| 摘要 |
<p>A reversible moldboard plow has a plow carrying beam (40, 41) swingably mounted at the rear crossbar (12) of a frame which carries trunnion mounted cylinders (50, 51) connected to the beam for moving the beam, the front of the frame carrying hitch pins (33, 34) for connection to a tractor hitch, the hitch pins being vertically movable in alternate relation in order to tilt the frame and the beam with the moldboards supported thereon. The hitch pins may be moved by independent cylinders and pistons (27, 28) or, alternately, by the movement of a transverse hitch bar on which they are mounted. <IMAGE></p> |
