For mine hoists operating in very deep shafts ABB has developed ROC Rope Oscillation Control ROC is integrated into the electric drive system and is used to reduce longitudinal rope oscilla tions that may sometimes occur ROC helps to in crease rope life and provides a more comfortable riding environment for personnel in the elevator cages
Get PriceDeep Thinking Shaft Design and Safety for a New Generation of MinesAs increasingly deeper deposits are discovered and developed shaft sinking and hoist technology look for a new lease on lifeBy Simon Walker European Editor Shaft Sinkers Holdings has completed projects in Africa Europe South America the Middle East Asia and Australia
Get PriceSteel Wire Ropes for Shaft Mining Haggie was originally established to supply the growing gold mining industry with ropes for mine hoists Haggie mine hoist ropes have been used in the world s deepest shafts for over 75 years This section contains recommended mine winding ropes for all winder applications Breaking Force and Mass of Ropes
Get PriceGet the latest news on education in mining and courses every 2 weeks The course uses an array of succinct overviews video clips and infographics will guide you through a typical mining value chain Gain a holistic overview of mining from finding a deposit through to closing a mine Join an industry wide dialogue on best practices for
Get PriceMar 15 2021A mine hoist for hauling gold ore from the 252m level of an underground mine to the 101m level was designed with the objective of cutting ore tramming distance handling and transportation cost
Get Priceshafts are more often put down in soft rock and pass through faulted zones whereas the vertical shafts are usually in the fir m wall rock However in any well con structed shaft where the walls are reasonably firm shaft maintenance is a relatively small item of the mining expense and the lower first cost of the inclined shaft might easily
Get PriceFig 1 Mine hoist Mines are generally powered by using the electric motor Motorized mine hoists have made mining more rapid The most common type of mine hoist used in mining industry is drum type mine hoist These are mainly consisting of central drum sheave pulley and cage or skip In drum type mine hoist wire rope is wound on central
Get Price• Shaft shown drives a gear set that is transmitting 5 hp at 1750 rpm • Shaft is supported in self aligning ball bearings and gears are both 10 pitch 40 tooth 20° spur gears • Find torsional and bending stresses in shaft Example Problem 17 1 Design Stresses in Shafts August 15 2024 23 • Find the torsion in the shaft 2 6 hp
Get PriceA mine hoist includes a shaft with two drums mounted thereon one of which is turnable with respect to the shaft An arrangement is provided for adjusting the relative angular positions of the shaft on the two drums The movable drum is normally connected to the shaft by a friction clutch which is held in engagement by spring pressure and is released by the operation of a fluid pressure cylinder
Get PriceMine Hoist a set of machines and devices that are used to raise or lower personnel and loads in vertical or inclined shafts A mine hoist Figure 1 includes a hoisting machine hoist cables receptacles and sheaves; the sheaves are mounted on the Figure 1 Diagram of a mine hoist 1 hoisting machine 2 hoist cables 3 skips 4
Get Pricearticle{osti 6309312 title = {A new conveyance arrestor for mine shafts and haulage} author = {Stutchbury J F and Dymott K R} abstractNote = {Describes a new man riding conveyance arresting system developed to overcome disadvantages associated with existing designs The Selda arrestor system is based on a new concept developed at the request of mining companies which required a more
Get PriceShaft sinking for underground transportation purposes is a very complex technological process in mining and geotechnology which requires specific and specially designed technological equipment This technological process is dealt with for a long time since mining is one of the oldest industries in the world This book presents the technical papers that were presented at the International
Get PriceCompleted in 1920 this hoist made it possible for the Quincy Mining Company to extend its No 2 Shaft 92 levels underground an inclined distance of nearly two miles Besides being the world s largest steam powered hoist this Nordberg Hoist had some unusual design features which your guide will show you The building itself is also interesting
Get PriceThe shaft house is lighted tonight in memory of Ron Whiton a guiding light for the Quincy Mine Hoist Association for many years Among his many projects at Quincy for which he earned the Burton
Get PriceThanks to the advancements in metallurgy and mining technology customizing mine cages to meet transportation needs for specific mining conditions is now quite common Some of the options available when a cage is being manufactured include aluminum or steel construction safety mechanisms for friction or drum winder hoists a selection of shaft
