ERECTOR DEVICE AND TUNNEL BORING MACHINE

摘要

PROBLEM TO BE SOLVED: To improve tunnel workability by enabling the assembly works of a timbering at a position near to a face while enhancing the workability of tunnel construction works by facilitating the assembly works of the timbering in an erector device. SOLUTION: A supporting frame 19 is connected at the rear section of the drum 11 of the TBM 10, a rotary ring 34 is supported rotatably to the supporting frame 19 by a revolving roller 33, the first timbering supporting mechanism capable of holding a timbering T and the two second timbering supporting mechanisms are installed to the rotary ring 34, and timbering gripping sections for the second timbering supporting mechanisms can be moved minutely in the circumferential direction.