DEVICE FOR PLACEMENT OF AIR-PLACED CONCRETE

摘要

FIELD: means of mechanization, applicable at facing and reinforcement of tunnel walls. SUBSTANCE: a feed pipe-line is placed on a platform mounted on drive wheels for turning around the longitudinal axis together with the nozzle and trimming shield. Mounted between the nozzle and pipe-line coupling is a telescopic proportional guide rod engageable with the shaped through slot of the proportional former shield. Signal transmitters installed on the platform are coupled to the automatic control unit. EFFECT: improved design.