Automatic hoisting system for shield tunneling machine duct pieces and construction method

The invention discloses an automatic hoisting system for a shield tunneling machine duct piece and a construction method, belongs to the technical field of tunnel engineering construction equipment, and solves the problems of potential safety hazards and high equipment failure rate due to the fact that the duct piece shakes and shakes in the hoisting process in a traditional duct piece grabbing mode. Comprising a vacuum grabbing device, a walking system, a lifting system and a PLC control system, and the vacuum grabbing device is used for sucking tunnel segments; the lifting system is connected with the vacuum grabbing device and used for driving the vacuum grabbing device to move in the vertical direction. The walking system is connected with the lifting system and used for driving the vacuum grabbing device to move in the horizontal direction. The PLC control system is electrically connected with the vacuum grabbing device, the walking system and the lifting system. And the automation degree and the integra