Land vehicles – Wheeled – Articulated vehicle
Patent
1995-12-12
1998-02-17
Ellis, Christopher P.
Land vehicles
Wheeled
Articulated vehicle
2804071, 2801492, 180 2402, B62D 6112
Patent
active
057184437
ABSTRACT:
An axle assembly (10) is disclosed including a carrier (24) having side edges extending intermediate the frame rails (14) of a truck 12 and supports (28) secured to the frame rails (14). The carrier (24) is moved relative to the frame rails (14) by a screw (32) rotated about an axis by a hydraulic motor (36) to move a collar (40) threaded thereon and secured to the carrier (24). The carrier (24) is selectively locked in position relative to the frame rails (14) by simultaneously sliding first and second pins (44) slideably mounted to the carrier (24) into seats (58) fixed to the frame rails (14). The first ends of a pair of arms (66) are secured to an axle (60) having steerable wheels (62) while the opposite ends are pivotally mounted to the carrier (24). The arms (66) are pivoted relative to the carrier (24) by an actuator (70) to move the wheels (62) between ground-engaging and elevated positions. First and second arcuate brackets (84) are secured to the opposite ends of a rotatable shaft (80) and carry pedestals (86). A hydraulic cylinder (88) rotates the shaft (80) to place the pedestals (86) in a horizontal, transport position and a vertical, lock-out position with the lower ends of the pedestals (86) abutting with the axle (60) and their upper ends vertically in line with and for abutment with stop pads (94) secured to the supports (28).
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