| 摘要 |
<p>An agricultural field sprayer is described, having a main boom center section rigidly mounted on a wheeled motive power source; wing sections of main boom hinged on either side of the center section are each supported on costarring wheels that can he locked in a non-castoring mode for transport; corresponding sections of spray boom and spray tubes with spray nozzles are mounted on the main boom sections to be rotated by rotation of the spray boom. Power from the motive source is used to rotate the boom. The hinged wing sections can move between an aligned working position along the axis of the center section and a transport position, trailing at right angles behind the center section for transport. In the working position, the power also is used to adjust the spray tube height, to accommodate variable spraying requirements. The wing sections of the boom are partly drawn, in working position, by rigid boom draws which are latched and unlatched from the motive power source by appropriate movement of the spray boom.</p> |
