| 摘要 |
PURPOSE: A three-axle gearbox is provided to prevent noise caused by the uneven wear of a tooth surface and make the durability of a gear uniform over the whole of the teeth surface by preventing the uneven contact of the teeth surface by reducing the droop of shafts. CONSTITUTION: A three-axle gearbox is composed of an input shaft(S1) at which a plurality of shift gears are installed; a low-speed output shaft(S2) to which first and second-stage shift unit gears(GY1,GY2) and a reverse unit gear(GYR) engaged to the shift gear are installed to control the rotation, installed with parallel to the input shaft; and a high-speed output shaft(S3) to which third, fourth, fifth, and sixth-stage shift unit gears(GY3,GY4,GY5,GY6) engaged to the shift gear are installed to control the rotation, installed with parallel to the input shaft. A first-stage shift gear(GX1) is installed near a bearing(B) for supporting the input shaft. The first-stage shift unit gear engaged to the first-stage shift gear is disposed to the side of the bearing for supporting the low-speed output shaft. |
