DEVICE FOR ERECTION OF SHOTCRETE SUPPORT Russian patent published in 1997 - IPC

FIELD: mining; applicable in underground mine workings for erection of light supports based on shotcrete. SUBSTANCE: the offered device includes manipulator 2 installed on platform 1. Extensible strip 5 is installed in upper part of manipulator 2. It consists of rods whose ends are interconnected to form rhombs in which each side of the following rhomb is extension of the of preceding one. Telescopic strips to which nozzles 7 with individual delivery of concrete-air mixture are attached, are installed on diagonal of each rhomb square to extension strip. Hinges of rods on the axis of extensible strip 5 are connected by means of movable bushings with bar installed on manipulator. Extensible strip is provided with hydraulic or mechanical servomechanism with remote control. EFFECT: higher efficiency. 5 dwg