The invention discloses a mistaken-opening and falling preventing alarming device for an elevator. The mistaken-opening and falling preventing alarming device for the elevator comprises a falling preventing railing unit and a signal acquiring and alarming unit; the falling preventing railing unit comprises an elevator car travel switch, a control electromagnet and a falling preventing railing; the signal acquiring and alarming unit comprises a microprocessor, a limit switch, an encoder, a decoder, an alarm, a direct-current voltage stabilized power supply and an alarm reset switch; the elevator car travel switch is used for detecting whether an elevator car levels; the control electromagnet controls the working state of the falling preventing railing; the falling preventing railing is connected with the limit switch; the limit switch is connected with the microprocessor through the encoder; the microprocessor is connected with the alarm through the decoder; the alarm reset switch is connected with the microprocessor; the direct current voltage stabilized power supply supplies working power to the signal acquiring and alarming unit. The device has the advantages of being simple in structure, low in manufacturing cost, high in real-time performance, and high in safety.
Mistaken-opening and falling preventing alarming device for elevator
2015-04-08
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |
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