Mining Mirror May 2018 - Page 35

Cradle to grave Winding down on the western limb Becker Mining South Africa’s winding rope attachments at a mine on the western limb of the Bushveld Complex. Installation of Becker Mining South Africa’s winding rope attachments at a mine on the western limb of the Bushveld Complex is now complete and ready to be put into full production. “Four sets of head rope attachments and four sets of tail rope attachments are required for the 4.5m-diameter drum Koepe winder, which accommodates 38mm head ropes and 40mm tail ropes,” says Tom Searle, senior general manager at Becker Mining. A Becker Thimble-type capel is fitted to the ropes, with a hydraulic adjusting linkage fitted between it and the conveyance. This linkage ensures there is equal sharing of the load between the four head ropes. Complete 30t Rocket-type safety detaching hook sets were supplied for the man/material winder, which has a 4.88m drum and 51mm ropes. A set of 5t Rocket-type safety detaching hooks was manufactured for the service winder, which has a 26mm rope fitted. Rocket safety detaching hooks are designed to detach the winding rope from the conveyance in the event of an overwind, and arrest and suspend the conveyance in the headframe. This patented design caters for the prevention of partial detachments whilst in service. Becker Mining also supplied WRC clamps that were used during installation and will be used in the future maintenance of ropes. A complete spare set of rope attachments was also supplied to the mine. Hook sets, which were supplied complete with catch plates and jack catch boxes, are mounted in the headgear as a critical safety feature to prevent injury to personnel and damage to the shaft infrastructure should an overwind occur. MAY 2018 MINING MIRROR [33]