OPERATIONS MANAGEMENT
To successfully transfer heavy loads of materials over long distances, mine conveyors
need reliable and responsive braking systems
and integral terms, both individually and in relation to one another, to get the most suitable output and response: maximising performance, productivity and efficiency. Tis task requires extensive knowledge on how mining conveyors should move in different situations. Tis insight can be gained by leveraging the power of Big Data. In systems such as SOBO iQ, all the sensor data points obtained by the braking controllers are accessible and can be used by mine operators. In this way, they can identify key patterns as well as having real-time, remote monitoring capabilities to make on- the-fly adjustments when needed. As a result, the system helps operators to implement the IIoT within their mining facilities.
CONTROLLING WORLD’S HIGHEST DOWNHILL MINE CONVEYOR A coal mine in Colorado, USA, needed a braking control system for its two downhill longwall panel conveyors. Te challenge arose in maintaining a consistent stopping time of 35 seconds, even as the length of the conveyor changed as the longwall machine retreated. Svendborg Brakes’ SOBO iQ offered the ideal system. Its dual-loop PI control, coupled with advanced functions, such
as independent overspeed monitoring, rollback, gearbox and out-of-band monitoring, allowed the operators to ensure consistent stopping times in any situation.
REMAIN IN CONTROL
A mine in Chile wanted a solution that would minimise the effects of power failures on its conveying operations. Te most important aspect consisted in providing parking and tension control during a power failure. By ensuring that tension in the conveyor’s belt is maintained, equipment stress would be minimised. To address this issue, Svendborg Brakes decided to apply a torque feedback sensor on its SOBO iQ. In this way, the system would monitor the line pull of the take-up winch cable, rather than conveyor’s speed, thus gathering actionable insight into the actual tension. Tanks to this smart brake modulating set-up, the Chilean mine could maximise reliability and equipment service life.
Tilman Speer is with Svendborg Brakes.
www.svendborg-brakes.com
COMPACT MODELS OF HYDRAULIC GENERATORS LAUNCHED
hydraulic generators are lighter and smaller than previous versions. They can be up to 95% smaller than diesel generators with equivalent power. In addition to the smaller dimensions, the new models produce excellent electricity quality due to automatic voltage regulator combined with
N
ew super compact models of the Dynaset hydraulic generator were introduced in March. The
automatic frequency control. The Dynaset HG hydraulic generator
converts the hydraulic power of machines, vehicles and vessels into electricity. The company provides hydraulic generators with a power range of 3.5kVA-350kVA with impressive reliability and a highly compact size. A new set of standard HG hydraulic
generator models with 60HZ frequency has been introduced. The six new standard 60Hz models operate in the power range of 3.7kW – 30kW. The more powerful models are available by request. The Super Compact hydraulic generator models have NEMA 3 rating. Most of the standard
generator models produce steady 240VAC electricity. Standard models of 3.7kW
and 6kW are available at 120VAC. Dynaset can also adjust the voltage by a customer’s preference. Dynaset has also introduced 12
new 50Hz standard Super Compact models in the power range of 3.5kVA- 80kVA. The hydraulic generators have an AVR automatic voltage regulator built-in starting from the power rating of 6.5kVA and above. The Super Compact model HG 3.5kVA
hydraulic generator is smaller than the previous model and it is 2kg lighter. The 3.5kVA 50Hz model uses a new type of hydraulic motor that is also included in a 3.7kW 60Hz model. Most of the generator models have built-in AVR that provides steady voltage. Together with Dynaset automatic frequency control technology, they guarantee the best electricity quality.
For more information visit
www.dynaset.com
www.engineerlive.com 31
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