A frictional damper for an elevator system includes one or more friction pads configured to move between a first position, and a second position defined by engagement of the one or more friction pads to the guide rail. An actuation unit urges the one or more friction pads into and out of engagement with the guide rail. The actuation unit includes a hydraulic actuator operably connected to the one or more friction pads to urge movement of the one or more friction pads into and out of engagement with the guide rail via hydraulic fluid pressure. The hydraulic actuator includes a hydraulic cylinder containing a volume of hydraulic fluid and a hydraulic piston located in the hydraulic cylinder and operably connected to the one or more friction pads. An electromagnetic actuator selectably urges hydraulic fluid to apply a force to the hydraulic piston, urging the movement of the friction pads.


    Access

    Download


    Export, share and cite



    Title :

    Electrohydraulic damper for elevator system



    Publication date :

    2021-12-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



    ELECTROHYDRAULIC DAMPER FOR ELEVATOR SYSTEM

    WITCZAK TADUESZ PAWEL WITCZAK / JEDRYCZKA CEZARY / SZELAG WOLJCIECH et al. | European Patent Office | 2023

    Free access

    ELECTROHYDRAULIC DAMPER FOR ELEVATOR SYSTEM

    WITCZAK TADEUSZ PAWEL / JEDRYCZKA CEZARY / SZELAG WOJCIECH et al. | European Patent Office | 2020

    Free access

    DAMPER FOR ELEVATOR, AND ELEVATOR

    HANAWA YUTARO / FURUZAWA HISASHI | European Patent Office | 2019

    Free access

    Damper for elevator, and elevator

    HANAWA YUTARO / FURUZAWA HISASHI | European Patent Office | 2022

    Free access

    DAMPER FOR ELEVATOR, AND ELEVATOR

    HANAWA YUTARO / FURUZAWA HISASHI | European Patent Office | 2017

    Free access