Tecnologias que estão transformando a maneira como as pessoas se movem em edifícios.

O autor analisa os fatores que impulsionam o desenvolvimento da tecnologia VT.

Por Rajnikant Lad

The rapid growth of construction activities, urbanization and infrastructure development has significantly increased the demand for elevators and escalators worldwide. Changing building designs, increasing urban density and the trend toward high-rise and supertall structures have compelled the vertical-transportation (VT) industry to continuously innovate and adopt advanced technologies.

Gone are the days when most projects required elevators operating at speeds of only 1 m/s or 2 m/s with a limited number of units. Today, the increasing height and complexity of buildings have pushed elevator speeds beyond 20 m/s in some of the world's tallest towers. Modern market requirements, user expectations, energy efficiency goals and the need for faster project delivery are driving technological advancements across the VT industry.

Major Technological Advances in VT

1) Gearless Drive Technology

The introduction of gearless traction machines has been one of the most significant developments in elevator technology.

Benefícios:

• Maior eficiência energética
• Requisitos de espaço reduzidos
• Menores requisitos de manutenção
• Maior vida útil
• Funcionamento mais suave e silencioso
• Qualidade de passeio melhorada

Today, gearless drives have become the preferred choice for most passenger elevators, particularly in medium and high-rise buildings.

2) PU-Coated Flat Ropes (Flat Belts)

Conventional steel wire ropes are increasingly being replaced by polyurethane (PU)-coated flat ropes in modern elevator systems.

Principais Recursos:

• High-strength steel cords embedded within a polyurethane coating
• Raio de curvatura menor
• Reduced weight compared to conventional ropes

Vantagens:

• Smaller traction sheaves and machine sizes
• Reduced motor power requirements
• Menor consumo de energia
• Reduced wear on pulleys
• Desempenho de tração aprimorado
• Níveis mais baixos de vibração e ruído
• Better ride comfort
• Maior vida útil
• Enhanced resistance to corrosion and wear

Flat rope technology has enabled the design of more compact and efficient elevator systems.

3) Fiber Rope Technology

The introduction of fiber ropes is expected to be a game-changing development for the elevator industry.

Vantagens:

• Significantly lighter than steel ropes
• Reduced machine and motor loading
• Menor consumo de energia
• Reduced rope sway
• Longer travel capability
• Improved performance in high-rise applications

Fiber rope technology is helping overcome the limitations imposed by the self-weight of conventional steel ropes and is enabling the development of taller buildings.

4) CNT Suspension Technology

Carbon nanotubes (CNTs) are microscopic cylindrical structures made from carbon atoms arranged in a hexagonal pattern. They are among the strongest and lightest materials known and are being actively researched for future elevator applications.

Benefícios potenciais:

• Relação resistência-peso extremamente alta
• Dramatic reduction in rope weight
• Lower motor power requirements
• Increased travel heights
• Reduced rope sway
• Maior eficiência energética

In supertall buildings, the weight of steel ropes becomes a major design limitation. CNT-based suspension systems could potentially eliminate this challenge and enable much taller elevator travel distances.

CNT technology also gained attention through theoretical concepts such as the "Space Elevator," which proposes a cable extending from Earth into space.

5) Linear Motor Elevators

Linear motor technology represents one of the most revolutionary developments in VT.

Unlike conventional traction elevators, linear motor systems use electromagnetic forces to move the elevator car directly.

Características Principais:

• No traction ropes
• No counterweights in certain designs
• Direct electromagnetic propulsion

Vantagens:

• Elimination of rope weight limitations
• No rope stretch
• No traction loss
• Reduced rope sway and oscillation
• Improved performance in seismic zones
• Suitable for supertall buildings

Possibilidades futuras:

• Movimento vertical
• Movimento horizontal
• Movimento lateral
• Circulating elevator systems
• Multiple elevator cars operating within a single shaft

Linear motor technology has the potential to redefine elevator design, particularly for buildings exceeding 500 m in height.

6) Vacuum Elevators

Vacuum elevators operate using air pressure differentials and are becoming increasingly popular in residential and low-rise commercial applications.

Vantagens:

• O design compacto
• Minimal structural requirements
• Operação com eficiência energética
• Instalação rápida
• Suitable for two to three stop applications
• Attractive architectural appearance

These elevators offer an excellent accessibility solution for homes, villas and small commercial buildings.

7) Digitalization and Smart Elevator Systems

The future of the VT industry is closely linked with digital technologies.

Tendências emergentes:

• Elevator integration with Building Management Systems (BMS)
• Monitoramento remoto
• Análise de desempenho em tempo real
• Detecção avançada de falhas
• Manutenção preditiva
• Diagnósticos baseados em IA
• Conectividade da Internet das Coisas (IoT)

Spectrum Expansion of the VT Industry

The application spectrum of VT systems is expanding rapidly beyond traditional residential and commercial buildings.

Áreas de crescimento:

• High-rise residential developments
• cidades inteligentes
• Aeroportos e centros de transporte
• Hospitais e estabelecimentos de saúde
• Metro and railway stations
• Religious and pilgrimage destinations
• Accessibility solutions for elderly and differently abled individuals
• Instalações industriais e armazéns
• Desenvolvimentos de uso misto
• Infraestrutura turística

The growing emphasis on accessibility, urban mobility and smart infrastructure is creating substantial opportunities for the VT industry.

The VT industry is entering a new era characterized by innovation, digitalization, sustainability and expanding application areas. Technologies such as gearless drives, PU-coated flat ropes, fiber ropes, linear motor systems and future carbon nanotube suspension solutions are transforming the way people move within buildings.

Simultaneously, digital technologies such as predictive maintenance, remote monitoring and intelligent building integration are improving safety, reliability and operational efficiency.

As urbanization continues and buildings become taller, smarter and more complex, VT systems will play an increasingly critical role in modern infrastructure. The coming decade is expected to witness unprecedented technological advancements, making the VT industry one of the most dynamic and innovative sectors of the built environment.