| 摘要 |
A method and apparatus for forming a relatively shallow drainage ditch diagonally across crop rows, the apparatus, drawn or fitted to a tractor, incorporates a rotating cutting disk set semi-vertical and at obtuse angles to the direction of travel. The disk is adjustable in two planes and is driven either by direct drive from the tractor's PTO or by hydraulic motor. The replaceable disk is fitted with slinger plates to insure proper removal of the excavated earth. An adjustable cutting tooth is provided in front of the disk for breaking the soil prior to being cut by the rotating disk. A trailing wheel or foot skid, in conjunction with a flexible upper connection of the three point hitch, is provided to control the cutting depth of the tooth and cutting disk, thereby allowing the tooth and cutting disk to follow the contour of the earth. The apparatus is also mountable to the front of a tractor, if desired, when the disk is driven hydraulically. The breaker tooth may also be mounted independently to the front of the tractor for breaking levees prior to ditching, thereby allowing tractor egress.
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