A mechanical lift is also known as an elevator. It is a machine or a vehicle that transports either goods or people (or both) between floors of a building. The first historical elevator was found in the writings of the Greek writer Vitruvius, who mentioned a contraption built by Archimedes. Many of these early elevators were either powered by animals or by hand. In the mid 1800's a mechanical lift was invented that was powered by hydraulics.Traction Mechanical Lifts
Mechanical lift products can assist with lifting, moving and transferring items and people. Large scale mechanical lifts are permanent fixtures within a building which allow movement of individuals or equipment through the push of a button, and eliminate the need for traverse stairs or ramps. There are a range of sizes to suit varying needs and are usually multi storey and built into a building at the time of construction.
Mechanical lifts can be added to buildings post construction if required. For example, if, an individual becomes wheelchair bound following an accident, the mechanical lift can eliminate the person’s need to climb stairs to access upper floors of a building. Professional advice needs to be sought regarding the suitability of the building to be modified, local government approval requirements and compliance .
Traction lifts are powered by motors. Geared traction lifts are powered by DC or AC motors. These motors use rolling steel hoists over a drive sheath that hoists the cables using a gearbox that it is attached by a high powered motor. Other lifts are powered by gearless motors. In this case, the drive sheath (the cable that is connected to the lift) is directly attached to the motor. In either case, the motor is attached to a plate on the top of the lift that is looped over to a counterweight that helps reduce the amount of power necessary to move the lift at a controlled ratehttp://www.jobaccess.gov.au/JOAC/Adv..._elevators.htm