Rocker-arm-type segment erector

The invention belongs to the technical field of shield machinery, and particularly relates to a rocker-arm-type segment erector which is mainly used for solving the technical problems that a traditional erector is low in erecting efficiency and low in precision and cannot meet small space construction. The rocker-arm-type segment erector comprises a circular-ring-shaped fixing frame, and the fixing frame is mainly composed of a rotary supporting ring, a base board and a motor installation seat which are arranged on the fixing frame; the motor installation seat is provided with a rotating motor, the inner side of the rotary supporting ring is provided with a rotary frame body which is matched with the rotary supporting ring and connected with a thread installation hole in the rotary supporting ring through a bolt, the bottom of the rotary supporting ring is provided with a connecting rod seat, the connecting rod seat is provided with a rotary rocker arm and a telescopic oil cylinder, and the front end of the rotary rocker arm and the front end of the telescopic oil cylinder are provided with a segment gripping and lifting device. The rocker-arm-type segment erector is reasonable in structural design and effectively improves the erecting precision and quality of a pipeline.