| 摘要 |
A "no-lift" container trailer is disclosed having a vertically movable roller tray with parallel rollers thereon which when tangent to the roll plane, and solely support a container thereon allow the container to be moved onto or off the trailer. A vertically movable caster tray of the trailer has fixed caster wheels thereon with their axes of rotation intersecting a vertical axis near the center of the trailer. When the wheels provide sole support for the container at the roll plane the container may be rotated about the vertical axis to any desired position. Manually operated cams are provided to sequentially move only the rollers tangent to the roll plane for supporting the container only on the rollers to move both the rollers and wheels tangent to the roll plane, and to move the rollers below the roll plane for supporting the container only on the wheels thus transferring the containers between the rollers and the wheel at the roll plane without lifting the container. Container stops, guide rails and latches are responsive to movement of the wheels tangent to the roll plane to move the stop guide rails and latches to inoperative positions. |