Get PriceMining Publication Mine Shaft Conveyance Monitoring Monitoring conveyance position and wire rope load directly from the skip or cage top offers several significant safety and production advantages The Spokane Research Laboratory of the National Institute for Occupational Safety and Health NIOSH developed a shaft conveyance monitoring
Get PriceKeynote Speaker Richard Dick McIvor Mine Hoist Plant Design Fundamentals for Permanent Operation for Shaft Sinking 09 20 10 20 Session 5 09 20 10 20 Stream 2 / Session 1 10 20 10 35 Coffee break 10 35 12 05 Shaft Design & Construction A Case for Disruptive Innovation will be presented by George Sturgis George is
Get PriceMost experienced mine shaft hoist supplier FLSmidth Mine Shaft Systems has over 100 years of design and installation experience having installed over 500 hoist systems We have both designed and manufactured more Blair Multi Rope hoists than any other hoist supplier We are also the first company to successfully design and deliver a hoist with a winding depth of 3150 meters
Get PriceSee the Wikipedia page on the Quincy Mine No 2 Shaft The American Society of Mechanical Engineers made the hoist a National Historic Engineering Landmark in 1984 Their pdf file on the hoist provides excellent detail on its design And this web site provides fine detail concerning the Quincy Mine site Click on the thumbnail to the right for an engineering drawing of the Quincy Mine No 2
Get PriceSurface mining planning and design of open pit mining Geology Department Faculty of Science Tanta University Underground mining methods Tayyab Anwar Ore extraction by shaft mechanized mine at big depth 1 ore shafts 2 ventilation shaft 3 rockfill pass 4 ramp 5 orepass 6 ventilation rise 7 sublevels 8 waste pass 9
Get PriceThe first automatic hoist was built by Eric Cattrell at Lightning Ridge in about 1961 Hoists have a winch differential or slip type drum which is located on the surface of a mine and is used to lift a bucket of opal bearing claystone to the surface Find opal mining equipment ads in our Miscellaneous Goods category
Get PriceMine Shaft Conveyance Monitoring Author Deanna Baumann Created Date Thursday December 09 1999 2 30 38 PM
Get PriceThis paper presents a kind of intelligence control algorithm for the mine hoist control system Firstly the desired output of the system is described by a speed curve of hoisting process Then the structure diagram of the hoist system is constructed and the expert PID controller is designed based on the model of this control system; the expert knowledge base was established according to the
Get PriceDouble drum hoists can be used for all shaft depths ranging from about 100 meters to ultra deep down to 3000 meters Due to their independent rotation double drum hoists are well suited for multiple level mines where rope stretch can become a problem [4]
Get PriceShaft mining or shaft sinking is excavating a vertical or near vertical tunnel from the top down used to hoist ore to the surface Smaller mining operations use a skip mounted underneath the cage rather than a separate device while some large mines have separate shafts for the cage and skips Shaft Design and Construction 1 1
Get PriceA mine shaft is frequently split into multiple compartments The largest compartment is typically used for the mine cage a conveyance used for moving workers and supplies below the surface It functions in a similar manner to an elevator with the largest often double deck The second compartment is used for one or more skips used to hoist ore to the surface
Get PriceThe mine hoist gearbox comes in different output mechanisms and styles Available mechanisms include toothed pinion pulley or sprocket The output methods include double output shaft or shaft mounted bushing Also mine hoist gearbox products come in different output shaft and hollow bore sizes to meet your needs You can also opt for keyed
Get PriceAn overhead crane s hoist lifts and lowers a load by means of a drum or lift wheel in which chain or wire rope wraps around Hoists can be defined by two main characteristics The lifting medium wire rope or chain used to support the load The power source manual / hand powered electric powered or air powered used to perform the lift
Get PriceWhether you re designing a new mine looking to examine existing infrastructure or expanding capacity we have skilled shaft and hoisting experts who work with you to tailor designs to your needs We have experience in shaft configuration ground consolidation method sinking method and collar excavation We also offer shaft collar and vent plenum design and station design
Get PriceSome of the basic design fundamentals to be considered are hoist rope fleet and flight angles for good hoist rope coiling hoist rope harmonic frequency study to ensure that the hoist rope does not run at full speed at a rope resonance frequency head frame and shaft clearance diagrams to establish the optimum positions for the loading and
Get Price