Lifts today

The basic types of lift can be defined by operating mode, each having its ideal application. Governing factors are the required performance in speed and capacity as well as running costs.

according to pulley arrangements. The most economic working is obtained with the electric traction unit mounted above the lift shaft. Mounting the traction machinery at or below the lowest floor served will reduce the shaft overrun to about 1 500 mm and save the cost of a construction at roof level. However, there are much higher running costs and greater loading on the shaft due to head pulleys. The selection of basement machinery rooms usually arises due to difficulties with accommodating structures above top floor level in conversion work or where architectural considerations limit the skyline. However, the greatest range of capacity, travel and speed can be obtained with roped systems employing overhead traction units.

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