Scientific paper ID 2613 : 2024/3

Recently, high-speed elevators have been increasingly installed in high-rise buildings and skyscrapers. In them, the car moves at a set speed of at least three meters per second on extremely straight rails to minimize transverse vibrations, which are extremely small. A high-speed elevator consisting of a cabin, a counterweight, and a machine unit, located at the top of the facility, is investigated. The steel ropes of these elevators are of great length and are usually four numbers. As a first approximation, the steel ropes are assumed to be weightless and inextensible. The elevator is modeled as a mechanical system with two degrees of freedom. One of the disadvantages of this classic construction is that there is a possibility that the vertical vibrations generated by the machine unit, using the ropes, will be transmitted to the cabin and deteriorate the comfort of travel. Therefore, it is placed on reinforced rubber pads on the foundation floor slab. An extremely important task for the designers of such modern high-speed elevators is to center the machine unit in such a way as to minimize inertial disturbances due to the presence of unbalanced masses. The article makes important conclusions and recommendations to designers and technical personnel who maintain such elevators.