Method and apparatus for servicing a gear assembly

Details Method and apparatus for servicing a gear assembly Method and apparatus for servicing a gear assembly

1992-11-23

1994-09-20

Echols, P. W.

Machine element or mechanism

Gearing

Rotary bodies

74448, 29893, 2940208, 29239, F16H 5512, D02J 314, B23P 1904

Patent

active

053478800

ABSTRACT:
An aspect of the invention is an improved method for servicing a gear assembly having a gear segment and a spider for supporting the segment. The method includes the steps of providing a jack assembly with a jacking bolt mounted for radial outward movement, moving the jacking bolt radially outward, applying a separating force to the segment and disengaging the segment from the spider. Further steps involve providing a drawtight assembly with a coupler attached to the segment, applying a force to the coupler, moving the coupler radially inward and engaging the segment with the spider. Other aspects of the invention include the "jacking" apparatus for separating a segment from the spider (for service purposes) and the "drawtight" apparatus for re-attaching the segment to the spider. The invention is particularly useful in connection with large machinery, e.g., a walking dragline, involving heavy and/or unevenly-wearing gear parts and difficult field service conditions.

REFERENCES:
patent: 914071 (1908-11-01), Porter
patent: 1506642 (1924-08-01), Iler
patent: 3888357 (1975-06-01), Bauer et al.
patent: 4111064 (1978-09-01), Purcell

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