INDIA 2018

Best of Germany 2014 - Mining Equipment and Mining Technology

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Page 36 of 51

VDMA 35 2018 • VDMA MINING SUPPLEMENT Mine Duty Air Hoists JD Neuhaus air hoists have been designed specifically for mining and other underground applications including their M series air hoists. They operate off a 4-bar pressure and can be supplied in lift capacities of 1, 2, 3 and 6 metric tons (mt). Twin chain pulls are provided for alternate working and all hoists feature a top hook mounting to accommodate oblique or horizontal pulling of loads. These products can be equipped with two optional control systems for single- or two-handed operation. The DS system, which is designed for the two-handed operation, has compressed air connected to the hand-control valve. A built-in pressure regulator prevents hoist overload in the event of inadmissi- bly high air pressure. An oiler, situated directly at the hoist motor, is operated from the controller housing to ensure the oil flow automat- ically ceases when the hoist stops. The operating air immediately initiates the motor when the hand lever is activated. This lever is spring-loaded and returns automatically to zero position when re- leased. This forced release also serves as an emergency stop. The optional PS control is for single-handed use with emergency stop fitted as standard. It operates indirectly with a compressed air supply connected to the control valve of the motor. The control pistons of the motor are actuated by the hand control push buttons, which au- tomatically return to zero position. In the control valve of the motor, a pressure regulator protects the hoist from inadmissibly high pressure, while the integrated oiler provides the necessary lubrication. The Profi TI series hoists are also suitable for underground work- ing and operate off air pressures of 4 or 6 bar, with hydraulically op- erated units also available. Lift capacities from 250 kg up to 100 mt are available with traverse trolleys for overhead monorail operation also available for lift ratings up to 20-mt maximum capacity. A Profi TI hoist with 37-mt lifting capacity was recently used for the safe and successful handling of an assembled 1,000-m string of pipeline. This involved the connection of individual pipeline sec- tions, each 8 m long, to create a completed string weighing 30 mt, which had to be positioned within a shaft. These compact hoists offer excellent weight/load ratios, with the Profi 37 TI having an all-up weight of 880 kg (with a standard 10-m chain length) while providing an impressive 37.5-mt lifting capacity. The elimination of any electrical power supply for drive mechanisms or ancillary equipment eliminates the potential for ignition risk, while increased spark-protection features ensure the highest ATEX ratings for hazardous area operation. Hydraulically operated hoists can also be provided where a compressed air supply may not be readily available. Communications for Mine Rescue Equipment Rescue operations have been and are still one of the most challenging jobs in the mining industry. During training, rescue teams of five to six members are confronted with demanding situations that push them to their limits, both physically and mentally. Some of the possible sce- narios they face include bad visibility, presence of toxic and/or explo- sive gases, fire and smoke, rock fall and injured miners. Exceptional training, which for many includes competitions at state and national levels, prepare them well — to quickly assess the risks and to know how to deal with them. The need for a clear exchange of information is imperative in these critical circumstances, and verbal communication is usually the pre- ferred option. A rescue team needs to be able to talk to the fresh air base, the surface, to miners and to each other. Today, traditional technology such as mining telephones is still widely used. Mine rescue teams carry their own cables for communication. They do this for good reason—it works. Unfortunately, there are certain limitations that could result in miscommunication, misunderstanding and wrong decision making. Modern communication technology has been available for years and is a common tool for everyone. This same technology is used in under- ground mines for a completely different challenge, however. Here, the con- ditions are extreme. The rescuers face harsh environmental conditions, such as humidity, water ingress, danger of collapse, risk of explosion, fire as well as excessively handled equipment. Modern communication needs to support the task of a mines rescue team, not distract from it. The Dräger FPS-COM 5000 is a communication device that is de- signed to fill that gap. It attaches to the widely used Dräger FPS 7000 RP full-face mask easily. In addition, it includes a voice amplifier that is voice activated, so it is hands free, allowing for more mobility. Every unit has an interface that connects to a radio with a cable or via Blue- tooth. Connections to the most frequently used radios underground are available. All the rescuer needs to do is simply press the push-to- talk button to activate the voice communication through the radio. If a mine is already equipped with communication infrastructure and ra- dio, the Dräger FPS-COM 5000 can be easily integrated and is ready to use for applications underground as well as above ground. In keeping with the Smart Mining vision, the FPS-COM 5000 fits as an integrated part of the communications' system within the team and fresh air base, which is crucial in order to concentrate on the job at hand. Some mines also require cable-supported communications for its rescue teams to be able to work independently from the infra- structure of the mine. Therefore, a version for such an application is in preparation. It would work independently from any other pos- sible stationary-installed system. This means that op- erating the Dräger FPS-COM 5000 would be the same as any cable-supported communication system. It would include the voice amplifier, but instead of using a radio cable, it would connect the team to the fresh air base independently. First introduced at the 2016 International Mines Res- cue Competition in Canada, the Dräger FPS-COM 5000 was tested by a total of 27 teams. The communication system was tested and tried under realistic underground rescue scenarios and received impressive, positive feed- back. It was also commended as a viable and positive solution with real benefit for the future of mines rescue. JD Neuhaus Profi 37 TI hoist successfully handles a 1,000-meter-long pipeline string weighing 30 metric tons, being positioned within a mining shaft. The FPS-COM 5000 communica- tion system has been integrated into the Dräger full-face mask.

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