| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique improving leveling performance by reducing non-leveling intervals.SOLUTION: The leveling device is so disposed that the center thereof is disposed in the front and, inclined rearward respectively toward both sides from the center. The leveling device includes drive shafts provided along the inclination. Driving force to the leveling device is transmitted to the drive shafts from an input shaft via an idler shaft in a leveling transmission case provided at the center. Gears for transmitting the power from the input shaft to the idler shaft are geared with each other at a backward side of an intersection point of the drive shafts extendingly provided in both sides and a central axis. |
