Face equipment comprising hose levels placed on the shield support frames of said face equipment

摘要

A face equipment for mechanical extraction in longwall mining, in particular in the underground hard coal mining industry, includes a face conveyor (21) arranged along the coal face, an extraction mechanism (22) that can be moved along the face conveyor (21), and shield support frames (10) fastened at an angle to the face conveyor (21). In order determine the shield height of the extended shield support frame (10) corresponding to the face opening height, a flexible hose level (17) with a liquid-filled hose (18) is installed between the roof canopy (13) and floor skid (11) of individual shield support frames (10), and a pressure sensor (19) is arranged on the skid-side end of the hose (18). An inclination measuring device (25) is arranged on the roof canopy (13), and the pressure sensor (19) and inclination measuring device (25) are connected to an analyzing and control unit.

主权项

1. A face equipment for mechanical extraction in longwall mining, comprising:
a face conveyor (21) arranged along a coal face; an extraction mechanism (22) that can be moved along the face conveyor (21); shield support frames (10) fastened at an angle to the face conveyor (21); a flexible hose level (17) with a liquid-filled hose (18), wherein, in order to determine shield heights of extended shield support frames (10) corresponding to a face opening height, the flexible hose level (17) with a liquid-filled hose (18) is installed between a roof canopy (13) and a floor skid (11) of individual shield support frames (10); a pressure sensor (19) arranged on a skid-side end of the hose (18); an inclination measuring device (25) arranged on the roof canopy, wherein, in addition to considering a longitudinal and/or transverse inclination of the shield support frames (10) during height determination, the inclination measuring device (25) permits measurement of at least two tilting axes towards the horizontal; and an analyzing and control unit, wherein the pressure sensor (19) and inclination measuring device (25) are connected to the analyzing and control unit.