This paper presents a new version of Wheelchair.q, a wheelchair with stair climbing ability. The wheelchair is able to climb single obstacles or staircases thanks to a hybrid wheel-leg locomotion unit with a triple-wheels cluster architecture. The new concept presented in this work represents an improvement respect to previous versions. Through a different arrangement of functional elements, the wheelchair performances in terms of stability and regularity during movement on stair have been increased. In particular, attention has been paid to ensure a regular and comfortable motion for the user during stair climbing operation. For this reason, a cam mechanism has been introduced and designed with the aim to compensate the oscillation generated on the wheelchair frame by the locomotion unit rotation. A design methodology for the cam profile is presented. Moreover, a parametric analysis on the cam profile and on the mechanism dimensions has been conducted with the aim to find a cam profile with suitable dimensions and performances in terms of pressure angle and radius of curvature.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Design of a self-leveling cam mechanism for a stair climbing wheelchair


    Beteiligte:
    Quaglia, Giuseppe (Autor:in) / Nisi, Matteo (Autor:in)

    Erscheinungsdatum :

    2017-01-01



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629




    STAIR-CLIMBING WHEELCHAIR

    ABUGHAIDA AMER | Europäisches Patentamt | 2015

    Freier Zugriff

    Stair-climbing wheelchair

    ABUGHAIDA AMER | Europäisches Patentamt | 2016

    Freier Zugriff

    Electric wheelchair stair-climbing system

    DONG LINGJIAO | Europäisches Patentamt | 2021

    Freier Zugriff

    Evolution of Wheelchair.q, a Stair-climbing Wheelchair

    QUAGLIA, Giuseppe / FRANCO, WALTER / NISI, MATTEO | BASE | 2015

    Freier Zugriff