Over Speed Governor

An "Over Speed Governor" is an important safety device used in elevator systems to prevent the elevator car from moving at excessive speeds, thus ensuring passenger safety. It is a critical component that is designed to activate if the elevator's speed exceeds a predetermined safe limit.

Function:

The Over Speed Governor is connected to the elevator's car or counterweight through a cable or a rope. If the elevator accelerates beyond a certain safe speed, the governor is designed to engage and act as a mechanical brake, bringing the elevator to a controlled stop.

Safety Mechanism

In the event of a primary brake failure or any other situation that causes the elevator to gain excessive speed during its descent, the Over Speed Governor acts as a vital secondary safety mechanism to prevent uncontrolled movement and potential accidents.

Installation:

The Over Speed Governor is typically installed at the top of the elevator shaft, where it can effectively monitor the elevator's speed during both upward and downward travel.

Activation

When the elevator's speed exceeds the safe limit, the centrifugal force generated by the rotating governor activates the braking mechanism, which engages with the guide rails or other components in the elevator system, halting the elevator's motion.

Inspections and Maintenance

Over Speed Governors are subject to regular inspections and maintenance to ensure their proper functioning. Elevator maintenance technicians are responsible for checking and testing the governor's performance as part of routine maintenance and safety inspections.