Epicyclic gear system with flexpins
US8430788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2009 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Jan 17, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2361/61
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flexpin assembly (B) for an epicyclic gear system (A) includes a flexpin (20) that at one end is cantilevered from a carrier end wall (12) and a sleeve (22) that surrounds the flexpin and is cantilevered from the flexpin at the other end of the flexpin. In addition, the assembly has an antifriction bearing (24) for supporting a planet pinion (6) around the sleeve. The flexpin has a base (30) that is configured to be anchored to a carrier wall, a head (32) to which the sleeve is attached, and a shank (34) located between the base and head. The sleeve has a mounting segment (78) that is connected to the head of the flexpin without a weld. Both may have tapered surfaces secured in contact by a plate (66) clamped against the mounting portion with screws (68) that thread into the head, thus enabling the sleeve to be detached from the pin. The head may have a cylindrical surface (72) over which the mounting segment of the sleeve fits with an interference fit exists. The bearing may have rolling elements (106, 108) that surround raceways (86, 88) on the sleeve and a rib ring (94) that confines the rolling elements axially, but can be detached. The flexpin assembly is easily disassembled…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.