| 摘要 |
A carriage (10) for the transport and installation of heavy doors and other construction panels (25) includes a door-holding frame having side members (18) that are pivotally attached to a wheeled chassis (12). Independent drive mechanisms (31 37) provide accurate control over the elevation, tilt, and roll of a door panel held by the frame, and effect a precisely controlled, lateral movement of the panel relative to the frame.
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