Abstract: A heavy-load modular vehicle having at least one axle, one steering, and coupling device not only can be coupled with at least one further heavy-load module and/or further transport apparatuses, but optionally also can be pulled out, particularly also telescoped. It has a central longitudinal support having at least one open face side, in which a pull-out support is guided. The metal cover sheet of the loading surface can take on the function of the upper belt of the central longitudinal support and leads to a self-supporting construction. A box-shaped lower belt counteracts twisting or torsions of the vehicle frame in the case of a trough-shaped design. A universal coupling head, particularly a bolt/tab coupling, makes it possible to couple on heavy-load modules having a different width, different tires and/or a different height, without an additional adapter.

Abstract: With an apparatus for changing the length of the loading surface of vehicles, particularly trailers and semi-trailers, wherein a vehicle can be equipped with a central support configured as a tube or trough and an inner support that can be pushed into and pulled out of the former, the known disadvantages are supposed to be avoided, particularly a solution is supposed to be made available for the fact that the trailing chassis does not have to have any comprehensive preparation for later extensibility. This is achieved in that attachment elements for a ring beam are provided on the vehicle, wherein the inner support is provided with a ring beam that is open on the top side or a ring beam that is closed all around and has an upper brace.

Abstract: A heavy-load modular vehicle having at least one axle, one steering, and coupling device not only can be coupled with at least one further heavy-load module and/or further transport apparatuses, but optionally also can be pulled out, particularly also telescoped. It has a central longitudinal support having at least one open face side, in which a pull-out support is guided. The metal cover sheet of the loading surface can take on the function of the upper belt of the central longitudinal support and leads to a self-supporting construction. A box-shaped lower belt counteracts twisting or torsions of the vehicle frame in the case of a trough-shaped design. A universal coupling head, particularly a bolt/tab coupling, makes it possible to couple on heavy-load modules having a different width, different tires and/or a different height, without an additional adapter.