The Elevator Speed Governor: A Critical Safety Component

In the elevator safety system, out of control overspeed can be considered the most terrifying emergency situation, and the speed limiter monitors the car’s running speed in real time through a precise mechanical structure. Once the speed exceeds the safety threshold, it will instantly trigger a series of protection mechanisms, using powerful braking force to force the out of control car to slow down abruptly and finally come to a stable stop

How Does It Work?​

The speed governor operates on a simple yet effective principle. Connected to the elevator car via a cable, it continuously monitors the elevator’s speed. When the elevator exceeds the predetermined safe speed limit—typically 115% of the rated speed—the governor springs into action. It triggers a series of mechanisms that first activate the brake system and, if necessary, engage the safety gear, which clamps onto the guide rails to bring the elevator to a halt.​

Importance of Regular Maintenance​

Like any safety device, the speed governor requires regular inspection and maintenance to function reliably. Dust, debris, and wear can compromise its sensitivity. Professional technicians should check calibration, lubrication, and mechanical components at recommended intervals. Neglecting maintenance not only violates safety regulations but also puts lives at risk.​

Compliance with Standards​

International safety standards, such as those set by ISO and local regulatory bodies, mandate strict requirements for speed governor design and performance. These standards ensure that governors can respond appropriately to various overspeed scenarios, including both upward and downward movements.​

Conclusion​

The elevator speed limiter embodies the innovative spirit of prioritizing safety in engineering design. As an important line of defense against catastrophic failures, it provides peace of mind for millions of elevator passengers every day. Regular maintenance and adherence to safety standards are crucial to ensuring that this critical component remains reliable when it is most needed.​