Stacking gripper mechanism of stacker crane

The stacking gripper mechanism comprises supporting frames which are horizontally and transversely symmetrically arranged and a transverse frame arranged at the top ends of the supporting frames, a lifting structure used for adjusting the vertical plane position of the transverse frame is arranged at the top ends of the supporting frames, the lifting structure comprises a T-shaped supporting column, a threaded hole is formed in the top end of the T-shaped supporting column, and the transverse frame is connected with the T-shaped supporting column. A threaded hole is formed in the T-shaped supporting column, a threaded rod is connected to the inner wall of the threaded hole in a threaded and penetrating mode, a rotating piece used for controlling the threaded rod to rotate is arranged at the top end of the threaded rod, and guiding pieces are arranged on the two sides of the bottom end of the transverse frame. And meanwhile, the guide piece is arranged at the bottom end of the transverse frame to fix the posit