Provided is a rotation drive apparatus for rotating an upper rotary body of a construction machine, the rotation drive apparatus eliminating, while achieving a fundamental goal of stopping a rotation when an emergency stop operation is performed, wasteful stopping by a parking brake. The apparatus includes: an emergency stop switch (20); a rotation control section (12, 19) which performs control to stop a rotating motor (11) when the emergency stop operation is applied to the emergency stop switch (20); and a timer (21) which activates the parking brake (15) when a set period of time has elapsed after the emergency stop operation is performed. Preferably, the rotation control section (12, 19) detects a failure of an inverter (12) and causes the parking brake (15) to perform a braking operation before the elapse of the set period of time when the failure is detected.


    Access

    Download


    Export, share and cite



    Title :

    ROTATION DRIVE DEVICE FOR CONSTRUCTION MACHINE


    Additional title:

    DREHANTRIEBSVORRICHTUNG FÜR EINE BAUMASCHINE
    DISPOSITIF D'ENTRAÎNEMENT EN ROTATION POUR ENGIN DE CHANTIER


    Contributors:

    Publication date :

    2018-12-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    E02F Baggern , DREDGING / B66C Krane , CRANES



    ROTATION DRIVE APPARATUS FOR CONSTRUCTION MACHINE

    YAMASHITA KOJI / DOI TAKAYUKI | European Patent Office | 2017

    Free access

    Rotation drive apparatus for construction machine

    YAMASHITA KOJI / DOI TAKAYUKI | European Patent Office | 2018

    Free access

    ROTATION DEVICE FOR CONSTRUCTION MACHINE

    MASUDA ISATO / IWANAMI TOMOHIKO | European Patent Office | 2017

    Free access

    Rotation device for construction machine

    AKITA HIDEKI / SAKURAI SHIGEYUKI / IGAWA YUUJI | European Patent Office | 2016

    Free access

    ROTATION DEVICE FOR CONSTRUCTION MACHINE

    European Patent Office | 2017

    Free access