Internal mold lining trolley for closed conduit

The utility model discloses a closed conduit internal mold lining trolley. The closed conduit internal mold lining trolley comprises a frame, a template assembly, a walking mechanism, a lifting mechanism and a template overturning assembly, the formwork assembly comprises an arc-shaped top formwork and side formworks arranged on the two sides, and the two side formworks are hinged to the two endsof the top formwork. The side formwork comprises a side formwork vertical section and a side formwork arc section, the upper end of the side formwork vertical section is connected with the lower end of the side formwork arc section, and the upper end of the side formwork arc section is hinged to the top formwork; the frame is arranged on the inner side of the formwork assembly and used for supporting the formwork assembly. The formwork overturning assembly is arranged between the frame and the side formwork and used for driving the side formwork to rotate around the hinge point of the side formwork and the top formwor