| 摘要 |
A drawn moldboard plow includes a lift linkage for the rear furrow and ground wheels which improves ground penetration by causing the plow frame to roll as it is lowered so the share points contact the soil first. A hydraulic cylinder contained within a part of the frame operates both the furrow and the ground wheels through a linkage which, during retraction, raises the ground wheel at a faster rate than the rear furrow wheel so the plow frame rolls in the direction of the ground wheel. If the ground wheel reaches its plowing position determined by an adjustable stop before the furrow wheel, a lost motion connection allows continued retraction of the cylinder to further raise the furrow wheel to its plowing position.
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