Designing with gears - Gear units are being used in two diverse applications - one for coal export terminals in China, the other for driving escalators

摘要

FZG gear units from Flender have been supplied for two coal export terminals in north-east China for projects managed by Metso Minerals. For the largest project at Qinhaundao, gear units were supplied for three triple unit train car dumper systems, containing two drive assemblies per line for the dumper drives. Each set comprised 250kW drives with FZGs having extended centre distances, Siemens motors with VVVF drives, and three sets of brakes - two high-speed, one low-speed, along with Zapex couplings. For the marshalling system, each indexer drive is powered with 12 vertically mounted drive units (36 in total), fitted with torque limiting couplings, brakes and planetary gear units with extended shaft cartridges and pinions. These incorporate 90kW Siemens motors, controlled by WVF drives.