elevator
1874 AD (1252 solar) It is a turning point in the history of the elevator; When the elevator changed from a simple lift to a safe and reliable vertical transportation system, it paved the way for the growth of tall buildings..
1874 AD, the beginning of the era of safe elevators:
Otis company introduced the first safe hydraulic elevators. Use of safety brake system (Safety Brake) It prevented the cabin from falling if the cable broke. This innovation increased public trust in the elevator.
1880s (1258 solar)The birth of the electric elevator:
In 1880, Werner von Siemens built the first all-electric elevator. Eliminating steam and hydraulic power led to an increase in speed, height and productivity, and laid the foundation for the formation of skyscrapers..
Elevator inspection
1920s, standardization and urban growth:
Introduction of DC motors, pulley system and balance weight and development of sliding doors and basic control systems
1930s, progress in safety and mechanics:
Development of speed governor, improvement of brake system and cabin guide
Increased capacity and available height
1950s, the revolution of AC motors:
Replacing AC motors instead of DC, reducing maintenance costs and increasing life span, smoother movement and less energy consumption of elevators.
1970-1980s, electronics and automation:
Introduction of advanced electronic and relay controls, optimization of waiting time and group management of elevators, development of high-speed elevators for tall towers.
1990s, digital control:
Using microprocessors and PLC, error detection, intelligent monitoring and safety, increasing the stopping accuracy and comfort of elevator movement.
21st century, smart and green elevators:
Gearless motors (Gearless) High efficiency, energy recovery system (Regenerative Drive)High-speed elevators (+10 m/s) And
New technologies like MULTI (Movement without cables)
Since 1874, the elevator has evolved from a risky mechanical lift to a smart, safe, and energy-efficient vertical transportation system. The progress of elevators is directly tied to the development of mechanical, electrical, control, and material engineering, and without it, modern architecture would be practically impossible..