Engineering & Mining Journal

APR 2013

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VDMA The EQ200 from dhms can be fitted with a range of attachments. GHH's LF-11H is equipped with a fuel-saving Efficient Drive System. both diesel- and electric-driven machines as well as scalers, concrete mixers and other specialist vehicles. Recent innovations include the introduction of a new drive train, according to the company's managing director, Mortimer Glinz. This, he said, can give up to 20% savings in fuel costs, given that mining companies are aiming for greater efficiency and lower per-ton costs, as well as improving operator comfort. "Our portfolio includes some very sophisticated products, with hydrostatic drives and Canbus systems for very detailed machine control and better ergonomics," he said. "As an example, because operators repeatedly need to turn their head while driving, we can equip the machines with turnable seats— giving them better operating conditions and less stress. On the other hand, some customers need machines that are a simple as possible to operate and maintain. We have seen a parallel trend developing in recent years." New machines from GHH include the SLP-6 LHD, a 6 mt-capacity low-profile loader for the South African market, the 12 mt-capacity LF-12H, a high-tech loader now in use at one of Kali & Salz's operations in Germany, and the 18 mt-capacity electric-drive LF-18HE. The company has also recently launched a range of mixer trucks and a hydrostatic-drive scaler, which uses scraping rather than hammering to free loose rock from heading roofs. As an example of the speed with which GHH can respond to customer requests, Glinz cited a recent order from the French contractor, Vinci Constructions, for a fleet of 37 vehicles. Having won the contract to develop a new production level at Codelco's El Teniente copper mine in Chile, Vinci ordered the units in September 2011, with GHH shipping the first machine in January 2012. "During the year, we delivered 32 of them, with the remainder scheduled for delivery in 2013" he said. "We won the order because we were able to react quickly, and could customize the machines during production," he explained. For instance, Vinci wanted person-detectors fitted for improved safety, and the engines needed modifications for the altitude. Because of this order, we have now established a subsidiary in Chile. It was very complex and challenging to meet Vinci's requirements at short notice, but GHH has proved that it is flexible enough to do so." Specialist Drilling, Cutting and Loading Machines Today part of Deilmann International Mining & Tunneling GmbH, Deilmann-Haniel Mining Systems (dhms) specializes in the production of roadheaders, drill rigs and loading/dinting machines for underground mining. Its sister company, Canada-based J S Redpath, now includes Deilmann-Haniel's shaft-sinking services, while dhms focuses exclusively on its range of mining machines. "Dhms can design and build complete roadway driveage systems," said the company's sales manager for Europe, Michael Maas. VDMA 10 "Roadheaders, drill jumbos, bolters, loaders and dinters, back-end systems, drill rigs for methane drainage, drilling tools—in fact everything that the customer needs. "We have been actively developing new markets in Russia, China and South Africa, and have added our new roadheader family to our product list," Maas added. "After a year-long development programme, we now have three roadheaders working in the Czech Republic and three in Russia—with the next three machines scheduled for delivery in early 2013." Currently available in three versions, the R60t and R75t with a telescopic boom and the R75 without, dhms' roadheaders are designed for cutting rocks up to 80 or 100 MPa respectively. As an example, the R75 carries 355 kW of installed power, 200 kW of cutting power and is designed for heading sections of between 14 and 31 m2. Wide crawler tracks help distribute the machine's 77 mt weight, while it stands just 2.5 m high. Customizing is common, and Maas told Best of Germany that one Russian customer had requested a modification to a slewable conveyor overhang on its machines, enabling them to load direct into shuttle cars rather than on to a bridge conveyor. A key safety feature on these machines is the use of two separate remote-control systems, one for cutting and one for operating the on-board bolting rig. Dhms has also developed its own 15 kW hydraulic drifter for use on its drill rigs. A key feature here is the unit's very short length, while it can use a range of interchangeable male and female shanks and can be run on non-flammable fluids. "The short drifter gives more usable drilling depth relative to the overall feed length, which is important for bolting feeds," Maas said. Highly innovative, dhms' EQ200 compact underground excavator can carry a whole range of tools on its boom, allowing it to be used with different buckets for loading, as a drilling/bolting machine, with a hydraulic hammer for scaling, or with a working platform. Basically designed for multi-function use during shaft-sinking, the excavator can also be used effectively for underground infrastructure work, the company believes. Practical Vehicles for Underground Mining Founded in 1968, Hermann Paus Maschinenfabrik GmbH has been supplying equipment to the mining industry for almost 40 years. The company says that right from the beginning, it was successful in breaking into markets in the CIS countries, where it remains one of the major suppliers. It also had significant involvement in the mechanization of Germany's coal mines during the 1980s, when rubber-tired vehicle technology was introduced. However, with the decline in coal mining in Germany and elsewhere in Europe, Paus is now using its experience in flame-proofing for other markets in the world, such as in China, where it has a joint venture for manufacturing personnel carriers for coal mines. The VDMA MINING SUPPLEMENT • 2013

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