COMPLEX TO DRIVE SHORT ROADWAYS WITH TUBBING Russian patent published in 2013 - IPC E21D9/11 

FIELD: mining.

SUBSTANCE: complex to drive short roadways with tubbing in semi-stable rocks comprises a working element in the form of a detachable faceplate with cutters along its entire surface made with windows for preliminary weakening of a bottomhole equipped with sliding stops that retain it with hydraulic cylinders and fixed on a rotary lever installed on a bearing frame of a tubbing erector, besides, one of the ends of the rotary lever there is a grip for tubbing, made as capable of replacement with a rock-breaking tool, and also a mechanism for movement of the tubbing erector. The faceplate is equipped with a feed mechanism made in the form of two hydraulic cylinders connected with a carriage of a hydraulic drive of rotation of the rotary lever, four sliding stops that retain it and are installed in hydraulic cylinders, and four windows-segments in the middle part, closed by sliding covers. At the same time fixation of the faceplate with the rotary lever is made in the form of a quick-detachable joint of dovetail type, in which ledges on the rotary lever that are rigidly connected with it are entered into slots arranged on the inner side of the faceplate. The rotary lever is made as telescopic, and on the frame of the tubbing erector there are telescopic booms with fixed sliding canopies on them with the possibility of their reciprocal movement. At the bottomhole side the faceplate may be additionally equipped with radial slots, which are arranged along its circumference, in which plate cutters are rigidly fixed. The complex may be additionally equipped with four buckets, a guiding chute connected with a receiving tray and a belt conveyor, installed on the frame of the tubbing erector, at the same time buckets are installed diametrically along the circumference of the faceplate, and their rear wall is made in the form of a deflecting sheet, with a hole in its upper part, matched with the guiding chute. The faceplate may be fixed on the rotary lever with eccentricity relative to its axis of rotation.

EFFECT: increased speed of roadway driving, higher safety of works, reduced time expenditures for preliminary fixing, more accurate profiling of a roadway.

13 dwg