Classroom on demand

Welcome to Classroom on demand, your source for educational materials related to the vertical transportation industry. This site represents the knowledge and expertise of the best engineers and mechanics in the elevator industry, and will help those new to the elevator industry learn about the basic workings of elevator systems, and also will serve as a reference for people with more experience.

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1 Glossary

BedplateA steel or cast-iron platform on which a machine is placed
Blocking BeamsSteel placed on machine beams to raise the level of machine room e...
Double-wrappedRoping arrangement on gearless traction elevators, where the hoist...
Gear - RingA large gear driven by the worm gear which is attached to the drive s...
Gear - WormA spiral gear connected to and driven by the motor and which drives t...
Machine RoomA room where traction machines or hydraulic power units for elevator...
Machine Room-Less (MRL) ElevatorInitials for Machine Room-Less elevator. There ...
Sheave – DeflectorA pulley aligned with the drive sheave, which provides a path ...
Sheave – DriveThe grooved wheel of a traction machine over which hoist ropes are...
Sheave – SecondaryA pulley on a gearless machine which serves two purposes - 1. ...

4 The Traction Elevator

Machine ModuleA traction machine is used on all traction elevator equipment type...
Geared MachineTraction = A traction elevator configuration uses ropes (cables) t...
Geared Traction Drive SheaveThe geared traction drive sheave has "V" shaped groo...
Gearless Traction MachineThis example shows the drive system of an overhead gear...

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