| 摘要 |
<p>Provided is a tunnel excavator which can continuously be used for a long time because the structure thereof is simple, significant noise is not generated, and the efficiency of power transmission and durability is excellent. The tunnel excavator comprises: a pipe body (10) moving forwards by a propulsion jack (2); a wing part (20) installed in the front end of the pipe body to be freely curved; a reduction motor (30) which includes a motor part (40) fixated to the wing part (20), and a reduction part wherein the reduction part (50) is a cycloid reducer; and a cutter part (70) installed in the front end of the reduction motor (30) and rotates at a reduced speed.</p> |
