AUGER HAVING MULTIPLE OIL REDUCTION GEAR RATIOS, CAPABLE OF SIMULTANEOUSLY BORING A LARGE HOLE AND A SMALL HOLE WITH ONE AUGER

摘要

PURPOSE: An auger having multiple oil reduction gear ratios is provided to implement a reduction gear ratio in two kinds by additionally installing a first rotary shaft, an input gear unit, and a first deceleration unit.;CONSTITUTION: An auger having multiple oil reduction gear ratios comprises an auger driving unit (A) and a lower boring device unit. The auger driving unit comprises a hydraulic motor (1), a deceleration device unit (3), and an auger base frame. The hydraulic motor comprises a hydraulic unit (11) and a hydraulic motor rotary shaft (12). The deceleration device unit includes a first deceleration unit (23), a second deceleration unit (24), a rotary shaft unit (21), a coupling gear (22), a deceleration opening device (25), and an upper casing (26). The first deceleration unit decelerates the number of rotation of the hydraulic motor when low speed rotation is needed and does not decelerate the number of the rotation when high speed rotation is needed. The rotary shaft unit comprises a first rotary shaft, an input gear unit, and a second rotary shaft.;COPYRIGHT KIPO 2013