An overhead power structure 1 for a vehicle 100 comprises a trolley 10, a plurality of generally tubular and parallel segments 2,3 forming a track along which the trolley runs, a power source connected to the tubular segments, and a cable 110 mechanically and electrically connecting the trolley to the vehicle 100. A sensor creates a first signal indicative of a measured characteristic of the cable 110, and a controller receives the first signal and generates a first response. The sensor may measure either an angle or tension of the cable and output the first signal if a predetermined threshold is exceeded. The outer tubular segments 3 may be rail segments along which guide wheels of the trolley run. The inner tubular segments 2 may be conductor tubes that form conductors for a power grid 20, which may be a three phase AC grid. The trolley may include a base that runs below and parallel to the power structure. A switch or a turntable may be provided to change the direction of a portion of the track. The turntable may include a plurality of track portions and be turned to change the track direction according to a selected portion (figures 6-9).


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    Title :

    Overhead power grid for mobile mining machines


    Contributors:

    Publication date :

    2016-05-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / E21F Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels , SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS



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