| 摘要 |
A device for chocking and retaining a dovetail root (30) of a blade of a gas turbine engine (10) in a corresponding axially-extending slot (34) in a rim of a disc (32) includes a retention body (36) having a key portion (38) receivable in a keyway (40) formed in the base of the slot, and a mating portion (44) for mating with a complementary mating portion (46) of the root to prevent relative axial movement between the retention body and the root. The retention body has a lowered position in which the key portion is received sufficiently deeply in the keyway to allow the root to be positioned in the slot without interference from the retention body and also has a raised position in which, after the root is positioned in the slot, a part of the key portion is still received in the keyway while the mating portion mates with the complementary mating portion of the root. A slider (50) is axially insertable in the slot and moves the retention body from its lowered position to its raised position. |
