The Last Insurance to End Deadly Elevators

When the elevator is in operation, no matter what causes the car to overspeed or even fall, and all safety protection devices fail to work, can the spring or hydraulic buffer of the existing emergency rescue device act as the ultimate safety insurance?

According to the current national standard, the buffer mainly plays a protective role when the elevator is located at the lowest floor station and the speed is not up to the trigger speed of the elevator safety gear.

This kind of standard limitation is really difficult to understand. The safety protection is only effective when low overspeed occurs at the lowest floor station. Who can decide that the elevator safety device will only fail at the lower floor station? If an out-of-control overspeed occurs in a high-rise building, can the buffer still effectively protect it?

A buffer with a speed limit, once the elevator is out of control during operation, it will definitely not be able to effectively protect the safety of passengers. The so-called buffer is the ultimate insurance of the elevator safety device, which seems a bit exaggerated and ironic. The official line is that elevators set safety standards and do not consider compound failures of safety devices. The key point is that safety equipment needs to be maintained by "people", and there will be the possibility of human error. The so-called safety device does not guarantee certain safety. The news of overspeeding and falling casualties of elevators across the country continues, indicating that the existing speed limit function of the buffer has no real safety guarantee.

In fact, the country does not ignore the failure of elevator safety devices, but once the elevator fails and overspeeds on an unspecified floor, for example, the electronic parts of the speed limiter fail, and the safety gear does not work.<The speed limiter is the command sender, and the safety gear is the executor. Once the speed limiter fails, the safety gear will definitely not work>,

When the elevator loses control, speeds or falls, this kind of disaster will only be encountered in a lifetime of bad luck. The people who encounter it can only ask for luck? Because there is no "super buffer" in the world that can resist the impact of different falling speeds on different floors at the same time.

The government will not ignore the safety of people's lives and property just because the elevator is out of control due to overspeeding or the probability of direct fall is low. It is just that the existing buffer technology cannot solve the impact of different speeds at the same time. It is impossible for the country to formulate non-existent technical standards to regulate the industry. implement.

The good news is that a reverse impact device that can reverse the impact force into thrust has been successfully developed. Experiments have proved that no matter whether the elevator is low or high speed, as long as the speed does not exceed 15 meters per second, the reverse impact device can reverse the speed of the elevator car. The moment it hit the ground, it reversed and lifted up, and stopped safely.

This elevator safety reverse impact device can resolve 80% of the impact force to the greatest extent, but 20% of the impact damage is still unavoidable. Because the out-of-control elevator collides with the reverse impact device during the high-speed fall, it is reversed and lifted up, and the feet of the passengers in the elevator bear Pushing from bottom to top (body weight + speed X 2), although fatal injuries can be avoided, discomfort or lower limb injuries are still possible. It must be understood that in the event of a disaster at an unspecified height and speed, the reverse impact device is an emergency rescue tool, which only focuses on life-saving, not comfort.

Using the elevator safety reverse impact device, the life safety of the construction site elevator and building elevator passengers will be protected to the maximum extent.