Malmedie launches new hoist system arrangement for STS cranes

German coupling and system specialist Malmedie has launched the ISC-HOIST system at the TOC Europe conference in Amsterdam.

The system aims to address the problems experienced on ship-to-shore (STS) standard main and boom  hoists with regard to emergency-stops or sudden power cut-offs. In these circumstances, the rotational kinetic energy (inertia) of the motors cannot be immediately removed – and this energy generates peak overloads to the drive train and specifically to the gearbox against the closed brakes.

Additionally, due to the “traditional” dual brake circuits (high speed service brake and low speed emergency brake), damaged bearings, gears and other components occur due to the resulting tooth flank change of the gearing.