| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a paddy field working machine capable of being switched to a state in which appropriate ground levelling capability can be exhibited by a ground levelling device according to the difference in various working conditions. <P>SOLUTION: The rotary ground levelling device which is driven to rotate around a horizontal axis between a travelling machine body and a working device includes a large-diameter ground-levelling rotator 62A and a small-diameter ground-levelling rotator 62B. The small-diameter ground-levelling rotator 62B is disposed in a region corresponding to the machine body front side of a sensor float 9. A ground-levelling control means is configured to be switched to a first control state in which the lower end t1 of the small-diameter ground-levelling rotator 62B is located higher than the bottom position t2 of the sensor float 9, or to a second control state in which the lower end t1 is located at the same height as the bottom position t2, or to a third control state in which the lower end t1 of the small-diameter ground-levelling rotator 62B is located lower than the bottom position t2 of the sensor float 9. <P>COPYRIGHT: (C)2012,JPO&INPIT |
