High-Speed Elevator Traveling Cable Patent Addresses Wind and Pressure Issues
A patent (CN102855988B) describes a high-speed elevator traveling cable with an oblong cross-section designed to address challenges in tall buildings, such as wind-induced sway and pressure.
Key Innovations:
Oblong Cross-Section: The cross-section is substantially oblong, increasing the cable's thickness and preventing it from being rolled by guide rail wheels.
Depressions for Wind Stability: Two depressions at the ends of the long axis act as "root posts" stretching the cable under vertical hoistway wind action, minimizing lateral shift.
Hollow Airbags: Two hollow airbags are arranged inside the cable to increase flexibility and improve anti-pressure ability when the cable is squeezed, protecting the cable core without damage.
Aramid Fiber Ropes: Multiple aramid fiber ropes are arranged in the cable to increase stretching resistance and serve as tear lines.
The design uses a large-diameter circular arc cylinder at the short-axis ends to reduce the impact of horizontal hoistway airflow, allowing the cable to twist but not shift transversely under wind force.
