Abstract: Dump truck bodies are mounted to truck frames by a hinge so the truck body can pivot about the hinge to eject a load from the truck body. Loads carried by these vehicles can be extreme and the cyclical stress can generate cracks in the hinges. An upper pivoting connection of a dump truck hinge has side members each with a mounting portion that join to the sides of rails of the body and a lower pivot portion. The upper hinge structure is pinned to a lower hinge portion on the truck chassis at the pivot portion. Bracing between the sides add strength to the pivoting connection.

Abstract: A truck body with geometric features that improve material flow while the truck body is being tilted and the payload is being dumped. These geometric features influence the discharge of the material in the truck to better empty the truck body during dumping and lessen the risk or effect of carryback. The truck body geometry results in less dribble, less hang up, and less carryback. The overall discharge time is also often reduced.