| 摘要 |
<p>The purpose of the present invention is to provide a rice planting machine that can carry out planting in accordance with the state of a rice paddy and the traveling state of the rice planting machine, by detecting the sink amount of a float and using the same in the control (vertical lift control) of the height of a planting section. Provided is a rice planting machine in which a planting section is provided with a float the height of which can be adjusted via a link and that is supported so as to be able to rotate in the pitching direction, and the height of the planting section is controlled so that the rotation angle of the float reaches a predetermined target angle. The rice planting machine is further provided with a surface detection sensor that is rotatably supported in the pitching direction and that detects the surface position of the rice paddy. On the basis of the rotation angle of the surface detection sensor, the sink amount of the float is measured and the target angle of the float is corrected so that the sink amount of the float becomes constant.</p> |
