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MDA Technologies 4/2014

MDA Technologies 4/2014

Drive

Drive Technologies Reliable geared motors for bulk handling machinery in transshipment port China’s Wuhan Iron and Steel Group (WISCO), one of the largest companies in the nation’s steel sector, has built a new transshipment port to better handle growing quantities of imported ore arriving in the East China Sea. Various bulk handling machinery installed throughout the port by three different OEMs has one thing in common: in all of these supersize loaders, unloaders, and stacker-reclaimers, a total of over 170 geared motors supplied by German manufacturer Nord Drivesystems ensure everything stays reliably in motion. 20 MDA Technologies 4/2014

Now often billed as an island paradise, the Zhoushan Archipelago comprises more than 1,300 scenic isles and islets off the Chinese eastern seaboard. However, Zhoushan’s emergence as a popular tourist destination is a relatively new development. By contrast, its other role as a cen-ter of trade is steeped in an old tradition. Zhoushan’s major islands lie just a few miles off the coast, close to Ningbo in Zhejiang province and about 150 miles south of Shanghai and the Yangtze estuary. Even centuries ago, their proximity to these bustling cities and the Yangtze, one of China’s premier waterways, has made the Zhoushan ports the region’s chief entrepôts for all sorts of goods. In modern times, these have come to include industrial commodities such as iron ore, mostly destined for Wuhan Iron and Steel Group (WISCO), China’s oldest steel giant headquartered about 400 miles inland up the Yangtze. Though WISCO Drive solutions for port machinery Nord provides cost-efficient, reliable drive technology for all types and sizes of crane hoists and trolleys as well as conveyors. One of the world’s widest ranges of gear units enables OEMs and end users to fine-tune their individual solution for maximum efficiency and low maintenance requirements. A dedicated microsite, http://cranes. nord.com/, provides an over-view of drive technology for crane applications. Frequency inverters from Nord’s SK 500E line are an obvious match for Nord geared motors used in cranes. The robust, high-performance units provide an efficiency of more than 95 % and a typical overload capacity of 200 % for 5 s. Compatible with all standard bus interfaces, the units are easy to operate and program. Basic models feature an integrated brake chopper with management for brake motor control, which is ideally suited for use in hoist applications. Advanced positioning functions as well as various options including the costefficient “Safe Stop” feature according to EN 954-1 and EN 13849-1 are also available. operates a number of mines in China, highquality ore is domestically in short supply. Hence, the com-pany must source most of its iron from abroad. Water transport on the Yangtze is the obvious, highly efficient, and economic choice, but ore imports for the industrial group usually arrive in the East China Sea in very large ocean-going vessels. Inevitably, these must call at a coastal port, where cargo can be offloaded and transferred onto smaller ships – even on the lower reaches of the Yangtze, large freighters would be stopped cold at the river bridge in Nanjing. 10,000 dwt ships, on the other hand, can pass under it and make their way onwards to Wu-han. New port with super-size machinery Demand for WISCO’s products has grown steeply over the course of the last decade in par-ticular. As raw materials are needed in MDA Technologies 4/2014 21

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