Lifts-info
A lift is a type of vertical transportation equipment that efficiently moves people or goods between floors of a building.
Elevators are generally driven by either an electric motor with traction cables combined with a counterweight system or a pump
pressing hydraulic oil to move a cylindrical piston.
Lift types:
- Hydraulic lifts
- Mechanical lifts
- Hydraulic / Mechanical lifts with VVVF
- Lifts without a machine room( MRL)
- Eco-Lifts
- Load lifts
Today’s lifting technology is a direct evolution of the impressive lifting technology of the ancient Greeks who negotiated
theoretically great Greek engineers such as Archimedes, Heron, etc.
In 1852 Elisha Otis was working as a chief engineer at the Bedstead Manufacturing Company in Yonkers, New York.
He was tasked with designing a freight elevator to move the company’s products.
Otis was aware of the inherent problem of wire rope breaking and sought to find a solution that would eliminate the risk.
In 1854 Elisha Graves Otis designs and builds the first elevator with a safety brake for transporting people & performed for
first public demonstration of the safety elevator at the Crystal Palace exhibition, New York.
Today, the technology surrounding buildings is evolving and new safety, quality & speed.
Elevators have become an integral part of cities around the world.
The “baroulkos” windlass
A mechanism consisting of interlocking worm screws and gears within a box and used to lift or pull large loads with the application of minimal force.
The mechanism is described in detail by Heron but its inventor was Archimedes who with a similar mechanism (more cogwheels and endless screws) launched a gigantic ship with the power of his one hand,
saying: “Give me a place to stand and I will move the earth” extolling his capabilities.
