| 摘要 |
<p>Support means for use in connecting a circular harrow to a tractor, comprising: a support frame, a support bar, and a carrying frame. The harrow is rotatably connected at the center thereof to the support frame by connecting means,the support bar being connected to the support frame at one end of the support frame, and the carrying frame being connected at this one end of the support frame, the carrying frame and the support bar being pivotally connected to the tractor. First pivot means are provided on the support means permitting a connected harrow to pivot about a first, generally horizontal axis extending generally radially from the center of the harrow toward the center of the tractor; second pivot means are also provided on the support means, the second pivot means permitting the connected harrow to pivot about a second, generally horizontal axis extending generally transversely to the first axis, the second pivot means being carried by the carrying frame .</p> |
