Abstract: An excavation apparatus includes a base structure mountable to a vehicle, and a first supporting member pivotally coupled to the base structure. The first supporting member is pivotable about a pivot axis that is generally parallel to a lateral direction between a retracted position and an advanced position. A second supporting member is rotatably coupled to the first supporting member. A rotary spindle is supported by the second supporting member and extends lengthwise along a cutting axis and is rotatable thereabout for driving a cutting element. When the first supporting member is in the advanced position, the second supporting member is rotatable about a rotation axis that is generally parallel to a longitudinal direction between a stowed position in which the cutting axis is generally parallel to the lateral direction and a deployed position in which the cutting axis is generally parallel to a vertical direction.

Abstract: An excavation apparatus includes a support structure mountable to a truck bed, the support structure defining a longitudinal direction extending front-to-back of the truck bed, and a lateral direction extending side-to-side of the truck bed. The apparatus further includes a rotary spindle pivotably supported by the support structure at a first pivot joint defining a generally horizontal first pivot axis, the spindle extending lengthwise along a spindle axis and rotatable thereabout for driving a cutting head; the spindle pivotable about the horizontal first pivot axis between a stowed position wherein the spindle axis is generally horizontal, and a deployed position wherein the spindle axis is generally vertical. The support structure includes a first adjustment device for adjusting the position of the spindle in the longitudinal direction when deployed, and a second adjustment device for adjusting the position of the spindle in the lateral direction when deployed.