| 摘要 |
The invention relates to a crawler track mechanismmounted self-propelled, continuously operating open-cast mining machine with a drum-shaped mining device having cutting tools aranged around the periphery of the drum. The cutting drum (1) fitted with cutting teeth (4) can carry out cutting in both directions. The mined material is directed into the interior of the cutting drum (1). Cutter bars (2) are arranged in a substantially axial configuration around the circumference of the drum and the teeth holders (3) mounted on the cutter bars (2) carry teeth (4a, 4b). The teeth holders (3) with the teeth (4a, 4b) are tiltable about an axis (8) in such a manner that the teeth angled upwards in the direction of rotation automatically pivot into the cutting position as they engage in the material to be extracted, and the teeth (4b) pointing in the opposite direction are simultaneously swung out of the clearance angle zone (6) of the teeth (4a) doing the cutting. The material mined is transported by the cutter bars (2) and the flights (33) over a curved liner (9) and a feed chute (10) onto a discharge belt (11) axially arranged within the cutting drum. This belt transports the mined material to the end of the cuting drum and discharges it onto further conveyors (12, 13, 14) located outside the cutting drum (1). The mining machine is equipped with two sets of crawler track mechanism units (21, 22) which can be raised and lowered independently of each other by means of lift cylinders (24) and parallelogram links (23). Sensors (39, 40, 41, 42) are provided to divide up the loads via a programmable controller (43) between the individual crawler track mechanism units (21, 22) and to ensure that the attitude of the equipment chassis (19) is maintained during the various operating phases of the mining machine.
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