Quick assembly frame for the body of commercial vehicles, and commercial vehicle

The quick-change frame (1) has a frame construction (2) with two longitudinal carriers (2.1) and two transverse carriers (2.2). A fastening element is provided for fixing the frame construction of the commercial vehicles. The fastening element is a pivot (3), which protrudes downwards from the level clamped by the frame construction. The pivot is formed as king pin for interaction with a fifth wheel of a tractor. A plastic grid has glass fiber reinforcement. An independent claim is also included for a quick-change frame with a wireless connection.