Forward impacted plow for trenchers

Abstract

A plow trenching apparatus for a vehicle having a raisable boom and a trenching plow pivotally mounted at a distal end of the boom in a plow holder, to extend rearwardly and downwardly therefrom. The plow has an upper portion and a lower portion, with a forwardly protruding toe portion, and a forward facing cutting portion. The plow is pivotable in the holder about a pivot axis located behind the holder and behind the plow, as seen in the travel direction of the plow during operation. A pivoting motion is imparted to the plow by a vibrator arranged at the upper portion. The vibrator is arranged to impart vibrations generally in a vertical plane, so that the lower portion is pivoted generally back and forth in the travel direction. The vibrator can be located behind or in front of the upper portion. The vibrator can have two eccentric weights, each being rotatable around its axis in a plane, the two weights being synchronized in their rotation so that they pass and are 180 degrees apart at two points during the rotation. This arrangement creates a straight line oscillating motion in the plane. A hydraulic cylinder is connected between the blade holder and the plow blade to set the depth of the plow.

Dependencies are inferred from the claim text.