A preload and retraction device (10, 10′) of a wheel assembly comprises a linear guide (11), an internal slider (12) and an external slider (13) movable along the linear guide (11), a linear elastic member (14) arranged to connect the two sliders (12) (13), a first wheel support arm (15) integral with the internal slider (12) and a second wheel support arm (19) integral with the external slider (13), with the external slider (13) carrying a weight support wheel (20) that is actuated and the internal slider (12) carrying a traction wheel (16) that comes into contact with a rolling surface with a preload force that is a function of the geometry of the system. The use of the device (10, 10′) is particularly advantageous for supporting the wheels in a self-propelled cart (100) of the type suitable for moving along a railway track for the inspection of the underbody of railway vehicles as it greatly facilitates and at least partially automates the installation of the self-propelled cart (100) on the track.


    Access

    Download


    Export, share and cite



    Title :

    Preload and Retraction Device of a Wheel Assembly and Self-Propelled Cart Comprising Said Device



    Publication date :

    2025-03-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES



    PRELOAD AND RETRACTION DEVICE OF A WHEEL ASSEMBLY AND SELF-PROPELLED CART COMPRISING SAID DEVICE

    FRISOLI ANTONIO / TISENI LUCA / SOLAZZI MASSIMILIANO et al. | European Patent Office | 2024

    Free access

    PRELOAD AND RETRACTION DEVICE OF A WHEEL ASSEMBLY AND SELF-PROPELLED CART COMPRISING SAID DEVICE

    FRISOLI ANTONIO / TISENI LUCA / SOLAZZI MASSIMILIANO et al. | European Patent Office | 2023

    Free access

    Wheel retraction assembly, cart and related components

    FURTADO ANTHONY G | European Patent Office | 2017

    Free access

    Device for preloading and retracting wheel assembly and cart comprising said device

    FRISOLI ANTONIO / TISENE LUCA / SOLAZZI MASSIMILIANO et al. | European Patent Office | 2023

    Free access

    Self-propelled cart

    YE MEI | European Patent Office | 2015

    Free access