In diesel-electric powered dredgers and cutter suction dredgers (CSD), high power generators are driven directly or via a gearbox by the diesel engines. For these generator systems VULKAN offers the flexible RATO couplings.
The pump systems are then each driven by high power electric motors, which are equipped with MESLU clutch systems and a flexible RATO coupling.
The essential function of the MESLU clutch is to protect the drive train against overload at nominal speed and power. In case of blockages, the clutch disengages the drive train and separates the pump and the electric motor from each other, so that the blocked drive train is not damaged by the rotational inertia of the electric motors.
Particularly in the case of cutter head drives, which run under an inclination of up to approx. 60° due to the system, high demands are placed on the drive train. Modern MESLU clutch systems with flexible RATO couplings help to protect the drive train, primarily the gears, from overloads and irregular shock loads.