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trepanner

A cutter loader for continuous mining in longwall faces. Its main cutting unit is the trepanner wheel with cutting arms, one at each end of the machine to enable it to cut in both directions on the face. Also fitted are a vertical, back-shearing jib; a floor-cutting jib, duplicated to enable cutting in either direction; and, if necessary, a roof-cutting disk. The machine is used in conjunction with an armored flexible conveyor on a prop-free front face; suitable for seams between 3 ft and 4 ft (0.9 m and 1.2 m) thick, although it can work in thicker seams if the top coal falls freely.

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Creator

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 points
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