Public works machine, such as a hydraulic self-propelled articulated shovel
OwnerSerge Dufourinventor
Life of this patent
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Abstract
This invention relates to a public works machine such as a self-propelled hydraulic shovel. This machine comprises a lower chassis provided toward one end with a pair of carrying wheels mounted on wheel-carrying arms that may be adjusted and raised, and toward the other end with raisable stabilizers. A superstructure is mounted on this lower chassis by a positioning ring. The superstructure carries, on the one hand, working equipment of the machine and, on the other hand, a pair of carrying wheels mounted on raisable arms. The control of the machine is effected by pivoting of the two parts about the positioning ring. This machine permits travelling on uneven ground while the machine remains level.
Claims10
Public works machine such as a self-propelled hydraulic shovel, characterized in that it comprises, in combination, a lower chassis (1) provided with two carrying wheels (3) and stabilizers (5) that may be raised or lowered, and a superstructure (10) carrying a working device (12) and rotatably mounted on the lower chassis (1) for rotation relative to the lower chassis about an upright axis, a pair of carrying wheels (17) being disposed on this superstructure, means (15, 18) being provided to displace this pair of carrying wheels between a position in which they bear on the ground and an elevated position, whereby the chassis may bear on the ground selectively by the first-mentioned wheels and said stabilizers or by said first-mentioned wheels and the wheels disposed on the superstructure.
Dependencies are inferred from the claim text.