Abstract: A construction vehicle includes a frame, at least one drum, and a vibratory system. The vibratory system includes a first eccentric weight, a second eccentric weight, and a shift assembly adapted to vary an amplitude of the vibratory system. The shift assembly includes a shaft member adapted to move along a first axis for changing a position of the first eccentric weight relative to the second eccentric weight. The shift assembly also includes an actuator and a fork assembly adapted to move the shaft member along the first axis. The fork assembly includes a fork fixedly coupled to the actuator. The fork assembly also includes a housing member concentrically disposed around the shaft member, wherein the fork is pivotally coupled to the housing member at a pair of pivot points defined proximate to the second end of the fork. The fork assembly further includes a bearing member.

Abstract: A construction vehicle includes a frame, at least one drum, and a vibratory system. The vibratory system includes a first eccentric weight, a second eccentric weight, and a shift assembly adapted to vary an amplitude of the vibratory system. The shift assembly includes a shaft member adapted to move along a first axis for changing a position of the first eccentric weight relative to the second eccentric weight. The shift assembly also includes an actuator and a fork assembly adapted to move the shaft member along the first axis. The fork assembly includes a fork fixedly coupled to the actuator. The fork assembly also includes a housing member concentrically disposed around the shaft member, wherein the fork is pivotally coupled to the housing member at a pair of pivot points defined proximate to the second end of the fork. The fork assembly further includes a bearing member.

Abstract: A utility compactor is disclosed that includes a roller disposed on top of and connected to a base plate. The roller has two opposing vertical supports. The compactor also includes an eccentric vibratory shaft extending between and rotatably connected to the two vertical supports of the roller. The eccentric vibratory shaft includes a first rotor shaft coaxially spaced apart from a second rotor shaft. The first and second rotor shafts are coupled together by an offset shaft. The offset shaft has an I-beam cross section and includes a first angled portion, a second angled portion and a center portion disposed between and coupling the first and second angled portions together. The first angled portion is coupled to the first rotor shaft; the second angled portion is coupled to the second rotor shaft.