Self-propelled Modular Transporter

SPMT, electrc control, independent steering

A self-propelled modular transporter or sometimes self-propelled modular trailer (SPMT) is a platform heavy hauler with a large array of wheels which is an upgraded version of a hydraulic modular trailer. SPMTs are used for transporting massive objects, such as large bridge sections,[1] oil refining equipment, cranes, motors, spacecraft, entire buildings, and other objects that are too big or heavy for trucks. Ballast tractors can however provide traction and braking for the SPMTs on inclines and descents.

SPMTs are used in many industry sectors worldwide such as the construction and oil industries, in the shipyard and offshore industry, for road transportation, on plant construction sites and even for moving oil platforms.

Self-Propelled Modular Transporters consist of modules with 4, 5, 6, and 8 axle lines. Load capacity differs per version, with a maximum of up to 44 tons per axle line. Each module can be fitted with its own engine and control (steering) system. The modules can be connected side-by-side and/or head-to-tail, to form large ‘platforms on wheels. SPMTs have the possibility of 360-degree steering of the wheels. This allows carrousel and sideway movements. Their deck height can hydraulically be adjusted by approximately 60 cm., enabling vertical lifting or lowering of the load. Due to their variety of combinations, SPMTs can lift and move virtually every heavy load. These trailers are mainly used for on-site transportation over limited distances.