A method and related device for reducing resonant vibrations and dynamic loads of cranes, where vertical motion of a pay load is controlled by a boom winch and a hoist winch. In an embodiment, the method includes determining resonance frequencies of the crane boom and pay load from inertia data of the boom and stiffness on at least the boom and hoist ropes, the resonance frequencies including a first frequency and a lower second frequency. In addition, the method includes automatically modifying the motion of the boom winch or the hoist winch to induce a damping inducing winch motion in the boom or hoist winch, by tuning a proportional integral (PI)-type boom winch speed controller or a PI-type hoist winch speed controller. The boom winch speed controller is tuned to absorb energy at the second frequency, the hoist winch speed controller is tuned to absorb energy at the first frequency.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    METHOD FOR REDUCING DYNAMIC LOADS OF CRANES


    Beteiligte:

    Erscheinungsdatum :

    07.07.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B66C Krane , CRANES



    Method for reducing dynamic loads of cranes

    KYLLINGSTAD AGE | Europäisches Patentamt | 2018

    Freier Zugriff

    METHOD FOR REDUCING DYNAMIC LOADS OF CRANES

    KYLLINGSTAD ÅGE | Europäisches Patentamt | 2016

    Freier Zugriff

    RATED LOADS FOR MOBILE CRANES

    DAVIDSON, TREVOR | SAE Technical Papers | 1959


    Rated loads for mobile cranes

    Davidson, T. | Engineering Index Backfile | 1960


    Rated loads for mobile cranes

    Davidson, T. | Engineering Index Backfile | 1959