprises a first bottom plate, a first top plate and a first driving cylinder, and the first top plate is arranged above the first bottom plate; a shell of the first driving cylinder is hinged to the first bottom plate. A piston rod of the first driving cylinder is hinged to the first top plate. The second supporting frame comprises a second bottom plate, a second top plate and a second driving cylinder, the second bottom plate is arranged on the side wall of the first bottom plate, the second top plate is arranged above the second bottom plate, a shell of the second driving cylinder is hinged to the second bottom plate, and a piston rod of the second driving cylinder is hinged to the second top plate; the tra