| 摘要 |
A movable bed trailer includes a U-shaped frame mounted on a pair of oppositely-disposed wheels and is adapted to be pulled behind a vehicle. A load bed is vertically movably supported by the frame by means, in one embodiment of the invention, of oppositely-disposed pairs of links on opposite sides of the load bed for swingably connecting the bed to the frame to support the bed in substantially the same plane as the frame during movement of the vehicle and to lower the bed relative to the frame to rest on the ground for loading and unloading purposes. A drive mechanism is mounted on the frame to raise the bed by causing it to swing upwardly while enabling the bed to remain in a substantially horizontal disposition. The drive mechanism also permits the bed to swing downwardly under the force of gravity to rest on the ground.
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