Generator rotor bearing preload method and apparatus
AssigneeHamilton Sundstrand Corporation
InventorsGlenn C. Lemmers, Jr., Andrew P. Grosskopf, Mark A. Osborn
Life of this patent
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Abstract
A generator has its length shortened by placing springs in a space in a casing that includes an output shaft, which is driven by an input shaft, and a yoke for separating the two shafts. The generator is assembled by placing a spring in a space in a casing having a first part. The space also has a yoke in it. A rotor bearing is placed in the space adjacent to and impinging upon the spring. A second part of the casing is attached to the first part of the casing so that the spring is pre-loaded therein. The generator also utilizes a guide for holding a spring. The generator also has a thrust plate for applying a force of the springs upon the rotor bearing.
Claims15
An assembly for an aircraft generator having a bearing therein comprising:
- a spring guide;
- a spring disposed around said spring guide;
- a liner aligning said spring guide;
- and
- a thrust plate contiguous to said spring and the bearing.
A liner for a generator having a plurality of springs therein comprising:
- a ring-shaped body having an inner diameter of 94.869 mm and an outer diameter of approximately 4.334 inches;
- and
- a cut-out disposed in said inner diameter therein, said cutout supporting a spring.
A thrust plate for communicating a load on a bearing in an aircraft generator, said thrust plate comprising:
- a flat ring-shaped body having an interior diameter and an exterior diameter defining a width such that a ratio of the width of said body to said outer diameter is approximately 0.161.
A guide for a helical spring for use in an aircraft generator, said guide comprising:
- a cylindrical body said cylindrical body having an outside diameter such that a ratio of the outside diameter of said body to an outside diameter of said spring is approximately 0.56.
Dependencies are inferred from the claim text.