首页>
外国专利>
Sposób ustawiania automatycznego sterowania poziomem struga przy wybieraniu strugowym w górnictwie węgla kamiennego
Sposób ustawiania automatycznego sterowania poziomem struga przy wybieraniu strugowym w górnictwie węgla kamiennego
展开▼
机译：在硬煤开采行业中设定犁头自动控制犁头高度的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method of setting an automatic level control of a plow in longwall mining operations. By means of a boom control mechanism, a control angle for setting motion of the plow, which is guided on a face conveyor, in an exploitation direction as a climbing, plunging or neutral motion is set. For each plow stroke, a cutting depth and the control angle, derived as a differential angle between inclinations of the face conveyor and of a top canopy of a shield support frame are determined. In a calculating unit, a face height change per plow stroke is calculated therefrom and a face height, as a projected height, is associated with each face position of the face conveyor. When a shield support frame that trails behind the plow in terms of a time delay reaches a respective face position, an actual height of the face is calculated and compared with the store projected height. For subsequent plow strokes, a height differential value between the projected and actual heights, determined for a respective face position, in the sense of a self-learning effect of the calculating unit when the control angle that is to be set to achieve a projected height of the face is prescribed, is taken into consideration.
展开▼
