| 摘要 |
<p>A crop harvesting header (22) for use with a work vehicle includes a shaft (60) extending substantially transverse to a direction of travel of the header, the shaft (60) rotates about its axis (62) in response to a portion of a member (64) contacting a first arm (48) when the header (22) is in the first operating mode. The shaft (60) does not rotate about the shaft axis (62) when the header is in a second operating mode. A second arm (66) rotates about the shaft (60) in response to ground undulations (58) when the header (22) is in the second operating mode. A sensor (80), operatively connected to the second arm (66) and to a controller (86), senses when the second arm (66) is located at a predetermined position when the header is in the second operating mode. The sensor (80) communicates with the controller (86) to effect movement of the header with respect to the ground (56) when the header is in the second operating mode.</p> |
