Joy 14ED25 Miner Bolter Designed for Safety and Productivity
Thursday, March 25th, 2010
Joy Mining Machinery has developed the JOY 14ED25 miner bolter with a rugged sump frame mechanism allowing simultaneous cut and bolt operations. The machine has been specifically designed for the Pittsburgh No. 8 seam and other thin-to-medium seam applications 1.8 to 3.0 metres (6 to 10 feet) with good roof conditions.
Two newly designed rugged AFX drill feed units with increased thrust are positioned behind the cutterhead and used to simultaneously insert two 1.8 metre (6 foot) bolts while the machine is cutting out for the 1320mm (52 inch) advance cycle. Rib drills are also available for simultaneous rib drilling for one or two rib bolts on each side.
The machine has been extensively proven underground with six machines currently in operation, and several more 14ED25 machines on confirmed orders. Operating results have been impressive with the machines achieving monthly averages of 18 to 30 metres (60 to 100 feet) per 8-hour operating shift. Peak advance rates of over 91 metres (300 feet) in a single shift have been achieved on several occasions.
The 14ED25 miner bolter has been built to be rugged and long lasting, and to out last other miner bolters operating in the US mines. Reliability performance has also been impressive with the six operating machines achieving from 90% to 99% monthly availability. The design aim was to achieve up to three times the operating life of standard miner bolters prior to the first major rebuild, and early indications after over 10 months of operations are extremely positive.
Safety is of major concern to Joy and the 14ED25 has been designed to address this issue. The machine is equipped with roof canopies and rib protection shields, as well as incorporating good operator working locations which are ergonomically designed to protect the operators and make their jobs safer and easier. Also, by offering increased drivage rates and semi-mechanized operations, the number of operators in the working area is reduced.