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Issue link: https://coal.epubxp.com/i/110818
product news continued prevent chain breaks as well as gearbox and motor break downs in the future. The couplings provide a lot of benefits for AFC drives. ���Based on the hydrodynamic principle, the fluid couplings protect the whole drive train from overload situations, which often happen at Chang Ping,��� said Mao Weihong, head of the mechanical and electrical department of Chang Ping. ���The 562 DTPKWL2-1000 couplings are so powerful they can easily handle blockages of the AFC without downtime or damage of the equipment.��� Mao is very satisfied with the change. He compliments the reliability of the couplings and especially their soft start function. ���For upcoming mining projects, we will also rely on Voith fluid couplings to raise our productivity,��� Mao said. Since the installation of the couplings in 2009, the AFC has experienced no chain breaks. This also means significantly reduced maintenance efforts. Nowadays, the 225 m (740 ft) wide and 1,000 m (3,300 ft) long coal panels produce a yearly output of 3 million tons. www.voith.com lengths of 41.88-inches and in styles of full, half and three-quarter coverage. www.superior-ind.com Ventilation Ducting TruOval layflat blower ducting has been specially engineered to maximize air flow and increase headroom in underground environments. The design reduces air flow friction and maximizes head room without compromising air flow output. Engineered with suspension cables spaced intermittently through the ducting to maintain its oval shape, the suspension system eliminates the fabric divider typically found in oval layflat ducting. Its oval shape also allows for more headroom in confined spaces and accommodates higher profile underground equipment. www.website.com Conveyor Covers Superior Industries��� new belt covers are rigid and strong. The corrugated steel construction proves to be almost infinitely stronger than any smooth steel. Each cover is built standard with 22-gauge steel, which is folded at the edges to nearly double the strength at this crucial point of stress. The corrugated design also benefits installation and maintenance efforts, removing a requirement for additional supports. That means on their own the covers are self-supporting. Also, installation is not dependent on the location of an idler frame. Instead, owners can attach the covers with self-tapping screws at any point along the length of a conveyor���s structure. They are available in standard sizes up to 60-inches wide, in February 2013 www.coalage.com 51