Self-supporting underfloor for motor-coach, has skeleton-like structure formed from elongate profiled elements for reinforcement and covered by planar elements so that smooth outer surfaces of underfloor are formed

摘要

The underfloor has a skeleton-like structure formed from elongate profiled elements i.e. metal profiles, for reinforcement. The skeleton-like structure is covered by planar elements e.g. sheet steel, aluminum sheet and plastic plates, so that smooth outer surfaces of the underfloor are formed. The profiled elements and the planar elements are firmly bonded by gluing or welding, connected in a force-fit manner by mechanical connectors e.g. screws or rivets, or connected in a form-fit manner. Gaps in the skeleton-like structure are foamed by light metal froths i.e. aluminum froth.