Earthquake disaster prevention system for elevator

Abstract

The invention provides an earthquake disaster prevention system for an elevator, capable of early detecting earthquake sport with true danger to the building and the elevator. The earthquake disaster prevention system of the elevator sends out earthquake rapid signal when receiving earthquake information, controls operation of the elevator cage, and comprises:an earthquake instrument (2) which is fixed in the building with an (1) and measuring at least one of acceleration, displacement or seismic degree as oscillation; a receiving terminal (4), for receiving earthquake focus in an emergency earthquake rapid report, calculating the distance between the building and the earthquake focus, and the compare reference value is set based on that the farther the distance to the earthquake focus is, the smaller of the compare reference value is. The earthquake disaster prevention system controls the operation of the elevator (1) by comparing the detected oscillation with the compare reference value.

Description

technical field [0001] The present invention relates to an earthquake disaster prevention system for preventing disasters caused by long-period seismic motions (ground waves with a period ranging from several seconds to tens of seconds) such as earthquakes occurring at the junction of seismic plates, that is, trench-type earthquakes, and particularly Suitable for safely stopping elevators when long-period earthquakes occur. Background technique [0002] Compared with inland earthquakes that occur on inland active faults, when an earthquake occurs at the junction of seismic plates, its long-period seismic motion will spread from the source to a long-distance area. In recent years, corresponding measures have been required so that When a huge earthquake occurs at the junction of seismic plates, avoid damage to super high-rise buildings, long-distance bridges, and oil tanks as much as possible. [0003] Especially in terms of elevators, for example, a technical solution is dis...

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Problems solved by technology

[0010] Therefore, if only the maximum acceleration caused by seismic waves is predicted as in the above-mentioned prior art, or the seismic motion intensity is predicted in a distance attenuation manner only according to the source position and magnitude of the earthquake, or the long-term acceleration is only measured by the vibration sensor Periodic earthquake movement, it is difficult to clearly distinguish whether the earthquakes occurred are usually inland earthquakes or earthquakes occurring at the junction of seismic plates

That is, when an earthquake occurs in an area close to the location of the building, since all the periodic components are large, even a general-scale earthquake with a small risk is easily judged as a long-period seismic movement, while for the occurrence Long-period seismicity in remote areas cannot be judged as long-period seismicity due to the small shaking in the initial stage. It cannot be judged as long-period seismicity until the vibration is greatly enhanced and reaches a dangerous state. , thus, the time to make a risk judgment is delayed

[0011] In addition, in order to safely stop the elevator when an earthquake occurs, the elevator is generally equipped with an earthquake sensor. However, if the setting value is lowered to detect long-term earthquake motion, the elevator will be dangerous. Small earthquakes and man-made vibrations frequently cause malfunctions, resulting in reduced service efficiency of elevators, so this method is not practical

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