Modern elevators are mainly composed of traction machines
(winches), guide rails, counterweight devices, safety devices (such
as speed limiters, safety gears and buffers, etc.), signal control
systems, cars and hall doors. These parts are respectively
installed in the hoistway and machine room of the building. Steel
wire rope friction transmission is usually used. The wire rope goes
around the traction sheave, and the two ends are respectively
connected to the car and the counterweight. The motor drives the
traction sheave to lift the car up and down. Elevators are required
to be safe and reliable, with high conveying efficiency, accurate
leveling and comfortable riding. The basic parameters of the
elevator mainly include rated load capacity, number of passengers,
rated speed, car outline size and shaft type, etc.BORAL Escalators
efficiently move large numbers of people with minimum waiting time.
However, they operate constantly regardless of the number of
passengers they carry. Therefore, even a small decrease in energy
consumption produces substantial savings. BORAL has made a number
of improvements to the drive mechanism in its easy-to-maintain top
machine room, which has been proven superior over many years of
experience. An approximate 25% reduction in energy consumption has
been achieved by enhancing drive transmission efficiency and
reducing friction.
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