| abstract |
Disclosed is a cutting unit for a hard rock tunnel boring machine comprising a cutting reduction gear (1), a cutting arm (2) and a cutting head (3), wherein the cutting arm (2) with the cutting reduction gear (1) is fixedly connected by bolts, and a main shaft of Cutting arm (2) is connected to an output shaft of the cutting reduction gear via a spline, the cutting head (3) comprises a main shaft of the cutting head (3-1), a planetary gear set (3-2), an internal gear ring (3-3), a bearing block ( 3-4), a seal bushing (3-6), a housing of the cutting head (3-7), cutting discs (3-8), cutting bits (3-9), a cutting planetary gear carrier (3-10) and a bevel gear assembly (3-3). 11). The cutting unit for a hard rock tunnel boring machine has the advantage of high cutting performance, wide hardness range of cuttable rock formation, high reliability, compact design and small size, substantial improvement in tunnel boring efficiency of the hard rock tunnel boring machine, significant reduction in labor intensity of the staff and achievement of safer and high efficient production in coal mining. |