The invention belongs to the field of elevator safety and application and particularly relates to a self-powered elevator warning device. A casing is fixed on a protection plate, a casing cavity is divided into an upper casing cavity and a lower casing cavity, a circuit board with a transmitting unit and a dowel sleeved by a sleeve are installed on the lateral wall of the upper casing cavity, a metal film with an arc is riveted on the sleeve, and the other sleeve is further riveted at the other end of the metal film. The metal film and a piezoelectric film bonded to the surface of the metal film form a piezoelectric vibrator, and the piezoelectric vibrator and the riveted pin sleeve form a transducer. A pin roll is sleeved by the other sleeve of the transducer, the pin roll is riveted in a pin hole of a slide block transverse plate, and a slide block is arranged in the lower casing cavity. A button is inserted on the slide block transverse plate, a disc spring sleeves a slide block pull rod, and the upper end and the lower end of the disc spring respectively press the slide block transverse plate and the bottom wall of the casing. A pull ring is installed on the end portion of the slide block pull rod, and the pull ring is arranged on the outside of the lower casing cavity. The self-powered elevator warning device has the advantage that the device does not require a cable or a battery, is good in power supply reliability and real-time performance, the piezoelectric vibrator only bears press stress which is even in distribution, so that the mechanical reliability is high, and the power generation capability is high.


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    Title :

    Self-powered elevator warning device


    Contributors:
    KAN JUNWU (author) / FU JIAWEI (author) / WANG BIN (author) / LI XIPING (author) / WANG SHUYUN (author) / ZENG PING (author)

    Publication date :

    2015-04-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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