A lifting rig for moving heavy objects on rooftops having a framework supported by a plurality of sets of wheel assemblies. The framework has a pair of longitudinal truss assemblies wherein each truss assembly sits on top of the sets of wheel assemblies. Each of the two truss assemblies has a mast member extending upwardly to a cross beam which thus connects both truss members. Each mast member extends telescopically from an anchor post which itself extends perpendicularly from a truss member forming part of the truss assembly. From the cross beam hangs at least one chain block for raising and lowering a load; the chain block is hooked onto a means for hooking straddling over the cross beam.


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    Title :

    Lifting rig for moving heavy objects on rooftops


    Contributors:

    Publication date :

    2021-05-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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