| 摘要 |
<p>The rotary plough has a plough frame which carries ploughshares and can be turned about its longitudinal axis into the two working positions and the transport position. At its front, tractor-side end, the plough frame is connected with a timing device and at its rear end, it is supported by steerable wheels. The turning device is formed by a hydraulic pivot drive, supported on a frame suspended on the tractor. The wheels have a hydraulic steering device which is connected with a forward-mounted, hydraulic control cylinder which is operated when the tractor negotiates corners and effects a pressure column displacement.</p> |
