Live roller circle for power shovels and the like

Details Live roller circle for power shovels and the like Live roller circle for power shovels and the like

1979-01-24

1980-12-16

Footland, Lenard A.

Cutlery

308223, F16C 1930

Patent

active

042393051

ABSTRACT:
In a large, heavy-duty machine such as a power shovel and the like, having a lower frame, an upper frame and a live roller circle including a lower rail mounted on the lower frame, a roller cage structure, a plurality of pins mounted on the cage structure, rollers mounted on the pins of the cage structure and supported in rolling contact with the roller rail and an upper rail mounted on the upper frame and supported on the rollers, wherein the center of gravity of the machine travels beyond the live roller circle during normal operating conditions, the improvement comprising a set of at least two cylindrical rollers mounted on each pin of the cage structure of the roller circle.

REFERENCES:
patent: 755516 (1904-03-01), Miller et al.
patent: 1169150 (1916-01-01), Heim
patent: 3146040 (1964-08-01), Gist
patent: 3409338 (1968-11-01), Root et al.
patent: 4085854 (1978-04-01), Baron

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