A truck bed is provided with an upwardly projecting frame to which the front end of the upper leg of a Z-shaped support structure is pivotally mounted for movement about a horizontal transverse axis. The standard is adapted for pivotal movement about a generally horizontal axis, and the lower leg is pivotally mounted to the standard for movement about a horizontal transverse axis. Preferably, respective hydraulic rams are provided for producing movement about the two horizontal axes. At the rear, the lower leg of the support structure is provided with upwardly concave crandles for respective vehicle wheels. Winches, booms, safety chains and the like preferably are provided.