In Drum type hoisting devices , the li�ing medium is continuously wrapped around a drum . Unlike the friction type where the load is directly hoisted from the top , in drum type hoist the pulling mechanism is connected to a drum , which is to the other side of load across the headframe and sheaves . �e headframe and sheaves are required to center the hoisting medium in the sha� compartment . Drum hoists are the most common hoists used in North America , South Africa and South America . �ey also require the least amount of maintenance among all hoist types .
Single drum : In a single drum hoist , a rope is attached to a drum and wound and is used to hoist the load through an overhead pulley .
Single drum hoists are found to be more efficient than double drum hoists for most of the applications .
Friction ( Koepe ) type Unlike drum hoists , friction hoists are economic options for shallow sha�s . �ey are mounted right above the mine sha� or at the top of headframe , thus requiring less space than drum hoists . �e li�ing medium is passed over a pulley with the load connected to the one end of the li�ing medium . �e friction between the pulley and the li�ing medium aids the hoisting . �e friction between the pulley and the li�ing medium prevents the load from sliding in the opposite direction when the weight is pulled up using gears and pulleys . Developed by Frederick Koepe in 1877 , the li�ing medium is not wound on a drum , and hence multiple hoists can be used near to each other . Friction hoists require more routine maintenance than drum hoists and are not suitable for hoisting from multiple loading pockets on different horizons within a sha� .
Blair multi-rope type �e Blair multi-rope hoist system is used for accessing much deeper mines and can be found in many of the world ' s deeper mines , such as in South Africa . One of the mines that use this type is the Moab Khotsong Mine where it is used up to 3,150m . It has a capacity to access a depth of up to 5,000m . www . bmgworld . net