CUTTER HEAD FOR LONGWALL SHEARER

摘要

A cutter head for a mining machine includes a first end and a second end with a drum axis extending between the first and the second ends. The cutter head also includes a web coupled to the second end of the drum. The web includes a plurality of arcuate apertures. Each arcuate aperture extends through an angle about the drum axis. The cutter head further includes a plurality of first ribs coupled to the web. Each of the first ribs is positioned between adjacent arcuate apertures. The cutter head also includes a plurality of second ribs coupled to the web. Each of the second ribs extend across one of the plurality of arcuate apertures. A first angle that extends between one of the first ribs and an adjacent one of the second ribs is different than a second angle extending between the one first rib and another adjacent second rib.

主权项

1. A cutter head for a mining machine, the cutter head comprising:
a drum including a first end, a second end, and an outer surface, the drum rotatable about a drum axis extending between the first end and the second end; a vane coupled to the outer cylindrical surface extending away from the drum axis; a cutting bit assembly positioned adjacent the vane, the cutting bit assembly including a bit and a holder block, the bit including a tip portion and a shank portion, the shank portion received within the holder block along a central axis, the holder block including a forward end adjacent the tip portion, a rear end opposite the forward end, and a transverse opening positioned between the forward end and the rear end, the transverse opening permitting access to a rear end of the shank portion, the holder block further including a rear opening; and a gusset coupled to the vane and spaced from the rear end of the holder block, wherein when the bit is broken, a portion of the bit is removable from the holder block through the rear opening and between the rear end of the holder block and the gusset.