In 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 (thyristors), however modern … Meer weergeven Drum hoists are the most common type of hoist used in North America, South Africa and South America. When using a drum hoist the hoisting cable is wound around the drum when the conveyance is lifted. Single-drum … Meer weergeven The Blair multi-rope hoist is a variation of the double-drum hoist. It is used in extremely deep shafts as the second drums cable are used to balance the primary load. Meer weergeven • Hoist (device) • Pulley • Winch • Hard Rock Miner's Handbook Meer weergeven Friction (or Koepe) hoists are the most common type of hoist used in Europe, Asia and Australia. The friction hoist was invented in 1877 by Frederick Koepe. Friction hoists are mounted on the ground above the mine shaft, or at the top of the headframe. … Meer weergeven • Examples of hoists • Single-drum hoist • Double-drum hoist • Friction (Koepe) hoist • Blair-multi rope hoist Meer weergeven http://nkmz.com/en/2024/01/27/modern-mine-winder-for-kazakhstan-made-by-nkmz-pjsc/

Demounting of the old hoisting engine drum Installing a new …

WebUnit Descriptor. This unit covers the operation of manual winder in the resources and infrastructure industries. It includes organising for winder operations, hauling personnel, … Webmines, it is not applicable for use in coal mines. Case studies: China and South Africa. As mine hoists are a significant capital investment, efficient, safe and reliable systems are … founders holding co

Mponeng Gold Mine, South Africa - The World

Webroutine operation for moving mining supplies to the stoping areas or as a “special” movement of heavy equipment such as locomotives, is seen as a particularly … WebIt is generally accepted that the type of control obtainable with the Ward-Leonard drive is the most suitable for mine winder operation and all developments on other electrical drives … WebABB 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 … founders holiday ice rink