COMPLEX FOR TUNNELLING OF SUBWAY MINE OF ROUND CROSS SECTION Russian patent published in 2013 - IPC E21D9/00 

FIELD: mining.

SUBSTANCE: complex for tunnelling of a subway mine of round cross section comprises mechanisms of rock breaking arranged on a carcass equipped with a movement drive, a transshipment device for loading of rock mass into transport facilities. The transshipment device is made in the form of a chute of cylindrical shape fixed on the frame and normally oriented towards the bottomhole, the lower edge of the chute is located at the sharp angle a to the mine base and with limitation of the upper edges of the chute with the horizontal plane arranged at the level of the central axis of the mine or with certain downward displacement. Inside the chute in its middle part there is an infinitely closed double-chain scraper contour on driving and tension sprockets with a curvilinear external profile of scrapers, and with the possibility of interaction of scrapers in the lower weight-bearing branch with the chute base, and the upper idle branch - with resting against the rollers.

EFFECT: improved reliability of complex operation, elimination of rock mass accumulation near a bottomhole as a result of mine tunnelling, reduced labour intensiveness of complex maintenance and its increased efficiency due to elimination of complex idle time.

3 dwg