VDMA

JAN-FEB 2018

Best of Germany 2014 - Mining Equipment and Mining Technology

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VDMA 33 2018 • VDMA MINING SUPPLEMENT charging capacity for one full pattern. The system is based on the Universa 50-2 with a Deutz TCD 2012 diesel engine, Posi Stop axles and a hydrodynamic drive line from Dana Spicer. The Universa 50 is equipped with an ANFO storage platform with a maximum capacity of up to 120 ANFO bags (22 kg each), a 500-l ANFO vessel, rotary vane compressor and a telescopic platform in the rear part of the machine to cover the full drilling pattern with a fixed-carrier positioning. The carrier with boom/basket at the rear is also the ideal platform for all kinds of emulsion units. An experienced driver can accomplish this changing procedure within a maximum of 5-10 minutes. In addition, the Uni 50 can be equipped with a working platform, which permits working heights above 7 m to cover 40-m 2 faces. All machines implement extended safety features. This concept enables the increase of charging time of every unit and the use of the 500-l vessel keeps the machine dimensions as compact as possible. With its famous hydraulic quick changing system, the Uni 50 can quickly switch cassettes to a scissor platform, cement mixer and sprayer, tire handler, diesel generator, loading platform, etc. High-pressure Pumps for Large Volume Flows The (water-based) hydraulic systems in various high-pressure plunger pump applications, especially longwall roof supports, are getting larger and larger. As a result, longwall operators are using multiple, large triplex pumps given that the volume flow of these pumps is limited by design and the high pressures involved. And, the cylinder size is limited by cavitation, which implies that it makes sense to produce triplex pumps with ratings of "only" about 400 kW. KAMAT has now taken the next step and developed, on the ba- sis of the thoroughly redesigned triplex pumps, the first quintuplex (five-cylinder) pumps with a rating of 530 or 800 kW and the capabil- ity to reliably deliver distinctly larger volume flows than triplex pumps. The advantages for the longwall operator result from "econo- mies of scale." A large pump is working far more cost-effectively than two or three smaller ones, and clearly needs less space — an important argument in most modernization projects. A lot of detailed design work was, however, required to transfer the basic concept of the triplex design to the quintuplex pump. The crankshaft, for example, is supported by multiple bearings, and the crossheads are oil-spray lubricated rather than splash lubricated so that sufficient lubrication of the center crossheads is ensured as well. KAMAT, nevertheless, managed to keep spare parts stocking economical through the use of many parts that are common to the Economies of scale: KAMAT has developed the first quintuplex (five-cylinder) pumps with a rating of 530 or 800 kW on the basis of the thoroughly redesigned triplex pumps. www.erlau.com Erlau AG | Erlau 16, 73431 Aalen, Germany | Tel +49 7361 595-0 Strength of steel and passion of men to protect equipment´s most important asset. ERLAU TYRE PROTECTION CHAINS – NEVER WITHOUT!

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