GATHERING ARMS LOADER MACHINE IN UNDERGROUND MINES GATHERING ARMS LOADER MACHINE A chain conveyor extending from the gathering head up to the boom end is the transporting medium, conveying coal gathered from the face to receiving mine car, tub, conveyor or shuttle car. The gathering arms are operated by twin crank discs. These discs are flushed of with the working surface of the head. There is a separate drilling motor for each of the arms. The rate of loading varies with models, and commonly used models are for 1te/min to 4te/min capacities. The rate of loading depends upon the number of strokes/min and the conveyor speed is also related to the rate of loading of gathering arms. Three variable speeds are available on the loader for gathering speed of the arms. The ramp of gathering head can be raised or lowered usually through 0.5m. During flitting the head is kept elevated and during normal loading operation the head rests on the floor. Hydraulic jacks ...
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