MINE HOISTS
KTR Systems hoist brakes
Among mining hoist brake solution suppliers , the KTR-STOP fixed caliper brake ( disc brake ) from Germany ’ s KTR Systems GmbH is a typical hydraulic service brake used on the low torque side . All features of these hydraulic brakes are designed to operate reliably under adverse ambient conditions while generating low operating expenses . The brakes can be provided with adjustment of the air gap keeping the airgap and consequently the reaction time of the brake constant . The brake caliper M-D is designed as a fixed caliper brake ( hydraulic service brake ). The active fixed caliper brake can be provided with adjustment of the air gap keeping the air gap and consequently the reaction time of the brake constant . The option to wear off the pads almost completely allows for long maintenance intervals while optimising the operating expenses . These were used on a recent 2.5 m hoist installation at a gold mine in Mpumalanga , South Africa , supplied with 4 x KTR- STOP M Series 150 B passive fixed caliper brakes , together with two GEARex FA all-steel gear couplings . This KTR hoist application is for man riding and production . The brakes have a clamping force of 150 kN each , while the couplings transmit torques of 17,000 and 135,000 Nm . KTR has a new R & D centre at its HQ in Rheine and a new competence centre for Brake Systems in Schloss Holte-Stukenbrock . Other KTR references include for a platinum mine in Limpopo province on a man riding hoist : KTR-STOP M Series passive fixed caliper brakes , together with two GEARex FA all-steel gear couplings ; and at a gold mine in Northwest province for both a double drum stage hoist and double drum emergency hoist : KTR-STOP M Series passive fixed caliper brakes , together with two GEARex FA all-steel gear couplings and for the stage hoist one redundancy hydraulic unit operating all the brakes .
A gold mine in Mpumalanga , South Africa , was supplied with 4 x KTR-STOP M Series 150 B passive fixed caliper brakes from KTR Systems
headquarters and largest manufacturing facility is in Woodstock , Ontario , Canada . The company told IM : “ Timberland first and foremost is a hoist , tensioner , winch designer and manufacturer for the mining industry . Timberland designs and manufactures mine service hoists , production hoists , general purpose material hoists , personnel hoists , mine construction hoists , rescue system hoists & cages , rail car puller systems , rope tensioning systems , reel winders , solid and split sheaves , E-Houses , low to high voltage VFDs , local and MCC controls , and conveyor belt tensioning systems . We ’ ve been building equipment specifically for the mining industry since the late 1960s and comply to several regulatory codes including SANS , MSHA , Ontario , CE , TRG , SIL compliance , and more .”
Timberland ’ s recent delivery included a SIL 2 rated winch system to GCR Mongolia , for Oyu
Tolgoi shaft 3 and 4 . The Oyu Tolgoi mine is a
Hepburn Hoist Manager HMI screen combined open pit and underground mining project in Khanbogd sum within the south Gobi Desert , approximately 240 km east of the Ömnögovi Province capital Dalanzadgad . GCR Mongolia was awarded the contract to develop shaft 3 and 4 in 2019 , and Timberland was subcontracted for the project . Timberland ’ s supply included four 70,000 kg and four 40,000 kg linepull stage winches , including SIL rated VFDs ensuring a high level of safety . In addition , the two new headframes required several split sheaves which were also designed and fabricated at Timberland ’ s Woodstock facility . With the complication of Covid , the Timberland team were able to complete the task at Oyu Tolgoi with the SIL 2 certification .
Another project recently delivered in 2020 was for Harrison Western and Shaft Sinkers joint venture who were requested to sink a 695 m ventilation shaft at the Waste Isolation Pilot Plant ( WIPP ) in Carlsbad , New Mexico . The US Department of Energy ( DOE ) Carlsbad Field Office ( CBFO ) and Nuclear Waste Partnership ( NWP ) is expanding the repository for military and researchrelated radioactive waste . The JV awarded Timberland to design and supply stage winders , a double drum kibble winder , shaft mucker winders , and sheaves to fully equip the project . The single clutch double drum hoist was selected to handle the kibble and to service the shaft . “ Timberland is very pleased with these two projects and we look forward to return to site once COVID-19 travel restrictions are lifted as we seek the utmost success for our clients endeavours .”
Hepburn ' s complete hoisting solutions
Toronto , Ontario-headquartered Hepburn Engineering Inc ( HEI ) designs and supplies complete mine hoisting systems with fully integrated electrical controls , digital drives , including its state of the art Hepburn Hoist Manager software and digital safety monitors .
90 International Mining | AUGUST 2021