| 摘要 |
<p>An agricultural pneumatic seed drill (10) has a main frame (12) with a centre frame (30), plus left and right side-frames (32, 34). The main frame has an operating position and a transport position. The mid- and two side-frames each has a hollow pneumatic distributor (36). The hollow distributor has individual plant unit. The mid-frame pneumatic distributor is automatically connected to the side frames by an elastic bell-cover (74), forming a pneumatic link between the mid- and side-frames as soon as the main frame (12) is presented to the operating position. The pneumatic distributors are linked to the plant dosing unit by hoses (68).</p> |
