POWERED SHIELD COMPLEX FOR CONSTRUCTION OF TUNNELS WITH PREFABRICATED EMBEDDED IN ROCK LINING Russian patent published in 1994 - IPC

FIELD: construction of tunnels and subways. SUBSTANCE: complex has powered shield with slotted cutting member of rotary type installed on main shaft of drive with hydraulic motors, each of which is connected through gear train with main shaft. Hydraulic system of each hydraulic motor is made in form of one removable mounting block with its components interconnected by permanent pipelines and installed on movable carriage of cutting tool drive. Roller conveyer of lining placer has cantilever rollers staggered opposite for resting on inner surface of lining block for, at least, three pairs of rollers. Lower ends of arc of placer roller conveyer have folding stops. Powered shield complex has conveyer block placed and transport bridge with front and rear supports. Rear support of transport bridge is made for its displacement relative to axis of powered shield in horizontal plane by means of screw device kinematically connecting transport bridge with upper part of rear support. EFFECT: higher efficiency. 7 dwg