Koepe friction winder request form for rope quotation and for technical evaluation Skip factor empty skip mass payload How is rope tension monitored Manual Load Cell Max rope speed m/sec South Africa is definitely THE mining country I d Follow us
Get PriceIn underground mining a hoist or winder is used to raise and lower conveyances within the mine shaft Modern hoists are normally powered using electric motors historically with direct current drives utilizing Ward Leonard control machines and later solid state converters however modern large hoists use alternating current drives that are variable frequency controlled
Get PriceImproved Productivity Enhanced Safety Levelok s Cage Holding System has been providing safe and rapid transfer of workers material and ore with mine conveyances used in vertical shafts since the 1980s The Levelok Cage Holding System consists of a power pack and clamps which hold a cage steady during the transfer of men and/or material
Get PriceIn underground mining a hoist or winder is used to raise and lower conveyances within the mine shaft The mine hoist Power Swing Reduction PSR system is used to reduce the peak power that the mine hoist draws from the electrical network during acceleration The required peak power drawn from the network can typically be reduced by 40%
Get PriceWhat is a winder in mining Industrial rock winders on mines are used to hoist skips which contain reef or waste rock from the different underground mining levels to the surface These rock winders use a lot of electrical energy and contribute to the high power demand of electricity in South Africa
Get PricePost by Wheldale onFeb 26 2024 at 12 55pm In SA the slack rope device is a piece of wire suspended accross the rope opening in the engine house If the cage stuck in the shaft the idea was the rope would go slack pull on the wire and trip the winder Of course this wouldn t work if the cage was deep enough that the weight of the rope in the
Get PriceOn 10 February 2024 there was a high potential incident at the Osborne Mine resulting in the rope on the fixed winder drum detaching from the skip/cage Read the Report into winder brake failure at Osborne Mine on 1 March 2024 PDF 1 3MB Fatality at the Grasstree coal mine Middlemount Queensland on 6 May 2024 On 6 May 2024 a coal mine
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
Get PriceUpgrade rock winder Upgrade stage loadi ng and conveyances 61 lvl 96 lvl 106 lvl 126 lvl Main pumps Main shaft Vent shaft Ore passes 11 Ton Skip and Cage Dual Purpose 15 5 Ton Skip 3 Deck Man Cage Mine call factor 350%
Get PriceThe mine winder motor may be a D C motor win Ward Leonard speed control or slip ring motor with rotor resistance starter is preferred The centrifugal pumps are used in mining for various jobs like pumping water The high torque squirrel cage motors which do not have any maintenance problems are selected
Get PriceKey words deep shaft mine hosting Blair winder rope safety factor drum sizing skip of skip factor from 0 5 to 0 4 result s in a and reliability of the ultradeep mine hoist are
Get PriceJointly sponsored by the China University of Mining and Technology and the University of Nottingham UK a total of 187 papers have been included in the proceedings of which fifty two are contributed by authors outside of China The rational acceleration inverse solving of mine hoisting winder s driving system By Youduo Peng Deshun
Get PriceThis paper presents a comprehensive literature review for mine hoist drives Both DC and AC drives with their control techniques are discussed with a comparative study on their performance Many recent control techniques using power electronic based systems are also discussed The future trend in this area is also addressed This review paper is the first of its kind information source
Get PriceThe Southern African Institute of Mining and Metallurgy Platinum 2024 101 S M Rupprecht MINE DEVELOPMENT ACCESS TO DEPOSIT S M Rupprecht University of Johannesburg Abstract A deposit to be mined by underground methods can be accessed by a number of methods • Adit • Decline or ramp • Inclined shaft • Vertical shaft
Get PriceFIG6 Calculated skip capacity based on typical mine hoisting system parameters for vertical shaft drum winders The family of curves show the effect of increases in rope breaking load MBL on the skip rock capacity with maintained rope mass per unit length and diameter 500 1000 1500 2024 2500 3000 3500 4000 0 10 20 30 40 50 60 70 80 90 100
Get Priceto 14 5 tonne factor meaning that the winder s capacity of at least 20% each skip hoisted weighed at least that says Pretorius Next we looked at buffer much The new skip increased
Get PriceShaft mining is a form of underground mining where shafts are pushed vertically from top to bottom to excavate the ores and minerals It is also called shaft sinking It is best suited for concentrated minerals such as iron coal etc which can be found at the depth of the earth s surface
Get PriceMining trucks Siemens Mobile Mining provides diesel electric and trolley powered drive systems suitable for haul trucks that are used in open pit and underground mines Our portfolio contains hardware and software solutions for 20 to 60 ton underground trucks as well as drive systems for 90 to 450 metric ton surface mine trucks
Get PriceABB has the unique capability to design supply install and provide long term service and support of entire mine hoist mechanical and electrical systems We supply friction hoists as well as drum hoists of various types We also supply the shaft equipment necessary for productive hoisting processes ABB mine hoist solutions provide low life
Get PriceOriginally built for the Bunny Tin mine in 1846 by Harvey s of Hayle During the 1880 s it was moved to Greensplat Pit in the centre of the Clay Area Finally it was moved to Poldark Mine during the winter of 1972 Poldark Mine Museum 3 The centrepiece of Poldark Mine the preserved Cornish Beam Engine
Get Price2 3 Skip and cage factors and rope factors of safety Bottom skip and cage factors empty conveyance / payload including attachments was taken as 0 7 and 1 0 for the Stage rock and Stage man winders respectively For the top skip and cage factors including attachments the following values were used Stage rock 1 1 Stage man 1 6 BMR rock 0 7
Get PriceAll safety critical load bearing components are designed for static and fatigue conditions and incorporate a minimum static safety factor in excess of 10 1 MATERIAL SPECIFICATIONS All safety critical load bearing components are manufactured from 1 5% manganese steel to BS2772 Part 2 1989 Group 2 150M19 in the hardened and tempered condition
Get PriceDNRME Osborne winder report 2 Details of the winding system The winder used at the Osborne Mine is a double drum winder A drawing of the skip/cage arrangement and a sketch of the winding system are shown below The rope is underwound on the fixed drum shown in green and attached to the skip/cage The rope is overwound on the clutched drum shown in red and attached to the counterweight
Get PriceSockets are used on a variety of mining rope applications including hoist balance guide and sinking ropes The socket attachment offers a safe economical connection and can be installed on site with wirelock resin Northern Strands designs and manufactures two main types of sockets threaded and open spelter
Get Priceare designed with a minimum of 10 1 factor of safety proof load tested to 2 5 times safe working Load ultrasonically and wet magnetic particle inspected and come complete with test certificates and relevant QA/QC documents All attachments are available with or without wear bushings made in metallic or synthetic material The major advantage
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Get PriceMine Hoist Technology Answers the Bell Challenged by skip capacity for new or refurbished shaft systems has routinely exceeded previous capacity by 25% to 50% with hoist speeds up to 50% faster than older equipment industry continue to be the steel wire ropes associated with hoisting machines where rope performance is a key factor in
Get Price2 If the number of hours worked at a mine is less than 3 000 per month subregulation 1 does not apply to the mine until 1 January 2024 or a later date specified under subregulation 3 3 The Director in a notice published in the Gazette before1 January 2024 may specify a date occurring after that date for the purposes of subregulation 2
Get PriceThere is a convention that is used in determining the direction of the spooling of rope Point the index finger in the direction of the rope with your fist in the place of the drum If this layout is matched with your right hand than the rope is a right lay and vice versa If the back of your hand is facing you the rope is in an overwind setup
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