MINING MACHINE

摘要

Mining equipment for steering the cutting horizon (10) of a mining machine cutter (2) which is mounted on a ranging arm (3) and which makes repeated cutting traverses, comprises a boom (30) pivotally mounted on a support housing (31) fixedly secured to the ranging arm (3). Means are provided for urging the boom towards a rock or mineral boundary (10) to sense the cutting horizon made by the cutter on a previous traverse and sensor means sense the pivotal position of the boom with respect to the ranging arm. Control means control the current cutting horizon made by the cutter in accordance with the sensed position of the boom.