| 摘要 |
A vehicle having wheel-supported forward and rear frame sections which are pivotally interconnected for swinging relative to each other about an upright axis. The wheels supporting the forward frame section are steerable relative to the forward frame section, and power-operated means is provided for swinging the forward frame section relative to the rear frame section. The vehicle may be steered either by steering the front wheels, swinging the forward frame section, or by doing both. A grader blade is mounted on and follows the movement of the rear frame section. A loader boom and bucket are mounted on the forward frame section and follow the movement of the forward frame section. The grader blade extends transversely of the vehicle, and is extensible. The grader blade includes elongated blade sections connected by pivot means permitting swinging of the sections relative to each other about an axis extending longitudinally of the vehicle. This pivoted construction allows the blade to produce either a crown or a valley contour in the material it works.
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