The invention belongs to the technical field of elevator products and particularly discloses a system and method for preventing engineers from falling to an elevator shaft. The system comprises an elevator landing door, a landing door lock, an elevator car door, an elevator car door lock and an unlocking key for unlocking the landing door lock, and further comprises an MPU, a relay and a sound-light alarm device. The sound-light alarm device is connected with the relay, when a normally-closed contact of the relay is closed, a loop of the sound-light alarm device is switched on, and the sound-light alarm device is used for reminding the engineers about whether it is safe or not to enter the shaft. The system is simple in structure, low in manufacturing cost and capable of preventing the engineers from falling to the elevator shaft, and safety accidents during field operation can be reduced; the method has a high sound-light warning effect and is easy to implement, and the personal safety of the engineers is ensured.
System and method for preventing engineers from falling to elevator shaft
2015-05-20
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |
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