Multiple pedestal ring for ringer crane

A multiple outer rings and crane assembly for increasing a crane's lifting capacity comprising:

• said multiple outer rings comprising a first outer ring and at least one second outer ring;
• said first outer ring and each said at least one second outer ring comprising a plurality of ring segments, a top rail and a plurality of support pedestals;
• said first outer ring and each said at least one second outer ring having different diameters;
• said first outer ring and each said at least one second outer ring being separate and noncontiguous;
• said plurality of ring segments being connected to form a ring diameter corresponding to a diameter of each different said top rail;
• said plurality of support pedestals positioned on a stable surface and supporting said plurality of ring segments;
• said ring segments being of uniform size and shape for said first outer ring and each said at least one second outer ring;
• means for transferring a vertical load across both said first outer ring and said at least one second outer ring;
• said crane comprising an upper works rotatably mounted on said multiple outer rings;
• i) said upper works comprising a load lifting means and a means of rotatable support;
• said means of rotatable support including an inner roller assembly and at least one outer roller assembly;
• and
• ii) said upper works comprising a means of rotation.

A method of increasing the strength and stability of a ring supported crane, comprising:

• providing multiple concentric non-contiguous outer support rings;
• assembling said multiple outer support rings from a plurality of uniform and standard sized and shaped ring segments;
• transferring a vertical load from boom and mast reactions and from counterweight loads across both said first outer ring and said at least one second outer ring;
• using uniform and standard sized and shaped said plurality of ring segments having straight longitudinal sides;
• each of said plurality of ring segments having a first end and a second end;
• and said ring segment first end and said ring segment second end each having a chamfered shape.