The basic form is the roped elevator, which consists of a cab and a counterweight, working as a good bucket and using an electric hoisting machine for efficient rising and lowering.Among these rope elevators, the most common type of those with hoisting machines and a control system in a machine room on the roof these commanded an overwhelming share of the market until 1998,

When the machine room Lois elevator was launched in Japan.These elevators drive units, and control systems are housed within the shaft.Rooftop machine rooms are still used for high speed and high capacity elevators requiring large hoisting machines. As our reference example, let’s look at elevators’ structure and operating principles using a basic elevator with a machine room.