DRIFT REINFORCING SUPPORT Russian patent published in 1994 - IPC

FIELD: mining industry. SUBSTANCE: support includes girders 1 hinged to each other and to hydraulic powered struts; rack 4. Girders 1 are made as a monorail along which geared wheel 5 is rolling. Geared wheel 5 is mounted on a trolley 6. The trolley includes drive 7, beam 8 on which left and right rockers are secured, respectively. Each rocker is provided with clamp 11 having hydraulic jacks 12. Two adjacent hydraulic powered struts 3 are provided with girder fixing assemblies 15 to fix girders 1 during advancement cycle. Fixing assembly 5 is made in the form of plungers extended by hydraulic jacks. EFFECT: enlarged operating capabilities. 7 dwg