How does elevator brake work

The brakes are passive in the sense that it takes no energy, computer, or external agent to turn them on. They still work if the power goes out or if no one is paying attention.

This is possible because the brakes are simple mechanical devices. It is the initial falling motion of the elevator itself that engages the brakes.

His safety elevator has been in use ever since. The shock absorber works like a giant cushion to soften the elevator car's landing. In addition to these elaborate emergency systems, elevators need a lot of machinery just to make their stops.

In the next section, we'll find out how an elevator operates under normal conditions. Sign up for our Newsletter! Mobile Newsletter banner close. When the elevator is at rest, no current passes through the coil of the traction motor and the electromagnetic elevator brake.

At this time, because there is no attraction between the electromagnetic iron core, the brake pad tightens the brake wheel under the action of brake spring pressure to ensure the motor does not rotate; The moment when the traction motor is electrically rotating, the coil in the brake electromagnet is connected with current at the same time, and the electromagnetic core is magnetized and absorbed rapidly, driving the brake arm to force its brake spring, the brake tile is opened and completely separated from the brake wheel, so that the elevator could be running; When the elevator car stop the required floor, the traction motor loses power, and the coil in the brake electromagnet also lost power , and the magnetic force in the electromagnetic core disappears rapidly.

Although commercial and residential elevators might not appear as magical today as they did in the 19 th century, they might be just as mysterious. One of the most important components that helps an elevator do its job is the counterweight. This makes it easier for the motor to lift and lower the car since less force is needed to move the car up or down. The counterweight also makes elevators safer since it reduces the amount of braking the elevator needs to use.