| 摘要 |
PURPOSE:To eliminate troubles accompanying differential lock and its release operation and realize smooth turning by enabling a differential lock mechanism to be automatically and reversibly changed over to a differential lock operational condition in linkage to change-over of a traveling speed change gear to a low speed stage. CONSTITUTION:Structure of a traveling driving system for a rice-planting machine is such that an output from an engine 1 is transmitted to front wheels 4, 4 through a traveling speed change gear C and a differential gear 7, and likewise, the output from the engine 1 is transmitted to rear wheels 5, 5 through the traveling speed change gear C, a differential gear D with a differential lock mechanism 8 and left and right steering clutches 9, 9. Further, structure of the machine is such that the differential lock mechanism 8 is automatically and reversibly changed over to a differential lock operational condition in linkage to change-over of the traveling speed change gear C to a low speed stage. |
