Extraction controller for coal mining

Abstract

The invention relates to an extraction controller for coal mining comprising a central control unit above ground and a longwall face control unit at the end of the face for controlling the extraction functions of the extraction units, i.e. robbing, advancing and jigging. The longwall face control unit is equipped with a display, which is controlled by a program that is stored on a hard drive. The face control unit comprises additional read-only memory modules as program memories for storing the required function programs.

1 . An extraction control unit for coal mining in the longwall face of a mine configured to control a plurality of extraction units that are erected adjacent one another along the length of the longwall face between galleries, and to control a mining machine that can travel along the coal face, comprising: 
 a central control unit located above ground;    a longwall face control unit located at the end of the longwall face and configured to control the mining functions of the mining machine and the extraction functions of the extraction units in the sense of robbing, advancing and jigging;    a plurality of shield control units, one of each being locally and functionally allocated to an extraction unit and configured to transform and transmit extraction commands of the longwall face control unit; and    a busbar connecting the longwall face control unit and the shield control units,    wherein the longwall face control unit has a display screen configured to display the commands and functions to be controlled or the positional and functional statuses of at least one of the extraction units of the mining machine, the extraction control unit, or other functional elements, wherein the program required for the display screen control is stored on a fixed disk of a fixed disk memory drive situated in the longwall control unit, and wherein the longwall control unit is equipped with fixed memory modules as program memory configured to store function programs and with a processor to process the programs and control the extraction and mining functions.    
     
     
         2 . An extraction control unit according to  claim 1 , wherein the busbar is configured to connect the longwall face control unit and the shield control units in series.  
     
     
         3 . An extraction control unit according to  claim 1 , wherein the fixed memory modules are read only memory modules.  
     
     
         4 . An extraction control unit according to  claim 3 , wherein the read only memory modules are selected from the group consisting of ROMs, EPROMs, EEPROMs, and flash EEPROMs.