Does the elevator speed limiter operate first electrically or mechanically?
The utility model can monitor and control the speed of the car at any time, and when the super speed situation occurs, that is, when the speed of the elevator is 115%, the signal can be sent out in time, and then mechanical action is generated to cut off the power supply circuit, so that the traction machine is braking. If the elevator is still unable to brake, the safety tongs at the bottom of the car will force the car to stop. The governor is the instruction sender, and the safety clamp is the executor. The combination of the two appeared the theory of "safe elevator".
The elevator speed limiter is one of the safety control components in the elevator safety protection system. When the elevator is in operation for whatever reason the car overspeed, or even the risk of falling, and all other safety devices do not work under the condition, speed limiter and a safety clamp linkage to stop action occurs, the elevator car.
Overspeed safety device of elevator safety clamp system is essential, when the elevator speed, running out of control or suspension fracture, overspeed safety gear will lift quickly stop the car on the rail, and remained stationary, so as to avoid casualties and equipment damage accident.
