Engineering & Mining Journal

APR 2018

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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MOTORS AND DRIVES 68 E&MJ • APRIL 2018 ily, which the company said is designed specifically for conveyor applications and combines the advantages of the hydrody- namic drive principle with intelligent con- trol technology. Voith has high expectations for in- dustry acceptance of the new coupling family, which was developed to answer the needs of its mining customers. Ma- jor design features, explained Kyle Klut- tz, vice president, NBS Mining & Metals Americas, who spoke with E&MJ's Jesse Morton at the 2018 SME annual meet- ing and exposition in February, include high-power density, a simplified but so- phisticated hydraulic system, lower capex requirements, and suitability for both new and retrofit applications. "This coupling is a new spin on con- ventional controlled-fill couplings. We've redesigned the hydrodynamic circuit so that the coupling enables almost double the torque from the existing footprint," he said. The 500-kW rated TurboBelt 500 TPXL requires only half the volume of conven- tional fluid coupling types with the same force transmission, according to Kluttz, while the integrated controller makes it possible to adapt the output torque of the coupling exactly to the startup parameters of the conveyor system. The controller monitors the coupling's entire sensor ar- ray and and provides vital operational in- formation, such as the condition of the oil filter. That information can be accessed remotely via the web, a capability which, Kluttz noted, isn't new to the industry, but is a first for this type of drive. The hydrodynamic circuit of the cou- pling limits the torque in the driveline to a fixed, defined value, which protects the belt and the drive components from damage due to overloading. This cuts maintenance and repair costs and in- creases the lifetime of the system. Mo- tors can be run up to speed under no- load conditions and staggered in time, thus minimizing current peaks that occur when motors are switched on, and also reducing the load placed on the power grid. The TurboBelt 500 TPXL's built-in Fieldbus unit, according to Voith, lays the foundation for the device to play a role in networked mining of the future. "These features put us on the leading edge of drive technology, and are con- sistent with our aim to offer customers the opportunity to develop 'intelligent mining,'" said Kluttz, who added that the company sees opportunities for fu- ture sales in both new project installa- tions as well as retrofit projects entailing conveyor-system repowering, extension or tonnage capacity increases. With the introduction later this year of two high- er-powered TPXL models offering 850 and 1,250-kW capacities, respectively, Voith expects industry interest to expand to prospective customers planning or currently running conventionally driv- en high-powered conveyor systems. For installation flexibility, Voith will offer versions with bearings on both sides for stand-alone use as well as a variant with bearings on the output side for direct motor connection.

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