Extraction frame for use in inclined stratification

摘要

The invention relates to an extraction frame (1) which is preferably intended for use in winning operations of semi-steep and steep stratification with a tilted steep working face (6). The extraction frame (1) has a rubble and stowage shield with shield elements (18, 19) which are connected in an intermediate joint (22) and are coupled on the stowage side to the footwall threshold (4) or to the roof bar of the hanging roof (5) and consist in each case of a rear wall (27) facing the stowage space and a side wall (28) located perpendicular thereto. The shield elements (18, 19) are approximately L-shaped in cross-section, their side walls (28) being located on the uphill side whilst on the downhill side lying opposite, hydraulically extendable gap covers or a hydraulically extendable support skid is provided. <IMAGE>