Coal mining method of lengthened front-beam fully-mechanized mining and fully-mechanized top coal carving of three-soft coal seam and equipment

Coal mining method of lengthened front-beam fully-mechanized mining and fully-mechanized top coal carving of three-soft coal seam and equipment

CN
  • CN 101,666,230 B
  • Filed: 10/09/2009
  • Issued: 05/25/2011
  • Est. Priority Date: 10/09/2009
  • Status: Active Grant
First Claim
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1. Three-soft seam lengthening front-axle beam combine adopt, the mining coal-mining method, it is characterized in that:

  • the lengthening front-axle beam is installed at the front end of the cantilever extension of comprehensive mining hydraulic bracket, the hydraulic jack of cantilever extension stretches out after the coal-winning machine coal cutting, the part of lengthening front-axle beam front end is stretched in the rib, allow the lengthening front-axle beam support top board or top coal, behind coal-winning machine, progressively drag conveyor is moved by rib then, moving hydraulic support forward again, this moment, the hydraulic jack of cantilever extension was in retracted mode again;

    Carry out rear caving coal in the place that moves past hydraulic support.

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