The invention discloses a quick mounting and demounting device for a
drill stem of a raise boring
machine. The quick mounting and demounting device consists of a
drill stem holder which comprises an adjustable support, an automatic feeding device and a movable
retainer device. The adjustable support comprises a support (1), a connection beam (2), a support crossbeam (5), a fixed
retainer (6), a retaining rod support plate (7), a connection plate (10) and a screw mechanism. The automatic feeding device consists of a link mechanism and a
cam mechanism, and the movable
retainer device comprises a movable retainer (18) and a fixed plate (19). Compared with the prior art, the quick mounting and demounting device for the
drill stem is compact in structure and simple in operation, automatic mounting and demounting of large-sized drill stems is realized, labor intensity is effectively relieved for workers, the large-sized drill stems can be quickly put into a
manipulator for one time and quickly recovered, and accordingly operation efficiency is remarkably improved. In addition, the whole quick mounting and demounting device is convenient to
mount, demount and transport, and the
automation level in mounting and demounting of the drill stem of the raise boring
machine is evidently increased.