The invention provides a no-rocker roller vertical-lifting-type comprehensive
coal cutter. The no-rocker roller vertical-lifting-type comprehensive
coal cutter is suitable for mining of a hard medium thick long wall
coal seam with coal seam dip less than 30 degrees and medium thick coal quality and comprises a central control box, a left
cutting lifting reduction gearbox, a right
cutting lifting reduction gearbox, a left side guiding rail fixed box, a right side guiding rail fixed box, a left traction reduction gearbox, a right traction reduction gearbox, a left walking gear box and a right walking gear box. The left
cutting lifting reduction gearbox and the right cutting lifting reduction gearbox are provided with sideways which are matched with lifting guiding rails of the left side guiding rail fixed box and the right side guiding rail fixed box. The left cutting lifting reduction gearbox and the right cutting lifting reduction gearbox are driven to do lifting movement by using lifting oil cylinders, and meanwhile, cutting motors of the left cutting lifting reduction gearbox and the right cutting lifting reduction gearbox drive a spiral roller to rotate through a cutting gear reduction mechanism. The left traction reduction gearbox and the right traction reduction gearbox drive the left walking gear box and the right walking gear box, and then left and right traction movement of the whole
machine is driven. According to the no-rocker roller vertical-lifting-type comprehensive coal cutter, a cutting gear reduction mechanism adopts two-level
gear transmission and two-level planetary
gear transmission, a plurality of sets of idle wheel sets do not existed, and a transmission chain is simple; and by using matching of the lifting guiding rails and the sideways, the whole
machine is compact in structure, and the reliability and stability of operation are improved.